EARNINGS PER COMMON SHARE - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator
Net income attributable to common stockholders	$ 60,034	$ 69,171	$ 36,710
Denominator
Basic weighted average common shares (in shares)	65,284,251	62,235,014	46,351,544
Dilutive stock options and restricted stock units (in shares)	236,421	225,225	537,987
Dilutive weighted average common shares (in shares)	65,520,672	62,460,239	46,889,531
Net income attributable to common stockholders, per:
Basic common share (in dollars per share)	$ 0.92	$ 1.11	$ 0.79
Diluted common share (in dollars per share)	$ 0.92	$ 1.11	$ 0.78