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Loans and Allowance for Credit Losses (Tables)
 9 Months Ended
Sep. 30, 2023
Receivables [Abstract]  
Schedule of Categories of Loans The various categories of loans are summarized as follows:
 
September 30,December 31,
(In thousands)20232022
Consumer:  
Credit cards$191,550 $196,928 
Other consumer112,832 152,882 
Total consumer304,382 349,810 
Real Estate:
Construction and development3,022,321 2,566,649 
Single family residential2,657,879 2,546,115 
Other commercial7,565,008 7,468,498 
Total real estate13,245,208 12,581,262 
Commercial:
Commercial2,477,077 2,632,290 
Agricultural296,912 205,623 
Total commercial2,773,989 2,837,913 
Other448,309 373,139 
Total loans$16,771,888 $16,142,124 
Schedule of Nonaccrual Loans, Excluding Loans Acquired
The amortized cost basis of nonaccrual loans segregated by category of loans are as follows:

September 30,December 31,
(In thousands)20232022
Consumer:  
Credit cards$267 $349 
Other consumer658 433 
Total consumer925 782 
Real estate:
Construction and development2,964 2,799 
Single family residential23,662 22,319 
Other commercial11,849 14,998 
Total real estate38,475 40,116 
Commercial:
Commercial41,008 17,356 
Agricultural724 177 
Total commercial41,732 17,533 
Other3 3 
Total$81,135 $58,434 
Schedule of Aging Analysis of Past Due Loans, Excluding Loans Acquired
An age analysis of the amortized cost basis of past due loans, including nonaccrual loans, segregated by class of loans is as follows: 
(In thousands)Gross
30-89 Days
Past Due		90 Days
or More
Past Due		Total
Past Due		CurrentTotal
Loans		90 Days
Past Due &
Accruing
September 30, 2023      
Consumer:      
Credit cards$1,973 $672 $2,645 $188,905 $191,550 $588 
Other consumer1,114 252 1,366 111,466 112,832 — 
Total consumer3,087 924 4,011 300,371 304,382 588 
Real estate:
Construction and development481 2,742 3,223 3,019,098 3,022,321 — 
Single family residential13,255 11,846 25,101 2,632,778 2,657,879 121 
Other commercial5,575 2,767 8,342 7,556,666 7,565,008 — 
Total real estate19,311 17,355 36,666 13,208,542 13,245,208 121 
Commercial:
Commercial5,911 20,492 26,403 2,450,674 2,477,077 97 
Agricultural76 126 202 296,710 296,912 — 
Total commercial5,987 20,618 26,605 2,747,384 2,773,989 97 
Other— 3 3 448,306 448,309 — 
Total$28,385 $38,900 $67,285 $16,704,603 $16,771,888 $806 
December 31, 2022
Consumer:
Credit cards$1,297 $409 $1,706 $195,222 $196,928 $225 
Other consumer852 214 1,066 151,816 152,882 — 
Total consumer2,149 623 2,772 347,038 349,810 225 
Real estate:
Construction and development4,677 443 5,120 2,561,529 2,566,649 — 
Single family residential23,625 11,075 34,700 2,511,415 2,546,115 106 
Other commercial2,759 7,100 9,859 7,458,639 7,468,498 — 
Total real estate31,061 18,618 49,679 12,531,583 12,581,262 106 
Commercial:
Commercial5,034 7,575 12,609 2,619,681 2,632,290 176 
Agricultural111 67 178 205,445 205,623 — 
Total commercial5,145 7,642 12,787 2,825,126 2,837,913 176 
Other61 3 64 373,075 373,139 — 
Total$38,416 $26,886 $65,302 $16,076,822 $16,142,124 $507 
Schedule of Troubled Debt Restructuring
The following table presents a summary of the amortized cost basis of loan modifications granted to borrowers experiencing financial difficulty, segregated by class of loans and type of loan modification, for the three and nine month periods ended September 30, 2023.

Percent of
Total Class
(Dollars in thousands)Term Extensionof Loans
Three months ended September 30, 2023
Real estate:
Other commercial$30,617 0.40 %
Total real estate30,617 
Commercial:
Commercial85 — %
Total commercial85 
Total$30,702 
Nine months ended September 30, 2023
Real estate:
Other commercial$30,617 0.40 %
Total real estate30,617 
Commercial:
Commercial736 0.03 %
Total commercial736 
Total$31,353 
The following table presents a summary of TDRs segregated by class of loans as of December 31, 2022.

