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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Sep. 21, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Kornit Digital Ltd.
Entity Central Index Key	0001625791
Trading Symbol	KRNT
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	6-K
Document Period End Date	Jun. 30, 2018
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2018
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		0

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 17,223	$ 18,629
Short-term bank deposits	7,500	4,500
Marketable securities	10,657	5,537
Trade receivables, net	33,162	23,245
Inventories	25,123	34,855
Other accounts receivable	3,153	2,661
Total current assets	96,818	89,427
LONG-TERM ASSETS:
Marketable securities	67,341	68,835
Deposits and other long-term assets	722	627
Severance pay fund	537	523
Deferred tax asset	805	564
Property and equipment, net	10,994	11,230
Intangible assets, net	1,543	2,076
Goodwill	5,092	5,092
Total long-term assets	87,034	88,947
Total assets	183,852	178,374
CURRENT LIABILITIES:
Trade payables	10,014	12,439
Employees and payroll accruals	7,081	6,338
Deferred revenues and advances from customers	2,096	1,697
Other payables and accrued expenses	4,740	5,046
Total current liabilities	23,931	25,520
LONG TERM LIABILITIES:
Accrued severance pay	1,355	1,232
Payment obligation related to acquisition		334
Deferred revenues and advances from customers	436	423
Other long-term liabilities	328	166
Total long-term liabilities	2,119	2,155
SHAREHOLDERS' EQUITY:
Ordinary shares of NIS 0.01 par value - Authorized: 200,000,000 shares as of December 31, 2017 and June 30, 2018; Issued and Outstanding: 34,124,223 shares and 34,385,330 shares as of December 31, 2017 and June 30, 2018, respectively	86	86
Additional paid in capital	145,170	140,170
Receipt on account of shares	(20)
Accumulated other comprehensive income	85	301
Retained earnings	12,481	10,142
Total shareholders' equity	157,802	150,699
Total liabilities and shareholders' equity	$ 183,852	$ 178,374

Consolidated Balance Sheets (Parenthetical) (Unaudited) - ₪ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Ordinary shares, par value	₪ 0.01	₪ 0.01
Ordinary shares, shares authorized	200,000,000	200,000,000
Ordinary shares, shares issued	34,385,330	34,124,223
Ordinary shares, shares outstanding	34,385,330	34,124,223

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Revenues
Products	$ 58,850	$ 50,406
Services	8,146	5,285
Total revenues	66,996	55,691
Cost of revenues
Products	25,232	24,075
Services	8,947	6,556
Total cost of revenues	34,179	30,631
Gross profit	32,817	25,060
Operating expenses:
Research and development	10,589	9,342
Selling and marketing	12,201	10,829
General and administrative	8,054	6,138
Restructuring expenses	266	93
Total operating expenses	31,110	26,402
Operating income (loss)	1,707	(1,342)
Finance income, net	828	93
Income (loss) before taxes on income	2,535	(1,249)
Taxes on income	196	273
Net income (loss)	$ 2,339	$ (1,522)
Basic and diluted net income (loss) per share	$ 0.07	$ (0.05)

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,339	$ (1,522)
Change in unrealized gains (losses) on marketable securities:
Unrealized gains (loss) arising during the period	(113)	69
Gains reclassified into net loss		(29)
Net change	(113)	40
Change in unrealized gains (losses) on cash flow hedges:
Unrealized gains (loss) arising during the period	(121)	390
Gains (loss) reclassified into net income (loss)	24	(369)
Net change	(97)	21
Foreign currency translation adjustment	(6)	127
Total other comprehensive income (loss)	(216)	188
Comprehensive income (loss)	$ 2,123	$ (1,334)

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows used in operating activities:
Net income (loss)	$ 2,339	$ (1,522)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	2,367	2,427
Warrants to customers	1,533	2,353
Share-based compensation	2,380	1,948
Amortization of premium on marketable securities	241	277
Realized gain on sale of marketable securities		(29)
Increase in accrued severance pay, net	109	28
Decrease (increase) in trade receivables	(10,141)	2,894
Decrease (increase) in other receivables and prepaid expenses	(522)	747
Decrease (increase) in inventories	9,044	(8,652)
Change in deferred taxes, net	(219)	(183)
Decrease (increase) in other assets	(97)	194
Decrease in trade payables	(2,192)	(2,060)
Increase (decrease) in employees and payroll accruals	759	(833)
Increase (decrease) in deferred revenues and advances from customers	412	(692)
Increase in other payables and accrued expenses	203	122
Increase in other long-term liabilities	175	369
Loss from sale of property and equipment		29
Foreign currency translation loss (gain) on inter company balances with foreign subsidiaries	293	(595)
Net cash provided by (used in) operating activities	6,684	(3,178)
Cash flows used in investing activities:
Purchase of property and equipment	(1,244)	(3,431)
Investments in bank deposits, net	(3,000)
Proceeds from maturity of marketable securities	2,150	6,740
Proceeds from sale of marketable securities		38,312
Purchase of marketable securities	(6,130)	(70,648)
Net cash used in investing activities	(8,224)	(29,027)
Cash flows provided by financing activities:
Proceeds from issuance of ordinary shares in a follow-on offering, net		35,077
Exercise of employee stock options	1,067	1,347
Payment of contingent consideration	(900)	(1,400)
Net cash provided by financing activities	167	35,024
Foreign currency translation adjustments on cash and cash equivalents	(33)	99
Increase (decrease) in cash and cash equivalents	(1,373)	2,819
Cash and cash equivalents at the beginning of the period	18,629	22,789
Cash and cash equivalents at the end of the period	17,223	25,707
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment acquired in credit	200	863
Inventory transferred to be used as property and equipment	591	167
Receipts on account of shares	$ 20	$ 167

General

6 Months Ended

Jun. 30, 2018

General [Abstract]

GENERAL

NOTE 1:- GENERAL

Kornit Digital Ltd. (the “Company”) was incorporated in 2002 under the laws of the State of Israel. The Company and its subsidiaries develop, design and market digital printing solutions for the global printed textile industry. The Company’s and its subsidiaries’ solutions are based on their proprietary digital textile printing systems, ink and other consumables, associated software and value-added services.

