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Loans and Allowances for Credit Losses, Credit Quality Indicators (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | $ 3,743,425 | $ 4,453,665 |
Financing Receivable, Originated, Year 2 |  | 4,522,989 | 3,294,886 |
Financing Receivable, Originated, Year 3 |  | 2,982,784 | 2,107,063 |
Financing Receivable, Originated, Year 4 |  | 1,756,064 | 1,734,561 |
Financing Receivable, Originated, Year 5 |  | 1,234,871 | 1,157,972 |
Financing Receivable, Originated, More Than Five Years |  | 3,094,093 | 2,992,242 |
Financing Receivable, Revolving |  | 6,543,149 | 6,790,248 |
Financing Receivable, Revolving, Converted to Term Loan |  | 27,593 | 26,513 |
Total |  | 23,904,968 | 22,557,150 |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 27,316 | 28,746 | $ 51,351
Commercial [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 2,698,113 | 2,655,782 |
Financing Receivable, Originated, Year 2 |  | 2,026,636 | 1,566,129 |
Financing Receivable, Originated, Year 3 |  | 1,293,089 | 994,261 |
Financing Receivable, Originated, Year 4 |  | 846,923 | 838,006 |
Financing Receivable, Originated, Year 5 |  | 576,627 | 779,311 |
Financing Receivable, Originated, More Than Five Years |  | 1,839,613 | 1,657,429 |
Financing Receivable, Revolving |  | 5,519,976 | 5,718,433 |
Financing Receivable, Revolving, Converted to Term Loan |  | 2,792 | 3,148 |
Total |  | 14,803,769 | 14,212,499 |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 12,898 | 22,382 | 43,956
Commercial [Member] | Healthcare [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 650,768 | 932,097 |
Financing Receivable, Originated, Year 2 |  | 897,730 | 604,886 |
Financing Receivable, Originated, Year 3 |  | 609,244 | 476,854 |
Financing Receivable, Originated, Year 4 |  | 467,993 | 450,755 |
Financing Receivable, Originated, Year 5 |  | 355,026 | 471,362 |
Financing Receivable, Originated, More Than Five Years |  | 880,099 | 659,507 |
Financing Receivable, Revolving |  | 282,358 | 249,536 |
Financing Receivable, Revolving, Converted to Term Loan |  | 15 | 20 |
Total |  | 4,143,233 | 3,845,017 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff |  | 2,500 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Revolving, Writeoff |  | 0 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff |  | 0 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 2,500 |  |
Commercial [Member] | Energy [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 190,122 | 157,745 |
Financing Receivable, Originated, Year 2 |  | 100,006 | 76,951 |
Financing Receivable, Originated, Year 3 |  | 43,769 | 30,284 |
Financing Receivable, Originated, Year 4 |  | 7,876 | 13,447 |
Financing Receivable, Originated, Year 5 |  | 9,562 | 6,377 |
Financing Receivable, Originated, More Than Five Years |  | 11,682 | 5,822 |
Financing Receivable, Revolving |  | 3,074,084 | 3,134,164 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 3,437,101 | 3,424,790 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Revolving, Writeoff |  | 0 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff |  | 0 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 0 |  |
Commercial [Member] | Services [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 900,090 | 822,287 |
Financing Receivable, Originated, Year 2 |  | 541,573 | 507,219 |
Financing Receivable, Originated, Year 3 |  | 405,205 | 287,523 |
Financing Receivable, Originated, Year 4 |  | 230,823 | 196,711 |
Financing Receivable, Originated, Year 5 |  | 110,618 | 157,673 |
Financing Receivable, Originated, More Than Five Years |  | 651,745 | 702,823 |
Financing Receivable, Revolving |  | 735,561 | 756,524 |
Financing Receivable, Revolving, Converted to Term Loan |  | 608 | 761 |
Total |  | 3,576,223 | 3,431,521 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff |  | 3,060 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Revolving, Writeoff |  | 2,642 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff |  | 0 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 5,702 |  |
Commercial [Member] | General business [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 957,133 | 743,653 |
Financing Receivable, Originated, Year 2 |  | 487,327 | 377,073 |
Financing Receivable, Originated, Year 3 |  | 234,871 | 199,600 |
