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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator
Net income attributable to common stockholders	$ 22,776	$ 15,500	$ 39,419	$ 46,664
Denominator
Basic weighted average common shares and common equivalents (in shares)	65,312,288	65,160,290	65,285,591	61,244,991
Dilutive restricted stock units (in shares)	279,140	237,885	184,998	223,612
Diluted weighted average common shares (in shares)	65,591,428	65,398,175	65,470,589	61,468,603
Net income attributable to common stockholders, per:
Basic common share (in dollars per share)	$ 0.35	$ 0.24	$ 0.60	$ 0.76
Diluted common share (in dollars per share)	$ 0.35	$ 0.24	$ 0.60	$ 0.76