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Loans and Allowance for Credit Losses (Tables)
9 Months Ended
Sep. 30, 2023
Receivables [Abstract]  
Summary of Gross Loans by Type
Loans and leases, net of unearned income, are summarized as follows:
September 30,
2023
December 31, 2022
 (dollars in thousands)
Real estate - commercial mortgage$8,106,300 $7,693,835 
Commercial and industrial(1)
4,577,334 4,473,004 
Real-estate - residential mortgage5,279,681 4,737,279 
Real-estate - home equity1,045,438 1,102,838 
Real-estate - construction1,078,263 1,269,925 
Consumer743,976 699,179 
Leases and other loans(2)
346,516 303,487 
Net loans$21,177,508 $20,279,547 
(1) Includes unearned income of $1.1 million and $4.5 million at September 30, 2023 and December 31, 2022, respectively.
(2) Includes unearned income of $37.5 million and $24.8 million at September 30, 2023 and December 31, 2022, respectively.
Schedule of Allowance for Credit Losses
The following table summarizes the ACL - loans balance and the reserve for OBS credit exposures balance as of September 30, 2023 and December 31, 2022:
September 30,
2023
December 31,
2022
(dollars in thousands)
ACL - loans $292,739 $269,366 
Reserve for OBS credit exposures(1)
$16,110 $16,328 
(1) Included in other liabilities on the consolidated balance sheets.
Activity in the Allowance for Credit Losses
The following table presents the activity in the ACL - loans balances:
Three months ended September 30Nine months ended September 30
 2023202220232022
(dollars in thousands)
Balance at beginning of period$287,442 $248,564 $269,366 $249,001 
CECL Day 1 Provision expense 7,954  7,954 
Initial purchased credit deteriorated loans 1,135  1,135 
Loans charged off(7,279)(3,724)(28,969)(7,242)
Recoveries of loans previously charged off2,181 3,272 7,896 11,593 
Net loans (charged off) recovered(5,098)(452)(21,073)4,351 
Provision for credit losses(1)
10,395 9,637 44,446 4,397 
Balance at end of period$292,739 $266,838 $292,739 $266,838 
Provision for OBS credit exposures$(458)$1,367 $(218)$1,157 
Reserve for OBS credit exposures$16,110 $16,074 $16,110 $16,074 
(1) Provision included in the table only includes the portion related to net loans.
The following table presents the activity in the ACL by portfolio segment:

Real Estate 
Commercial
Mortgage
Commercial and
Industrial
Real Estate Residential
Mortgage
Consumer and Home
Equity
Real Estate
Construction
Leases and other loansTotal
 (dollars in thousands)
Three months ended September 30, 2023
Balance at June 30, 2023$72,302 $75,189 $88,849 $28,982 $11,144 $10,976 $287,442 
Loans charged off(860)(3,220) (1,803) (1,396)(7,279)
Recoveries of loans previously charged off101 620 37 1,023  400 2,181 
Net loans (charged off) recovered(759)(2,600)37 (780) (996)(5,098)
Provision for loan losses(1)
2,403 9,766 (2,685)1,873 (2,873)1,911 10,395 
Balance at September 30, 2023$73,946 $82,355 $86,201 $30,075 $8,271 $11,891 $292,739 
Three months ended September 30, 2022
Balance at June 30, 2022$72,605 $72,119 $61,635 $23,080 $10,628 $8,497 $248,564 
CECL Day 1 Provision expense4,107 — 3,716 131 — — 7,954 
Initial purchased credit deteriorated loans1,051 — 77 — — 1,135 
Loans charged off(86)(1,783)— (1,172)— (683)(3,724)
Recoveries of loans previously charged off29 2,213 101 682 — 247 3,272 
Net loans (charged off) recovered(57)430 101 (490)— (436)(452)
Provision for loan and lease losses(1)
11,144 (6,424)1,880 1,812 1,045 180 9,637 
Balance at September 30, 2022$88,850 $66,125 $67,409 $24,540 $11,673 $8,241 $266,838 
Nine months ended September 30, 2023
Balance at December 31, 2022$69,456 $70,116 $83,250 $26,429 $10,743 $9,372 $269,366 
Loans charged off(14,452)(5,849)(62)(5,322) (3,284)(28,969)
Recoveries of loans previously charged off916 2,694 143 2,643 771 729 7,896 
