INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Significant new tax positions resulted in increase in current year	$ 0	$ 0	$ 0
Significant new tax positions resulted in reversal of prior year tax positions	0	0	$ 0
Tax position for which significant change in unrecognized tax benefits is reasonably possible	0
Taxes Payable, Noncurrent
Income Tax Contingency [Line Items]
Total gross unrecognized tax benefit	$ 1,432	$ 699