XML 36 R26.htm IDEA: XBRL DOCUMENT v3.24.3
Loans and Allowances for Credit Losses (Tables)
9 Months Ended
Sep. 30, 2024
Loans and Leases Receivable, Net Amount [Abstract]  
Schedule of Loans by Portfolio Segment [Table Text Block]
Portfolio segments of the loan portfolio are as follows (in thousands):
 September 30, 2024December 31, 2023
Fixed
Rate
Variable
Rate
Non-accrualTotalFixed
Rate
Variable
Rate
Non-accrualTotal
Commercial$3,527,823 $11,298,427 $51,672 $14,877,922 $3,558,563 $11,135,075 $110,131 $14,803,769 
Commercial real estate
652,104 4,524,187 12,364 5,188,655 791,757 4,538,570 7,320 5,337,647 
Loans to individuals2,536,744 1,361,461 20,279 3,918,484 2,282,914 1,452,620 28,018 3,763,552 
Total$6,716,671 $17,184,075 $84,315 $23,985,061 $6,633,234 $17,126,265 $145,469 $23,904,968 
Rollforward of Allowance For Loan Losses And Accrual for Off-Balance Sheet Credit Losses [Table Text Block]
The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit is summarized as follows (in thousands):
Three Months Ended
September 30, 2024
 CommercialCommercial Real EstateLoans to IndividualsTotal
Allowance for loan losses:    
Beginning balance$150,737 $96,256 $40,833 $287,826 
Provision for loan losses918 (4,944)602 (3,424)
Loans charged off(856) (1,640)(2,496)
Recoveries of loans previously charged off
1,562 226 762 2,550 
Ending balance$152,361 $91,538 $40,557 $284,456 
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance$17,316 $23,314 $1,706 $42,336 
Provision for off-balance sheet credit risk
357 5,058 15 5,430 
Ending balance$17,673 $28,372 $1,721 $47,766 
Nine Months Ended
September 30, 2024
 CommercialCommercial Real EstateLoans to IndividualsTotal
Allowance for loan losses:    
Beginning balance$141,232 $94,718 $41,173 $277,123 
Provision for loan losses19,670 (1,991)2,005 19,684 
Loans charged off(11,487)(1,455)(4,554)(17,496)
Recoveries of loans previously charged off
2,946 266 1,933 5,145 
Ending balance$152,361 $91,538 $40,557 $284,456 
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance$19,762 $27,439 $1,776 $48,977 
Provision for off-balance sheet credit risk
(2,089)933 (55)(1,211)
Ending balance$17,673 $28,372 $1,721 $47,766 
Three Months Ended
September 30, 2023
 CommercialCommercial Real EstateLoans to IndividualsTotal
Allowance for loan losses:    
Beginning balance$143,269 $76,347 $43,098 $262,714 
Provision for loan losses1,158 11,152 3,621 15,931 
Loans charged off(6,769)(2,238)(1,586)(10,593)
Recoveries of loans previously charged off
273 3,167 622 4,062 
Ending balance$137,931 $88,428 $45,755 $272,114 
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance$20,294 $37,681 $1,965 $59,940 
Provision for off-balance sheet credit risk
(2,179)(5,076)(81)(7,336)
Ending balance$18,115 $32,605 $1,884 $52,604 
Nine Months Ended
September 30, 2023
CommercialCommercial Real EstateLoans to IndividualsTotal
Allowance for loan losses:
Beginning balance$131,586 $57,648 $46,470 $235,704 
Provision for loan losses12,908 35,878 1,627 50,413 
Loans charged off(9,578)(8,446)(4,285)(22,309)
Recoveries of loans previously charged off3,015 3,348 1,943 8,306 
Ending balance$137,931 $88,428 $45,755 $272,114 
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance$18,246 $40,490 $2,183 $60,919 
Provision for off-balance sheet credit risk(131)(7,885)(299)(8,315)
Ending balance$18,115 $32,605 $1,884 $52,604 
A $2.0 million provision for credit losses was necessary for the third quarter of 2024, reflecting continued strong credit quality, net loan paydowns, and relatively minor changes in economic forecast scenario assumptions.