The Company has established wholly-owned subsidiaries in Israel, the United States, Germany, Hong Kong and the United Kingdom. The Company’s subsidiaries are engaged primarily in sales, and marketing, except for the Israeli subsidiary which is engaged primarily in research and development and manufacturing.

On January 31, 2017, the Company closed a follow on and secondary offering where by 8,625,000 ordinary shares were sold in the transaction to the public. The aggregate net proceeds received by the Company from the offering were $35,077, net of underwriting discounts, commissions and offering expenses.

On May 15, 2017, the Company made an underwritten secondary offering of 4,250,000 ordinary shares by the Company’s largest shareholder. The Company did not receive any of the proceeds from the sale of the ordinary shares.

The Company depends on five major suppliers to supply certain components for the production of its products. If one of these suppliers fails to deliver or delays the delivery of the necessary components, the Company will be required to seek alternative sources of supply. A change in these suppliers could result in manufacturing delays, which could cause a possible loss of sales and, consequently, could adversely affect the Company’s results of operations and financial position.

Significant Accounting Policies

6 Months Ended

Jun. 30, 2018

Significant Accounting Policies [Abstract]

SIGNIFICANT ACCOUNTING POLICIES

NOTE 2:- SIGNIFICANT ACCOUNTING POLICIES

Unaudited interim consolidated financial statements:

The accompanying unaudited interim consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. In the opinion of management, the unaudited interim consolidated financial statements include all adjustments of a normal recurring nature necessary for a fair presentation of the Company’s consolidated financial statements.

The balance sheet at December 31, 2017 has been derived from the audited consolidated financial statements of the Company at that date but does not include all information and footnotes required by U.S. GAAP for complete financial statements.

The accompanying unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes for the year ended December 31, 2017, included in the Company’s Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission (“SEC”) on March 20, 2018. The significant accounting policies applied in the Company’s audited 2017 consolidated financial statements and notes thereto included in the Annual Report are applied consistently in these unaudited interim consolidated financial statements, except for changes associated with the new revenue recognition standard for the six months ended June 30, 2018, as detailed in Note 2 (e). Results for the six months ended June 30, 2018 are not necessarily indicative of results that may be expected for the year ending December 31, 2018.

Use of estimates:

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. The Company’s management believes that the estimates, judgments and assumptions used are reasonable based upon information available at the time they are made. Actual results could differ from those estimates.

Impact of recently issued accounting standards:

In February 2016, the FASB issued Accounting Standards Update No. 2016-02 (Topic 842) “Leases.” Topic 842 supersedes the lease requirements in Accounting Standards Codification (ASC) Topic 840, “Leases.” Under Topic 842, lessees are required to recognize assets and liabilities on the balance sheet for most leases and provide enhanced disclosures. Leases will continue to be classified as either finance or operating. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018 and must be adopted using a modified retrospective approach, which (following the amendment in July 2018) requires lessees and lessors to recognize and measure all leases within the scope of this ASU using one of the following transition methods: (i) as of the beginning of the earliest comparative period presented in the financial statements, or (ii) as of the beginning of the period in which this ASU is adopted. There are additional optional practical expedients that an entity may elect to apply. The Company is in the process of implementing changes to its systems and processes in conjunction with the review of lease agreements. The Company will adopt Topic 842 effective January 1, 2019 and expect to elect certain available transitional practical expedients. The Company is evaluating the potential impact of this pronouncement.

In June 2016, the FASB issued Accounting Standards Update No. 2016-13 (ASU 2016-13) “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost. ASU 2016-13 replaces the existing incurred loss impairment model with an expected loss methodology, which will result in more timely recognition of credit losses. ASU 2016-13 is effective for annual reporting periods, and interim periods within those years, beginning after December 15, 2019. The Company is evaluating the potential impact of this pronouncement.

In January 2017, the FASB issued Accounting Standards Update No. 2017-04 (ASU 2017-04) “Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates step two of the goodwill impairment test and specifies that goodwill impairment should be measured by comparing the fair value of a reporting unit with its carrying amount. Additionally, the amount of goodwill allocated to each reporting unit with a zero or negative carrying amount of net assets should be disclosed. ASU 2017-04 is effective for annual or interim goodwill impairment tests performed in fiscal years beginning after December 15, 2019; early adoption is permitted. The Company does not expect that this new guidance will have a material impact on the Company’s Consolidated Financial Statements.

In August 2017, the FASB issued ASU No. 2017-12 (Topic 815) Derivatives and Hedging — Targeted Improvements to Accounting for Hedging Activities, which expands an entity’s ability to hedge financial and nonfinancial risk components and amends how companies assess effectiveness as well as changes the presentation and disclosure requirements. The new standard is to be applied on a modified retrospective basis and is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. The Company is currently evaluating the impact of adoption on the Consolidated Financial Statements.

In June 2018, the FASB issued ASU No. 2018-07, “Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting.” These amendments expand the scope of Topic 718, Compensation - Stock Compensation (which currently only includes share-based payments to employees) to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. This ASU supersedes Subtopic 505-50, Equity - Equity-Based Payments to Non-Employees. The guidance is effective for the interim and annual periods beginning after December 15, 2018, and early adoption is permitted. The Company is currently evaluating the potential effect on its consolidated financial statements.

Recently adopted accounting standard:

In May 2014, the Financial Accounting Standards Board (“FASB”) issued new guidance related to revenue recognition: “Revenue from Contracts with Customers” (“ASC 606”), which outlines a comprehensive revenue recognition model and supersedes most current revenue recognition guidance. The Company adopted ASC 606 on January 1, 2018, using the modified retrospective transition method applied to those contracts which were not completed as of January 1, 2018. The new standard application had no material effect on the pattern of revenue recognition, nevertheless, the revenue recognition disclosure has been adjusted in accordance to ASC 606 guidance. See Revenue Recognition below for further details.

