CyberArk Software (CYBR) F-1 29 May 15 Registration statement (foreign) Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015
Document And Entity Information [Abstract]
Document Type	F-1
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Trading Symbol	CYBR
Entity Registrant Name	CyberArk Software Ltd.
Entity Central Index Key	1598110

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:
Cash and cash equivalents	$162,946	$124,184	$62,379
Short-term bank deposits	28,722	52,997	2,989
Trade receivables	14,912	19,263	12,728
Prepaid expenses and other current assets	2,998	2,078	2,083
Short-term deferred tax asset	3,856	3,788	2,647
Total current assets	213,434	202,310	82,826
LONG-TERM ASSETS:
Property and equipment, net	2,321	2,148	1,272
Severance pay fund	3,046	3,060	3,071
Prepaid expenses and other long-term assets	1,044	1,021	1,012
Long-term deferred tax asset	2,215	2,013	1,451
Total long-term assets	8,626	8,242	6,806
TOTAL ASSETS	222,060	210,552	89,632
CURRENT LIABILITIES:
Trade payables	2,481	1,835	1,766
Employees and payroll accruals	7,139	10,322	6,821
Deferred revenues	28,818	22,594	18,175
Accrued expenses and other current liabilities	6,140	6,942	4,517
Total current liabilities	44,578	41,693	31,279
LONG-TERM LIABILITIES:
Deferred revenues	12,513	9,566	6,303
Other long-term liabilities	217	184
Accrued severance pay	4,312	4,101	4,070
Warrants to purchase preferred shares			2,134
Total long-term liabilities	17,042	13,851	12,507
TOTAL LIABILITIES	61,620	55,544	43,786
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY:
Ordinary shares of NIS 0.01 par value - Authorized: 31,785,000 shares, 250,000,000 shares and 250,000,000 shares at December 31, 2013 and 2014 and March 31, 2015 (unaudited), respectively; Issued and outstanding: 7,019,352 shares, 30,501,352 shares and 30,757,908 shares at December 31, 2013 and 2014 and March 31, 2015 (unaudited), respectively;	80	79	17
Preferred shares of NIS 0.01 par value - Authorized: 18,215,000 shares, 0 shares and 0 shares at December 31, 2013 and 2014 and March 31, 2015 (unaudited), respectively; Issued and outstanding: 15,958,290 shares, 0 shares and 0 shares at December 31, 2013 and 2014 and March 31, 2015 (unaudited), respectively;			41
Additional paid-in capital	135,713	134,486	34,811
Accumulated other comprehensive income (loss)	-295	-333	155
Retained earnings	24,942	20,776	10,822
Total shareholders' equity	160,440	155,008	45,846
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$222,060	$210,552	$89,632

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Ordinary shares, par value	$0.01	$0.01	$0.01
Ordinary shares, authorized	250,000,000	250,000,000	31,785,000
Ordinary shares, issued	30,757,908	30,501,352	7,019,352
Ordinary shares, outstanding	30,757,908	30,501,352	7,019,352
Preferred stock, par value	$0.01	$0.01	$0.01
Preferred stock, shares authorized	0	0	18,215,000
Preferred stock, issued	0	0	15,958,290
Preferred stock, outstanding	0	0	15,958,290

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
License	$19,978	$9,120	$61,320	$38,907	$27,029
Maintenance and professional services	12,937	8,275	41,679	27,250	20,179
Revenues	32,915	17,395	102,999	66,157	47,208
Cost of revenues:
License	550	628	2,654	1,216	1,002
Maintenance and professional services	3,707	2,425	12,053	7,860	5,922
Cost of revenues	4,257	3,053	14,707	9,076	6,924
Gross profit	28,658	14,342	88,292	57,081	40,284
Operating expenses:
Research and development	4,117	3,237	14,400	10,404	7,273
Sales and marketing	13,460	9,433	44,943	32,840	22,081
General and administrative	3,578	1,481	8,495	4,758	3,297
Total operating expenses	21,155	14,151	67,838	48,002	32,651
Operating income	7,503	191	20,454	9,079	7,633
Financial income (expenses), net	-1,631	-1,356	-5,988	-1,124	4
Income (loss) before taxes on income	5,872	-1,165	14,466	7,955	7,637
Taxes benefit (taxes on income)	-1,706	-83	-4,512	-1,320	225
Net income (loss)	4,166	-1,248	9,954	6,635	7,862
Basic net income (loss) per ordinary share	$0.14	($0.35)	$0.46	$0.25	$0.51
Diluted net income (loss) per ordinary share	$0.12	($0.35)	$0.34	$0.14	$0.31
Other comprehensive income (loss)
Unrealized gain (loss) on foreign currency cash flow hedges	38	-73	-488	155
Other comprehensive income (loss) for the period	38	-73	-488	155
Total comprehensive income (loss)	$4,204	($1,321)	$9,466	$6,790	$7,862

STATEMENTS_OF_CHANGES_IN_SHARE

STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)	Total	Preferred Shares	Ordinary Shares	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained Earnings
In Thousands, except Share data
Balance at Dec. 31, 2011	$30,290	$41	$16	$33,908		($3,675)
Balance, shares at Dec. 31, 2011		15,958,290	6,550,780
Exercise of options granted to employees	58			58
Exercise of options granted to employees, shares			156,900
Share-based compensation expenses related to option granted to employees	284			284
Net income	7,862					7,862
Balance at Dec. 31, 2012	38,494	41	16	34,250		4,187
Balance, shares at Dec. 31, 2012		15,958,290	6,707,680
Exercise of options granted to employees	159		1	158
Exercise of options granted to employees, shares			311,672
Other comprehensive income (loss)	155				155
Share-based compensation expenses related to option granted to employees	403			403
Net income	6,635					6,635
Balance at Dec. 31, 2013	45,846	41	17	34,811	155	10,822
Balance, shares at Dec. 31, 2013	22,977,642	15,958,290	7,019,352
Exercise of options granted to employees	190		1	189
Exercise of options granted to employees, shares	255,562		255,562
Other comprehensive income (loss)	-488				-488
Share-based compensation expenses related to option granted to employees	1,573			1,573
Exercise of warrants for preferred Shares	7,195	1		7,194
Exercise of warrants for preferred Shares, shares		493,360
Conversion of Preferred Shares		-42	44	-2
Conversion of Preferred Shares, shares		-16,451,650	17,062,438
Issuance of ordinary shares upon initial public offering ,net	88,468		17	88,451
Issuance of common stock upon initial public offering, shares			6,164,000
Tax benefit related to exercise of share options	2,270			2,270
Net income	9,954					9,954
Balance at Dec. 31, 2014	155,008		79	134,486	-333	20,776
Balance, shares at Dec. 31, 2014	30,501,352		30,501,352
Exercise of options granted to employees	234		1	233
Exercise of options granted to employees, shares	242,257		256,556
Other comprehensive income (loss)	38				38
Share-based compensation expenses related to option granted to employees	465			465
Tax benefit related to exercise of share options	529			529
Net income	4,166					4,166
Balance at Mar. 31, 2015	$160,440		$80	$135,713	($295)	$24,942
Balance, shares at Mar. 31, 2015	30,757,908		30,757,908

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$4,166	($1,248)	$9,954	$6,635	$7,862
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	222	227	746	475	329
Share based compensation expenses	465	156	1,573	403	284
Tax benefit related to exercise of share options	529		645
Deferred income taxes, net	-245	95	45	-769	-458
Decrease (increase) in trade receivables	4,351	4,752	-6,535	-3,257	-3,074
Decrease (increase) in prepaid expenses and other current and long-term assets	-932	205	-159	-920	97
Increase (decrease) in trade payables	871	-1,058	-145	651	583
Changes in fair value of warrants to purchase preferred shares		1,396	4,309	1,446	176
Increase in short term and long term deferred revenues	9,171	7,917	7,682	9,410	5,766
Increase (decrease) in employees and payroll accruals	-3,183	-2,032	3,501	2,651	1,358
Increase (decrease) in accrued expenses and other current and long-term liabilities	-771	-1,523	2,182	3,191	652
Increase in accrued severance pay, net	225	11	42	243	82
Net cash provided by operating activities	14,869	8,898	23,840	20,159	13,657
Cash flows from investing activities:
Proceeds from short and long term deposits	24,279	1,290	2,533	8,735	4,555
Investment in short and long term deposits			-52,570	-8,809	-7,102
Purchase of property and equipment	-620	-741	-1,408	-752	-686
Net cash provided (used in) investing activities	23,659	549	-51,445	-826	-3,233
Cash flows from financing activities:
Issuance of shares, net		-147	88,468		-387
Proceeds from exercise of options and warrants	234	50	942	159	58
Net cash provided by (used in) financing activities	234	-97	89,410	159	-329
Increase in cash and cash equivalents	38,762	9,350	61,805	19,492	10,095
Cash and cash equivalents at the beginning of the period	124,184	62,379	62,379	42,887	32,792
Cash and cash equivalents at the end of the period	162,946	71,729	124,184	62,379	42,887
Non-cash activities:
Purchase of property and equipment in credit	79	87	304	90	32
Non-cash issuance expenses		1,092
Supplemental disclosure of cash flow activities:
Cash paid during the year for taxes	$2,515	$518	$981	$287	$76

GENERAL

GENERAL	3 Months Ended
	Mar. 31, 2015
Text Block [Abstract]
GENERAL	NOTE 1:	GENERAL
		a.	CyberArk Software Ltd. (the “Company”) is an Israeli company that develops, markets and sells software-based security solutions for the enterprise. The Company’s platform enables organizations to safeguard and monitor their privileged accounts, which are those accounts within an organization that have access to the organization’s high value assets and are located across its IT infrastructure. The Company’s software provides customers with the ability to protect, detect, monitor and control access to privileged accounts in order to break the lifecycle of a targeted cyber attack before it can cause damage to an enterprise.
		b.	In February 2000, the Company established Cyber-Ark Software Inc., a wholly-owned Subsidiary in the U.S. (the “U.S. Subsidiary”). The U.S. Subsidiary is engaged in marketing and selling the Company’s products in the U.S. In 2008, the Company established Cyber-Ark Software UK (the “U.K. Subsidiary”). The U.K. Subsidiary was engaged primarily in marketing the Company’s products in the U.K. and parts of Europe and from the middle of 2013 is also engaged in selling the Company’s products. In 2013, the Company established Cyber-Ark Software GmbH (the “Germany Subsidiary”) which is engaged primarily in marketing the Company’s products in Germany, Austria and Switzerland.
		c.	In September 2014, the Company completed its initial public offering (“IPO”) in which the Company issued and sold 5,360,000 ordinary shares at a public offering price of $16.00 per share and the underwriters exercised their option to purchase an additional 804,000 ordinary shares at the same IPO price per share. The total net proceeds received from the IPO were $88,468 after deducting underwriting discounts of $6,904 and other offering expenses of $3,846. Refer also to Note 7.b.
		d.	In March 2015, the Company completed a secondary offering (the “Secondary Offering”) in which certain shareholders sold 4,000,000 ordinary shares at a public offering price of $51.00 per share and the underwriters exercised their option to purchase an additional 600,000 ordinary shares at the same price per share. The Company did not receive any proceeds from the sale of ordinary shares in the Secondary Offering. Secondary Offering related expenses were $1,081.

