Changes in Other Comprehensive Loss (Narrative) (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2016 USD ($)
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	$ (94,747)
Other comprehensive income (loss) before reclassification	(4,282)
Amounts reclassified from other comprehensive loss	905
Net current period other comprehensive income (loss)	(3,377)
Ending balance net of tax	(98,124)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	626
Other comprehensive income (loss) before reclassification	122
Amounts reclassified from other comprehensive loss	(61)
Net current period other comprehensive income (loss)	61
Ending balance net of tax	687
Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	(72,824)
Other comprehensive income (loss) before reclassification	(458)
Amounts reclassified from other comprehensive loss	682
Net current period other comprehensive income (loss)	224
Ending balance net of tax	(72,600)
Foreign currency exchange gain/loss
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	(20,985)
Other comprehensive income (loss) before reclassification	(3,586)
Net current period other comprehensive income (loss)	(3,586)
Ending balance net of tax	(24,571)
Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Beginning balance net of tax	(1,564)
Other comprehensive income (loss) before reclassification	(360)
Amounts reclassified from other comprehensive loss	437
Net current period other comprehensive income (loss)	(76)
Ending balance net of tax	(1,640)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	284
Investment income | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	(94)
Tax expense | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	33
Tax expense | Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	(368)
Tax expense | Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	(153)
Cost of products sold | Retirement Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	1,050	[1]
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	(91)
Interest Expense [Member] | Change in Derivatives Qualifying as Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from other comprehensive loss	$ 528

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