Revenue Recognition:

The Company generates revenues from sales of systems, consumables and services. The Company generates revenues from sale of its products directly to end-users and indirectly through independent distributors, all of whom are considered end-users.

The Company recognizes revenues in accordance with ASC No. 606, “Revenue from Contracts with Customers”. As such, the Company identifies a contract with a customer, identifies the performance obligations in the contract, determines the transaction price, allocates the transaction price to each performance obligation in the contract and recognizes revenues when, or as, the Company satisfies a performance obligation.

Revenues from products, which consist of systems and consumables, are recognized at the point of time when control has passed, in accordance with the agreed-upon delivery terms. Revenues from services are derived mainly from the sale of print heads, spare parts, upgrade kits and sale of service contracts. The Company’s print heads, spare parts and upgrade kits revenues (collectively “Spare parts”) are recognized at the point of time when control has passed, in accordance with the agreed-upon delivery terms. The service contracts are recognized over time, on a straight-line basis, over the period of the service.

For multiple performance obligations arrangements, such as selling a system with consumables, installation and training, the Company accounts for each performance obligation separately as it is distinct. The transaction price is allocated to each distinct performance obligation on a relative standalone selling price (“SSP”) basis and revenue is recognized for each performance obligation when control has passed. In most cases, the Company is able to establish SSP based on the observable prices of services sold separately in comparable circumstances to similar customers and for products based on the Company’s best estimates of the price at which the Company would have sold the product regularly on a stand-alone basis. The Company reassesses the SSP on a periodic basis or when facts and circumstances change.

The Company periodically provides customer incentive programs including product discounts, volume-based rebates and warrants, which are accounted for as reductions to revenue in the period in which the revenue is recognized. These reductions to revenue are made based upon reasonable and reliable estimates that are determined according to historical experience and the specific terms and conditions of the incentive.

Revenue disaggregated by revenue source for the six months ended June 30, 2018 and 2017, consists of the following:

	Six months ended June 30,
	2018		2017

Systems	$	33,150	$	28,766
Ink and consumables		25,700		21,640
Spare parts		6,621		4,168
Service contracts		1,525		1,117

Total revenue	$	66,996	$	55,691

The following table presents revenue disaggregated by geography based on customer location:

	Six months ended June 30,
	2018		2017

U.S	$	36,137	$	28,422
EMEA		22,165		15,763
Asia Pacific		6,938		8,560
Other		1,756		2,946

Total revenue	$	66,996	$	55,691

Contract liabilities include amounts received from customers for which revenue has not yet been recognized. Contract liabilities are presented under deferred revenues and advances from customers. During the six months ended June 30, 2018, the Company recognized $672 that was included in the deferred revenues balance at January 1, 2018.

The following table represents the outstanding performance obligations as of June 30, 2018, included in deferred revenues which are expected to be satisfied and recognized in future periods:

	Remainder of 2018		2019		2020 and thereafter
Product	$	528	$	-	$	-
Services		2,537		2,016		627

Total	$	3,065	$	2,016	$	627

Marketable Securities

6 Months Ended

Jun. 30, 2018

Marketable Securities [Abstract]

MARKETABLE SECURITIES

NOTE 3:- MARKETABLE SECURITIES

The following tables summarize our marketable securities by significant investing categories:

	June 30, 2018
	Amortized cost		Gross unrealized gain		Gross unrealized loss			Fair value

Matures within one year:
Corporate debentures	$	10,191	$	160	$	-		$	10,351
Government debentures		284		22		-			306
		10,475		182		-			10,657

Matures after one year through three years:
Corporate debentures		54,855		-		(288	)		54,567
Government debentures		12,811		-		(37	)		12,774
		67,666		-		(325	)		67,341

Total	$	78,141	$	182	$	(325	)	$	77,998

	December 31, 2017
	Amortized cost		Gross unrealized gain		Gross unrealized loss			Fair value

Matures within one year:
Corporate debentures	$	5,190	$	41	$	-		$	5,231
Government debentures		295		11		-			306
		5,485		52		-			5,537

Matures after one year through three years:
Corporate debentures		56,514		-		(65	)		56,449
Government debentures		12,403		-		(17	)		12,386
		68,917		-		(82	)		68,835

Total	$	74,402	$	52	$	(82	)	$	74,372

All investments with an unrealized loss as of June 30, 2018 and 2017 are with continuous unrealized losses for less than 12 months.

Fair Value Measurements

6 Months Ended

Jun. 30, 2018

Fair Value Measurements [Abstract]

FAIR VALUE MEASUREMENTS

NOTE 4:- FAIR VALUE MEASUREMENTS

FASB Accounting Standards Codification (“ASC”) No. 820, “Fair Value Measurements and Disclosures” defines fair value and establishes a framework for measuring fair value. According to ASC No. 820, fair value is an exit price, representing the amount that would be received for selling an asset or paid for the transfer of a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability. A three-tier fair value hierarchy is established as a basis for considering such assumptions and for inputs used in the valuation methodologies in measuring fair value:

	Level I:		Unadjusted quoted prices in active markets that are accessible on the measurement date for identical, unrestricted assets or liabilities;

	Level II:		Quoted prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; and

	Level III:		Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or no market activity).

The Company measures its marketable securities, foreign currency derivative contracts and the contingent payments obligation in connection with acquisition (the “Contingent Payments”) at fair value. Marketable securities and foreign currency derivative contracts are classified within Level II as the valuation inputs are based on quoted prices and market observable data of similar instruments. The Contingent Payments are classified within level III as the valuation inputs are based on significant inputs not observable in the market.

The below table sets forth the Company’s assets and liabilities that were measured at fair value as of June 30, 2018 and December 31, 2017 by level within the fair value hierarchy.

Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

	As of June 30, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Marketable securities		-	$	77,998		-	$	77,998
Total financial assets		-	$	77,998		-	$	77,998

Liabilities:
Payment obligation related to acquisition		-		-	$	356	$	356
Foreign currency derivative contracts		-		52				52
Total liabilities		-	$	52	$	356	$	408

	As of December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Marketable securities		-	$	74,372		-	$	74,372
Foreign currency derivative contracts		-		45		-		45
Total financial assets		-	$	74,417		-	$	74,417

Liabilities:
Payment obligation related to acquisition		-		-	$	334	$	334
Total liabilities		-		-	$	334	$	334

The following table set forth the change of fair value measurements that are categorized within Level 3:

Total fair value as of January 1, 2018	$	334
Accretion of payments obligation		22

Total fair value as of June 30, 2018	$	356

The fair value of the payment obligation related to acquisition was estimated based several factors of which the most significant is the Company’s revenue projections. The Company used a Monte Carlo Simulation of the triangular model with a discount rate of 15%. Payment obligation related to acquisition is revalued to current fair value at each reporting date. Any change in the fair value as a result of time passage is recognized in the financial expenses; any other changes in significant inputs such as the discount rate, the discount period or other factors used in the calculation, is recognized in operating expenses in the consolidated results of operations in the period the estimated fair value changes. Payment obligation related to acquisition will continue to be accounted for and measured at fair value until the contingencies are settled during fiscal year 2018. Accretion of the payment obligation related to acquisition is included in financial expenses, net.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Inventories

6 Months Ended

Jun. 30, 2018

Inventories [Abstract]

INVENTORIES

NOTE 5:- INVENTORIES

	June 30,		December 31,
	2018		2017

Raw materials and components	$	15,115	$	15,756
Finished products		10,008		19,099

	$	25,123	$	34,855

Inventory write-offs amounted to $903 and $1,333 during the six months ended June 30, 2018 and 2017, respectively.

Derivatives and Hedging Activities	6 Months Ended
Derivatives and Hedging Activities	Jun. 30, 2018
Derivatives and Hedging Activities [Abstract]
DERIVATIVES AND HEDGING ACTIVITIES	NOTE 6:- DERIVATIVES AND HEDGING ACTIVITIES The Company follows FASB ASC No. 815,” Derivatives and Hedging” which requires companies to recognize all of their derivative instruments as either assets or liabilities in the statement of financial position at fair value. Accounting for changes in fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging transaction and further, on the type of hedging transaction. For those derivative instruments that are designated and qualify as hedging instruments, a company must designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge, or a hedge of a net investment in a foreign operation. Due to the Company’s global operations, it is exposed to foreign currency exchange rate fluctuations in the normal course of its business. The Company used derivative financial instruments, specifically foreign currency forward and option contracts (“Hedging Contracts”), to manage exposure to foreign currency risks, by hedging a portion of the Company’s forecasted expenses denominated in New Israeli Shekels expected to incur within a year. The effect of exchange rate changes on foreign currency hedging contracts is expected to partially offset the effect of exchange rate changes on the underlying hedged item For derivative instruments that are designated and qualify as a cash flow hedge (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income (loss) and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Gains or losses from contracts that were not designated as hedging instruments are recognized in “financial income (expenses), net”. As of June 30, 2018, and December 31, 2017, the notional principal amount of the Hedging Contracts to sell U.S. dollars held by the Company was $5,836 and $3,651, respectively. As of June 30, 2018, the fair value of the Company’s outstanding derivatives designated as cash flow hedging instruments was $52 which is included within “Other payables and accrued expenses” in the balance sheet. As of December 31, 2017, the fair value of the Company’s outstanding derivatives designated as cash flow hedging instruments was $45 which is included within” Other accounts receivable and prepaid expenses” in the balance sheet.

Commitments and Contingent Liabilities

6 Months Ended

Jun. 30, 2018

Commitments and Contingent Liabilities [Abstract]

COMMITMENTS AND CONTINGENT LIABILITIES

NOTE 7:- COMMITMENTS AND CONTINGENT LIABILITIES

Charges:

As of June 30, 2018, the Company has two lines of credit with Israeli banks for total borrowings of up to $3 million, which was undrawn to date. These lines of credit are unsecured and available provided that the Company maintains a 30% ratio of total tangible shareholders’ equity to total tangible assets and that the total credit use will be less than 70% of the Company and its subsidiaries’ receivables. Interest rates across these credit lines varied from 0.2% to Prime (Israel Interbank Offered Rate) +0.7% (currant 2.3%) as of June 30, 2018.

Purchase commitments:

As of June 30, 2018, the Company has purchase commitments from vendors in the amount of $22,652. These commitments are due primarily within one year.

Litigation:

From time to time, the Company is party to various legal proceedings, claims and litigation that arise in the normal course of business. It is the opinion of management that the ultimate outcome of these matters will not have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Royalty Commitments:

Under the Company’s agreement for purchasing print heads and other products, which was amended in 2016, the Company is obligated to pay 2.5% royalties of its annual ink revenues up to an annual maximum amount of $625.

Royalty expenses for the six months ended June 30, 2018 and 2017 were $312.

Guarantees:

As of June 30, 2018, the Company provided two bank guarantees in a total amount of $379 for its rented facilities.

Earnings Per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

EARNINGS PER SHARE

NOTE 8:- EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted net earnings per share:

	Six months ended June 30,
	2018		2017
Numerator for basic and diluted net earnings per share:

Net income (loss)	$	2,339	$	(1,522	)

Weighted average shares outstanding, net of treasury stock:

Denominator for basic net income (loss) per share		34,295,752		33,151,633

Effect of dilutive securities:
Employee share options		589,641		-
Denominator for diluted net income (loss) per share		34,885,393		33,151,633

Basic and diluted net income (loss) per share	$	0.07	$	(0.05	)

During the six months ended June 30, 2017, the Company was in a loss position and therefore all its securities were antidilutive.

Shareholders' Equity

6 Months Ended

Jun. 30, 2018

Shareholders' Equity [Abstract]

SHAREHOLDERS' EQUITY

NOTE 9:- SHAREHOLDERS’ EQUITY

Company’s shares:

On January 31, 2017 the Company closed a follow on and secondary offering where by 8,625,000 ordinary shares were sold in the transaction to the public of which 2,300,000 were issued by the Company and 6,325,000 were sold by the selling shareholders (inclusive of 1,125,000 ordinary shares pursuant to the full exercise of an overallotment option granted to the underwriters). The aggregate net proceeds received by the Company from the offering were $35,077, net of underwriting discounts, commissions and offering expenses.