 Accruing TDR LoansNonaccrual TDR LoansTotal TDR Loans
(Dollars in thousands)NumberBalanceNumberBalanceNumberBalance
Real estate:
Single-family residential24 $1,849 12 $1,589 36 $3,438 
Other commercial— — — — — — 
Total real estate24 1,849 12 1,589 36 3,438 
Commercial:
Commercial— — 1 33 1 33 
Total commercial— — 1 33 1 33 
Total24 $1,849 13 $1,622 37 $3,471 

The following table presents loans that were restructured as TDRs during the three and nine month periods ended September 30, 2022.

(Dollars in thousands)Number of loansBalance Prior to TDRBalance at September 30,Change in Maturity DateChange in RateFinancial Impact on Date of Restructure
Three Months Ended September 30, 2022
Real estate:
Other commercial3 $747 $727 $— $727 $— 
Total real estate3 $747 $727 $— $727 $— 
Nine Months Ended September 30, 2022
Real estate:
Other commercial4 $760 $740 $— $740 $— 
Total real estate4 $760 $740 $— $740 $— 
Schedule of Loans by Credit Risk Rating
The following table presents a summary of loans by credit quality indicator, as of September 30, 2023, segregated by class of loans.

Term Loans Amortized Cost Basis by Origination Year
(In thousands)2023 (YTD)20222021202020192018 and PriorLines of Credit (“LOC”) Amortized Cost BasisLOC Converted to Term Loans Amortized Cost BasisTotal
Consumer - credit cards    
Delinquency:
Current$— $— $— $— $— $— $188,905 $— $188,905 
30-89 days past due— — — — — — 1,973 — 1,973 
90+ days past due— — — — — — 672 — 672 
Total consumer - credit cards— — — — — — 191,550 — 191,550 
Current-period consumer - credit cards gross charge-offs— — — — — — 3,803 — 3,803 
Consumer - other
Delinquency:
Current29,356 43,251 15,022 4,515 2,029 1,557 15,736 — 111,466 
30-89 days past due190 535 192 37 27 42 91 — 1,114 
90+ days past due27 160 50 4 9 — 2 — 252 
Total consumer - other29,573 43,946 15,264 4,556 2,065 1,599 15,829 — 112,832 
Current-period consumer - other gross charge-offs133 606 398 65 29 126 291 — 1,648 
Real estate - C&D
Risk rating:
Pass87,306 170,979 55,250 44,198 12,915 22,780 2,623,588 — 3,017,016 
Special mention— — — — — 401 — — 401 
Substandard— 57 60 — — 263 4,524 — 4,904 
Doubtful and loss— — — — — — — — — 
Total real estate - C&D87,306 171,036 55,310 44,198 12,915 23,444 2,628,112 — 3,022,321 
Current-period real estate - C&D gross charge-offs— 1,148 — — — 8 — — 1,156 
Real estate - SF residential
Delinquency:
Current301,165 645,020 366,070 227,692 135,278 576,964 380,016 573 2,632,778 
30-89 days past due220 1,872 2,243 1,826 424 4,579 2,091 — 13,255 
90+ days past due— 2,201 1,558 549 219 6,086 1,233 — 11,846 
Total real estate - SF residential301,385 649,093 369,871 230,067 135,921 587,629 383,340 573 2,657,879 
Current-period real estate - SF residential gross charge-offs— 44 — 36 — 121 232 — 433 
Real estate - other commercial
Risk rating:
Pass412,274 1,743,049 1,346,771 547,764 244,322 630,657 2,257,149 — 7,181,986 
Special mention27,973 8,527 12,310 6,038 1,369 26,631 94,853 — 177,701 
Substandard4,324 6,364 17,613 9,712 8,406 22,574 136,328 — 205,321 
Doubtful and loss— — — — — — — — — 
Total real estate - other commercial444,571 1,757,940 1,376,694 563,514 254,097 679,862 2,488,330 — 7,565,008 
Current-period real estate - other commercial gross charge-offs— — — 7 — 35 9,731 — 9,773 
Term Loans Amortized Cost Basis by Origination Year
(In thousands)2023 (YTD)20222021202020192018 and PriorLines of Credit (“LOC”) Amortized Cost BasisLOC Converted to Term Loans Amortized Cost BasisTotal
Commercial
Risk rating:
Pass314,762 406,164 220,637 68,506 54,024 64,078 1,276,796 — 2,404,967 
Special mention12 11,946 6,714 30 12 1,095 6,554 — 26,363 
Substandard122 8,718 4,154 1,319 1,457 5,188 24,728 — 45,686 
Doubtful and loss— 61 — — — — — — 61 
Total commercial314,896 426,889 231,505 69,855 55,493 70,361 1,308,078 — 2,477,077 
Current-period commercial - gross charge-offs31 1,288 313 224 178 193 620 — 2,847 
Commercial - agriculture
Risk rating:
Pass31,638 35,414 17,050 6,546 2,883 590 202,001 — 296,122 
Special mention— — — — — — — — — 
Substandard— 496 84 69 40 28 72 — 789 
Doubtful and loss— 1 — — — — — — 1 
Total commercial - agriculture31,638 35,911 17,134 6,615 2,923 618 202,073 — 296,912 
Current-period commercial - agriculture gross charge-offs— 7 — — — 3 — — 10 
Other
Delinquency:
Current27,531 147,346 28,709 7,035 4,098 38,579 195,008 — 448,306 
30-89 days past due— — — — — — — — — 
90+ days past due— — — — — 3 — — 3 
Total other27,531 147,346 28,709 7,035 4,098 38,582 195,008 — 448,309 
Current-period other - gross charge-offs— — — — — — 107 — 107 
Total$1,236,900 $3,232,161 $2,094,487 $925,840 $467,512 $1,402,095 $7,412,320 $573 $16,771,888 
The following table presents a summary of loans by credit quality indicator, as of December 31, 2022, segregated by class of loans.

