Changes in Other Comprehensive Loss (Narrative) (Details) $ in Thousands		3 Months Ended
		Jun. 30, 2015 USD ($)
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax		$ (92,448)
Other comprehensive income (loss) before reclassification		3,859
Amounts reclassified from other comprehensive loss		583
Net current period other comprehensive income (loss)		4,442
Ending balance		(88,006)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax		859
Other comprehensive income (loss) before reclassification		(181)
Amounts reclassified from other comprehensive loss		4
Net current period other comprehensive income (loss)		(177)
Ending balance		682
Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax		(68,139)
Other comprehensive income (loss) before reclassification		(785)
Amounts reclassified from other comprehensive loss		612
Net current period other comprehensive income (loss)		(173)
Ending balance		(68,312)
Foreign currency exchange gain
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax		(24,635)
Other comprehensive income (loss) before reclassification		4,674
Net current period other comprehensive income (loss)		4,674
Ending balance		(19,961)
Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax		(533)
Other comprehensive income (loss) before reclassification		151
Amounts reclassified from other comprehensive loss		(33)
Net current period other comprehensive income (loss)		118
Ending balance		(415)
Investment income | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss		6
Tax expense | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss		2
Tax expense | Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss		330
Tax expense | Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss		18
Cost of products sold | Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	[1]	942
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		$ (51)

[1] These AOCL components are included in the computation of net periodic pension cost. (See Note 9 — Net Periodic Benefit Cost for additional details.)