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EQUITY INCENTIVE PLAN (Summary of Stock Option Activity) (Details) - Stock Options [Member]
 6 Months Ended
Jun. 30, 2023
$ / shares
shares
Number of Options  
Outstanding at beginning of period (in shares) | shares 3,681,336
Granted (in shares) | shares 1,100,600
Forfeited (in shares) | shares (145,893)
Outstanding at end of period (in shares) | shares 4,636,043
Exercisable at end of period (in shares) | shares 2,668,542
Weighted-Average Exercise Price  
Outstanding at beginning of period (in dollars per share) | $ / shares $ 2.84
Granted (in dollars per share) | $ / shares 0.62
Forfeited (in dollars per share) | $ / shares 1.18
Outstanding at end of period (in dollars per share) | $ / shares 2.36
Exercisable at end of period (in dollars per share) | $ / shares $ 2.96