Term Loans Amortized Cost Basis by Origination Year
(In thousands)202220212020201920182017 and PriorLines of Credit (“LOC”) Amortized Cost BasisLOC Converted to Term Loans Amortized Cost BasisTotal
Consumer - credit cards    
Delinquency:
Current$— $— $— $— $— $— $195,222 $— $195,222 
30-89 days past due— — — — — — 1,297 — 1,297 
90+ days past due— — — — — — 409 — 409 
Total consumer - credit cards— — — — — — 196,928 — 196,928 
Consumer - other
Delinquency:
Current86,303 26,339 10,071 3,804 2,671 2,275 20,350 3 151,816 
30-89 days past due298 241 135 13 34 119 12 — 852 
90+ days past due121 47 2 1 2 41 — — 214 
Total consumer - other86,722 26,627 10,208 3,818 2,707 2,435 20,362 3 152,882 
Real estate - C&D
Risk rating:
Pass237,304 68,916 50,912 16,920 13,625 9,611 2,163,776 334 2,561,398 
Special mention— — — — — 41 1,342 — 1,383 
Substandard1,091 116 36 13 31 103 2,478 — 3,868 
Doubtful and loss— — — — — — — — — 
Total real estate - C&D238,395 69,032 50,948 16,933 13,656 9,755 2,167,596 334 2,566,649 
Real estate - SF residential
Delinquency:
Current700,976 411,885 295,365 141,608 192,176 440,931 324,282 4,192 2,511,415 
30-89 days past due3,105 3,415 1,290 2,018 3,129 8,626 2,042 — 23,625 
90+ days past due586 871 885 968 1,017 6,312 436 — 11,075 
Total real estate - SF residential704,667 416,171 297,540 144,594 196,322 455,869 326,760 4,192 2,546,115 
Real estate - other commercial
Risk rating:
Pass1,917,352 1,482,049 768,630 254,986 179,729 428,027 2,093,379 19,469 7,143,621 
Special mention19,538 32,831 38,821 206 2,261 20,741 104,431 — 218,829 
Substandard24,639 3,399 27,399 2,544 2,026 15,217 30,824 — 106,048 
Doubtful and loss— — — — — — — — — 
Total real estate - other commercial1,961,529 1,518,279 834,850 257,736 184,016 463,985 2,228,634 19,469 7,468,498 
Commercial
Risk rating:
Pass595,256 300,650 168,539 41,924 31,329 35,447 1,401,402 24,940 2,599,487 
Special mention199 1,700 11 32 — 927 2,708 80 5,657 
Substandard5,257 2,435 3,328 802 891 1,290 11,337 1,805 27,145 
Doubtful and loss— — — — — — — 1 1 
Total commercial600,712 304,785 171,878 42,758 32,220 37,664 1,415,447 26,826 2,632,290 
Commercial - agriculture
Risk rating:
Pass44,377 22,901 12,044 4,483 1,029 369 119,342 310 204,855 
Special mention8 — — — — — — — 8 
Substandard55 8 78 49 10 — 560 — 760 
Doubtful and loss— — — — — — — — — 
Total commercial - agriculture44,440 22,909 12,122 4,532 1,039 369 119,902 310 205,623 
Other
Delinquency:
Current152,086 29,362 8,181 4,742 20,018 25,349 132,384 953 373,075 
30-89 days past due— — — — — 61 — — 61 
90+ days past due— — — — — 3 — — 3 
Total other152,086 29,362 8,181 4,742 20,018 25,413 132,384 953 373,139 
Total$3,788,551 $2,387,165 $1,385,727 $475,113 $449,978 $995,490 $6,608,013 $52,087 $16,142,124 
Schedule of the Activity in the Allowance for Loan Losses The collateral securing these loans consist of commercial real estate properties, residential properties, and other business assets.
(In thousands)Real Estate CollateralOther CollateralTotal
September 30, 2023
Construction and development$3,502 $— $3,502 
Single family residential1,442 — 1,442 
Other commercial real estate102,384 — 102,384 
Commercial— 22,164 22,164 
Total$107,328 $22,164 $129,492 
December 31, 2022
Construction and development$2,156 $— $2,156 
Single family residential— — — 
Other commercial real estate65,450 — 65,450 
Commercial— 3,320 3,320 
Total$67,606 $3,320 $70,926 

