Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Statements Of Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivatives Designated As Hedges [Member] | Interest Rate Swap Agreements [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recorded in accumulated other comprehensive loss	$ 2,012	$ (9,732)	$ (2,392)	$ (6,056)
Gain (loss) reclassified from accumulated other comprehensive loss into earnings	(1,055)	(1,341)	(2,148)	(2,676)
Derivatives Designated As Hedges [Member] | Interest Rate Swap Agreements [Member] | Selling, General And Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings from ineffective portion and early de-designation of cash flow hedges	0	0	0	0
Derivatives Designated As Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Cost Of Goods Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recorded in accumulated other comprehensive loss	0	101	453	1,283
Gain (loss) reclassified from accumulated other comprehensive loss into earnings	654	344	668	358
Derivatives Designated As Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Selling, General And Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings from ineffective portion and early de-designation of cash flow hedges	0	(673)	246	745
Derivatives Not Designated As Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Selling, General And Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings	$ 113	$ 10,524	$ (1,356)	$ 8,380