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Loans Loans - Weighted Average Risk Grade for All Commercial Loans by Class and Year of Origination (Details) $ in Thousands | Sep. 30, 2020 USD ($) Grade | Dec. 31, 2019 USD ($) Grade
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 18,223,877 | $ 14,750,332
Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 4,820,018 | $ 5,187,466
Weighted Average Risk Grade For Loans | Grade | 6.42 | 6.44
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,189,149 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 669,507 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 399,543 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 285,092 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 133,505 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 131,886 |
Financing Receivable, Revolving | 1,946,379 |
Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 1,363,368 | $ 1,652,882
Weighted Average Risk Grade For Loans | Grade | 7.39 | 6.39
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 667,227 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 57,989 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 21,091 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 7,942 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,388 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 5,775 |
Financing Receivable, Revolving | 553,059 |
Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 5,733,138 | $ 4,883,580
Weighted Average Risk Grade For Loans | Grade | 7.34 | 7.01
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,204,132 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,142,733 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 940,137 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 810,297 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 553,477 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 950,369 |
Financing Receivable, Revolving | 74,384 |
Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 1,274,080 | $ 1,312,659
Weighted Average Risk Grade For Loans | Grade | 7.25 | 7.31
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 310,240 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 488,536 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 251,868 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 40,441 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,164 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,731 |
Financing Receivable, Revolving | 179,100 |
Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 7,007,218 | $ 6,196,239
Weighted Average Risk Grade For Loans | Grade | 7.33 | 7.07
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,514,372 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,631,269 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,192,005 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 850,738 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 554,641 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 953,100 |
Financing Receivable, Revolving | 253,484 |
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 4,402,351 | $ 4,788,857
Weighted Average Risk Grade For Loans | Grade | 6.12 | 6.17
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,101,917 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 625,692 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 340,799 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 251,180 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 120,777 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 129,757 |
Financing Receivable, Revolving | 1,788,761 |
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 936,782 | $ 1,488,301
Weighted Average Risk Grade For Loans | Grade | 6.18 | 5.90
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 454,901 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 25,589 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 10,956 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 6,732 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,481 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 4,709 |
Financing Receivable, Revolving | 407,478 |
Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 4,967,561 | $ 4,523,271
Weighted Average Risk Grade For Loans | Grade | 6.98 | 6.78
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,167,872 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,010,418 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 829,640 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 660,047 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 430,971 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 752,461 |
Financing Receivable, Revolving | 62,672 |
Risk Grade One To Eight [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 1,140,937 | $ 1,274,098
Weighted Average Risk Grade For Loans | Grade | 7.01 | 7.25
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 272,025 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 480,166 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 224,389 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 753 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,164 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,786 |
Financing Receivable, Revolving | 160,654 |
Risk Grade One To Eight [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income |  | $ 5,797,369
Weighted Average Risk Grade For Loans | Grade |  | 6.88
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 248,573 | $ 247,212
Weighted Average Risk Grade For Loans | Grade | 9.00 | 9.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 69,846 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 27,843 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 36,271 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 21,352 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 9,910 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,087 |
Financing Receivable, Revolving | 77,802 |
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 222,857 | $ 32,163
Weighted Average Risk Grade For Loans | Grade | 9.00 | 9.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 108,859 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 5,542 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,190 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 90,292 |
Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 396,072 | $ 163,714
Weighted Average Risk Grade For Loans | Grade | 9.00 | 9.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 26,056 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 93,113 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 67,546 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 66,365 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 45,477 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 92,060 |
Financing Receivable, Revolving | 4,413 |
Risk Grade Nine [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 94,068 | $ 21,509
Weighted Average Risk Grade For Loans | Grade | 9.00 | 9.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 31,402 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 8,370 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 39,688 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 14,608 |
Risk Grade Nine [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income |  | $ 185,223
Weighted Average Risk Grade For Loans | Grade |  | 9.00
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 98,869 | $ 71,472
Weighted Average Risk Grade For Loans | Grade | 10.00 | 10.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 4,394 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,722 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 13,867 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 6,875 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 812 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 824 |
Financing Receivable, Revolving | 60,028 |
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 16,909 | $ 51,898
Weighted Average Risk Grade For Loans | Grade | 10.00 | 10.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 486 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 4,113 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,461 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 907 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 7,837 |
Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 211,905 | $ 103,626
Weighted Average Risk Grade For Loans | Grade | 10.00 | 10.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,362 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 26,080 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 29,357 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 39,853 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 65,702 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 42,528 |
Financing Receivable, Revolving | 4,147 |
Risk Grade Ten [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 37,450 | $ 15,243
Weighted Average Risk Grade For Loans | Grade | 10.00 | 10.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 6,133 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 27,479 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 3,838 |
Risk Grade Ten [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income |  | $ 118,869
Weighted Average Risk Grade For Loans | Grade |  | 10.00
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 48,659 | $ 53,887
