EARNINGS PER SHARE - Schedule of antidilutive securities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss attributable to common stockholders, basic	$ 33,038	$ (24,895)
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	940	0
Net Income (Loss) Available to Common Stockholders, Diluted	$ 33,978	$ (24,895)
Weighted-average common shares outstanding, basic (in shares)	33,741,000	29,313,000
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	2,701,000	0
Weighted-average common shares outstanding, diluted (in shares)	37,185,000	29,313,000
Net loss per share attributable to common stockholders, diluted (in USD per share)	$ 0.91	$ (0.85)
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Plus: Dilutive convertible promissory notes (in shares)	512,000	0
Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Plus: Dilutive convertible promissory notes (in shares)	208,000	0
ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Plus: Dilutive convertible promissory notes (in shares)	23,000	0
Common stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)		578,000
Convertible Senior Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)		2,701,000
Unvested restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)		2,453,000
ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)		13,000