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Business Combinations - Unaudited Pro Forma Condensed Combined Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Delta Bancshare Company |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Net interest income |  | $ 49,600 | $ 93,267 | $ 90,812
Provision for loan losses |  | 3,140 | 3,859 | 15,726
Non-interest income |  | 18,519 | 39,801 | 36,545
Non-interest expense |  | 48,846 | 84,141 | 89,845
Income before taxes |  | 16,133 | 45,068 | 21,786
Income tax expense (benefit) |  | 3,560 | 10,062 | 4,371
Net income (loss) |  | $ 12,573 | $ 35,006 | $ 17,415
Earnings per share |  |  |  |
Basic | $ 0.00 | $ 0.62 | $ 1.76 | $ 0.87
Diluted | $ 0.00 | $ 0.62 | $ 1.75 | $ 0.87
Basic weighted average shares o/s |  | 20,359,460 | 19,875,516 | 19,977,949
Diluted weighted average shares o/s |  | 20,412,480 | 19,947,227 | 20,030,969
LINCO Bancshares, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Net interest income |  |  |  | $ 86,217
Provision for loan losses |  |  |  | 11,776
Non-interest income |  |  |  | 37,145
Non-interest expense |  |  |  | 87,812
Income before taxes |  |  |  | 23,774
Income tax expense (benefit) |  |  |  | 4,947
Net income (loss) |  |  |  | $ 18,827
Earnings per share |  |  |  |
Basic |  |  |  | $ 1.06
Diluted |  |  |  | $ 1.06
Basic weighted average shares o/s |  |  |  | 17,685,679
Diluted weighted average shares o/s |  |  |  | 17,738,699

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