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Consolidated Balance Sheets (Current Period Unaudited)-parentheticals (Parentheticals) - $ / shares $ / shares in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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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, Ending Balance (in shares) | 26,079,115 | 26,103,661
Treasury Stock, Shares, Total (in shares) | 969,681 | 945,135

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