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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Dividends declared per common share | $ 0.81 | $ 0.76 | $ 0.70
Issuance of common shares pursuant to the Dividend Reinvestment Plan (in shares) | 13,804 | 22,949 | 30,655
Stock issued during period, shares, deferred compensation | 12,921 | 11,072 | 9,043
Restricted stock issued during period, shares, pursuant to the 2017 stock incentive plan | 24,867 | 25,950 | 13,250
Stock issued during period, shares, employee stock purchase plans | 11,037 | 8,899 |
Purchase of treasury shares (in shares) | 6,288 | 40,026 | 3,900
Issuance of common shares pursuant to the exercise of stock options (in shares) |  |  | 10,500
First Banc Trust |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  | 1,643,900
SCB Bancorp |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  | 1,330,571
Common Stock | Capital Raise |  |  |
Stock issued during period, new issue (in shares) |  |  | 947,368

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