Financing Receivable, Originated, Year 4 |  | 140,231 | 177,093 |
Financing Receivable, Originated, Year 5 |  | 101,421 | 143,899 |
Financing Receivable, Originated, More Than Five Years |  | 296,087 | 289,277 |
Financing Receivable, Revolving |  | 1,427,973 | 1,578,209 |
Financing Receivable, Revolving, Converted to Term Loan |  | 2,169 | 2,367 |
Total |  | 3,647,212 | 3,511,171 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff |  | 4,598 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff |  | 2 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff |  | 48 |  |
Financing Receivable, Revolving, Writeoff |  | 10 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff |  | 38 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 4,696 |  |
Commercial real estate [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 399,883 | 1,188,483 |
Financing Receivable, Originated, Year 2 |  | 1,942,389 | 1,158,002 |
Financing Receivable, Originated, Year 3 |  | 1,194,762 | 552,616 |
Financing Receivable, Originated, Year 4 |  | 416,647 | 648,561 |
Financing Receivable, Originated, Year 5 |  | 520,725 | 247,625 |
Financing Receivable, Originated, More Than Five Years |  | 727,146 | 649,874 |
Financing Receivable, Revolving |  | 136,095 | 161,616 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 5,337,647 | 4,606,777 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff |  | 8,446 |  |
Financing Receivable, Revolving, Writeoff |  | 0 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff |  | 0 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 8,446 | 269 | 2,485
Loans to individuals [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 645,429 | 609,400 |
Financing Receivable, Originated, Year 2 |  | 553,964 | 570,755 |
Financing Receivable, Originated, Year 3 |  | 494,933 | 560,186 |
Financing Receivable, Originated, Year 4 |  | 492,494 | 247,994 |
Financing Receivable, Originated, Year 5 |  | 137,519 | 131,036 |
Financing Receivable, Originated, More Than Five Years |  | 527,334 | 684,939 |
Financing Receivable, Revolving |  | 887,078 | 910,199 |
Financing Receivable, Revolving, Converted to Term Loan |  | 24,801 | 23,365 |
Total |  | 3,763,552 | 3,737,874 |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 5,972 | 6,095 | $ 4,910
Loans to individuals [Member] | Residential mortgage [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 426,325 | 354,529 |
Financing Receivable, Originated, Year 2 |  | 322,442 | 374,927 |
Financing Receivable, Originated, Year 3 |  | 343,295 | 395,948 |
Financing Receivable, Originated, Year 4 |  | 351,647 | 63,504 |
Financing Receivable, Originated, Year 5 |  | 55,200 | 42,571 |
Financing Receivable, Originated, More Than Five Years |  | 255,920 | 281,290 |
Financing Receivable, Revolving |  | 381,158 | 354,986 |
Financing Receivable, Revolving, Converted to Term Loan |  | 24,653 | 23,029 |
Total |  | 2,160,640 | 1,890,784 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff |  | 51 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff |  | 4 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff |  | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff |  | 17 |  |
Financing Receivable, Revolving, Writeoff |  | 0 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff |  | 1 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 73 |  |
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 633 | 289 |
Financing Receivable, Originated, Year 2 |  | 1,788 | 2,254 |
Financing Receivable, Originated, Year 3 |  | 2,220 | 9,299 |
Financing Receivable, Originated, Year 4 |  | 4,577 | 12,182 |
Financing Receivable, Originated, Year 5 |  | 6,816 | 19,563 |
Financing Receivable, Originated, More Than Five Years |  | 133,773 | 202,353 |
Financing Receivable, Revolving |  | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 149,807 | 245,940 |
Loans to individuals [Member] | Personal [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 218,471 | 254,582 |
Financing Receivable, Originated, Year 2 |  | 229,734 | 193,574 |
Financing Receivable, Originated, Year 3 |  | 149,418 | 154,939 |
Financing Receivable, Originated, Year 4 |  | 136,270 | 172,308 |
Financing Receivable, Originated, Year 5 |  | 75,503 | 68,902 |
Financing Receivable, Originated, More Than Five Years |  | 137,641 | 201,296 |
