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LOANS AND ALLOWANCE FOR CREDIT LOSSES (Schedule of Loans by Allowance measurement Method) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending allowance balance | $ 62,493 | $ 60,008 | $ 57,965 | $ 52,298 | $ 51,650 | $ 44,876
Total ending loan balance | 5,913,511 |  | 5,642,012 |  |  |
Commercial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending loan balance | 4,172,690 |  | 3,857,711 |  |  |
Construction |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending loan balance | 176,277 |  | 153,512 |  |  |
Multi-family |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending loan balance | 389,124 |  | 467,536 |  |  |
One-to-four-family |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending loan balance | 91,582 |  | 94,704 |  |  |
Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending loan balance | 4,829,673 |  | 4,573,463 |  |  |
Real Estate | Commercial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending allowance balance | 41,449 | 38,484 | 35,635 | 35,025 | 34,621 | 29,496
Total ending loan balance | 4,172,690 |  | 3,857,711 |  |  |
Real Estate | Construction |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending allowance balance | 1,718 | 1,759 | 1,765 | 1,769 | 1,600 | 1,983
Total ending loan balance | 176,277 |  | 153,512 |  |  |
Real Estate | Multi-family |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending allowance balance | 7,498 | 7,827 | 8,215 | 3,489 | 3,543 | 2,823
Total ending loan balance | 389,124 |  | 467,536 |  |  |
Real Estate | One-to-four-family |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending allowance balance | 413 | 131 | 663 | 351 | 362 | 105
Total ending loan balance | 91,582 |  | 94,704 |  |  |
Commercial & industrial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending allowance balance | 10,944 | 11,282 | 11,207 | 11,096 | 10,977 | 10,274
Total ending loan balance | 1,069,676 |  | 1,051,463 |  |  |
Consumer |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total ending allowance balance | 471 | $ 525 | 480 | $ 568 | $ 547 | $ 195
Total ending loan balance | $ 14,162 |  | $ 17,086 |  |  |

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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