SIGNIFICANT_ACCOUNTING_POLICIE

SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
SIGNIFICANT ACCOUNTING POLICIES	NOTE 2:	SIGNIFICANT ACCOUNTING POLICIES
	The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”).
		a.	Use of estimates:
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The Company evaluates on an ongoing basis its assumptions, including those related to contingencies, income taxes, deferred taxes and liabilities, share-based compensation cost, as well as in estimates used in applying the revenue recognition policy. The Company’s management believes that the estimates, judgment and assumptions used are reasonable based upon information available at the time they are made. These estimates, judgments and assumptions can affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.
		b.	Principles of consolidation:
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. Intercompany transactions and balances, have been eliminated upon consolidation.
		c.	Unaudited interim financial information:
	The accompanying consolidated balance sheet as of March 31, 2014 and 2015, the consolidated statements of operations and comprehensive income (loss) and cash flows for the three months ended March 31, 2014 and 2015 and the shareholders’ equity for the three months ended March 31, 2015 are unaudited. The unaudited interim financial statements have been prepared on the same basis as the annual consolidated statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s financial position and results of operations and cash flows for the three months ended March 31, 2014 and 2015. The financial data and the other information disclosed in these notes to the consolidated financial statements related to the three month periods are unaudited. The results of the three months ended March 31, 2015 are not necessarily indicative of the results to be expected for the fiscal year ending December 31, 2015 or for any other interim period or for any other future year.
		d.	Financial statements in U.S. dollars:
	A majority of the Company’s revenues are generated in U.S. dollars. In addition, the equity investments were in U.S. dollars and substantial portion of the Company costs are incurred in U.S dollars. The Company’s management believes that the U.S. dollar is the currency of the primary economic environment in which the Company operates. Thus, the functional and reporting currency of the Company is the U.S dollar.
	Accordingly, monetary accounts maintained in currencies other than the U.S. dollar are re-measured into U.S. dollars in accordance with Statement of the Accounting Standard Codification (“ACS”) No. 830 “Foreign Currency Matters” (“ASC No. 830”). All transaction gains and losses of the re-measured monetary balance sheet items are reflected in the statement of comprehensive income as financial income or expenses, as appropriate.
	The functional currency of the U.S. Subsidiary is the U.S. dollar.
	The functional currency of the U.K. Subsidiary and Germany Subsidiary is the U.S. dollar as these subsidiaries’ revenues, intercompany transactions, budgets and financing are denominated in U.S. dollars.
		e.	Cash and cash equivalents:
	Cash equivalents are short-term highly liquid investments that are readily convertible to cash with original maturities of three months or less, at the date acquired.
		f.	Short-term bank deposits:
	Short-term bank deposits are deposits with maturities of up to one year. As of December 31, 2013 and 2014 and March 31, 2015 (unaudited) the Company’s bank deposits were in U.S. dollars, Euros and New Israel Shekels (“NIS”) and bore interest at weighted average interest rates of 0.5%, 0.6% and 0.4%, respectively. Short-term bank deposits are presented at their cost, including accrued interest. A portion of these deposits is used as security for the rental of premises and as a security for the Company’s hedging activities.
		g.	Property and equipment:
	Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets at the following annual rates:
			%
	Computers and related equipment		25 - 33
	Office furniture and equipment		20-Jul
	Trade show equipment		33
	Leasehold improvements		Over the shorter of the related
			lease period or the life of the
			asset
		h.	Long-lived assets:
	The long-lived assets of the Company and its subsidiaries are reviewed for impairment in accordance with ASC No. 360, “Property, Plant and Equipment” (“ASC No. 360”), whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the future undiscounted cash flows expected to be generated by the assets. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. During the years ended 2012, 2013 and 2014 and the three months ended March 31, 2015 (unaudited), no impairment losses have been identified.
		i.	Derivative instruments:
	ASC No. 815, “Derivative and Hedging”, requires companies to recognize all of their derivative instruments as either assets or liabilities in the statement of financial position at fair value.
	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.
	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 and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item, if any, is recognized in current earnings during the period of change.
	To hedge against the risk of overall changes in cash flows resulting from foreign currency salary payments during the year, the Company has instituted a foreign currency cash flow hedging program. The Company hedges portions of its forecasted expenses denominated in NIS. These forward and option contracts are designated as cash flow hedges, as defined by ASC 815, and are all effective, as their critical terms match underlying transactions being hedged.
	As of December 31, 2014 and March 31, 2015 (unaudited), the amount recorded in accumulated other comprehensive loss from the Company’s currency forward and option transactions was $333 (net of tax in the amount of $63) and $295 (net of tax in the amount of $56) (unaudited), respectively, and presented also as part of accrued expenses and other current liabilities or as prepaid and other current assets. Such amount will be recorded in the Company’s earnings during 2015 and 2016. At December 31, 2014 and March 31, 2015 (unaudited), the notional amounts of foreign exchange forward and options contracts into which the Company entered were $10,450 and $16,150 (unaudited), respectively. The foreign exchange forward and options contracts will expire by the end of February 2016.
		j.	Severance pay:
	The Israeli Severance Pay Law, 1963 (“Severance Pay Law”), specifies that employees are entitled to severance payment, following the termination of their employment. Under the Severance Pay Law, the severance payment is calculated as one month salary for each year of employment, or a portion thereof.
	Part of the Company’s liability for severance pay is covered by the provisions of Section 14 of the Severance Pay Law (“Section 14”). Under Section 14 employees are entitled to monthly deposits, at a rate of 8.33% of their monthly salary, continued on their behalf to their insurance funds. Payments in accordance with Section 14 release the Company from any future severance payments in respect of those employees. As a result, the Company does not recognize any liability for severance pay due to these employees and the deposits under Section 14 are not recorded as an asset in the Company’s balance sheet.
	For the Company’s employees in Israel who are not subject to Section 14, the Company calculated the liability for severance pay pursuant to the Severance Pay Law based on the most recent salary of these employees multiplied by the number of years of employment as of the balance sheet date. The Company’s liability for these employees is fully provided for via monthly deposits with severance pay funds, insurance policies and an accrual. The value of these deposits is recorded as an asset on the Company’s balance sheet.
	Severance expense for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), amounted to $667, $1,057, $1,187, $292 (unaudited) and $531 (unaudited), respectively.
		k.	U.S. employees defined contribution plan:
	The U.S. Subsidiary has a 401(K) defined contribution plan covering certain full time employees in the U.S. All eligible employees may elect to contribute up to an annual maximum, of lesser of 60% of their annual compensation to the plan through salary deferrals, subject to Internal Revenue Service limits but not greater than $17.5 per year (for certain employees over 50 years of age the maximum contribution is $23 per year).
	The U.S. Subsidiary matches amount equal to 100% of the first 3% of the employees Compensation that they contribute to the Plan and 50% of the next 2% of their Compensation that they contribute to the Plan with a limit of $9.8 a year. During the years ended December 31, 2012, 2013 and 2014 the U.S. Subsidiary recorded expenses for matching contributions in amounts of $237, $372 and $544, respectively.
		l.	Revenue recognition:
	The Company generates revenues from licensing the rights to use its software products and from maintenance and professional services. The Company sell its products through its direct sales force and indirectly through resellers.
	The Company accounts for its software licensing sales in accordance with ASC 985-605, “Software Revenue Recognition”. ASC 985-605 generally requires revenue earned on software arrangements involving multiple elements to be allocated to each element based on the relative fair value of the elements when Vendor Specific Objective Evidence (“VSOE”) of fair value exists for all elements and to be allocated to the different elements in the arrangement under the “residual method” when VSOE of fair value exists for all undelivered elements and no VSOE exists for the delivered elements.
	Maintenance and professional services are sold separately and therefore the selling price (VSOE) is based on stand-alone transactions.
	Under the residual method, at the outset of the arrangement with the customer, the Company defers revenue for the fair value of its undelivered elements and recognizes revenue for the remainder of the arrangement fee attributable to the elements initially delivered in the arrangement (software element) when all other criteria in ASC 985-605 have been met. Any discount in the arrangement is allocated to the delivered element.
	Software license revenues are recognized when persuasive evidence of an arrangement exists, the software license has been delivered, there are no uncertainties surrounding product acceptance, there are no significant future performance obligations, the license fees are fixed or determinable and collection of the license fee is considered probable. Fees for arrangements with payment terms extending beyond customary payment terms are considered not to be fixed or determinable, in which case revenue is deferred and recognized when payments become due from the customer provided that all other revenue recognition criteria have been met.
	Revenues from maintenance and support contracts are recognized ratably, on a straight-line basis over the term of the related contract and revenues from professional services consist mostly of time and material services and accordingly, are recognized as the services are performed.
	Professional service is not considered to be essential to the functionality of the software.
	The Company generally does not grant a right of return to its customers.
	The Company’s software license, maintenance and professional services sold through distributors are non-exchangeable, non-refundable, non-returnable and without any rights of price protection. Accordingly, the Company considers distributors as end-users.
	In transactions where a customer’s contractual terms include a provision for customer acceptance, revenues are recognized when such acceptance has been obtained or when the acceptance provision has lapsed.
	Deferred revenue includes unearned amounts received under maintenance and support contracts, professional services and amounts received from customers for licenses but not recognized as revenues due to the fact that these transactions did not meet the revenue recognition criteria, as of the balance sheet date.
		m.	Research and development costs:
	Research and development costs are charged to the statements of comprehensive income as incurred. ASC 985-20, “Software- Costs of Software to Be Sold, Leased, or Marketed”, requires capitalization of certain software development costs subsequent to the establishment of technological feasibility.
	Based on the Company’s product development process, technological feasibility is established upon completion of a working model. Costs incurred by the Company between completion of the working models and the point at which the products are ready for general release, have been insignificant. Therefore, all research and development costs are expensed as incurred.
		n.	Marketing expenses:
	Marketing expenses consist primarily of marketing campaigns and tradeshows. Marketing expenses are charged to the statement of comprehensive income, as incurred. Marketing expenses for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), amounted to $3,723, $5,155, $5,896, $1,258 (unaudited) and $1,258 (unaudited), respectively.
		o.	Share-based compensation:
	The Company accounts for share-based compensation in accordance with ASC 718, “Compensation - Stock Compensation” (“ASC No. 718”). ASC No. 718 requires companies to estimate the fair value of equity-based payment awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as an expense over the requisite service periods in the Company’s consolidated statements of comprehensive income.
	The Company recognizes compensation expenses for the value of its awards granted based on the straight-line method over the requisite service period of each of the awards, net of estimated forfeitures. ASC No. 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
	The Company has selected the Black-Scholes option-pricing model as the most appropriate fair value method for its option awards. The option-pricing model requires a number of assumptions, of which the most significant are the expected share price, volatility and the expected option term.
	The fair value of ordinary share underlying the options has historically been determined by management and approved by the Company’s board of directors. Because there has been no public market for the Company’s ordinary shares, management has determined fair value of an ordinary share at the time of grant of the option by considering a number of objective and subjective factors including financing investment rounds, operating and financial performance, the lack of liquidity of share capital and general and industry specific economic outlook, amongst other factors. The Company’s management determined the fair value of ordinary shares based on valuations performed using the Option Pricing Method (“OPM”) for the years ended December 31, 2012 and 2013 and for the period from January 1, 2014 and up to September 24, 2014. After September 24, 2014, the ordinary shares are publicly traded.
	p.	Income taxes:
The Company accounts for income taxes in accordance with ASC No. 740, “Income Taxes”. This codification prescribes the use of the asset and liability method whereby deferred tax asset and liability account balances are determined based on differences between financial reporting and tax bases of assets and liabilities and for carry-forward tax losses. Deferred taxes are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The Company provides a valuation allowance, if necessary, to reduce deferred tax assets to their estimated realizable value if it is more likely than not that some portion or all of the deferred tax asset will not be realized.
Deferred tax liabilities and assets are classified as current or non-current based on the classification of the related asset or liability for financial reporting, or according to the expected reversal dates of the specific temporary differences, if not related to an asset or liability for financial reporting.
The Company accounts for uncertain tax positions in accordance with the provisions of ASC 740, “Income Taxes”. Accounting guidance addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the consolidated financial statements, under which a company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position.
The tax benefits recognized in the consolidated financial statements from such a position should be measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. Accordingly, the Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in tax expense.
	q.	Basic and diluted net income per share:
The Company applies the two class method as required by ASC No. 260-10, “Earnings Per Share” (“ASC No. 260-10”). ASC 260-10 requires the income per share for each class of shares (ordinary and preferred shares) to be calculated assuming 100% of the Company’s earnings are distributed as dividends to each class of shares based on their contractual rights. No dividends were declared or paid during the reported periods.
Basic and diluted net income per share is computed based on the weighted-average number of shares of ordinary shares outstanding during each year. Diluted income per share is computed based on the weighted average number of ordinary shares outstanding during the period, plus dilutive potential shares considered outstanding during the period, in accordance with ASC 260-10. The total weighted average number of shares related to outstanding options, warrants and preferred shares that have been excluded from the calculations of diluted net earnings per share was 2,016,995, 17,062,890, 437,176, 21,542,985 (unaudited) and 71,475 (unaudited) for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), respectively.
	r.	Comprehensive income (loss):
The Company accounts for comprehensive income (loss) in accordance with Accounting Standards Codification No. 220, “Comprehensive Income” (“ASC No. 220”). This statement establishes standards for the reporting and display of comprehensive income (loss) and its components in a full set of general purpose financial statements. Comprehensive income (loss) generally represents all changes in shareholders’ equity during the period except those resulting from investments by, or distributions to shareholders.
	s.	Concentration of credit risks:
Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, short-term bank deposits and trade receivables.
The majority of the Company’s cash and cash equivalents and short-term bank deposits are invested with major bank in Israel and the United States. Such investments in the United States may be in excess of insured limits and are not insured in other jurisdictions. Generally, these investments may be redeemed upon demand and, therefore, bear minimal risk.
The trade receivables of the Company are mainly derived from sales to customers located primarily in the United States, Europe and Asia. The Company performs ongoing credit evaluations of its customers and to date has not experienced any significant losses.
	t.	Fair value of financial instruments:
The estimated fair value of financial instruments has been determined by the Company using available market information and valuation methodologies. Considerable judgment is required in estimating fair values. Accordingly, the estimates may not be indicative of the amounts the Company could realize in a current market exchange.
The following methods and assumptions were used by the Company in estimating the fair value of their financial instruments:
The carrying values of cash and cash equivalents, short-term bank deposits, trade receivables, prepaid expenses and other current assets, trade payables, employees and payroll accruals and accrued expenses and other current liabilities approximate fair values due to the short-term maturities of these instruments.
The Company applies ASC No. 820, “Fair Value Measurements and Disclosures” (“ASC No. 820”), with respect to fair value measurements of all financial assets and liabilities.
The fair value of foreign currency contracts (used for hedging purposes) is estimated by obtaining current quotes from banks and third party valuations.
Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer 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 1 -		Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.
Level 2 -		Include other inputs that are directly or indirectly observable in the marketplace.
Level 3 -		Unobservable inputs which are supported by little or no market activity.
The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.
In accordance with ASC 820, the Company measures its foreign currency derivative contracts, at fair value using the market approach valuation technique. Foreign currency derivative contracts as detailed in note 2.i are classified within Level 2 value hierarchy, as the valuation inputs are based on quoted prices and market observable data of similar instruments. Warrants to purchase preferred shares as detailed in note 2.u are classified within Level 3 value hierarchy, which is determined using a valuation model completed by a third party valuation firm.
	u.	Warrants to purchase preferred shares:
The Company accounted for freestanding warrants to purchase shares of its preferred shares as a liability on its consolidated balance sheet at fair value. The warrants to purchase preferred shares were recorded as a liability as the underlying preferred shares were contingently redeemable (upon a deemed liquidation event) and, therefore, could have obligated the Company to transfer assets in the future. The warrants were subject to re-measurement to fair value at each balance sheet date and any change in fair value was recognized as a component of financial income (expense), net, on the consolidated statements of comprehensive income. During the year ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited), the Company recorded financial expenses from change in the warrants’ fair value in the amount of $176, $1,446, $4,309 and $1,396 (unaudited), respectively.
Upon the IPO, the warrants were exercised for Series B3 preferred shares which were later converted into ordinary shares. See also note 7.c.2. The Company re-measured the warrants as of the conversion date using the intrinsic value based on the IPO price.
The following assumptions were used to estimate the value of the Series B3 preferred shares warrants as of December 31, 2012, 2013 and the three months ended March 31, 2014 (unaudited):
		Year ended						Three months ended
		December 31,						March 31,
		2012			2013			2014
								Unaudited
Expected volatility			45	%		45	%		45	%
Expected dividends			0			0			0
Expected term (in years)			2.5			2			0.75
Risk free rate			0.32	%		0.31	%		0.1	%
	v.	The impact of recently issued accounting standards still not effective for the Company as of December 31, 2014 is as follows:
In May 2014, the FASB issued an accounting standard update on revenue from contracts with customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The new guidance will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. On April 1, 2015, the FASB proposed deferring the effective date by one year to December 15, 2017 for annual reporting periods beginning after that date. The FASB also proposed permitting early adoption of the standard, but not before the original effective date of December 15, 2016. The Company is currently evaluating the effect that the new guidance will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

PREPAID_EXPENSES_AND_OTHER_CUR

PREPAID EXPENSES AND OTHER CURRENT ASSETS	3 Months Ended
	Mar. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
PREPAID EXPENSES AND OTHER CURRENT ASSETS	NOTE 3:	PREPAID EXPENSES AND OTHER CURRENT ASSETS
			December 31,				March 31,
			2013		2014		2015
							Unaudited
	Government authorities		$	34	$	18	$	6
	Hedging transaction assets			225		—		326
	Prepaid expenses			1,466		1,793		2,398
	Other current assets			358		267		268
			$	2,083	$	2,078	$	2,998

PROPERTY_AND_EQUIPMENT

PROPERTY AND EQUIPMENT	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT	NOTE 4:	PROPERTY AND EQUIPMENT
	The composition of property and equipment is as follows:
			December 31,				March 31,
			2013		2014		2015
							Unaudited
	Cost:
	Computers and related equipment		$	2,040	$	2,293	$	2,360
	Leasehold improvements			575		557		709
	Office furniture and equipment			406		687		811
	Trade show equipment			60		—		—
				3,081		3,537		3,880
	Less accumulated depreciation			1,809		1,389		1,559
	Depreciated cost		$	1,272	$	2,148	$	2,321
	Depreciation expense amounted to $329, $475, $746, $227 (unaudited) and 222 (unaudited) for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), respectively.

