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Note I - Stockholders' Equity - Summary of Shares to be Issued (Details) - shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Shares-to-be-issued, outstanding (in shares) 2,066,343 2,428,329
Granted in current period (in shares) 524,814 93,918
Issued in current period (in shares) (150,484) (455,904)
Shares-to be issued outstanding (in shares) 2,440,673 2,066,343