Comprehensive Income - Schedule of Accumulated 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]
AOCI beginning balance			$ (130,233)
AOCI ending balance	$ (210,334)		(210,334)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
AOCI beginning balance	(57,421)	$ (51,857)	(98,239)	$ (25,122)
Other comprehensive income (loss) before reclassifications	(122,251)	29,610	(81,433)	2,875
Net current-period other comprehensive income (loss)	(122,251)	29,610	(81,433)	2,875
AOCI ending balance	(179,672)	(22,247)	(179,672)	(22,247)
Pension Plan and SERP Liability Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
AOCI beginning balance	(31,328)	(32,105)	(31,994)	(32,769)
Amounts reclassified from AOCI	666	728	1,332	1,392
Net current-period other comprehensive income (loss)	666	728	1,332	1,392
AOCI ending balance	$ (30,662)	$ (31,377)	$ (30,662)	$ (31,377)