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Loans and Allowance for Credit Losses - Collateral Loan (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | --- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  | $ 20,361 |  |  |  |
Allowance Allocated | $ 22,462 | [1] | $ 22,236 | 15,588 | [1] | $ 15,505 | $ 15,353 | $ 16,903
Real estate mortgage − residential |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  | 1,863 |  |  |  |
Allowance Allocated | 5,314 |  | 5,465 | 3,329 |  | 3,232 | 2,747 | 2,482
Real estate mortgage − commercial |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  | 18,110 |  |  |  |
Allowance Allocated | 10,733 |  | $ 10,295 | $ 8,000 |  | $ 8,002 | $ 8,410 | $ 10,662
Real Estate |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment | 2,574 |  |  |  |  |  |  |
Real Estate | Real estate mortgage − residential |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment | 142 |  |  |  |  |  |  |
Real Estate | Real estate mortgage − commercial |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment | 2,432 |  |  |  |  |  |  |
Other |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |  |  |
Other | Real estate mortgage − residential |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |  |  |
Other | Real estate mortgage − commercial |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |  |  |
Allowance Allocated |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Allowance Allocated | 22 |  |  |  |  |  |  |
Allowance Allocated | Real estate mortgage − residential |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Allowance Allocated | 22 |  |  |  |  |  |  |
Allowance Allocated | Real estate mortgage − commercial |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Allowance Allocated | $ 0 |  |  |  |  |  |  |
[1] | amounts include the impacts of the January 1, 2023 adoption of ASU 2016-13. See Note 2 for details.See accompanying notes to the consolidated financial statements (unaudited)

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