Other Comprehensive Income (Loss) (Components of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	$ (24,412)	$ 26,725	$ (5,478)	$ (26,965)
Total other comprehensive income (loss), Tax	(947)	(1,036)	(1,896)	(2,073)
Other comprehensive income (loss)	(25,359)	25,689	(7,374)	(29,038)
Cumulative translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	(27,043)	23,743	(10,826)	(32,894)
Total other comprehensive income (loss), Tax	0	0	0	0
Other comprehensive income (loss)	(27,043)	23,743	(10,826)	(32,894)
Pension and other postretirement adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	912	1,215	1,905	2,390
Total other comprehensive income (loss), Tax	(321)	(395)	(643)	(790)
Other comprehensive income (loss)	591	820	1,262	1,600
Reclassification adjustments for derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	1,719	1,767	3,443	3,539
Total other comprehensive income (loss), Tax	(626)	(641)	(1,253)	(1,283)
Other comprehensive income (loss)	$ 1,093	$ 1,126	$ 2,190	$ 2,256