Net loans (charged off) recovered(13,536)(3,155)81 (2,679)771 (2,555)(21,073)
Provision for loan losses(1)
18,026 15,394 2,870 6,325 (3,243)5,074 44,446 
Balance at September 30, 2023$73,946 $82,355 $86,201 $30,075 $8,271 $11,891 $292,739 
Nine months ended September 30, 2022
Balance at December 31, 2021$87,970 $67,056 $54,236 $19,749 $12,941 $7,049 $249,001 
CECL Day 1 Provision expense4,107 — 3,716 131 — — 7,954 
Initial purchased credit deteriorated loans1,051 — 77 — — 1,135 
Loans charged off(238)(2,211)(66)(3,101)— (1,626)(7,242)
Recoveries of loans previously charged off3,677 4,932 415 1,898 44 627 11,593 
Net loans (charged off) recovered3,439 2,721 349 (1,203)44 (999)4,351 
Provision for loan losses(1)
(7,717)(3,652)9,031 5,856 (1,312)2,191 4,397 
Balance at September 30, 2022$88,850 $66,125 $67,409 $24,540 $11,673 $8,241 $266,838 
(1) Provision included in the table only includes the portion related to net loans.
Total Impaired Loans by Class Segment
The following table presents total non-accrual loans, by class segment:
September 30, 2023December 31, 2022
With a Related AllowanceWithout a Related AllowanceTotalWith a Related AllowanceWithout a Related AllowanceTotal
(dollars in thousands)
Real estate - commercial mortgage$22,550 $20,199 $42,749 $39,722 $30,439 $70,161 
Commercial and industrial17,956 14,239 32,195 14,804 12,312 27,116 
Real estate - residential mortgage20,101 1,053 21,154 25,315 979 26,294 
Real estate - home equity5,422 110 5,532 5,975 130 6,105 
Real estate - construction340 337 677 866 502 1,368 
Consumer15  15 92 — 92 
Leases and other loans9,255 1,445 10,700 4,052 9,255 13,307 
$75,639 $37,383 $113,022 $90,826 $53,617 $144,443 
Financing Receivable Credit Quality Indicators
The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the current period:
September 30, 2023
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(in thousands)AmortizedAmortized
20232022202120202019PriorCost BasisCost BasisTotal
Real estate - commercial mortgage
Pass$599,679 $1,018,639 $1,307,915 $964,569 $763,273 $2,950,509 $57,549 $34,133 $7,696,266 
Special Mention— 24,531 48,761 6,087 28,454 107,064 2,430 — 217,327 
Substandard or Lower194 14,907 26,003 50,751 27,689 72,676 487 — 192,707 
Total real estate - commercial mortgage599,873 1,058,077 1,382,679 1,021,407 819,416 3,130,249 60,466 34,133 8,106,300 
Real estate - commercial mortgage
Current period gross charge-offs— — — — — (30)— (14,422)(14,452)
Commercial and industrial(1)
Pass568,053 617,462 365,847 353,550 282,877 670,312 1,435,287 14,873 4,308,261 
Special Mention739 11,003 14,641 4,913 4,648 13,313 55,448 237 104,942 
Substandard or Lower205 12,136 1,974 3,921 19,693 23,766 101,529 907 164,131 
Total commercial and industrial568,997 640,601 382,462 362,384 307,218 707,391 1,592,264 16,017 4,577,334 
Commercial and industrial(1)
Current period gross charge-offs— — — — — — (682)(5,167)(5,849)
 Real estate - construction(2)
Pass194,777 224,814 261,417 63,984 10,264 35,247 15,083 — 805,586 
Special Mention— — — 28,292 — 7,732 — — 36,024 
Substandard or Lower— 448 — — 340 15,265 2,403 — 18,456 
Total real estate - construction194,777 225,262 261,417 92,276 10,604 58,244 17,486 — 860,066 
Real estate - construction(2)
Current period gross charge-offs— — — — — — — — — 
Total
Pass$1,362,509 $1,860,915 $1,935,179 $1,382,103 $1,056,414 $3,656,068 $1,507,919 $49,006 $12,810,113 
Special Mention739 35,534 63,402 39,292 33,102 128,109 57,878 237 358,293 
Substandard or Lower399 27,491 27,977 54,672 47,722 111,707 104,419 907 375,294 
Total$1,363,647 $1,923,940 $2,026,558 $1,476,067 $1,137,238 $3,895,884 $1,670,216 $50,150 $13,543,700 
(1) Loans originated in 2021 and 2020 include $6.7 million of PPP loans that were assigned a rating of Pass based on the existence of a federal government
guaranty through the SBA.