Financing Receivable, Revolving |  | 505,920 | 555,213 |
Financing Receivable, Revolving, Converted to Term Loan |  | 148 | 336 |
Total |  | 1,453,105 | 1,601,150 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | [1] | 5,636 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | [1] | 82 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | [1] | 96 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | [1] | 43 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | [1] | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | [1] | 10 |  |
Financing Receivable, Revolving, Writeoff | [1] | 6 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | [1] | 26 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | [1] | 5,899 |  |
Performing [Member] | Commercial [Member] | Healthcare [Member] | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 650,768 | 932,097 |
Financing Receivable, Originated, Year 2 |  | 895,602 | 604,886 |
Financing Receivable, Originated, Year 3 |  | 590,736 | 476,854 |
Financing Receivable, Originated, Year 4 |  | 409,001 | 404,204 |
Financing Receivable, Originated, Year 5 |  | 331,897 | 464,989 |
Financing Receivable, Originated, More Than Five Years |  | 809,858 | 618,163 |
Financing Receivable, Revolving |  | 281,378 | 245,898 |
Financing Receivable, Revolving, Converted to Term Loan |  | 15 | 20 |
Total |  | 3,969,255 | 3,747,111 |
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 2 |  | 0 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 0 |
Financing Receivable, Originated, Year 4 |  | 21,791 | 20,071 |
Financing Receivable, Originated, Year 5 |  | 0 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 31,235 | 18,859 |
Financing Receivable, Revolving |  | 5 | 4 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 53,031 | 38,934 |
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 2 |  | 2,128 | 0 |
Financing Receivable, Originated, Year 3 |  | 18,508 | 0 |
Financing Receivable, Originated, Year 4 |  | 6,911 | 0 |
Financing Receivable, Originated, Year 5 |  | 0 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 10,896 | 14,304 |
Financing Receivable, Revolving |  | 975 | 3,634 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 39,418 | 17,938 |
Performing [Member] | Commercial [Member] | Energy [Member] | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 190,122 | 157,745 |
Financing Receivable, Originated, Year 2 |  | 100,006 | 76,951 |
Financing Receivable, Originated, Year 3 |  | 43,769 | 30,284 |
Financing Receivable, Originated, Year 4 |  | 7,876 | 12,783 |
Financing Receivable, Originated, Year 5 |  | 9,562 | 5,992 |
Financing Receivable, Originated, More Than Five Years |  | 11,583 | 4,980 |
Financing Receivable, Revolving |  | 3,025,590 | 3,104,906 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 3,388,508 | 3,393,641 |
Performing [Member] | Commercial [Member] | Energy [Member] | Special Mention [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 |  |
Financing Receivable, Originated, Year 2 |  | 0 |  |
Financing Receivable, Originated, Year 3 |  | 0 |  |
Financing Receivable, Originated, Year 4 |  | 0 |  |
Financing Receivable, Originated, Year 5 |  | 0 |  |
Financing Receivable, Originated, More Than Five Years |  | 0 |  |
Financing Receivable, Revolving |  | 13,950 |  |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 |  |
Total |  | 13,950 |  |
Performing [Member] | Commercial [Member] | Energy [Member] | Accruing Substandard [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 0 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 0 |
Financing Receivable, Originated, Year 4 |  | 0 | 664 |
Financing Receivable, Originated, Year 5 |  | 0 | 385 |
Financing Receivable, Originated, More Than Five Years |  | 0 | 683 |
Financing Receivable, Revolving |  | 16,800 | 28,018 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 16,800 | 29,750 |
Performing [Member] | Commercial [Member] | Services [Member] | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 900,090 | 821,785 |
Financing Receivable, Originated, Year 2 |  | 526,776 | 496,510 |
Financing Receivable, Originated, Year 3 |  | 401,872 | 286,085 |
Financing Receivable, Originated, Year 4 |  | 228,818 | 193,481 |
Financing Receivable, Originated, Year 5 |  | 106,112 | 156,736 |
