Loans - Schedule of Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on nonaccrual status	$ 23,287	$ 8,920
Commercial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on nonaccrual status	15,630	3,599
Real estate – construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on nonaccrual status	468	278
Real estate – commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on nonaccrual status	4,854	2,977
Real estate – residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on nonaccrual status	2,308	2,008
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on nonaccrual status	$ 27	$ 58