(2) Excludes real estate - construction - other.
The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the prior period:
December 31, 2022
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(dollars in thousands)AmortizedAmortized
20222021202020192018PriorCost BasisCost BasisTotal
Real estate - commercial mortgage
Pass$1,014,575 $1,095,725 $969,118 $810,850 $621,689 $2,610,511 $80,665 $307 $7,203,440 
Special Mention95 50,367 23,296 33,735 16,205 181,736 947 — 306,381 
Substandard or Lower1,032 3,039 31,042 38,378 23,112 87,168 243 — 184,014 
Total real estate - commercial mortgage1,015,702 1,149,131 1,023,456 882,963 661,006 2,879,415 81,855 307 7,693,835 
Real estate - commercial mortgage
Current period gross charge-offs— — — — — (53)— (12,420)(12,473)
Commercial and industrial(1)
Pass907,390 449,145 397,881 315,605 185,096 604,352 1,387,961 618 4,248,048 
Special Mention11,405 24,479 3,763 8,147 5,218 24,633 56,048 250 133,943 
Substandard or Lower834 418 4,818 13,044 3,081 22,025 51,077 249 95,546 
Total commercial and industrial919,629 474,042 406,462 336,796 193,395 651,010 1,495,086 1,117 4,477,537 
Commercial and industrial(1)
Current period gross charge-offs— — (36)— (21)(365)(1,192)(776)(2,390)
Real estate - construction(2)
Pass159,195 390,993 243,406 28,539 24,421 93,511 47,271 — 987,336 
Special Mention— — — — — 21,603 — — 21,603 
Substandard or Lower— — 3,852 2,274 — 4,272 203 — 10,601 
Total real estate - construction159,195 390,993 247,258 30,813 24,421 119,386 47,474 — 1,019,540 
Real estate - construction(2)
Current period gross charge-offs— — — — — — — — — 
Total
Pass$2,081,160 $1,935,863 $1,610,405 $1,154,994 $831,206 $3,308,374 $1,515,897 $925 $12,438,824 
Special Mention11,500 74,846 27,059 41,882 21,423 227,972 56,995 250 461,927 
Substandard or Lower1,866 3,457 39,712 53,696 26,193 113,465 51,523 249 290,161 
Total$2,094,526 $2,014,166 $1,677,176 $1,250,572 $878,822 $3,649,811 $1,624,415 $1,424 $13,190,912 
(1) Loans originated in 2021 and 2020 include $20.4 million of PPP loans that were assigned a rating of Pass based on the existence of a federal government
guaranty through the SBA.
(2) Excludes real estate - construction - other.
