Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Interest Rate Lock Commitments [Member]	Sep. 30, 2010 Cash Flow Hedging [Member] Interest Rate Lock Commitments [Member]	Jul. 30, 2010 Cash Flow Hedging [Member] Interest Rate Lock Commitments [Member]	Dec. 31, 2013 Fair Value Hedging [Member] Interest Rate Swap [Member] derivative_instruments	Dec. 31, 2013 Reclassification out of Accumulated Other Comprehensive Income [Member] Interest Rate Lock Commitments [Member]	Dec. 31, 2012 Reclassification out of Accumulated Other Comprehensive Income [Member] Interest Rate Lock Commitments [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount							$ 100,000,000	$ 300,000,000
Derivative, Maturity date						Sep. 01, 2010		Oct. 01, 2013
Other comprehensive income (loss), derivatives qualifiying as hedges, before tax						(2,600,000)
Other comprehensive income (loss), derivatives qualifying as hedges, net of tax						(1,600,000)
Amounts reclassified from AOCI									388,000	388,000
Gross amount of existing losses recorded in 'Accumulated other comprehensive income (loss), ' to be reclassified during the next 12 months					517,000
Net amount of existing losses recorded in 'Accumulated other comprehensive income (loss)', to be reclassified during the next 12 months, net of tax					326,000
Number of interest rate derivatives held								5
Derivative, Amount of Hedged Item								300,000,000
Change in fair value of variable interest rate swaps								(2,500,000)
Change in carrying value of 2013 Notes								$ (2,500,000)
Fair Value Hedge Ineffectiveness is Immaterial	The net gain or loss recorded in earnings as a result of hedge ineffectiveness related to the designated fair value hedges was immaterial	The net gain or loss recorded in earnings as a result of hedge ineffectiveness related to the designated fair value hedges was immaterial	The net gain or loss recorded in earnings as a result of hedge ineffectiveness related to the designated fair value hedges was immaterial	The net gain or loss recorded in earnings as a result of hedge ineffectiveness related to the designated fair value hedges was immaterial