Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Statutory tax rate, percentage	35.00%	35.00%	35.00%
Net current deferred tax assets		$ 10,014
Undistributed earnings of foreign subsidiaries	$ 28,830
Cash held in foreign operations	29,261
Deferred tax assets, net of operating losses	2,571
Deferred tax assets, net of operating losses	$ 30,383
Minimum
Income Taxes [Line Items]
Statute of limitations expiration period, in years	4 years
Net operating loss carry forwards, expiration years	Dec. 31, 2016
Minimum | Germany
Income Taxes [Line Items]
Tax examination, years	2009
Maximum
Income Taxes [Line Items]
Statute of limitations expiration period, in years	10 years
Net operating loss carry forwards, expiration years	Dec. 31, 2025
Maximum | Germany
Income Taxes [Line Items]
Tax examination, years	2012