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Loans Receivable, Net - Additional Information (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 USD ($) loan | Sep. 30, 2020 loan | Sep. 30, 2021 USD ($) loan | Sep. 30, 2020 loan | Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing receivables 90 days past due and still accruing |  |  |  |  | $ 0
Troubled debt restructured loans | $ 19,600,000 |  | $ 19,600,000 |  | 17,500,000
Non-accrual loan total troubled debt restructurings |  |  | 10,000,000 |  | 5,500,000
Specific reserves to loans accruing troubled debt restructurings | 0 |  | 0 |  | 0
Troubled debt restructured loans with accrual interest | 9,600,000 |  | 9,600,000 |  | 12,000,000
Commercial and industrial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Recorded investment in mortgage and consumer loans collateralized, foreclosure amount | 416,000 |  | 416,000 |  | 1,900,000
Commercial real estate – owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Recorded investment in mortgage and consumer loans collateralized, foreclosure amount | $ 12,500,000 |  | $ 12,500,000 |  | 13,800,000
Number of Loans | loan | 1 |  | 1 | 1 |
Commercial Real Estate – Investor |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Recorded investment in mortgage and consumer loans collateralized, foreclosure amount | $ 8,500,000 |  | $ 8,500,000 |  | 18,300,000
Residential real estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Recorded investment in mortgage and consumer loans collateralized, foreclosure amount | 669,000 |  | 669,000 |  | 1,400,000
Foreclosed property held | $ 106,000 |  | $ 106,000 |  | $ 106,000
Number of Loans | loan |  | 1 | 3 | 5 |
Commercial real estate – investor |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Number of Loans | loan |  | 1 | 1 | 1 |
Investor loan |  |  | $ 923,000 |  |

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- Definition Financing Receivable Recorded Investment Equal To Greater Than 90 Days Past Due And Still Accruing + References No definition available. + Details
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