Income Taxes Schedule of income tax expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Federal	$ (4,231)	$ (3,742)	$ 3,854
State	116	(56)	729
Foreign	688	1,732	2,865
Total current	(3,427)	(2,066)	7,448
Federal	3,020	6,224	(4,284)
State	545	4,417	(822)
Foreign	(36)	(24)	(201)
Total deferred	3,529	10,617	(5,307)
Income tax expense	$ 102	$ 8,551	$ 2,141