Income Taxes (Schedule Of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Federal	$ (2,083)	$ 3,005	$ 2,032
State	(4)	62	37
Foreign	1,372	1,954	1,783
Current income tax expense (benefit)	(715)	5,021	3,852
Federal	5,406	930	2,777
State	19	247	(469)
Foreign	(458)	993	897
Deferred income tax expense (benefit)	4,967	2,170	3,205
Total income tax expense (benefit)	$ 4,252	$ 7,191	$ 7,057