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at September 30, 2024, is as follows (in thousands):
 Collectively Measured
for General Allowances
Individually Measured
for Specific Allowances
Total
 Recorded InvestmentRelated AllowanceRecorded InvestmentRelated AllowanceRecorded InvestmentRelated
Allowance
Commercial$14,826,250 $149,428 $51,672 $2,933 $14,877,922 $152,361 
Commercial real estate5,176,291 91,538 12,364  5,188,655 91,538 
Loans to individuals3,898,205 40,557 20,279  3,918,484 40,557 
Total$23,900,746 $281,523 $84,315 $2,933 $23,985,061 $284,456 
The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2023, is as follows (in thousands):

 Collectively Measured
for General Allowances
Individually Measured
for Specific Allowances
Total
 Recorded InvestmentRelated AllowanceRecorded InvestmentRelated AllowanceRecorded InvestmentRelated
Allowance
Commercial$14,693,638 $138,540 $110,131 $2,692 $14,803,769 $141,232 
Commercial real estate5,330,327 94,718 7,320 — 5,337,647 94,718 
Loans to individuals3,735,534 41,173 28,018 — 3,763,552 41,173 
Total$23,759,499 $274,431 $145,469 $2,692 $23,904,968 $277,123 
Schedule of Credit Quality Indicators [Table Text Block]
The following table summarizes the Company’s loan portfolio at September 30, 2024, by the risk grade categories and vintage (in thousands): 
Origination Year
20242023202220212020PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
Commercial:
Healthcare
Pass$442,818 $595,301 $951,875 $502,829 $355,731 $835,842 $259,118 $11 $3,943,525 
Special Mention— 15,000 27,223 1,361  46,499 505 — 90,588 
Accruing Substandard  5,249 17,932 57,966 16,728 1,154  99,029 
Nonaccrual  104 2,094  13,729   15,927 
Total healthcare442,818 610,301 984,451 524,216 413,697 912,798 260,777 11 4,149,069 
Loans charged off, year-to-date     7,240   7,240 
Services
Pass480,824 670,546 453,306 427,841 200,459 642,779 653,202 418 3,529,375 
Special Mention 1,729 135 739 447 9,186 15,150  27,386 
Accruing Substandard 768 6,623 21 1,485 5,435 1,152  15,484 
Nonaccrual      1,425  1,425 
Total services480,824 673,043 460,064 428,601 202,391 657,400 670,929 418 3,573,670 
Loans charged off, year-to-date—    22 80 9  111 
Energy
Pass145,706 86,682 40,426 2,618 7,199 19,736 2,782,432  3,084,799 
Special Mention         
Accruing Substandard      12,850  12,850 
Nonaccrual     70 28,916  28,986 
Total energy145,706 86,682 40,426 2,618 7,199 19,806 2,824,198  3,126,635 
General business
Pass585,622 655,994 320,646 184,779 121,167 347,249 1,699,086 1,692 3,916,235 
Special Mention 5,276 4,629 7,227 279 1,750 2,000 89 21,250 
Accruing Substandard1,063 15,527 46,749 5,200 1,193 6,523 9,474  85,729 
Nonaccrual168  994   30 4,084 58 5,334 
Total general business586,853 676,797 373,018 197,206 122,639 355,552 1,714,644 1,839 4,028,548 
Loans charged off, year-to-date 27 1,465   164 2,390 90 4,136 
Total commercial1,656,201 2,046,823 1,857,959 1,152,641 745,926 1,945,556 5,470,548 2,268 14,877,922 
Commercial real estate:
Pass207,236 483,818 2,124,731 877,950 305,372 922,524 138,517  5,060,148 
Special Mention 352 14,907 32,131     47,390 
Accruing Substandard  37,158   31,595   68,753 
Nonaccrual 2,416    9,948   12,364 
Total commercial real estate207,236 486,586 2,176,796 910,081 305,372 964,067 138,517  5,188,655 
Loans charged off, year-to-date     1,455   1,455 
Origination Year
20242023202220212020PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
Loans to individuals:
Residential mortgage
Pass384,583 365,415 298,108 326,216 321,928 251,578 383,530 22,040 2,353,398 
Special Mention54 246 69 158  85 1,424  2,036 
Accruing Substandard91     31 1,049  1,171 
Nonaccrual 464 490 432 531 8,435 2,776 560 13,688 
Total residential mortgage384,728 366,125 298,667 326,806 322,459 260,129 388,779 22,600 2,370,293 
Loans charged off, year-to-date 43    11 9  63 
Residential mortgage guaranteed by U.S. government agencies
Pass 1,997 2,925 2,456 3,486 110,363   121,227 
Nonaccrual    280 6,240   6,520 
Total residential mortgage guaranteed by U.S. government agencies 1,997 2,925 2,456 3,766 116,603   127,747 
Personal
Pass195,101 168,303 161,189 123,890 108,652 163,097 497,801 86 1,418,119 
Special Mention13  54 24 1 8   100 
Accruing Substandard   25 2 137 1,990  2,154 
Nonaccrual 6 21 7 5 8 24  71 
Total personal195,114 168,309 161,264 123,946 108,660 163,250 499,815 86 1,420,444 
Loans charged off, year-to-date1
4,280 69 47 42 7  26 20 4,491 
Total loans to individuals579,842 536,431 462,856 453,208 434,885 539,982 888,594 22,686 3,918,484 
Total loans$2,443,279 $3,069,840 $4,497,611 $2,515,930 $1,486,183 $3,449,605 $6,497,659 $24,954 $23,985,061 
1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.
