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Loans and Allowances for Credit Losses, Credit Quality Indicators (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One $ 2,224,066 $ 4,855,463
Financing Receivable, Originated, Year Two 3,503,942 3,161,473
Financing Receivable, Originated, Year Three 2,904,730 2,651,833
Financing Receivable, Originated, Year Four 2,016,154 1,788,880
Financing Receivable, Originated, Year Five 1,499,030 1,356,476
Financing Receivable, Originated, More Than Five Years 3,811,822 3,054,469
Financing Receivable, Revolving 5,427,353 6,108,767
Financing Receivable, Revolving, Converted to Term Loan 29,352 30,159
Total 21,416,449 23,007,520
Commercial [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 1,022,864 1,657,760
Financing Receivable, Originated, Year Two 1,516,269 1,557,142
Financing Receivable, Originated, Year Three 1,399,042 1,461,282
Financing Receivable, Originated, Year Four 1,227,183 1,013,619
Financing Receivable, Originated, Year Five 890,630 747,318
Financing Receivable, Originated, More Than Five Years 2,022,677 1,603,533
Financing Receivable, Revolving 4,391,474 5,033,683
Financing Receivable, Revolving, Converted to Term Loan 2,768 3,198
Total 12,472,907 13,077,535
Commercial [Member] | Energy [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 72,827 157,690
Financing Receivable, Originated, Year Two 102,792 55,833
Financing Receivable, Originated, Year Three 41,317 90,799
Financing Receivable, Originated, Year Four 73,992 7,178
Financing Receivable, Originated, Year Five 5,221 13,815
Financing Receivable, Originated, More Than Five Years 31,029 29,020
Financing Receivable, Revolving 2,684,153 3,114,859
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 3,011,331 3,469,194
Commercial [Member] | Healthcare [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 296,227 536,745
Financing Receivable, Originated, Year Two 569,385 642,739
Financing Receivable, Originated, Year Three 641,041 639,676
Financing Receivable, Originated, Year Four 576,635 423,763
Financing Receivable, Originated, Year Five 380,741 234,531
Financing Receivable, Originated, More Than Five Years 767,590 680,890
Financing Receivable, Revolving 149,642 147,646
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 3,381,261 3,305,990
Commercial [Member] | Services [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 334,488 540,265
Financing Receivable, Originated, Year Two 526,901 452,269
Financing Receivable, Originated, Year Three 376,483 399,264
Financing Receivable, Originated, Year Four 339,879 326,282
Financing Receivable, Originated, Year Five 293,489 381,902
Financing Receivable, Originated, More Than Five Years 947,747 700,028
Financing Receivable, Revolving 570,219 707,891
Financing Receivable, Revolving, Converted to Term Loan 550 682
Total 3,389,756 3,508,583
Commercial [Member] | General business [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 319,322 423,060
Financing Receivable, Originated, Year Two 317,191 406,301
Financing Receivable, Originated, Year Three 340,201 331,543
Financing Receivable, Originated, Year Four 236,677 256,396
Financing Receivable, Originated, Year Five 211,179 117,070
Financing Receivable, Originated, More Than Five Years 276,311 193,595
Financing Receivable, Revolving 987,460 1,063,287
Financing Receivable, Revolving, Converted to Term Loan 2,218 2,516
Total 2,690,559 2,793,768
Commercial real estate [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 193,724 725,577
Financing Receivable, Originated, Year Two 796,606 1,219,638
Financing Receivable, Originated, Year Three 1,177,933 954,485
Financing Receivable, Originated, Year Four 593,300 506,146
Financing Receivable, Originated, Year Five 381,019 325,092
Financing Receivable, Originated, More Than Five Years 952,929 744,404
Financing Receivable, Revolving 151,445 223,158
Financing Receivable, Revolving, Converted to Term Loan 36 38
Total 4,246,992 4,698,538
Paycheck Protection Program [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 660,775 1,682,310
Financing Receivable, Originated, Year Two 460,808 0
Financing Receivable, Originated, Year Three 0 0
Financing Receivable, Originated, Year Four 0 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 0 0
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 1,121,583 1,682,310
