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Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
$ / shares in Thousands
Sep. 30, 2025
Dec. 31, 2024
Common Stock, Shares Authorized (in shares) 3,000,000 3,000,000
Common Stock, No Par Value (in dollars per share) $ 0 $ 0
Common Stock, No Par Value (in dollars per share) $ 0 $ 0
Common Stock, Shares, Issued (in shares) 2,102,595 2,066,044
Common Stock, Shares, Outstanding (in shares) 2,053,129 2,027,032
Treasury Stock, Common, Shares (in shares) 49,466 39,012