Income Taxes (Pre-Tax Income and Applicable Tax Rates) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pre-Tax Income and Applicable Tax Rates [Line Items]
Income Tax Expense (Benefit)	$ 7,106	$ 13,894	$ 10,878
US	1,384	8,807	5,497
Pre-tax income, Foreign	85,255	68,645	64,655
Total	$ 86,639	$ 77,452	$ 70,152
Effective Income Tax Rate Reconciliation, Percent	8.10%	17.90%	15.50%