EARNINGS (LOSS) PER SHARE - Schedule of Basic and Diluted Earnings (Loss) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income (loss)	$ 35,476	$ 31,816	$ (2,861)	$ 1,663	$ (7,668)	$ (19,910)	$ 64,431	$ (25,915)
Denominator:
Weighted average number of common shares outstanding (in shares)	179,872,000			184,232,000			179,841,000	179,220,000
Effect of dilutive securities (in shares)	1,558,000			590,000			1,214,000	0
Weighted average common shares outstanding, diluted (in shares)	181,430,000			184,822,000			181,055,000	179,220,000
Earnings (loss) per common share:
Earnings (loss) per share, basic (in dollars per share)	$ 0.20			$ 0.01			$ 0.36	$ (0.14)
Earnings (loss) per share, diluted (in dollars per share)	$ 0.20			$ 0.01			$ 0.36	$ (0.14)
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded (in shares)	457,754			915,507			915,507	2,328,120
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded (in shares)	496,929			296,876			387,656	424,878
Restricted Stock Award
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded (in shares)	38,536			312,984			272,540	600,483