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Loans Recorded investment by loan grade (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss $ 7,141,891 $ 6,871,122 $ 7,177,785
Construction Real Estate Commercial [Domain]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   97,131  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   76,919  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   7,003  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   5,796  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   1,856  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   3,412  
Financing Receivable, Excluding Accrued Interest, Revolving   22,444  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   214,561  
Residential Real Estate Commercial [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   139,687  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   166,108  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   68,718  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   45,016  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   26,678  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   71,924  
Financing Receivable, Excluding Accrued Interest, Revolving   15,671  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   533,802  
Construction Real Estate Retail      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   68,374  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   26,894  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   5,767  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   2,743  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   1,505  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   1,863  
Financing Receivable, Excluding Accrued Interest, Revolving   79  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   107,225  
Residential Real Estate Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   230,299  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   217,648  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   114,862  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   69,598  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   60,513  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   340,738  
Financing Receivable, Excluding Accrued Interest, Revolving   0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,033,658  
Residential Real Estate Home Equity Line Of Credit [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   489  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   40  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   121  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   95  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   131  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   4,451  
Financing Receivable, Excluding Accrued Interest, Revolving   160,278  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   165,605  
Residential Real Estate Installment [Member]      
Financing Receivable, Impaired [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   423  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   137  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   1,127  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   3,940  
Financing Receivable, Excluding Accrued Interest, Revolving   0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   5,642  
Commercial Financial And Agricultural [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   268,730  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   210,606  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   102,031  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   54,336  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   37,817  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   67,852  
Financing Receivable, Excluding Accrued Interest, Revolving   481,707  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,223,079  
Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   963,190  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   919,567  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   479,032  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   282,769  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   193,000  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   494,470  
Financing Receivable, Excluding Accrued Interest, Revolving   536,158  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   3,868,186  
Consumer Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   950,168  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   750,910  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   382,217  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   192,491  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   128,202  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   413,726  
Financing Receivable, Excluding Accrued Interest, Revolving   185,222  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   3,002,936  
Nonperforming Financial Instruments [Member] | Construction Real Estate Retail      
Financing Receivable, Impaired [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   647  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   57  
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   21  
Financing Receivable, Excluding Accrued Interest, Revolving   0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   725  
Nonperforming Financial Instruments [Member] | Residential Real Estate Mortgage [Member]      
Financing Receivable, Impaired [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   626  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   785  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   824  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   574  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   17,060  
Financing Receivable, Excluding Accrued Interest, Revolving   0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   19,869  
Nonperforming Financial Instruments [Member] | Residential Real Estate Home Equity Line Of Credit [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   89  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   40  
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   37  
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   1,811  
Financing Receivable, Excluding Accrued Interest, Revolving   326  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   2,393  
Nonperforming Financial Instruments [Member] | Residential Real Estate Installment [Member]      
Financing Receivable, Impaired [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   12  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   5  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   26  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   78  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   1,469  
Financing Receivable, Excluding Accrued Interest, Revolving   0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,590  
Nonperforming Financial Instruments [Member] | Consumer Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   330  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   1,840  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   1,675  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   1,291  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   906  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   20,954  
Financing Receivable, Excluding Accrued Interest, Revolving   326  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   27,322  
Performing Financial Instruments [Member] | Construction Real Estate Retail      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   68,374  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   26,247  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   5,710  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   2,743  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   1,505  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   1,842  
Financing Receivable, Excluding Accrued Interest, Revolving   79  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   106,500  
Performing Financial Instruments [Member] | Residential Real Estate Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   230,299  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   217,022  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   114,077  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   68,774  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   59,939  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   323,678  
Financing Receivable, Excluding Accrued Interest, Revolving   0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,013,789  
Performing Financial Instruments [Member] | Residential Real Estate Home Equity Line Of Credit [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   400  
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   121  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   58  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   41  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   2,640  
Financing Receivable, Excluding Accrued Interest, Revolving   159,952  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   163,212  
Performing Financial Instruments [Member] | Residential Real Estate Installment [Member]      
Financing Receivable, Impaired [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   3  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   418  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   111  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   1,049  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   2,471  
Financing Receivable, Excluding Accrued Interest, Revolving   0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   4,052  
Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   949,838  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   749,070  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   380,542  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   191,200  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   127,296  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   392,772  
Financing Receivable, Excluding Accrued Interest, Revolving   184,896  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   2,975,614  
Five Rated [Member] | Construction Real Estate Commercial [Domain]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   202  
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   691  
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   893  
Five Rated [Member] | Residential Real Estate Commercial [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   95  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   884  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   106  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   79  
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   497  
Financing Receivable, Excluding Accrued Interest, Revolving   135  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,796  
