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Business Combinations - Unaudited Pro Forma Condensed Combined Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Delta Bancshare Company |  |  |
Business Acquisition [Line Items] |  |  |
Net interest income | $ 187,075 | $ 147,387 |
Provision for loan losses | 4,806 | 14,679 |
Non-interest income | 74,799 | 53,371 |
Non-interest expense | 165,062 | 132,086 |
Income before income taxes | 92,006 | 53,993 |
Income tax expense | 18,508 | 12,321 |
Net income available to common stockholders | $ 73,498 | $ 41,672 |
Earnings per share |  |  |
Basic | $ 3.64 | $ 2.07 |
Diluted | $ 3.63 | $ 2.07 |
Basic weighted average shares outstanding | 20,169,077 | 20,111,889 |
Diluted weighted average shares outstanding | 20,243,635 | 20,164,909 |
LINCO Bancshares, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Net interest income |  | $ 173,676 | $ 169,430
Provision for loan losses |  | 15,351 | 18,242
Non-interest income |  | 70,879 | 66,228
Non-interest expense |  | 159,778 | 152,596
Income before income taxes |  | 69,426 | 64,820
Income tax expense |  | 15,994 | 15,944
Net income available to common stockholders |  | $ 53,432 | $ 48,876
Earnings per share |  |  |
Basic |  | $ 2.99 | $ 2.72
Diluted |  | $ 2.98 | $ 2.71
Basic weighted average shares outstanding |  | 17,886,998 | 17,979,126
Diluted weighted average shares outstanding |  | 17,979,007 | 18,025,102

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