Financing Receivable, Originated, More Than Five Years |  | 643,477 | 696,300 |
Financing Receivable, Revolving |  | 730,729 | 722,371 |
Financing Receivable, Revolving, Converted to Term Loan |  | 595 | 639 |
Total |  | 3,538,469 | 3,373,907 |
Performing [Member] | Commercial [Member] | Services [Member] | Special Mention [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 502 |
Financing Receivable, Originated, Year 2 |  | 1,085 | 5,139 |
Financing Receivable, Originated, Year 3 |  | 1,520 | 989 |
Financing Receivable, Originated, Year 4 |  | 1,341 | 771 |
Financing Receivable, Originated, Year 5 |  | 534 | 894 |
Financing Receivable, Originated, More Than Five Years |  | 4,522 | 1,345 |
Financing Receivable, Revolving |  | 81 | 8,668 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 9,083 | 18,308 |
Performing [Member] | Commercial [Member] | Services [Member] | Accruing Substandard [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 13,712 | 0 |
Financing Receivable, Originated, Year 3 |  | 178 | 0 |
Financing Receivable, Originated, Year 4 |  | 326 | 2,459 |
Financing Receivable, Originated, Year 5 |  | 3,972 | 43 |
Financing Receivable, Originated, More Than Five Years |  | 3,746 | 2,789 |
Financing Receivable, Revolving |  | 3,108 | 17,665 |
Financing Receivable, Revolving, Converted to Term Loan |  | 13 | 122 |
Total |  | 25,055 | 23,078 |
Performing [Member] | Commercial [Member] | General business [Member] | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 942,468 | 725,894 |
Financing Receivable, Originated, Year 2 |  | 436,832 | 361,839 |
Financing Receivable, Originated, Year 3 |  | 224,735 | 198,274 |
Financing Receivable, Originated, Year 4 |  | 138,951 | 172,878 |
Financing Receivable, Originated, Year 5 |  | 101,100 | 139,140 |
Financing Receivable, Originated, More Than Five Years |  | 287,744 | 283,694 |
Financing Receivable, Revolving |  | 1,389,128 | 1,570,536 |
Financing Receivable, Revolving, Converted to Term Loan |  | 2,164 | 2,329 |
Total |  | 3,523,122 | 3,454,584 |
Performing [Member] | Commercial [Member] | General business [Member] | Special Mention [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 10,264 | 17,759 |
Financing Receivable, Originated, Year 2 |  | 16,167 | 13,065 |
Financing Receivable, Originated, Year 3 |  | 8,420 | 208 |
Financing Receivable, Originated, Year 4 |  | 1,253 | 71 |
Financing Receivable, Originated, Year 5 |  | 321 | 7 |
Financing Receivable, Originated, More Than Five Years |  | 8,295 | 2,291 |
Financing Receivable, Revolving |  | 897 | 7,094 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 26 |
Total |  | 45,617 | 40,521 |
Performing [Member] | Commercial [Member] | General business [Member] | Accruing Substandard [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 4,401 | 0 |
Financing Receivable, Originated, Year 2 |  | 33,194 | 2,169 |
Financing Receivable, Originated, Year 3 |  | 1,716 | 66 |
Financing Receivable, Originated, Year 4 |  | 27 | 4,130 |
Financing Receivable, Originated, Year 5 |  | 0 | 4,680 |
Financing Receivable, Originated, More Than Five Years |  | 0 | 3,287 |
Financing Receivable, Revolving |  | 31,992 | 94 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 4 |
Total |  | 71,330 | 14,430 |
Performing [Member] | Commercial real estate [Member] | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 396,891 | 1,188,483 |
Financing Receivable, Originated, Year 2 |  | 1,941,913 | 1,158,002 |
Financing Receivable, Originated, Year 3 |  | 1,194,759 | 552,616 |
Financing Receivable, Originated, Year 4 |  | 416,647 | 641,102 |
Financing Receivable, Originated, Year 5 |  | 513,555 | 247,625 |
Financing Receivable, Originated, More Than Five Years |  | 705,092 | 633,304 |
Financing Receivable, Revolving |  | 136,095 | 161,616 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 5,304,952 | 4,582,748 |
Performing [Member] | Commercial real estate [Member] | Special Mention [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 |  |
Financing Receivable, Originated, Year 2 |  | 476 |  |
Financing Receivable, Originated, Year 3 |  | 0 |  |
Financing Receivable, Originated, Year 4 |  | 0 |  |
Financing Receivable, Originated, Year 5 |  | 0 |  |
Financing Receivable, Originated, More Than Five Years |  | 19,171 |  |
