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LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY (Tables)
 12 Months Ended
Dec. 31, 2023
Receivables [Abstract]  
Schedule of Internal Risk-Rating Categories for the Company's Commercial Portfolio
 December 31, 2023
20232022202120202019PriorRevolving LoansRevolving converted to TermTotal (1)
 (Dollars in thousands)
Commercial and
industrial
Pass $329,892 $165,003 $86,982 $64,483 $45,867 $110,135 $692,918 $90 $1,495,370 
Special Mention4,188 668 528 9,358 22 121 28,218 — 43,103 
Substandard1,867 1,329 902 110 917 3,660 32,728 — 41,513 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total commercial and industrial$335,947 $167,000 $88,412 $73,951 $46,806 $113,916 $753,864 $90 $1,579,986 
Current-period gross write-offs$— $91 $— $— $— $34 $23,439 $— $23,564 
Commercial real estate
Pass $1,116,730 $1,197,017 $1,300,140 $1,276,967 $592,058 $2,078,644 $79,360 $3,359 $7,644,275 
Special Mention62,337 37,510 51,555 13,269 1,859 118,526 — — 285,056 
Substandard37,302 18,321 22,844 4,556 7,881 12,923 — — 103,827 
Doubtful— — — — 8,350 — — — 8,350 
Loss— — — — — — — — — 
Total commercial real estate$1,216,369 $1,252,848 $1,374,539 $1,294,792 $610,148 $2,210,093 $79,360 $3,359 $8,041,508 
Current-period gross write-offs$— $5,072 $— $— $2,783 $— $— $— $7,855 
Commercial construction
Pass $180,045 $381,352 $127,431 $44,953 $23,823 $1,561 $17,503 $— $776,668 
Special Mention12,106 — 5,292 — — — — — 17,398 
Substandard10,955 26,146 18,419 — — — — — 55,520 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total commercial construction$203,106 $407,498 $151,142 $44,953 $23,823 $1,561 $17,503 $— $849,586 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Small business
Pass $50,734 $51,157 $39,435 $25,643 $12,944 $22,412 $46,130 $— $248,455 
Special Mention— — — 154 — 184 314 — 652 
Substandard530 282 90 475 — 669 803 — 2,849 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total small business$51,264 $51,439 $39,525 $26,272 $12,944 $23,265 $47,247 $— $251,956 
Current-period gross write-offs$— $— $54 $40 $— $— $390 $— $484 
Residential real estate
Pass$505,517 $638,223 $405,386 $184,833 $88,473 $598,562 $— $— $2,420,994 
Default— — — — 854 2,906 — — 3,760 
Total residential real estate$505,517 $638,223 $405,386 $184,833 $89,327 $601,468 $— $— $2,424,754 
Current-period gross write-offs$— $— $— $— $— $— $— $— $— 
Home equity
Pass$28,903 $38,401 $54,944 $49,803 $29,103 $121,286 $770,074 $4,583 $1,097,097 
Default— — — — — 63 324 142 529 
Total home equity$28,903 $38,401 $54,944 $49,803 $29,103 $121,349 $770,398 $4,725 $1,097,626 
Current-period gross write-offs$— $— $— $— $— $— $47 $— $47 
Other consumer (2)
Pass$639 $263 $1,178 $706 $256 $1,835 $27,769 $— $32,646 
Default— — — — 1 — 7 — 8 
Total other consumer$639 $263 $1,178 $706 $257 $1,835 $27,776 $— $32,654 
Current-period gross write-offs$2,766 $— $— $— $— $49 $17 $— $2,832 
Total$2,341,745 $2,555,672 $2,115,126 $1,675,310 $812,408 $3,073,487 $1,696,148 $8,174 $14,278,070 
Total current-period gross write-offs$2,766 $5,163 $54 $40 $2,783 $83 $23,893 $— $34,782 

December 31, 2022
20222021202020192018PriorRevolving LoansRevolving converted to TermTotal (1)
(Dollars in thousands)
Commercial and
industrial
Pass$350,036 $137,832 $113,020 $59,936 $79,391 $18,197 $815,128 $3,165 $1,576,705 
Special Mention4,836 925 1,023 1,744 467 623 17,122 — 26,740 
Substandard2,389 1,681 180 618 — — 3,623 — 8,491 
Doubtful— — — — — — 23,167 — 23,167 
Loss— — — — — — — — — 
Total commercial and industrial$357,261 $140,438 $114,223 $62,298 $79,858 $18,820 $859,040 $3,165 $1,635,103 
Commercial real estate
Pass$1,277,333 $1,487,333 $1,213,984 $723,794 $696,166 $1,833,099 $44,477 $669 $7,276,855 
Special Mention42,005 65,603 39,740 14,167 58,190 183,468 — — 403,173 
Substandard42,629 3,843 4,774 4,066 3,553 21,162 — — 80,027 
Doubtful— — — — — 175 — — 175 
Loss— — — — — — — — — 
Total commercial real estate$1,361,967 $1,556,779 $1,258,498 $742,027 $757,909 $2,037,904 $44,477 $669 $7,760,230 
Commercial construction
Pass$504,932 $327,194 $169,838 $56,693 $3,135 $1,588 $23,122 $951 $1,087,453 
Special Mention33,000 1,775 3,347 — — — — — 38,122 
Substandard18,980 9,858 — — — — — — 28,838 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total commercial construction$556,912 $338,827 $173,185 $56,693 $3,135 $1,588 $23,122 $951 $1,154,413 
Small business
Pass$54,876 $44,811 $31,051 $16,588 $9,882 $18,891 $39,434 $— $215,533 
Special Mention— 152 373 366 191 117 686 — 1,885 
Substandard139 98 417 — — 401 629 — 1,684 
Doubtful— — — — — — — — — 
Loss— — — — — — — — — 
