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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Summary of equity incentive program
A summary of our equity incentive program as of December 31, 2022, is as follows (in thousands):
Common stock shares available for grant631 
Stock options outstanding 140 
RSUs outstanding887 
RSAs outstanding119 
PSUs outstanding615 
Summary of time-based stock options
The following summarizes activities for the time-based stock options for the year ended December 31, 2022:
Number of Shares
Underlying Stock Options
(in thousands)		Weighted Average
Exercise Price
Per Share		Weighted Average
Remaining Contractual Life
(Years)		Aggregate
Intrinsic Value
(in thousands)
Outstanding at December 31, 2021242 $8.04 4.44$— 
Granted— — 
Exercised— — 
Canceled or expired(102)8.55 
Outstanding as of December 31, 2022140 $7.67 4.03$— 
Vested and expected to vest at December 31, 2022137 $7.67 4.03$— 
Exercisable at December 31, 2022102 $7.66 4.02$— 
Summary of restricted stock units activities
The following summarizes RSU activities for the year ended December 31, 2022:
Number of Restricted Stock Units
 (in thousands)		Weighted Average Grant Date Fair Value Per Share
Weighted Average
Remaining Contractual Life
(Years)
Aggregate
Intrinsic Value
(in thousands)
Outstanding at December 31, 2021224 $6.66 0.56$1,280 
Granted1,000 5.65 
Released(271)5.70 
Forfeited(66)6.04 
Outstanding at December 31, 2022887 $5.85 1.31$6,226 
Summary of restricted stock awards activities
The following summarizes RSA activities for the year ended December 31, 2022:
Number of Restricted Stock Awards
(in thousands)
Weighted Average Grant Date Fair Value Per ShareWeighted Average Remaining Recognition Period
(Years)
Outstanding at December 31, 2021— $— 0
Granted233 5.13 
Released(114)4.78 
Forfeited— — 
Outstanding at December 31, 2022119 $5.47 0.39
Share-based Payment Arrangement, Outstanding Award, Activity, Excluding Option
The following summarizes PSU activities for the year ended December 31, 2022:
Number of Market Condition-Based Restricted Stock Units
(in thousands)		Weighted Average Grant Date Fair Value Per ShareWeighted Average Remaining Recognition Period
(Years)
Outstanding at December 31, 202167 $6.20 1.49
Granted600 3.63 
Released(11)6.20 
Forfeited(41)6.20 
Outstanding at December 31, 2022615 $3.69 1.12

The assumptions used to value market condition-based restricted stock units granted during the year ended December 31, 2022 under our equity incentive program are as follows:
Years Ended
December 31, 2022
Expected life (in years)1.2
Volatility58%
Interest rate1.7%
Dividend yield—
Summary of stock-based compensation expenses The stock-based compensation related to all of our stock-based awards and ESPP for the year ended December 31, 2022, and 2021 is as follows (in thousands):
 Years Ended
December 31,
 20222021
Stock options$120 $386 
RSUs, RSAs and PSUs3,295 1,894 
ESPP2 58 
Total$3,417 $2,338 
Sales and marketing$61 $745 
Research and development117 742 
General and administrative3,239 851 
Total$3,417 $2,338