NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details) $ in Thousands			3 Months Ended	12 Months Ended
	Feb. 03, 2020 USD ($) shares	Jan. 21, 2020	Mar. 31, 2022 USD ($)	Dec. 31, 2021 shares	Dec. 31, 2020 USD ($)
Subsidiary, Sale of Stock [Line Items]
Reverse stock split		3.01581
Exercise of common stock options (in shares) | shares				110,621
Gross proceeds | $					$ 212,101
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares sold | shares	12,174,263
Exercise of common stock options (in shares) | shares	1,587,947
Gross proceeds | $	$ 231,311
Proceeds from stock issuance, net | $	$ 212,101
Number of shares issued upon conversion | shares	21,499,770
Open Market Sale | Maximum | Forecast
Subsidiary, Sale of Stock [Line Items]
Proceeds from stock issuance, net | $			$ 150,000