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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Classes of loans (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | --- | --- | --- | --- | ---
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | $ 4,538,114 |  | $ 4,761,848 |  |  |
Allowance for credit losses | (64,749) | $ (64,815) | (64,760) | $ (64,915) | $ (65,255) | $ (64,670)
Deferred loan fees and gains, net | (5,682) |  | (6,695) |  |  |
Loans receivable, net | $ 4,467,683 |  | $ 4,690,393 |  |  |
Weighted average interest rate | 6.11% |  | 6.08% |  |  |
One- to four-family residential construction |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | $ 21,856 |  | $ 30,533 |  |  |
Subdivision construction |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 25,452 |  | 19,861 |  |  |
Land development |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 32,725 |  | 42,504 |  |  |
Commercial construction |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 242,936 |  | 352,793 |  |  |
Owner occupied one- to four-family residential |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 672,276 |  | 710,446 |  |  |
Non-owner occupied one- to four-family residential |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 124,516 |  | 122,901 |  |  |
Commercial real estate |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 1,530,990 |  | 1,543,742 |  |  |
Other residential (multi-family) |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 1,485,546 |  | 1,549,249 |  |  |
Commercial business |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 230,299 |  | 220,291 |  |  |
Consumer auto |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 24,447 |  | 25,787 |  |  |
Consumer other |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | 23,712 |  | 27,905 |  |  |
Home equity lines of credit |  |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |  |
Loans receivable | $ 123,359 |  | $ 115,836 |  |  |

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