EARNINGS PER SHARE ("EPS") - Computation of Basic and Diluted Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Numerator:
Net income (loss) attributable to common stockholders										$ 322,696		$ (14,298)		$ 377,813
Redeemable preferred stock dividends declared on dilutive shares										2,804		0		9
Diluted net income (loss) attributable to common stockholders										$ 325,500		$ (14,298)		$ 377,822
Denominator:
Basic weighted average shares of common stock outstanding (in shares)	[1]									14,598		14,597		23,021
Effect of dilutive securities—contingently issuable shares (in shares)										1,895		0		2
Diluted weighted average shares and common stock equivalents outstanding (in shares)		14,599	14,599	15,284	15,245	14,598	14,598	14,597	14,595	16,493	[1]	14,597	[1]	23,023	[1]
Net income (loss) attributable to common stockholders per share:
Basic (in usd per share)	[1]									$ 22.11		$ (0.98)		$ 16.41
Diluted (in usd per share)	[1]									$ 19.74		$ (0.98)		$ 16.41

[1] All share and per share amounts have been adjusted to give retroactive effect to the one-for-three reverse stock split of our common stock effected on September 3, 2019.