The following table summarizes the Company's loan portfolio at December 31, 2023, by the risk grade categories and vintage (in thousands): 
Origination Year
20232022202120202019PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
Commercial:
Healthcare
Pass$650,768 $895,602 $590,736 $409,001 $331,897 $809,858 $281,378 $15 $3,969,255 
Special Mention— — — 21,791 — 31,235 — 53,031 
Accruing Substandard— 2,128 18,508 6,911 — 10,896 975 — 39,418 
Nonaccrual— — — 30,290 23,129 28,110 — — 81,529 
Total healthcare650,768 897,730 609,244 467,993 355,026 880,099 282,358 15 4,143,233 
Loans charged off, year-to-date— — — — 2,500 — — — 2,500 
Services
Pass900,090 526,776 401,872 228,818 106,112 643,477 730,729 595 3,538,469 
Special Mention— 1,085 1,520 1,341 534 4,522 81 — 9,083 
Accruing Substandard— 13,712 178 326 3,972 3,746 3,108 13 25,055 
Nonaccrual— — 1,635 338 — — 1,643 — 3,616 
Total services900,090 541,573 405,205 230,823 110,618 651,745 735,561 608 3,576,223 
Loans charged off, year-to-date— — 3,060 — — — 2,642 — 5,702 
Energy
Pass$190,122 $100,006 $43,769 $7,876 $9,562 $11,583 $3,025,590 $— $3,388,508 
Special Mention— — — — — — 13,950 — 13,950 
Accruing Substandard— — — — — — 16,800 — 16,800 
Nonaccrual— — — — — 99 17,744 — 17,843 
Total energy190,122 100,006 43,769 7,876 9,562 11,682 3,074,084 — 3,437,101 
General business
Pass942,468 436,832 224,735 138,951 101,100 287,744 1,389,128 2,164 3,523,122 
Special Mention10,264 16,167 8,420 1,253 321 8,295 897 — 45,617 
Accruing Substandard4,401 33,194 1,716 27 — — 31,992 — 71,330 
Nonaccrual— 1,134 — — — 48 5,956 7,143 
Total general business957,133 487,327 234,871 140,231 101,421 296,087 1,427,973 2,169 3,647,212 
Loans charged off, year-to-date— — 4,598 — 48 10 38 4,696 
Total commercial2,698,113 2,026,636 1,293,089 846,923 576,627 1,839,613 5,519,976 2,792 14,803,769 
Commercial real estate:
Pass396,891 1,941,913 1,194,759 416,647 513,555 705,092 136,095 — 5,304,952 
Special Mention— 476 — — — 19,171 — — 19,647 
Accruing Substandard2,992 — — — 2,733 — — 5,728 
Nonaccrual— — — — 7,170 150 — — 7,320 
Total commercial real estate399,883 1,942,389 1,194,762 416,647 520,725 727,146 136,095 — 5,337,647 
Loans charged off, year-to-date — — — — 8,446 — — 8,446 
Origination Year
20232022202120202019PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
Loans to individuals:
Residential mortgage
Pass426,089 320,733 342,927 349,742 54,801 243,356 375,739 23,895 2,137,282 
Special Mention157 140 131 1,361 18 134 2,982 93 5,016 
Accruing Substandard— 150 — — 37 49 50 — 286 
Nonaccrual79 1,419 237 544 344 12,381 2,387 665 18,056 
Total residential mortgage426,325 322,442 343,295 351,647 55,200 255,920 381,158 24,653 2,160,640 
Loans charged off, year-to-date— — 51 — 17 — 73 
Residential mortgage guaranteed by U.S. government agencies
Pass633 1,788 2,220 4,297 6,441 124,719 — — 140,098 
Nonaccrual— — — 280 375 9,054 — — 9,709 
Total residential mortgage guaranteed by U.S. government agencies633 1,788 2,220 4,577 6,816 133,773 — — 149,807 
Personal
Pass218,401 229,580 149,291 136,215 75,348 137,629 503,841 145 1,450,450 
Special Mention66 39 106 30 — 1,918 2,170 
Accruing Substandard— 64 12 144 — — 232 
Nonaccrual51 16 12 158 — 253 
Total personal218,471 229,734 149,418 136,270 75,503 137,641 505,920 148 1,453,105 
Loans charged off, year-to-date1
5,636 82 96 43 — 10 26 5,899 
Total loans to individuals645,429 553,964 494,933 492,494 137,519 527,334 887,078 24,801 3,763,552 
Total loans$3,743,425 $4,522,989 $2,982,784 $1,756,064 $1,234,871 $3,094,093 $6,543,149 $27,593 $23,904,968 
1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.