Weighted Average Risk Grade For Loans | Grade | 11.00 | 11.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 3,675 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 4,507 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 6,720 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 4,422 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,896 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 167 |
Financing Receivable, Revolving | 17,909 |
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 132,779 | $ 14,760
Weighted Average Risk Grade For Loans | Grade | 11.00 | 11.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 78,832 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 15,724 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,280 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,210 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,066 |
Financing Receivable, Revolving | 32,398 |
Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 144,075 | $ 84,057
Weighted Average Risk Grade For Loans | Grade | 11.00 | 11.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 7,416 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,108 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 13,425 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 42,660 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 10,487 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 59,730 |
Financing Receivable, Revolving | 3,038 |
Risk Grade Eleven [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 945 | $ 1,144
Weighted Average Risk Grade For Loans | Grade | 11.00 | 11.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 945 |
Financing Receivable, Revolving | 0 |
Risk Grade Eleven [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income |  | $ 85,201
Weighted Average Risk Grade For Loans | Grade |  | 11.00
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 16,493 | $ 18,189
Weighted Average Risk Grade For Loans | Grade | 12.00 | 12.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 6,917 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,791 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,544 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 708 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 110 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 51 |
Financing Receivable, Revolving | 1,350 |
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 45,934 | $ 45,514
Weighted Average Risk Grade For Loans | Grade | 12.00 | 12.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 24,149 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 4,829 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 714 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 10,629 |
Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 12,212 | $ 8,529
Weighted Average Risk Grade For Loans | Grade | 12.00 | 12.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,226 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 5,214 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 169 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,372 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 840 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 3,340 |
Financing Receivable, Revolving | 51 |
Risk Grade Twelve [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 680 | $ 665
Weighted Average Risk Grade For Loans | Grade | 12.00 | 12.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 680 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 0 |
Risk Grade Twelve [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income |  | $ 9,194
Weighted Average Risk Grade For Loans | Grade |  | 12.00
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 5,073 | $ 7,849
Weighted Average Risk Grade For Loans | Grade | 13.00 | 13.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 2,400 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 952 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 342 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 555 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 529 |
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 8,107 | $ 20,246
Weighted Average Risk Grade For Loans | Grade | 13.00 | 13.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,192 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,490 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 4,425 |
Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 1,313 | $ 383
Weighted Average Risk Grade For Loans | Grade | 13.00 | 13.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 200 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 800 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 250 |
Financing Receivable, Revolving | 63 |
Risk Grade Thirteen [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 0 | $ 0
Weighted Average Risk Grade For Loans | Grade | 13.00 | 13.00
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | $ 0 |
Risk Grade Thirteen [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income |  | $ 383
Weighted Average Risk Grade For Loans | Grade |  | 13.00
Revolving Credit Facility [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.32 |
Revolving Credit Facility [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.98 |
Revolving Credit Facility [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.41 |
Revolving Credit Facility [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.00 |
Revolving Credit Facility [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.12 |
Revolving Loans Converted to Term [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.92 |
Financing Receivable, Revolving, Converted to Term Loan | $ 64,957 |
Revolving Loans Converted to Term [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 8.76 |
Financing Receivable, Revolving, Converted to Term Loan | $ 47,897 |
Revolving Loans Converted to Term [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.84 |
Financing Receivable, Revolving, Converted to Term Loan | $ 57,609 |
Revolving Loans Converted to Term [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 0 |
Financing Receivable, Revolving, Converted to Term Loan | $ 0 |
Revolving Loans Converted to Term [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.84 |
Financing Receivable, Revolving, Converted to Term Loan | $ 57,609 |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 43,468 |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 24,936 |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 53,480 |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 4,462 |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 14,974 |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 1,042 |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 4,347 |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 2,105 |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 2,876 |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 9,363 |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 269 |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 211 |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 3,022 |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 5,613 |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 295 |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Revolving, Converted to Term Loan | $ 0 |
2020 [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.12 |
2020 [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.43 |
2020 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.09 |
2020 [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.87 |
2020 [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.04 |
2019 [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.81 |
2019 [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 9.19 |
2019 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.34 |
2019 [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.18 |
2019 [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.29 |
2018 [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.20 |
2018 [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 8.78 |
2018 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.46 |
2018 [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.74 |
2018 [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.52 |
2017 [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.32 |
2017 [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.83 |
2017 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.48 |
2017 [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 8.98 |
2017 [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.55 |
2016 [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 6.37 |
2016 [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.93 |
2016 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.73 |
2016 [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.29 |
2016 [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.73 |
Prior Years [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 5.87 |
Prior Years [Member] | Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 8.06 |
Prior Years [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.26 |
Prior Years [Member] | Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 8.02 |
Prior Years [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Weighted Average Risk Grade For Loans | Grade | 7.26 |

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