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Allowance for Credit Losses and Credit Quality Information (Tables)
 12 Months Ended
Dec. 31, 2020
Receivables [Abstract]  
Schedule of Allowance for Loan Losses and Loan Balances
The following table provides the activity of the Company's allowance for credit losses and loan and lease balances for the year ended December 31, 2020 under the CECL model in accordance with ASC 326 (as adopted on January 1, 2020). During 2020, the increase to the allowance for credit losses was primarily due to the Company's initial adoption of CECL, acute deterioration in the economic forecast used in its CECL models related to the impact of COVID-19 pandemic and enhanced loan reviews which resulted in risk migration that occurred during the year in several specific portfolios, mainly in the accommodation and food service industries.
 
(Dollars in thousands)
Commercial and Industrial(1)
Owner-
occupied
Commercial
Commercial
Mortgages
Construction
Residential(2)
Consumer(3)
Total
Year Ended December 31, 2020
Allowance for credit losses
Beginning balance, prior to adoption of ASC 326$22,849 $4,616 $7,452 $3,891 $1,381 $7,387 $47,576 
Impact of adopting ASC 326(4)
19,747 (1,472)1,662 681 7,522 7,715 35,855 
Charge-offs(10,388)(336)(104)— (229)(2,464)(13,521)
Recoveries4,255 142 158 36 230 893 5,714 
Provision (credit)114,412 6,665 21,903 7,582 (2,011)4,629 153,180 
Ending balance$150,875 $9,615 $31,071 $12,190 $6,893 $18,160 $228,804 
Period-end allowance allocated to:
Loans evaluated on an individual basis$1 $— $13 $— $— $— $14 
Loans evaluated on a collective basis150,874 9,615 31,058 12,190 6,893 18,160 228,790 
Ending balance$150,875 $9,615 $31,071 $12,190 $6,893 $18,160 $228,804 
Period-end loan balances:
Loans evaluated on an individual basis
$14,048 $6,496 $20,309 $79 $5,921 $2,371 $49,224 
Loans evaluated on a collective basis2,935,255 1,326,231 2,065,753 716,196 758,472 1,163,546 8,965,453 
Ending balance$2,949,303 $1,332,727 $2,086,062 $716,275 $764,393 $1,165,917 $9,014,677 
(1)Includes commercial small business leases and PPP loans.
(2)Period-end loan balance excludes reverse mortgages at fair value of $10.1 million.
(3)Includes home equity lines of credit, installment loans, unsecured lines of credit and education loans.
(4)The impact of adopting ASC 326 includes $0.1 million for the initial allowance on loans purchased with credit deterioration.
The following tables provide the activity of the allowance for loan and lease losses and loan and lease balances for the years ended December 31, 2019 and 2018 under the incurred loss model:
(Dollars in thousands)
Commercial and Industrial(1)
Owner-
occupied
Commercial
Commercial
Mortgages
Construction
Residential(2)
ConsumerTotal
Year Ended December 31, 2019
Allowance for loan and lease losses
Beginning balance$14,211 $5,057 $6,806 $3,712 $1,428 $8,325 $39,539 
Charge-offs(17,258)(354)(159)(42)(322)(4,138)(22,273)
Recoveries1,621 200 1,546 4 (84)1,463 4,750 
Provision (credit)23,977 (472)(830)207 126 1,465 24,473 
Provision (credit) for acquired loans298 185 89 10 233 272 1,087 
Ending balance$22,849 $4,616 $7,452 $3,891 $1,381 $7,387 $47,576 
Period-end allowance allocated to:
Individually evaluated for impairment$1,179 $23 $— $— $463 $176 $1,841 
Collectively evaluated for impairment21,664 4,383 7,387 3,867 824 7,210 45,335 
Acquired loans evaluated for impairment6 210 65 24 94 1 400 
Ending balance$22,849 $4,616 $7,452 $3,891 $1,381 $7,387 $47,576 
Period-end loan balances:
Individually evaluated for impairment(3)
$11,158 $4,060 $1,753 $— $12,151 $7,467 $36,589 
Collectively evaluated for impairment1,619,549 971,694 1,105,174 437,999 145,582 899,724 5,179,722 
Acquired nonimpaired loans603,157 313,955 1,107,379 142,592 834,820 219,413 3,221,316 
Acquired impaired loans1,564 6,757 8,670 491 7,326 2,127 26,935 
Ending balance(4)
$2,235,428 $1,296,466 $2,222,976 $581,082 $999,879 $1,128,731 $8,464,562 
 