Share option and RSU’s plans:

A summary of the Company’s share option activity and related information is as follows:

	Number of shares upon exercise			Weighted average exercise price		Weighted- average remaining contractual term (in years)		Aggregate intrinsic value (1)

Outstanding at beginning of year		2,360,647		$	10.76		8.05
Granted		3,333			13.40		9.64
Exercised		(261,670	)		5.69		8.79
Forfeited		(99,326	)		12.50		7.12

Outstanding at end of year		2,002,984		$	11.5		7.78	$	12,788

Exercisable at end of year		944,037		$	8.67		6.95	$	8,641

As of June 30, 2018, $7,124 in unrecognized compensation cost related to share options is expected to be recognized over a weighted average vesting period of 2.59 years.

The weighted average fair value of options granted during the six months ended June 30, 2018 and 2017 was $18.05 and $10.81 per share, respectively.

(1)

Calculation of aggregate intrinsic value for options outstanding and exercisable as of June 30, 2018 is based on the share price of the Company’s ordinary shares as of June 30, 2018 which was $17.8 per share.

A summary of the Company’s RSUs activity is as follows:

	Six months ended
	June 30, 2018

Outstanding at December 31, 2017		88,759
Granted		144,801
Vested		(825	)
Forfeited		(11,608	)
Outstanding as of June 30,2018		221,127

The weighted average fair values at grant date of RSUs granted for the six months ended June 30, 2018 and 2017 were $14.04 and $21.15, respectively.

The Company’s Board of Directors approved Equity Incentive Plans pursuant to which the Company is authorized to issue to employees, directors and officers of the Company and its subsidiaries (the “optionees”) options to purchase ordinary shares of NIS 0.01 par value each, at an exercise price equal to at least the fair market value of the ordinary shares at the date of grant. Under the plans, options granted before 2014 generally vest in portions as follows: 50% of total options are exercisable two years after the date determined for each optionee, a further 25% three years after the date determined for each optionee and a 25% four years after the date determined for each optionee. Starting 2014, 25% of total options are exercisable one year after the date determined for each optionee and a further 6.25% at the end of each subsequent three-month period for 3 years. Under the Equity Incentive Plans and starting 2017, the Company grants Restricted Stock Units (“RSUs”). The RSU’s generally vest over a period of four years of employment. Options and RSU that have vested are exercisable for up to 10 years from the grant date of the options or RSU to each employee. Options and RSUs that are cancelled or forfeited before expiration become available for future grants.

The following table sets forth the total share-based compensation expense included in the consolidated statements of operations for the six months ended June 30, 2018 and 2017:

	Six months ended June 30,
	2018		2017

Cost of products	$	189	$	204
Cost of services		152		83
Research and development		402		297
Selling and marketing		476		430
General and administrative		1,161		934

Total share-based compensation expense	$	2,380	$	1,948

On January 10, 2017, the Company signed a master purchase agreement with Amazon Inc. under which 2,932,176 warrants to purchase ordinary shares of the Company with an exercise price of $13.03 were issued to Amazon as a customer incentive. The warrants are subject to vesting as a function of payments for purchased products and services of up to $150 million over a five years period beginning on May 1, 2016, with the shares vesting incrementally each time Amazon makes a payment totaling $5 million to the Company. As of June 30, 2018, the Company granted a total amount of 598,647 warrants.

The Company utilizes a Monte Carlo simulation approach to estimate the fair value of the warrants, which requires inputs such as common ordinary share price, the warrant strike price, estimated ordinary share price volatility and risk-free interest rate, among others. The Company recognized a reduction to revenues of $1.5 million and $2.4 million during the six months ended June 30, 2018 and 2017, respectively.

Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Income (Loss) [Abstract]

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

NOTE 10:- ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss):

	Unrealized loss on marketable securities			Unrealized gain (loss) on cash flow hedges			Foreign currency translation adjustment			Total
	Unaudited
Six months ended June 30, 2018:

Beginning balance	$	(30	)	$	45		$	286		$	301
Other comprehensive income (loss) before reclassifications		(113	)		(121	)		(6	)		(240	)
Amounts reclassified from accumulated other comprehensive income (loss)		-			24			-			24
Net current period other comprehensive loss		(113	)		(97	)		(6	)		(216	)
Ending Balance	$	(143	)	$	(52	)	$	280		$	85

Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Significant Accounting Policies [Abstract]

Unaudited interim consolidated financial statements:

Use of estimates:

Impact of recently issued accounting standards:

Recently adopted accounting standard:

Revenue Recognition:

Revenue disaggregated by revenue source for the six months ended June 30, 2018 and 2017, consists of the following:

	Six months ended June 30,
	2018		2017

Systems	$	33,150	$	28,766
Ink and consumables		25,700		21,640
Spare parts		6,621		4,168
Service contracts		1,525		1,117

Total revenue	$	66,996	$	55,691

The following table presents revenue disaggregated by geography based on customer location:

	Six months ended June 30,
	2018		2017

U.S	$	36,137	$	28,422
EMEA		22,165		15,763
Asia Pacific		6,938		8,560
Other		1,756		2,946

Total revenue	$	66,996	$	55,691

The following table represents the outstanding performance obligations as of June 30, 2018, included in deferred revenues which are expected to be satisfied and recognized in future periods:

	Remainder of 2018		2019		2020 and thereafter
Product	$	528	$	-	$	-
Services		2,537		2,016		627

Total	$	3,065	$	2,016	$	627

Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Significant Accounting Policies [Abstract]

Schedule of revenue disaggregated by revenue source

	Six months ended June 30,
	2018		2017

Systems	$	33,150	$	28,766
Ink and consumables		25,700		21,640
Spare parts		6,621		4,168
Service contracts		1,525		1,117

Total revenue	$	66,996	$	55,691

Schedule of revenue disaggregated by geography based on customer location

	Six months ended June 30,
	2018		2017

U.S	$	36,137	$	28,422
EMEA		22,165		15,763
Asia Pacific		6,938		8,560
Other		1,756		2,946

