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, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator
Net income attributable to common stockholders	$ 193,580	$ 17,960	$ 253,490	$ 34,222
Denominator
Basic weighted average common shares and common equivalents (in shares)	178,314,750	65,438,739	178,304,733	65,396,146
Dilutive restricted stock units (in shares)	369,274	232,114	296,056	297,873
Diluted weighted average common shares (in shares)	178,684,024	65,670,853	178,600,789	65,694,019
Net income attributable to common stockholders, per:
Basic common share (in dollars per share)	$ 1.09	$ 0.27	$ 1.42	$ 0.52
Diluted common share (in dollars per share)	$ 1.08	$ 0.27	$ 1.42	$ 0.52