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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Aging of Recorded Investment in Past Due Loans and Leases (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | $ 7,115,038 | $ 7,251,480
30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 41,101 | 36,431
60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 5,565 | 3,711
Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 44,554 | 32,609
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 91,220 | 72,751
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 7,023,818 | 7,178,729
Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable |  | 1,420,023
Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable |  | 102,925
Commercial | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,845,960 | 2,668,984
Commercial | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,259,651 | 1,311,105
Commercial | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,689,943 | 1,361,054
Commercial | SBA |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 68,137 | 205,548
Commercial | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 243,553 | 181,841
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,845,960 | 2,668,984
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial and industrial | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 4,002 | 9,342
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial and industrial | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 481 | 1,351
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial and industrial | Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 13,833 | 9,503
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial and industrial | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 18,316 | 20,196
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial and industrial | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,827,644 | 2,648,788
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,259,651 | 1,311,105
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial real estate | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 311 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial real estate | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial real estate | Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 910 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial real estate | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,221 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Commercial real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,258,430 | 1,311,105
Commercial | Loans and Finance Receivables, Traditional Loans | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,689,943 | 1,361,054
Commercial | Loans and Finance Receivables, Traditional Loans | Multifamily | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 786
Commercial | Loans and Finance Receivables, Traditional Loans | Multifamily | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Multifamily | Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Multifamily | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 786
Commercial | Loans and Finance Receivables, Traditional Loans | Multifamily | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,689,943 | 1,360,268
Commercial | Loans and Finance Receivables, Traditional Loans | SBA |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 68,137 | 205,548
Commercial | Loans and Finance Receivables, Traditional Loans | SBA | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 287 | 987
Commercial | Loans and Finance Receivables, Traditional Loans | SBA | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 2,360
Commercial | Loans and Finance Receivables, Traditional Loans | SBA | Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 10,299 | 15,941
Commercial | Loans and Finance Receivables, Traditional Loans | SBA | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 10,586 | 19,288
Commercial | Loans and Finance Receivables, Traditional Loans | SBA | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 57,551 | 186,260
Commercial | Loans and Finance Receivables, Traditional Loans | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 243,553 | 181,841
Commercial | Loans and Finance Receivables, Traditional Loans | Construction | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Construction | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Construction | Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Construction | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 0 | 0
Commercial | Loans and Finance Receivables, Traditional Loans | Construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 243,553 | 181,841
Consumer: |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 7,115,038 |
Consumer: | Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,920,806 | 1,420,023
Consumer: | Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 86,988 | 102,925
Consumer: | Loans and Finance Receivables, Traditional Loans | Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,920,806 | 1,420,023
Consumer: | Loans and Finance Receivables, Traditional Loans | Single family residential mortgage | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 36,338 | 24,867
Consumer: | Loans and Finance Receivables, Traditional Loans | Single family residential mortgage | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 5,068 | 0
Consumer: | Loans and Finance Receivables, Traditional Loans | Single family residential mortgage | Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 19,431 | 7,076
Consumer: | Loans and Finance Receivables, Traditional Loans | Single family residential mortgage | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 60,837 | 31,943
Consumer: | Loans and Finance Receivables, Traditional Loans | Single family residential mortgage | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 1,859,969 | 1,388,080
Consumer: | Loans and Finance Receivables, Traditional Loans | Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 86,988 | 102,925
Consumer: | Loans and Finance Receivables, Traditional Loans | Other consumer | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 163 | 449
Consumer: | Loans and Finance Receivables, Traditional Loans | Other consumer | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 16 | 0
Consumer: | Loans and Finance Receivables, Traditional Loans | Other consumer | Greater than 89 Days Past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 81 | 89
Consumer: | Loans and Finance Receivables, Traditional Loans | Other consumer | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 260 | 538
Consumer: | Loans and Finance Receivables, Traditional Loans | Other consumer | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | $ 86,728 | $ 102,387

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