Commitments and Contingent Liabilities - Other (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Indemnification reserve for recourse provisions
Commitments and Contingent Liabilities
Allowance for indemnifications	$ 2,470	$ 2,540
C&F Mortgage
Commitments and Contingent Liabilities
Recourse period for early payment default, minimum	90 days
Recourse period for early payment default, maximum	1 year