XML 52 R35.htm IDEA: XBRL DOCUMENT v3.24.0.1
Loans and Allowances for Credit Losses (Tables)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Loans and Leases Receivable, Net Amount [Abstract]    
Schedule of the Loans by Portfolio Segment [Table Text Block]
The portfolio segments of the loan portfolio are as follows (in thousands):
 December 31, 2023December 31, 2022
Fixed
Rate		Variable
Rate		Non-accrualTotalFixed
Rate		Variable
Rate
Non-
accrual
Total
Commercial$3,558,563 $11,135,075 $110,131 $14,803,769 $3,392,422 $10,759,780 $60,297 $14,212,499 
Commercial real estate
791,757 4,538,570 7,320 5,337,647 874,716 3,715,491 16,570 4,606,777 
Loans to individuals2,282,914 1,452,620 28,018 3,763,552 2,099,165 1,593,779 44,930 3,737,874 
Total$6,633,234 $17,126,265 $145,469 $23,904,968 $6,366,303 $16,069,050 $121,797 $22,557,150 
Foregone interest on nonaccrual loans
$7,863 $6,796 
  
Rollforward of Allowance For Loan Losses And Accrual for Off-Balnace 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 for the year ended December 31, 2023 is summarized as follows (in thousands):
 CommercialCommercial Real EstateLoans to
Individuals		Total
Allowance for loan losses:    
Beginning balance$131,586 $57,648 $46,470 $235,704 
Provision for loan losses19,308 42,151 (1,941)59,518 
Loans charged off(12,898)(8,446)(5,972)(27,316)
Recoveries of loans previously charged off3,236 3,365 2,616 9,217 
Ending balance$141,232 $94,718 $41,173 $277,123 
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
1,516 (13,051)(407)(11,942)
Ending balance$19,762 $27,439 $1,776 $48,977 

A $46.0 million provision for credit losses was recorded for the year ended December 31, 2023, primarily due to loan growth and changes in our economic forecast during the year, including a more challenging commercial real estate environment.

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 for the year ended December 31, 2022 is summarized as follows (in thousands):

 CommercialCommercial Real EstateLoans to
Individuals		Total
Allowance for loan losses:    
Beginning balance$162,056 $58,553 $35,812 $256,421 
Provision for loan losses(12,782)(813)14,023 428 
Loans charged off(22,382)(269)(6,095)(28,746)
Recoveries of loans previously charged off4,694 177 2,730 7,601 
Ending balance$131,586 $57,648 $46,470 $235,704 
Allowance for off-balance sheet credit risk from unfunded loan commitments:    
Beginning balance$13,812 $17,442 $1,723 $32,977 
Provision for off-balance sheet credit risk
4,434 23,048 460 27,942 
Ending balance$18,246 $40,490 $2,183 $60,919 
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 for the year ended December 31, 2021 summarized as follows (in thousands):

 CommercialCommercial Real EstateLoans to IndividualsTotal
Allowance for loan losses:    
Beginning balance$254,934 $86,558 $47,148 $388,640 
Provision for loan losses(59,326)(26,522)(9,354)(95,202)
Loans charged off(43,956)(2,485)(4,910)(51,351)
Recoveries10,404 1,002 2,928 14,334 
Ending balance$162,056 $58,553 $35,812 $256,421 
Allowance for off-balance sheet credit risk from unfunded loan commitments:    
Beginning balance$14,422 $20,571 $1,928 $36,921 
Provision for off-balance sheet credit losses(610)(3,129)(205)(3,944)
Ending balance$13,812 $17,442 $1,723 $32,977 

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment 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 


The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2022 is as follows (in thousands):

 Collectively Measured
for General Allowances		Individually Measured
for Specific Allowances		Total
 Recorded InvestmentRelated AllowanceRecorded InvestmentRelated AllowanceRecorded InvestmentRelated
Allowance
Commercial$14,152,202 $127,566 $60,297 $4,020 $14,212,499 $131,586 
Commercial real estate4,590,207 56,098 16,570 1,550 4,606,777 57,648 
Loans to individuals3,692,944 46,470 44,930 — 3,737,874 46,470 
Total$22,435,353 $230,134 $121,797 $5,570 $22,557,150 $235,704 
  
