INCOME TAXES - Expected And Reported Income Taxes (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Income taxes (benefit)	$ 2,909	$ 7,553	$ (4,921)	$ 16,097
Effective income tax rate	41.50%	39.80%	131.70%	37.60%
Impairment loss	$ 0	$ 0	$ 441	$ 62
IncomeTaxExpenseBenefitIntraperiodTaxAllocation			$ 800