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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2021
Accounting Policies [Abstract] |
Schedule of Financing Receivable Portfolio Segments | The Company has identified the following portfolio segments to measure the allowance for credit losses. For all segments the economic forecast length is one year and reversion method is one year.
Loan Segment |  | Historical Lifetime Loss Method |  | Historical Lookback Period |  | Economic Forecast Length |  | Reversion Method
Construction |  | Probability of Default/Loss Given Default ("PD/LGD") |  | 2008-Present |  | One Year |  | One Year (straight-line basis)
Commercial real estate |  | PD/LGD |  | 2008-Present |  |
Multi-family mortgage |  | PD/LGD |  | 2008-Present |  |
Commercial, financial and agricultural |  | PD/LGD |  | 2008-Present |  |
Home equity lines of credit |  | Loss-Rate Migration |  | 2008-Present |  |
Residential mortgage |  | Loss-Rate Migration |  | 2008-Present |  |
Consumer - other revolving |  | Loss-Rate Migration |  | 2008-Present |  |
Consumer - non-revolving |  | Loss-Rate Migration |  | 2008-Present |  |
Purchased Mainland portfolios (Dealer, Other consumer) |  | Weighted-Average Remaining Maturity ("WARM") |  | 2008-Present |  |

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