ACCRUED_EXPENSES_AND_OTHER_CUR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	NOTE 5:	ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
			December 31,				March 31,
			2013		2014		2015
							Unaudited
	Government authorities		$	3,603	$	5,015	$	3,803
	Accrued expenses			642		1,186		1,573
	Uncertain tax position			272		322		363
	Hedging transaction liabilities			—		419		401
			$	4,517	$	6,942	$	6,140

COMMITMENTS_AND_CONTINGENT_LIA

COMMITMENTS AND CONTINGENT LIABILITIES	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENT LIABILITIES	NOTE 6:	COMMITMENTS AND CONTINGENT LIABILITIES
		a.	Lease commitments:
	The Company and its subsidiaries rent their facilities under various operating lease agreements, which expire through 2022. In addition, the Company leases certain motor vehicles under certain car operating lease agreement which expire through 2017. The minimum rental payments under operating leases as of December 31, 2014, are as follows:
			Rental of		Lease of
			premises		motor vehicles
	2015		$	2,121	$	180
	2016			1,819		103
	2017			603		33
	2018			614		—
	2019 and thereafter			2,089		—
			$	7,246	$	316
	Total rent expenses for the years ended December 31, 2012, 2013 and 2014 were approximately $897, $1,303 and $2,309, respectively.
	Total motor vehicle lease expenses for the years ended December 31, 2012, 2013 and 2014 were approximately $305, $386 and $369, respectively.
		b.	Pledges and Bank guarantees:
	The Company pledged a bank deposit in the amount of $839 in respect of an office lease agreement and hedging transactions, this amount is presented as part of short-term bank deposits and other long-term assets.
	The Company obtained a bank guarantee in the amount of $222, in connection with an office lease agreement.
		c.	Legal contingencies:
	The Company is not currently a party, as plaintiff or defendant, to any legal proceedings that, individually or in the aggregate are expected by the Company to have a material effect on its consolidated financial statements. The Company reviews the status of each matter and assesses its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount can be reasonably estimated, the Company accrues a liability for the estimated loss. These accruals are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular matter.

SHAREHOLDERS_EQUITY

SHAREHOLDERS' EQUITY	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
SHAREHOLDERS' EQUITY	NOTE 7:	SHAREHOLDERS’ EQUITY
		a.	Composition of shares capital of the Company:
			December 31, 2013						December 31, 2014				31-Mar-15
			Authorized			Issued and			Authorized		Issued and		Authorized		Issued and
						outstanding					outstanding				outstanding
			Number of shares										Number of shares
													Unaudited
	Ordinary shares of NIS 0.01 par value each			31,785,000			7,019,352			250,000,000		30,501,352		250,000,000		30,757,908
	Series A preferred shares			378,000			378,000			—		—		—		—
	Series A1 preferred shares			1,637,000			1,185,190			—		—		—		—
	Series B preferred shares			9,000,000			8,515,390			—		—		—		—
	Series B1 preferred shares			2,600,000			2,575,650			—		—		—		—
	Series B2 preferred shares			4,000,000			3,206,620			—		—		—		—
	Series B3 preferred shares			600,000			97,440			—		—		—		—
				50,000,000			22,977,642			250,000,000		30,501,352		250,000,000		30,757,908
		b.	Initial Public Offering
	In September 2014, the Company completed an IPO in which the Company issued and sold 5,360,000 ordinary shares at a public offering price of $16.00 per share.
	As part of the IPO the underwriters received an option to purchase 804,000 ordinary shares of the Company at the price of $16.00 for a period of one month following the IPO date. The total value of the underwriters options based on the Black-Scholes-Merton option pricing model amounted to $592 which was included in the additional paid-in capital balance and as IPO offering expenses.
	During September 2014, the underwriters fully exercised their option.
	The total net proceeds received from the IPO were $88,468 after deducting underwriting discounts and commissions of $6,904 and other offering expenses of $3,846.
		c.	1.     Ordinary shares:
	The ordinary shares of the Company confer upon the holders the right to receive notices of and to participate and vote in general meetings of the Company, rights to receive dividends and rights to participate in distribution of assets upon liquidation after all the preferred shares received their preference amount in full as detailed below.
		2	Preferred shares:
	Following the Company’s IPO, as described in note 7.b, all of the Company preferred shares were automatically converted into ordinary shares based on a conversion ratio detailed in the Company’s Articles of Association, as follows:
			Conversion Ratio
	Series A preferred Shares			1.094
	Series A1 preferred Shares			1.485
	Series B preferred Shares			1
	Series B1 preferred Shares(*)			1
	Series B2 preferred Shares			1
	Series B3 preferred Shares			1
	(*)	with respect only to the Series B1 preferred shares, serial numbers 226,503 to 257,565 (inclusive), the Conversion Price was 1.543, which results in a Conversion Ratio of 1.001451717.
		3	In June, 2012, there was a ten-for-one share split by means of a share dividend of nine shares for each share then outstanding. For accounting purposes, this transaction was recorded as a share split and accordingly, all shares, options, warrants and earnings per share amounts have been adjusted retroactively for all periods presented in these consolidated financial statements.
		d.	Share based compensation:
	Under the Company’s 2001 equity incentive plan, as amended March 5, 2003, and its 2011 and 2014 equity incentive plans (collectively, the “Plans”), options and Restricted Share Units (“RSUs”) may be granted to employees, officers, non-employees consultants and directors of the Company and its Subsidiaries.
	Under the Plans, as of December 31, 2014 and March 31, 2015 (unaudited), an aggregate of 184,261 and 763,033 (unaudited) shares, respectively, were still available for future grant. Each option granted under the Plans expires no later than 10 years from the date of grant. The vesting period of the options is generally four years, unless the Board of Directors or the Board’s Compensation Committee determines otherwise. Any option which is forfeited or cancelled before expiration becomes available for future grants.
	The total share-based compensation expense related to all of the Company’s equity-based awards, recognized for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), was comprised as follows:
			Year ended								Three months ended
			December 31,								March 31,
			2012			2013			2014		2014		2015
											Unaudited
	Cost of revenues		$	32		$	39		$	137	$	20	$	63
	Research and development			58			73			172		30		82
	Sales and marketing			81			126			347		42		139
	General and administrative			113			165			917		64		181
	Total share-based compensation expense		$	284		$	403		$	1,573	$	156	$	465
	The total unrecognized compensation cost amounted to $4,273 and $5,012 (unaudited) as of December 31, 2014 and March 31, 2015 (unaudited), respectively, and is expected to be recognized over a weighted average period of 2.92 years and 2.98 years (unaudited), respectively.
	In August 2013, the Company donated 15,000 warrants for ordinary shares with an exercise price of $2.21 to “Tmura”, a non-profit organization. The Company recorded compensation expenses related to these warrants in the amount of $19 in 2013. In March 2015, the warrants were exercised for ordinary shares.
		e.	Options granted to employees:
	A summary of the activity in options granted to employees for the year ended December 31, 2014 and the three months ended March 31, 2015 (unaudited) is as follows:
			Amount			Weighted			Weighted		Aggregate
			of			average			average		intrinsic value
			options			exercise			remaining
						price			contractual
									term
									(in years)
	Balance as of December 31, 2013			4,542,466		$	1.41			6.67	$	22,970
	Granted			386,700		$	15.56
	Exercised			(255,562	)	$	0.74
	Forfeited			(108,840	)	$	4.57
	Balance as of December 31, 2014			4,564,764		$	2.57			5.96	$	169,410
	Granted			25,000		$	58.86
	Exercised			(242,257	)	$	0.96
	Forfeited			(8,825	)	$	30.29
Balance as of March 31, 2015			4,338,682		$	2.93			5.87	$	228,462
Exercisable as of December 31, 2014			3,458,332		$	1.13			5.12	$	133,218
Vested and expected to vest as of December 31, 2014			4,535,633		$	2.55			5.94	$	168,422
Exercisable as of March 31, 2015 (unaudited)			3,367,653		$	1.34			5.14	$	182,635
Vested and expected to vest as of March 31, 2015 (unaudited)			4,313,084		$	2.9			5.18	$	227,137
The computation of expected volatility is based on actual historical share price volatility of comparable companies. The expected option term represents the period of time that options granted are expected to be outstanding. For stock-option awards which were at the money when granted (plain vanilla stock-options), it is determined based on the simplified method in accordance with SAB No. 110, as adequate historical experience is not available to provide a reasonable estimate. The simplified method will continue to apply until enough historical experience is available to provide a reasonable estimate of the expected term. For stock-option awards which were in the money when granted, a binomial model was used to determine the expected term as an input to the Black-Scholes-Merton option pricing model. The Company has historically not paid dividends and has no foreseeable plans to pay dividends and, therefore, uses an expected dividend yield of zero in the option pricing model. The risk-free interest rate is based on the yield of U.S. treasury bonds with equivalent terms.
The following table set forth the parameters used in computation of the options compensation to employees for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited):
		Year ended					Three months
		December 31,					ended March 31,
		2012		2013	2014		2014	2015
							Unaudited
Expected volatility		40%-45%		45%	45%		45%	45%
Expected dividends		0		0	0		0	0
Expected term (in years)		5.28-6.11		6.11	5.81-6.11		6.06	6.03
Risk free rate		0.61%-2.64%		1.15%-2.64%	1.55%-2.02%		1.81%	1.37%
A summary of options data for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), is as follows:
		Year ended								Three months
		December 31,								ended March 31,
		2012			2013			2014		2014		2015
										Unaudited
Weighted-average grant date fair value of options granted		$	0.61		$	2.03		$	6.95	$	4	$	58.86
Total intrinsic value of the options exercised		$	221		$	1,858		$	9,943	$	1,061	$	12,460
Total fair value of options vested		$	219		$	340		$	925	$	135	$	372
The aggregate intrinsic value is calculated as the difference between the per-share exercise price and the deemed fair value of an ordinary share for each share subject to an option multiplied by the number of shares subject to options at the date of exercise. The fair value of the Company’s ordinary shares was $39.65 and $55.57 (unaudited) per share as of December 31, 2014 and March 31, 2015 (unaudited), respectively.
The following tables summarize information about the Company’s outstanding and exercisable options granted to employees as of December 31, 2014 and as of March 31, 2015 (unaudited):
Exercise price		Options			Weighted			Options		Weighted
		outstanding			average			exercisable		average
		as of			remaining			as of		remaining
		December 31,			contractual			December 31,		contractual
		2014			term			2014		term
					(years)					(years)
$0.20			309,250			5.37			309,250		5.37
$0.41			1,581,890			3.04			1,581,890		3.04
$1.06			379,700			6.43			356,853		6.41
$1.46			1,080,623			7.39			809,290		7.39
$1.78			345,700			6.78			204,233		5.93
$2.21			123,551			8.42			51,744		8.42
$6.47			365,250			8.97			95,160		8.97
$8.84			50,000			9.09			31,250		9.09
$9.93			70,400			9.32			—		—
$14.00			224,000			9.7			18,662		9.7
$44.37			34,400			9.88			—		—
			4,564,764			5.96			3,458,332		5.12
Exercise price		Options			Weighted			Options		Weighted
		outstanding			average			exercisable		average
		as of			remaining			as of		remaining
		March 31,			contractual			March 31,		contractual
		2015			term			2015		term
					(years)					(years)
$0.20			279,890			5.31			279,890		5.31
$0.41			1,477,147			2.8			1,477,147		2.8
$1.06			351,306			6.15			340,133		6.14
$1.46			1,064,868			7.14			846,155		7.14
$1.78			287,420			7.77			163,587		7.76
$2.21			118,751			8.17			57,191		8.17
$6.47			362,250			8.72			115,007		8.72
$8.84			50,000			8.84			32,812		8.84
$9.93			68,775			9.07			15,775		9.07
$14.00			224,000			9.46			37,331		9.46
$44.37			30,775			9.63			2,625		9.63
$58.86			23,500			9.89			—		—
			4,338,682			5.87			3,367,653		5.14
	f.	A summary of RSU activity for the year ended December 31, 2014 and the three months ended March 31, 2015 (unaudited), is as follows:
		Amount			Weighted
		of			average
		options			grant date fair
					value
Unvested as of December 31, 2013			—			—
Granted			29,200		$	44.37
Forfeited			(1,240	)	$	44.37
Unvested as of December 31, 2014			27,960		$	44.37
Granted			18,400		$	58.86
Forfeited			(3,320	)	$	49,61
Unvested as of March 31, 2015			43,040		$	50.16

