EARNINGS PER COMMON SHARE - Computation of Basic and Diluted 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 attributable to common stockholders	$ 23,282	$ 35,218	$ 29,255	$ 288,708
Denominator
Basic weighted average common shares and common equivalents (in shares)	190,650,400	178,317,769	183,578,254	178,309,127
Dilutive restricted stock units (in shares)	1,301,989	623,444	1,120,157	420,726
Diluted weighted average common shares (in shares)	191,952,389	178,941,213	184,698,411	178,729,853
Net income attributable to common stockholders, per:
Basic common share (in dollars per share)	$ 0.12	$ 0.20	$ 0.16	$ 1.62
Diluted common share (in dollars per share)	$ 0.12	$ 0.20	$ 0.16	$ 1.62