Intangible Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite lived intangible assets:
Accumulated amortization	$ (51,578)	$ (45,736)
Total finite lived intangible assets	42,312	48,154
Foreign currency translation adjustment	(2,794)	(1,693)
Total	48,249	55,192
Customer relationship intangibles
Finite lived intangible assets:
Customer relationship intangibles	91,523	91,523
Other intangibles, primarily trade name
Finite lived intangible assets:
Customer relationship intangibles	2,367	2,367
Trade Names
Intangible Assets
Indefinite lived intangible assets	$ 8,731	$ 8,731