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Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans $ 87,791 $ 117,368
Accruing restructured loans 18,797 20,888
Loans past due 90 days or more and accruing 284 1,594
Total nonperforming loans 106,872 139,850
Accruing loans past due 30-89 days 14,376 23,652
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 20,354 [1] 26,364 [2]
Loan balance 6,908,417 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 34,730 50,016
Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,873,687 7,148,422
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 61 3,110
Accruing restructured loans 380 0
Loans past due 90 days or more and accruing 0 0
Total nonperforming loans 441 3,110
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 231,210  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 65,351  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 85,687  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 43,515  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 6,274  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,900  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 5,250  
Financing Receivable, Excluding Accrued Interest, Revolving 23,233  
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
Loan balance 231,210  
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 230,395 227,524
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 4,614 4,304
Accruing restructured loans 243 253
Loans past due 90 days or more and accruing 0  
Total nonperforming loans 4,857 4,557
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 527,151  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 107,033  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 172,204  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 66,470  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 48,315  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 30,106  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 87,905  
Financing Receivable, Excluding Accrued Interest, Revolving 15,118  
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 413 [1] 493 [2]
Loan balance 527,151  
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 413 510
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 526,738 526,873
Residential Real Estate - Mortgage [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 13,122 14,016
Accruing restructured loans 7,387 8,400
Loans past due 90 days or more and accruing 0 416
Total nonperforming loans 20,509 22,832
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,052,093  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 195,203  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 218,020  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 124,279  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 76,302  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 64,434  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 373,855  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Accruing loans past due 30-89 days 5,931 9,538
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 5,884 [1] 7,814 [2]
Loan balance 1,052,093  
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 1,031,584  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 195,203  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 217,391  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 123,465  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 75,441  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 63,593  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 356,491  
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 20,509  
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 629  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 814  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 861  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 841  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 17,364  
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 11,815 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 1,040,278 1,079,953
Residential Real Estate - HELOC [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 1,683 1,286
Accruing restructured loans 697 909
Loans past due 90 days or more and accruing 0 77
Total nonperforming loans 2,380 2,272
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 166,454  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 299  
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 158  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 61  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 113  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 4,368  
Financing Receivable, Excluding Accrued Interest, Revolving 161,455  
Accruing loans past due 30-89 days 487 805
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 997 [1] 810 [2]
Loan balance 166,454  
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 164,074  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 299  
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 158  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 22  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 43  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,490  
Financing Receivable, Excluding Accrued Interest, Revolving 161,062  
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 2,380  
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 39  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 70  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,878  
Financing Receivable, Excluding Accrued Interest, Revolving 393  
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 1,484 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 164,970 181,060
Residential Real Estate - Installment [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 113 184
Accruing restructured loans 1,661 1,728
Loans past due 90 days or more and accruing 29  
Total nonperforming loans 1,803 1,912
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,410  
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 20  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 555  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 185  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,316  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 4,334  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Accruing loans past due 30-89 days 37 67
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 93 [1] 71 [2]
Loan balance 6,410  
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 4,607  
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 7  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 553  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 142  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,231  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,674  
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 1,803  
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 13  
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 43  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 85  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,660  
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 130 138
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 6,280 8,320
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 0  
Total nonperforming loans 0  
Accruing loans past due 30-89 days 1  
Loan balance 131,483  
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 1  
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 131,482  
Construction Real Estate Retail    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 12  
Accruing restructured loans 10  
Loans past due 90 days or more and accruing 0  
Total nonperforming loans 22  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 111,677  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 47,057  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 49,942  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 7,649  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,045  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,556  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,348  
Financing Receivable, Excluding Accrued Interest, Revolving 80  
Accruing loans past due 30-89 days 1,202  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 12  
Loan balance 111,677  
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 111,655  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 47,057  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 49,942  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 7,649  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 3,045  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,556  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,326  
Financing Receivable, Excluding Accrued Interest, Revolving 80  
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 22  
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 22  
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 1,214  
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 110,463  
GFSC loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 82  
Accruing restructured loans 10  
Loans past due 90 days or more and accruing 12  
Total nonperforming loans 104  
Bank Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loan balance 4,033  
Bank Overdrafts | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,033  
Commercial Financial Agricultural less PPP and Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 18,245  
Accruing restructured loans 3,812  
Loans past due 90 days or more and accruing 0  
Total nonperforming loans 22,057  
Accruing loans past due 30-89 days 3,210  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans [1] 10,909  
Loan balance 1,179,354  
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 14,119  
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 1,165,235  
Commercial Real Estate [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 46,803 67,426
Accruing restructured loans 3,740 2,931
Loans past due 90 days or more and accruing 0 377
Total nonperforming loans 50,543 70,734
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,761,596  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 277,406  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 469,797  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 290,947  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 190,303  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 136,448  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 380,899  
Financing Receivable, Excluding Accrued Interest, Revolving 15,796  
Accruing loans past due 30-89 days   82
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 1,009 [1] 972 [2]
Loan balance 1,761,596  
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 1,009 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 1,760,587 1,753,152
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 1,406 1,595
Accruing restructured loans 0 0
Loans past due 90 days or more and accruing 0 0
Total nonperforming loans 1,406 1,595
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 21,632  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 5,179  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 7,266  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 4,371  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,714  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 954  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,148  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Accruing loans past due 30-89 days 53 186
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 576 984 [2]
Loan balance 21,632  
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 629 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 21,003 $ 23,282
Check loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,092  
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 2,092  
Accruing loans past due 30-89 days 8  
Loan balance 2,092  
Check loans | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,092  
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 2,092  
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 8  
Check loans | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,084  
Bank Overdrafts    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,033  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 4,033  
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 4,033  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 4,033  
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 2,624  
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 333  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,651  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 471  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 125  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year (81)  
Financing Receivable, Excluding Accrued Interest, Revolving 125  
Accruing loans past due 30-89 days 196  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 57  
Loan balance 2,624  
GFSC loans | Performing Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,520  
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 333  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,581  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 452  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 110  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year (81)  
Financing Receivable, Excluding Accrued Interest, Revolving 125  
GFSC loans | Nonperforming Financial Instruments [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 104  
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 70  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 19  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 15  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
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 253  
GFSC loans | Financial Asset, Not Past Due    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,371  
Consumer less GFSC and Check Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Nonaccrual loans 1,650  
Accruing restructured loans 857  
Loans past due 90 days or more and accruing 243  
Total nonperforming loans 2,750  
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,710,608  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 544,594  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 559,266  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 294,510  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 138,922  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 77,681  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 73,012  
Financing Receivable, Excluding Accrued Interest, Revolving 22,623  
Accruing loans past due 30-89 days 2,436  
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans 404  
Loan balance 1,710,608  
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 1,707,858  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 544,465  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 558,784  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 293,738  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 138,496  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 77,438  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 72,314  
Financing Receivable, Excluding Accrued Interest, Revolving 22,623  
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 2,750  
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 129  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 482  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 772  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 426  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 243  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 698  
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 2,840  
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 $ 1,707,768  
[1] 1) Includes an aggregate of $0.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans.(2) Includes an aggregate of $67.7 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.