Stockholders' Equity - Share Repurchases (Details) - USD ($)	9 Months Ended	12 Months Ended
	Dec. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Oct. 29, 2015	Aug. 04, 2015	Mar. 11, 2015
Equity [Abstract]
The limit of repurchase of common stock authorized.				$ 250,000,000	$ 100,000,000	$ 75,000,000
Number of shares authorized to be repurchased				3,250,000	1,400,000	1,000,000
Number of shares repurchased	1,008,445	0	609,922
Value of shares repurchased	$ 75,795,000	$ 0	$ 52,130,000