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Consolidated Statements of Changes in Shareholders' Equity (unaudited) (Parenthetical) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Forfeiture of restricted stock award grants (in shares) | 0 |
Restricted stock award grants (in shares) | 35,160 | 39,790
Issuance of common stock, net of issuance costs (in shares) | 115,790 |
Performance-based restricted stock award (in shares) | 8,351 |
Cash dividends declared (in dollars per share) | $ 0.17 | $ 0.17
Purchase of treasury stock (in shares) |  | 0
Restricted Stock |  |
Purchase of treasury stock (in shares) | 7,211 | 7,700
Performance Shares |  |
Purchase of treasury stock (in shares) | 3,458 |

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