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

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Derivative Instruments (Pretax effect of derivative instruments on the condensed consolidated statement of operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Designated as Hedging Instrument \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	$ (103)	$ (212)	$ (197)	$ (418)
Designated as Hedging Instrument \| Foreign exchange contracts \| Cost of products sold
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(2)	11	(100)	39
Designated as Hedging Instrument \| Interest Rate Swap [Member] \| Cost of products sold
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	492	407	1,367	(864)
Designated as Hedging Instrument \| Interest Rate Swap [Member] \| Interest Expense [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	130	112	248	(516)
Designated as Hedging Instrument \| Cross Currency Interest Rate Contract [Member] \| Cost of products sold
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	634	(6,049)	9,647	(15,493)
Designated as Hedging Instrument \| Cross Currency Interest Rate Contract [Member] \| Foreign currency exchange gain/loss
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	1,438	(5,891)	11,377	(18,176)
Derivatives Not Designated as Hedging Instruments \| Foreign exchange contracts \| Foreign currency exchange gain/loss
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (41)	$ 11	$ (7)	$ 12