Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY AND CLASS A PREFERRED STOCK - Restricted Stock Units (Details)

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STOCKHOLDERS' EQUITY AND CLASS A PREFERRED STOCK - Restricted Stock Units (Details) - Restricted stock units - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Number of units      
Unvested balance - beginning   815,524  
Granted   143,006 845,524
Vested   136,500  
Forfeited   (107,000) (30,000)
Unvested balance - ending 715,030 715,030 815,524
Weighted average exercise price      
Unvested balance - beginning   $ 3.37  
Granted   7.13 $ 3.37
Vested   3.37  
Forfeited   3.37 3.37
Unvested balance - ending $ 4.12 $ 4.12 $ 3.37
Vesting period   1 year 9 months 18 days  
Unrecognized stock-based compensation expense $ 1.0 $ 1.0  
Share based compensation expense $ 2.4