The Company and Summary of Significant Accounting Policies (Details)	0 Months Ended	3 Months Ended	12 Months Ended													0 Months Ended	12 Months Ended			0 Months Ended
	Oct. 03, 2012 USD ($)	Sep. 30, 2012	Dec. 31, 2013 USD ($) contract derivative	Dec. 31, 2012 USD ($) derivative	Dec. 31, 2011 USD ($)	Dec. 31, 2013 Minimum	Dec. 31, 2013 Maximum	Dec. 31, 2013 Scanner appliances	Dec. 31, 2013 Forward contracts USD ($)	Dec. 31, 2012 Forward contracts USD ($)	Dec. 31, 2013 Forward contracts EUR (€)	Dec. 31, 2013 Forward contracts GBP (£)	Dec. 31, 2012 Forward contracts EUR (€)	Dec. 31, 2013 Customer concentration risk Accounts receivable customer	Dec. 31, 2012 Customer concentration risk Accounts receivable customer	Oct. 03, 2012 Common Stock	Dec. 31, 2012 Common Stock	Dec. 31, 2013 Software and software development costs USD ($)	Dec. 31, 2012 Software and software development costs USD ($)	Oct. 03, 2012 Convertible Preferred Stock USD ($)	Oct. 03, 2012 IPO Common Stock USD ($)	Oct. 03, 2012 IPO Convertible Preferred Stock	Oct. 03, 2012 IPO Overallotment Common Stock
Initial Public Offering
Shares sold in IPO, including existing shares																					8,711,250
Shares sold in initial public offering, including existing shares, price per share																					$ 12.00
Issuance of common stock upon initial public offering, net of offering costs (in shares)																7,836,250	7,836,250						1,136,250
Shares sold by existing stockholders during initial public offering																					875,000
Proceeds from issuance of initial public offering	$ 87,500,000
Sale of stock, expenses incurred in offering	2,900,000
Conversion of stock, shares converted																						17,597,258
Concentration of Credit Risk
Concentration risk, number of customers														0	0
Property Equipment, Net
Property, plant and equipment, useful life						3 years	5 years	3 years
Goodwill and Intangible Assets
Finite-lived intangible asset, useful life						3 years	14 years
Software Development Costs
Capitalized development costs			3,469,000															300,000	300,000
Derivative Financial Instruments
Derivative, number of instruments held			2	1
Derivative, notional amount											6,300,000	2,000,000	10,700,000
Foreign currency contract, asset, fair value disclosure			0	0
Derivative instruments not designated as hedging instruments, loss									800,000
Foreign currency transaction gain, before tax			200,000	200,000
Foreign currency transaction gain (loss), before tax			(596,000)	(179,000)	(338,000)					(400,000)
Advertising Expenses
Advertising expense			4,200,000	4,300,000	4,100,000
Reverse Stock Split
Stockholders' equity, reverse stock split		one-for-ten reverse stock split
Stockholders' equity note, stock split, conversion ratio		0.1
Conversion of Stock, Amount Converted			$ 0	$ 63,873,000	$ 0															$ 63,900,000