INCOME TAXES INCOME TAXES (Provision) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal									$ 280	$ 75	$ 210
State									1,264	293	385
Foreign									34	44	68
Total current									1,578	412	663
Deferred:
Federal									7,311	1,808	3,777
State									410	(324)	(36)
Foreign									(2)	(1)	0
Total deferred									7,719	1,483	3,741
Total provision (benefit) for income taxes	$ 1,119	$ (543)	$ (243)	$ 8,964	$ (1,879)	$ (15)	$ 1,849	$ 1,940	$ 9,297	$ 1,895	$ 4,404