Share-based Compensation (Tables)

9 Months Ended

Dec. 31, 2013

Share-based Compensation [Abstract]

Weighted-average assumptions used to value the options granted

We determined the fair value of our option awards using the Black-Scholes option pricing model.  We used the following weighted-average assumptions to value the options granted during the nine months ended December 31:

	2013			2012
Expected life in years		4.51			5.42
Risk-free interest rate		1.35	%		0.93	%
Expected volatility		89.32	%		91.31	%
Expected dividend yield		0	%		0	%
Weighted-average grant date fair value	$	1.67		$	2.60

Stock option activity

The following table summarizes the activity related to our stock options during the nine months ended December 31, 2013:

	Number of shares			Weighted average exercise price		Weighted average remaining life in years		Aggregate intrinsic value
Outstanding at March 31, 2013		2,015,889		$	3.51		2.64	$	598
Options granted		908,625			2.51
Options exercised		(190,132	)		1.14
Options surrendered		(293,807	)		3.99
Outstanding at December 31, 2013		2,440,575		$	3.26		3.87	$	716
Exercisable at December 31, 2013		1,383,840		$	3.74		1.88	$	426

Restricted shares activity

The following table summarizes the activity related to our restricted shares during the nine months ended December 31, 2013:

	Number of Shares			Weighted average grant date fair value		Weighted average remaining life in years		Aggregate intrinsic value
Balance at March 31, 2013		180,085		$	4.39		1.50	$	790
Shares granted		121,750			3.06
Shares vested		(31,693	)		4.59
Shares forfeited		(90,074	)		4.38
Balance at December 31, 2013		180,068		$	3.45		2.32	$	622