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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares $ / shares in Thousands	Sep. 30, 2024	Dec. 31, 2023
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)	26,227,540	26,193,998
Treasury Stock, Common, Shares (in shares)	821,256	953,931

X

- Definition

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

+ References

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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Name Accounting Standards Codification
-Section S99
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 50
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-Topic 505
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 220
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X

- Definition

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

+ References

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-Topic 505
-SubTopic 30
-Section 45
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