Total small business$55,015 $45,061 $31,841 $16,954 $10,073 $19,409 $40,749 $— $219,102 
Residential real estate
Pass$665,407 $419,665 $193,886 $94,065 $94,425 $565,246 $— $— $2,032,694 
Default— — 729 158 — 1,943 — — 2,830 
Total residential real estate$665,407 $419,665 $194,615 $94,223 $94,425 $567,189 $— $— $2,035,524 
Home equity
Pass$43,917 $60,103 $54,802 $32,014 $26,414 $118,367 $748,294 $3,874 $1,087,785 
Default— — — 122 — 83 760 — 965 
Total home equity$43,917 $60,103 $54,802 $32,136 $26,414 $118,450 $749,054 $3,874 $1,088,750 
Other consumer (2)
Pass$677 $2,013 $1,619 $1,022 $231 $3,023 $26,939 $— $35,524 
Default— — — 18 — 11 — — 29 
Total other consumer$677 $2,013 $1,619 $1,040 $231 $3,034 $26,939 $— $35,553 
Total$3,041,156 $2,562,886 $1,828,783 $1,005,371 $972,045 $2,766,394 $1,743,381 $8,659 $13,928,675 
(1)Loans origination dates in the tables above reflect the original date, or the date of a material modification of a previously originated loan, for both organic originations and acquired loans.
(2)Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances and the associated gross write-offs.
Financing Receivable Credit Quality Indicators for Consumer and Residential Portfolio's
December 31
2023		December 31
2022
Residential portfolio
FICO score (re-scored)(1)754 753 
LTV (re-valued)(2)59.8 %57.0 %
Home equity portfolio
FICO score (re-scored)(1)770 771 
LTV (re-valued)(2)(3)43.3 %41.3 %
(1)The average FICO scores at December 31, 2023 are based upon rescores from December 2023, as available for previously originated loans, or origination score data for loans booked in December 2023.  The average FICO scores at December 31, 2022 were based upon rescores from December 2022, as available for previously originated loans, or origination score data for loans booked in December 2022.
(2)The combined LTV ratios for December 31, 2023 are based upon updated automated valuations as of November 2023, when available, and/or the most current valuation data available.  The combined LTV ratios for December 31, 2022 were based upon updated automated valuations as of November 2022, 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, Nonaccrual
The following table shows information regarding nonaccrual loans at the dates indicated:
Nonaccrual Balances
December 31, 2023December 31, 2022
With Allowance for Credit LossesWithout Allowance for Credit Losses (2)Total With Allowance for Credit LossesWithout Allowance for Credit Losses (2)Total (1)
 (Dollars in thousands)
Commercial and industrial$19,890 $298 $20,188 $26,395 $298 $26,693 
Commercial real estate11,911 11,041 22,952 12,961 2,769 15,730 
Small business394 4 398 99 5 104 
Residential real estate7,634 — 7,634 8,479 — 8,479 
Home equity3,171 — 3,171 3,400 — 3,400 
Other consumer40 — 40 475 — 475 
Total nonaccrual loans$43,040 $11,343 $54,383 $51,809 $3,072 $54,881 
(1)Nonaccrual balances at December 31, 2022 included $11.5 million of nonaccruing TDRs.
(2)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.
Schedule of the Age Analysis of Past Due Financing Receivables
The following tables show the age analysis of past due financing receivables at the dates indicated:
 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)
Commercial and industrial6 $398 1 $17,538 2 $673 9 $18,609 $1,561,377 $1,579,986 
Commercial real estate8 14,674 2 8,419 3 7,279 13 30,372 8,011,136 8,041,508 
Commercial construction— — — — — — — — 849,586 849,586 
Small business6 400 1 20 6 243 13 663 251,293 251,956 
Residential real estate24 6,216 7 2,187 13 1,573 44 9,976 2,414,778 2,424,754 
Home equity23 1,640 4 1,238 10 529 37 3,407 1,094,219 1,097,626 
Other consumer (1)413 288 14 31 6 8 433 327 32,327 32,654 
Total480 $23,616 29 $29,433 40 $10,305 549 $63,354 $14,214,716 $14,278,070 
 December 31, 2022
 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)
Commercial and industrial3 $49 1 $175 3 $23,726 7 $23,950 $1,611,153 $1,635,103 
Commercial real estate7 2,052 5 4,971 3 2,977 15 10,000 7,750,230 7,760,230 
Commercial construction— — — — — — — — 1,154,413 1,154,413 
Small business12 111 3 25 3 5 18 141 218,961 219,102 
Residential real estate8 1,654 8 1,105 16 1,725 32 4,484 2,031,040 2,035,524 
Home equity19 1,647 3 201 17 965 39 2,813 1,085,937 1,088,750 
Other consumer (1)432 421 15 83 4 28 451 532 35,021 35,553 
Total481 $5,934 35 $6,560 46 $29,426 562 $41,920 $13,886,755 $13,928,675 
(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 $6.4 million at December 31, 2023, compared to net deferred fees of $5.0 million at December 31, 2022. Net unamortized discounts on acquired loans included in the ending balance was $8.6 million and $10.4 million at December 31, 2023 and 2022, respectively.
