ORGANIZATION, BASIS OF PRESENTATION, AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share, Potentially Dilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive common stock equivalents (in shares)	12,548,122	27,451,909
Redeemable convertible series 1 preferred stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive common stock equivalents (in shares)	4,520,000	4,520,000
Warrants to purchase common stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive common stock equivalents (in shares)	5,750,000	11,616,080
Private placement option
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive common stock equivalents (in shares)	0	9,675,000
Options to purchase common stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive common stock equivalents (in shares)	2,140,618	1,510,968
Unvested shares of restricted stock units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive common stock equivalents (in shares)	137,504	129,861