Income Taxes (Provision (Benefit) For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
U.S. Federal - Current	$ 85	$ 84	$ (13)
U.S. Federal - Deferred	0	0	0
Provision for U.S. federal income taxes	85	84	(13)
Foreign - Current	1,898	2,875	1,931
Foreign - Deferred	(196)	(1,305)	(411)
Provision for foreign income taxes	1,702	1,570	1,520
Total provision for income taxes	$ 1,787	$ 1,654	$ 1,507