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Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - $ / shares shares in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Shares of restricted stock awards surrendered (in shares) | 1,904 | 1,245
Shares issued for acquisition (in shares) |  | 416,478
Shares issued per share (in dollars per share) |  | $ 42.00
Cash dividends per share (in dollars per share) | $ 1.24 | $ 1.23

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