EARNINGS PER SHARE - (Information Related to EPS Calculation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net income	$ 10,516	$ 7,996	$ 19,295	$ 158,731
Net income attributable to noncontrolling interests	(12)	(23)	(12)	(23)
Net income attributable to common stockholders	$ 10,504	$ 7,973	$ 19,283	$ 158,708
Denominator:
Weighted average basic common shares outstanding	42,845	39,502	40,860	39,489
Numerator:
Net income attributable to common stockholders	$ 10,504	$ 7,973	$ 19,283	$ 158,708
Denominator:
Weighted average basic common shares outstanding	42,845	39,502	40,860	39,489
Restricted stock and stock options (in shares)	420	366	455	338
Warrants (in shares)	2	2,892	1,783	2,892
Weighted average diluted common shares outstanding	43,267	42,760	43,098	42,719
Basic income per share: (in dollars per share)	$ 0.25	$ 0.20	$ 0.47	$ 4.02
Diluted income per share: (in dollars per share)	$ 0.24	$ 0.19	$ 0.45	$ 3.72