Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2012
Income Taxes [Abstract]
Valuation allowance	$ 1,369		$ 460
Unremitted earnings of foreign subsidiaries			12,100
Net increase in unrecognized tax benefit	2,200	$ 1,400
Gross unrecognized tax benefits	$ 7,636	$ 5,459	$ 3,612	$ 4,023