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Employee Benefit Plans - Defined Benefit Plans - Components of Net Periodic Pension Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Components of net periodic benefit cost      
Net periodic benefit cost $ 649 $ 403 $ 627
C&F Bank | Cash Balance Plan      
Components of net periodic benefit cost      
Service cost, included in salaries and employee benefits 1,218 1,232 1,120
Interest cost 609 521 552
Expected return on plan assets (1,297) (1,413) (1,138)
Amortization of prior service credit (68) (62) (61)
Recognized net actuarial losses 187 125 154
Other components of net periodic benefit cost, included in other noninterest income (569) (829) (493)
Net periodic benefit cost $ 649 $ 403 $ 627