The Company and Summary of Significant Accounting Policies (Details)	3 Months Ended		9 Months Ended				9 Months Ended			12 Months Ended		0 Months Ended	9 Months Ended
	Sep. 30, 2012 USD ($) derivative	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($) derivative	Sep. 30, 2011 USD ($)	Dec. 31, 2011 USD ($) derivative	Dec. 31, 2010 USD ($)	Sep. 30, 2012 Scanner appliances	Sep. 30, 2012 Forward contracts EUR (€)	Dec. 31, 2011 Forward contracts EUR (€)	Dec. 31, 2011 Customer concentration risk Accounts receivable customer	Sep. 30, 2012 Customer concentration risk Accounts receivable customer	Oct. 03, 2012 Preferred stock USD ($)	Sep. 30, 2012 Minimum [Member]	Sep. 30, 2012 Maximum [Member]	Sep. 30, 2012 Software and software development costs USD ($)	Dec. 31, 2011 Software and software development costs USD ($)	Sep. 30, 2012 Fair Value, Inputs, Level 2 USD ($)
The company and qualitative disclosure about market risk [Line Items]
Conversion of stock, amount converted												$ 63,900,000
Concentration risk, number of customers										1	0
Concentration risk, percentage										13.00%
Cash	25,804,000	21,865,000	25,804,000	21,865,000	24,548,000	15,010,000
Deferred offering costs	2,533,000		2,533,000
Property, plant and equipment, useful Llfe							3 years						3 years	5 years
Finite-lived intangible asset, useful life													3 years	14 years
Capitalized development costs	3,420,000		3,420,000												251,000	251,000
Derivative, number of instruments held	1		1		1
Derivative, notional amount								7,600,000	3,680,000
Foreign currency contract, asset, fair value disclosure	0		0		0												0
Derivative instruments not designated as hedging instruments, loss	(362,000)		(91,000)
Foreign currency transaction gain, before tax	415,000		49,000
Advertising expense	830,000	1,021,000	2,983,000	2,933,000
Foreign currency transaction gain (loss), before tax	$ 53,000	$ (418,000)	$ (42,000)	$ 97,000
Stockholders' equity, reverse stock split			one-for-ten reverse stock split
Stockholders' equity note, stock split, conversion ratio			0.1