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Derivative Instruments (Derivative instruments in the condensed consolidated balance sheet) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019
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	$ 0	$ (94)
Designated as Hedging Instrument \| Foreign exchange contracts \| Accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(100)		$ (96)
Designated as Hedging Instrument \| Foreign exchange contracts \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	50		43
Designated as Hedging Instrument \| Interest Rate Swap [Member] \| Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	0		470
Designated as Hedging Instrument \| Interest Rate Swap [Member] \| Accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(184)		0
Designated as Hedging Instrument \| Interest Rate Swap [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	0		743
Designated as Hedging Instrument \| Interest Rate Swap [Member] \| Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(788)		0
Designated as Hedging Instrument \| Cross Currency Interest Rate Contract [Member] \| Accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(734)		(774)
Designated as Hedging Instrument \| Cross Currency Interest Rate Contract [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	2,005		2,476
Designated as Hedging Instrument \| Cross Currency Interest Rate Contract [Member] \| Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(16,315)		(15,410)
Derivatives Not Designated as Hedging Instruments \| Foreign exchange contracts \| Accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(12)		(17)
Derivatives Not Designated as Hedging Instruments \| Foreign exchange contracts \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	30		$ 0
Foreign currency exchange gain/loss \| Designated as Hedging Instrument \| Cross Currency Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(1,904)	9,939
Foreign currency exchange gain/loss \| Derivatives Not Designated as Hedging Instruments \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net	35	34
Cost of products sold \| Designated as Hedging Instrument \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	1	(98)
Cost of products sold \| Designated as Hedging Instrument \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(1,413)	875
Cost of products sold \| Designated as Hedging Instrument \| Cross Currency Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(1,001)	9,013
Interest Expense [Member] \| Designated as Hedging Instrument \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 247	$ 118