Financing Receivable, Nonaccrual [Table Text Block]
A summary of nonaccruing loans at September 30, 2024, follows (in thousands): 
As of September 30, 2024
 TotalWith No
Allowance
With AllowanceRelated Allowance
Commercial:    
Healthcare$15,927 $15,927 $ $ 
Services1,425 1,149 276 276 
Energy28,986 11,596 17,390 2,657 
General business5,334 5,334   
Total commercial51,672 34,006 17,666 2,933 
Commercial real estate12,364 12,364   
Loans to individuals:    
Residential mortgage13,688 13,688   
Residential mortgage guaranteed by U.S. government agencies6,520 6,520   
Personal71 71   
Total loans to individuals20,279 20,279   
Total$84,315 $66,649 $17,666 $2,933 


A summary of nonaccruing loans at December 31, 2023, follows (in thousands): 
As of December 31, 2023
 TotalWith No
Allowance
With AllowanceRelated Allowance
Commercial:    
Healthcare$81,529 $40,372 $41,157 $1,478 
Services3,616 1,684 1,932 1,214 
Energy17,843 17,843 — — 
General business7,143 7,143 — — 
Total commercial110,131 67,042 43,089 2,692 
Commercial real estate7,320 7,320 — — 
Loans to individuals:    
Residential mortgage18,056 18,056 — — 
Residential mortgage guaranteed by U.S. government agencies9,709 9,709 — — 
Personal253 253 — — 
Total loans to individuals28,018 28,018 — — 
Total$145,469 $102,380 $43,089 $2,692 
Summary of Loans by Aging Status [Table Text Block]
A summary of loans currently performing and past due as of September 30, 2024, is as follows (in thousands):
  Past Due Past Due 90 Days or More and Accruing
 Current30 to 59
Days
60 to 89 Days90 Days
or More
Total
Commercial:    
Healthcare$4,138,870 $ $211 $9,988 $4,149,069 $ 
Services3,572,010 1,002  658 3,573,670  
Energy3,097,719 11,526 17,390  3,126,635  
General business4,023,120 198  5,230 4,028,548  
Total commercial14,831,719 12,726 17,601 15,876 14,877,922  
Commercial real estate5,176,417   12,238 5,188,655  
Loans to individuals:    
Residential mortgage2,359,403 6,756 1,812 2,322 2,370,293 597 
Residential mortgage guaranteed by U.S. government agencies44,933 20,956 12,050 49,808 127,747 45,143 
Personal1,420,072 322 27 23 1,420,444  
Total loans to individuals3,824,408 28,034 13,889 52,153 3,918,484 45,740 
Total$23,832,544 $40,760 $31,490 $80,267 $23,985,061 $45,740 
A summary of loans currently performing and past due as of December 31, 2023, is as follows (in thousands):
  Past Due Past Due 90 Days or More and Accruing
 Current30 to 59
Days
60 to 89 Days90 Days
or More
Total
Commercial:    
Healthcare$4,071,336 $18,019 $30,290 $23,588 $4,143,233 $— 
Services3,575,787 — 434 3,576,223 — 
Energy3,437,101 — — — 3,437,101 — 
General business3,639,775 412 1,157 5,868 3,647,212 — 
Total commercial14,723,999 18,433 31,447 29,890 14,803,769 — 
Commercial real estate5,327,481 2,992 — 7,174 5,337,647 
Loans to individuals:    
Residential mortgage2,149,927 6,340 1,494 2,879 2,160,640 36 
Residential mortgage guaranteed by U.S. government agencies
54,122 25,085 17,053 53,547 149,807 48,201 
Personal1,450,302 2,561 88 154 1,453,105 131 
Total loans to individuals3,654,351 33,986 18,635 56,580 3,763,552 48,368 
Total$23,705,831 $55,411 $50,082 $93,644 $23,904,968 $48,371