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Loans Loans - Weighted Average Risk Grade for All Commercial Loans by Class and Year of Origination (Details)
$ in Thousands
Mar. 31, 2025
USD ($)
Grade
Dec. 31, 2024
USD ($)
Grade
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned discounts $ 20,903,920 $ 20,754,813
Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 939,756  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 959,189  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 520,411  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 459,649  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 263,846  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 549,790  
Financing Receivable, Excluding Accrued Interest, Revolving 2,370,129  
Loans, net of unearned discounts $ 6,163,093 $ 6,109,532
Weighted Average Risk Grade For Loans | Grade 6.66 6.64
Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 197,909  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 197,296  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 21,530  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 37,074  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 16,382  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,877  
Financing Receivable, Excluding Accrued Interest, Revolving 673,591  
Loans, net of unearned discounts $ 1,153,137 $ 1,128,895
Weighted Average Risk Grade For Loans | Grade 5.64 5.58
Commercial Real Estate Buildings Land And Other Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 295,603  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,418,771  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,334,137  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,553,791  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,084,014  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,696,639  
Financing Receivable, Excluding Accrued Interest, Revolving 174,620  
Loans, net of unearned discounts $ 7,707,702 $ 7,704,447
Weighted Average Risk Grade For Loans | Grade 7.24 7.25
Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 171,292  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 582,526  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 579,958  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 536,692  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 180,138  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,598  
Financing Receivable, Excluding Accrued Interest, Revolving 196,906  
Loans, net of unearned discounts $ 2,251,265 $ 2,264,076
Weighted Average Risk Grade For Loans | Grade 7.72 7.71
Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 466,895  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,001,297  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,914,095  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,090,483  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,264,152  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,700,237  
Financing Receivable, Excluding Accrued Interest, Revolving 371,526  
Loans, net of unearned discounts $ 9,958,967 $ 9,968,523
Weighted Average Risk Grade For Loans | Grade 7.35 7.35
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 877,222  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 927,368  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 463,360  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 351,170  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 233,860  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 504,251  
Financing Receivable, Excluding Accrued Interest, Revolving 2,193,394  
Loans, net of unearned discounts $ 5,591,974 $ 5,553,757
Weighted Average Risk Grade For Loans | Grade 6.31 6.30
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 197,422  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 197,147  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 19,272  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 34,420  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 14,400  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,956  
Financing Receivable, Excluding Accrued Interest, Revolving 659,248  
Loans, net of unearned discounts $ 1,125,772 $ 1,111,319
Weighted Average Risk Grade For Loans | Grade 5.53 5.51
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, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 294,901  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,392,807  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,275,664  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,362,405  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 933,837  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,513,562  
Financing Receivable, Excluding Accrued Interest, Revolving 170,204  
Loans, net of unearned discounts $ 7,087,996 $ 7,103,502
Weighted Average Risk Grade For Loans | Grade 7.00 7.01
Risk Grade One To Eight [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 133,282  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 580,216  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 566,929  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 336,820  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 65,554  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 3,598  
Financing Receivable, Excluding Accrued Interest, Revolving 178,803  
Loans, net of unearned discounts $ 1,865,357 $ 1,860,004
Weighted Average Risk Grade For Loans | Grade 7.38 7.31
Risk Grade One To Eight [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned discounts   $ 8,963,506
Weighted Average Risk Grade For Loans | Grade   7.07
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 10,813  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 10,899  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 18,527  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 46,810  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 21,620  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 11,921  
Financing Receivable, Excluding Accrued Interest, Revolving 109,940  
Loans, net of unearned discounts $ 250,436 $ 262,446
Weighted Average Risk Grade For Loans | Grade 9.00 9.00
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 487  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 2,258  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 13  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 538  
Financing Receivable, Excluding Accrued Interest, Revolving 7,474  
Loans, net of unearned discounts $ 11,341 $ 11,183
Weighted Average Risk Grade For Loans | Grade 9.00 9.00
Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 699  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 10,616  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 14,815  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 75,960  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 60,126  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 64,873  
Financing Receivable, Excluding Accrued Interest, Revolving 4,170  
Loans, net of unearned discounts $ 231,692 $ 211,814
Weighted Average Risk Grade For Loans | Grade 9.00 9.00
Risk Grade Nine [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 21,955  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,310  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 13,029  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 152,784  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 35,836  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 18,103  
Loans, net of unearned discounts $ 244,017 $ 171,611
Weighted Average Risk Grade For Loans | Grade 9.00 9.00
Risk Grade Nine [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned discounts   $ 383,425
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]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 2,184  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,570  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 10,950  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 49,032  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 3,885  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 25,057  
Financing Receivable, Excluding Accrued Interest, Revolving 39,141  
Loans, net of unearned discounts $ 134,805 $ 88,935
Weighted Average Risk Grade For Loans | Grade 10.00 10.00
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 636  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,969  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 4,192  
Loans, net of unearned discounts $ 9,797 $ 52
Weighted Average Risk Grade For Loans | Grade 10.00 10.00
Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 3  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 4,309  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 31,293  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 77,174  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 62,385  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 26,619  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 201,977 $ 173,033
Weighted Average Risk Grade For Loans | Grade 10.00 10.00
Risk Grade Ten [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 16,055  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 47,088  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 78,748  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 141,891 $ 232,461
Weighted Average Risk Grade For Loans | Grade 10.00 10.00
Risk Grade Ten [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned discounts   $ 405,494
