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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares $ / shares in Thousands	Mar. 31, 2022	Dec. 31, 2021
Common shares, authorized (in shares)	35,000,000	35,000,000
Common shares, outstanding (in shares)	26,079,115	26,103,661
Treasury shares (in shares)	969,681	945,135
Common shares, par value (in dollars per share)	$ 0	$ 0

X

- Definition

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

+ References

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-Publisher FASB
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-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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X

- Definition

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

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- Definition

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

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-Topic 505
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- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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