INCOME TAXES - Expected And Reported Income Taxes (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal statutory income tax rate	31.70%		32.60%
Estimated Annual Tax Rate Before Discrete Items, Minimum			30.00%
Estimated Annual Tax Rate Before Discrete Items, Maximum			32.00%
Income taxes (benefit)	$ 12,045	$ 249	$ 14,083	$ (3,260)
Effective income tax rate		13.50%		20.50%
Impairment loss	$ 0	$ 28,988	$ 0	$ 28,988