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Loans and Allowance for Credit Losses Credit Quality Indicators (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Total          
Total $ 18,586,756   $ 18,586,756   $ 18,900,820
Current period gross charge-offs (9,522) $ (8,047) (17,724) $ (22,050)  
Current period recoveries 2,568 3,926 4,589 6,813  
Total net (charge-offs) recoveries 6,954 $ 4,121 13,135 $ 15,237  
Commercial and industrial (1)          
Total          
Total 4,985,414   4,985,414   5,670,828
Real estate - commercial mortgage          
Total          
Total 7,152,932   7,152,932   7,105,092
Real-estate - home equity          
Total          
Total 1,136,128   1,136,128   1,202,913
Real estate - residential mortgage          
Total          
Total 3,555,897   3,555,897   3,141,915
Consumer          
Total          
Total 448,433   448,433   466,772
Equipment lease financing, other and overdrafts          
Total          
Total 237,197   237,197   266,082
Portfolio Segment and Loan Class [Member]          
2021          
Total 1,593,610   1,593,610   3,467,811
2020          
Total 2,168,599   2,168,599   1,732,931
2019          
Total 1,694,790   1,694,790   1,353,012
2018          
Total 1,194,114   1,194,114   1,234,058
2017          
Total 1,119,363   1,119,363   1,171,834
Prior          
Total 3,957,589   3,957,589   3,248,551
Revolving Loans Amortized Cost Basis          
Total 1,320,439   1,320,439   1,485,249
Total          
Total 13,050,531   13,050,531   13,694,790
Portfolio Segment and Loan Class [Member] | Pass          
2021          
Total 1,583,801   1,583,801   3,443,080
2020          
Total 2,102,893   2,102,893   1,655,148
2019          
Total 1,602,757   1,602,757   1,225,117
2018          
Total 1,045,152   1,045,152   1,090,130
2017          
Total 974,618   974,618   1,029,619
Prior          
Total 3,414,862   3,414,862   2,920,459
Revolving Loans Amortized Cost Basis          
Total 1,227,972   1,227,972   1,369,756
Total          
Total 11,952,055   11,952,055   12,733,713
Portfolio Segment and Loan Class [Member] | Special Mention          
2021          
Total 4,876   4,876   20,272
2020          
Total 55,266   55,266   64,708
2019          
Total 52,145   52,145   113,214
2018          
Total 109,823   109,823   91,650
2017          
Total 89,193   89,193   107,665
Prior          
Total 347,799   347,799   199,596
Revolving Loans Amortized Cost Basis          
Total 44,856   44,856   48,358
Total          
Total 704,063   704,063   645,463
Portfolio Segment and Loan Class [Member] | Substandard or Lower          
2021          
Total 4,933   4,933   4,459
2020          
Total 10,440   10,440   13,075
2019          
Total 39,888   39,888   14,681
2018          
Total 39,139   39,139   52,278
2017          
Total 55,552   55,552   34,550
Prior          
Total 194,928   194,928   128,496
Revolving Loans Amortized Cost Basis          
Total 47,611   47,611   67,135
Total          
Total 394,413   394,413   315,614
Portfolio Segment and Loan Class [Member] | Real estate - construction(1)          
2021          
Total 60,132   60,132   185,883
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2020          
Total 259,489   259,489   229,544
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2019          
Total 204,191   204,191   217,604
Current period gross charge-offs     (39)   0
Current period recoveries     39   0
Total net (charge-offs) recoveries     0   0
2018          
Total 163,203   163,203   83,086
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2017          
Total 36,878   36,878   45,776
Current period gross charge-offs     0   0
Current period recoveries     0   68
Total net (charge-offs) recoveries     0   68
Prior          
Total 148,600   148,600   118,319
Current period gross charge-offs     0   (17)
Current period recoveries     599   5,054
Total net (charge-offs) recoveries     599   5,037
Revolving Loans Amortized Cost Basis          
Total 39,692   39,692   38,658
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Total          
Total 912,185   912,185   918,870
Current period gross charge-offs     (39)   (17)
Current period recoveries     638   5,122
Total net (charge-offs) recoveries     (599)   (5,105)
Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Pass          
2021          
Total 55,746   55,746   185,883
2020          
Total 259,489   259,489   229,097
2019          
Total 203,753   203,753   217,604
2018          
Total 163,203   163,203   81,086
2017          
Total 34,926   34,926   37,976
Prior          
Total 132,581   132,581   110,470
Revolving Loans Amortized Cost Basis          
