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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares $ / shares in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Preferred stock, authorized (in shares) | 100,000 | 100,000
Preferred stock, outstanding (in shares) | 0 | 0
Common stock, par value (in dollars per share) | $ 0 | $ 0
Common stock, authorized (in shares) | 12,000,000 | 12,000,000
Common stock, outstanding (in shares) | 7,692,537 | 7,796,352

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