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Consolidated Balance Sheets (Parentheticals) - $ / shares $ / shares in Thousands	Dec. 31, 2019	Dec. 31, 2018
Common shares, authorized (in shares)	35,000,000	35,000,000
Common shares, outstanding (in shares)	26,067,502	26,117,045
Treasury shares (in shares)	981,294	931,751
Common shares, par value (in dollars per share)	$ 0	$ 0

X

- Definition

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

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-SubTopic 10
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- 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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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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