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LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (155,521) | $ (149,643) | $ (141,465) | $ (132,099)
Financing Receivable, Credit Loss, Expense (Reversal) | 8,563 | 11,097 | 8,158 |
Recoveries | 5,681 | 2,788 | 3,921 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 8,366 | $ 5,707 | $ 2,713 |
Net loan charge-offs as a percent of average outstanding loans during the period | (0.02%) | (0.03%) | 0.01% |
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (40,830) | $ (44,384) | $ (44,086) | (52,995)
Financing Receivable, Credit Loss, Expense (Reversal) | 5,970 | 259 | 9,299 |
Recoveries | 2,767 | 557 | 392 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 351 | $ 0 | $ 2 |
Net loan charge-offs as a percent of average outstanding loans during the period | 0.02% | 0.01% | 0.00% |
Multifamily Real Estate [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (10,308) | $ (9,326) | $ (7,734) | (7,043)
Financing Receivable, Credit Loss, Expense (Reversal) | 982 | 1,592 | 691 |
Recoveries | 0 | 0 | 0 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 0 | $ 0 | $ 0 |
Net loan charge-offs as a percent of average outstanding loans during the period | 0.00% | 0.00% | 0.00% |
Construction and Land [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (29,038) | $ (28,095) | $ (29,171) | (27,294)
Financing Receivable, Credit Loss, Expense (Reversal) | 1,093 | 16 | 1,523 |
Recoveries | 0 | 29 | 384 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 150 | $ 1,089 | $ 30 |
Net loan charge-offs as a percent of average outstanding loans during the period | 0.00% | (0.01%) | 0.00% |
Commercial business [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (38,611) | $ (35,464) | $ (33,299) | (26,421)
Financing Receivable, Credit Loss, Expense (Reversal) | 7,139 | 3,532 | 6,654 |
Recoveries | 1,963 | 1,283 | 1,923 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 4,020 | $ 2,650 | $ 1,699 |
Net loan charge-offs as a percent of average outstanding loans during the period | (0.04%) | (0.01%) | 0.00% |
Agricultural Business [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (5,727) | $ (3,865) | $ (3,475) | (3,190)
Financing Receivable, Credit Loss, Expense (Reversal) | 1,558 | 808 | 148 |
Recoveries | 304 | 146 | 475 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 0 | $ 564 | $ 42 |
Net loan charge-offs as a percent of average outstanding loans during the period | 0.00% | 0.00% | 0.00% |
One- to four-family residential [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (20,807) | $ (19,271) | $ (14,729) | (8,205)
Financing Receivable, Credit Loss, Expense (Reversal) | 1,365 | 4,354 | 6,343 |
Recoveries | 171 | 230 | 181 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 0 | $ 42 | $ 0 |
Net loan charge-offs as a percent of average outstanding loans during the period | 0.00% | 0.00% | 0.00% |
Consumer [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ (10,200) | $ (9,238) | $ (8,971) | $ (6,951)
Financing Receivable, Credit Loss, Expense (Reversal) | 2,396 | 1,086 | 2,394 |
Recoveries | 476 | 543 | 566 |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 1,910 | $ 1,362 | $ 940 |
Net loan charge-offs as a percent of average outstanding loans during the period | (0.01%) | (0.01%) | 0.00% |
Small Balance Commercial Real Estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 5,955 |  |  |

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