Indebtedness (Senior Subordinated Notes Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Senior Subordinated Notes [Member]	Dec. 31, 2013 7.125% Senior Subordinated Notes Maturing 2018 [Member] Senior Subordinated Notes [Member]	Dec. 31, 2013 7.125% Senior Subordinated Notes Maturing 2018 [Member] Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Subordinated Debt					$ 215,446
Debt Instrument, Interest rate						7.125%	7.125%
Debt Instrument, Maturity Date							Oct. 01, 2018
First scheduled optional redemption date							Oct. 01, 2013
Debt Instrument, Redemption Date							Oct. 02, 2013
Debt Instrument, Redemption Price, Percentage							103.563%
Loss on the extinguishment of debt	$ (9,150)	$ 0	$ (9,150)	$ 0		$ 9,100