v3.25.2
Note 11 - Stockholders' Equity, Stock Options and Warrants - Summary of Transactions for Stock Options and Warrants (2) (Details)
 12 Months Ended
Dec. 31, 2024
$ / shares
shares
Warrants, outstanding (in shares) 1,806,589
Warrants, average exercise price (in dollars per share) | $ / shares $ 21.52
Warrants, issued (in shares) 1,983,302
Issued, average exercise price, warrants (in dollars per share) | $ / shares $ 1.09
Warrants, forfeited (in shares) 0
Warrants, expired (in shares) (81,345)
Expired, average exercise price, warrants (in dollars per share) | $ / shares $ 37.9
Warrants, Exercised (in shares) (958,117)
Exercised, Average Exercise Price, Warrants (in dollars per share) | $ / shares $ 1.32
Number of Shares Outstanding (in shares) 43,595
Share-Based Payment Arrangement, Option [Member]  
Number of Shares Outstanding (in shares) 47,664
Average Exercise Price Outstanding (in dollars per share) | $ / shares $ 82.23
Number of Shares Issued (in shares) 0
Average Exercise Price Issued (in dollars per share) | $ / shares $ 0
Number of Shares Forfeited (in shares) (309)
Average Exercise Price Forfeited (in dollars per share) | $ / shares $ 5.04
Number of Shares Expired (in shares) (3,760)
Average Exercise Price Expired (in dollars per share) | $ / shares $ 83.05
Number of Shares, Exercised (in shares) 0
Average Exercise Price, Exercised (in dollars per share) | $ / shares $ 0
Number of Shares Outstanding (in shares) 43,595
Average Exercise Price Outstanding (in dollars per share) | $ / shares $ 82.7