INCOME TAXES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes:
REIT Taxable income distributed									100.00%
Income tax expense (benefit) for income and losses attributable to TRSs	$ (594)	$ (6,907)	$ (5,915)	$ 2,581	$ 1,041	$ (7,242)	$ 3,262	$ 564	$ (10,835)	$ (2,375)	$ 6,982
Taxable REIT Subsidiary
Income Taxes:
Income tax expense (benefit) for income and losses attributable to TRSs									$ (10,800)	$ (2,400)	$ 7,000