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]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 29,544  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 17,990  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 20,911  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 8,652  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 2,927  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,312  
Financing Receivable, Excluding Accrued Interest, Revolving 26,854  
Loans, net of unearned discounts $ 137,027 $ 158,390
Weighted Average Risk Grade For Loans | Grade 11.00 11.00
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 149  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,018  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 25  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 2,192 $ 2,262
Weighted Average Risk Grade For Loans | Grade 11.00 11.00
Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 8,007  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 9,258  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 36,940  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 17,053  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 87,234  
Financing Receivable, Excluding Accrued Interest, Revolving 246  
Loans, net of unearned discounts $ 162,368 $ 194,178
Weighted Average Risk Grade For Loans | Grade 11.00 11.00
Risk Grade Eleven [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 0 $ 0
Weighted Average Risk Grade For Loans | Grade 11.00 11.00
Risk Grade Eleven [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned discounts   $ 194,178
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]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 12,457  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 652  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 5,753  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,515  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,525  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,219  
Financing Receivable, Excluding Accrued Interest, Revolving 617  
Loans, net of unearned discounts $ 34,427 $ 32,739
Weighted Average Risk Grade For Loans | Grade 12.00 12.00
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,358  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 1,358 $ 1,379
Weighted Average Risk Grade For Loans | Grade 12.00 12.00
Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,032  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 3,107  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,312  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 10,391  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 4,229  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 23,044 $ 21,295
Weighted Average Risk Grade For Loans | Grade 12.00 12.00
Risk Grade Twelve [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 0 $ 0
Weighted Average Risk Grade For Loans | Grade 12.00 12.00
Risk Grade Twelve [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned discounts   $ 21,295
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]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 7,536  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 710  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 910  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,470  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 29  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 30  
Financing Receivable, Excluding Accrued Interest, Revolving 183  
Loans, net of unearned discounts $ 14,424 $ 13,265
Weighted Average Risk Grade For Loans | Grade 13.00 13.00
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 2,677  
Loans, net of unearned discounts $ 2,677 $ 2,700
Weighted Average Risk Grade For Loans | Grade 13.00 13.00
Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 222  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 122  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 625 $ 625
Weighted Average Risk Grade For Loans | Grade 13.00 13.00
Risk Grade Thirteen [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0  
Financing Receivable, Excluding Accrued Interest, Revolving 0  
Loans, net of unearned discounts $ 0 $ 0
Weighted Average Risk Grade For Loans | Grade 13.00 13.00
Risk Grade Thirteen [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned discounts   $ 625
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 6.37  
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 5.08  
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 6.79  
Revolving Credit Facility [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 6.44  
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 6.60  
Revolving Loans Converted to Term [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan $ 100,323  
Weighted Average Risk Grade For Loans | Grade 9.08  
Revolving Loans Converted to Term [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan $ 5,478  
Weighted Average Risk Grade For Loans | Grade 8.96  
Revolving Loans Converted to Term [Member] | Commercial Real Estate Buildings Land And Other Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan $ 150,127  
Weighted Average Risk Grade For Loans | Grade 5.84  
Revolving Loans Converted to Term [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan $ 155  
Weighted Average Risk Grade For Loans | Grade 7.02  
Revolving Loans Converted to Term [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan $ 150,282  
Weighted Average Risk Grade For Loans | Grade 5.84  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan $ 41,349  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 1,907  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 144,616  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 155  
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan 19,906  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 571  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 433  
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, 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, Excluding Accrued Interest, Revolving, Converted to Term Loan 2,986  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 3,000  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 194  
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, 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, Excluding Accrued Interest, Revolving, Converted to Term Loan 23,837  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 0  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 3,630  
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, 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, Excluding Accrued Interest, Revolving, Converted to Term Loan 8,689  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 0  
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, Excluding Accrued Interest, Revolving, Converted to Term Loan 973  
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, 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, Excluding Accrued Interest, Revolving, Converted to Term Loan 3,556  
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, Excluding Accrued Interest, 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, Excluding Accrued Interest, Revolving, Converted to Term Loan 281  
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan $ 0  
2025 [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 6.61  
2025 [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 6.00  
2025 [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 6.98  
2025 [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.41  
2025 [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.14  
2024 [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 6.86  
2024 [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 6.57  
2024 [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 7.20  
2024 [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.57  
2024 [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.31  
2023 [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.13  
2023 [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.22  
2023 [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 7.30  
2023 [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.56  
2023 [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.38  
2022 [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.45  
2022 [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.56  
2022 [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  
2022 [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 8.28  
2022 [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.58  
2021 [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.15  
2021 [Member] | Commercial and Industrial Total Energy Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 4.67  
2021 [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 7.54  
2021 [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 8.77  
2021 [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.72  
Prior Years [Member] | Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 5.88  
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 9.29  
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 7.14  
Prior Years [Member] | Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.28  
Prior Years [Member] | Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Risk Grade For Loans | Grade 7.14