INCOME_TAXES

INCOME TAXES	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
INCOME TAXES	NOTE 8:	INCOME TAXES
	The Company’s subsidiaries are separately taxed under the domestic tax laws of the jurisdiction of incorporation of each entity.
		a.	Corporate tax in Israel:
	In July 2009, the Israeli Parliament, known as the Knesset, passed the Law for Economic Efficiency (Amended Legislation for Implementing the Economic Plan for 2009 and 2010), 2009, which prescribed, among others, a gradual reduction in the rates of the Israeli corporate tax and real capital gains tax starting 2011. The tax rate in effect for 2011 was 24%.
	The Law for Change in the Tax Burden (Legislative Amendments) (Taxes), 5772-2011, (the “Tax Burden Law 2011”), was published by the Government of Israel. The Tax Burden Law 2011 cancelled the scheduled progressive reduction of the corporate tax rate that was approved in 2009 and instead set the corporate tax rate at 25% from 2012 and thereafter.
	On July 30, 2013, the Knesset approved the second and third readings of the Economic Plan for 2013-2014 (“Amended Budget Law”) which consists, among others, of fiscal changes whose main aim is to enhance long-term collection of taxes.
	These changes include, among others, raising the Israeli corporate tax rate from 25% to 26.5%, cancelling the lowering of the tax rates applicable to preferred enterprises (9% in development area A and 16% in other areas), taxing revaluation gains and increasing the tax rates on dividends within the scope of the Law for the Encouragement of Capital Investments to 20% effective from January 1, 2014.
		b.	Income before taxes on income is comprised as follows:
			Year ended December 31,
			2012			2013			2014
	Domestic		$	6,267		$	6,304		$	13,194
	Foreign			1,370			1,651			1,272
			$	7,637		$	7,955		$	14,466
		c.	Deferred income taxes:
	Deferred taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts recorded for tax purposes. Significant components of the Company’s deferred tax assets and liabilities are as follows:
			Year ended
			December 31,
			2013			2014
	Deferred tax assets:
	Net operating loss carry-forwards		$	697		$	50
	Capital losses carry-forwards			55			52
	Research and development expenses			1,498			2,116
	Deferred revenues			1,558			1,824
	Issuance expenses			—			1,083
	Other			541			904
	Deferred tax assets before valuation allowance			4,349			6,029
	Valuation allowance			195			52
	Deferred tax asset		$	4,154		$	5,977
	Deferred tax liabilities:
	Property and equipment depreciation and other		$	56		$	176
	Deferred tax liabilities		$	56		$	176
	The Company has provided valuation allowances in respect of certain deferred tax assets resulting from capital loss carry-forwards due to uncertainty concerning realization of these deferred tax assets. In addition, a deferred tax liability has been established primarily to reflect the Company’s depreciation of assets for tax purposes which differs from depreciation recorded in the consolidated financial statements.
		d.	Income taxes are comprised as follows:
			Year ended
			December 31,
			2012			2013			2014
	Current		$	233		$	2,089		$	4,467
	Deferred			(458	)		(769	)		45
			$	(225	)	$	1,320		$	4,512
			Year ended
			December 31,
			2012			2013			2014
	Domestic		$	(729	)	$	1,096		$	2,485
	Foreign			504			224			2,027
			$	(225	)	$	1,320		$	4,512
		e.	A reconciliation of the Company’s theoretical income tax expense to actual income tax expense as follows:
			Year ended
			December 31,
			2012			2013			2014
	Income before income taxes		$	7,637		$	7,955		$	14,466
	Statutory tax rate			25	%		25	%		26.5	%
	Theoretical income tax expense			1,909			1,989			3,833
	Utilization of tax losses and deferred taxes for which valuation allowance was provided, net			2			4			(143	)
	Deferred taxes on losses for which valuation allowance was provided, net			(457	)		(91	)		834
	Non-deductible expenses			23			251			1,165
	Increase in other uncertain tax positions—net						175			19
	Tax adjustment in respect of different tax rate			(1,737	)		(979	)		(838	)
	Other			35			(29	)		(358	)
	Income tax expense (benefit)		$	(225	)	$	1,320		$	4,512
		f.	Net operating loss carry-forwards
	As of December 31, 2014, the Company had capital tax losses totaling approximately $197, which were attributed to Israel and can be carried forward indefinitely.
		g.	Tax benefits under the Law for the Encouragement of Capital Investments, 1959:
	The Company has been granted “Approved Enterprise” Status, under the above Law. The Company has elected the alternative benefits program, waiver of grants in return for tax exemptions. Pursuant thereto, the income of the Company derived from the “Approved Enterprise” program is tax-exempt for two years and will enjoy a reduced tax rate of 10%-25% for up to a total of eight years (subject to an adjustment based upon the foreign investors’ ownership of the Company).
	The period of tax benefits detailed above is subject to limits of 12 years from the year of commencement of production, or 14 years from granting of approval, whichever is earlier.
The tax-exempt income attributable to the “Approved Enterprise” can be distributed to shareholders, without subjecting the Company to taxes, only upon the complete liquidation of the Company. If these retained tax-exempt profits are distributed, they would be taxed at the corporate tax rate applicable to such profits as if the Company had not elected the alternative tax benefits program (currently between 10% to 25% for an “Approved Enterprise”).
Entitlement to the above benefits is conditional upon the Company fulfilling the conditions stipulated by the above law, regulations published thereunder and the letters of approval for the specific investments in “approved enterprises”. In the event of failure to comply with these conditions, the benefits may be canceled and the Company may be required to refund the amount of the benefits, in whole or in part, including interest and CPI linkage.
Income not eligible for “approved enterprise” benefits mentioned above is taxed at the regular rate.
On April 1, 2005, an amendment to the Investment Law came into effect (“the Amendment”) and has significantly changed the provisions of the Investment Law. The Amendment limits the scope of enterprises which may be approved by the Investment Center by setting criteria for the approval of a facility as an Approved Enterprise, such as provisions generally requiring that at least 25% of the Approved Enterprise’s income will be derived from export. Additionally, the Amendment enacted major changes in the manner in which tax benefits are awarded under the Investment Law so that companies no longer require Investment Center approval in order to qualify for tax benefits.
However, the Investment Law provides that terms and benefits included in any letter of approval already granted will remain subject to the provisions of the law as they were on the date of such approval. Therefore, the Company’s existing Approved Enterprise will generally not be subject to the provisions of the Amendment.
Such an enterprise is a “Beneficiary Enterprise”, rather than the previous terminology of Approved Enterprise. The period of tax benefits for a new Beneficiary Enterprise commences in the “Year of Commencement”. This year is the later of: (1) the year in which taxable income is first generated by the company, or (2) the Year of Election.
The Company has elected the status of a Beneficiary Enterprise for the year ended in 2006 and 2008.
As of December 31, 2014, approximately $13,080 was derived from tax exempt profits earned by the Company’s “Approved Enterprises” and “Beneficiary Enterprise”. The Company and its Board of Directors have determined that such tax-exempt income will not be distributed as dividends and intends to reinvest the amount of its tax exempt income earned by the Company. Accordingly, no provision for deferred income taxes has been provided on income attributable to the Company’s “Approved Enterprises” and “Beneficiary Enterprise” as such income is essentially permanently reinvested.
If the Company’s retained tax-exempt income is distributed, the income would be taxed at the applicable corporate tax rate as if it had not elected the alternative tax benefits under the Investment Law and an income tax liability of approximately $3,210 would have been incurred as of December 31, 2014.
On December 29, 2010, the Knesset approved an additional amendment to the Law for the Encouragement of Capital Investments, 1959. According to the amendment, a reduced uniform corporate tax rate for exporting industrial enterprises (over 25%) was established. The reduced tax rate will not be program dependent and will apply to the industrial enterprise’s entire income. The tax rates for industrial enterprises have been reduced gradually over a period of five years as follows: - In 2011-2012, the reduced tax rate for development area A will be 10% and for the rest of the country - 15%. In 2013 - 2014, the reduced tax rate for development area A will be 7% and for the rest of the country - 12.5%. Starting 2015 and thereafter, the reduced tax rate for development area A will be 6% and for the rest of the country - 12%. See also note 8.a to additional amendment to the Law related to tax rate.
On March 2013, the Company notified the Israeli Tax Authorities that it had transferred from Beneficiary Enterprise status to Preferred Enterprise status.
	h.	Tax benefits under the Law for the Encouragement of Industry (Taxation), 1969:
Management believes that the Company currently qualifies as an “industrial company” under the above law and as such, is entitled to certain tax benefits including accelerated depreciation, deduction of public offering expenses in three equal annual installments and amortization of other intangible property rights for tax purposes.
	i.	Tax assessments:
The Company’s tax years until December 31, 2010 are subject to statutes of limitation as of December 31, 2014. In addition, the Company is currently under examination by the Israeli Tax Authorities for the year ended December 31, 2011. The U.K. Subsidiary’s tax years until December 31, 2010 are subject to statutes of limitation as of December 31, 2014. The German Subsidiary’s tax years since inception are subject to examination as none of the tax years are subject to statutes of limitation as of December 31, 2014. The U.S. Subsidiary’s tax years ended December 31, 2000, 2001, 2007, 2009 and 2010 are subject to statutes of limitation as of December 31, 2014.
	j.	Uncertain tax positions:
A reconciliation of the opening and closing amounts of total unrecognized tax benefits is as follows:
		Year ended
		December 31,
		2013			2014
Opening balance		$	97		$	272
Increases (decrease) related to prior year tax positions			10			(5	)
Increases related to current year tax positions			165			55
Closing balance		$	272		$	322
The balance of total unrecognized tax benefits at December 31, 2014, is $322 that, if potentially recognized, would affect the effective rate in the Company’s statement of comprehensive income.

FINANCIAL_INCOME_EXPENSES_NET

FINANCIAL INCOME (EXPENSES), NET	3 Months Ended
	Mar. 31, 2015
Other Income and Expenses [Abstract]
FINANCIAL INCOME (EXPENSES), NET	NOTE 9:	FINANCIAL INCOME (EXPENSES), NET
			Year ended									Three months ended
			December 31,									March 31,
			2012			2013			2014			2014			2015
												Unaudited
	Bank charges		$	(47	)	$	(62	)	$	(63	)	$	(12	)	$	(16	)
	Changes in fair value of warrants to purchase preferred shares			(176	)		(1,446	)		(4,309	)		(1,396	)		—
	Exchange rate gain (loss), net			121			307			(1,817	)		37			(1,689	)
	Total expenses			(102	)		(1,201	)		(6,189	)		(1,371	)		(1,705	)
	Interest income			106			77			201			15			74
	Total financial income (expenses), net		$	4		$	(1,124	)	$	(5,988	)	$	(1,356	)	$	(1,631	)

BASIC_AND_DILUTED_NET_INCOME_P

BASIC AND DILUTED NET INCOME PER SHARE	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
BASIC AND DILUTED NET INCOME PER SHARE	NOTE 10:	BASIC AND DILUTED NET INCOME PER SHARE
			Year ended									Three months ended
			December 31,									March 31,
			2012			2013			2014			2014			2015
												Unaudited
	Numerator:
	Net income		$	7,862		$	6,635		$	9,954		$	(1,248	)	$	4,166
	Dividends accumulated for the period			(4,530	)		(4,879	)		(3,815	)		(1,262	)		—
	Net income available to shareholders of ordinary shares		$	3,332		$	1,756		$	6,139		$	(2,510	)	$	4,166
	Denominator:
	Shares used in computing net income per ordinary shares, basic			6,592,997			6,900,433			13,335,059			7,073,239			30,563,888
			Year ended									Three months ended
			December 31,									March 31,
			2012			2013			2014			2014			2015
												Unaudited
	Numerator:
	Net income		$	7,862		$	6,635		$	9,954		$	(1,248	)	$	4,166
	Dividends accumulated for the period			—			(4,879	)		—			(1,262	)		—
	Net income available to shareholders of ordinary shares		$	7,862		$	1,756		$	9,954		$	(2,510	)	$	4,166
	Denominator:
	Shares used in computing net income per ordinary shares, diluted			25,245,790			10,765,914			29,704,730			7,073,239			34,786,581

SEGMENTS_CUSTOMERS_AND_GEOGRAP

SEGMENTS, CUSTOMERS AND GEOGRAPHIC INFORMATION	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
SEGMENTS, CUSTOMERS AND GEOGRAPHIC INFORMATION	NOTE 11:	SEGMENTS, CUSTOMERS AND GEOGRAPHIC INFORMATION
		a.	The Company applies ASC topic 280, “Segment Reporting” (“ASC No. 280”). The Company operates in one reportable segment. Total revenues are attributed to geographic areas based on the location of the end customer.
		b.	The following tables present total revenues for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 and 2015 and long-lived assets as of December 31, 2013 and 2014 and as of March 31, 2015:
	Revenues:
			Year ended						Three months ended
			December 31,						March 31,
			2012		2013		2014		2014		2015
									Unaudited
	United States		$	26,178	$	32,041	$	60,761	$	10,300	$	16,434
	Israel			2,999		3,383		4,234		881		1,038
	United Kingdom			2,627		6,862		12,220		713		3,554
	EMEA (*)			8,522		15,551		16,744		3,445		7,753
	Other			6,882		8,320		9,040		2,056		4,136
			$	47,208	$	66,157	$	102,999	$	17,395	$	32,915
	long-lived assets:
			December 31,				March 31,
			2013		2014		2015
							Unaudited
	United States		$	184	$	606	$	631
	Israel			939		1,336		1,465
	United Kingdom			144		143		160
	EMEA (*)			5		15		17
	Other			—		48		48
			$	1,272	$	2,148	$	2,321
	(*)	Europe, the Middle East and Africa excluding United Kingdom and Israel

