EARNINGS PER COMMON SHARE - Schedule of the Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator
Net income attributable to common stockholders	$ 17,960	$ 34,915	$ 34,222	$ 16,643
Denominator
Basic weighted average common shares and common equivalents (in shares)	65,438,739	65,303,057	65,396,146	65,274,845
Dilutive restricted stock units (in shares)	232,114	200,326	297,873	179,492
Diluted weighted average common shares (in shares)	65,670,853	65,503,383	65,694,019	65,454,337
Net income attributable to common stockholders, per:
Basic common share (in dollars per share)	$ 0.27	$ 0.53	$ 0.52	$ 0.25
Diluted common share (in dollars per share)	$ 0.27	$ 0.53	$ 0.52	$ 0.25