Total 39,453   39,453   38,026
Total          
Total 889,151   889,151   900,142
Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Special Mention          
2021          
Total 4,386   4,386   0
2020          
Total 0   0   0
2019          
Total 285   285   0
2018          
Total 0   0   0
2017          
Total 0   0   7,047
Prior          
Total 14,421   14,421   6,212
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Total          
Total 19,092   19,092   13,259
Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Substandard or Lower          
2021          
Total 0   0   0
2020          
Total 0   0   447
2019          
Total 153   153   0
2018          
Total 0   0   2,000
2017          
Total 1,952   1,952   753
Prior          
Total 1,598   1,598   1,637
Revolving Loans Amortized Cost Basis          
Total 239   239   632
Total          
Total 3,942   3,942   5,469
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1)          
2021          
Total 1,099,862   1,099,862   2,293,387
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2020          
Total 909,307   909,307   538,322
Current period gross charge-offs     (50)   (114)
Current period recoveries     0   43
Total net (charge-offs) recoveries     (50)   (71)
2019          
Total 512,147   512,147   336,168
Current period gross charge-offs     (70)   (30)
Current period recoveries     22   486
Total net (charge-offs) recoveries     (48)   456
2018          
Total 292,181   292,181   236,285
Current period gross charge-offs     (91)   (488)
Current period recoveries     249   216
Total net (charge-offs) recoveries     158   (272)
2017          
Total 213,146   213,146   231,247
Current period gross charge-offs     (130)   (393)
Current period recoveries     58   162
Total net (charge-offs) recoveries     (72)   (231)
Prior          
Total 740,858   740,858   646,458
Current period gross charge-offs     (472)   (520)
Current period recoveries     640   4,531
Total net (charge-offs) recoveries     168   4,011
Revolving Loans Amortized Cost Basis          
Total 1,216,028   1,216,028   1,388,961
Current period gross charge-offs     (4,460)   (17,370)
Current period recoveries     493   5,958
Total net (charge-offs) recoveries     (3,967)   (11,412)
Total          
Total 4,985,414   4,985,414   5,670,828
Current period gross charge-offs     (5,273)   (18,915)
Current period recoveries     1,462   11,396
Total net (charge-offs) recoveries     3,811   7,519
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Pass          
2021          
Total 1,094,643   1,094,643   2,283,533
2020          
Total 890,179   890,179   508,541
2019          
Total 474,995   474,995   298,567
2018          
Total 252,445   252,445   214,089
2017          
Total 190,560   190,560   208,549
Prior          
Total 659,879   659,879   596,646
Revolving Loans Amortized Cost Basis          
Total 1,127,132   1,127,132   1,278,689
Total          
Total 4,689,833   4,689,833   5,388,614
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Special Mention          
2021          
Total 286   286   6,633
2020          
Total 12,141   12,141   23,834
2019          
Total 21,656   21,656   29,167
2018          
Total 16,478   16,478   10,945
2017          
Total 9,393   9,393   11,506
Prior          
Total 39,229   39,229   25,960
Revolving Loans Amortized Cost Basis          
Total 44,015   44,015   45,994
Total          
Total 143,198   143,198   154,039
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Substandard or Lower          
2021          
Total 4,933   4,933   3,221
2020          
Total 6,987   6,987   5,947
2019          
Total 15,496   15,496   8,434
2018          
Total 23,258   23,258   11,251
2017          
Total 13,193   13,193   11,192
Prior          
Total 41,750   41,750   23,852
Revolving Loans Amortized Cost Basis          
Total 44,881   44,881   64,278
Total          
Total 152,383   152,383   128,175
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage          
2021          
Total 433,616   433,616   988,541
Current period gross charge-offs     0   (60)
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   (60)
2020          
Total 999,803   999,803   965,065
Current period gross charge-offs     0   (21)
Current period recoveries     0   6
Total net (charge-offs) recoveries     0   (15)
2019          
Total 978,452   978,452   799,240
Current period gross charge-offs     0   (36)
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   (36)
2018          
Total 738,730   738,730   914,687
Current period gross charge-offs     (25)   (2,515)
Current period recoveries     0   0
