EARNINGS PER SHARE - Summary of Components Used to Calculate Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net (loss) income	$ (10,905)	$ (4,239)	$ (20,569)	$ (32,871)	$ (44,708)	$ (35,775)	$ (52,548)	$ (16,214)	$ (68,584)	$ (149,245)	$ 82,348
Less: Preferred dividends									(15,431)	(14,838)	(14,838)
Premium on redemption of preferred stock									(2,710)	0	0
Allocation to participating securities									0	(81)	(309)
Attributable to non-controlling interest in Operating Partnership									115	271	(157)
Attributable to non-controlling interest in joint venture									2,896	5,635	419
Net (loss) income attributable to common stockholders									$ (83,714)	$ (158,258)	$ 67,463
Denominator:
Weighted average common shares outstanding - basic									104,471	104,141	103,887
Dilutive effect of equity-based compensation awards									0	0	52
Weighted average common shares outstanding - diluted									104,471	104,141	103,939
Basic (in shares)	$ (0.15)	$ (0.10)	$ (0.21)	$ (0.34)	$ (0.45)	$ (0.37)	$ (0.52)	$ (0.18)	$ (0.80)	$ (1.52)	$ 0.65
Diluted (in shares)	$ (0.15)	$ (0.10)	$ (0.21)	$ (0.34)	$ (0.45)	$ (0.37)	$ (0.52)	$ (0.18)	$ (0.80)	$ (1.52)	$ 0.65