Stock Based Compensation (Details) (USD $)	6 Months Ended				0 Months Ended
	Sep. 30, 2014 plan	Sep. 30, 2014 Stock options	Sep. 30, 2014 Restricted Stock Units (RSUs)	Sep. 30, 2014 2007 Plan	Oct. 17, 2014 2007 Plan Subsequent Event
Stock-Based Compensation
Number of stock incentive plans	2
Employee Benefit Plans
Shares of common stock available for grant				424,000
Increase in number of shares of common stock authorized and reserved for issuance under the plan					1,500,000
Number of Shares
Options outstanding at the beginning of the period (in shares)		2,019,000
Granted (in shares)		60,000
Exercised (in shares)		(24,000)
Forfeited (in shares)		(189,000)
Expired (in shares)		(45,000)
Options outstanding at the end of the period (in shares)		1,821,000
Weighted Average Exercise Price Per Share
Options outstanding at the beginning of the period (in dollars per share)		$ 1.88
Granted (in dollars per share)		$ 1.90
Exercised (in dollars per share)		$ 1.40
Forfeited (in dollars per share)		$ 2.00
Expired (in dollars per share)		$ 2.51
Options outstanding at the end of the period (in dollars per share)		$ 1.86
Number of shares of common stock receivable upon vesting of each RSU			1
Number of Shares
Restricted stock units outstanding at the beginning of the period (in shares)			195,000
Restricted stock units vested (in shares)			(84,000)
Restricted stock units outstanding at the end of the period (in shares)			111,000