Total net (charge-offs) recoveries     (25)   (2,515)
2017          
Total 869,339   869,339   894,811
Current period gross charge-offs     (6,603)   (29)
Current period recoveries     0   1
Total net (charge-offs) recoveries     (6,603)   (28)
Prior          
Total 3,068,131   3,068,131   2,483,774
Current period gross charge-offs     (1,517)   (1,547)
Current period recoveries     903   1,020
Total net (charge-offs) recoveries     (614)   (527)
Revolving Loans Amortized Cost Basis          
Total 64,719   64,719   57,630
Current period gross charge-offs     (198)   (17)
Current period recoveries     0   0
Total net (charge-offs) recoveries     (198)   (17)
Total          
Total 7,152,932   7,152,932   7,105,092
Current period gross charge-offs     (8,343)   (4,225)
Current period recoveries     903   1,027
Total net (charge-offs) recoveries     7,440   3,198
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Pass          
2021          
Total 433,412   433,412   973,664
2020          
Total 953,225   953,225   917,510
2019          
Total 924,009   924,009   708,946
2018          
Total 629,504   629,504   794,955
2017          
Total 749,132   749,132   783,094
Prior          
Total 2,622,402   2,622,402   2,213,343
Revolving Loans Amortized Cost Basis          
Total 61,387   61,387   53,041
Total          
Total 6,373,071   6,373,071   6,444,957
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Special Mention          
2021          
Total 204   204   13,639
2020          
Total 43,125   43,125   40,874
2019          
Total 30,204   30,204   84,047
2018          
Total 93,345   93,345   80,705
2017          
Total 79,800   79,800   89,112
Prior          
Total 294,149   294,149   167,424
Revolving Loans Amortized Cost Basis          
Total 841   841   2,364
Total          
Total 541,773   541,773   478,165
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Substandard or Lower          
2021          
Total 0   0   1,238
2020          
Total 3,453   3,453   6,681
2019          
Total 24,239   24,239   6,247
2018          
Total 15,881   15,881   39,027
2017          
Total 40,407   40,407   22,605
Prior          
Total 151,580   151,580   103,007
Revolving Loans Amortized Cost Basis          
Total 2,491   2,491   2,225
Total          
Total 238,088   238,088   181,970
Payment Activity, Aging Status [Member]          
2021          
Total 1,076,373   1,076,373   1,600,529
2020          
Total 1,497,794   1,497,794   785,422
2019          
Total 589,993   589,993   397,005
2018          
Total 284,681   284,681   449,934
2017          
Total 339,438   339,438   319,307
Prior          
Total 767,849   767,849   627,069
Revolving Loans Amortized Cost Basis          
Total 996,791   996,791   1,044,502
Total          
Total 5,555,421   5,555,421   5,229,131
Payment Activity, Aging Status [Member] | Performing          
2021          
Total 1,076,373   1,076,373   1,600,144
2020          
Total 1,491,385   1,491,385   782,832
2019          
Total 587,400   587,400   393,651
2018          
Total 281,352   281,352   430,916
2017          
Total 320,314   320,314   318,108
Prior          
Total 741,767   741,767   602,764
Revolving Loans Amortized Cost Basis          
Total 988,512   988,512   1,034,983
Total          
Total 5,489,605   5,489,605   5,168,761
Payment Activity, Aging Status [Member] | Nonperforming Financial Instruments [Member]          
2021          
Total 0   0   385
2020          
Total 6,409   6,409   2,590
2019          
Total 2,593   2,593   3,354
2018          
Total 3,329   3,329   19,018
2017          
Total 19,124   19,124   1,199
Prior          
Total 26,082   26,082   24,305
Revolving Loans Amortized Cost Basis          
Total 8,279   8,279   9,519
Total          
Total 65,816   65,816   60,370
Payment Activity, Aging Status [Member] | Real-estate - home equity          
2021          
Total 14,248   14,248   31,445
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2020          
Total 27,159   27,159   8,264
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2019          
Total 7,757   7,757   13,929
Current period gross charge-offs     (41)   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     (41)   0
2018          
Total 11,086   11,086   11,257
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2017          
Total 9,131   9,131   11,888
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Prior          
Total 115,287   115,287   129,039
Current period gross charge-offs     (171)   (34)
Current period recoveries     58   138
Total net (charge-offs) recoveries     (113)   104
Revolving Loans Amortized Cost Basis          
Total 948,958   948,958   991,770