Five Rated [Member] | Commercial Financial And Agricultural [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   1,608  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   1,592  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   429  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   59  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   277  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   0  
Financing Receivable, Excluding Accrued Interest, Revolving   11,986  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   15,951  
Five Rated [Member] | Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   2,889  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   8,793  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   33,684  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   10,250  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   4,595  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   18,326  
Financing Receivable, Excluding Accrued Interest, Revolving   13,117  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   91,654  
Six Rated [Member] | Construction Real Estate Commercial [Domain]      
Financing Receivable, Impaired [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   52  
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   264  
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   316  
Six Rated [Member] | Residential Real Estate Commercial [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   735  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   22  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   691  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   41  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   95  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   993  
Financing Receivable, Excluding Accrued Interest, Revolving   29  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   2,606  
Six Rated [Member] | Commercial Financial And Agricultural [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   106  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   906  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   401  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   1,345  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   549  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   7,818  
Financing Receivable, Excluding Accrued Interest, Revolving   484  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   11,609  
Six Rated [Member] | Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   4,738  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   4,256  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   2,477  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   13,046  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   6,630  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   23,430  
Financing Receivable, Excluding Accrued Interest, Revolving   963  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   55,540  
Impaired [Member] | Construction Real Estate Commercial [Domain]      
Financing Receivable, Impaired [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] | Residential Real Estate Commercial [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   56  
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   56  
Impaired [Member] | Commercial Financial And Agricultural [Member]      
Financing Receivable, Impaired [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   30  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   465  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   227  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   463  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   125  
Financing Receivable, Excluding Accrued Interest, Revolving   488  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,798  
Impaired [Member] | Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   56  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   30  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   797  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   243  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   532  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   743  
Financing Receivable, Excluding Accrued Interest, Revolving   488  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   2,889  
Pass [Member] | Construction Real Estate Commercial [Domain]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   96,929  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   76,867  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   7,003  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   4,841  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   1,856  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   3,412  
Financing Receivable, Excluding Accrued Interest, Revolving   22,444  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   213,352  
Pass [Member] | Residential Real Estate Commercial [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   138,801  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   165,202  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   67,921  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   44,896  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   26,583  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   70,434  
Financing Receivable, Excluding Accrued Interest, Revolving   15,507  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   529,344  
Pass [Member] | Commercial Financial And Agricultural [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   267,016  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   208,078  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   100,736  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   52,705  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   36,528  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   59,909  
Financing Receivable, Excluding Accrued Interest, Revolving   468,749  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,193,721  
Pass [Member] | Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   955,507  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   906,488  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year   442,074  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year   259,230  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year   181,243  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year   451,971  
Financing Receivable, Excluding Accrued Interest, Revolving   521,590  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   3,718,103  
Commercial Real Estate Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 331,290 381,151  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 379,446 454,564  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 379,048 298,136  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 229,496 175,364  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 126,323 125,882  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 333,821 350,359  
Financing Receivable, Excluding Accrued Interest, Revolving 14,630 16,336  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,794,054 1,801,792  
Commercial Real Estate Portfolio Segment [Member] | Five Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 199 786  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,256 6,206  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 3,388 32,965  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 5,863 9,354  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 16,059 4,297  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 22,220 17,829  
Financing Receivable, Excluding Accrued Interest, Revolving 150 996  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 51,135 72,433  
Commercial Real Estate Portfolio Segment [Member] | Six Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 7,856 3,897  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,427 2,578  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 3,007 1,385  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,561 11,373  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 856 5,967  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 5,471 14,541  
Financing Receivable, Excluding Accrued Interest, Revolving 428 450  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 22,606 40,191  
Commercial Real Estate Portfolio Segment [Member] | Impaired [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,941 47  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 591 618  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,532 665  
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 323,235 376,468  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 374,763 445,780  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 372,653 263,786  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 220,072 154,637  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 107,467 115,571  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 305,539 317,371  
Financing Receivable, Excluding Accrued Interest, Revolving 14,052 14,890  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,717,781 1,688,503  
Construction Real Estate Remaining Commercial [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 108,628    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 41,334    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 22,048    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,686    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,088    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,015    
Financing Receivable, Excluding Accrued Interest, Revolving 29,183    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 208,982 214,561  
Construction Real Estate Remaining Commercial [Member] | Five Rated [Member]      
Financing Receivable, Impaired [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 232    
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 232    
Construction Real Estate Remaining Commercial [Member] | Six Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 652    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 800    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 260    
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 660    
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 2,372    
Construction Real Estate Remaining Commercial [Member] | Impaired [Member]      
Financing Receivable, Impaired [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    
Construction Real Estate Remaining Commercial [Member] | Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 107,976    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 40,534    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 21,556    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,686    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,428    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,015    
Financing Receivable, Excluding Accrued Interest, Revolving 29,183    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 206,378    
