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Loans, Allowance for Credit Losses and Credit Quality (Tables)
9 Months Ended
Sep. 30, 2024
Receivables [Abstract]  
Financing Receivable, Allowance for Credit Loss [Table Text Block]
The following table summarizes the change in allowance for credit losses by loan category, and bifurcates the amount of loans allocated to each loan category for the period indicated:
 Three Months Ended September 30, 2024
 (Dollars in thousands)
 Commercial and
Industrial
Commercial
Real Estate
Commercial
Construction
Small
Business
Residential
Real Estate
      
Home  Equity
Other ConsumerTotal
Allowance for credit losses
Beginning balance$20,884 $80,501 $7,804 $4,059 $24,836 $11,755 $1,020 $150,859 
Charge-offs(5,886)— — (163)— (38)(919)(7,006)
Recoveries— — — 14 323 343 
Provision for (release of) credit losses936 19,121 (278)206 (333)(570)418 19,500 
Ending balance (1)$15,937 $99,622 $7,526 $4,105 $24,503 $11,161 $842 $163,696 
Three Months Ended September 30, 2023
(Dollars in thousands)
Commercial and
Industrial
Commercial
Real Estate
Commercial
Construction
Small
Business
Residential
Real Estate
Home  EquityOther ConsumerTotal
Allowance for credit losses
Beginning balance$15,142 $78,396 $9,038 $3,606 $21,465 $12,433 $567 $140,647 
Charge-offs— (5,072)— (112)— — (834)(6,018)
Recoveries111 — — 35 — 12 282 440 
Provision for (release of) credit losses1,681 1,078 (208)385 1,682 101 781 5,500 
Ending balance (1)$16,934 $74,402 $8,830 $3,914 $23,147 $12,546 $796 $140,569 
Nine Months Ended September 30, 2024
(Dollars in thousands)
Commercial and
Industrial
Commercial
Real Estate
Commercial
Construction
Small
Business
Residential
Real Estate
Home  EquityOther ConsumerTotal
Allowance for credit losses
Beginning balance$19,243 $74,148 $7,683 $3,963 $23,637 $12,797 $751 $142,222 
Charge-offs(5,886)— — (332)— (49)(2,428)(8,695)
Recoveries90 — — 54 — 295 980 1,419 
Provision for (release of) credit losses2,490 25,474 (157)420 866 (1,882)1,539 28,750 
Ending balance (1)$15,937 $99,622 $7,526 $4,105 $24,503 $11,161 $842 $163,696 
 Nine Months Ended September 30, 2023
 (Dollars in thousands)
 Commercial and
Industrial
Commercial
Real Estate
Commercial
Construction
Small
Business
Residential
Real Estate
      
Home  Equity
Other ConsumerTotal
Allowance for credit losses
Beginning balance$27,559 $77,799 $10,762 $2,834 $20,973 $11,504 $988 $152,419 
Charge-offs(23,471)(5,072)— (199)— — (1,858)(30,600)
Recoveries132 — — 74 — 38 756 1,000 
Provision for (release of) credit losses12,714 1,675 (1,932)1,205 2,174 1,004 910 17,750 
Ending balance (1)$16,934 $74,402 $8,830 $3,914 $23,147 $12,546 $796 $140,569 
(1)Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $55.3 million and $58.1 million as of September 30, 2024 and September 30, 2023, respectively.
