Comprehensive Income (Loss) (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Accumulated other comprehensive income (loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		$ (59,277)
Accumulated Other Comprehensive Income (Loss), Net of Tax		(61,512)
Accumulated Other Comprehensive Loss
Accumulated other comprehensive income (loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(59,277)	$ (55,737)
Other comprehensive income (loss) before reclassifications, net of tax		(2,706)	880
Amounts reclassified from other accumulated comprehensive income (loss) before tax	[1]	619	(4,033)
Reclassification from AOCI, Current Period, Tax		(148)	975
Net current-period other comprehensive income (loss)		(2,235)	(2,178)
Accumulated Other Comprehensive Income (Loss), Net of Tax		(61,512)	(57,915)
Cash Flow Hedging Gain (Loss)
Accumulated other comprehensive income (loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		493	4,085
Other comprehensive income (loss) before reclassifications, net of tax		(1,916)	5,120
Amounts reclassified from other accumulated comprehensive income (loss) before tax	[1]	(1,496)	(6,193)
Reclassification from AOCI, Current Period, Tax		362	1,496
Net current-period other comprehensive income (loss)		(3,050)	423
Accumulated Other Comprehensive Income (Loss), Net of Tax		(2,557)	4,508
Pension Liability
Accumulated other comprehensive income (loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(31,691)	(31,718)
Other comprehensive income (loss) before reclassifications, net of tax		0	0
Amounts reclassified from other accumulated comprehensive income (loss) before tax	[1]	2,115	2,160
Reclassification from AOCI, Current Period, Tax		(510)	(521)
Net current-period other comprehensive income (loss)		1,605	1,639
Accumulated Other Comprehensive Income (Loss), Net of Tax		(30,086)	(30,079)
Cumulative Translation Adjustments
Accumulated other comprehensive income (loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(28,079)	(28,104)
Other comprehensive income (loss) before reclassifications, net of tax		(790)	(4,240)
Amounts reclassified from other accumulated comprehensive income (loss) before tax	[1]	0	0
Reclassification from AOCI, Current Period, Tax		0	0
Net current-period other comprehensive income (loss)		(790)	(4,240)
Accumulated Other Comprehensive Income (Loss), Net of Tax		$ (28,869)	$ (32,344)

[1] The cash flow hedging gain (loss) and pension liability accumulated other comprehensive income (loss) components are included in sales or cost of sales and as a component of net periodic pension cost, respectively. Refer to Note 6 and Note 12, respectively, for further details.