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Loans (Credit Quality Indicators and Loan Grade) (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   $ 7,198,438
Recorded Investment $ 7,035,646 7,177,785
Commercial Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   4,129,121
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 610,820  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,082,904  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 578,734  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 343,343  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 234,611  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 621,403  
Financing Receivable, Excluding Accrued Interest, Revolving 516,597  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,988,412  
Consumer [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 547,194  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 913,491  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 485,815  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 252,615  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 168,701  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 504,490  
Financing Receivable, Excluding Accrued Interest, Revolving 174,928  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,047,234  
Construction Real Estate Commercial [Domain]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   227,563
Recorded Investment 210,681 226,991
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 37,121  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 93,626  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 45,357  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 7,423  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,547  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,041  
Financing Receivable, Excluding Accrued Interest, Revolving 18,566  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 210,681  
Residential Real Estate Commercial [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   527,383
Recorded Investment 517,114 526,222
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 72,004  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 175,067  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 70,892  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 54,008  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 32,736  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 97,169  
Financing Receivable, Excluding Accrued Interest, Revolving 15,238  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 517,114  
Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   24,452
Residential Real Estate - Installment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   8,458
Recorded Investment 6,911 8,436
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 94  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 647  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 205  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,419  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 4,546  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,911  
Construction Real Estate Retail    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   116,665
Recorded Investment 118,819 116,430
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 26,301  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 74,144  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 10,309  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,450  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,976  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,561  
Financing Receivable, Excluding Accrued Interest, Revolving 78  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 118,819  
Residential Real Estate - Mortgage [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,097,305
Recorded Investment 1,062,865 1,096,358
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 145,384  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 217,356  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 138,698  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 87,343  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 71,910  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 402,174  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,062,865  
Residential Real Estate - HELOC [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   182,675
Recorded Investment 167,522 182,028
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 86  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 23  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 122  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 4,852  
Financing Receivable, Excluding Accrued Interest, Revolving 162,439  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 167,522  
Commercial, Financial, and Agricultural [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,595,517
Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,754,206
Recorded Investment [1] 1,777,806 1,748,189
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 192,250  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 478,534  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 321,778  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 203,193  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 143,676  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 426,004  
Financing Receivable, Excluding Accrued Interest, Revolving 12,371  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,777,806  
Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   24,452
Recorded Investment 22,673 24,438
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 3,970  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 7,825  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 4,967  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,214  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,242  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,455  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 22,673  
PPP loans receivable [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Recorded Investment 248,880  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 175,025  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 73,855  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 248,880  
Check loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Recorded Investment 2,082  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 2,082  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,082  
GFSC loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Recorded Investment 3,750  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 457  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,306  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 740  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 203  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year (101)  
Financing Receivable, Excluding Accrued Interest, Revolving 145  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,750  
Bank Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Recorded Investment 1,536  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,536  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,536  
Consumer [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,664,214
Recorded Investment 1,689,581 1,659,704
Commercial Financial Agricultural less PPP and Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Recorded Investment 1,211,258  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 130,450  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 253,997  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 135,740  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 75,505  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 54,410  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 90,734  
Financing Receivable, Excluding Accrued Interest, Revolving 470,422  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,211,258  
Consumer less GFSC and Check Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Recorded Investment 1,683,749  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 373,973  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 621,440  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 333,769  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 160,854  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 93,071  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 90,458  
Financing Receivable, Excluding Accrued Interest, Revolving 10,184  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,683,749  
5 Rated [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   103,370
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,701  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 12,406  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 37,072  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 11,475  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 7,262  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 21,760  
Financing Receivable, Excluding Accrued Interest, Revolving 8,956  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 100,632  
5 Rated [Member] | Construction Real Estate Commercial [Domain]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   164
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,913  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 98  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,011  
5 Rated [Member] | Residential Real Estate Commercial [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   798
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 108  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 81  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 332  
Financing Receivable, Excluding Accrued Interest, Revolving 277  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 798  
5 Rated [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   331
5 Rated [Member] | Commercial, Financial, and Agricultural [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   14,638
5 Rated [Member] | Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   87,439
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,601  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 7,656  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 36,032  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 10,743  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 7,063  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 21,408  
Financing Receivable, Excluding Accrued Interest, Revolving 3,590  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 88,093  
5 Rated [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
5 Rated [Member] | PPP loans receivable [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
5 Rated [Member] | Commercial Financial Agricultural less PPP and Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 100  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,837  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 834  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 651  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 199  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 20  
Financing Receivable, Excluding Accrued Interest, Revolving 5,089  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 8,730  
6 Rated [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   139
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,748  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 6,208  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 7,829  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 18,663  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 12,546  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 29,008  
Financing Receivable, Excluding Accrued Interest, Revolving 1,941  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 77,943  
6 Rated [Member] | Construction Real Estate Commercial [Domain]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 57  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 8  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 976  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 297  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,338  
6 Rated [Member] | Residential Real Estate Commercial [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   22
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 502  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 23  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 712  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,399  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,353  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,033  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 7,022  
6 Rated [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   0
6 Rated [Member] | Commercial, Financial, and Agricultural [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   0
6 Rated [Member] | Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   117
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 207  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,908  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 6,541  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 12,912  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 10,427  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 19,810  
Financing Receivable, Excluding Accrued Interest, Revolving 442  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 54,247  
6 Rated [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 426  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 210  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 74  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 25  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 36  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 771  
6 Rated [Member] | PPP loans receivable [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
6 Rated [Member] | Commercial Financial Agricultural less PPP and Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,039  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,794  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 358  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,302  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 741  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 8,129  
