Share Based Awards (Details 3) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share Based Compensation Arrangement by Share Based Payment Awards Options Vested in Period Fair Value	$ 2,090	$ 1,697	$ 2,224
Allocated Share-based Compensation Expense	$ 7,598	$ 3,295	$ 3,472
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Non-Vested Number of Shares Outstanding Beginning Balance	1,859,750	1,068,290	991,560
Non-Vested Number of Shares Granted	1,146,500	1,414,000	469,650
Non-Vested Number of Shares Vested	(540,595)	(311,740)	(269,785)
Non-Vested Number of Shares Forfeited	(392,360)	(310,800)	(123,135)
Non-Vested Number of Shares Outstanding Ending Balance	2,073,295	1,859,750	1,068,290
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Fair Value per Share Price Beginning Balance	$ 4.67	$ 5.81	$ 7.73
Weighted-average grant date fair value per share of stock options	5.00	4.44	3.50
Weighted Average Fair Value per Share Price Vested	3.87	5.44	8.24
Weighted Average Fair Value per Share Price Forfeited	4.50	5.45	6.57
Weighted Average Fair Value per Share Price Ending Balance	$ 5.09	$ 4.67	$ 5.81
Employee Share Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated Share-based Compensation Expense	$ 359	$ 291	$ 116
Restricted Stock Units Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated Share-based Compensation Expense	$ 3,691	$ 940	$ 877