The following tables present the amortized cost of these loans based on payment activity, by origination year, for the periods shown:
September 30, 2023
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(dollars in thousands)AmortizedAmortized
20232022202120202019PriorCost BasisCost BasisTotal
Real estate - residential mortgage
Performing$540,015 $1,097,965 $1,702,327 $999,666 $269,656 $629,492 $— $— $5,239,121 
Nonperforming— 804 3,611 5,011 5,633 25,501 — — 40,560 
    Total real estate - residential mortgage540,015 1,098,769 1,705,938 1,004,677 275,289 654,993 — — 5,279,681 
Real estate - residential mortgage
Current period gross charge-offs— — — — — — — (62)(62)
Consumer and real estate - home equity
Performing248,499 296,227 91,876 67,535 41,289 224,270 798,617 9,521 1,777,834 
Nonperforming20 381 906 428 262 7,267 1,463 853 11,580 
Total consumer and real estate - home equity248,519 296,608 92,782 67,963 41,551 231,537 800,080 10,374 1,789,414 
Consumer and real estate - home equity
Current period gross charge-offs— — — — — (523)(22)(4,777)(5,322)
Leases and other loans
Performing158,933 89,264 30,908 25,186 19,150 12,331 — — 335,772 
Nonperforming— 43 — — — 10,701 — — 10,744 
Leases and other loans158,933 89,307 30,908 25,186 19,150 23,032 — — 346,516 
Leases and other loans
Current period gross charge-offs(471)(521)(246)(128)(82)(656)— (1,180)(3,284)
Construction - other
Performing81,142 121,659 14,666 730 — — — — 218,197 
Nonperforming— — — — — — — — — 
Total construction - other81,142 121,659 14,666 730 — — — — 218,197 
Construction - other
Current period gross charge-offs— — — — — — — — — 
Total
Performing$1,028,589 $1,605,115 $1,839,777 $1,093,117 $330,095 $866,093 $798,617 $9,521 $7,570,924 
Nonperforming20 1,228 4,517 5,439 5,895 43,469 1,463 853 62,884 
Total$1,028,609 $1,606,343 $1,844,294 $1,098,556 $335,990 $909,562 $800,080 $10,374 $7,633,808 
December 31, 2022
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(dollars in thousands)AmortizedAmortized
20222021202020192018PriorCost BasisCost BasisTotal
Real estate - residential mortgage
Performing$933,903 $1,708,703 $1,054,126 $286,167 $87,455 $620,416 $— $— $4,690,770 
Nonperforming1,199 5,104 6,597 6,466 4,587 22,556 — — 46,509 
    Total real estate - residential mortgage935,102 1,713,807 1,060,723 292,633 92,042 642,972 — — 4,737,279 
Real estate - residential mortgage
Current period gross charge-offs— — — — — — — (66)(66)
Consumer and Real estate - home equity
Performing416,631 109,724 80,422 52,384 45,642 211,127 842,226 34,061 1,792,217 
Nonperforming292 298 174 36 98 6,512 1,722 668 9,800 
Total consumer and real estate - home equity416,923 110,022 80,596 52,420 45,740 217,639 843,948 34,729 1,802,017 
Consumer and Real estate - home equity
Current period gross charge-offs— (587)(70)(108)(16)(442)(178)(3,011)(4,412)
Leases and other loans
Performing146,198 39,427 40,024 29,309 15,019 15,670 — — 285,647 
Nonperforming— — — — — 13,307 — — 13,307 
Leases and other loans146,198 39,427 40,024 29,309 15,019 28,977 — — 298,954 
Leases and other loans
Current period gross charge-offs(506)(167)(140)(80)(47)(1,191)— — (2,131)
Construction - other
Performing164,924 73,492 10,892 — 1,077 — — — 250,385 
Nonperforming— — — — — — — — — 
Total construction - other164,924 73,492 10,892 — 1,077 — — — 250,385 
Construction - other
Current period gross charge-offs— — — — — — — — — 
Total
Performing$1,661,656 $1,931,346 $1,185,464 $367,860 $149,193 $847,213 $842,226 $34,061 $7,019,019 
Nonperforming1,491 5,402 6,771 6,502 4,685 42,375 1,722 668 69,616 
Total$1,663,147 $1,936,748 $1,192,235 $374,362 $153,878 $889,588 $843,948 $34,729 $7,088,635 
Non-Performing Assets
The following table presents non-performing assets:
September 30,
2023
December 31,
2022
 (dollars in thousands)
Non-accrual loans$113,022 $144,443 
Loans 90 days or more past due and still accruing(1)
27,962 27,463 
Total non-performing loans140,984 171,906 
OREO(2)
2,549 5,790 
Total non-performing assets$143,533 $177,696 
(1) Excludes PPP loans which are fully guaranteed by the federal government of $1.2 million and $7.7 million as of September 30, 2023 and December 31,
2022, respectively.
(2) Excludes $10.1 million and $6.0 million of residential mortgage properties for which formal foreclosure proceedings were in process as of September 30,
2023 and December 31, 2022, respectively.
