Earnings and Net Income (Loss) per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Basic net income (loss) per common share
Net income	$ 4,429	$ 11,534
Weighted-average common shares outstanding	32,103,274	31,943,534
Basic net income (loss) per common share (in dollars per share)	$ 0.14	$ 0.36
Diluted net income (loss) per common share
Net income	$ 4,429	$ 11,534
Weighted-average common shares outstanding	32,103,274	31,943,534
Diluted (in shares)	32,492,004	32,339,937
Diluted net income (loss) per common share (in dollars per share)	$ 0.14	$ 0.36
Equity Option
Diluted net income (loss) per common share
Weighted Average Number Diluted Shares Outstanding Adjustment	253,895	298,948
Restricted Stock Units
Diluted net income (loss) per common share
Weighted Average Number Diluted Shares Outstanding Adjustment	134,835	97,455
Stock Compensation Plan
Diluted net income (loss) per common share
Antidilutive securities excluded from computation of earnings per share, amount	69,613	49,193