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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
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	$ 1,119	$ 86	$ 2,675	$ (1,426)
Gain (loss) reclassified from accumulated other comprehensive loss into earnings	441	(353)	732	(917)
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	101	491	(2,930)	(1,101)
Gain (loss) reclassified from accumulated other comprehensive loss into earnings	(529)	(440)	(554)	(442)
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	(2)	0	(5)
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	$ 2,688	$ (140)	$ (2,757)	$ (703)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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-Publisher FASB
-Name Accounting Standards Codification
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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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