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v3.19.2

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares | 3 Months Ended
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Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018
Common Stock [Member] |  |  |  |
Common shares released from Employee Benefit Trust, shares (in shares) | 5,568 | 138,775 | 4,455 | 116,229
Restricted stock unit awards vested, shares (in shares) | 1,120 | 287,155 |  | 248,877
Exercise of stock options, shares (in shares) |  | 300 | 600 |
Treasury Stock [Member] |  |  |  |
Repurchase of shares to satisfy tax obligation, shares (in shares) | 382 | 83,908 | 32 | 72,837
Purchase of treasury shares (in shares) |  |  | 227,581 | 217,863
Retained Earnings [Member] |  |  |  |
Dividends on common stock (in dollars per share) | $ 0.21 | $ 0.21 | $ 0.20 | $ 0.20

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