Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
Income Taxes
Benefit (provision) for income taxes	$ 441,000	$ (86,000)	$ 562,000	$ (667,000)
Effective tax rate (as a percent)	(74.10%)	27.40%	(55.30%)	33.60%
Valuation allowance on deferred tax assets					373,000
Reconciliation of income tax provision (benefit) to taxes computed at U.S. federal statutory rates
Tax benefit of research credits	$ (134,000)		$ (134,000)