Share-based Compensation - Stock Options Rollforward (Details) (Stock Options [Member], USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2014
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Options, Outstanding at beginning of period	1,318,000
Number of Options, Granted	0
Number of Options, Exercised	(645,500)
Number of Options, Cancelled/expired	(45,000)
Number of Options, Outstanding and exercisable at end of period	627,500
Weighted Average Exercise Price, Outstanding at beginning of period	$ 14.07
Weighted Average Exercise Price, Granted	$ 0.00
Weighted-Average Exercise Price, Exercised	$ 12.50
Weighted-Average Exercise Price, Cancelled/Expired	$ 20.19
Weighted Average Exercise Price, Outstanding and exercisable at end of period	$ 15.26
Remaining Contractual Term, Outstanding and exercisable at end of period	1 year 11 months 23 days
Aggregate Intrinsic Value, Outstanding and exercisable at end of period	$ 16