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Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans $ 96,760 $ 117,368
Accruing restructured loans 17,420 20,888
Loans past due 90 days or more and accruing 515 1,594
Total nonperforming loans 114,695 139,850
Accruing loans past due 30-89 days 13,423 23,652
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 20,601 [1] 26,364 [2]
Loan balance 7,035,646 7,177,785
Loans and Leases Receivable, Recorded Investment   7,198,438
Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 34,024 50,016
Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 7,001,622 7,148,422
Loan balance 7,035,646  
Commercial Financial And Agricultural [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans   23,261
Accruing restructured loans   5,619
Total nonperforming loans   28,880
Accruing loans past due 30-89 days   7,372
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans [2]   13,968
Commercial Financial And Agricultural [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   21,340
Commercial Financial And Agricultural [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,574,177
Construction Real Estate Commercial [Domain]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 361 3,110
Accruing restructured loans 98 0
Loans past due 90 days or more and accruing 0 0
Total nonperforming loans 459 3,110
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 210,681  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 37,121  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 93,626  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 45,357  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 7,423  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,547  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,041  
Financing Receivable, Excluding Accrued Interest, Revolving 18,566  
Accruing loans past due 30-89 days 815  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans [2]   39
Loans and Leases Receivable, Recorded Investment   227,563
Construction Real Estate Commercial [Domain] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 815 39
Construction Real Estate Commercial [Domain] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 209,866 227,524
Loan balance 210,681  
Construction Real Estate - Mortgage [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans   14
Accruing restructured loans   31
Loans past due 90 days or more and accruing   0
Total nonperforming loans   45
Accruing loans past due 30-89 days   77
Loans and Leases Receivable, Recorded Investment   115,724
Construction Real Estate - Mortgage [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   77
Construction Real Estate - Mortgage [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   115,647
Construction Real Estate - Installment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Accruing loans past due 30-89 days   12
Loans and Leases Receivable, Recorded Investment   941
Construction Real Estate - Installment [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   12
Construction Real Estate - Installment [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   929
Residential Real Estate Commercial [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 5,808 4,304
Accruing restructured loans 265 253
Loans past due 90 days or more and accruing 0  
Total nonperforming loans 6,073 4,557
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 517,114  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 72,004  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 175,067  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 70,892  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 54,008  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 32,736  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 97,169  
Financing Receivable, Excluding Accrued Interest, Revolving 15,238  
Accruing loans past due 30-89 days   17
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 391 [1] 493 [2]
Loans and Leases Receivable, Recorded Investment   527,383
Residential Real Estate Commercial [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 391 510
Residential Real Estate Commercial [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 516,723 526,873
Loan balance 517,114  
Residential Real Estate - Mortgage [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 13,216 14,016
Accruing restructured loans 7,470 8,400
Loans past due 90 days or more and accruing 63 416
Total nonperforming loans 20,749 22,832
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,062,865  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 145,384  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 217,356  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 138,698  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 87,343  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 71,910  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 402,174  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Accruing loans past due 30-89 days 6,222 9,538
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 6,321 [1] 7,814 [2]
Loans and Leases Receivable, Recorded Investment   1,097,305
Residential Real Estate - Mortgage [Member] | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,042,116  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 145,384  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 217,356  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 137,995  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 86,362  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 70,931  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 384,088  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Residential Real Estate - Mortgage [Member] | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 20,749  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 703  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 981  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 979  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 18,086  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Residential Real Estate - Mortgage [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 12,543 17,352
Residential Real Estate - Mortgage [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,050,322 1,079,953
Loan balance 1,062,865  
Residential Real Estate - HELOC [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 1,297 1,286
Accruing restructured loans 773 909
Loans past due 90 days or more and accruing 259 77
Total nonperforming loans 2,329 2,272
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 167,522  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 86  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 23  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 122  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 4,852  
Financing Receivable, Excluding Accrued Interest, Revolving 162,439  
Accruing loans past due 30-89 days 476 805
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 979 [1] 810 [2]
Loans and Leases Receivable, Recorded Investment   182,675
Residential Real Estate - HELOC [Member] | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 165,193  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 86  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 23  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 48  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,999  
Financing Receivable, Excluding Accrued Interest, Revolving 162,037  
Residential Real Estate - HELOC [Member] | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,329  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 74  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,853  
Financing Receivable, Excluding Accrued Interest, Revolving 402  
Residential Real Estate - HELOC [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,455 1,615
Residential Real Estate - HELOC [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 166,067 181,060
Loan balance 167,522  
Residential Real Estate - Installment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 160 184
Accruing restructured loans 1,632 1,728
Loans past due 90 days or more and accruing 0  
Total nonperforming loans 1,792 1,912
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,911  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 94  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 647  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 205  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,419  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 4,546  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Accruing loans past due 30-89 days 123 67
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 54 [1] 71 [2]
Loans and Leases Receivable, Recorded Investment   8,458
Residential Real Estate - Installment [Member] | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 5,119  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 79  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 645  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 159  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,329  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,907  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Residential Real Estate - Installment [Member] | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,792  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 15  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 46  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 90  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,639  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Residential Real Estate - Installment [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 177 138
Residential Real Estate - Installment [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,734 8,320
Loan balance 6,911  
PPP loans receivable [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 0  
Accruing restructured loans 0  
Loans past due 90 days or more and accruing 18  
Total nonperforming loans 18  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 18  
PPP loans receivable [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 18  
PPP loans receivable [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 248,862  
Loan balance 248,880  
Construction Real Estate Retail    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 12  
Accruing restructured loans 27  
