EARNINGS PER COMMON SHARE - Schedule of the Computation of Basic and Diluted Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Numerator
Net income (loss) attributable to common stockholders	$ 16,889	$ (9,864)
Denominator
Basic weighted average common shares (in shares)	59,185,225	38,968,403
Dilutive restricted stock units (in shares)	374,028	0
Diluted weighted average common shares (in shares)	59,559,253	38,968,403
Net income (loss) attributable to common stockholders, per:
Basic common share (in dollars per share)	$ 0.29	$ (0.25)
Diluted common share (in dollars per share)	$ 0.28	$ (0.25)