Schedule of Credit Quality Indicators [Table Text Block]
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 5 — 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 
Energy
Pass190,122 100,006 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 
Loans charged off, year-to-date
— — — — — — — — — 
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 
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 5 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 2 — 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 Substandard
2,992 — 3 — — 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 4 — 17 — 1 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 agencies
633 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 8 — 1,918 3 2,170 
Accruing Substandard— 64 12 9 144 — 3 — 232 
Nonaccrual4 51 9 16 3 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 6 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.
The following table summarizes the Company's loan portfolio at December 31, 2022 by the risk grade categories and vintage (in thousands):
Origination Year
20222021202020192018PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
Commercial:
Healthcare
Pass$932,097 $604,886 $476,854 $404,204 $464,989 $618,163 $245,898 $20 $3,747,111 
Special Mention— — — 20,071 — 18,859 4 — 38,934 
Accruing Substandard— — — — — 14,304 3,634 — 17,938 
Nonaccrual— — — 26,480 6,373 8,181 — — 41,034 
Total healthcare932,097 604,886 476,854 450,755 471,362 659,507 249,536 20 3,845,017 
Energy
Pass157,745 76,951 30,284 12,783 5,992 4,980 3,104,906 — 3,393,641 
Accruing Substandard— — — 664 385 683 28,018 — 29,750 
Nonaccrual— — — — — 159 1,240 — 1,399 
Total energy157,745 76,951 30,284 13,447 6,377 5,822 3,134,164 — 3,424,790 
Services
Pass821,785 496,510 286,085 193,481 156,736 696,300 722,371 639 3,373,907 
Special Mention502 5,139 989 771 894 1,345 8,668 — 18,308 
Accruing Substandard— — — 2,459 43 2,789 17,665 122 23,078 
Nonaccrual— 5,570 449 — — 2,389 7,820 — 16,228 
Total services822,287 507,219 287,523 196,711 157,673 702,823 756,524 761 3,431,521 
General business
Pass725,894 361,839 198,274 172,878 139,140 283,694 1,570,536 2,329 3,454,584 
Special Mention17,759 13,065 208 71 7 2,291 7,094 26 40,521 
Accruing Substandard— 2,169 66 4,130 4,680 3,287 94 4 14,430 
Nonaccrual— — 1,052 14 72 5 485 8 1,636 
Total general business743,653 377,073 199,600 177,093 143,899 289,277 1,578,209 2,367 3,511,171 
Total commercial2,655,782 1,566,129 994,261 838,006 779,311 1,657,429 5,718,433 3,148 14,212,499 
Commercial real estate:
Pass1,188,483 1,158,002 552,616 641,102 247,625 633,304 161,616 — 4,582,748 
Accruing Substandard— — — 7,459 — — — — 7,459 
Nonaccrual— — — — — 16,570 — — 16,570 
Total commercial real estate1,188,483 1,158,002 552,616 648,561 247,625 649,874 161,616 — 4,606,777 
Origination Year
20222021202020192018PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
Loans to individuals:
Residential mortgage
Pass354,497 373,190 393,002 63,142 40,525 260,625 352,126 22,176 1,859,283 
Special Mention— 81 42 — 142 388 527 87 1,267 
Accruing Substandard— — 187 — — 138 117 1 443 
Nonaccrual32 1,656 2,717 362 1,904 20,139 2,216 765 29,791 
Total residential mortgage354,529 374,927 395,948 63,504 42,571 281,290 354,986 23,029 1,890,784 
Residential mortgage guaranteed by U.S. government agencies
Pass289 2,254 9,000 10,722 17,244 191,426 — — 230,935 
Nonaccrual— — 299 1,460 2,319 10,927 — — 15,005 
Total residential mortgage guaranteed by U.S. government agencies
289 2,254 9,299 12,182 19,563 202,353 — — 245,940 
Personal
Pass254,497 193,095 154,887 172,114 68,871 201,278 549,187 332 1,594,261 
Special Mention47 28 40 12 17 — 6,003 4 6,151 
Accruing Substandard— 444 — 160 — — — — 604 
Nonaccrual38 7 12 22 14 18 23 — 134 
Total personal254,582 193,574 154,939 172,308 68,902 201,296 555,213 336 1,601,150 
Total loans to individuals609,400 570,755 560,186 247,994 131,036 684,939 910,199 23,365 3,737,874 
Total loans$4,453,665 $3,294,886 $2,107,063 $1,734,561 $1,157,972 $2,992,242 $6,790,248 $26,513 $22,557,150 
  
