Income Taxes (Significant Components Of The Provision For Income Taxes Table) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
Federal	$ (9,980)	$ 5,571	$ 11,488
State	(487)	1,540	1,491
Foreign	1,583	1,339	3,339
Total current	(8,884)	8,450	16,318
Federal	2,555	(12,016)	(2,321)
State	706	(2,014)	(122)
Foreign	114	(552)	(471)
Total deferred	3,375	(14,582)	(2,914)
Total income tax (benefit) expense	$ (5,509)	$ (6,132)	$ 13,404