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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares $ / shares in Thousands	Mar. 31, 2023	Dec. 31, 2022
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)	26,178,248	26,094,865
Treasury Stock, Common, Shares (in shares)	870,548	953,931

X

- Definition

Face amount per share of no-par value common stock.

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X

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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X

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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X

- Definition

Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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