Residential Real Estate Commercial [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 107,696    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 120,844    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 149,543    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 57,449    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 33,444    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 65,677    
Financing Receivable, Excluding Accrued Interest, Revolving 15,530    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 550,183 533,802  
Residential Real Estate Commercial [Member] | Five Rated [Member]      
Financing Receivable, Impaired [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 92    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,477    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 440    
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 1,625    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,634    
Residential Real Estate Commercial [Member] | Six Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 610    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 449    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 264    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 29    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 304    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 553    
Financing Receivable, Excluding Accrued Interest, Revolving 339    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,548    
Residential Real Estate Commercial [Member] | Impaired [Member]      
Financing Receivable, Impaired [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    
Residential Real Estate Commercial [Member] | Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 107,086    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 120,303    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 147,802    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 56,980    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 33,140    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 63,499    
Financing Receivable, Excluding Accrued Interest, Revolving 15,191    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 544,001    
Finance Leases Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 8,714 6,903  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,924 6,538  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 3,941 3,144  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,434 2,257  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 993 767  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 631 923  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 19,637 20,532  
Finance Leases Portfolio Segment [Member] | Five Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,085 198  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 614 111  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 130 184  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 60 67  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 21  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,889 581  
Finance Leases Portfolio Segment [Member] | Six Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 698  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 464 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 111 23  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 12 19  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 26 78  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 613 818  
Finance Leases Portfolio Segment [Member] | Impaired [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 332  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 96 16  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 22  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 96 370  
Finance Leases Portfolio Segment [Member] | Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 7,629 6,705  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,310 5,729  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 3,347 2,628  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,167 2,151  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 981 705  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 605 845  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 17,039 18,763  
Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 755,626    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 746,753    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 703,056    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 352,528    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 197,655    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 458,910    
Financing Receivable, Excluding Accrued Interest, Revolving 657,772    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,872,300    
Commercial Portfolio Segment [Member] | Five Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,984    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 4,275    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 6,145    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 6,678    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 16,063    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 23,880    
Financing Receivable, Excluding Accrued Interest, Revolving 25,686    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 84,711    
Commercial Portfolio Segment [Member] | Six Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 10,219    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,694    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 6,732    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,927    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 3,668    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 14,474    
Financing Receivable, Excluding Accrued Interest, Revolving 27,231    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 68,945    
Commercial Portfolio Segment [Member] | Impaired [Member]      
Financing Receivable, Impaired [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 3    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 173    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,021    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 763    
Financing Receivable, Excluding Accrued Interest, Revolving 192    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,152    
Commercial Portfolio Segment [Member] | Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 743,423    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 739,784    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 690,176    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 341,750    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 175,903    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 419,793    
Financing Receivable, Excluding Accrued Interest, Revolving 604,663    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,715,492    
commercial financial agricultural less PPP and overdraft      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 199,298    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 199,330    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 146,145    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 61,463    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 34,807    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 55,766    
Financing Receivable, Excluding Accrued Interest, Revolving 598,429    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,295,238 1,223,079  
commercial financial agricultural less PPP and overdraft | Five Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 700    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 313    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 918    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 315    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 4    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 35    
Financing Receivable, Excluding Accrued Interest, Revolving 25,536    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 27,821    
commercial financial agricultural less PPP and overdraft | Six Rated [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,101    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 18    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,737    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 226    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,836    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 8,424    
Financing Receivable, Excluding Accrued Interest, Revolving 26,464    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 40,806    
commercial financial agricultural less PPP and overdraft | Impaired [Member]      
Financing Receivable, Impaired [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 3    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 77    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 80    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 172    
Financing Receivable, Excluding Accrued Interest, Revolving 192    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 524    
commercial financial agricultural less PPP and overdraft | Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 197,497    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 198,999    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 142,487    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 60,845    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 32,887    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 47,135    
Financing Receivable, Excluding Accrued Interest, Revolving 546,237    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,226,087    
PPP Loans      
Financing Receivable, Impaired [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 1,875    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,331    
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 4,206 74,420  
PPP Loans | Five Rated [Member]      
Financing Receivable, Impaired [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    
PPP Loans | Six Rated [Member]      
Financing Receivable, Impaired [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    
PPP Loans | Impaired [Member]      
Financing Receivable, Impaired [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    
PPP Loans | Pass [Member]      
Financing Receivable, Impaired [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 1,875    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,331    
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 4,206    
Bank Overdrafts      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,489 1,127  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,489 1,127  
Bank Overdrafts | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0  
Bank Overdrafts | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,489 1,127  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,489 1,127  