Loans to individuals [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 346,703 789,816
Financing Receivable, Originated, Year Two 730,259 384,693
Financing Receivable, Originated, Year Three 327,755 236,066
Financing Receivable, Originated, Year Four 195,671 269,115
Financing Receivable, Originated, Year Five 227,381 284,066
Financing Receivable, Originated, More Than Five Years 836,216 706,532
Financing Receivable, Revolving 884,434 851,926
Financing Receivable, Revolving, Converted to Term Loan 26,548 26,923
Total 3,574,967 3,549,137
Loans to individuals [Member] | Residential mortgage [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 232,063 565,006
Financing Receivable, Originated, Year Two 517,388 149,947
Financing Receivable, Originated, Year Three 106,856 124,678
Financing Receivable, Originated, Year Four 87,402 125,714
Financing Receivable, Originated, Year Five 85,528 160,870
Financing Receivable, Originated, More Than Five Years 396,299 371,059
Financing Receivable, Revolving 321,545 340,316
Financing Receivable, Revolving, Converted to Term Loan 25,546 25,413
Total 1,772,627 1,863,003
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 349 4,859
Financing Receivable, Originated, Year Two 9,236 33,880
Financing Receivable, Originated, Year Three 29,970 35,009
Financing Receivable, Originated, Year Four 36,336 43,099
Financing Receivable, Originated, Year Five 42,848 58,573
Financing Receivable, Originated, More Than Five Years 295,067 233,267
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 413,806 408,687
Loans to individuals [Member] | Personal [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 114,291 219,951
Financing Receivable, Originated, Year Two 203,635 200,866
Financing Receivable, Originated, Year Three 190,929 76,379
Financing Receivable, Originated, Year Four 71,933 100,302
Financing Receivable, Originated, Year Five 99,005 64,623
Financing Receivable, Originated, More Than Five Years 144,850 102,206
Financing Receivable, Revolving 562,889 511,610
Financing Receivable, Revolving, Converted to Term Loan 1,002 1,510
Total 1,388,534 1,277,447
Performing [Member] | Commercial [Member] | Energy [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 72,827 112,614
Financing Receivable, Originated, Year Two 57,881 51,863
Financing Receivable, Originated, Year Three 37,638 89,346
Financing Receivable, Originated, Year Four 72,773 7,178
Financing Receivable, Originated, Year Five 5,221 1,148
Financing Receivable, Originated, More Than Five Years 8,948 7,956
Financing Receivable, Revolving 2,431,488 2,548,663
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 2,686,776 2,818,768
Performing [Member] | Commercial [Member] | Energy [Member] | Special Mention [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 0
Financing Receivable, Originated, Year Three 0 0
Financing Receivable, Originated, Year Four 0 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 0 0
Financing Receivable, Revolving 21,947 202,590
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 21,947 202,590
Performing [Member] | Commercial [Member] | Energy [Member] | Accruing Substandard [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 24,000
Financing Receivable, Originated, Year Two 24,000 1,363
Financing Receivable, Originated, Year Three 1,275 1,453
Financing Receivable, Originated, Year Four 1,219 0
Financing Receivable, Originated, Year Five 0 12,667
Financing Receivable, Originated, More Than Five Years 10,843 0
Financing Receivable, Revolving 194,930 283,294
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 232,267 322,777
Performing [Member] | Commercial [Member] | Healthcare [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 296,227 536,745
Financing Receivable, Originated, Year Two 569,385 615,221
Financing Receivable, Originated, Year Three 613,579 638,302
Financing Receivable, Originated, Year Four 569,118 422,834
Financing Receivable, Originated, Year Five 380,741 234,399
Financing Receivable, Originated, More Than Five Years 756,261 658,286
Financing Receivable, Revolving 149,129 147,132
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 3,334,440 3,252,919
Performing [Member] | Commercial [Member] | Healthcare [Member] | Special Mention [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 27,500
Financing Receivable, Originated, Year Three 0 0
Financing Receivable, Originated, Year Four 6,646 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 346 8,282