Schedule of Troubled Debt Restructuring and Other Pertinent Information :
Year Ended December 31, 2023
Term Extension
Amortized Cost Basis% of Total Class of Financing Receivable
(Dollars in thousands)
Commercial and industrial$11,010 0.70%
Commercial real estate17,530 0.22%
Small business208 0.08%
Total $28,748 
Combination - Interest Rate Reduction and Term Extension
Amortized Cost Basis% of Total Class of Financing Receivable
(Dollars in thousands)
Commercial and industrial$85 0.01%
Small business$38 0.02%
Total $123 
Combination - Term Extension and Other-Than-Insignificant Payment Delay
Amortized Cost Basis% of Total Class of Financing Receivable
(Dollars in thousands)
Commercial and industrial$1,865 0.12%
Commercial real estate6,505 0.08%
Total $8,370 
The following table describes the financial effect of the modifications made to borrowers experiencing financial difficulty for the year ended December 31, 2023:

Term Extension
Financial Effect
Commercial and industrial
Added a weighted-average contractual term of 2 months to the life of the loans
Commercial real estate
Added a weighted-average contractual term of 1.9 years to the life of the loans
Small business
Added a weighted-average contractual term of 4.7 years to the life of the loans
Interest Rate Reduction
Financial Effect
Commercial and industrial
Reduced contractual rate on one loan from 10.00% to 7.00%
Small business
Reduced contractual rate on one loan from 10.00% to 6.50%
Schedule of Post-Modification Balance of Troubled Debt Restructuring by Type of Modification
Financing Receivable, Modified, Past Due The following table depicts the amortized cost and payment status of loans that have been modified in the last 12 months as of December 31, 2023:
Current (1)30-89 Days Past Due90+ Days Past DueTotal
(Dollars in thousands)
Commercial and industrial$12,585 $— $375 $12,960 
Commercial real estate23,899 — 136 24,035 
Small business246 — — 246 
Total$36,730 $— $511 $37,241 
(1)Current category is inclusive of $8.4 million in nonaccrual loans which have yet to reach the six consecutive months of performance required to return to accruing status in accordance with the Company's accounting policy for nonaccrual loans
Foreclosed Residential Real Estate Property
The following table shows information regarding foreclosed residential real estate property at the dates indicated:
December 31, 2023December 31, 2022
(Dollars in thousands)
Foreclosed residential real estate property held by the creditor$110 $— 
Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure$1,697 $1,615 
Schedule of Debtor Troubled Debt Restructuring, Subsequent Periods [Table Text Block]
 (Dollars in thousands)
TDRs on accrual status$11,278 
TDRs on nonaccrual11,520 
Total TDRs$22,798 
Additional commitments to lend to a borrower who has been a party to a TDR$64 
The following table shows the troubled debt restructurings which occurred for the periods indicated and the change in the recorded investment subsequent to the modifications occurring:

Year Ended December 31, 2022
Number of ContractsPre-Modification Outstanding Recorded InvestmentPost-Modification Outstanding Recorded Investment
(Dollars in thousands)
Commercial and industrial4 $3,466 $3,465 
Commercial real estate1 7,850 7,850 
Total (1)5 $11,316 $11,315 
Year Ended December 31, 2021
Number of ContractsPre-Modification Outstanding Recorded InvestmentPost-Modification Outstanding Recorded Investment
(Dollars in thousands)
Commercial and industrial1$14,148 $14,148 
Commercial real estate53,964 3,964 
Small business2189 189 
Total (1)8$18,301 $18,301 
(1)The pre-modification and post-modification balances represent the legal principal balance of the loan. Activity presented in the tables above includes $14.3 million of modifications on existing TDRs during the year ended December 31, 2021.

The following table shows the Company's post-modification balance of TDR's listed by type of modification for the periods indicated:
Year Ended December 31
20222021
(Dollars in thousands)
Extended maturity$11,315 $4,153 
Combination rate and maturity— 14,148 
Total$11,315 $18,301 
Financing Receivable, Modified, Subsequent Default The table below shows the amortized cost basis of financing receivables modified during the twelve months ended December 31, 2023 that subsequently defaulted:
Term ExtensionCombination - Term Extension and Other Than Insignificant Payment DelayTotal
(Dollars in thousands)
Commercial and industrial$374 $— $374 
Commercial real estate136 6,505 6,641 
Total$510 $6,505 $7,015