Derivative Instruments And Hedging Activities (Effect On Earnings) (Details) (Interest Rate Swap [Member], Fair Value Hedging [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Increase (decrease) in fair value of interest rate fair value hedging instruments	$ (2,500)
Increase (decrease) in fair value of hedged item in interest rate fair value hedge	2,500
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Increase (decrease) in fair value of interest rate fair value hedging instruments	(2,490)	(4,244)	1,648
Increase (decrease) in fair value of hedged item in interest rate fair value hedge	2,496	4,273	(1,597)
Amount of gain (loss) recognized in pre-tax income	$ 6	$ 29	$ 51