Financing Receivable, Revolving 4 5
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 6,996 35,787
Performing [Member] | Commercial [Member] | Healthcare [Member] | Accruing Substandard [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 0
Financing Receivable, Originated, Year Three 27,444 1,191
Financing Receivable, Originated, Year Four 871 929
Financing Receivable, Originated, Year Five 0 132
Financing Receivable, Originated, More Than Five Years 10,983 11,387
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 39,298 13,639
Performing [Member] | Commercial [Member] | Services [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 334,227 534,853
Financing Receivable, Originated, Year Two 521,732 436,384
Financing Receivable, Originated, Year Three 363,415 372,867
Financing Receivable, Originated, Year Four 322,526 307,374
Financing Receivable, Originated, Year Five 271,369 373,785
Financing Receivable, Originated, More Than Five Years 921,002 683,936
Financing Receivable, Revolving 537,942 665,491
Financing Receivable, Revolving, Converted to Term Loan 550 682
Total 3,272,763 3,375,372
Performing [Member] | Commercial [Member] | Services [Member] | Special Mention [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 222 150
Financing Receivable, Originated, Year Two 126 9,057
Financing Receivable, Originated, Year Three 1,752 389
Financing Receivable, Originated, Year Four 90 291
Financing Receivable, Originated, Year Five 3,279 2,038
Financing Receivable, Originated, More Than Five Years 11,247 2,000
Financing Receivable, Revolving 1,370 3,063
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 18,086 16,988
Performing [Member] | Commercial [Member] | Services [Member] | Accruing Substandard [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 39 429
Financing Receivable, Originated, Year Two 412 6,380
Financing Receivable, Originated, Year Three 10,869 26,008
Financing Receivable, Originated, Year Four 16,505 6,027
Financing Receivable, Originated, Year Five 1,891 5,030
Financing Receivable, Originated, More Than Five Years 9,053 7,954
Financing Receivable, Revolving 30,225 38,797
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 68,994 90,625
Performing [Member] | Commercial [Member] | General business [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 318,504 419,756
Financing Receivable, Originated, Year Two 313,185 394,985
Financing Receivable, Originated, Year Three 332,890 310,273
Financing Receivable, Originated, Year Four 221,590 236,222
Financing Receivable, Originated, Year Five 197,124 103,987
Financing Receivable, Originated, More Than Five Years 267,409 186,600
Financing Receivable, Revolving 975,933 1,055,878
Financing Receivable, Revolving, Converted to Term Loan 2,081 2,316
Total 2,628,716 2,710,017
Performing [Member] | Commercial [Member] | General business [Member] | Special Mention [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 818 197
Financing Receivable, Originated, Year Two 259 4,519
Financing Receivable, Originated, Year Three 2,719 9,713
Financing Receivable, Originated, Year Four 134 7,803
Financing Receivable, Originated, Year Five 4,010 2,511
Financing Receivable, Originated, More Than Five Years 1,026 3,159
Financing Receivable, Revolving 7,275 2,483
Financing Receivable, Revolving, Converted to Term Loan 0 19
Total 16,241 30,404
Performing [Member] | Commercial [Member] | General business [Member] | Accruing Substandard [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 1,432
Financing Receivable, Originated, Year Two 2,088 3,069
Financing Receivable, Originated, Year Three 2,802 6,694
Financing Receivable, Originated, Year Four 9,119 10,935
Financing Receivable, Originated, Year Five 8,628 10,042
Financing Receivable, Originated, More Than Five Years 7,329 3,729
Financing Receivable, Revolving 3,705 4,449
Financing Receivable, Revolving, Converted to Term Loan 108 140
Total 33,779 40,490
Performing [Member] | Commercial real estate [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 193,724 725,577
Financing Receivable, Originated, Year Two 796,606 1,211,338
Financing Receivable, Originated, Year Three 1,169,633 954,226
Financing Receivable, Originated, Year Four 590,116 489,193
Financing Receivable, Originated, Year Five 362,500 314,899
Financing Receivable, Originated, More Than Five Years 923,860 722,475
