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LOANS AND ALLOWANCE FOR CREDIT LOSSES (Schedule of Loan Receivables) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
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Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | $ 5,913,511 |  | $ 5,642,012 |  |  |
Deferred fees, net of origination costs | (16,392) |  | (17,215) |  |  |
Loans, net of deferred fees and costs | 5,897,119 |  | 5,624,797 |  |  |
Allowance for credit losses | (62,493) | $ (60,008) | (57,965) | $ (52,298) | $ (51,650) | $ (44,876)
Net loans | 5,834,626 |  | 5,566,832 |  |  |
Loan encumbered | 172,700 |  | 60,000 |  |  |
Asset Pledged as Collateral |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loan pledged | 3,500,000 |  | 3,300,000 |  |  |
Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 4,829,673 |  | 4,573,463 |  |  |
Commercial & industrial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 1,069,676 |  | 1,051,463 |  |  |
Allowance for credit losses | (10,944) | (11,282) | (11,207) | (11,096) | (10,977) | (10,274)
Loan encumbered | 266,200 |  | 548,600 |  |  |
Consumer |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 14,162 |  | 17,086 |  |  |
Allowance for credit losses | (471) | (525) | (480) | (568) | (547) | (195)
Commercial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 4,172,690 |  | 3,857,711 |  |  |
Commercial | Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 4,172,690 |  | 3,857,711 |  |  |
Allowance for credit losses | (41,449) | (38,484) | (35,635) | (35,025) | (34,621) | (29,496)
Construction |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 176,277 |  | 153,512 |  |  |
Construction | Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 176,277 |  | 153,512 |  |  |
Allowance for credit losses | (1,718) | (1,759) | (1,765) | (1,769) | (1,600) | (1,983)
Multi-family |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 389,124 |  | 467,536 |  |  |
Multi-family | Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 389,124 |  | 467,536 |  |  |
Allowance for credit losses | (7,498) | (7,827) | (8,215) | (3,489) | (3,543) | (2,823)
One-to-four-family |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 91,582 |  | 94,704 |  |  |
One-to-four-family | Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 91,582 |  | 94,704 |  |  |
Allowance for credit losses | $ (413) | $ (131) | $ (663) | $ (351) | $ (362) | $ (105)

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