SIGNIFICANT_ACCOUNTING_POLICIE1

SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Use of estimates		a.	Use of estimates:
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The Company evaluates on an ongoing basis its assumptions, including those related to contingencies, income taxes, deferred taxes and liabilities, share-based compensation cost, as well as in estimates used in applying the revenue recognition policy. The Company’s management believes that the estimates, judgment and assumptions used are reasonable based upon information available at the time they are made. These estimates, judgments and assumptions can affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.
Principles of consolidation		b.	Principles of consolidation:
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. Intercompany transactions and balances, have been eliminated upon consolidation.
Unaudited interim financial information		c.	Unaudited interim financial information:
	The accompanying consolidated balance sheet as of March 31, 2014 and 2015, the consolidated statements of operations and comprehensive income (loss) and cash flows for the three months ended March 31, 2014 and 2015 and the shareholders’ equity for the three months ended March 31, 2015 are unaudited. The unaudited interim financial statements have been prepared on the same basis as the annual consolidated statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s financial position and results of operations and cash flows for the three months ended March 31, 2014 and 2015. The financial data and the other information disclosed in these notes to the consolidated financial statements related to the three month periods are unaudited. The results of the three months ended March 31, 2015 are not necessarily indicative of the results to be expected for the fiscal year ending December 31, 2015 or for any other interim period or for any other future year.
Financial statements in U.S. dollars		d.	Financial statements in U.S. dollars:
	A majority of the Company’s revenues are generated in U.S. dollars. In addition, the equity investments were in U.S. dollars and substantial portion of the Company costs are incurred in U.S dollars. The Company’s management believes that the U.S. dollar is the currency of the primary economic environment in which the Company operates. Thus, the functional and reporting currency of the Company is the U.S dollar.
	Accordingly, monetary accounts maintained in currencies other than the U.S. dollar are re-measured into U.S. dollars in accordance with Statement of the Accounting Standard Codification (“ACS”) No. 830 “Foreign Currency Matters” (“ASC No. 830”). All transaction gains and losses of the re-measured monetary balance sheet items are reflected in the statement of comprehensive income as financial income or expenses, as appropriate.
	The functional currency of the U.S. Subsidiary is the U.S. dollar.
	The functional currency of the U.K. Subsidiary and Germany Subsidiary is the U.S. dollar as these subsidiaries’ revenues, intercompany transactions, budgets and financing are denominated in U.S. dollars.
Cash and cash equivalents		e.	Cash and cash equivalents:
	Cash equivalents are short-term highly liquid investments that are readily convertible to cash with original maturities of three months or less, at the date acquired.
Short-term bank deposits		f.	Short-term bank deposits:
	Short-term bank deposits are deposits with maturities of up to one year. As of December 31, 2013 and 2014 and March 31, 2015 (unaudited) the Company’s bank deposits were in U.S. dollars, Euros and New Israel Shekels (“NIS”) and bore interest at weighted average interest rates of 0.5%, 0.6% and 0.4%, respectively. Short-term bank deposits are presented at their cost, including accrued interest. A portion of these deposits is used as security for the rental of premises and as a security for the Company’s hedging activities.
Property and equipment		g.	Property and equipment:
	Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets at the following annual rates:
			%
	Computers and related equipment		25 - 33
	Office furniture and equipment		20-Jul
	Trade show equipment		33
	Leasehold improvements		Over the shorter of the related
			lease period or the life of the
			asset
Long-lived assets		h.	Long-lived assets:
	The long-lived assets of the Company and its subsidiaries are reviewed for impairment in accordance with ASC No. 360, “Property, Plant and Equipment” (“ASC No. 360”), whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the future undiscounted cash flows expected to be generated by the assets. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. During the years ended 2012, 2013 and 2014 and the three months ended March 31, 2015 (unaudited), no impairment losses have been identified.
Derivatives instruments	i.	Derivative instruments:
	ASC No. 815, “Derivative and Hedging”, requires companies to recognize all of their derivative instruments as either assets or liabilities in the statement of financial position at fair value.
	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.
	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 and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item, if any, is recognized in current earnings during the period of change.
	To hedge against the risk of overall changes in cash flows resulting from foreign currency salary payments during the year, the Company has instituted a foreign currency cash flow hedging program. The Company hedges portions of its forecasted expenses denominated in NIS. These forward and option contracts are designated as cash flow hedges, as defined by ASC 815, and are all effective, as their critical terms match underlying transactions being hedged.
	As of December 31, 2014 and March 31, 2015 (unaudited), the amount recorded in accumulated other comprehensive loss from the Company’s currency forward and option transactions was $333 (net of tax in the amount of $63) and $295 (net of tax in the amount of $56) (unaudited), respectively, and presented also as part of accrued expenses and other current liabilities or as prepaid and other current assets. Such amount will be recorded in the Company’s earnings during 2015 and 2016. At December 31, 2014 and March 31, 2015 (unaudited), the notional amounts of foreign exchange forward and options contracts into which the Company entered were $10,450 and $16,150 (unaudited), respectively. The foreign exchange forward and options contracts will expire by the end of February 2016.
Severance pay		j.	Severance pay:
	The Israeli Severance Pay Law, 1963 (“Severance Pay Law”), specifies that employees are entitled to severance payment, following the termination of their employment. Under the Severance Pay Law, the severance payment is calculated as one month salary for each year of employment, or a portion thereof.
	Part of the Company’s liability for severance pay is covered by the provisions of Section 14 of the Severance Pay Law (“Section 14”). Under Section 14 employees are entitled to monthly deposits, at a rate of 8.33% of their monthly salary, continued on their behalf to their insurance funds. Payments in accordance with Section 14 release the Company from any future severance payments in respect of those employees. As a result, the Company does not recognize any liability for severance pay due to these employees and the deposits under Section 14 are not recorded as an asset in the Company’s balance sheet.
	For the Company’s employees in Israel who are not subject to Section 14, the Company calculated the liability for severance pay pursuant to the Severance Pay Law based on the most recent salary of these employees multiplied by the number of years of employment as of the balance sheet date. The Company’s liability for these employees is fully provided for via monthly deposits with severance pay funds, insurance policies and an accrual. The value of these deposits is recorded as an asset on the Company’s balance sheet.
	Severance expense for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), amounted to $667, $1,057, $1,187, $292 (unaudited) and $531 (unaudited), respectively.
U.S. employees defined contribution plan		k.	U.S. employees defined contribution plan:
	The U.S. Subsidiary has a 401(K) defined contribution plan covering certain full time employees in the U.S. All eligible employees may elect to contribute up to an annual maximum, of lesser of 60% of their annual compensation to the plan through salary deferrals, subject to Internal Revenue Service limits but not greater than $17.5 per year (for certain employees over 50 years of age the maximum contribution is $23 per year).
	The U.S. Subsidiary matches amount equal to 100% of the first 3% of the employees Compensation that they contribute to the Plan and 50% of the next 2% of their Compensation that they contribute to the Plan with a limit of $9.8 a year. During the years ended December 31, 2012, 2013 and 2014 the U.S. Subsidiary recorded expenses for matching contributions in amounts of $237, $372 and $544, respectively.
Revenue recognition		l.	Revenue recognition:
	The Company generates revenues from licensing the rights to use its software products and from maintenance and professional services. The Company sell its products through its direct sales force and indirectly through resellers.
	The Company accounts for its software licensing sales in accordance with ASC 985-605, “Software Revenue Recognition”. ASC 985-605 generally requires revenue earned on software arrangements involving multiple elements to be allocated to each element based on the relative fair value of the elements when Vendor Specific Objective Evidence (“VSOE”) of fair value exists for all elements and to be allocated to the different elements in the arrangement under the “residual method” when VSOE of fair value exists for all undelivered elements and no VSOE exists for the delivered elements.
	Maintenance and professional services are sold separately and therefore the selling price (VSOE) is based on stand-alone transactions.
	Under the residual method, at the outset of the arrangement with the customer, the Company defers revenue for the fair value of its undelivered elements and recognizes revenue for the remainder of the arrangement fee attributable to the elements initially delivered in the arrangement (software element) when all other criteria in ASC 985-605 have been met. Any discount in the arrangement is allocated to the delivered element.
	Software license revenues are recognized when persuasive evidence of an arrangement exists, the software license has been delivered, there are no uncertainties surrounding product acceptance, there are no significant future performance obligations, the license fees are fixed or determinable and collection of the license fee is considered probable. Fees for arrangements with payment terms extending beyond customary payment terms are considered not to be fixed or determinable, in which case revenue is deferred and recognized when payments become due from the customer provided that all other revenue recognition criteria have been met.
	Revenues from maintenance and support contracts are recognized ratably, on a straight-line basis over the term of the related contract and revenues from professional services consist mostly of time and material services and accordingly, are recognized as the services are performed.
	Professional service is not considered to be essential to the functionality of the software.
	The Company generally does not grant a right of return to its customers.
	The Company’s software license, maintenance and professional services sold through distributors are non-exchangeable, non-refundable, non-returnable and without any rights of price protection. Accordingly, the Company considers distributors as end-users.
	In transactions where a customer’s contractual terms include a provision for customer acceptance, revenues are recognized when such acceptance has been obtained or when the acceptance provision has lapsed.
	Deferred revenue includes unearned amounts received under maintenance and support contracts, professional services and amounts received from customers for licenses but not recognized as revenues due to the fact that these transactions did not meet the revenue recognition criteria, as of the balance sheet date.
Research and development costs		m.	Research and development costs:
	Research and development costs are charged to the statements of comprehensive income as incurred. ASC 985-20, “Software- Costs of Software to Be Sold, Leased, or Marketed”, requires capitalization of certain software development costs subsequent to the establishment of technological feasibility.
	Based on the Company’s product development process, technological feasibility is established upon completion of a working model. Costs incurred by the Company between completion of the working models and the point at which the products are ready for general release, have been insignificant. Therefore, all research and development costs are expensed as incurred.
Marketing expenses	n.	Marketing expenses:
	Marketing expenses consist primarily of marketing campaigns and tradeshows. Marketing expenses are charged to the statement of comprehensive income, as incurred. Marketing expenses for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), amounted to $3,723, $5,155, $5,896, $1,258 (unaudited) and $1,258 (unaudited), respectively.
Share-based compensation		o.	Share-based compensation:
	The Company accounts for share-based compensation in accordance with ASC 718, “Compensation - Stock Compensation” (“ASC No. 718”). ASC No. 718 requires companies to estimate the fair value of equity-based payment awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as an expense over the requisite service periods in the Company’s consolidated statements of comprehensive income.
	The Company recognizes compensation expenses for the value of its awards granted based on the straight-line method over the requisite service period of each of the awards, net of estimated forfeitures. ASC No. 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
	The Company has selected the Black-Scholes option-pricing model as the most appropriate fair value method for its option awards. The option-pricing model requires a number of assumptions, of which the most significant are the expected share price, volatility and the expected option term.
	The fair value of ordinary share underlying the options has historically been determined by management and approved by the Company’s board of directors. Because there has been no public market for the Company’s ordinary shares, management has determined fair value of an ordinary share at the time of grant of the option by considering a number of objective and subjective factors including financing investment rounds, operating and financial performance, the lack of liquidity of share capital and general and industry specific economic outlook, amongst other factors. The Company’s management determined the fair value of ordinary shares based on valuations performed using the Option Pricing Method (“OPM”) for the years ended December 31, 2012 and 2013 and for the period from January 1, 2014 and up to September 24, 2014. After September 24, 2014, the ordinary shares are publicly traded.
Income taxes		p.	Income taxes:
	The Company accounts for income taxes in accordance with ASC No. 740, “Income Taxes”. This codification prescribes the use of the asset and liability method whereby deferred tax asset and liability account balances are determined based on differences between financial reporting and tax bases of assets and liabilities and for carry-forward tax losses. Deferred taxes are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The Company provides a valuation allowance, if necessary, to reduce deferred tax assets to their estimated realizable value if it is more likely than not that some portion or all of the deferred tax asset will not be realized.
	Deferred tax liabilities and assets are classified as current or non-current based on the classification of the related asset or liability for financial reporting, or according to the expected reversal dates of the specific temporary differences, if not related to an asset or liability for financial reporting.
	The Company accounts for uncertain tax positions in accordance with the provisions of ASC 740, “Income Taxes”. Accounting guidance addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the consolidated financial statements, under which a company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position.
	The tax benefits recognized in the consolidated financial statements from such a position should be measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. Accordingly, the Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in tax expense.
Basic and diluted net income per share		q.	Basic and diluted net income per share:
	The Company applies the two class method as required by ASC No. 260-10, “Earnings Per Share” (“ASC No. 260-10”). ASC 260-10 requires the income per share for each class of shares (ordinary and preferred shares) to be calculated assuming 100% of the Company’s earnings are distributed as dividends to each class of shares based on their contractual rights. No dividends were declared or paid during the reported periods.
	Basic and diluted net income per share is computed based on the weighted-average number of shares of ordinary shares outstanding during each year. Diluted income per share is computed based on the weighted average number of ordinary shares outstanding during the period, plus dilutive potential shares considered outstanding during the period, in accordance with ASC 260-10. The total weighted average number of shares related to outstanding options, warrants and preferred shares that have been excluded from the calculations of diluted net earnings per share was 2,016,995, 17,062,890, 437,176, 21,542,985 (unaudited) and 71,475 (unaudited) for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), respectively.
Comprehensive income (loss)		r.	Comprehensive income (loss):
	The Company accounts for comprehensive income (loss) in accordance with Accounting Standards Codification No. 220, “Comprehensive Income” (“ASC No. 220”). This statement establishes standards for the reporting and display of comprehensive income (loss) and its components in a full set of general purpose financial statements. Comprehensive income (loss) generally represents all changes in shareholders’ equity during the period except those resulting from investments by, or distributions to shareholders.
Concentration of credit risks		s.	Concentration of credit risks:
	Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, short-term bank deposits and trade receivables.
	The majority of the Company’s cash and cash equivalents and short-term bank deposits are invested with major bank in Israel and the United States. Such investments in the United States may be in excess of insured limits and are not insured in other jurisdictions. Generally, these investments may be redeemed upon demand and, therefore, bear minimal risk.
	The trade receivables of the Company are mainly derived from sales to customers located primarily in the United States, Europe and Asia. The Company performs ongoing credit evaluations of its customers and to date has not experienced any significant losses.
Fair value of financial instruments	t.	Fair value of financial instruments:
	The estimated fair value of financial instruments has been determined by the Company using available market information and valuation methodologies. Considerable judgment is required in estimating fair values. Accordingly, the estimates may not be indicative of the amounts the Company could realize in a current market exchange.
	The following methods and assumptions were used by the Company in estimating the fair value of their financial instruments:
	The carrying values of cash and cash equivalents, short-term bank deposits, trade receivables, prepaid expenses and other current assets, trade payables, employees and payroll accruals and accrued expenses and other current liabilities approximate fair values due to the short-term maturities of these instruments.
	The Company applies ASC No. 820, “Fair Value Measurements and Disclosures” (“ASC No. 820”), with respect to fair value measurements of all financial assets and liabilities.
	The fair value of foreign currency contracts (used for hedging purposes) is estimated by obtaining current quotes from banks and third party valuations.
	Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer 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 1 -		Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.
	Level 2 -		Include other inputs that are directly or indirectly observable in the marketplace.
	Level 3 -		Unobservable inputs which are supported by little or no market activity.
	The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.
	In accordance with ASC 820, the Company measures its foreign currency derivative contracts, at fair value using the market approach valuation technique. Foreign currency derivative contracts as detailed in note 2.i are classified within Level 2 value hierarchy, as the valuation inputs are based on quoted prices and market observable data of similar instruments. Warrants to purchase preferred shares as detailed in note 2.u are classified within Level 3 value hierarchy, which is determined using a valuation model completed by a third party valuation firm.
Warrants to purchase preferred shares	u.	Warrants to purchase preferred shares:
	The Company accounted for freestanding warrants to purchase shares of its preferred shares as a liability on its consolidated balance sheet at fair value. The warrants to purchase preferred shares were recorded as a liability as the underlying preferred shares were contingently redeemable (upon a deemed liquidation event) and, therefore, could have obligated the Company to transfer assets in the future. The warrants were subject to re-measurement to fair value at each balance sheet date and any change in fair value was recognized as a component of financial income (expense), net, on the consolidated statements of comprehensive income. During the year ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited), the Company recorded financial expenses from change in the warrants’ fair value in the amount of $176, $1,446, $4,309 and $1,396 (unaudited), respectively.
	Upon the IPO, the warrants were exercised for Series B3 preferred shares which were later converted into ordinary shares. See also note 7.c.2. The Company re-measured the warrants as of the conversion date using the intrinsic value based on the IPO price.
	The following assumptions were used to estimate the value of the Series B3 preferred shares warrants as of December 31, 2012, 2013 and the three months ended March 31, 2014 (unaudited):
			Year ended						Three months ended
			December 31,						March 31,
			2012			2013			2014
									Unaudited
	Expected volatility			45	%		45	%		45	%
	Expected dividends			0			0			0
	Expected term (in years)			2.5			2			0.75
	Risk free rate			0.32	%		0.31	%		0.1	%
Impact of recently issued accounting standards		v.	The impact of recently issued accounting standards still not effective for the Company as of December 31, 2014 is as follows:
	In May 2014, the FASB issued an accounting standard update on revenue from contracts with customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The new guidance will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. On April 1, 2015, the FASB proposed deferring the effective date by one year to December 15, 2017 for annual reporting periods beginning after that date. The FASB also proposed permitting early adoption of the standard, but not before the original effective date of December 15, 2016. The Company is currently evaluating the effect that the new guidance will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

