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Loans and Allowance for Credit Losses Credit Quality Indicators (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Total    
Current period gross charge-offs $ (14,003)  
Current period recoveries 2,887  
Current period net charge-offs (11,116)  
Gross loans 17,102,868 $ 16,864,336
Real-estate - home equity    
Total    
Gross loans 1,292,677 1,314,944
Real estate - residential mortgage    
Total    
Gross loans 2,718,290 2,641,465
Consumer    
Total    
Gross loans 468,172 463,164
Commercial and industrial    
Total    
Gross loans 4,451,239 4,446,701
Commercial and industrial | Pass    
Total    
Gross loans   4,065,834
Commercial and industrial | Special Mention    
Total    
Gross loans   181,107
Commercial and industrial | Substandard or Lower    
Total    
Gross loans   199,760
Real-estate - commercial mortgage    
Total    
Gross loans 6,895,069 6,700,776
Real-estate - commercial mortgage | Pass    
Total    
Gross loans   6,429,407
Real-estate - commercial mortgage | Special Mention    
Total    
Gross loans   137,163
Real-estate - commercial mortgage | Substandard or Lower    
Total    
Gross loans   134,206
Commercial    
Total    
Gross loans   4,198,173
Commercial | Pass    
Total    
Gross loans   3,830,847
Commercial | Special Mention    
Total    
Gross loans   171,442
Commercial | Substandard or Lower    
Total    
Gross loans   195,884
Commercial - unsecured    
Total    
Gross loans   248,528
Commercial - unsecured | Pass    
Total    
Gross loans   234,987
Commercial - unsecured | Special Mention    
Total    
Gross loans   9,665
Commercial - unsecured | Substandard or Lower    
Total    
Gross loans   3,876
Construction    
Total    
Gross loans   107,166
Construction | Pass    
Total    
Gross loans   100,808
Construction | Special Mention    
Total    
Gross loans   2,897
Construction | Substandard or Lower    
Total    
Gross loans   3,461
Construction - commercial    
Total    
Gross loans   769,560
Construction - commercial | Pass    
Total    
Gross loans   765,562
Construction - commercial | Special Mention    
Total    
Gross loans   1,322
Construction - commercial | Substandard or Lower    
Total    
Gross loans   2,676
Total construction (excluding Construction - other)    
Total    
Gross loans   876,726
Total construction (excluding Construction - other) | Pass    
Total    
Gross loans   866,370
Total construction (excluding Construction - other) | Special Mention    
Total    
Gross loans   4,219
Total construction (excluding Construction - other) | Substandard or Lower    
Total    
Gross loans   6,137
Commercial Loans, Commerical Mortgages, Constructions Loans    
Total    
Gross loans   $ 12,024,203
Percentage of total loans rated   100.00%
Commercial Loans, Commerical Mortgages, Constructions Loans | Pass    
Total    
Gross loans   $ 11,361,611
Percentage of total loans rated   94.50%
Commercial Loans, Commerical Mortgages, Constructions Loans | Special Mention    
Total    
Gross loans   $ 322,489
Percentage of total loans rated   2.70%
Commercial Loans, Commerical Mortgages, Constructions Loans | Substandard or Lower    
Total    
Gross loans   $ 340,103
Percentage of total loans rated   2.80%
Payment Activity, Aging Status [Member]    
2020    
Total 260,218  
2019    
Total 1,005,087  
2018    
Total 596,439  
2017    
Total 645,870  
2016    
Total 422,922  
Prior    
Total 831,127  
Revolving Loans Amortized Cost Basis    
Total 1,114,895  
Total    
Total 4,879,225  
Gross loans   $ 4,813,323
Percentage of total loans rated   100.00%
Payment Activity, Aging Status [Member] | Performing    
2020    
Total 259,262  
2019    
Total 1,001,181  
2018    
Total 593,849  
2017    
Total 626,330  
2016    
Total 421,916  
Prior    
Total 808,522  
Revolving Loans Amortized Cost Basis    
Total 1,107,224  
Total    
Total 4,820,951  
Gross loans   $ 4,705,746
Percentage of total loans rated   97.80%
Payment Activity, Aging Status [Member] | Delinquent    
Total    
Gross loans   $ 56,689
Percentage of total loans rated   1.20%
Payment Activity, Aging Status [Member] | Non-performing    
2020    
Total 956  
2019    
Total 3,906  
2018    
Total 2,590  
2017    
Total 19,540  
2016    
Total 1,006  
Prior    
Total 22,605  
Revolving Loans Amortized Cost Basis    
Total 7,671  
Total    
Total 58,274  
Gross loans   $ 50,888
Percentage of total loans rated   1.00%
Payment Activity, Aging Status [Member] | Real-estate - home equity    
2020    
Total 5,325  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2019    
Total 8,862  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2018    
Total 15,971  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2017    