Loans past due 90 days or more and accruing 0  
Total nonperforming loans 39  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 118,819  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 26,301  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 74,144  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 10,309  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,450  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,976  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,561  
Financing Receivable, Excluding Accrued Interest, Revolving 78  
Accruing loans past due 30-89 days 36  
Loans and Leases Receivable, Recorded Investment   116,665
Construction Real Estate Retail | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 118,780  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 26,301  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 74,144  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 10,309  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,450  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,960  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,538  
Financing Receivable, Excluding Accrued Interest, Revolving 78  
Construction Real Estate Retail | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 39  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 16  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 23  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Construction Real Estate Retail | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 36  
Construction Real Estate Retail | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 118,783  
Loan balance 118,819  
GFSC loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 159  
Accruing restructured loans 14  
Loans past due 90 days or more and accruing 22  
Total nonperforming loans 195  
Bank Overdrafts | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,536  
Loan balance 1,536  
Commercial Financial Agricultural less PPP and Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 19,655  
Accruing restructured loans 2,509  
Loans past due 90 days or more and accruing 0  
Total nonperforming loans 22,164  
Accruing loans past due 30-89 days 3,152  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans [1] 11,688  
Commercial Financial Agricultural less PPP and Overdrafts | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 14,840  
Commercial Financial Agricultural less PPP and Overdrafts | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,196,418  
Loan balance 1,211,258  
Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 52,995 67,426
Accruing restructured loans 3,691 2,931
Loans past due 90 days or more and accruing 0 377
Total nonperforming loans 56,686 70,734
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,777,806  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 192,250  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 478,534  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 321,778  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 203,193  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 143,676  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 426,004  
Financing Receivable, Excluding Accrued Interest, Revolving 12,371  
Accruing loans past due 30-89 days 76 82
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 722 [1] 972 [2]
Loans and Leases Receivable, Recorded Investment   1,754,206
Commercial Real Estate [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 798 1,054
Commercial Real Estate [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,777,008 1,753,152
Loan balance 1,777,806  
Consumer [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans   2,172
Accruing restructured loans   1,017
Loans past due 90 days or more and accruing   724
Total nonperforming loans   3,913
Accruing loans past due 30-89 days   5,496
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans [2]   1,213
Loans and Leases Receivable, Recorded Investment   1,664,214
Consumer [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   6,709
Consumer [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss   1,657,505
Finance Leases Portfolio Segment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 1,535 1,595
Accruing restructured loans 0 0
Loans past due 90 days or more and accruing 0 0
Total nonperforming loans 1,535 1,595
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 22,673  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 3,970  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 7,825  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 4,967  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,214  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,242  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,455  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Accruing loans past due 30-89 days 15 186
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 37 984 [2]
Loans and Leases Receivable, Recorded Investment   24,452
Finance Leases Portfolio Segment [Member] | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 52 1,170
Finance Leases Portfolio Segment [Member] | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 22,621 $ 23,282
Loan balance 22,673  
Check loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,082  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 2,082  
Accruing loans past due 30-89 days 6  
Check loans | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,082  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 2,082  
Check loans | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 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  
Check loans | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6  
Check loans | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,076  
Loan balance 2,082  
Bank Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,536  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,536  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Bank Overdrafts | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,536  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 1,536  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Bank Overdrafts | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 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  
GFSC loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,750  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 457  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,306  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 740  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 203  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year (101)  
Financing Receivable, Excluding Accrued Interest, Revolving 145  
Accruing loans past due 30-89 days 324  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 130  
GFSC loans | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,555  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 438  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,210  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 687  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 181  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year (106)  
Financing Receivable, Excluding Accrued Interest, Revolving 145  
GFSC loans | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 195  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 19  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 96  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 53  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 22  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 5  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
GFSC loans | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 454  
GFSC loans | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,296  
Loan balance 3,750  
Consumer less GFSC and Check Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 1,562  
Accruing restructured loans 941  
Loans past due 90 days or more and accruing 153  
Total nonperforming loans 2,656  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,683,749  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 373,973  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 621,440  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 333,769  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 160,854  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 93,071  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 90,458  
Financing Receivable, Excluding Accrued Interest, Revolving 10,184  
Accruing loans past due 30-89 days 2,178  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 261  
Consumer less GFSC and Check Loans | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,681,093  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 373,933  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 620,977  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 333,082  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 160,404  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 92,823  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 89,690  
Financing Receivable, Excluding Accrued Interest, Revolving 10,184  
Consumer less GFSC and Check Loans | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,656  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 40  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 463  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 687  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 450  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 248  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 768  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Consumer less GFSC and Check Loans | Financial Asset, Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,439  
Consumer less GFSC and Check Loans | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,681,310  
Loan balance $ 1,683,749  
[1] 1) Includes an aggregate of $0.5 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans.(2) Includes an aggregate of $76.7 million of nonaccrual loans which were current in regards to contractual principal and interest payments
[2] 1) Includes an aggregate of $1.6 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans.    (2) Includes an aggregate of $92.6 million of nonaccrual loans which were current in regards to contractual principal and interest payments.