The following table details activity in the allowance for credit losses by portfolio segment for the three and nine months ended September 30, 2023. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. 

(In thousands)CommercialReal
Estate		Credit
Card		Other
Consumer
and Other		Total
Allowance for credit losses:
Three Months Ended September 30, 2023
Beginning balance, July 1, 2023$30,985 $165,813 $6,330 $6,838 $209,966 
Provision for credit loss expense4,095 16,528 704 (1,105)20,222 
Charge-offs(1,219)(9,723)(1,318)(633)(12,893)
Recoveries245 429 234 344 1,252 
Net (charge-offs) recoveries(974)(9,294)(1,084)(289)(11,641)
Ending balance, September 30, 2023$34,106 $173,047 $5,950 $5,444 $218,547 
Nine Months Ended September 30, 2023
Beginning balance, January 1, 2023$34,406 $150,795 $5,140 $6,614 $196,955 
Provision for credit loss expense774 32,013 3,847 (435)36,199 
Charge-offs(2,857)(11,362)(3,803)(1,755)(19,777)
Recoveries1,783 1,601 766 1,020 5,170 
Net charge-offs(1,074)(9,761)(3,037)(735)(14,607)
Ending balance, September 30, 2023$34,106 $173,047 $5,950 $5,444 $218,547 
Activity in the allowance for credit losses for the three and nine months ended September 30, 2022 was as follows:

(In thousands)CommercialReal
Estate		Credit
Card		Other
Consumer
and Other		Total
Allowance for credit losses:
Three Months Ended September 30, 2022
Beginning balance, July 1, 2022$32,817 $166,481 $6,609 $6,704 $212,611 
Acquisition adjustment for PCD loans1,057 — — — 1,057 
Provision for credit loss expense(613)(17,243)1,119 840 (15,897)
Charge-offs(1,873)(130)(903)(506)(3,412)
Recoveries720 1,982 250 278 3,230 
Net (charge-offs) recoveries(1,153)1,852 (653)(228)(182)
Ending balance, September 30, 2022$32,108 $151,090 $7,075 $7,316 $197,589 
Nine Months Ended September 30, 2022
Beginning balance, January 1, 2022$17,458 $179,270 $3,987 $4,617 $205,332 
Acquisition adjustment for PCD loans1,911 3,187 — 2 5,100 
Provision for credit loss expense19,721 (33,436)5,142 3,168 (5,405)
Charge-offs(8,880)(730)(2,827)(1,438)(13,875)
Recoveries1,898 2,799 773 967 6,437 
Net (charge-offs) recoveries(6,982)2,069 (2,054)(471)(7,438)
Ending balance, September 30, 2022$32,108 $151,090 $7,075 $7,316 $197,589 
The components of the provision for credit losses for the three and nine month periods ended September 30, 2023 and 2022 were as follows:

Three Months Ended
September 30,		Nine Months Ended
September 30,
(In thousands)2023202220232022
Provision for credit losses related to:  
Loans$20,222 $(15,897)$36,199 $(5,405)
Unfunded commitments(11,300)16,000 (16,300)19,453 
Securities - HTM— — 1,826 — 
Securities - AFS(1,200)— 10,274 — 
Total$7,722 $103 $31,999 $14,048 
Schedule of Financing Receivable, Purchased With Credit Deterioration
The following table provides a summary of loans purchased as part of the Spirit acquisition with credit deterioration at acquisition:
(In thousands)CommercialReal
Estate		Credit
Card		Other
Consumer
and Other		Total
Unpaid principal balance$8,258 $66,534 $— $59 $74,851 
PCD allowance for credit loss at acquisition(6,433)(3,187)— (2)(9,622)
Non-credit related discount(378)(998)— (1)(1,377)
Fair value of PCD loans$1,447 $62,349 $— $56 $63,852