Income Taxes (Schedule Of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Taxes [Abstract]
Federal - Current			$ (1,280)	$ (164)
Foreign - Current			6,039	(2,340)
State - Current			275	238
Deferred			1,505	2,577
Total income tax expense (benefit)	$ 1,919	$ (5,768)	$ 6,539	$ 311