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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Share-based Payment Arrangement, Outstanding Award, Activity, Excluding Option
The following table summarizes the activity related to the Company's RSUs for the year ended December 31, 2022. For purposes of this table, vested RSUs represent the shares for which the service condition had been fulfilled during the year ended December 31, 2022:
Number of
RSUs		Weighted
average grant
date fair value
Balance, December 31, 20211,087,608 $9.71 
Granted785,486 $9.62 
Vested(824,846)$9.25 
Forfeited(55,615)$35.54 
Balance, December 31, 2022
992,633 $8.57 
The following table summarizes the activity related to the Company's PSUs for the year ended December 31, 2022:
Number of
PSUs		Weighted
average grant
date fair value
Balance, December 31, 2021— $— 
Granted116,113 $15.74 
Forfeited(19,867)$15.74 
Balance, December 31, 2022
96,246 $15.74 
Share-based Payment Arrangement, Option, Activity
The following table summarizes the stock option activity for the year ended December 31, 2022:
NumberWeighted
average
exercise price		Weighted
average grant
date fair value		Weighted average
remaining contractual
term (years)
Outstanding as of December 31, 2021720,549 $9.57 $2.21 7.37
Granted4,250 $13.12 $12.95 
Exercised(8,283)$9.01 $2.12 
Cancelled(8,720)$9.33 $3.27 
Forfeited(37,770)$11.42 $7.20 
Outstanding as of December 31, 2022670,026 $9.50 $2.05 5.25
Options exercisable as of December 31, 2022599,439 $8.90 $1.46 5.00
Vested and expected to vest as of December 31, 2022670,026 $9.50 $2.05 5.25
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The following table summarizes the unvested stock option activity for the year ended December 31, 2022:
NumberWeighted
average grant
date fair value
Unvested as of December 31, 2021202,515 $5.04 
Granted4,250 $12.95 
Vested (98,408)$3.14 
Forfeited(37,770)$7.20 
Unvested as of December 31, 202270,587 $7.02 
The valuation model requires the input of highly subjective assumptions. For inputs into the Black-Scholes model, the expected volatility is based on historical implied volatility from recent stock option transactions at the time of grant. The risk-free interest rate for the expected term of the option is based on the U.S. Treasury implied yield at the date of grant. The Company has elected to use the “simplified method” to determine the expected term which is the midpoint between the vesting date and the end of the contractual term because it has insufficient history upon which to base an assumption about the term. The expected dividend yield is 0.0% as the Company has not paid and does not anticipate paying dividends on its common stock. Inputs to the model were as follows for the periods indicated:
Years ended December 31,
20222021
Weighted average exercise price of common stock underlying the options$13.12$59.03
Volatility200%45%
Risk-free rate2.8%0.85%
Dividend yieldNilNil
Expected term in years6.06.0