Financing Receivable Credit Quality Indicators [Table Text Block]
The following table details the amortized cost balances of the Company's loan portfolios, presented by credit quality indicator and origination year as of the dates indicated below:
 September 30, 2024
20242023202220212020PriorRevolving LoansRevolving converted to TermTotal (1)
 (Dollars in thousands)
Commercial and
industrial
Pass $282,973 $188,687 $133,680 $61,678 $41,639 $129,637 $682,099 $— $1,520,393 
Special mention11,775 194 946 346 — 113 4,702 — 18,076 
Substandard2,103 161 35 455 — 22 24,964 — 27,740 
Doubtful— — — — — — 11,652 — 11,652 
Loss— — — — — — — — — 
Total commercial and industrial$296,851 $189,042 $134,661 $62,479 $41,639 $129,772 $723,417 $— $1,577,861 
Current-period gross write-offs$— $— $— $— $— $— $5,886 $— $5,886 
Commercial real estate
Pass$744,344 $1,053,780 $1,179,121 $1,256,074 $1,151,010 $2,298,419 $96,822 $1,116 $7,780,686 
Special mention7,442 6,350 29,443 13,085 12,691 101,133 — — 170,144 
Substandard32,609 13,017 25,442 29,264 31,070 6,076 — — 137,478 
Doubtful— 54,637 — 11,660 — 7,415 — — 73,712 
Loss— — — — — — — — — 
Total commercial real estate$784,395 $1,127,784 $1,234,006 $1,310,083 $1,194,771 $2,413,043 $96,822 $1,116 $8,162,020 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Commercial construction
Pass$140,421 $176,796 $218,298 $89,854 $— $24,783 $27,213 $902 $678,267 
Special mention— 1,925 15,540 6,065 — — — — 23,530 
Substandard31,125 — 9,120 — — — — — 40,245 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total commercial construction$171,546 $178,721 $242,958 $95,919 $— $24,783 $27,213 $902 $742,042 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Small business
Pass$38,687 $45,927 $45,358 $34,503 $22,766 $29,356 $50,009 $51 $266,657 
Special mention— 104 27 174 — 224 784 — 1,313 
Substandard389 396 65 183 391 621 — 2,048 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total small business$39,076 $46,427 $45,450 $34,680 $22,949 $29,971 $51,414 $51 $270,018 
Current-period gross write-offs$48 $— $28 $— $— $— $256 $— $332 
Residential real estate
Pass$134,868 $482,280 $615,795 $387,127 $177,583 $640,992 $— $— $2,438,645 
Default— 213 — 659 — 2,342 — — 3,214 
Total residential real estate$134,868 $482,493 $615,795 $387,786 $177,583 $643,334 $— $— $2,441,859 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Home equity
Pass$14,034 $25,276 $34,092 $50,948 $46,614 $132,804 $813,118 $11,612 $1,128,498 
Default— — — — — 170 1,532 235 1,937 
Total home equity$14,034 $25,276 $34,092 $50,948 $46,614 $132,974 $814,650 $11,847 $1,130,435 
Current-period gross write-offs$— $— $— $— $— $— $49 $— $49 
Other consumer (2)
Pass$559 $486 $159 $703 $300 $1,279 $33,071 $— $36,557 
Default— — — — — 14 — 15 
Total other consumer$559 $486 $159 $703 $300 $1,293 $33,072 $— $36,572 
Current-period gross write-offs $2,413 $— $— $— $— $— $15 $— $2,428 
Total$1,441,329 $2,050,229 $2,307,121 $1,942,598 $1,483,856 $3,375,170 $1,746,588 $13,916 $14,360,807 
Total current-period gross write-offs$2,461 $— $28 $— $— $— $6,206 $— $8,695 
September 30, 2023
20232022202120202019PriorRevolving LoansRevolving converted to TermTotal (1)
(Dollars in thousands)
Commercial and
industrial
Pass$303,838 $188,559 $94,714 $73,366 $45,741 $116,052 $737,335 $— $1,559,605 
Special mention6,511 2,417 614 10,278 90 132 46,706 — 66,748 
Substandard1,933 4,707 1,074 132 1,165 806 16,833 — 26,650 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total commercial and industrial$312,282 $195,683 $96,402 $83,776 $46,996 $116,990 $800,874 $— $1,653,003 
Current-period gross write-offs$— $— $— $— $— $34 $23,437 $— $23,471 
Commercial real estate
Pass$795,830 $1,160,497 $1,338,792 $1,312,240 $610,009 $2,188,221 $68,496 $858 $7,474,943 
Special mention62,572 37,695 57,987 14,662 2,945 118,830 — — 294,691 
Substandard30,667 27,504 23,568 4,321 19,211 21,325 — — 126,596 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total commercial real estate$889,069 $1,225,696 $1,420,347 $1,331,223 $632,165 $2,328,376 $68,496 $858 $7,896,230 
