EARNINGS PER COMMON SHARE - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator
Net income attributable to common stockholders	$ 83,677	$ 193,580	$ 5,973	$ 253,490
Denominator
Basic weighted average common shares and common equivalents (in shares)	181,567,464	178,314,750	179,984,959	178,304,733
Dilutive restricted stock units (in shares)	686,636	369,274	652,100	296,056
Diluted weighted average common shares (in shares)	182,254,100	178,684,024	180,637,059	178,600,789
Net income attributable to common stockholders, per:
Basic common share (in dollars per share)	$ 0.46	$ 1.09	$ 0.03	$ 1.42
Diluted common share (in dollars per share)	$ 0.46	$ 1.08	$ 0.03	$ 1.42