SIGNIFICANT_ACCOUNTING_POLICIE2

SIGNIFICANT ACCOUNTING POLICIES (Tables)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Property and Equipment	Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets at the following annual rates:
		%
	Computers and related equipment	25 - 33
	Office furniture and equipment	20-Jul
	Trade show equipment	33
	Leasehold improvements	Over the shorter of the related
		lease period or the life of the
		asset
Assumptions Used to Estimate Value of Series B3 Preferred Shares Warrants	The following assumptions were used to estimate the value of the Series B3 preferred shares warrants as of December 31, 2012, 2013 and the three months ended March 31, 2014 (unaudited):
		Year ended						Three months ended
		December 31,						March 31,
		2012			2013			2014
								Unaudited
	Expected volatility		45	%		45	%		45	%
	Expected dividends		0			0			0
	Expected term (in years)		2.5			2			0.75
	Risk free rate		0.32	%		0.31	%		0.1	%

PREPAID_EXPENSES_AND_OTHER_CUR1

PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)	3 Months Ended
	Mar. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid Expense and Other Current Assets	December 31,					March 31,
		2013		2014			2015
							Unaudited
	Government authorities	$	34	$	18		$	6
	Hedging transaction assets		225		—			326
	Prepaid expenses		1,466		1,793			2,398
	Other current assets		358		267			268
		$	2,083	$	2,078		$	2,998

PROPERTY_AND_EQUIPMENT_Tables

PROPERTY AND EQUIPMENT (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property and Equipment		December 31,				March 31,
		2013		2014		2015
						Unaudited
	Cost:
	Computers and related equipment	$	2,040	$	2,293	$	2,360
	Leasehold improvements		575		557		709
	Office furniture and equipment		406		687		811
	Trade show equipment		60		—		—
			3,081		3,537		3,880
	Less accumulated depreciation		1,809		1,389		1,559
	Depreciated cost	$	1,272	$	2,148	$	2,321

ACCRUED_EXPENSES_AND_OTHER_CUR1

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	December 31,					March 31,
		2013		2014			2015
							Unaudited
	Government authorities	$	3,603	$	5,015		$	3,803
	Accrued expenses		642		1,186			1,573
	Uncertain tax position		272		322			363
	Hedging transaction liabilities		—		419			401
		$	4,517	$	6,942		$	6,140

COMMITMENTS_AND_CONTINGENT_LIA1

COMMITMENTS AND CONTINGENT LIABILITIES (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Minimum Rental Payments Under Operating Leases	The minimum rental payments under operating leases as of December 31, 2014, are as follows:
		Rental of		Lease of
		premises		motor vehicles
	2015	$	2,121	$	180
	2016		1,819		103
	2017		603		33
	2018		614		—
	2019 and thereafter		2,089		—
		$	7,246	$	316

SHAREHOLDERS_EQUITY_Tables

SHAREHOLDERS' EQUITY (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Composition of Shares Capital of the Company			Composition of shares capital of the Company:
			December 31, 2013						December 31, 2014				31-Mar-15
			Authorized			Issued and			Authorized		Issued and		Authorized		Issued and
						outstanding					outstanding				outstanding
			Number of shares										Number of shares
													Unaudited
	Ordinary shares of NIS 0.01 par value each			31,785,000			7,019,352			250,000,000		30,501,352		250,000,000		30,757,908
	Series A preferred shares			378,000			378,000			—		—		—		—
	Series A1 preferred shares			1,637,000			1,185,190			—		—		—		—
	Series B preferred shares			9,000,000			8,515,390			—		—		—		—
	Series B1 preferred shares			2,600,000			2,575,650			—		—		—		—
	Series B2 preferred shares			4,000,000			3,206,620			—		—		—		—
	Series B3 preferred shares			600,000			97,440			—		—		—		—
				50,000,000			22,977,642			250,000,000		30,501,352		250,000,000		30,757,908
Conversion Ratio	Following the Company’s IPO, as described in note 7.b, all of the Company preferred shares were automatically converted into ordinary shares based on a conversion ratio detailed in the Company’s Articles of Association, as follows:
			Conversion Ratio
	Series A preferred Shares			1.094
	Series A1 preferred Shares			1.485
	Series B preferred Shares			1
	Series B1 preferred Shares(*)			1
	Series B2 preferred Shares			1
	Series B3 preferred Shares			1
	(*)	with respect only to the Series B1 preferred shares, serial numbers 226,503 to 257,565 (inclusive), the Conversion Price was 1.543, which results in a Conversion Ratio of 1.001451717.
Total Share-Based Compensation Expense Related to all of Equity-Based Awards	The total share-based compensation expense related to all of the Company’s equity-based awards, recognized for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), was comprised as follows:
			Year ended								Three months ended
			December 31,								March 31,
			2012			2013			2014		2014		2015
											Unaudited
	Cost of revenues		$	32		$	39		$	137	$	20	$	63
	Research and development			58			73			172		30		82
	Sales and marketing			81			126			347		42		139
	General and administrative			113			165			917		64		181
	Total share-based compensation expense		$	284		$	403		$	1,573	$	156	$	465
Summary of the Activity in Options Granted to Employees	A summary of the activity in options granted to employees for the year ended December 31, 2014 and the three months ended March 31, 2015 (unaudited) is as follows:
			Amount			Weighted			Weighted		Aggregate
			of			average			average		intrinsic value
			options			exercise			remaining
						price			contractual
									term
									(in years)
	Balance as of December 31, 2013			4,542,466		$	1.41			6.67	$	22,970
	Granted			386,700		$	15.56
	Exercised			(255,562	)	$	0.74
	Forfeited			(108,840	)	$	4.57
	Balance as of December 31, 2014			4,564,764		$	2.57			5.96	$	169,410
	Granted			25,000		$	58.86
	Exercised			(242,257	)	$	0.96
	Forfeited			(8,825	)	$	30.29
	Balance as of March 31, 2015			4,338,682		$	2.93			5.87	$	228,462
	Exercisable as of December 31, 2014			3,458,332		$	1.13			5.12	$	133,218
	Vested and expected to vest as of December 31, 2014			4,535,633		$	2.55			5.94	$	168,422
	Exercisable as of March 31, 2015 (unaudited)			3,367,653		$	1.34			5.14	$	182,635
	Vested and expected to vest as of March 31, 2015 (unaudited)			4,313,084		$	2.9			5.18	$	227,137
Parameters Used in Computation of the Options Compensation	The following table set forth the parameters used in computation of the options compensation to employees for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited):
			Year ended					Three months
			December 31,					ended March 31,
			2012		2013	2014		2014	2015
								Unaudited
	Expected volatility		40%-45%		45%	45%		45%	45%
	Expected dividends		0		0	0		0	0
	Expected term (in years)		5.28-6.11		6.11	5.81-6.11		6.06	6.03
	Risk free rate		0.61%-2.64%		1.15%-2.64%	1.55%-2.02%		1.81%	1.37%
Summary of Options Data	A summary of options data for the years ended December 31, 2012, 2013 and 2014 and the three months ended March 31, 2014 (unaudited) and 2015 (unaudited), is as follows:
			Year ended								Three months
			December 31,								ended March 31,
			2012			2013			2014		2014		2015
											Unaudited
	Weighted-average grant date fair value of options granted		$	0.61		$	2.03		$	6.95	$	4	$	58.86
	Total intrinsic value of the options exercised		$	221		$	1,858		$	9,943	$	1,061	$	12,460
	Total fair value of options vested		$	219		$	340		$	925	$	135	$	372
Summary of Outstanding and Exercisable Options Granted	The following tables summarize information about the Company’s outstanding and exercisable options granted to employees as of December 31, 2014 and as of March 31, 2015 (unaudited):
	Exercise price		Options			Weighted			Options		Weighted
			outstanding			average			exercisable		average
			as of			remaining			as of		remaining
			December 31,			contractual			December 31,		contractual
			2014			term			2014		term
						(years)					(years)
	$0.20			309,250			5.37			309,250		5.37
	$0.41			1,581,890			3.04			1,581,890		3.04
	$1.06			379,700			6.43			356,853		6.41
	$1.46			1,080,623			7.39			809,290		7.39
	$1.78			345,700			6.78			204,233		5.93
	$2.21			123,551			8.42			51,744		8.42
	$6.47			365,250			8.97			95,160		8.97
	$8.84			50,000			9.09			31,250		9.09
	$9.93			70,400			9.32			—		—
	$14.00			224,000			9.7			18,662		9.7
	$44.37			34,400			9.88			—		—
				4,564,764			5.96			3,458,332		5.12
	Exercise price		Options			Weighted			Options		Weighted
			outstanding			average			exercisable		average
			as of			remaining			as of		remaining
			March 31,			contractual			March 31,		contractual
			2015			term			2015		term
						(years)					(years)
	$0.20			279,890			5.31			279,890		5.31
	$0.41			1,477,147			2.8			1,477,147		2.8
	$1.06			351,306			6.15			340,133		6.14
	$1.46			1,064,868			7.14			846,155		7.14
	$1.78			287,420			7.77			163,587		7.76
	$2.21			118,751			8.17			57,191		8.17
	$6.47			362,250			8.72			115,007		8.72
	$8.84			50,000			8.84			32,812		8.84
	$9.93			68,775			9.07			15,775		9.07
	$14.00			224,000			9.46			37,331		9.46
	$44.37			30,775			9.63			2,625		9.63
	$58.86			23,500			9.89			—		—
				4,338,682			5.87			3,367,653		5.14
Summary of RSU Activity	f.	A summary of RSU activity for the year ended December 31, 2014 and the three months ended March 31, 2015 (unaudited), is as follows:
			Amount			Weighted
			of			average
			options			grant date fair
						value
	Unvested as of December 31, 2013			—			—
	Granted			29,200		$	44.37
	Forfeited			(1,240	)	$	44.37
	Unvested as of December 31, 2014			27,960		$	44.37
	Granted			18,400		$	58.86
	Forfeited			(3,320	)	$	49,61
	Unvested as of March 31, 2015			43,040		$	50.16

INCOME_TAXES_Tables

INCOME TAXES (Tables)	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Composition of Income Before Taxes on Income		Income before taxes on income is comprised as follows:
		Year ended December 31,
		2012			2013			2014
	Domestic	$	6,267		$	6,304		$	13,194
	Foreign		1,370			1,651			1,272
		$	7,637		$	7,955		$	14,466
Significant Components of the Deferred Tax Assets and Liabilities	Significant components of the Company’s deferred tax assets and liabilities are as follows:
		Year ended
		December 31,
		2013			2014
	Deferred tax assets:
	Net operating loss carry-forwards	$	697		$	50
	Capital losses carry-forwards		55			52
	Research and development expenses		1,498			2,116
	Deferred revenues		1,558			1,824
	Issuance expenses		—			1,083
	Other		541			904
	Deferred tax assets before valuation allowance		4,349			6,029
	Valuation allowance		195			52
	Deferred tax asset	$	4,154		$	5,977
	Deferred tax liabilities:
	Property and equipment depreciation and other	$	56		$	176
	Deferred tax liabilities	$	56		$	176
Composition of Income Taxes		Income taxes are comprised as follows:
		Year ended
		December 31,
		2012			2013			2014
	Current	$	233		$	2,089		$	4,467
	Deferred		(458	)		(769	)		45
		$	(225	)	$	1,320		$	4,512
		Year ended
		December 31,
		2012			2013			2014
	Domestic	$	(729	)	$	1,096		$	2,485
	Foreign		504			224			2,027
		$	(225	)	$	1,320		$	4,512
Reconciliation of Theoretical Income Tax Expense to Actual Income Tax Expense		A reconciliation of the Company’s theoretical income tax expense to actual income tax expense as follows:
		Year ended
		December 31,
		2012			2013			2014
	Income before income taxes	$	7,637		$	7,955		$	14,466
	Statutory tax rate		25	%		25	%		26.5	%
	Theoretical income tax expense		1,909			1,989			3,833
	Utilization of tax losses and deferred taxes for which valuation allowance was provided, net		2			4			(143	)
	Deferred taxes on losses for which valuation allowance was provided, net		(457	)		(91	)		834
	Non-deductible expenses		23			251			1,165
	Increase in other uncertain tax positions—net					175			19
	Tax adjustment in respect of different tax rate		(1,737	)		(979	)		(838	)
	Other		35			(29	)		(358	)
	Income tax expense (benefit)	$	(225	)	$	1,320		$	4,512
Reconciliation of Unrecognized Tax Benefits	A reconciliation of the opening and closing amounts of total unrecognized tax benefits is as follows:
		Year ended
		December 31,
		2013			2014
	Opening balance	$	97		$	272
	Increases (decrease) related to prior year tax positions		10			(5	)
	Increases related to current year tax positions		165			55
	Closing balance	$	272		$	322

