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LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Loan Receivables) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | --- | --- | --- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | $ 3,610,409 |  | $ 3,142,319 |  |  |
Deferred fees | (7,121) |  | (5,266) |  |  |
Loans, net of deferred fees and unamortized costs | 3,603,288 |  | 3,137,053 |  |  |
Allowance for loan losses | (38,121) | $ (37,377) | (35,407) | $ (33,614) | $ (32,505) | $ (26,272)
Net loans | 3,565,167 |  | 3,101,646 |  |  |
Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 2,964,039 |  | 2,504,388 |  |  |
Commercial and industrial |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 611,303 |  | 591,500 |  |  |
Allowance for loan losses | (10,413) | (10,545) | (12,123) | (11,208) |  | (7,070)
Commercial and industrial | Paycheck Protection Program loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Net loans | 2,500 |  | 3,800 |  |  |
Consumer. |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 35,067 |  | 46,431 |  |  |
Allowance for loan losses | (1,696) | (1,774) | (1,581) | (1,175) | (961) | (754)
Commercial | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 2,378,074 |  | 1,887,505 |  |  |
Allowance for loan losses | (21,468) | (20,299) | (17,243) | (17,079) | (18,690) | (15,317)
Construction | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 150,144 |  | 112,290 |  |  |
Allowance for loan losses | (2,101) | (1,972) | (1,593) | (1,447) | (741) | (411)
Multi-family | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 374,555 |  | 433,239 |  |  |
Allowance for loan losses | (2,287) | (2,618) | (2,661) | (2,524) | (2,739) | (2,453)
One to four family | Real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Total loans | 61,266 |  | 71,354 |  |  |
Allowance for loan losses | $ (156) | $ (169) | $ (206) | $ (181) | $ (242) | $ (267)

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