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v3.21.2

Borrowings - Additional Information (Details) - USD ($) |  | 9 Months Ended |
--- | --- | --- | ---
Oct. 01, 2021 | Sep. 30, 2021 | Dec. 31, 2020
Short Term Debt [Line Items] |  |  |
Short-term borrowings |  | $ 10,037,000 | $ 10,017,000
Federal Funds Purchased |  | 0 | 0
Securities Sold under Agreements to Repurchase, Total |  | 37,000 | 17,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months, Total |  | 10,000,000.0 | 10,000,000.0
Long-term Federal Home Loan Bank advances |  | 0 | 0
Subordinated Debt [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Principal amount |  | $ 0 | $ 0
Interest rate, description |  | The Notes will bear interest at a rate of 3.50% per annum for the first five years, then the interest rate will be reset quarterly to a benchmark interest rate per annum which, subject to certain conditions provided in the Notes, will be equal to the then current three-month term Secured Overnight Financing Rate (“SOFR”) plus 275 basis points. |
Variable rate, description |  | three-month term Secured Overnight Financing Rate (“SOFR”) plus 275 basis points |
Subsequent Event [Member] | Subordinated Debt [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Maturity date | Oct. 01, 2031 |  |
Loan, fixed interest rate | 3.50% |  |
Variable interest rate | 2.75% |  |
Investment into capital surplus | $ 5,000,000 |  |
Private Placement [Member] | Subsequent Event [Member] | Subordinated Debt [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Principal amount | $ 11,000,000.0 |  |
Minimum [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Maturity Period of Federal Funds |  | 1 day |
Maximum [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Maturity Period of Federal Funds |  | 4 days |

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