Current-period gross write-offs$— $5,072 $— $— $— $— $— $— $5,072 
Commercial construction
Pass$146,278 $491,098 $201,730 $9,939 $27,304 $1,569 $17,248 $— $895,166 
Special mention13,484 — 4,823 — — — — — 18,307 
Substandard9,440 26,199 16,330 — — — — — 51,969 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total commercial construction$169,202 $517,297 $222,883 $9,939 $27,304 $1,569 $17,248 $— $965,442 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Small business
Pass$40,551 $52,883 $40,706 $26,759 $13,759 $23,458 $43,759 $— $241,875 
Special mention— — — 155 — 186 295 — 636 
Substandard429 324 126 295 — 615 1,035 — 2,824 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total small business$40,980 $53,207 $40,832 $27,209 $13,759 $24,259 $45,089 $— $245,335 
Current-period gross write-offs$— $— $22 $37 $— $— $140 $— $199 
Residential real estate
Pass$391,121 $645,593 $408,752 $186,334 $89,911 $612,878 $— $— $2,334,589 
Default219 — 393 135 942 1,824 — — 3,513 
Total residential real estate$391,340 $645,593 $409,145 $186,469 $90,853 $614,702 $— $— $2,338,102 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Home equity
Pass$21,729 $39,251 $56,216 $50,724 $30,039 $126,897 $765,079 $4,190 $1,094,125 
Default— — — — — — 1,289 141 1,430 
Total home equity$21,729 $39,251 $56,216 $50,724 $30,039 $126,897 $766,368 $4,331 $1,095,555 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Other consumer (2)
Pass$538 $320 $1,370 $912 $410 $2,154 $24,843 $— $30,547 
Default— — — — — 19 — 21 
Total other consumer$538 $320 $1,370 $912 $410 $2,173 $24,845 $— $30,568 
Current-period gross write-offs$1,836 $— $— $— $— $$15 $— $1,858 
Total$1,825,140 $2,677,047 $2,247,195 $1,690,252 $841,526 $3,214,966 $1,722,920 $5,189 $14,224,235 
Total current -period gross write-offs$1,836 $5,072 $22 $37 $— $41 $23,592 $— $30,600 
(1)Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan.
(2)Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances and the associated gross write-offs.
Foreclosed Residential Real Estate Property [Table Text Block]
The following table shows information regarding foreclosed residential real estate property at the dates indicated:
September 30, 2024December 31, 2023
(Dollars in thousands)
Foreclosed residential real estate property held by the creditor$110 $110 
Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure$1,686 $1,697 
Financing Receivable Credit Quality Indicators For Consumer And Residential Portfolio Table Text Block The following table shows the weighted average FICO scores and the weighted average combined LTV ratios at the dates indicated below:
September 30
2024
December 31
2023
Residential real estate portfolio
FICO score (re-scored)(1)755 754 
LTV (re-valued)(2)57.9 %59.8 %
Home equity portfolio
FICO score (re-scored)(1)769 770 
LTV (re-valued)(2)(3)43.4 %43.3 %
(1)The average FICO scores at September 30, 2024 are based upon rescores from September 2024 as available for previously originated loans, or origination score data for loans booked in September 2024.  The average FICO scores at December 31, 2023 were based upon rescores available from December 2023, as available for previously originated loans, or origination score data for loans booked in December 2023.
(2)The combined LTV ratios for September 30, 2024 are based upon updated automated valuations as of August 2024, when available, and/or the most current valuation data available.  The combined LTV ratios for December 31, 2023 were based upon updated automated valuations as of November 2023, when available, and/or the most current valuation data available as of such date.  The updated automated valuations provide new information on loans that may be available since the previous valuation was obtained.  If no new information is available, the valuation will default to the previously obtained data or most recent appraisal.
(3)For home equity loans and lines in a subordinate lien, the LTV data represents a combined LTV, taking into account the senior lien data for loans and lines.
