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LOANS HELD FOR INVESTMENT, NET - Loan Categories (Details) - USD ($) $ in Thousands | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Loans held for investment, net: |  |  |  |  |
Total Loans |  | $ 10,566,831 | $ 9,244,661 |  |
Principal balances outstanding |  | 10,566,831 | 9,244,661 |  |
Allowance for loan losses |  | (83,507) | (83,853) | $ (41,461) | $ (28,441)
Total loans held for investment, net |  | $ 10,483,324 | 9,160,808 |  |
Small Business Administration ("SBA") Paycheck Protection Program ("PPP") [Member] |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Loan and leases carry guarantee rate |  | 100.00% |  |  |
Total real estate loans |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Total Loans |  | $ 9,487,440 | 8,294,204 |  |
Allowance for loan losses |  | (43,381) | (47,771) | (28,712) | (15,555)
One-to-four family residential and cooperative/condominium apartment |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Total Loans |  | 773,321 | 669,282 |  |
Allowance for loan losses |  | (5,969) | (5,932) | (644) | (269)
Multifamily residential and residential mixed-use |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Total Loans |  | 4,026,826 | 3,356,346 |  |
Allowance for loan losses |  | (8,360) | (7,816) | (17,016) | (10,142)
Commercial real estate ("CRE") |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Total Loans |  | 4,457,630 | 3,945,948 |  |
Allowance for loan losses |  | (27,329) | (29,166) | (9,059) | (3,900)
Acquisition, development, and construction |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Total Loans |  | 229,663 | 322,628 |  |
Allowance for loan losses |  | (1,723) | (4,857) | (1,993) | (1,244)
Commercial and Industrial ("C&I") Loans |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Total Loans |  | 1,071,712 | 933,559 |  |
Allowance for loan losses |  | (39,853) | (35,331) | (12,737) | (12,870)
Commercial and Industrial ("C&I") Loans | Small Business Administration ("SBA") Paycheck Protection Program ("PPP") [Member] |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Principal balances outstanding |  | 5,800 | 66,000 |  |
Gain recorded on sale of SBA loans | $ 20,700 |  |  |  |
Sold amount | $ 596,200 |  |  |  |
Other Loans |  |  |  |  |
Loans held for investment, net: |  |  |  |  |
Total Loans |  | 7,679 | 16,898 |  |
Allowance for loan losses |  | $ (273) | $ (751) | $ (12) | $ (16)

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