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SUMMARY OF SIGNIFICANT EVENTS AND ACCOUNTING POLICIES - 401 (k) Plan (Details) - USD ($)
$ in Millions
12 Months Ended 24 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
401(k) Plan      
Eligibility age for employees to participate in the plan 18 years    
Company's matching contributions     $ 0.8
Company's matching contributions dollar-for-dollar on employee's pre-tax earnings (as a percent) 10.00% 10.00%