Current period gross charge-offs     (212)   (1,159)
Current period recoveries     51   366
Total net (charge-offs) recoveries     (161)   (793)
Total          
Total 1,136,128   1,136,128   1,202,913
Current period gross charge-offs     (424)   (1,193)
Current period recoveries     109   504
Total net (charge-offs) recoveries     315   689
Payment Activity, Aging Status [Member] | Real-estate - home equity | Performing          
2021          
Total 14,248   14,248   31,445
2020          
Total 27,159   27,159   8,176
2019          
Total 7,757   7,757   13,906
2018          
Total 11,063   11,063   11,024
2017          
Total 8,898   8,898   11,667
Prior          
Total 112,798   112,798   126,749
Revolving Loans Amortized Cost Basis          
Total 940,727   940,727   982,285
Total          
Total 1,125,152   1,125,152   1,190,573
Payment Activity, Aging Status [Member] | Real-estate - home equity | Nonperforming Financial Instruments [Member]          
2021          
Total 0   0   0
2020          
Total 0   0   88
2019          
Total 0   0   23
2018          
Total 23   23   233
2017          
Total 233   233   221
Prior          
Total 2,489   2,489   2,290
Revolving Loans Amortized Cost Basis          
Total 8,231   8,231   9,485
Total          
Total 10,976   10,976   12,340
Payment Activity, Aging Status [Member] | Real estate - residential mortgage          
2021          
Total 916,128   916,128   1,255,749
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2020          
Total 1,209,284   1,209,284   588,361
Current period gross charge-offs     (49)   (68)
Current period recoveries     0   68
Total net (charge-offs) recoveries     (49)   0
2019          
Total 437,537   437,537   231,575
Current period gross charge-offs     (143)   (101)
Current period recoveries     0   16
Total net (charge-offs) recoveries     (143)   (85)
2018          
Total 151,266   151,266   344,046
Current period gross charge-offs     (125)   (190)
Current period recoveries     12   1
Total net (charge-offs) recoveries     (113)   (189)
2017          
Total 254,682   254,682   265,712
Current period gross charge-offs     (4)   (7)
Current period recoveries     0   1
Total net (charge-offs) recoveries     (4)   (6)
Prior          
Total 587,000   587,000   456,472
Current period gross charge-offs     (367)   (254)
Current period recoveries     96   405
Total net (charge-offs) recoveries     (271)   151
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Current period gross charge-offs     0   0
Current period recoveries     92   0
Total net (charge-offs) recoveries     92   0
Total          
Total 3,555,897   3,555,897   3,141,915
Current period gross charge-offs     (688)   (620)
Current period recoveries     200   491
Total net (charge-offs) recoveries     488   129
Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Performing          
2021          
Total 916,128   916,128   1,255,532
2020          
Total 1,203,025   1,203,025   585,878
2019          
Total 435,125   435,125   228,398
2018          
Total 148,034   148,034   341,563
2017          
Total 251,748   251,748   264,990
Prior          
Total 563,509   563,509   434,889
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Total          
Total 3,517,569   3,517,569   3,111,250
Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Nonperforming Financial Instruments [Member]          
2021          
Total 0   0   217
2020          
Total 6,259   6,259   2,483
2019          
Total 2,412   2,412   3,177
2018          
Total 3,232   3,232   2,483
2017          
Total 2,934   2,934   722
Prior          
Total 23,491   23,491   21,583
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Total          
Total 38,328   38,328   30,665
Payment Activity, Aging Status [Member] | Consumer          
2021          
Total 62,507   62,507   114,567
Current period gross charge-offs     (12)   (134)
Current period recoveries     0   0
Total net (charge-offs) recoveries     (12)   (134)
2020          
Total 96,059   96,059   98,606
Current period gross charge-offs     (208)   (542)
Current period recoveries     87   64
Total net (charge-offs) recoveries     (121)   (478)
2019          
Total 81,693   81,693   95,196
Current period gross charge-offs     (225)   (524)
Current period recoveries     85   165
Total net (charge-offs) recoveries     (140)   (359)
2018          
Total 75,855   75,855   43,475
Current period gross charge-offs     (154)   (444)
Current period recoveries     52   159
Total net (charge-offs) recoveries     (102)   (285)
2017          
Total 33,055   33,055   25,918
Current period gross charge-offs     (172)   (489)
