Stock Based Compensation (Tables)

9 Months Ended

Oct. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Assumptions Used to Calculate Fair Value of Common Stock Options for Employees and Non-Employees

The fair value of common stock options for employees and non-employees is estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions used:

	Nine Months Ended October 31,
	2013			2012
Estimated dividend yield		0	%		0	%
Expected stock price volatility		50.6	%		52.8	%
Weighted-average risk-free interest rate		2.2	%		1.2	%
Expected life of options (in years)		6.25			6.25

Stock-Based Compensation Expense Related to Stock Options Issued by the Company

Total stock-based compensation expense related to stock options issued by the Company is as follows:

	Three Months Ended October 31,				Nine Months Ended October 31,
	2013		2012		2013		2012
Cost of revenues	$	35	$	28	$	99	$	82
Sales and marketing		67		49		169		143
Research and development		110		75		264		232
General and administrative		138		83		314		253
Total	$	350	$	235	$	846	$	710