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Business Combinations - Unaudited Pro Forma Condensed Combined Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Business Acquisition [Line Items] |  |
Net interest income |  | $ 38,237
Provision for loan losses |  | 12,136
Non-interest income |  | 17,749
Non-interest expense |  | 37,659
Income before taxes |  | 6,191
Income tax expense (benefit) |  | 1,078
Net income (loss) |  | $ 5,113
Earnings per share |  |
Basic |  | $ 0.30
Diluted |  | $ 0.29
Basic weighted average shares o/s |  | 17,299,927
Diluted weighted average shares o/s |  | 17,352,947
Delta Bancshare Company |  |
Business Acquisition [Line Items] |  |
Net interest income | $ 44,200 | $ 40,966
Provision for loan losses | 2,952 | 14,136
Non-interest income | 21,088 | 18,528
Non-interest expense | 40,575 | 39,653
Income before taxes | 21,761 | 5,705
Income tax expense (benefit) | 4,797 | 887
Net income (loss) | $ 16,964 | $ 4,818
Earnings per share |  |
Basic | $ 0.88 | $ 0.28
Diluted | $ 0.88 | $ 0.28
Basic weighted average shares o/s | 19,295,860 | 17,299,927
Diluted weighted average shares o/s | 19,358,457 | 17,352,947

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