Other Comprehensive Income (Loss) (Components of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	$ 6,287	$ (19,729)	$ (1,087)	$ (48,767)
AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	7,227	(18,698)	1,749	(45,663)
Total other comprehensive income (loss), Tax	(940)	(1,031)	(2,836)	(3,104)
Other comprehensive income (loss)	6,287	(19,729)	(1,087)	(48,767)
Cumulative translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	4,611	(21,661)	(6,215)	(54,555)
Total other comprehensive income (loss), Tax	0	0	0	0
Other comprehensive income (loss)	4,611	(21,661)	(6,215)	(54,555)
Pension and other postretirement adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	915	1,215	2,820	3,605
Total other comprehensive income (loss), Tax	(321)	(397)	(964)	(1,187)
Other comprehensive income (loss)	594	818	1,856	2,418
Reclassification adjustments for derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	1,701	1,748	5,144	5,287
Total other comprehensive income (loss), Tax	(619)	(634)	(1,872)	(1,917)
Other comprehensive income (loss)	$ 1,082	$ 1,114	$ 3,272	$ 3,370