FINANCIAL_INCOME_EXPENSES_NET_

FINANCIAL INCOME (EXPENSES), NET (Tables)	3 Months Ended
	Mar. 31, 2015
Other Income and Expenses [Abstract]
Schedule of Financial Income (Expenses)	Year ended									Three months ended
	December 31,									March 31,
		2012			2013			2014			2014			2015
											Unaudited
	Bank charges	$	(47	)	$	(62	)	$	(63	)	$	(12	)	$	(16	)
	Changes in fair value of warrants to purchase preferred shares		(176	)		(1,446	)		(4,309	)		(1,396	)		—
	Exchange rate gain (loss), net		121			307			(1,817	)		37			(1,689	)
	Total expenses		(102	)		(1,201	)		(6,189	)		(1,371	)		(1,705	)
	Interest income		106			77			201			15			74
	Total financial income (expenses), net	$	4		$	(1,124	)	$	(5,988	)	$	(1,356	)	$	(1,631	)

BASIC_AND_DILUTED_NET_INCOME_P1

BASIC AND DILUTED NET INCOME PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Basic and Diluted Net Income Per Share	Year ended									Three months ended
	December 31,									March 31,
		2012			2013			2014			2014			2015
											Unaudited
	Numerator:
	Net income	$	7,862		$	6,635		$	9,954		$	(1,248	)	$	4,166
	Dividends accumulated for the period		(4,530	)		(4,879	)		(3,815	)		(1,262	)		—
	Net income available to shareholders of ordinary shares	$	3,332		$	1,756		$	6,139		$	(2,510	)	$	4,166
	Denominator:
	Shares used in computing net income per ordinary shares, basic		6,592,997			6,900,433			13,335,059			7,073,239			30,563,888
		Year ended									Three months ended
		December 31,									March 31,
		2012			2013			2014			2014			2015
											Unaudited
	Numerator:
	Net income	$	7,862		$	6,635		$	9,954		$	(1,248	)	$	4,166
	Dividends accumulated for the period		—			(4,879	)		—			(1,262	)		—
	Net income available to shareholders of ordinary shares	$	7,862		$	1,756		$	9,954		$	(2,510	)	$	4,166
	Denominator:
	Shares used in computing net income per ordinary shares, diluted		25,245,790			10,765,914			29,704,730			7,073,239			34,786,581

SEGMENTS_CUSTOMERS_AND_GEOGRAP1

SEGMENTS, CUSTOMERS AND GEOGRAPHIC INFORMATION (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of Revenues by Geographic Locations	Revenues:
			Year ended						Three months ended
			December 31,						March 31,
			2012		2013		2014		2014		2015
									Unaudited
	United States		$	26,178	$	32,041	$	60,761	$	10,300	$	16,434
	Israel			2,999		3,383		4,234		881		1,038
	United Kingdom			2,627		6,862		12,220		713		3,554
	EMEA (*)			8,522		15,551		16,744		3,445		7,753
	Other			6,882		8,320		9,040		2,056		4,136
			$	47,208	$	66,157	$	102,999	$	17,395	$	32,915
Schedule of Long-lived Assets by Geographic Locations	long-lived assets:
			December 31,				March 31,
			2013		2014		2015
							Unaudited
	United States		$	184	$	606	$	631
	Israel			939		1,336		1,465
	United Kingdom			144		143		160
	EMEA (*)			5		15		17
	Other			—		48		48
			$	1,272	$	2,148	$	2,321
	(*)	Europe, the Middle East and Africa excluding United Kingdom and Israel

General_Additional_Information

General - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2015
General [Line Items]
Total net proceeds received from IPO	$88,468
IPO
General [Line Items]
Ordinary shares issued for service	5,360,000
Public offering price	$16
Underwriting discounts and commissions	6,904
Other offering expense	3,846
Over-Allotment Option
General [Line Items]
Ordinary shares issued for service	804,000	600,000
Public offering price	$16
Offering expense	592
Secondary Offering
General [Line Items]
Ordinary shares issued for service		4,000,000
Public offering price		51
Offering expense		1,081

Recovered_Sheet1

Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Significant Accounting Policies [Line Items]
Weighted average interest rates, bank deposit	0.40%		0.60%	0.50%
Accumulated other comprehensive loss from currency forward and option transactions	$295,000		$333,000
Accumulated other comprehensive loss from currency forward and option transactions, tax	56,000		63,000
Employees entitled severance monthly deposit, as a percentage of salary	8.33%
Severance expense	531,000	292,000	1,187,000	1,057,000	667,000
Marketing expenses	1,258,000	1,258,000	5,896,000	5,155,000	3,723,000
Dividends declared or paid	0
Antidilutive securities excluded from computation of earnings per share, amount	71,475	21,542,985	437,176	17,062,890	2,016,995
Changes in fair value of warrants to purchase preferred shares		1,396,000	4,309,000	1,446,000	176,000
Foreign Exchange Contract
Significant Accounting Policies [Line Items]
Notional amounts	16,150,000		10,450,000
United States
Significant Accounting Policies [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	60.00%
Maximum annual contribution per employee	17,500
Matching contribution expense			544,000	372,000	237,000
United States | Maximum
Significant Accounting Policies [Line Items]
Maximum employer's annual contribution per employee			9,800
United States | Certain employees over 50 years of age
Significant Accounting Policies [Line Items]
Maximum annual contribution per employee	$23,000
United States | First 3% of Employee Contribution
Significant Accounting Policies [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match			100.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay			3.00%
United States | Next 2% of Employee Contribution
Significant Accounting Policies [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match			50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay			2.00%

Property_and_Equipment_Depreci

Property and Equipment Depreciation Rate (Detail)	3 Months Ended
	Mar. 31, 2015
Computers and Related Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment annual depreciation rate	25.00%
Computers and Related Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment annual depreciation rate	33.00%
Office Furniture And Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment annual depreciation rate	7.00%
Office Furniture And Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment annual depreciation rate	20.00%
Trade Show Equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment annual depreciation rate	33.00%
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment annual depreciation rate	Over the shorter of the related lease period or the life of the asset

Assumptions_Used_to_Estimate_P

Assumptions Used to Estimate Preferred Shares Warrant (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]
Expected volatility	45.00%	45.00%	45.00%
Expected dividends	0.00%	0.00%	0.00%
Expected term (in years)	9 months	2 years	2 years 6 months
Risk free rate	0.10%	0.31%	0.32%

Prepaid_Expense_and_Other_Curr

Prepaid Expense and Other Current Assets (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Prepaid Expense and Other Assets, Current [Abstract]
Government authorities	$6	$18	$34
Hedging transaction assets	326		225
Prepaid expenses	2,398	1,793	1,466
Other current assets	268	267	358
Prepaid expenses and other current assets	$2,998	$2,078	$2,083

Composition_of_Property_and_Eq

Composition of Property and Equipment (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$3,880	$3,537	$3,081
Less accumulated depreciation	1,559	1,389	1,809
Depreciated cost	2,321	2,148	1,272
Computers and Related Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,360	2,293	2,040
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	709	557	575
Office Furniture And Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	811	687	406
Trade Show Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross			$60

Property_And_Equipment_Additio

Property And Equipment - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense	$222	$227	$746	$475	$329

Recovered_Sheet2

Accrued Expenses And Other Current Liabilities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Government authorities	$3,803	$5,015	$3,603
Accrued expenses	1,573	1,186	642
Uncertain tax position	363	322	272
Hedging transaction liabilities	401	419
Accrued expenses and other current liabilities	$6,140	$6,942	$4,517

Minimum_Rental_Payments_Under_

Minimum Rental Payments Under Operating Leases (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Rental of Premises
Property Subject to or Available for Operating Lease [Line Items]
2015	$2,121
2016	1,819
2017	603
2018	614
2019 and thereafter	2,089
Operating Leases, Future Minimum Payments Due, Total	7,246
Lease of Motor Vehicles
Property Subject to or Available for Operating Lease [Line Items]
2015	180
2016	103
2017	33
Operating Leases, Future Minimum Payments Due, Total	$316

Commitment_And_Contingent_Liab

Commitment And Contingent Liabilities - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2015
Operating Leased Assets [Line Items]
Rent expenses	$2,309	$1,303	$897
Pledged bank deposit for office lease agreement and hedging transaction				839
Bank guarantee, office lease agreement				222
Lease of Motor Vehicles
Operating Leased Assets [Line Items]
Rent expenses	$369	$386	$305

Components_of_Stockholders_Equ

Components of Stockholders Equity (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Ordinary Shares Authorized	250,000,000	250,000,000	31,785,000
Ordinary shares, issued	30,757,908	30,501,352	7,019,352
Ordinary shares, outstanding	30,757,908	30,501,352	7,019,352
Ordinary shares, par value	$0.01	$0.01	$0.01
Preferred stock, shares authorized	0	0	18,215,000
Preferred stock, issued	0	0	15,958,290
Preferred stock, outstanding	0	0	15,958,290
Shares Authorized	250,000,000	250,000,000	50,000,000
Shares Issued	30,757,908	30,501,352	22,977,642
Shares Outstanding	30,757,908	30,501,352	22,977,642
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized			378,000
Preferred stock, issued			378,000
Preferred stock, outstanding			378,000
Series A1 Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized			1,637,000
Preferred stock, issued			1,185,190
Preferred stock, outstanding			1,185,190
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized			9,000,000
Preferred stock, issued			8,515,390
Preferred stock, outstanding			8,515,390
Series B1 Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized			2,600,000
Preferred stock, issued			2,575,650
Preferred stock, outstanding			2,575,650
Series B2 Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized			4,000,000
Preferred stock, issued			3,206,620
Preferred stock, outstanding			3,206,620
Series B3 Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized			600,000
Preferred stock, issued			97,440
Preferred stock, outstanding			97,440

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	1 Months Ended			3 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Aug. 31, 2013	Jun. 30, 2012	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Class of Stock [Line Items]
Total net proceeds received from IPO	$88,468
Share split ratio			10
Stock split				In June, 2012, there was a ten-for-one share split by means of a share dividend of nine shares for each share then outstanding.
Share based compensation number of shares available for grant				763,033		184,261
Share based compensation expiration period				10 years
Share based compensation vesting period				4 years
Unrecognized share based compensation expense				5,012		4,273
Unrecognized share based compensation expense recognition period				2 years 11 months 23 days		2 years 11 months 1 day
Warrants issued		15,000
Warrants exercise price		$2.21
Expenses related to warrants		19
Expected dividend yield				0.00%	0.00%	0.00%	0.00%	0.00%
Fair value of shares per share				$55.57		$39.65
IPO
Class of Stock [Line Items]
Ordinary shares issued for service	5,360,000
Public offering price	$16
Underwriting discounts and commissions	6,904
Other offering expense	3,846
Over-Allotment Option
Class of Stock [Line Items]
Ordinary shares issued for service	804,000			600,000
Public offering price	$16
Offering expense included in additional paid-in capital balance	$592

Summary_of_Preferred_Stock_Con

Summary of Preferred Stock Conversion Ratio (Detail)	3 Months Ended
	Mar. 31, 2015
Series A Preferred Stock
Class of Stock [Line Items]
Preferred Shares, Conversion Ratio	1.094
Series A1 Preferred Stock
Class of Stock [Line Items]
Preferred Shares, Conversion Ratio	1.485
Series B Preferred Stock
Class of Stock [Line Items]
Preferred Shares, Conversion Ratio	1
Series B1 Preferred Stock
Class of Stock [Line Items]
Preferred Shares, Conversion Ratio	1	[1]
Series B2 Preferred Stock
Class of Stock [Line Items]
Preferred Shares, Conversion Ratio	1
Series B3 Preferred Stock
Class of Stock [Line Items]
Preferred Shares, Conversion Ratio	1
[1]	with respect only to the Series B1 preferred shares, serial numbers 226,503 to 257,565 (inclusive), the Conversion Price was 1.543, which results in a Conversion Ratio of 1.001451717.

Summary_of_Preferred_Stock_Con1

Summary of Preferred Stock Conversion Ratio (Parenthetical) (Detail) (Series B1 Preferred Stock, USD $)	3 Months Ended
	Mar. 31, 2015
Class of Stock [Line Items]
Preferred Shares, Conversion Ratio	1	[1]
Serial numbers 226,503 to 257,565 (inclusive)
Class of Stock [Line Items]
Preferred Shares, Conversion price	1.543
Preferred Shares, Conversion Ratio	1.001451717
[1]	with respect only to the Series B1 preferred shares, serial numbers 226,503 to 257,565 (inclusive), the Conversion Price was 1.543, which results in a Conversion Ratio of 1.001451717.