Current period recoveries     43   94
Total net (charge-offs) recoveries     (129)   (395)
Prior          
Total 51,431   51,431   36,236
Current period gross charge-offs     (157)   (769)
Current period recoveries     523   101
Total net (charge-offs) recoveries     366   (668)
Revolving Loans Amortized Cost Basis          
Total 47,833   47,833   52,732
Current period gross charge-offs     (625)   (498)
Current period recoveries     175   1,292
Total net (charge-offs) recoveries     (450)   794
Total          
Total 448,433   448,433   466,772
Current period gross charge-offs     (1,553)   (3,400)
Current period recoveries     965   1,875
Total net (charge-offs) recoveries     588   1,525
Payment Activity, Aging Status [Member] | Consumer | Performing          
2021          
Total 62,507   62,507   114,399
2020          
Total 95,909   95,909   98,587
2019          
Total 81,669   81,669   95,072
2018          
Total 75,781   75,781   43,334
2017          
Total 33,021   33,021   25,804
Prior          
Total 51,329   51,329   36,086
Revolving Loans Amortized Cost Basis          
Total 47,785   47,785   52,698
Total          
Total 448,001   448,001   466,022
Payment Activity, Aging Status [Member] | Consumer | Nonperforming Financial Instruments [Member]          
2021          
Total 0   0   168
2020          
Total 150   150   19
2019          
Total 24   24   124
2018          
Total 74   74   141
2017          
Total 34   34   114
Prior          
Total 102   102   150
Revolving Loans Amortized Cost Basis          
Total 48   48   34
Total          
Total 432   432   750
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts          
2021          
Total 31,408   31,408   102,324
Current period gross charge-offs     (128)   (606)
Current period recoveries     0   185
Total net (charge-offs) recoveries     (128)   (421)
2020          
Total 70,990   70,990   65,303
Current period gross charge-offs     (1,276)   (1,581)
Current period recoveries     239   349
Total net (charge-offs) recoveries     (1,037)   (1,232)
2019          
Total 55,921   55,921   49,483
Current period gross charge-offs     0   0
Current period recoveries     58   21
Total net (charge-offs) recoveries     58   21
2018          
Total 41,562   41,562   50,978
Current period gross charge-offs     0   0
Current period recoveries     6   18
Total net (charge-offs) recoveries     6   18
2017          
Total 42,397   42,397   15,773
Current period gross charge-offs     0   0
Current period recoveries     5   11
Total net (charge-offs) recoveries     5   11
Prior          
Total 14,115   14,115   5,322
Current period gross charge-offs     0   0
Current period recoveries     4   21
Total net (charge-offs) recoveries     4   21
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Total          
Total 256,393   256,393   289,183
Current period gross charge-offs     (1,404)   (2,187)
Current period recoveries     312   605
Total net (charge-offs) recoveries     1,092   1,582
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Performing          
2021          
Total 31,408   31,408   102,324
2020          
Total 70,990   70,990   65,303
2019          
Total 55,764   55,764   49,453
2018          
Total 41,562   41,562   34,995
2017          
Total 26,647   26,647   15,631
Prior          
Total 14,115   14,115   5,040
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Total          
Total 240,486   240,486   272,746
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Nonperforming Financial Instruments [Member]          
2021          
Total 0   0   0
2020          
Total 0   0   0
2019          
Total 157   157   30
2018          
Total 0   0   15,983
2017          
Total 15,750   15,750   142
Prior          
Total 0   0   282
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Total          
Total 15,907   15,907   16,437
Payment Activity, Aging Status [Member] | Construction - other          
2021          
Total 52,082   52,082   96,444
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2020          
Total 94,302   94,302   24,888
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2019          
Total 7,085   7,085   6,822
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2018          
Total 4,912   4,912   178
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
2017          
Total 173   173   16
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Prior          
Total 16   16   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Total          
Total 158,570   158,570   128,348
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Payment Activity, Aging Status [Member] | Construction - other | Performing          
