EARNINGS PER SHARE - (Information Related to EPS Calculation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income (loss)
Net income	$ (3,173)	$ 74,295	$ 57,726
Net (income) loss attributable to noncontrolling interests	(22,981)	(339)	(714)
Net income (loss) attributable to common stockholders	$ (26,154)	$ 73,956	$ 57,012
Shares
Weighted average basic common shares outstanding (in shares)	52,522	43,136	43,036
Restricted stock and stock options (in shares)	0	168	201
Warrants (in shares)	0	4	0
Weighted average diluted common shares outstanding (in shares)	52,522	43,308	43,237
Earnings Per Share, Basic and Diluted [Abstract]
Basic income per share: (in dollars per share)	$ (0.50)	$ 1.71	$ 1.32
Diluted income per share: (in dollars per share)	$ (0.50)	$ 1.71	$ 1.32