Borrowings - Long-term Borrowings (Details) $ in Thousands	12 Months Ended
Dec. 31, 2024 USD ($)
Convertible \| Federal Home Loan Bank Advances [Member]
Long-term borrowings
Aggregate principal amount	$ 35,000
Fixed Rate Hybrid \| Federal Home Loan Bank Advances [Member]
Long-term borrowings
Aggregate principal amount	5,000
2030 Subordinated Notes \| Subordinated Notes
Long-term borrowings
Aggregate principal amount	20,000
Corporation repaid	$ 4,000
2030 Subordinated Notes \| Subordinated Notes \| Until September 2025
Long-term borrowings
Fixed rate (as a percent)	4.875%
Investment, Variable Interest Rate, Type [Extensible Enumeration]	cffi:ThreeMonthSecuredOvernightFinancingRateMember
2030 Subordinated Notes \| Subordinated Notes \| Thereafter
Long-term borrowings
Variable rate, basis spread (as a percent)	475.50%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets before its maturity.

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