Financing Receivable, Nonaccrual [Table Text Block]
A summary of nonaccruing loans as of December 31, 2023 follows (in thousands): 
 TotalWith No
Allowance		With AllowanceRelated Allowance
Commercial:    
Healthcare$81,529 $40,372 $41,157 $1,478 
Energy17,843 17,843 — — 
Services3,616 1,684 1,932 1,214 
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 agencies
9,709 9,709 — — 
Personal253 253 — — 
Total loans to individuals28,018 28,018 — — 
Total$145,469 $102,380 $43,089 $2,692 

A summary of nonaccruing loans as of December 31, 2022 follows (in thousands):
 TotalWith No
Allowance		With AllowanceRelated Allowance
Commercial:    
Healthcare$41,034 $34,661 $6,373 $946 
Energy
1,399 1,399 — — 
Services16,228 7,835 8,393 3,074 
General business1,636 1,636 — — 
Total commercial60,297 45,531 14,766 4,020 
Commercial real estate16,570 393 16,177 1,550 
Loans to individuals:    
Residential mortgage29,791 29,791 — — 
Residential mortgage guaranteed by U.S. government agencies
15,005 15,005 — — 
Personal134 134 — — 
Total loans to individuals44,930 44,930 — — 
Total$121,797 $90,854 $30,943 $5,570 
  
Summary of Loans by Aging Status [Table Text Block]
A summary of loans currently performing and past due as of December 31, 2023 is as follows (in thousands):
  Past Due 
 Current30 to 59
Days		60 to 89
Days		90 Days
or More		TotalPast Due 90 Days or More and Accruing
Commercial:    
Healthcare$4,071,336 $18,019 $30,290 $23,588 $4,143,233 $— 
Services3,575,787 2 — 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 3 
Loans to individuals:    
Permanent mortgage2,149,927 6,340 1,494 2,879 2,160,640 36 
Permanent mortgages 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 
A summary of loans currently performing and past due as of December 31, 2022 is as follows (in thousands):

  Past Due 
 Current30 to 59
Days		60 to 89
Days		90 Days
or More		TotalPast Due 90 Days or More and Accruing
Commercial:    
Healthcare$3,812,164 $5,914 $26,480 $459 $3,845,017 $— 
Services3,423,042 1,060 2,461 4,958 3,431,521 — 
Energy3,424,766 24 — — 3,424,790 — 
General business3,509,094 257 1,424 396 3,511,171 396 
Total commercial14,169,066 7,255 30,365 5,813 14,212,499 396 
Commercial real estate4,606,029 531 — 217 4,606,777 — 
Loans to individuals:    
Permanent mortgage1,872,155 10,632 1,828 6,169 1,890,784 114 
Permanent mortgages guaranteed by U.S. government agencies
108,019 36,119 19,400 82,402 245,940 75,604 
Personal1,600,595 502 21 32 1,601,150 — 
Total loans to individuals3,580,769 47,253 21,249 88,603 3,737,874 75,718 
Total$22,355,864 $55,039 $51,614 $94,633 $22,557,150 $76,114