INCOME TAXES - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
State									$ (39)	$ 93	$ 12
Federal									0	0	0
Foreign									638	337	375
Total current									599	430	387
Deferred:
State									0	(1)	6
Federal									12	12	33
Foreign									(259)	0	0
Total deferred									(247)	11	39
Total income tax provision	$ (70)	$ 215	$ 99	$ 108	$ 205	$ 81	$ 135	$ 20	$ 352	$ 441	$ 426