Schedule_of_Share_Based_Compen

Schedule of Share Based Compensation Expense (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$465	$156	$1,573	$403	$284
Cost of Revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	63	20	137	39	32
Research and Development Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	82	30	172	73	58
Selling and Marketing Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	139	42	347	126	81
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$181	$64	$917	$165	$113

Summary_of_Stock_Options_Activ

Summary of Stock Options Activity (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Amount of options
Beginning balance	4,564,764	4,542,466
Granted	25,000	386,700
Exercised	-242,257	-255,562
Forfeited	-8,825	-108,840
Ending balance	4,338,682	4,564,764	4,542,466
Exercisable as of December 31, 2014	3,367,653	3,458,332
Vested and expected to vest as of December 31, 2014	4,313,084	4,535,633
Weighted average exercise price
Beginning balance	$2.57	$1.41
Granted	$58.86	$15.56
Exercised	$0.96	$0.74
Forfeited	$30.29	$4.57
Ending balance	$2.93	$2.57	$1.41
Exercisable as of December 31, 2014	$1.34	$1.13
Vested and expected to vest as of December 31, 2014	$2.90	$2.55
Weighted average remaining contractual term (in years)
Options outstanding	5 years 10 months 13 days	5 years 11 months 16 days	6 years 8 months 1 day
Exercisable as of December 31, 2014	5 years 1 month 21 days	5 years 1 month 13 days
Vested and expected to vest as of December 31, 2014	5 years 2 months 5 days	5 years 11 months 9 days
Aggregate intrinsic value
Options outstanding	$228,462	$169,410	$22,970
Exercisable as of December 31, 2014	182,635	133,218
Vested and expected to vest as of December 31, 2014	$227,137	$168,422

Schedule_of_Parameters_Used_in

Schedule of Parameters Used in Computation Stock Options (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	45.00%	45.00%	45.00%	45.00%
Expected volatility, minimum					40.00%
Expected volatility, maximum					45.00%
Expected dividends	0.00%	0.00%	0.00%	0.00%	0.00%
Expected term (in years)	6 years 11 days	6 years 22 days		6 years 1 month 10 days
Risk free rate	1.37%	1.81%
Risk free rate, minimum			1.55%	1.15%	0.61%
Risk free rate, maximum			2.02%	2.64%	2.64%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)			5 years 9 months 22 days		5 years 3 months 11 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)			6 years 1 month 10 days		6 years 1 month 10 days

Summary_of_Options_Data_Detail

Summary of Options Data (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted-average grant date fair value of options granted	$58.86	$4	$6.95	$2.03	$0.61
Total intrinsic value of the options exercised	$12,460	$1,061	$9,943	$1,858	$221
Total fair value of options vested	$372	$135	$925	$340	$219

Summary_of_Outstanding_and_Exe

Summary of Outstanding and Exercisable Options (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	4,338,682	4,564,764
Weighted average remaining contractual term (years)	5 years 10 months 13 days	5 years 11 months 16 days
Options exercisable	3,367,653	3,458,332
Weighted average remaining contractual term (years)	5 years 1 month 21 days	5 years 1 month 13 days
0.2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	0.2	0.2
Options outstanding	279,890	309,250
Weighted average remaining contractual term (years)	5 years 3 months 22 days	5 years 4 months 13 days
Options exercisable	279,890	309,250
Weighted average remaining contractual term (years)	5 years 3 months 22 days	5 years 4 months 13 days
0.41
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	0.41	0.41
Options outstanding	1,477,147	1,581,890
Weighted average remaining contractual term (years)	2 years 9 months 18 days	3 years 15 days
Options exercisable	1,477,147	1,581,890
Weighted average remaining contractual term (years)	2 years 9 months 18 days	3 years 15 days
1.06
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	1.06	1.06
Options outstanding	351,306	379,700
Weighted average remaining contractual term (years)	6 years 1 month 24 days	6 years 5 months 5 days
Options exercisable	340,133	356,853
Weighted average remaining contractual term (years)	6 years 1 month 21 days	6 years 4 months 28 days
1.46
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	1.46	1.46
Options outstanding	1,064,868	1,080,623
Weighted average remaining contractual term (years)	7 years 1 month 21 days	7 years 4 months 21 days
Options exercisable	846,155	809,290
Weighted average remaining contractual term (years)	7 years 1 month 21 days	7 years 4 months 21 days
1.78
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	1.78	1.78
Options outstanding	287,420	345,700
Weighted average remaining contractual term (years)	7 years 9 months 7 days	6 years 9 months 11 days
Options exercisable	163,587	204,233
Weighted average remaining contractual term (years)	7 years 9 months 4 days	5 years 11 months 5 days
2.21
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	2.21	2.21
Options outstanding	118,751	123,551
Weighted average remaining contractual term (years)	8 years 2 months 1 day	8 years 5 months 1 day
Options exercisable	57,191	51,744
Weighted average remaining contractual term (years)	8 years 2 months 1 day	8 years 5 months 1 day
6.47
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	6.47	6.47
Options outstanding	362,250	365,250
Weighted average remaining contractual term (years)	8 years 8 months 19 days	8 years 11 months 19 days
Options exercisable	115,007	95,160
Weighted average remaining contractual term (years)	8 years 8 months 19 days	8 years 11 months 19 days
8.84
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	8.84	8.84
Options outstanding	50,000	50,000
Weighted average remaining contractual term (years)	8 years 10 months 2 days	9 years 1 month 2 days
Options exercisable	32,812	31,250
Weighted average remaining contractual term (years)	8 years 10 months 2 days	9 years 1 month 2 days
9.93
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	9.93	9.93
Options outstanding	68,775	70,400
Weighted average remaining contractual term (years)	9 years 26 days	9 years 3 months 26 days
Options exercisable	15,775
Weighted average remaining contractual term (years)	9 years 26 days	0 years
14
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	14	14
Options outstanding	224,000	224,000
Weighted average remaining contractual term (years)	9 years 5 months 16 days	9 years 8 months 12 days
Options exercisable	37,331	18,662
Weighted average remaining contractual term (years)	9 years 5 months 16 days	9 years 8 months 12 days
44.37
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	44.37	44.37
Options outstanding	30,775	34,400
Weighted average remaining contractual term (years)	9 years 7 months 17 days	9 years 10 months 17 days
Options exercisable	2,625
Weighted average remaining contractual term (years)	9 years 7 months 17 days	0 years
58.86
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	58.86
Options outstanding	23,500
Weighted average remaining contractual term (years)	9 years 10 months 21 days
Weighted average remaining contractual term (years)	0 years

Summary_of_RSU_Activity_Detail

Summary of RSU Activity (Detail) (RSU, USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
RSU
Unvested Amount of options
Unvested at beginning of period, shares	27,960
Granted, shares	18,400	29,200
Forfeited, shares	-3,320	-1,240
Unvested at ending of period, shares	43,040	27,960
Unvested weighted average grant date fair value
Unvested at beginning of period, weighted average grant date fair value	$44.37
Unvested weighted average grant date fair value, Granted	$58.86	$44.37
Unvested weighted average grant date fair value, Forfeited	$49.61	$44.37
Unvested at ending of period, weighted average grant date fair value	$50.16	$44.37

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended	3 Months Ended	12 Months Ended				0 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2015	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2015	Dec. 29, 2010
Income Tax Disclosure [Line Items]
Tax exempt profits	$13,080
Income tax liability that would have been incurred if the Company's retained tax-exempt income is distributed	3,210
Balance of total unrecognized tax benefits	322		272	97
Approved Enterprise
Income Tax Disclosure [Line Items]
Income tax holiday, description		The Company has been granted "Approved Enterprise" Status, under the above Law. The Company has elected the alternative benefits program, waiver of grants in return for tax exemptions. Pursuant thereto, the income of the Company derived from the "Approved Enterprise" program is tax-exempt for two years and will enjoy a reduced tax rate of 10%-25% for up to a total of eight years
Development Zone A
Income Tax Disclosure [Line Items]
Reduced tax rate	7.00%		7.00%	10.00%	10.00%
Development Zone A | Scenario, Forecast
Income Tax Disclosure [Line Items]
Reduced tax rate						6.00%
Other Areas
Income Tax Disclosure [Line Items]
Reduced tax rate	12.50%		12.50%	15.00%	15.00%
Other Areas | Scenario, Forecast
Income Tax Disclosure [Line Items]
Reduced tax rate						12.00%
Minimum
Income Tax Disclosure [Line Items]
Effective income tax rate							25.00%
Minimum | Approved Enterprise
Income Tax Disclosure [Line Items]
Reduced tax rate		10.00%
Maximum | Approved Enterprise
Income Tax Disclosure [Line Items]
Reduced tax rate		25.00%
Israel Tax Authority
Income Tax Disclosure [Line Items]
Corporate tax rate in effect	26.50%	26.50%	25.00%	25.00%	24.00%
Capital tax losses	$197
Israel Tax Authority | Dividend paid [Member]
Income Tax Disclosure [Line Items]
Corporate tax rate in effect		20.00%
Israel Tax Authority | Development Zone A
Income Tax Disclosure [Line Items]
Corporate tax rate in effect		9.00%
Israel Tax Authority | Other Areas
Income Tax Disclosure [Line Items]
Corporate tax rate in effect		16.00%

Schedule_of_Income_Before_Inco

Schedule of Income Before Income Taxes (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Domestic			$13,194	$6,304	$6,267
Foreign			1,272	1,651	1,370
Income (loss) before taxes on income	$5,872	($1,165)	$14,466	$7,955	$7,637

Components_of_Deferred_Tax_Ass

Components of Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax assets:
Net operating loss carry-forwards	$50	$697
Capital losses carry-forwards	52	55
Research and development expenses	2,116	1,498
Deferred revenues	1,824	1,558
Issuance expenses	1,083
Other	904	541
Deferred tax assets before valuation allowance	6,029	4,349
Valuation allowance	52	195
Deferred tax asset	5,977	4,154
Deferred tax liabilities:
Property and equipment depreciation and other	176	56
Deferred tax liabilities	$176	$56

Components_of_Current_and_Defe

Components of Current and Deferred Income Taxes (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current income tax			$4,467	$2,089	$233
Deferred income tax	-245	95	45	-769	-458
Income tax expense (benefit)	$1,706	$83	$4,512	$1,320	($225)

Components_of_Income_Tax_by_Ge

Components of Income Tax by Geographic Location (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Domestic			$2,485	$1,096	($729)
Foreign			2,027	224	504
Income tax expense (benefit)	$1,706	$83	$4,512	$1,320	($225)

Summary_of_Effective_Income_Ta

Summary of Effective Income Tax Rate Reconciliation (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Income before income taxes	$5,872	($1,165)	$14,466	$7,955	$7,637
Theoretical income tax expense			3,833	1,989	1,909
Utilization of tax losses and deferred taxes for which valuation allowance was provided, net			-143	4	2
Deferred taxes on losses for which valuation allowance was provided, net			834	-91	-457
Non-deductible expenses			1,165	251	23
Increase in other uncertain tax positions-net			19	175
Tax adjustment in respect of different tax rate			-838	-979	-1,737
Other			-358	-29	35
Income tax expense (benefit)	$1,706	$83	$4,512	$1,320	($225)
Israel Tax Authority
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Statutory tax rate	26.50%		26.50%	25.00%	25.00%	24.00%

Schedule_of_Reconciliation_of_

Schedule of Reconciliation of Unrecognized Tax Benefit (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Opening balance	$272	$97
Increases related to prior year tax positions		10
Decrease related to prior year tax positions	-5
Increases related to current year tax positions	55	165
Closing balance	$322	$272

Schedule_of_Financial_Income_E

Schedule of Financial Income (Expense) (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Nonoperating Income (Expense) [Abstract]
Bank charges	($16)	($12)	($63)	($62)	($47)
Changes in fair value of warrants to purchase preferred shares		-1,396	-4,309	-1,446	-176
Exchange rate gain (loss), net	-1,689	37	-1,817	307	121
Total expenses	-1,705	-1,371	-6,189	-1,201	-102
Interest income	74	15	201	77	106
Total financial income (expenses), net	($1,631)	($1,356)	($5,988)	($1,124)	$4

Schedule_of_Basic_Earning_Per_

Schedule of Basic Earning Per Share (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income	$4,166	($1,248)	$9,954	$6,635	$7,862
Dividends accumulated for the period		-1,262	-3,815	-4,879	-4,530
Net income available to shareholders of ordinary shares	$4,166	($2,510)	$6,139	$1,756	$3,332
Denominator:
Shares used in computing net income per ordinary shares, basic	30,563,888	7,073,239	13,335,059	6,900,433	6,592,997

Schedule_of_Diluted_Earning_Pe

Schedule of Diluted Earning Per Share (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income	$4,166	($1,248)	$9,954	$6,635	$7,862
Dividends accumulated for the period		-1,262		-4,879
Net income available to shareholders of ordinary shares	$4,166	($2,510)	$9,954	$1,756	$7,862
Denominator:
Shares used in computing net income per ordinary shares, diluted	34,786,581	7,073,239	29,704,730	10,765,914	25,245,790

Schedule_of_Revenue_by_Geograp

Schedule of Revenue by Geographic Segments (Detail) (USD $)	3 Months Ended				12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$32,915		$17,395		$102,999		$66,157		$47,208
United States
Segment Reporting Information [Line Items]
Revenue	16,434		10,300		60,761		32,041		26,178
Israel
Segment Reporting Information [Line Items]
Revenue	1,038		881		4,234		3,383		2,999
United Kingdom
Segment Reporting Information [Line Items]
Revenue	3,554		713		12,220		6,862		2,627
EMEA
Segment Reporting Information [Line Items]
Revenue	7,753	[1]	3,445	[1]	16,744	[1]	15,551	[1]	8,522	[1]
Other
Segment Reporting Information [Line Items]
Revenue	$4,136		$2,056		$9,040		$8,320		$6,882
[1]	Europe, the Middle East and Africa excluding United Kingdom and Israel

Schedule_of_LongLived_Assets_b

Schedule of Long-Lived Assets by Geographic Segments (Detail) (USD $)	Mar. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]
Long lived assets	$2,321		$2,148		$1,272
United States
Segment Reporting Information [Line Items]
Long lived assets	631		606		184
Israel
Segment Reporting Information [Line Items]
Long lived assets	1,465		1,336		939
United Kingdom
Segment Reporting Information [Line Items]
Long lived assets	160		143		144
EMEA
Segment Reporting Information [Line Items]
Long lived assets	17	[1]	15	[1]	5	[1]
Other
Segment Reporting Information [Line Items]
Long lived assets	$48		$48
[1]	Europe, the Middle East and Africa excluding United Kingdom and Israel