Total revenue	$	66,996	$	55,691

Schedule of outstanding performance obligations of deferred revenues

	Remainder of 2018		2019		2020 and thereafter
Product	$	528	$	-	$	-
Services		2,537		2,016		627

Total	$	3,065	$	2,016	$	627

Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2018

Marketable Securities [Abstract]

Summary of marketable securities

	June 30, 2018
	Amortized cost		Gross unrealized gain		Gross unrealized loss			Fair value

Matures within one year:
Corporate debentures	$	10,191	$	160	$	-		$	10,351
Government debentures		284		22		-			306
		10,475		182		-			10,657

Matures after one year through three years:
Corporate debentures		54,855		-		(288	)		54,567
Government debentures		12,811		-		(37	)		12,774
		67,666		-		(325	)		67,341

Total	$	78,141	$	182	$	(325	)	$	77,998

	December 31, 2017
	Amortized cost		Gross unrealized gain		Gross unrealized loss			Fair value

Matures within one year:
Corporate debentures	$	5,190	$	41	$	-		$	5,231
Government debentures		295		11		-			306
		5,485		52		-			5,537

Matures after one year through three years:
Corporate debentures		56,514		-		(65	)		56,449
Government debentures		12,403		-		(17	)		12,386
		68,917		-		(82	)		68,835

Total	$	74,402	$	52	$	(82	)	$	74,372

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Measurements [Abstract]

Summary of fair value measurement

	As of June 30, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Marketable securities		-	$	77,998		-	$	77,998
Total financial assets		-	$	77,998		-	$	77,998

Liabilities:
Payment obligation related to acquisition		-		-	$	356	$	356
Foreign currency derivative contracts		-		52				52
Total liabilities		-	$	52	$	356	$	408

	As of December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Marketable securities		-	$	74,372		-	$	74,372
Foreign currency derivative contracts		-		45		-		45
Total financial assets		-	$	74,417		-	$	74,417

Liabilities:
Payment obligation related to acquisition		-		-	$	334	$	334
Total liabilities		-		-	$	334	$	334

Schedule of fair value measurements within level 3

Total fair value as of January 1, 2018	$	334
Accretion of payments obligation		22

Total fair value as of June 30, 2018	$	356

Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventories [Abstract]

Schedule of inventories

	June 30,		December 31,
	2018		2017

Raw materials and components	$	15,115	$	15,756
Finished products		10,008		19,099

	$	25,123	$	34,855

Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted net earnings per share

	Six months ended June 30,
	2018		2017
Numerator for basic and diluted net earnings per share:

Net income (loss)	$	2,339	$	(1,522	)

Weighted average shares outstanding, net of treasury stock:

Denominator for basic net income (loss) per share		34,295,752		33,151,633

Effect of dilutive securities:
Employee share options		589,641		-
Denominator for diluted net income (loss) per share		34,885,393		33,151,633

Basic and diluted net income (loss) per share	$	0.07	$	(0.05	)

Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2018

Shareholders' Equity [Abstract]

Summary of company's share option activity

	Number of shares upon exercise			Weighted average exercise price		Weighted- average remaining contractual term (in years)		Aggregate intrinsic value (1)

Outstanding at beginning of year		2,360,647		$	10.76		8.05
Granted		3,333			13.40		9.64
Exercised		(261,670	)		5.69		8.79
Forfeited		(99,326	)		12.50		7.12

Outstanding at end of year		2,002,984		$	11.5		7.78	$	12,788

Exercisable at end of year		944,037		$	8.67		6.95	$	8,641

(1)

Summary of the RSUs activity

	Six months ended
	June 30, 2018

Outstanding at December 31, 2017		88,759
Granted		144,801
Vested		(825	)
Forfeited		(11,608	)
Outstanding as of June 30,2018		221,127

Schedule of share based compensation expense

	Six months ended June 30,
	2018		2017

Cost of products	$	189	$	204
Cost of services		152		83
Research and development		402		297
Selling and marketing		476		430
General and administrative		1,161		934

Total share-based compensation expense	$	2,380	$	1,948

Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Income (Loss) [Abstract]

Schedule of changes in accumulated balances of other comprehensive income (loss)

	Unrealized loss on marketable securities			Unrealized gain (loss) on cash flow hedges			Foreign currency translation adjustment			Total
	Unaudited
Six months ended June 30, 2018:

Beginning balance	$	(30	)	$	45		$	286		$	301
Other comprehensive income (loss) before reclassifications		(113	)		(121	)		(6	)		(240	)
Amounts reclassified from accumulated other comprehensive income (loss)		-			24			-			24
Net current period other comprehensive loss		(113	)		(97	)		(6	)		(216	)
Ending Balance	$	(143	)	$	(52	)	$	280		$	85

General (Details) - USD ($) $ in Thousands		1 Months Ended	6 Months Ended
General (Details) - USD ($) $ in Thousands	May 15, 2017	Jan. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
General (Textual)
Aggregate net proceeds received from offering				$ 35,077
Secondary Offering [Member]
General (Textual)
Ordinary shares issued under offering	$ 4,250,000	$ 8,625,000
Aggregate net proceeds received from offering		$ 35,077

Significant Accounting Policies (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Significant Accounting Policies [Line Items]
Total revenue	$ 66,996	$ 55,691
Systems [Member]
Significant Accounting Policies [Line Items]
Total revenue	33,150	28,766
Ink and consumables [Member]
Significant Accounting Policies [Line Items]
Total revenue	25,700	21,640
Spare parts [Member]
Significant Accounting Policies [Line Items]
Total revenue	6,621	4,168
Service contracts [Member]
Significant Accounting Policies [Line Items]
Total revenue	$ 1,525	$ 1,117

Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Significant Accounting Policies [Line Items]
Total revenue	$ 66,996	$ 55,691
U.S [Member]
Significant Accounting Policies [Line Items]
Total revenue	36,137	28,422
EMEA [Member]
Significant Accounting Policies [Line Items]
Total revenue	22,165	15,763
Asia Pacific [Member]
Significant Accounting Policies [Line Items]
Total revenue	6,938	8,560
Other [Member]
Significant Accounting Policies [Line Items]
Total revenue	$ 1,756	$ 2,946

