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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Dividends declared per common share | $ 0.94 | $ 0.92 | $ 0.9
Stock issued during period, shares, deferred compensation | 0 | 0 | 8,378
Restricted stock issued during period, shares, pursuant to the 2017 stock incentive plan, net of forfeitures | 45,995 | 54,431 | 54,067
Common stock issued during period, shares, pursuant to the 2017 stock incentive plan, net of forfeitures | 5,717 | 4,600 | 4,950
Stock issued during period, shares, employee stock purchase plans | 32,936 | 38,989 | 23,055
Purchase of treasury shares (in shares) | 15,978 | 13,481 | 10,647
Blackhawk Bancorp, Inc |  |  |
Stock Issued During Period, Shares, Acquisitions |  | 3,290,222 |
Delta Bancshares Company |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  | 2,292,270

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