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Schedule of Stock Unit Activity (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2022
USD ($)
$ / shares
shares
Share-Based Payment Arrangement [Abstract]  
Number of Shares Outstanding, Beginning Balance | shares 613,614
Weighted Average Exercise Price, Beginning Balance | $ / shares $ 4.77
Weighted Average Remaining Contractual Life (in Years), Beginning Balance 9 years 11 months 8 days
Total Intrinsic Value, Beginning Balance | $ $ 1,687
Number of Shares Outstanding, Granted | shares 28,378
Weighted Average Exercise Price, Granted | $ / shares $ 2.96
Number of Shares Outstanding, Exercised | shares
Weighted Average Exercise Price, Exercised | $ / shares
Number of Shares Outstanding, Canceled or expired | shares (38,096)
Weighted Average Exercise Price, Canceled or expired | $ / shares $ 4.77
Number of Shares Outstanding, Ending Balance | shares 603,896
Weighted Average Exercise Price, Ending Balance | $ / shares $ 4.68
Weighted Average Remaining Contractual Life (in Years), Ending Balance 9 years 6 months 10 days
Total Intrinsic Value, Ending Balance | $ $ 10
Number of Shares Exercisable, Ending Balance | shares
Weighted Average Exercise Price Options Exercisable, Ending Balance | $ / shares
Total Intrinsic Value Exercisable, Ending Balance | $