Stockholders' Equity (Details)	3 Months Ended		9 Months Ended
	Dec. 31, 2015 vote $ / shares shares	Dec. 31, 2014 shares	Dec. 31, 2015 vote $ / shares shares	Dec. 31, 2014 $ / shares shares	Mar. 31, 2015 $ / shares shares
Class of Stock [Line Items]
Common stock, shares authorized (shares) | shares	250,000,000		250,000,000		250,000,000
Common stock, par value (in USD per share) | $ / shares	$ 0.01		$ 0.01		$ 0.01
Preferred stock, shares authorized (shares) | shares	5,000,000		5,000,000		5,000,000
Preferred stock, par value (in USD per share) | $ / shares	$ 0.01		$ 0.01		$ 0.01
Voting rights, number of votes per common share owned | vote	1		1
Restricted Shares
Class of Stock [Line Items]
Restricted stock repurchased during period (shares) | shares	0	781	39,429	48,445
Restricted stock acquired, average cost per share (in USD per share) | $ / shares			$ 41.66	$ 33.66