(Dollars in thousands)Commercial and Industrial
Owner-
occupied
Commercial
Commercial
Mortgages
Construction
Residential(2)
ConsumerTotal
Year Ended December 31, 2018
Allowance for loan and lease losses
Beginning balance$16,732 $5,422 $5,891 $2,861 $1,798 $7,895 $40,599 
Charge-offs(12,130)(417)(255)(1,475)(91)(2,615)(16,983)
Recoveries1,381 34 255 3 154 926 2,753 
Provision (credit)8,328 (38)924 2,341 (404)2,126 13,277 
Provision (credit) for acquired loans(100)56 (9)(18)(29)(7)(107)
Ending balance$14,211 $5,057 $6,806 $3,712 $1,428 $8,325 $39,539 
Period-end allowance allocated to:
Individually evaluated for impairment$876 $— $— $444 $543 $168 $2,031 
Collectively evaluated for impairment13,334 4,965 6,727 3,254 847 8,155 37,282 
Acquired loans evaluated for impairment1 92 79 14 38 2 226 
Ending balance$14,211 $5,057 $6,806 $3,712 $1,428 $8,325 $39,539 
Period-end loan balances:
Individually evaluated for impairment(3)
$14,837 $4,406 $4,083 $2,781 $11,017 $7,883 $45,007 
Collectively evaluated for impairment1,366,151 938,934 1,005,504 310,511 132,064 651,160 4,404,324 
Acquired nonimpaired loans89,970 112,386 145,648 2,525 57,708 21,745 429,982 
Acquired impaired loans1,531 4,248 7,504 749 761 151 14,944 
Ending balance(4)
$1,472,489 $1,059,974 $1,162,739 $316,566 $201,550 $680,939 $4,894,257 
(1)Includes commercial small business leases.
(2)Period-end loan balance excludes reverse mortgages at fair value of $16.6 million as of December 31, 2019 and $16.5 million as of December 31, 2018.
(3)The difference between this amount and nonaccruing loans represents accruing troubled debt restructured loans which are considered to be impaired loans of $14.3 million as of December 31, 2019 and $15.0 million as of December 31, 2018.
(4)Ending loan balances do not include net deferred fees.
Summary of Nonaccrual and Past Due Loans
The following table shows nonaccrual and past due loans presented at amortized cost at the date indicated under the CECL model: 
December 31, 2020
(Dollars in thousands)30–89 Days
Past Due and
Still Accruing
Greater Than
90 Days
Past Due and
Still Accruing
Total Past
Due
And Still
Accruing
Accruing
Current
Balances
Nonaccrual
Loans(1)
Total
Loans
Commercial and industrial(2)
$7,313 $3,652 $10,965 $2,924,522 $13,816 $2,949,303 
Owner-occupied commercial3,120 892 4,012 1,323,355 5,360 1,332,727 
Commercial mortgages5,944 1,090 7,034 2,061,853 17,175 2,086,062 
Construction371 — 371 715,904 — 716,275 
Residential(3)
3,049 25 3,074 758,072 3,247 764,393 
Consumer(4)
8,355 11,035 19,390 1,144,217 2,310 1,165,917 
Total(4)
$28,152 $16,694 $44,846 $8,927,923 $41,908 $9,014,677 
% of Total Loans0.31 %0.19 %0.50 %99.04 %0.46 %100.00 %
(1)Nonaccrual loans with an allowance totaled $13 thousand.
(2)Includes commercial small business leases and PPP loans.
(3)Residential accruing current balances excludes reverse mortgages at fair value of $10.1 million.
(4)Includes $18.2 million of delinquent, but still accruing, U.S. government-guaranteed student loans that carry little risk of credit loss.

The following table shows nonaccrual and past due loans presented at unpaid principal balance at the date indicated under the incurred loss model:

December 31, 2019
(Dollars in thousands)30–89 Days
Past Due and
Still Accruing
Greater Than
90 Days
Past Due and
Still Accruing
Total Past
Due
And Still
Accruing
Accruing
Current
Balances
Acquired
Impaired
Loans
Nonaccrual
Loans
Total Loans
Commercial and industrial(1)
$6,289 $2,038 $8,327 $2,214,506 $1,564 $11,031 $2,235,428 
Owner-occupied commercial1,498 831 2,329 1,283,320 6,757 4,060 1,296,466 
Commercial mortgages4,999 99 5,098 2,207,582 8,670 1,626 2,222,976 
Construction— — — 580,591 491 — 581,082 
Residential(2)
6,733 437 7,170 980,893 7,326 4,490 999,879 
Consumer(3)
13,164 12,745 25,909 1,098,980 2,127 1,715 1,128,731 
Total(4)
$32,683 $16,150 $48,833 $8,365,872 $26,935 $22,922 $8,464,562 
% of Total Loans0.39 %0.19 %0.58 %98.83 %0.32 %0.27 %100.00 %
(1)Includes commercial small business leases.
(2)Residential accruing current balances excludes reverse mortgages at fair value of $16.6 million.
(3)Includes $22.3 million of delinquent, but still accruing, U.S. government-guaranteed student loans that carry little risk of credit loss.
(4)Balances in table above includes $3.2 billion in acquired non-impaired loans.
Schedule Of Collateral Dependent Loans
The following table presents the amortized cost basis of nonaccruing collateral-dependent loans by class at December 31, 2020 under the CECL model:
December 31, 2020
(Dollars in thousands)PropertyEquipment and other
Commercial and industrial(1)
$10,646 $3,170 
Owner-occupied commercial5,360 — 
Commercial mortgages17,175 — 
Construction— — 
Residential(2)
3,247 — 
Consumer(3)
2,294 16 
Total$38,722 $3,186 
(1)Includes commercial small business leases.
(2)Excludes reverse mortgages at fair value.
(3)Includes home equity lines of credit, installment loans, unsecured lines of credit and education loans.
Analysis of Impaired Loans
The following table provides an analysis of the Company's impaired loans at December 31, 2019 under the incurred loss model:
December 31, 2019
(Dollars in thousands)
Ending
Loan
Balances
Loans
with No
Related
Reserve (1)
Loans with
Related
Reserve (2)
Related
Reserve
Contractual
Principal
Balances (2)
Average
Loan
Balances
Commercial and industrial$11,900 $9,979 $1,921 $1,185 $14,653 $17,033 
Owner-occupied commercial5,596 3,919 1,677 233 6,083 7,869 
Commercial mortgages4,888 1,753 3,135 65 5,215 4,607 
Construction435 — 435 24 488 1,686 
Residential14,119 8,858 5,261 557 16,721 12,031 
Consumer7,584 5,876 1,708 178 8,444 7,729 
Total$44,522 $30,385 $14,137 $2,242 $51,604 $50,955 
(1)Reflects loan balances at or written down to their remaining book balance.
(2)The above includes acquired impaired loans totaling $7.9 million in the ending loan balance and $9.0 million in the contractual principal balance.
Schedule of Commercial Credit Exposure
Term Loans Amortized Cost Basis by Origination Year
20202019201820172016
Prior
Revolving loans amortized cost basisRevolving loans converted to termTotal
(Dollars in thousands)
Commercial and industrial(1):
Risk Rating
Pass(2)
$1,250,528 $448,704 $296,594 $157,359 $97,036 $125,361 $6,182 $136,110 $2,517,874 
Special mention3,040 26,470 28,636 8,482 2,577 16,993 — 34,403 120,601 
Substandard or Lower82,868 60,227 57,880 50,446 15,151 35,150 63 9,043 310,828 
$1,336,436 $535,401 $383,110 $216,287 $114,764 $177,504 $6,245 $179,556 $2,949,303 
Owner-occupied commercial:
Risk Rating
Pass$220,165 $225,766 $90,515 $135,903 $123,897 $271,086 $— $123,194 $1,190,526 
Special mention1,525 5,885 1,838 17,578 4,125 1,997 — 14,467 47,415 
Substandard or Lower3,703 13,426 15,272 19,883 11,581 19,331 — 11,590 94,786 
$225,393 $245,077 $107,625 $173,364 $139,603 $292,414 $— $149,251 $1,332,727 
Commercial mortgages:
Risk Rating
Pass$379,592 $283,004 $240,924 $257,809 $254,780 $375,473 $— $148,210 $1,939,792 
Special mention8,324 1,774 21,762 21,269 1,274 6,507 — 1,870 62,780 
Substandard or Lower26,343 25,402 2,253 1,950 3,242 24,300 — — 83,490 
$414,259 $310,180 $264,939 $281,028 $259,296 $406,280 $— $150,080 $2,086,062 
Construction:
Risk Rating
Pass$189,257 $214,956 $208,981 $11,414 $7,414 $3,645 $— $66,018 $701,685 
Special mention— — — 3,515 — — — — 3,515 
Substandard or Lower— 8,648 — — — 79 — 2,348 11,075 
$189,257 $223,604 $208,981 $14,929 $7,414 $3,724 $— $68,366 $716,275 
Residential(3):
Risk Rating
Performing$42,475 $26,309 $71,410 $85,277 $149,643 $383,358 $— $— $758,472 
Nonperforming(4)
113 — — — 283 5,525 — — 5,921 
$42,588 $26,309 $71,410 $85,277 $149,926 $388,883 $— $— $764,393 
Consumer(5):
Risk Rating
Performing$235,948 $134,064 $251,087 $63,713 $44,700 $53,717 $371,842 $8,287 $1,163,358 
Nonperforming(6)
— — 636 232 — — 1,396 295 2,559 
$235,948 $134,064 $251,723 $63,945 $44,700 $53,717 $373,238 $8,582 $1,165,917 
(1)Includes commercial small business leases.
(2)Includes $751.2 million of PPP loans
(3)Excludes reverse mortgages at fair value.
(4)Includes troubled debt restructured mortgages performing in accordance with the loans' modified terms and are accruing interest.
(5)Includes home equity lines of credit, installment loans, unsecured lines of credit and education loans.
(6)Includes troubled debt restructured home equity installment loans performing in accordance with the loans' modified terms and are accruing interest.
The following tables provide an analysis of loans by portfolio segment based on the credit quality indicators used to determine the allowance for loan and lease loss, as of December 31, 2019 under the incurred loss model.