Financing Receivable, Revolving |  | 0 |  |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 |  |
Total |  | 19,647 |  |
Performing [Member] | Commercial real estate [Member] | Accruing Substandard [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 2,992 | 0 |
Financing Receivable, Originated, Year 2 |  | 0 | 0 |
Financing Receivable, Originated, Year 3 |  | 3 | 0 |
Financing Receivable, Originated, Year 4 |  | 0 | 7,459 |
Financing Receivable, Originated, Year 5 |  | 0 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 2,733 | 0 |
Financing Receivable, Revolving |  | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 5,728 | 7,459 |
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 426,089 | 354,497 |
Financing Receivable, Originated, Year 2 |  | 320,733 | 373,190 |
Financing Receivable, Originated, Year 3 |  | 342,927 | 393,002 |
Financing Receivable, Originated, Year 4 |  | 349,742 | 63,142 |
Financing Receivable, Originated, Year 5 |  | 54,801 | 40,525 |
Financing Receivable, Originated, More Than Five Years |  | 243,356 | 260,625 |
Financing Receivable, Revolving |  | 375,739 | 352,126 |
Financing Receivable, Revolving, Converted to Term Loan |  | 23,895 | 22,176 |
Total |  | 2,137,282 | 1,859,283 |
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 |  | 157 | 0 |
Financing Receivable, Originated, Year 2 |  | 140 | 81 |
Financing Receivable, Originated, Year 3 |  | 131 | 42 |
Financing Receivable, Originated, Year 4 |  | 1,361 | 0 |
Financing Receivable, Originated, Year 5 |  | 18 | 142 |
Financing Receivable, Originated, More Than Five Years |  | 134 | 388 |
Financing Receivable, Revolving |  | 2,982 | 527 |
Financing Receivable, Revolving, Converted to Term Loan |  | 93 | 87 |
Total |  | 5,016 | 1,267 |
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 2 |  | 150 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 187 |
Financing Receivable, Originated, Year 4 |  | 0 | 0 |
Financing Receivable, Originated, Year 5 |  | 37 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 49 | 138 |
Financing Receivable, Revolving |  | 50 | 117 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 1 |
Total |  | 286 | 443 |
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 633 | 289 |
Financing Receivable, Originated, Year 2 |  | 1,788 | 2,254 |
Financing Receivable, Originated, Year 3 |  | 2,220 | 9,000 |
Financing Receivable, Originated, Year 4 |  | 4,297 | 10,722 |
Financing Receivable, Originated, Year 5 |  | 6,441 | 17,244 |
Financing Receivable, Originated, More Than Five Years |  | 124,719 | 191,426 |
Financing Receivable, Revolving |  | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 140,098 | 230,935 |
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Pass [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 218,401 | 254,497 |
Financing Receivable, Originated, Year 2 |  | 229,580 | 193,095 |
Financing Receivable, Originated, Year 3 |  | 149,291 | 154,887 |
Financing Receivable, Originated, Year 4 |  | 136,215 | 172,114 |
Financing Receivable, Originated, Year 5 |  | 75,348 | 68,871 |
Financing Receivable, Originated, More Than Five Years |  | 137,629 | 201,278 |
Financing Receivable, Revolving |  | 503,841 | 549,187 |
Financing Receivable, Revolving, Converted to Term Loan |  | 145 | 332 |
Total |  | 1,450,450 | 1,594,261 |
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Special Mention [Member] |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 66 | 47 |
Financing Receivable, Originated, Year 2 |  | 39 | 28 |
Financing Receivable, Originated, Year 3 |  | 106 | 40 |
Financing Receivable, Originated, Year 4 |  | 30 | 12 |
Financing Receivable, Originated, Year 5 |  | 8 | 17 |
Financing Receivable, Originated, More Than Five Years |  | 0 | 0 |
Financing Receivable, Revolving |  | 1,918 | 6,003 |
Financing Receivable, Revolving, Converted to Term Loan |  | 3 | 4 |
Total |  | 2,170 | 6,151 |
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 | 0 |
Financing Receivable, Originated, Year 2 |  | 64 | 444 |
Financing Receivable, Originated, Year 3 |  | 12 | 0 |
Financing Receivable, Originated, Year 4 |  | 9 | 160 |
Financing Receivable, Originated, Year 5 |  | 144 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 0 | 0 |
