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Note 12 - Stock-based Compensation - Stock Option Activity (Details)
 6 Months Ended
Jun. 30, 2023
$ / shares
shares
Market Vesting Options [Member]  
Balance, Number (in shares) | shares 633,334
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 3.00
Granted, Number (in shares) | shares 100,000
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 3.00
Forfeited or expired, Number (in shares) | shares 0
Forfeited or expired, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 0
Balance, Number (in shares) | shares 733,334
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 3.00
Time Vesting Options [Member]  
Balance, Number (in shares) | shares 662,910
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 10.02
Granted, Number (in shares) | shares 0
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 0
Forfeited or expired, Number (in shares) | shares (112)
Forfeited or expired, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 162.00
Balance, Number (in shares) | shares 662,798
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 10.00
Performance Vesting Options [Member]  
Balance, Number (in shares) | shares 240,000
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 7.59
Granted, Number (in shares) | shares 0
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 0
Forfeited or expired, Number (in shares) | shares 0
Forfeited or expired, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 0
Balance, Number (in shares) | shares 240,000
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares $ 7.59