Financing Receivable, Revolving 151,418 223,131
Financing Receivable, Revolving, Converted to Term Loan 36 38
Total 4,187,893 4,640,877
Performing [Member] | Commercial real estate [Member] | Special Mention [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 0
Financing Receivable, Originated, Year Three 0 259
Financing Receivable, Originated, Year Four 3,184 12,311
Financing Receivable, Originated, Year Five 14,052 2,725
Financing Receivable, Originated, More Than Five Years 6,830 5,831
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 24,066 21,126
Performing [Member] | Commercial real estate [Member] | Accruing Substandard [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 0
Financing Receivable, Originated, Year Three 0 0
Financing Receivable, Originated, Year Four 0 4,410
Financing Receivable, Originated, Year Five 4,467 0
Financing Receivable, Originated, More Than Five Years 4,416 4,852
Financing Receivable, Revolving 27 27
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 8,910 9,289
Performing [Member] | Paycheck Protection Program [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 660,775 1,682,310
Financing Receivable, Originated, Year Two 460,808 0
Financing Receivable, Originated, Year Three 0 0
Financing Receivable, Originated, Year Four 0 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 0 0
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 1,121,583 1,682,310
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 231,814 564,325
Financing Receivable, Originated, Year Two 516,761 149,832
Financing Receivable, Originated, Year Three 106,498 120,875
Financing Receivable, Originated, Year Four 86,327 124,930
Financing Receivable, Originated, Year Five 84,853 158,801
Financing Receivable, Originated, More Than Five Years 370,185 348,292
Financing Receivable, Revolving 318,569 335,259
Financing Receivable, Revolving, Converted to Term Loan 24,610 24,553
Total 1,739,617 1,826,867
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Special Mention [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 249 33
Financing Receivable, Originated, Year Two 0 11
Financing Receivable, Originated, Year Three 0 2,094
Financing Receivable, Originated, Year Four 26 0
Financing Receivable, Originated, Year Five 0 59
Financing Receivable, Originated, More Than Five Years 239 318
Financing Receivable, Revolving 218 950
Financing Receivable, Revolving, Converted to Term Loan 10 10
Total 742 3,475
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Accruing Substandard [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 0
Financing Receivable, Originated, Year Three 117 51
Financing Receivable, Originated, Year Four 0 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 121 34
Financing Receivable, Revolving 545 272
Financing Receivable, Revolving, Converted to Term Loan 12 76
Total 795 433
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 349 4,859
Financing Receivable, Originated, Year Two 9,236 33,880
Financing Receivable, Originated, Year Three 29,888 34,464
Financing Receivable, Originated, Year Four 35,932 43,099
Financing Receivable, Originated, Year Five 42,705 58,264
Financing Receivable, Originated, More Than Five Years 286,489 226,380
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 404,599 400,946
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Pass [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 114,228 219,873
Financing Receivable, Originated, Year Two 203,538 200,580
Financing Receivable, Originated, Year Three 190,723 76,246
Financing Receivable, Originated, Year Four 71,862 100,229
Financing Receivable, Originated, Year Five 98,950 64,104
Financing Receivable, Originated, More Than Five Years 144,502 102,126
Financing Receivable, Revolving 562,863 510,571
Financing Receivable, Revolving, Converted to Term Loan 1,002 1,510
Total 1,387,668 1,275,239
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Special Mention [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 63 39
Financing Receivable, Originated, Year Two 96 55
Financing Receivable, Originated, Year Three 0 66
Financing Receivable, Originated, Year Four 9 0
Financing Receivable, Originated, Year Five 2 469
Financing Receivable, Originated, More Than Five Years 45 31
Financing Receivable, Revolving 0 965
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 215 1,625
