EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net income	$ 11,626	$ 38,001	$ 73,595	$ 85,369
Less: Preferred dividends	(3,710)	(3,710)	(11,128)	(12,962)
Premium on redemption of preferred stock	0	0	0	(3,277)
Allocation to participating securities	(81)	(122)	(254)	(249)
Attributable to non-controlling interest in Operating Partnership	(15)	(100)	(150)	(204)
Attributable to non-controlling interest in joint venture	(77)	0	(77)	0
Net income attributable to common stockholders, net of amount allocated to participating securities	$ 7,743	$ 34,069	$ 61,986	$ 68,677
Denominator:
Weighted average common shares outstanding - basic (in shares)	103,935,000	103,666,000	103,861,000	103,603,000
Dilutive effect of equity-based compensation awards (in shares)	35,000	155,000	55,000	265,000
Weighted average common shares outstanding - diluted (in shares)	103,970,000	103,821,000	103,916,000	103,868,000
Basic and diluted (in dollars per share)	$ 0.07	$ 0.33	$ 0.60	$ 0.66
Restricted Stock Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of diluted earnings per share (in shares)	755,991	453,664	755,991	453,664