Stock-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock-Based Compensation Expense

The Company accounts for its stock-based compensation at fair value. The following table summarizes stock-based compensation expense by financial statement line item for the three and six months ended September 30, 2015 and 2014 (in thousands):

	Three months ended September 30,				Six months ended September 30,
	2015		2014		2015		2014
Cost of revenues	$	61	$	194	$	158	$	346
Research and development		87		521		283		1,000
Selling, general and administrative		558		803		1,393		1,753
Total	$	706	$	1,518	$	1,834	$	3,099

Schedule of Weighted Average Assumptions used in Black-Scholes Valuation Model for Stock Options Granted

The weighted average assumptions used in the Black-Scholes valuation model for stock options granted during the three and six months ended September 30, 2015 and 2014 are as follows:

	Three months ended September 30,		Six months ended September 30,
	2015	2014	2015	2014
Expected volatility	N/A	N/A	N/A		85.5	%
Risk-free interest rate	N/A	N/A	N/A		1.9	%
Expected life (years)	N/A	N/A	N/A		5.8
Dividend yield	None	None	None	None