Significant Accounting Policies (Details 2) $ in Thousands	Jun. 30, 2018 USD ($)
Remainder of 2018 [Member]
Significant Accounting Policies [Line Items]
Total	$ 3,065
2019 [Member]
Significant Accounting Policies [Line Items]
Total	2,016
2020 and thereafter [Member]
Significant Accounting Policies [Line Items]
Total	627
Product [Member] \| Remainder of 2018 [Member]
Significant Accounting Policies [Line Items]
Total	528
Product [Member] \| 2019 [Member]
Significant Accounting Policies [Line Items]
Total
Product [Member] \| 2020 and thereafter [Member]
Significant Accounting Policies [Line Items]
Total
Services [Member] \| Remainder of 2018 [Member]
Significant Accounting Policies [Line Items]
Total	2,537
Services [Member] \| 2019 [Member]
Significant Accounting Policies [Line Items]
Total	2,016
Services [Member] \| 2020 and thereafter [Member]
Significant Accounting Policies [Line Items]
Total	$ 627

Significant Accounting Policies (Details Textual) $ in Thousands	Jun. 30, 2018 USD ($)
Significant Accounting Policies (Textual)
Deferred revenues	$ 672

Marketable Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 78,141	$ 74,402
Gross unrealized gain	182	52
Gross unrealized loss	(325)	(82)
Fair value	77,998	74,372
Matures within one year [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	10,475	5,485
Gross unrealized gain	182	52
Gross unrealized loss
Fair value	10,657	5,537
Matures after one year through three years [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	67,666	68,917
Gross unrealized gain
Gross unrealized loss	(325)	(82)
Fair value	67,341	68,835
Matures within one year: Corporate debentures [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	10,191	5,190
Gross unrealized gain	160	41
Gross unrealized loss
Fair value	10,351	5,231
Matures within one year: Government debentures [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	284	295
Gross unrealized gain	22	11
Gross unrealized loss
Fair value	306	306
Matures after one year through three years: Corporate debentures [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	54,855	56,514
Gross unrealized gain
Gross unrealized loss	(288)	(65)
Fair value	54,567	56,449
Matures after one year through three years: Government debentures [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	12,811	12,403
Gross unrealized gain
Gross unrealized loss	(37)	(17)
Fair value	$ 12,774	$ 12,386

Marketable Securities (Details Textual)	6 Months Ended
Marketable Securities (Details Textual)	Jun. 30, 2018
Marketable Securities (Textual)
Marketable securities unrealized losses, description	All investments with an unrealized loss as of June 30, 2018 and 2017 are with continuous unrealized losses for less than 12 months.

Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets:
Marketable securities	$ 77,998	$ 74,372
Foreign currency derivative contracts		45
Total financial assets	77,998	74,417
Liabilities:
Payment obligation related to acquisition	356	334
Foreign currency derivative contracts	52
Total liabilities	408	334
Level 1 [Member]
Assets:
Marketable securities
Foreign currency derivative contracts
Total financial assets
Liabilities:
Payment obligation related to acquisition
Foreign currency derivative contracts
Total liabilities
Level 2 [Member]
Assets:
Marketable securities	77,998	74,372
Foreign currency derivative contracts		45
Total financial assets	77,998	74,417
Liabilities:
Payment obligation related to acquisition
Foreign currency derivative contracts	52
Total liabilities	52
Level 3 [Member]
Assets:
Marketable securities
Foreign currency derivative contracts
Total financial assets
Liabilities:
Payment obligation related to acquisition	356	334
Total liabilities	$ 356	$ 334

Fair Value Measurements (Details 1) $ in Thousands	6 Months Ended
Fair Value Measurements (Details 1) $ in Thousands	Jun. 30, 2018 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value as of January 1, 2018	$ 334
Total fair value as of June 30, 2018	408
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value as of January 1, 2018	334
Accretion of payments obligation	22
Total fair value as of June 30, 2018	$ 356

Fair Value Measurements (Details Textual)	6 Months Ended
Fair Value Measurements (Details Textual)	Jun. 30, 2018
Fair Value Measurements (Textual)
Discount rate	15.00%

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of inventory
Raw materials and components	$ 15,115	$ 15,756
Finished products	10,008	19,099
Inventories	$ 25,123	$ 34,855

Inventories (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Inventories (Textual)
Inventory write-offs amount	$ 903	$ 1,333

Derivatives and Hedging Activities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivatives and Hedging Activities (Textual)
Notional principal amount of hedging contracts	$ 5,836	$ 3,651
Other payables and accrued expenses	$ 52
Other accounts receivable and prepaid expenses		$ 45

Commitments and Contingent Liabilities (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) Banks	Jun. 30, 2017 USD ($)
Commitments and Contingent Liabilities (Textual)
Lines of credit maximum borrowings	$ 3,000
Interest rate, description	These lines of credit are unsecured and available provided that the Company maintains a 30% ratio of total tangible shareholders' equity to total tangible assets and that the total credit use will be less than 70% of the Company and its subsidiaries' receivables. Interest rates across these credit lines varied from 0.2% to Prime (Israel Interbank Offered Rate) +0.7% (currant 2.3%) as of June 30, 2018.
Purchase commitments	$ 22,652
Maximum amount of royalties payment	$ 625
Royalties percentage	2.50%
Royalty expense	$ 312	$ 312
Number of banks \| Banks	2
Actual Guaranteed rent	$ 379

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Numerator for basic and diluted net earnings per share:
Net income (loss)	$ 2,339	$ (1,522)
Weighted average shares outstanding, net of treasury stock:
Denominator for basic net income (loss) per share	34,295,752	33,151,633
Effect of dilutive securities:
Employee share options	589,641
Denominator for diluted net income (loss) per share	34,885,393	33,151,633
Basic and diluted net income (loss) per share	$ 0.07	$ (0.05)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Shareholders' Equity (Details)
$ / shares in Units, $ in Thousands