Financing Receivable, Past Due [Table Text Block]
The following tables show the age analysis of past due financing receivables as of the dates indicated:
 September 30, 2024
 30-59 days60-89 days90 days or moreTotal Past Due Total
Financing
Receivables (2)
 Number
of Loans
Principal
Balance
Number
of Loans
Principal
Balance
Number
of Loans
Principal
Balance
Number
of Loans
Principal
Balance
Current
 (Dollars in thousands)
Loan Portfolio
Commercial and industrial$200 — $— $12,005 $12,205 $1,565,656 $1,577,861 
Commercial real estate1,839 2,056 20,657 11 24,552 8,137,468 8,162,020 
Commercial construction— — — — — — — — 742,042 742,042 
Small business11 397 71 153 24 621 269,397 270,018 
Residential real estate19 3,624 1,597 1,617 36 6,838 2,435,021 2,441,859 
Home equity13 1,392 217 10 1,937 27 3,546 1,126,889 1,130,435 
Other consumer (1)421 264 24 15 430 303 36,269 36,572 
Total472 $7,716 27 $3,965 37 $36,384 536 $48,065 $14,312,742 $14,360,807 
 December 31, 2023
 30-59 days60-89 days90 days or moreTotal Past Due Total
Financing
Receivables (2)
 Number
of Loans
Principal
Balance
Number
of Loans
Principal
Balance
Number
of Loans
Principal
Balance
Number
of Loans
Principal
Balance
Current
 (Dollars in thousands)
Loan Portfolio
Commercial and industrial$398 $17,538 $673 $18,609 $1,561,377 $1,579,986 
Commercial real estate14,674 8,419 7,279 13 30,372 8,011,136 8,041,508 
Commercial construction— — — — — — — — 849,586 849,586 
Small business400 20 243 13 663 251,293 251,956 
Residential real estate24 6,216 2,187 13 1,573 44 9,976 2,414,778 2,424,754 
Home equity23 1,640 1,238 10 529 37 3,407 1,094,219 1,097,626 
Other consumer (1)413 288 14 31 433 327 32,327 32,654 
Total480 $23,616 29 $29,433 40 $10,305 549 $63,354 $14,214,716 $14,278,070 
(1)Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances.
(2)The amount of net deferred costs on originated loans included in the ending balance was $6.2 million and $6.4 million at September 30, 2024 and December 31, 2023, respectively. Net unamortized discounts on acquired loans included in the ending balance were $8.3 million and $8.6 million at September 30, 2024 and December 31, 2023, respectively.
Financing Receivable, Nonaccrual [Table Text Block]
The following table shows information regarding nonaccrual loans as of the dates indicated:
Nonaccrual Balances
September 30, 2024December 31, 2023
With Allowance for Credit LossesWithout Allowance for Credit Losses (1)TotalWith Allowance for Credit LossesWithout Allowance for Credit Losses (1)Total
 (Dollars in thousands)
Commercial and industrial$375 $11,652 $12,027 $19,890 $298 $20,188 
Commercial real estate77,951 — 77,951 11,911 11,041 22,952 
Small business501 — 501 394 398 
Residential real estate9,744 — 9,744 7,634 — 7,634 
Home equity3,992 — 3,992 3,171 — 3,171 
Other consumer33 — 33 40 — 40 
Total nonaccrual loans $92,596 $11,652 $104,248 $43,040 $11,343 $54,383 
(1)Nonaccrual balances reported above without an allowance for credit losses are attributable to loans evaluated on an individual basis where it was determined that there was no risk of loss due to sufficient underlying collateral values, or reflect partially charged-off loans, with no risk of further loss.