Total 15,793  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2016    
Total 15,970  
Current period gross charge-offs (90)  
Current period recoveries 0  
Current period net charge-offs (90)  
Prior    
Total 165,678  
Current period gross charge-offs (197)  
Current period recoveries 217  
Current period net charge-offs 20  
Revolving Loans Amortized Cost Basis    
Total 1,062,411  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Total    
Total 1,292,677  
Current period gross charge-offs (287)  
Current period recoveries 217  
Current period net charge-offs (70)  
Gross loans   $ 1,314,944
Payment Activity, Aging Status [Member] | Real-estate - home equity | Performing    
2020    
Total 5,325  
2019    
Total 8,862  
2018    
Total 15,818  
2017    
Total 15,412  
2016    
Total 15,729  
Prior    
Total 163,189  
Revolving Loans Amortized Cost Basis    
Total 1,054,889  
Total    
Total 1,281,891  
Gross loans   1,292,035
Payment Activity, Aging Status [Member] | Real-estate - home equity | Delinquent    
Total    
Gross loans   12,341
Payment Activity, Aging Status [Member] | Real-estate - home equity | Non-performing    
2020    
Total 0  
2019    
Total 0  
2018    
Total 153  
2017    
Total 381  
2016    
Total 241  
Prior    
Total 2,489  
Revolving Loans Amortized Cost Basis    
Total 7,522  
Total    
Total 10,786  
Gross loans   10,568
Payment Activity, Aging Status [Member] | Real estate - residential mortgage    
2020    
Total 169,609  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2019    
Total 707,367  
Current period gross charge-offs (15)  
Current period recoveries 0  
Current period net charge-offs (15)  
2018    
Total 380,722  
Current period gross charge-offs (80)  
Current period recoveries 4  
Current period net charge-offs (76)  
2017    
Total 502,904  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2016    
Total 348,154  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Prior    
Total 609,534  
Current period gross charge-offs (92)  
Current period recoveries 81  
Current period net charge-offs (11)  
Revolving Loans Amortized Cost Basis    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Total    
Total 2,718,290  
Current period gross charge-offs (187)  
Current period recoveries 85  
Current period net charge-offs (102)  
Gross loans   2,641,465
Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Performing    
2020    
Total 169,609  
2019    
Total 706,861  
2018    
Total 378,541  
2017    
Total 499,825  
2016    
Total 347,773  
Prior    
Total 589,717  
Revolving Loans Amortized Cost Basis    
Total 0  
Total    
Total 2,692,326  
Gross loans   2,584,763
Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Delinquent    
Total    
Gross loans   34,291
Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Non-performing    
2020    
Total 0  
2019    
Total 506  
2018    
Total 2,181  
2017    
Total 3,079  
2016    
Total 381  
Prior    
Total 19,817  
Revolving Loans Amortized Cost Basis    
Total 0  
Total    
Total 25,964  
Gross loans   22,411
Payment Activity, Aging Status [Member] | Consumer    
2020    
Total 33,478  
Current period gross charge-offs 0  
Current period recoveries 83  
Current period net charge-offs 83  
2019    
Total 122,984  
Current period gross charge-offs (212)  
Current period recoveries 45  
Current period net charge-offs (167)  
2018    
Total 125,121  
Current period gross charge-offs (219)  
Current period recoveries 40  
Current period net charge-offs (179)  
2017    
Total 59,376  
Current period gross charge-offs (254)  
Current period recoveries 0  
Current period net charge-offs (254)  
2016    
Total 33,319  
Current period gross charge-offs (166)  
Current period recoveries 0  
Current period net charge-offs (166)  
Prior    
Total 47,251  
Current period gross charge-offs (391)  
Current period recoveries 261  
Current period net charge-offs (130)  
Revolving Loans Amortized Cost Basis    
Total 46,643  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Total    
Total 468,172  
Current period gross charge-offs (1,242)  
Current period recoveries 429  
Current period net charge-offs (813)  
Gross loans   463,164
Payment Activity, Aging Status [Member] | Consumer | Performing    
2020    
Total 33,478  
2019    
Total 122,882  
2018    
Total 125,090  
2017    
Total 59,335  
2016    
Total 33,219  
Prior    
Total 46,978  
Revolving Loans Amortized Cost Basis    
Total 46,494  
Total    
Total 467,476  
Gross loans   457,556
Payment Activity, Aging Status [Member] | Consumer | Delinquent    
Total    
Gross loans   5,150
Payment Activity, Aging Status [Member] | Consumer | Non-performing    
2020    
Total 0  
2019    
Total 102  
