Basic and Diluted Net Loss per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013		Mar. 31, 2012
Components Of Basic And Diluted Earning Per Share [Line Items]
Net income (loss)	$ (4,238)	$ 7,308		$ (11,944)
Less: Earnings allocated to participating securities		(7,117)	[1]
Net income (loss) available to common shareholders after required adjustments for the calculation of basic and diluted earnings per common share	$ (4,238)	$ 191		$ (11,944)
Basic weighted average common shares outstanding	10,339,919	12,889,284		8,781,407
Weighted average effect of dilutive securities:
Stock Options		7,135,601
Warrants		331,859
Diluted weighted average common shares outstanding	10,339,919	20,356,744		8,781,407
Earnings per common share
Basic	$ (0.41)	$ 0.01		$ (1.36)
Diluted	$ (0.41)	$ 0.01		$ (1.36)

[1] In a period with net income, both earnings and dividends (if any) are allocated to participating securities. In a period with a net loss, only dividends (if any) are allocated to participating securities.