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Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares | Jun. 30, 2026 | Dec. 31, 2025
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Common Stock, No Par Value (in dollars per share) | $ 0 | $ 0
Common Stock, Shares Authorized (in shares) | 35,000,000 | 35,000,000
Common Stock, Shares, Outstanding (in shares) | 26,410,243 | 26,312,842
Treasury Stock, Common, Shares (in shares) | 638,553 | 735,954

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