Loans - Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income That Would Have Been Recorded Based on Original Term and Rate	$ 56	$ 144	$ 118	$ 294
Interest Income Recorded on a Cash Basis	3	99	3	203
Commercial, financial, and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income That Would Have Been Recorded Based on Original Term and Rate	26	33	35	57
Interest Income Recorded on a Cash Basis	0	44	0	83
Real Estate Mortgages | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income That Would Have Been Recorded Based on Original Term and Rate	4	33	13	66
Interest Income Recorded on a Cash Basis	0	19	0	42
Real Estate Mortgages | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income That Would Have Been Recorded Based on Original Term and Rate	22	76	64	165
Interest Income Recorded on a Cash Basis	0	34	0	74
Real Estate Mortgages | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income That Would Have Been Recorded Based on Original Term and Rate	1	1	1	2
Interest Income Recorded on a Cash Basis	0	1	0	2
Consumer automobile loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income That Would Have Been Recorded Based on Original Term and Rate	0	1	2	3
Interest Income Recorded on a Cash Basis	3	1	3	2
Other consumer installment loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income That Would Have Been Recorded Based on Original Term and Rate	3	0	3	1
Interest Income Recorded on a Cash Basis	$ 0	$ 0	$ 0	$ 0