TAX CREDITS RECEIVABLE, NET - Summary of Changes in Carrying Value of Tax Credits Receivable, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Tax Credit Receivable Net [Abstract]
Balance at beginning of year	$ 13,198	$ 19,089
Monetized in period		(2,748)
Tax credits used to offset production taxes	(1,094)	(1,443)
Reserve for potential monetization		(1,700)
Balance at end of year	$ 12,104	$ 13,198