Loans - Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loans on nonaccrual status
Loans on nonaccrual status	$ 1,511	$ 2,213
Real estate - residential mortgage
Loans on nonaccrual status
Loans on nonaccrual status	563	594
Commercial, financial and agricultural | Commercial business lending
Loans on nonaccrual status
Loans on nonaccrual status		24
Equity lines
Loans on nonaccrual status
Loans on nonaccrual status	302	883
Consumer
Loans on nonaccrual status
Loans on nonaccrual status	119
Consumer finance
Loans on nonaccrual status
Loans on nonaccrual status	$ 527	$ 712