Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at the beginning of the period	$ 12,456	$ 17,549	$ 24,918
Additions for tax positions related to the current year (includes currency translation adjustment)	(483)	288	500
Additions for tax positions related to prior years (includes currency translation adjustment)	1,249	156	145
Other reductions for tax positions related to prior years	7,846	3,056	3,050
Statutes of limitations expirations	173	2,481	3,348
Settlements	42	0	1,616
Balance at the end of the period	5,161	12,456	17,549
Reconciliation of Deferred Income Tax Benefits [Roll Forward]
Balance at beginning of period	(112)	(198)	(369)
Additions for tax positions related to the current year (includes currency translation adjustment)	(2)	(2)	(5)
Additions for tax positions related to prior years (includes currency translation adjustment)	(4)	(55)	(4)
Other reductions for tax positions related to prior years	0	0	0
Statutes of limitation expirations	59	143	180
Settlements	15	0	0
Balance at the end of the period	(44)	(112)	(198)
Reconciliation of Net Unrecognized Tax Benefits [Roll Forward]
Balance at the beginning of the period	5,117	12,344	17,351	$ 5,117	$ 24,549
Additions for tax positions related to the current year (includes currency translation adjustment)	(485)	286	495
Additions for tax positions related to prior years (includes currency translation adjustment)	1,245	101	141
Other reductions for tax positions related to prior years	(7,846)	(3,056)	(3,050)
Statutes of limitation expirations	(114)	(2,338)	(3,168)
Settlements	(27)	0	(1,616)
Balance at the end of the period	5,117	$ 12,344	$ 17,351
Portion of UTB, expected to be recognized upon settlement of tax examinations and the expiration of various statutes of limitations within next twelve months				$ 2,300
Foreign jurisdiction
Reconciliation of Net Unrecognized Tax Benefits [Roll Forward]
Decrease related to previously unrecognized tax benefits that were recognized in 2012 due to change in enacted legislation	$ (7,800)