Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Statements Of Income) (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Cash Flow Hedges [Member] \| Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 5,100
Derivatives Designated As Hedges [Member] \| Cash Flow Hedges [Member] \| Interest Rate Swap [Member] \| Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recorded in accumulated other comprehensive loss	(7,496)	$ 4,869	$ 8,999
Gain (loss) reclassified from accumulated other comprehensive loss into earnings	1,689	(1,244)	(3,916)
Derivatives Designated As Hedges [Member] \| Cash Flow Hedges [Member] \| Interest Rate Swap [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
Derivatives Designated As Hedges [Member] \| Cash Flow 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	(2,623)	(1,204)	454
Gain (loss) reclassified from accumulated other comprehensive loss into earnings	(3,034)	(1,099)	945
Derivatives Designated As Hedges [Member] \| Cash Flow 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	(5)	246
Derivatives Not Designated As Hedges [Member] \| Forward Foreign Currency Exchange Contracts [Member] \| Selling, General And Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (4,671)	$ (234)	$ (2,591)

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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