Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Tax at federal statutory rate	$ 10,382	$ 8,968	$ 4,490
Foreign income taxed at different rates	(15,210)	(10,788)	(8,383)
Federal tax effect of dividend from foreign subsidiary	4,317
Effect of uncertain tax positions	(126)	127	297
Change in valuation allowance	1,092	2,672	5,254
Stock-based compensation	(86)	2	(87)
Non deductible expenses	189	189	670
Other	249	(1)	1
Provision for income tax	$ 807	$ 1,169	$ 2,242