Financing Receivable, Excluding Accrued Interest, Revolving 1,202  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 14,565  
Impaired [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   108,499
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,257  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 532  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 393  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 571  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,051  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,307  
Financing Receivable, Excluding Accrued Interest, Revolving 708  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,819  
Impaired [Member] | Construction Real Estate Commercial [Domain]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   3,110
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
Impaired [Member] | Residential Real Estate Commercial [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   4,557
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 42  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 136  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 178  
Impaired [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,595
Impaired [Member] | Commercial, Financial, and Agricultural [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   28,880
Impaired [Member] | Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   70,357
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 60  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 509  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 569  
Impaired [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 491  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 172  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 37  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 53  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 68  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 821  
Impaired [Member] | PPP loans receivable [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
Impaired [Member] | Commercial Financial Agricultural less PPP and Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,257  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 41  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 221  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 492  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,938  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 730  
Financing Receivable, Excluding Accrued Interest, Revolving 572  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 5,251  
Purchased credit impaired [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   10,422
Purchased credit impaired [Member] | Construction Real Estate Commercial [Domain]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,002
Purchased credit impaired [Member] | Residential Real Estate Commercial [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,510
Purchased credit impaired [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   112
Purchased credit impaired [Member] | Commercial, Financial, and Agricultural [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   337
Purchased credit impaired [Member] | Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   7,461
Pass Rated [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   3,906,691
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 606,114  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,063,758  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 533,440  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 312,634  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 212,752  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 569,328  
Financing Receivable, Excluding Accrued Interest, Revolving 504,992  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,803,018  
Pass Rated [Member] | Construction Real Estate Commercial [Domain]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   223,287
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 37,121  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 90,656  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 45,251  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 6,447  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,547  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,041  
Financing Receivable, Excluding Accrued Interest, Revolving 18,269  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 206,332  
Pass Rated [Member] | Residential Real Estate Commercial [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   520,496
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 71,502  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 175,044  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 70,072  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 50,486  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 31,383  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 95,804  
Financing Receivable, Excluding Accrued Interest, Revolving 14,825  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 509,116  
Pass Rated [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   22,414
Pass Rated [Member] | Commercial, Financial, and Agricultural [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   1,551,662
Pass Rated [Member] | Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and Leases Receivable, Recorded Investment   $ 1,588,832
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 190,442  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 466,970  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 279,205  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 179,538  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 126,126  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 384,277  
Financing Receivable, Excluding Accrued Interest, Revolving 8,339  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,634,897  
Pass Rated [Member] | Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 3,970  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 6,908  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 4,585  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,103  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,164  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,351  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 21,081  
Pass Rated [Member] | PPP loans receivable [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 175,025  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 73,855  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 248,880  
Pass Rated [Member] | Commercial Financial Agricultural less PPP and Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 128,054  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 250,325  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 134,327  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 73,060  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 51,532  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 81,855  
Financing Receivable, Excluding Accrued Interest, Revolving 463,559  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,182,712  
Nonperforming Financial Instruments [Member] | Consumer [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 40  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 497  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,488  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,530  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,429  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 22,374  
Financing Receivable, Excluding Accrued Interest, Revolving 402  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 27,760  
Nonperforming Financial Instruments [Member] | Residential Real Estate - Installment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 15  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 46  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 90  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,639  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,792  
Nonperforming Financial Instruments [Member] | Construction Real Estate Retail    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 16  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 23  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 39  
Nonperforming Financial Instruments [Member] | Residential Real Estate - Mortgage [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 703  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 981  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 979  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 18,086  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 20,749  
Nonperforming Financial Instruments [Member] | Residential Real Estate - HELOC [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 74  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,853  
Financing Receivable, Excluding Accrued Interest, Revolving 402  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,329  
Nonperforming Financial Instruments [Member] | Check loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
Nonperforming Financial Instruments [Member] | GFSC loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 19  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 96  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 53  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 22  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 5  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 195  
Nonperforming Financial Instruments [Member] | Bank Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
Nonperforming Financial Instruments [Member] | Consumer less GFSC and Check Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 40  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 463  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 687  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 450  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 248  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 768  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,656  
Performing Financial Instruments [Member] | Consumer [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 547,154  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 912,994  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 484,327  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 251,085  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 167,272  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 482,116  
Financing Receivable, Excluding Accrued Interest, Revolving 174,526  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,019,474  
Performing Financial Instruments [Member] | Residential Real Estate - Installment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 79  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 645  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 159  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,329  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,907  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 5,119  
Performing Financial Instruments [Member] | Construction Real Estate Retail    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 26,301  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 74,144  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 10,309  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,450  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,960  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,538  
Financing Receivable, Excluding Accrued Interest, Revolving 78  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 118,780  
Performing Financial Instruments [Member] | Residential Real Estate - Mortgage [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 145,384  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 217,356  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 137,995  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 86,362  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 70,931  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 384,088  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,042,116  
Performing Financial Instruments [Member] | Residential Real Estate - HELOC [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 86  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 23  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 48  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,999  
Financing Receivable, Excluding Accrued Interest, Revolving 162,037  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 165,193  
Performing Financial Instruments [Member] | Check loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 2,082  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,082  
Performing Financial Instruments [Member] | GFSC loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 438  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,210  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 687  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 181  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year (106)  
Financing Receivable, Excluding Accrued Interest, Revolving 145  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,555  
Performing Financial Instruments [Member] | Bank Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,536  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,536  
Performing Financial Instruments [Member] | Consumer less GFSC and Check Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 373,933  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 620,977  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 333,082  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 160,404  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 92,823  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 89,690  
Financing Receivable, Excluding Accrued Interest, Revolving 10,184  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss $ 1,681,093  
[1] Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that were not broken out by class.(2) Results for reporting periods beginning after January 1, 2021 are presented under ASC 326, while prior period amounts continue to be reported in accordance with previously applicable U.S. GAAP. Category was not broken out as a separate class at December 31, 2020.