INCOME TAXES - Reconciliation of Provision for Federal Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective federal income tax rate percentage	35.00%	35.00%
Expected income tax benefit at 35%	$ (5,583)	$ (962)
Tax effect of valuation allowance on deferred tax assets	(1,878)	2,850
Tax effect of valuation allowance on deferred tax assets	7,115	414
Effects of differences between U.S. and foreign tax rates, net of federal benefit	6,020	(917)
Foreign withholding and AMT	667	1,501
Rate changes	(285)	0
Rate changes	0	(193)
Total provision for income taxes	$ 6,056	$ 2,693