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v3.19.1

Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash dividends declared per common share (in dollars per share) |  | $ 0.24 | $ 0.20 | $ 0.16
Issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan (in shares) |  | 15,528 |  |
Issuance of shares of common stock as s result of stock options exercised (in shares) |  | 60,127 | 114,100 | 111,423
Retained Earnings [Member] |  |  |  |
Cash dividends declared per common share (in dollars per share) |  | $ 0.24 | $ 0.20 | $ 0.16
Common Stock [Member] |  |  |  |
Issuance of common stock, net of issuance costs, shares (in shares) |  |  |  | 1,215,000
Issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan (in shares) |  | 23,501 | 13,318 | 20,192
Issuance of shares of common stock as a result of the acquisition, net of issuance cost (in shares) | 242,334 | 1,699,414 | 678,670 |
Issuance of shares of common stock as s result of stock options exercised (in shares) |  | 60,127 |  | 111,423
Restricted stock awards (in shares) |  | 22,660 | 28,289 | 21,882
Exchange of shares of common stock in connection with stock options exercised and restricted stock vested (in shares) |  | 21,190 | 23,054 | 22,735
Common Stock [Member] | Guaranty Bank and Trust Company [Member] |  |  |  |
Issuance of shares of common stock as a result of the acquisition, net of issuance cost (in shares) |  |  | 138,071 |
Common Stock [Member] | Springfield Bancshares |  |  |  |
Issuance of shares of common stock as a result of the acquisition, net of issuance cost (in shares) |  | 106,237 |  |

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