STOCKHOLDERS' EQUITY - Schedule of Variables used in Black-Scholes Model (Details)	Mar. 31, 2022	Dec. 31, 2021	Jul. 01, 2021	Dec. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life (years)	2 years 9 months 21 days	3 years 21 days	5 years	5 years
Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input	2.45%	0.97%
Expected volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input	125.52%	125.58%
Expected dividend
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants measurement input	0.00%	0.00%