Loans, Troubled Debt Restructuring with subsequent default (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) contracts	Dec. 31, 2021 USD ($) contracts	Dec. 31, 2020 USD ($) contracts
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	30	22	55
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 2,522,000	$ 1,259,000	$ 4,401,000
Commercial Financial Agricultural less PPP and Overdrafts
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	5	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 2,091,000
Construction Real Estate Commercial [Domain]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Residential Real Estate Commercial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 93,000
Residential Real Estate Mortgage [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	4	4
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 154,000	$ 280,000
Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	1	2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 10,000	$ 135,000
consumer less GFSC and check loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	19	14
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 174,000	$ 169,000
PPP loans receivable
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Bank Overdrafts
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
GFSC loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Check Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 500,000	$ 1,100,000	3,700,000
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 2,000,000	$ 115,000	$ 706,000
Commercial Financial And Agricultural [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts			4
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $			$ 2,776,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $			$ 223,000
Construction Real Estate Remaining Commercial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts			0
Construction Real Estate Mortgage [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 0	$ 648,000
Residential Real Estate Commercial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts			1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $			$ 3,000
Residential Real Estate Mortgage [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts			11
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $			$ 993,000
Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts			0
Residential Real Estate Installment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	1	3
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 0	$ 27,000	$ 32,000
Consumer Loan [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts			34
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $			$ 360,000
Finance Leases Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 0	$ 0
Construction Real Estate Retail
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts			1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $			$ 14,000