2021          
Total 52,082   52,082   96,444
2020          
Total 94,302   94,302   24,888
2019          
Total 7,085   7,085   6,822
2018          
Total 4,912   4,912   0
2017          
Total 0   0   16
Prior          
Total 16   16   0
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Total          
Total 158,397   158,397   128,170
Payment Activity, Aging Status [Member] | Construction - other | Nonperforming Financial Instruments [Member]          
2021          
Total 0   0   0
2020          
Total 0   0   0
2019          
Total 0   0   0
2018          
Total 0   0   178
2017          
Total 173   173   0
Prior          
Total 0   0   0
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Total          
Total 173   173   178
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member]          
Revolving Loans Amortized Cost Basis          
Total 2,027   2,027   1,344
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Pass          
Revolving Loans Amortized Cost Basis          
Total 0   0   404
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Special Mention          
Revolving Loans Amortized Cost Basis          
Total 105   105   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Substandard or Lower          
Revolving Loans Amortized Cost Basis          
Total 1,922   1,922   940
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1)          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Pass          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Special Mention          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Substandard or Lower          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1)          
Revolving Loans Amortized Cost Basis          
Total 1,885   1,885   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Pass          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Special Mention          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Substandard or Lower          
Revolving Loans Amortized Cost Basis          
Total 1,885   1,885   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage          
Revolving Loans Amortized Cost Basis          
Total 142   142   1,344
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Pass          
Revolving Loans Amortized Cost Basis          
Total 0   0   404
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Special Mention          
Revolving Loans Amortized Cost Basis          
Total 105   105   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 37   37   940
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member]          
Revolving Loans Amortized Cost Basis          
Total 2,502   2,502   5,363
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Performing          
Revolving Loans Amortized Cost Basis          
Total 2,502   2,502   5,363
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Nonperforming Financial Instruments [Member]          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity          
Revolving Loans Amortized Cost Basis          
Total 2,502   2,502   5,321
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity | Performing          
Revolving Loans Amortized Cost Basis          
Total 2,502   2,502   5,321
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity | Nonperforming Financial Instruments [Member]          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Performing          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Nonperforming Financial Instruments [Member]          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer          
Revolving Loans Amortized Cost Basis          
Total 0   0   42
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer | Performing          
Revolving Loans Amortized Cost Basis          
Total 0   0   42
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer | Nonperforming Financial Instruments [Member]          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   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   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Nonperforming Financial Instruments [Member]          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Current period gross charge-offs     0   0
Current period recoveries     0   0
Total net (charge-offs) recoveries     0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other | Performing          
Revolving Loans Amortized Cost Basis          
Total 0   0   0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other | Nonperforming Financial Instruments [Member]          
Revolving Loans Amortized Cost Basis          
Total $ 0   $ 0   $ 0