Changes in Other Comprehensive Loss (Narrative) (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2021 USD ($)
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	$ (59,986)
Other comprehensive income (loss) before reclassification	525
Amounts reclassified from other comprehensive loss	1,550
Net current period other comprehensive income (loss)	2,075
Ending balance net of tax	(57,911)
Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	(37,356)
Other comprehensive income (loss) before reclassification	(331)
Amounts reclassified from other comprehensive loss	234
Net current period other comprehensive income (loss)	(97)
Ending balance net of tax	(37,453)
Foreign currency exchange (gain) loss
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	(21,776)
Other comprehensive income (loss) before reclassification	2,076
Amounts reclassified from other comprehensive loss	0
Net current period other comprehensive income (loss)	2,076
Ending balance net of tax	(19,700)
Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	1,737
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	1,316
Tax expense | Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	(81)
Tax expense | Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	(421)
Cost of products sold | Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	315
Cost of products sold | Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	(5)
Interest Expense [Member] | Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	442
Foreign currency exchange (gain) loss | Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	1,300
Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	(854)
Other comprehensive income (loss) before reclassification	(1,220)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	1,316
Net current period other comprehensive income (loss)	96
Ending balance net of tax	$ (758)