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Accruing Substandard [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 11
Financing Receivable, Originated, Year Two 0 214
Financing Receivable, Originated, Year Three 175 10
Financing Receivable, Originated, Year Four 20 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 227 0
Financing Receivable, Revolving 0 29
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 422 264
Nonperforming Financial Instruments [Member] | Commercial [Member] | Energy [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 21,076
Financing Receivable, Originated, Year Two 20,911 2,607
Financing Receivable, Originated, Year Three 2,404 0
Financing Receivable, Originated, Year Four 0 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 11,238 21,064
Financing Receivable, Revolving 35,788 80,312
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 70,341 125,059
Nonperforming Financial Instruments [Member] | Commercial [Member] | Healthcare [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 18
Financing Receivable, Originated, Year Three 18 183
Financing Receivable, Originated, Year Four 0 0
Financing Receivable, Originated, Year Five 0 0
Financing Receivable, Originated, More Than Five Years 0 2,935
Financing Receivable, Revolving 509 509
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 527 3,645
Nonperforming Financial Instruments [Member] | Commercial [Member] | Services [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 4,833
Financing Receivable, Originated, Year Two 4,631 448
Financing Receivable, Originated, Year Three 447 0
Financing Receivable, Originated, Year Four 758 12,590
Financing Receivable, Originated, Year Five 16,950 1,049
Financing Receivable, Originated, More Than Five Years 6,445 6,138
Financing Receivable, Revolving 682 540
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 29,913 25,598
Nonperforming Financial Instruments [Member] | Commercial [Member] | General business [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 1,675
Financing Receivable, Originated, Year Two 1,659 3,728
Financing Receivable, Originated, Year Three 1,790 4,863
Financing Receivable, Originated, Year Four 5,834 1,436
Financing Receivable, Originated, Year Five 1,417 530
Financing Receivable, Originated, More Than Five Years 547 107
Financing Receivable, Revolving 547 477
Financing Receivable, Revolving, Converted to Term Loan 29 41
Total 11,823 12,857
Nonperforming Financial Instruments [Member] | Commercial real estate [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 8,300
Financing Receivable, Originated, Year Three 8,300 0
Financing Receivable, Originated, Year Four 0 232
Financing Receivable, Originated, Year Five 0 7,468
Financing Receivable, Originated, More Than Five Years 17,823 11,246
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 26,123 27,246
Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 648
Financing Receivable, Originated, Year Two 627 104
Financing Receivable, Originated, Year Three 241 1,658
Financing Receivable, Originated, Year Four 1,049 784
Financing Receivable, Originated, Year Five 675 2,010
Financing Receivable, Originated, More Than Five Years 25,754 22,415
Financing Receivable, Revolving 2,213 3,835
Financing Receivable, Revolving, Converted to Term Loan 914 774
Total 31,473 32,228
Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 0
Financing Receivable, Originated, Year Two 0 0
Financing Receivable, Originated, Year Three 82 545
Financing Receivable, Originated, Year Four 404 0
Financing Receivable, Originated, Year Five 143 309
Financing Receivable, Originated, More Than Five Years 8,578 6,887
Financing Receivable, Revolving 0 0
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total 9,207 7,741
Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Personal [Member] | Nonaccrual [Member]    
Financing Receivable, Credit Quality Indicator Line Items [Abstract]    
Financing Receivable, Originated, Year One 0 28
Financing Receivable, Originated, Year Two 1 17
Financing Receivable, Originated, Year Three 31 57
Financing Receivable, Originated, Year Four 42 73
Financing Receivable, Originated, Year Five 53 50
Financing Receivable, Originated, More Than Five Years 76 49
Financing Receivable, Revolving 26 45
Financing Receivable, Revolving, Converted to Term Loan 0 0
Total $ 229 $ 319