Income Taxes Reconciliation of Unrecognized Tax Benefits (Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized Tax Benefits	$ 815	$ 983	$ 2,487	$ 0
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	168	0
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	(131)	(116)	0
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	293	13	14
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(330)	(1,569)	0
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	0	0	0
Unrecognized Tax Benefits, Increase Resulting from Acquisition	0	0	2,473
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 815	$ 983	$ 1,172