Share Based Awards (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Sep. 30, 2014	Mar. 31, 2013
Summary of Stock Option Activity
Number of Shares Outstanding Beginning Balance	1,370,101
Weighted Average Exercise Price per Share Outstanding Beginning Balance	$ 27.85
Weighted Average Remaining Contractual Life Outstanding Beginning Balance (in years)	6 years	5 years 9 months 22 days
Number of Share Granted	459,650
Weighted Average Exercise Price per Share Granted	$ 15.97
Weighted Average Remaining Contractual Life Granted (in years)	7 years 8 months 15 days
Number of Shares Forfeited/Canceled	(96,875)
Weighted Average Exercise Price per Share Forfeited/Canceled	$ 24.59
Weighted Average Remaining Contractual Life Forfeited/Canceled (in years)	4 years 9 months 22 days
Number of Shares Outstanding Ending Balance	1,732,876
Weighted Average Exercise Price per Share Outstanding Ending Balance	$ 24.88
Weighted Average Remaining Contractual Life Outstanding Ending Balance (in years)	6 years	5 years 9 months 22 days
Aggregate Intrinsic Value Outstanding Ending Balance	$ 0
Number of Shares Vested and expected to vest	1,630,239
Weighted Average Exercise Price per Share Vested and expected to vest	$ 25.07
Weighted Average Remaining Contractual Life Vested and expected to vest (in years)	5 years 11 months
Aggregate Intrinsic Value Vested and expected to vest	0
Number of Shares Exercisable	564,231
Weighted Average Exercise Price per Share Exercisable	$ 30.82
Weighted Average Remaining Contractual Life Exercisable (in years)	4 years 8 months 12 days
Aggregate Intrinsic Value Exercisable	$ 0