Financing Receivable, Modified, Past Due The following tables depict the amortized cost and payment status of loans that were modified during the previous 12 months as of the periods indicated:
September 30, 2024
Payment Status (Amortized Cost Basis)
Current30-89 Days Past Due90+ Days Past Due
(Dollars in thousands)
Loan Type
Commercial and industrial$10,467 $— $— 
Commercial real estate43,731 — — 
Commercial construction3,488 — — 
Small business146 34 — 
Residential real estate297 — — 
Home equity133 — — 
Total$58,262 $34 $— 
September 30, 2023
Payment Status (Amortized Cost Basis)
Current30-89 Days Past Due90+ Days Past Due
(Dollars in thousands)
Loan Type
Commercial and industrial$7,409 $504 $— 
Commercial real estate16,252 660 — 
Small business140 — — 
Total$23,801 $1,164 $— 
Financing Receivable, Troubled Debt Restructuring [Table Text Block]
The following tables present the period end amortized cost basis of loans modified to borrowers experiencing financial difficulty during the periods indicated, disaggregated by class of financing receivable, type of modification granted and the financial effect of the modifications:

Three Months Ended September 30, 2024
Amortized Cost Basis% of Total Class of Financing ReceivableFinancial Effect
(Dollars in thousands)
Term Extension
Commercial and industrial$5,985 0.38 %
Added a weighted-average contractual term of 4 months to the life of the loans
Commercial real estate4,507 0.06 %
Added a weighted-average contractual term of 5 months to the life of the loans
Total$10,492 
Nine Months Ended September 30, 2024
Amortized Cost Basis% of Total Class of Financing ReceivableFinancial Effect
(Dollars in thousands)
Term Extension
Commercial and industrial$8,368 0.53%
Added a weighted-average contractual term of 7 months to the life of the loans
Commercial real estate37,380 0.46%
Added a weighted-average contractual term of 1 year to the life of the loans
Commercial construction3,488 0.47%
Added a weighted-average contractual term of 10 months to the life of the loans
Residential real estate297 0.01%
Extended the contractual term on one loan by 6.2 years
Total$49,533 
Interest Rate Reduction
Small business$42 0.02%
Reduced contractual rate on one loan from 11.00% to 8.20%
Home equity64 0.01%
Reduced contractual rate on one loan from 7.99% to 7.00%
Total$106 
Term Extension and Interest Rate Reduction
Commercial and industrial$97 0.01%
Extended the contractual term on one loan by 1.5 years and reduced the interest rate from 10.10% to 7.20%
Small business34 0.01%
Extended the contractual term on one loan by 2.5 years and reduced the interest rate from 10.25% to 6.50%
Home equity69 0.01%
Extended the contractual term on one loan by 8.1 years and reduced the interest rate from 10.00% to 6.80%
Total$200 
Other Than Insignificant Payment Delay
Commercial and industrial$1,809 0.11%Modification was made with minimal financial effect
Commercial real estate6,350 0.08%Modification was made with minimal financial effect
Total$8,159 
Total Outstanding Modified$57,998 
Three Months Ended September 30, 2023
Amortized Cost Basis% of Total Class of Financing ReceivableFinancial Effect
(Dollars in thousands)
Term Extension
Commercial and industrial$7,915 0.48 %
Added a weighted-average contractual term of 2 months to the life of the loans
Commercial real estate719 0.01 %
Added a weighted-average contractual term of 2.9 years to the life of the loans
Total$8,634 
Nine Months Ended September 30, 2023
Amortized Cost Basis% of Total Class of Financing ReceivableFinancial Effect
(Dollars in thousands)
Term Extension
Commercial and industrial$16,108 0.97 %
Added a weighted-average contractual term of 2 months to the life of the loans
Commercial real estate19,180 0.24 %
Added a weighted-average contractual term of 1.8 years to the life of the loans
Commercial construction2,369 0.25 %
Added a weighted-average contractual term of 2 months to the life of the loans
Small business105 0.04 %
Added a weighted-average contractual term of 4.3 years to the life of the loans
Total$37,762 
Other Than Insignificant Payment Delay
Commercial and industrial$2,805 0.17 %Modification was made with minimal financial effect
Commercial real estate7,013 0.09 %Modification was made with minimal financial effect
Total$9,818 
Term Extension and Interest Rate Reduction
Small business$44 0.02 %
Reduced the contractual interest rate on one loan from 10.00% to 6.50%; the financial effect of term extensions are included in term extension table shown above
Total$44 
Term Extension and Other Than Insignificant Payment Delay
Commercial and industrial$1,965 0.12 %The financial effects of term extensions are included in term extension table above, while the payment delay modifications had minimal financial effect
Commercial real estate6,857 0.09 %The financial effects of term extensions are included in term extension table above, while the payment delay modifications had minimal financial effect
Total$8,822 
Total Outstanding Modified$56,446