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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, 2021
Dec. 31, 2020
Dec. 31, 2019
Components of net periodic benefit cost      
Net periodic benefit cost $ 2,131 $ 793 $ 649
C&F Bank | Cash Balance Plan      
Components of net periodic benefit cost      
Service cost, included in salaries and employee benefits 1,970 1,603 1,218
Interest cost 458 551 609
Expected return on plan assets (1,733) (1,492) (1,297)
Amortization of prior service credit (68) (66) (68)
Pension settlement charges 1,261    
Recognized net actuarial losses 243 197 187
Other components of net periodic benefit cost, included in other noninterest expense 161 (810) (569)
Net periodic benefit cost $ 2,131 $ 793 $ 649