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LOANS AND ALLOWANCE FOR CREDIT LOSSES (Schedule of Loan Receivables) (Details) - USD ($) | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | $ 5,165,089,000 |  | $ 4,853,495,000 |  |  |
Deferred fees, net of origination costs | (15,543,000) |  | (12,972,000) |  |  |
Loans, net of deferred fees and costs | 5,149,546,000 |  | 4,840,523,000 |  |  |
Allowance for credit losses | (51,650,000) | $ (47,752,000) | (44,876,000) | $ (40,534,000) | $ (38,134,000) | $ (34,729,000)
Net loans | 5,097,896,000 |  | 4,795,647,000 |  |  |
Asset Pledged as Collateral |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Securities pledged | 3,400,000,000 |  | 2,400,000,000 |  |  |
Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 4,190,297,000 |  | 3,919,948,000 |  |  |
Commercial and industrial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 954,700,000 |  | 908,616,000 |  |  |
Allowance for credit losses | (10,977,000) | (10,757,000) | (10,274,000) | (9,144,000) | (8,488,000) | (7,708,000)
Commercial and industrial | Paycheck Protection Program loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Net loans | 77,000 |  | 97,000 |  |  |
Consumer |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 20,092,000 |  | 24,931,000 |  |  |
Allowance for credit losses | (547,000) | (620,000) | (195,000) | (217,000) | (237,000) | (404,000)
Commercial | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 3,546,818,000 |  | 3,254,508,000 |  |  |
Allowance for credit losses | (34,621,000) | (31,836,000) | (29,496,000) | (25,945,000) | (24,720,000) | (22,216,000)
Commercial | Commercial and industrial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans |  |  | 908,616,000 |  |  |
Construction |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans |  |  | 143,693,000 |  |  |
Construction | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 131,370,000 |  | 143,693,000 |  |  |
Allowance for credit losses | (1,600,000) | (1,261,000) | (1,983,000) | (2,587,000) | (2,329,000) | (2,105,000)
Multifamily |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans |  |  | 468,540,000 |  |  |
Multifamily | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 460,285,000 |  | 468,540,000 |  |  |
Allowance for credit losses | (3,543,000) | (2,871,000) | (2,823,000) | (2,539,000) | (2,256,000) | (2,156,000)
One to four family | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 51,824,000 |  | 53,207,000 |  |  |
Allowance for credit losses | $ (362,000) | $ (407,000) | $ (105,000) | $ (102,000) | $ (104,000) | $ (140,000)

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