Past due Loan Status and Non-Accrual Loans by Portfolio Segment
The following tables present the aging of the amortized cost basis of loans, by class segment:
30-5960-89≥ 90 Days
Days PastDays PastPast DueNon-
DueDueand AccruingAccrualCurrentTotal
(dollars in thousands)
September 30, 2023
Real estate – commercial mortgage$8,976 $1,819 $1,309 $42,749 $8,051,447 $8,106,300 
Commercial and industrial(1)(2)
4,097 2,921 1,170 32,195 4,536,951 4,577,334 
Real estate – residential mortgage44,563 10,146 19,406 21,154 5,184,412 5,279,681 
Real estate – home equity6,288 3,544 4,909 5,532 1,025,165 1,045,438 
Real estate – construction2,681 330  677 1,074,575 1,078,263 
Consumer8,511 1,458 1,124 15 732,868 743,976 
Leases and other loans(2)
357 148 44 10,700 335,267 346,516 
Total$75,473 $20,366 $27,962 $113,022 $20,940,685 $21,177,508 
(1) Excludes delinquent PPP loans 30-59 days past due, 60-89 days past due and 90 days or more past due of $0.1 million, $0.1 million and $1.2 million,
respectively, which are fully guaranteed by the federal government and are classified as current.
(2) Includes unearned income.

30-59 Days Past
Due
60-89
Days Past
Due
≥ 90 Days
Past Due
and
Accruing
Non-
accrual
CurrentTotal
(dollars in thousands)
December 31, 2022
Real estate – commercial mortgage$10,753 $4,644 $2,473 $70,161 $7,605,804 $7,693,835 
Commercial and industrial(1)(2)
6,067 2,289 1,172 27,116 4,436,360 4,473,004 
Real estate – residential mortgage57,061 8,209 20,215 26,294 4,625,500 4,737,279 
Real estate – home equity5,666 2,444 2,704 6,105 1,085,919 1,102,838 
Real estate – construction1,762 1,758 — 1,368 1,265,037 1,269,925 
Consumer6,692 1,339 899 92 690,157 699,179 
Leases and other loans(2)
348 122 — 13,307 289,710 303,487 
Total$88,349 $20,805 $27,463 $144,443 $19,998,487 $20,279,547 
(1) Excludes delinquent PPP loans 30-59 days past due, 60-89 days past due and 90 days or more past due of $0.1 million, $0.7 million and $7.7 million,
respectively, which are fully guaranteed by the federal government and are classified as current.
(2) Includes unearned income.
Financing Receivables, Loan Modifications
The following table presents the amortized cost basis during the three months and nine months ended September 30, 2023 of the loans modified to borrowers experiencing financial difficulty, disaggregated by class of financing receivable and type of concession granted:
Term Extension
Three months ended September 30, 2023Nine months ended September 30, 2023
Amortization Cost Basis% of Class of Financing ReceivableAmortization Cost Basis% of Class of Financing Receivable
(dollars in thousands)
Real estate - commercial mortgage$1,120 0.01 %$2,556 0.03 %
Commercial and industrial7  66  
Real estate - residential mortgage1,933 0.04 5,343 0.10 
Total$3,060 $7,965 
The following table presents the financial effect of the modifications made to borrowers experiencing financial difficulty for the three months and nine months ended September 30, 2023:

Term Extension
Financial Effect
Three months ended September 30, 2023
Real estate - commercial mortgage
Added a weighted-average 0.50 years to the life of loans, which reduced monthly payment amounts for the borrowers.
Commercial and industrial
Added a weighted-average 0.92 years to the life of loans, which reduced monthly payment amounts for the borrowers.
Real estate - residential mortgage
Added a weighted-average 4.49 years to the life of loans, which reduced monthly payment amounts for the borrowers.
Nine months ended September 30, 2023
Real estate - commercial mortgage
Added a weighted-average 2.43 years to the life of loans, which reduced monthly payment amounts for the borrowers.
Commercial and industrial
Added a weighted-average 3.76 years to the life of loans, which reduced monthly payment amounts for the borrowers.
Real estate - residential mortgage
Added a weighted-average 4.58 years to the life of loans, which reduced monthly payment amounts for the borrowers.
The following table presents the performance of loans that have been modified in the last nine months as of September 30, 2023.

30-8990+Total
Days PastPast DuePast
CurrentDueand AccruingDue
(dollars in thousands)
Real estate - commercial mortgage$2,556 $— $— $— 
Commercial and industrial66 — — — 
Real estate - residential mortgage5,343 — — — 
Total$7,965 $— $— $—