EARNINGS (LOSS) PER SHARE - Schedule of Basic and Diluted Earnings (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net (loss) income	$ 31,816	$ (2,861)	$ (7,668)	$ (19,910)	$ 28,955	$ (27,578)
Denominator:
Weighted average number of common shares outstanding (in shares)	179,843,000		176,711,000		179,826,000	176,686,000
Effect of dilutive securities (in shares)	1,194,000		0		1,149,000	0
Weighted average common shares outstanding, diluted (in shares)	181,037,000		176,711,000		180,975,000	176,686,000
Earnings (loss) per common share:
Earnings (loss) per share, basic (in dollars per share)	$ 0.18		$ (0.04)		$ 0.16	$ (0.16)
Earnings (loss) per share, diluted (in dollars per share)	$ 0.18		$ (0.04)		$ 0.16	$ (0.16)
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded (in shares)	915,507		2,328,120		915,507	2,328,120
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded (in shares)	547,310		497,517		433,440	497,517
Restricted Stock Award
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded (in shares)			562,575			562,575