Loans - Schedule of recorded investment in nonaccrual restructured and loans 90 days past due and accruing (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	$ 60,259	$ 79,696
Financing Receivable, Troubled Debt Restructuring		20,134
Financing Receivable, 90 Days or More Past Due, Still Accruing	859	1,281
Financing Receivable Recorded Investment Nonperforming	61,118	101,111
Financing Receivable, Nonaccrual, No Allowance	32,056	55,542
financing receivable nonaccrual with allowance	28,203	24,154
Impaired Financing Receivable, Related Allowance	5,801	4,175
commercial financial agricultural less PPP and overdraft
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	8,634	28,291
financing receivable nonaccrual with allowance	12,650	9,867
Impaired Financing Receivable, Related Allowance	4,985	3,440
PPP Loans
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	0	0
Financing Receivable, Troubled Debt Restructuring		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	389
Financing Receivable Recorded Investment Nonperforming	0	389
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	0	0
Impaired Financing Receivable, Related Allowance	0	0
Bank Overdrafts
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	0	0
Financing Receivable, Troubled Debt Restructuring		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable Recorded Investment Nonperforming	0	0
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	0	0
Impaired Financing Receivable, Related Allowance	0	0
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	20,175	22,965
financing receivable nonaccrual with allowance	565	1,539
Impaired Financing Receivable, Related Allowance	2	130
Construction Real Estate Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	504	1,712
Financing Receivable, Troubled Debt Restructuring		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable Recorded Investment Nonperforming	504	1,712
Financing Receivable, Nonaccrual, No Allowance	504	1,712
financing receivable nonaccrual with allowance	0	0
Impaired Financing Receivable, Related Allowance	0	0
Construction Real Estate Retail
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	0	1,254
Financing Receivable, Troubled Debt Restructuring		12
Financing Receivable, 90 Days or More Past Due, Still Accruing	26	0
Financing Receivable Recorded Investment Nonperforming	26	1,266
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	0	1,254
Impaired Financing Receivable, Related Allowance	0	19
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	2,670	1,894
Financing Receivable, Troubled Debt Restructuring		298
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable Recorded Investment Nonperforming	2,670	2,192
Financing Receivable, Nonaccrual, No Allowance	2,670	1,894
financing receivable nonaccrual with allowance	0	0
Impaired Financing Receivable, Related Allowance	0	0
Residential Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	11,786	9,260
Financing Receivable, Troubled Debt Restructuring		6,750
Financing Receivable, 90 Days or More Past Due, Still Accruing	206	182
Financing Receivable Recorded Investment Nonperforming	11,992	16,192
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	11,786	9,260
Impaired Financing Receivable, Related Allowance	117	85
Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	815	1,133
Financing Receivable, Troubled Debt Restructuring		187
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	7
Financing Receivable Recorded Investment Nonperforming	815	1,327
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	815	1,133
Impaired Financing Receivable, Related Allowance	25	191
Residential Real Estate Installment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	16	51
Financing Receivable, Troubled Debt Restructuring		1,037
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable Recorded Investment Nonperforming	16	1,088
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	16	51
Impaired Financing Receivable, Related Allowance	0	17
Consumer Loan [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	2,371	1,022
Impaired Financing Receivable, Related Allowance	672	284
Check Loans
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	0	0
Financing Receivable, Troubled Debt Restructuring		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable Recorded Investment Nonperforming	0	0
Financing Receivable, Nonaccrual, No Allowance	0	0
financing receivable nonaccrual with allowance	0	0
Impaired Financing Receivable, Related Allowance	0	0
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	73	708
Financing Receivable, Troubled Debt Restructuring		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable Recorded Investment Nonperforming	73	708
Financing Receivable, Nonaccrual, No Allowance	73	680
financing receivable nonaccrual with allowance	0	28
Impaired Financing Receivable, Related Allowance	0	9
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	21,284	38,158
Financing Receivable, Troubled Debt Restructuring		3,261
Financing Receivable, 90 Days or More Past Due, Still Accruing	14	0
Financing Receivable Recorded Investment Nonperforming	21,298	41,419
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	20,740	24,504
Financing Receivable, Troubled Debt Restructuring		7,919
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable Recorded Investment Nonperforming	20,740	32,423
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	2,371	1,022
Financing Receivable, Troubled Debt Restructuring		670
Financing Receivable, 90 Days or More Past Due, Still Accruing	613	703
Financing Receivable Recorded Investment Nonperforming	$ 2,984	$ 2,395