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Employee Benefit Plans - Defined Benefit Plans - Projected Benefit Obligations, Plan Assets, Funded Status and Rate Assumptions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Change in benefit obligation      
Actuarial (gain) loss $ 1,250 $ (3,000)  
Amounts recognized in accumulated other comprehensive loss      
Total recognized in accumulated other comprehensive loss 2,055 4,985  
Weighted-average assumptions for benefit obligation at valuation date      
Accumulated benefit obligation 20,250 24,640  
C&F Bank | Cash Balance Plan      
Change in benefit obligation      
Projected benefit obligation, beginning 24,643 20,794  
Service cost 1,970 1,603 $ 1,218
Interest cost 458 551 609
Actuarial (gain) loss 1,248 (2,996)  
Benefits paid (210) (1,301)  
Settlements paid (5,366)    
Projected benefit obligation, ending 20,247 24,643 20,794
Change in plan assets      
Fair value of plan assets, beginning 26,287 22,806  
Actual return on plan assets 2,759 2,782  
Employer contributions   2,000  
Benefits paid (210) (1,301)  
Settlements paid (5,366)    
Fair value of plan assets, ending 23,470 26,287 $ 22,806
Funded status 3,223 1,644  
Amounts recognized as an other asset 3,223 1,644  
Amounts recognized in accumulated other comprehensive loss      
Net loss 2,970 6,748  
Prior service credits (370) (438)  
Deferred taxes (545) (1,325)  
Total recognized in accumulated other comprehensive loss $ 2,055 $ 4,985  
Weighted-average assumptions for benefit obligation at valuation date      
Discount rate. 2.50% 2.10%  
Rate of compensation increase 3.00% 3.00%  
Interest crediting rate 5.00% 5.00%  
Settlements paid $ 5,366