Financing Receivable, Revolving |  | 3 | 0 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 232 | 604 |
Nonaccrual [Member] | Commercial [Member] | Healthcare [Member] | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 0 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 0 |
Financing Receivable, Originated, Year 4 |  | 30,290 | 26,480 |
Financing Receivable, Originated, Year 5 |  | 23,129 | 6,373 |
Financing Receivable, Originated, More Than Five Years |  | 28,110 | 8,181 |
Financing Receivable, Revolving |  | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 81,529 | 41,034 |
Nonaccrual [Member] | Commercial [Member] | Energy [Member] | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 0 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 0 |
Financing Receivable, Originated, Year 4 |  | 0 | 0 |
Financing Receivable, Originated, Year 5 |  | 0 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 99 | 159 |
Financing Receivable, Revolving |  | 17,744 | 1,240 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 17,843 | 1,399 |
Nonaccrual [Member] | Commercial [Member] | Services [Member] | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 0 | 5,570 |
Financing Receivable, Originated, Year 3 |  | 1,635 | 449 |
Financing Receivable, Originated, Year 4 |  | 338 | 0 |
Financing Receivable, Originated, Year 5 |  | 0 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 0 | 2,389 |
Financing Receivable, Revolving |  | 1,643 | 7,820 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 3,616 | 16,228 |
Nonaccrual [Member] | Commercial [Member] | General business [Member] | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 1,134 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 1,052 |
Financing Receivable, Originated, Year 4 |  | 0 | 14 |
Financing Receivable, Originated, Year 5 |  | 0 | 72 |
Financing Receivable, Originated, More Than Five Years |  | 48 | 5 |
Financing Receivable, Revolving |  | 5,956 | 485 |
Financing Receivable, Revolving, Converted to Term Loan |  | 5 | 8 |
Total |  | 7,143 | 1,636 |
Nonaccrual [Member] | Commercial real estate [Member] | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 0 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 0 |
Financing Receivable, Originated, Year 4 |  | 0 | 0 |
Financing Receivable, Originated, Year 5 |  | 7,170 | 0 |
Financing Receivable, Originated, More Than Five Years |  | 150 | 16,570 |
Financing Receivable, Revolving |  | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 7,320 | 16,570 |
Nonaccrual [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 79 | 32 |
Financing Receivable, Originated, Year 2 |  | 1,419 | 1,656 |
Financing Receivable, Originated, Year 3 |  | 237 | 2,717 |
Financing Receivable, Originated, Year 4 |  | 544 | 362 |
Financing Receivable, Originated, Year 5 |  | 344 | 1,904 |
Financing Receivable, Originated, More Than Five Years |  | 12,381 | 20,139 |
Financing Receivable, Revolving |  | 2,387 | 2,216 |
Financing Receivable, Revolving, Converted to Term Loan |  | 665 | 765 |
Total |  | 18,056 | 29,791 |
Nonaccrual [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 0 | 0 |
Financing Receivable, Originated, Year 2 |  | 0 | 0 |
Financing Receivable, Originated, Year 3 |  | 0 | 299 |
Financing Receivable, Originated, Year 4 |  | 280 | 1,460 |
Financing Receivable, Originated, Year 5 |  | 375 | 2,319 |
Financing Receivable, Originated, More Than Five Years |  | 9,054 | 10,927 |
Financing Receivable, Revolving |  | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | 9,709 | 15,005 |
Nonaccrual [Member] | Loans to individuals [Member] | Personal [Member] | Nonaccrual |  |  |  |
Financing Receivable, Credit Quality Indicator Line Items [Abstract] |  |  |  |
Financing Receivable, Originated, Year One |  | 4 | 38 |
Financing Receivable, Originated, Year 2 |  | 51 | 7 |
Financing Receivable, Originated, Year 3 |  | 9 | 12 |
Financing Receivable, Originated, Year 4 |  | 16 | 22 |
Financing Receivable, Originated, Year 5 |  | 3 | 14 |
Financing Receivable, Originated, More Than Five Years |  | 12 | 18 |
Financing Receivable, Revolving |  | 158 | 23 |
Financing Receivable, Revolving, Converted to Term Loan |  | 0 | 0 |
Total |  | $ 253 | $ 134 |
[1] | Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

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