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Loans and Allowance for Credit Losses - Classes of loans (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | $ 4,661,348 | $ 4,581,381 |  |
Allowance for credit losses | (64,670) | (63,480) | $ (60,754) | $ (67,338)
Deferred loan fees and gains, net | (7,058) | (11,065) |  |
Loans receivable, net | $ 4,589,620 | $ 4,506,836 |  |
Weighted average interest rate | 6.25% | 5.54% |  |
One- to four-family residential construction |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | $ 29,628 | $ 33,849 |  |
Subdivision construction |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 23,359 | 32,067 |  |
Land development |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 48,015 | 41,613 |  |
Commercial construction |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 703,407 | 757,690 |  |
Owner occupied one- to four-family residential |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 769,260 | 778,533 |  |
Non-owner occupied one- to four-family residential |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 121,275 | 124,870 |  |
Commercial real estate |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 1,521,032 | 1,530,663 |  |
Other residential |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 942,071 | 781,761 |  |
Commercial business |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 318,050 | 293,228 |  |
Industrial revenue bonds |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 12,047 | 12,852 |  |
Consumer auto |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 28,343 | 37,281 |  |
Consumer other |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | 28,978 | 33,732 |  |
Home equity lines of credit |  |  |  |
Loans and Allowance for Credit Losses |  |  |  |
Loans receivable | $ 115,883 | $ 123,242 |  |

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