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Loans Schedule of loans individually evaluated for impairment by class of loan (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | $ 4,175 | $ 2,240 |
Impaired Financing Receivable, Recorded Investment | 78,341 | 74,502 | $ 108,455
Impaired Financing Receivable, Interest Income, Cash Basis Method | 1,795 | 2,770 | 2,879
6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 49,091 | 66,824 |
business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 8,524 | 14,614 |
Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 23,125 | 213 |
Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 80,740 | 81,651 |
Commercial Financial And Agricultural [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  |  | 28,836
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |  | 735
Commercial Financial And Agricultural [Member] | 6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 8,242 | 9,321 |
Commercial Financial And Agricultural [Member] | business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 7,788 | 13,366 |
Commercial Financial And Agricultural [Member] | Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 23,125 | 156 |
Commercial Financial And Agricultural [Member] | Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 39,155 | 22,843 |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  |  | 70,357
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |  | 1,890
Commercial Real Estate Portfolio Segment [Member] | 6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 35,908 | 52,901 |
Commercial Real Estate Portfolio Segment [Member] | business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 28 | 37 |
Commercial Real Estate Portfolio Segment [Member] | Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 35,936 | 52,938 |
Construction Real Estate Remaining Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  |  | 3,110
Impaired Financing Receivable, Interest Income, Cash Basis Method | 32 | 39 | 50
Construction Real Estate Remaining Commercial [Member] | 6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 2,372 | 1,178 |
Construction Real Estate Remaining Commercial [Member] | business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Construction Real Estate Remaining Commercial [Member] | Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Construction Real Estate Remaining Commercial [Member] | Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 2,372 | 1,178 |
Residential Real Estate Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  |  | 4,557
Impaired Financing Receivable, Interest Income, Cash Basis Method | 88 | 204 | 204
Residential Real Estate Commercial [Member] | 6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 2,479 | 2,906 |
Residential Real Estate Commercial [Member] | business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Residential Real Estate Commercial [Member] | Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 57 |
Residential Real Estate Commercial [Member] | Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 2,479 | 2,963 |
Finance Leases Portfolio Segment [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  |  | $ 1,595
Impaired Financing Receivable, Interest Income, Cash Basis Method | 33 | 73 |
Finance Leases Portfolio Segment [Member] | 6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Finance Leases Portfolio Segment [Member] | business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 708 | 1,211 |
Finance Leases Portfolio Segment [Member] | Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Finance Leases Portfolio Segment [Member] | Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 708 | 1,211 |
Residential Real Estate Mortgage [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 157 | 301 |
Residential Real Estate Mortgage [Member] | 6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 90 | 370 |
Residential Real Estate Mortgage [Member] | business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Residential Real Estate Mortgage [Member] | Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 0 | 0 |
Residential Real Estate Mortgage [Member] | Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost | 90 | 370 |
Residential Real Estate Home Equity Line Of Credit [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 16 | 17 |
Residential Real Estate Home Equity Line Of Credit [Member] | 6500 Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost |  | 148 |
Residential Real Estate Home Equity Line Of Credit [Member] | business assets |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost |  | 0 |
Residential Real Estate Home Equity Line Of Credit [Member] | Other Collateral |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost |  | 0 |
Residential Real Estate Home Equity Line Of Credit [Member] | Collateral Pledged |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable Amortized Cost |  | 148 |
commercial financial agricultural less PPP and overdraft |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 438 | 180 |
PPP Loans |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 0 | 0 |
Bank Overdrafts |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 0 | 0 |
Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 956 | 1,844 |
Construction Real Estate Retail |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 13 | 4 |
Residential Real Estate Installment [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 3 | 2 |
Consumer Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 54 | 92 |
GFSC loans |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | $ 5 | $ 14 |

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