Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares $ / shares in Thousands	Mar. 31, 2021	Dec. 31, 2020
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, issued (in shares)	16,876,239	16,800,662
Common stock, outstanding (in shares)	16,876,239	16,800,662

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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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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