2018    
Total 31  
2017    
Total 41  
2016    
Total 100  
Prior    
Total 273  
Revolving Loans Amortized Cost Basis    
Total 149  
Total    
Total 696  
Gross loans   458
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts    
2020    
Total 44,580  
Current period gross charge-offs 0  
Current period recoveries 5  
Current period net charge-offs 5  
2019    
Total 92,041  
Current period gross charge-offs 0  
Current period recoveries 7  
Current period net charge-offs 7  
2018    
Total 66,947  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2017    
Total 66,493  
Current period gross charge-offs (95)  
Current period recoveries 64  
Current period net charge-offs (31)  
2016    
Total 25,463  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Prior    
Total 8,664  
Current period gross charge-offs (438)  
Current period recoveries 32  
Current period net charge-offs (406)  
Revolving Loans Amortized Cost Basis    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Total    
Total 304,188  
Current period gross charge-offs (533)  
Current period recoveries 108  
Current period net charge-offs (425)  
Gross loans   299,397
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Performing    
2020    
Total 43,624  
2019    
Total 88,926  
2018    
Total 66,722  
2017    
Total 50,454  
2016    
Total 25,179  
Prior    
Total 8,638  
Total    
Total 283,543  
Gross loans   278,743
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Delinquent    
Total    
Gross loans   4,012
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Non-performing    
2020    
Total 956  
2019    
Total 3,115  
2018    
Total 225  
2017    
Total 16,039  
2016    
Total 284  
Prior    
Total 26  
Total    
Total 20,645  
Gross loans   16,642
Payment Activity, Aging Status [Member] | Construction - other    
2020    
Total 7,226  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2019    
Total 73,833  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2018    
Total 7,678  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2017    
Total 1,304  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2016    
Total 16  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Prior    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Revolving Loans Amortized Cost Basis    
Total 5,841  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Total    
Total 95,898  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Gross loans   94,353
Payment Activity, Aging Status [Member] | Construction - other | Performing    
2020    
Total 7,226  
2019    
Total 73,650  
2018    
Total 7,678  
2017    
Total 1,304  
2016    
Total 16  
Prior    
Total 0  
Revolving Loans Amortized Cost Basis    
Total 5,841  
Total    
Total 95,715  
Gross loans   92,649
Payment Activity, Aging Status [Member] | Construction - other | Delinquent    
Total    
Gross loans   895
Payment Activity, Aging Status [Member] | Construction - other | Non-performing    
2020    
Total 0  
2019    
Total 183  
2018    
Total 0  
2017    
Total 0  
2016    
Total 0  
Prior    
Total 0  
Revolving Loans Amortized Cost Basis    
Total 0  
Total    
Total 183  
Gross loans   809
Payment Activity, Aging Status [Member] | Consumer    
Total    
Gross loans   64,237
Payment Activity, Aging Status [Member] | Consumer | Performing    
Total    
Gross loans   63,582
Payment Activity, Aging Status [Member] | Consumer | Delinquent    
Total    
Gross loans   465
Payment Activity, Aging Status [Member] | Consumer | Non-performing    
Total    
Gross loans   190
Payment Activity, Aging Status [Member] | Consumer - indirect    
Total    
Gross loans   398,927
Payment Activity, Aging Status [Member] | Consumer - indirect | Performing    
Total    
Gross loans   393,974
Payment Activity, Aging Status [Member] | Consumer - indirect | Delinquent    
Total    
Gross loans   4,685
Payment Activity, Aging Status [Member] | Consumer - indirect | Non-performing    
Total    
Gross loans   $ 268
Portfolio Segment and Loan Class [Member]    
2020    
Total 479,948  
2019    
Total 1,751,861  
2018    
Total 1,443,086  
2017    
Total 1,430,074  
2016    
Total 1,298,810  
Prior    
Total 3,765,399  
Revolving Loans Amortized Cost Basis    
Total 2,020,094  
Total    
Total 12,198,178  
Portfolio Segment and Loan Class [Member] | Pass    
2020    
Total 475,684  
2019    
Total 1,740,240  
2018    
Total 1,388,021  
2017    
Total 1,355,522  
2016    
Total 1,240,615  
Prior    
Total 3,530,671  
Revolving Loans Amortized Cost Basis    
Total 1,860,285  
Total    
Total 11,598,024  
Portfolio Segment and Loan Class [Member] | Special Mention    
2020    
Total 2,302  
2019    
Total 9,572  
2018    
Total 31,612  
2017    