Commercial Credit Exposure

December 31, 2019
 
Commercial and Industrial(1)
Owner-occupied
Commercial		Commercial
Mortgages		Construction
Total Commercial (2)
(Dollars in thousands)Amount%
Risk Rating:
Special mention$12,287 $— $40,478 $— $52,765 
Substandard:
Accrual78,809 32,679 23,017 — 134,505 
Nonaccrual9,852 4,037 1,626 — 15,515 
Doubtful1,179 23 — — 1,202 
Total Special Mention and Substandard102,127 36,739 65,121 — 203,987 3 %
Acquired impaired1,564 6,757 8,670 491 17,482 — %
Pass2,131,737 1,252,970 2,149,185 580,591 6,114,483 97 %
Total$2,235,428 $1,296,466 $2,222,976 $581,082 $6,335,952 100 %
(1)Includes commercial small business leases.
(2)Includes $2.2 billion of acquired non-impaired loans at December 31, 2019.
Schedule of Consumer Credit Exposure
 
Residential (2)
Consumer
Total Retail(3)
 December 31, 2019December 31, 2019December 31, 2019
(Dollars in thousands)AmountPercent
Nonperforming (1)
$12,858 $7,374 $20,232 1 %
Acquired impaired loans7,326 2,127 9,453 — %
Performing979,695 1,119,230 2,098,925 99 %
Total$999,879 $1,128,731 $2,128,610 100 %
(1)Includes $14.0 million as of December 31, 2019 of troubled debt restructured mortgages and home equity installment loans that are performing in accordance with the loans modified terms and are accruing interest.
(2)Residential performing loans excludes $16.6 million of reverse mortgages at fair value as of December 31, 2019.
(3)Total includes acquired non-impaired loans of $1.1 billion at December 31, 2019.
Summary of Balance of TDRs
The following table presents the balance of TDRs as of the indicated dates:
 
(Dollars in thousands)December 31, 2020December 31, 2019
Performing TDRs$15,539 $14,281 
Nonperforming TDRs4,601 5,896 
Total TDRs$20,140 $20,177 
Summary of Loan Modifications By Type
The following tables present information regarding the types of loan modifications made and the balances of loans modified as TDRs during the years ended December 31, 2020 and 2019:

December 31, 2020December 31, 2019
Contractual
payment
reduction
Maturity
date
extension
Discharged
in
bankruptcy
Other (1)
TotalContractual
payment
reduction		Maturity
date
extension		Discharged
in
bankruptcy
Other (1)
Total
Commercial1 — — — 1 — 1 — 2 3 
Owner-occupied commercial3 — — — 3 — — — 2 2 
Commercial mortgages— 1 — — 1 3 — — 1 4 
Construction— — — — — — — — — — 
Residential— — 6 4 10 4 — 3 3 10 
Consumer— — 12 7 19 5 3 8 5 21 
4 1 18 11 34 12 4 11 13 40 
(1)Other includes interest rate reduction, forbearance, and interest only payments.
Schedule of Loans Identified as Troubled Debt Restructurings During Periods Indicated
 Year Ended December 31,
(Dollars in thousands)20202019
Pre
Modification
Post
Modification
Pre
Modification
Post
Modification
Commercial$1 $1 $1,134 $1,134 
Owner-occupied commercial1,192 1,192 1,367 1,367 
Commercial mortgages93 93 1,136 1,136 
Construction— — — — 
Residential1,396 1,396 1,231 1,231 
Consumer1,714 1,714 2,046 2,046 
$4,396 $4,396 $6,914 $6,914