SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Income (Loss) per Basic and Diluted Share Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	[1]
Accounting Policies [Abstract]
Net income (loss)	$ 55,894	$ 305	$ 49,578	$ (45,263)
Less change in fair value of in-the-money warrant liabilities	(12,400)	(4,000)	(12,200)
Net income (loss), adjusted for change in fair value of warrants for diluted earnings per share	$ 43,494	$ (3,695)	$ 37,378	$ (45,263)
Weighted average shares outstanding - Basic	92,352	90,563	92,278	88,903
Dilutive effect of 2020 PIPE Warrants	1,895	2,369	2,043
Dilutive effect of stock-based awards	551		543
Diluted	94,798	92,932	94,864	88,903
Net Income (loss) per voting and non-voting share:
Basic	$ 0.61	$ 0.00	$ 0.54	$ (0.51)
Diluted	$ 0.46	$ (0.04)	$ 0.39	$ (0.51)

[1] Potential common shares under the treasury stock method and the if-converted method were antidilutive because the Company reported a an adjusted net loss in this period and the effect of the change in the fair value of warrants was antidilutive. Consequently, the Company did not have any adjustments in this period between basic and diluted loss per share related to stock options, restricted share units and warrants.