Total 28,751  
2016    
Total 37,264  
Prior    
Total 124,353  
Revolving Loans Amortized Cost Basis    
Total 72,184  
Total    
Total 306,166  
Portfolio Segment and Loan Class [Member] | Substandard or Lower    
2020    
Total 1,962  
2019    
Total 2,049  
2018    
Total 23,453  
2017    
Total 45,801  
2016    
Total 20,931  
Prior    
Total 110,375  
Revolving Loans Amortized Cost Basis    
Total 87,625  
Total    
Total 293,988  
Portfolio Segment and Loan Class [Member] | Real estate - construction    
2020    
Total 15,264  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2019    
Total 208,017  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2018    
Total 211,208  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2017    
Total 151,785  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2016    
Total 52,349  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Prior    
Total 178,028  
Current period gross charge-offs 0  
Current period recoveries 70  
Current period net charge-offs 70  
Revolving Loans Amortized Cost Basis    
Total 35,219  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Total    
Total 851,870  
Current period gross charge-offs 0  
Current period recoveries 70  
Current period net charge-offs 70  
Portfolio Segment and Loan Class [Member] | Real estate - construction | Pass    
2020    
Total 15,264  
2019    
Total 207,620  
2018    
Total 207,198  
2017    
Total 151,785  
2016    
Total 50,763  
Prior    
Total 169,515  
Revolving Loans Amortized Cost Basis    
Total 34,143  
Total    
Total 836,288  
Portfolio Segment and Loan Class [Member] | Real estate - construction | Special Mention    
2020    
Total 0  
2019    
Total 242  
2018    
Total 4,010  
2017    
Total 0  
2016    
Total 1,177  
Prior    
Total 2,812  
Revolving Loans Amortized Cost Basis    
Total 552  
Total    
Total 8,793  
Portfolio Segment and Loan Class [Member] | Real estate - construction | Substandard or Lower    
2020    
Total 0  
2019    
Total 155  
2018    
Total 0  
2017    
Total 0  
2016    
Total 409  
Prior    
Total 5,701  
Revolving Loans Amortized Cost Basis    
Total 524  
Total    
Total 6,789  
Portfolio Segment and Loan Class [Member] | Commercial and industrial    
2020    
Total 172,179  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2019    
Total 633,236  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2018    
Total 414,633  
Current period gross charge-offs 0  
Current period recoveries 121  
Current period net charge-offs 121  
2017    
Total 295,542  
Current period gross charge-offs (48)  
Current period recoveries 59  
Current period net charge-offs 11  
2016    
Total 272,738  
Current period gross charge-offs 0  
Current period recoveries 39  
Current period net charge-offs 39  
Prior    
Total 752,141  
Current period gross charge-offs (92)  
Current period recoveries 1,410  
Current period net charge-offs 1,318  
Revolving Loans Amortized Cost Basis    
Total 1,907,381  
Current period gross charge-offs (10,759)  
Current period recoveries 105  
Current period net charge-offs (10,654)  
Total    
Total 4,451,239  
Current period gross charge-offs (10,899)  
Current period recoveries 1,734  
Current period net charge-offs (9,165)  
Portfolio Segment and Loan Class [Member] | Commercial and industrial | Pass    
2020    
Total 168,025  
2019    
Total 624,970  
2018    
Total 386,768  
2017    
Total 270,298  
2016    
Total 243,397  
Prior    
Total 684,875  
Revolving Loans Amortized Cost Basis    
Total 1,753,315  
Total    
Total 4,133,117  
Portfolio Segment and Loan Class [Member] | Commercial and industrial | Special Mention    
2020    
Total 2,192  
2019    
Total 6,618  
2018    
Total 12,636  
2017    
Total 10,854  
2016    
Total 17,833  
Prior    
Total 39,986  
Revolving Loans Amortized Cost Basis    
Total 68,501  
Total    
Total 158,748  
Portfolio Segment and Loan Class [Member] | Commercial and industrial | Substandard or Lower    
2020    
Total 1,962  
2019    
Total 1,648  
2018    
Total 15,229  
2017    
Total 14,390  
2016    
Total 11,508  
Prior    
Total 27,280  
Revolving Loans Amortized Cost Basis    
Total 85,565  
Total    
Total 159,374  
Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage    
2020    
Total 292,505  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2019    
Total 910,608  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2018    
Total 817,245  
Current period gross charge-offs (16)  
Current period recoveries 0  
Current period net charge-offs (16)  
2017    
Total 982,747  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
2016    
Total 973,723  
Current period gross charge-offs (5)  
Current period recoveries 1  