6 Months Ended

Jun. 30, 2018

USD ($)

$ / shares

Number of shares upon exercise

Outstanding at beginning of year | shares

2,360,647

Weighted average exercise price

Outstanding at beginning of year | $ / shares

$ 10.76

Stock Option [Member]

Number of shares upon exercise

Outstanding at beginning of year | shares

2,360,647

Granted | shares

3,333

Exercised | shares

(261,670)

Forfeited | shares

(99,326)

Outstanding at end of year | shares

2,002,984

Exercisable at end of year | shares

944,037

Weighted average exercise price

Outstanding at beginning of year | $ / shares

$ 10.76

Granted | $ / shares

13.40

Exercised | $ / shares

5.69

Forfeited | $ / shares

12.50

Outstanding at end of year | $ / shares

11.5

Exercisable at end of year | $ / shares

$ 8.67

Weighted- average remaining contractual term (in years)

Outstanding at beginning of year

8 years 18 days

Granted

9 years 7 months 21 days

Exercised

8 years 9 months 14 days

Forfeited

7 years 1 month 13 days

Outstanding at end of year

7 years 9 months 11 days

Exercisable at end of year

6 years 11 months 12 days

Aggregate intrinsic value

Outstanding at end of year | $

$ 12,788

^[1]

Exercisable at end of year | $

$ 8,641

^[1]

[1]	Calculation of aggregate intrinsic value for options outstanding and exercisable as of June 30, 2018 is based on the share price of the Company's ordinary shares as of June 30, 2018 which was $17.8 per share.

Shareholders' Equity (Details 1)	6 Months Ended
Shareholders' Equity (Details 1)	Jun. 30, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of year	2,360,647
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of year	88,759
Granted	144,801
Vested	(825)
Forfeited	(11,608)
Outstanding at end of year	221,127

Shareholders' Equity (Details 2) - USD ($) $ in Thousands	6 Months Ended
Shareholders' Equity (Details 2) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 2,380	$ 1,948
Cost of products [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	189	204
Cost of services [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	152	83
Research and development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	402	297
Selling and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	476	430
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 1,161	$ 934

Shareholders' Equity (Details Textual) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended		12 Months Ended
	Jan. 10, 2017 USD ($) $ / shares shares	Jan. 31, 2017 USD ($) shares	Jun. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) $ / shares	Dec. 31, 2014	Jun. 30, 2018 ₪ / shares
Shareholders' Equity (Textual)
Ordinary shares sold \| shares		8,625,000
Net proceeds from offering \| $		$ 35,077		$ 35,077
Ordinary shares offering, description		The company closed a follow on and secondary offering where by 8,625,000 ordinary shares were sold in the transaction to the public of which 2,300,000 were issued by the Company and 6,325,000 were sold by the selling shareholders (inclusive of 1,125,000 ordinary shares pursuant to the full exercise of an overallotment option granted to the underwriters).
Unrecognized compensation cost \| $			$ 7,124
Weighted average vesting period			2 years 7 months 2 days
Options exercisable, description			Options granted before 2014 generally vest in portions as follows: 50% of total options are exercisable two years after the date determined for each optionee, a further 25% three years after the date determined for each optionee and a 25% four years after the date determined for each optionee.		25% of total options are exercisable one year after the date determined for each optionee and a further 6.25% at the end of each subsequent three-month period for 3 years. Under the Equity Incentive Plans and starting 2017, the Company grants Restricted Stock Units ("RSUs"). The RSU's generally vest over a period of four years of employment. Options and RSU that have vested are exercisable for up to 10 years from the grant date of the options or RSU to each employee.
Weighted average fair value of options granted \| $ / shares			$ 18.05	$ 10.81
Fair value of options vested per share \| $ / shares			$ 17.8
Recognized reduction revenues \| $			$ 1,500	$ 2,400
Warrants [Member]
Shareholders' Equity (Textual)
Granted of total warrant \| shares			598,647
Restricted Stock Units (RSUs) [Member]
Shareholders' Equity (Textual)
Weighted average fair value of options granted \| $ / shares			$ 14.04	$ 21.15
Master Purchase Agreement [Member]
Shareholders' Equity (Textual)
Warrants to purchase ordinary shares \| shares	2,932,176
Exercise price \| $ / shares	$ 13.03
Payments for purchased products and services \| $	$ 150,000
Vesting period	5 years
Agreement term, description	The warrants are subject to vesting as a function of payments for purchased products and services of up to $150 million over a five years period beginning on May 1, 2016, with the shares vesting incrementally each time Amazon makes a payment totaling $5 million to the Company.
Option [Member]
Shareholders' Equity (Textual)
Ordinary shares, par value \| ₪ / shares						₪ 0.01

Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($)
Schedule of changes in accumulated balances of other comprehensive income (loss)
Beginning balance	$ 301
Other comprehensive income (loss) before reclassifications	(240)
Amounts reclassified from accumulated other comprehensive income (loss)	24
Net current period other comprehensive loss	(216)
Ending Balance	85
Unrealized loss on marketable securities [Member]
Schedule of changes in accumulated balances of other comprehensive income (loss)
Beginning balance	(30)
Other comprehensive income (loss) before reclassifications	(113)
Amounts reclassified from accumulated other comprehensive income (loss)
Net current period other comprehensive loss	(113)
Ending Balance	(143)
Unrealized gain (loss) on cash flow hedges [Member]
Schedule of changes in accumulated balances of other comprehensive income (loss)
Beginning balance	45
Other comprehensive income (loss) before reclassifications	(121)
Amounts reclassified from accumulated other comprehensive income (loss)	24
Net current period other comprehensive loss	(97)
Ending Balance	(52)
Foreign currency translation adjustment [Member]
Schedule of changes in accumulated balances of other comprehensive income (loss)
Beginning balance	286
Other comprehensive income (loss) before reclassifications	(6)
Amounts reclassified from accumulated other comprehensive income (loss)
Net current period other comprehensive loss	(6)
Ending Balance	$ 280