consumer less GFSC and check loans      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 823,924 649,879  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 462,503 506,061  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 333,760 259,985  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 150,592 119,621  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 61,331 64,854  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 66,132 62,729  
Financing Receivable, Excluding Accrued Interest, Revolving 4,315 22,664  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,902,557 1,685,793  
consumer less GFSC and check loans | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 440 241  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 489 506  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 424 755  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 355 399  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 157 155  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 520 593  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,385 2,649  
consumer less GFSC and check loans | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 823,484 649,638  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 462,014 505,555  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 333,336 259,230  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 150,237 119,222  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 61,174 64,699  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 65,612 62,136  
Financing Receivable, Excluding Accrued Interest, Revolving 4,315 22,664  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,900,172 1,683,144  
Construction Real Estate Retail      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 72,654    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 26,134    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 8,741    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 4,619    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,618    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,592    
Financing Receivable, Excluding Accrued Interest, Revolving 75    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 116,433    
Construction Real Estate Retail | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 731    
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 523    
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 12    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,266    
Construction Real Estate Retail | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 71,923    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 26,134    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 8,218    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 4,619    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,618    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,580    
Financing Receivable, Excluding Accrued Interest, Revolving 75    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 115,167    
Residential Real Estate Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 207,093    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 227,131    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 193,604    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 90,664    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 56,166    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 300,788    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,075,446 1,033,658  
Residential Real Estate Mortgage [Member] | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [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 700    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 650    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 518    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 14,324    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 16,192    
Residential Real Estate Mortgage [Member] | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 207,093    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 227,131    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 192,904    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 90,014    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 55,648    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 286,464    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,059,254    
Residential Real Estate Home Equity Line Of Credit [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 140    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 299    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 66    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 230    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 141    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,956    
Financing Receivable, Excluding Accrued Interest, Revolving 163,319    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 167,151 165,605  
Residential Real Estate Home Equity Line Of Credit [Member] | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [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 43    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 100    
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 999    
Financing Receivable, Excluding Accrued Interest, Revolving 185    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,327    
Residential Real Estate Home Equity Line Of Credit [Member] | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 140    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 299    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 23    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 130    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 141    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,957    
Financing Receivable, Excluding Accrued Interest, Revolving 163,134    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 165,824    
Residential Real Estate Installment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 187    
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 8    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 243    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 78    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,575    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,091 5,642  
Residential Real Estate Installment [Member] | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [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 7    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2    
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 1,063    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,088    
Residential Real Estate Installment [Member] | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 187    
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 1    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 241    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 62    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,512    
Financing Receivable, Excluding Accrued Interest, Revolving 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,003    
GFSC loans      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 252  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 55 1,059  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 121 297  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 45 72  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2 5  
Financing Receivable, Excluding Accrued Interest, Revolving 51 108  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 274 1,793  
GFSC loans | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 9  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 73  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 10 5  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 9  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 10 96  
GFSC loans | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 243  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 55 986  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 111 292  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 45 63  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2 5  
Financing Receivable, Excluding Accrued Interest, Revolving 51 108  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 264 1,697  
Check Loans      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 2,150 2,093  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,150 2,093  
Check Loans | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0 0  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0  
Check Loans | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0 0  
Financing Receivable, Excluding Accrued Interest, Revolving 2,150 2,093  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,150 2,093  
Consumer Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,105,487    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 716,067    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 536,234    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 246,469    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 119,379    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 376,045    
Financing Receivable, Excluding Accrued Interest, Revolving 169,910    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,269,591    
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,171    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 489    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,697    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,117    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 691    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 16,918    
Financing Receivable, Excluding Accrued Interest, Revolving 185    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 22,268    
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,104,316    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 715,578    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 534,537    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 245,352    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 118,688    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 359,127    
Financing Receivable, Excluding Accrued Interest, Revolving 169,725    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss $ 3,247,323    
PPP loans receivable      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   69,588  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   4,832  
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   74,420  
PPP loans receivable | Five Rated [Member]      
Financing Receivable, Impaired [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  
PPP loans receivable | Six Rated [Member]      
Financing Receivable, Impaired [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  
PPP loans receivable | Impaired [Member]      
Financing Receivable, Impaired [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  
PPP loans receivable | Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year   69,588  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year   4,832  
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   $ 74,420