Current period net charge-offs (4)  
Prior    
Total 2,835,230  
Current period gross charge-offs (834)  
Current period recoveries 243  
Current period net charge-offs (591)  
Revolving Loans Amortized Cost Basis    
Total 77,494  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Total    
Total 6,895,069  
Current period gross charge-offs (855)  
Current period recoveries 244  
Current period net charge-offs (611)  
Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage | Pass    
2020    
Total 292,395  
2019    
Total 907,650  
2018    
Total 794,055  
2017    
Total 933,439  
2016    
Total 946,455  
Prior    
Total 2,676,281  
Revolving Loans Amortized Cost Basis    
Total 72,827  
Total    
Total 6,628,619  
Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage | Special Mention    
2020    
Total 110  
2019    
Total 2,712  
2018    
Total 14,966  
2017    
Total 17,897  
2016    
Total 18,254  
Prior    
Total 81,555  
Revolving Loans Amortized Cost Basis    
Total 3,131  
Total    
Total 138,625  
Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage | Substandard or Lower    
2020    
Total 0  
2019    
Total 246  
2018    
Total 8,224  
2017    
Total 31,411  
2016    
Total 9,014  
Prior    
Total 77,394  
Revolving Loans Amortized Cost Basis    
Total 1,536  
Total    
Total 127,825  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member]    
Revolving Loans Amortized Cost Basis    
Total 2,667  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Performing    
Revolving Loans Amortized Cost Basis    
Total 2,667  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Non-performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity    
Revolving Loans Amortized Cost Basis    
Total 2,667  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity | Performing    
Revolving Loans Amortized Cost Basis    
Total 2,667  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity | Non-performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage    
Revolving Loans Amortized Cost Basis    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Non-performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer    
Revolving Loans Amortized Cost Basis    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer | Performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer | Non-performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts    
Revolving Loans Amortized Cost Basis    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Non-performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other    
Revolving Loans Amortized Cost Basis    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other | Performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other | Non-performing    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member]    
Revolving Loans Amortized Cost Basis    
Total 8,906  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Pass    
Revolving Loans Amortized Cost Basis    
Total 6,986  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Special Mention    
Revolving Loans Amortized Cost Basis    
Total 128  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Substandard or Lower    
Revolving Loans Amortized Cost Basis    
Total 1,792  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction    
Revolving Loans Amortized Cost Basis    
Total 0  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction | Pass    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction | Special Mention    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction | Substandard or Lower    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial    
Revolving Loans Amortized Cost Basis    
Total 3,389  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial | Pass    
Revolving Loans Amortized Cost Basis    
Total 1,469  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial | Special Mention    
Revolving Loans Amortized Cost Basis    
Total 128  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial | Substandard or Lower    
Revolving Loans Amortized Cost Basis    
Total 1,792  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage    
Revolving Loans Amortized Cost Basis    
Total 5,517  
Current period gross charge-offs 0  
Current period recoveries 0  
Current period net charge-offs 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage | Pass    
Revolving Loans Amortized Cost Basis    
Total 5,517  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage | Special Mention    
Revolving Loans Amortized Cost Basis    
Total 0  
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real-estate - commercial mortgage | Substandard or Lower    
Revolving Loans Amortized Cost Basis    
Total $ 0