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Loans Receivable and Allowance for Credit Losses - Loan Portfolio (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | $ 755,671 |  | $ 848,859 |  |  |
Allowance for credit losses | (14,984) | $ (14,989) | (15,925) | $ (25,668) | $ (24,098) | $ (10,310)
Loans receivable, net | 740,687 |  | 832,934 |  |  |
Commercial Real Estate |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 452,155 |  | 472,093 |  |  |
Allowance for credit losses | (9,045) | (7,958) | (6,089) | (13,360) | (10,039) | (6,966)
Residential Real Estate |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 94,579 |  | 106,783 |  |  |
Allowance for credit losses | (608) | (678) | (607) | (1,088) | (1,027) | (665)
Commercial and Industrial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 134,333 |  | 163,565 |  |  |
Allowance for credit losses | (1,056) | (1,215) | (1,269) | (1,408) | (1,673) | (1,403)
Consumer and Other |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 68,418 |  | 99,688 |  |  |
Allowance for credit losses | (4,273) | (5,133) | (7,843) | (9,696) | (11,275) | (1,207)
Construction |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 3,829 |  | 4,266 |  |  |
Allowance for credit losses | (2) | (5) | (4) | (2) | (33) | (24)
Construction to Permanent - CRE |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 2,357 |  | 2,464 |  |  |
Allowance for credit losses | $ 0 | $ 0 | $ (113) | $ (114) | $ (51) | $ (10)

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