Income Taxes (Components of Income Tax Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 0	$ (1,126)	$ (3,325)
State	97	587	(126)
Foreign	(740)	488	(526)
Total current	(643)	(51)	(3,977)
Deferred:
Federal	(6,585)	5,994	1,904
State	(89)	214	(85)
Foreign	101	(45)	(46)
Total deferred	(6,573)	6,163	1,773
Income tax (benefit) expense	$ (7,216)	$ 6,112	$ (2,204)