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Loans and Allowance for Credit Losses (Tables)
 12 Months Ended
Dec. 31, 2021
Receivables [Abstract]  
Summary of Loans and Leases, Net of Unearned Income
Loans and leases, net of unearned income are summarized as follows as of December 31:
20212020
(in thousands)
Real estate - commercial mortgage$7,279,080 $7,105,092 
Commercial and industrial (1)
4,208,327 5,670,828 
Real-estate - residential mortgage3,846,750 3,141,915 
Real-estate - home equity1,118,248 1,202,913 
Real-estate - construction1,139,779 1,047,218 
Consumer464,657 466,772 
Equipment lease financing and other283,557 284,377 
Overdrafts1,988 4,806 
Gross loans18,342,386 18,923,921 
Unearned income(17,036)(23,101)
Net Loans$18,325,350 $18,900,820 

(1) Includes PPP loans totaling $0.3 billion and $1.6 billion as of December 31, 2021 and 2020 respectively.
Schedule of Allowance for Credit Losses
The following table presents the components of the ACL:
20212020
(in thousands)
ACL - loans $249,001 $277,567 
ACL - OBS credit exposure14,533 14,373 
        Total ACL$263,534 $291,940 
Activity in the Allowance for Credit Losses
The following table presents the activity in the ACL for the years ended December 31:
202120202019
(in thousands)
Balance at beginning of period$291,940 $166,209 $169,410 
Impact of adopting CECL on January 1, 2020 (1)
— 58,348 — 
Loans charged off(30,952)(30,557)(53,189)
Recoveries of loans previously charged off17,146 21,020 17,163 
Net loans charged off(13,806)(9,537)(36,026)
Provision for credit losses (2)
(14,600)76,920 32,825 
Balance at the end of the period (3)
$263,534 $291,940 $166,209 
(1) Includes $12.6 million of reserves for OBS credit exposures as of January 1, 2020.
(2) Includes $0.2 million, $(0.8) million and $(6.3) million related to OBS credit exposures for the years ended December 31, 2021, 2020 and 2019, respectively.
(3) Includes $14.5 million, $14.4 million and $2.6 million of reserves for OBS credit exposures as of December 31, 2021, 2020 and 2019, respectively.

The following tables present the activity in the allowance for loan losses by portfolio segment for the years ended December 31, 2021 and 2020, by portfolio segment:
Real Estate -
Commercial
Mortgage		Commercial and IndustrialReal Estate -
Home
Equity		Real Estate -
Residential
Mortgage		Real Estate -
Construction		ConsumerEquipment Finance Leasing and OtherTotal
 (in thousands)
Balance at December 31, 2019$45,610 $68,602 $17,744 $19,771 $4,443 $3,762 $3,690 $163,622 
Impact of adopting CECL on January 1, 202029,361 (18,576)(65)21,235 4,015 5,969 3,784 45,723 
Loans charged off(4,225)(18,915)(1,193)(620)(17)(3,400)(2,187)(30,557)
Recoveries of loans previously charged off1,027 11,396 504 491 5,122 1,875 605 21,020 
Net loans recovered (charged off)(3,198)(7,519)(689)(129)5,105 (1,525)(1,582)(9,537)
Provision for loan losses (1)
31,652 32,264 (2,758)11,118 2,045 2,699 739 77,759 
Balance at December 31, 2020103,425 74,771 14,232 51,995 15,608 10,905 6,631 277,567 
Loans charged off(8,726)(15,337)(676)(1,290)(39)(2,633)(2,251)(30,952)
Recoveries of loans previously charged off2,474 9,587 248 375 1,412 2,097 953 17,146 
Net loans recovered (charged off)(6,252)(5,750)(428)(915)1,373 (536)(1,298)(13,806)
Provision for loan losses(1)
(9,203)(1,965)(2,595)3,156 (4,040)(1,829)1,716 (14,760)
Balance at December 31, 2021$87,970 $67,056 $11,209 $54,236 $12,941 $8,540 $7,049 $249,001 
(1) Provision included in the table only includes the portion related to Net Loans
Total Non-Accrual Loans by Class Segment The following table presents total non-accrual loans, by class segment:
20212020
With a Related AllowanceWithout a Related AllowanceTotalWith a Related AllowanceWithout a Related AllowanceTotal
(in thousands)
Real estate - commercial mortgage$20,564 $32,251 $52,815 $19,909 $31,561 $51,470 
Commercial and industrial12,571 17,570 30,141 13,937 18,056 31,993 
Real estate - residential mortgage35,269 — 35,269 24,590 1,517 26,107 
Real estate - home equity8,671 — 8,671 9,398 190 9,588 
Real estate - construction173 728 901 437 958 1,395 
Consumer229 — 229 332 — 332 
Equipment lease financing and other6,247 9,393 15,640 — 16,313 16,313 
Total$83,724 $59,942 $143,666 $68,603 $68,595 $137,198 
Financing Receivable Credit Quality Indicators
The following table summarizes designated internal risk categories by portfolio segment and loan class, by origination year, in the current period:
December 31, 2021
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(dollars in thousands)AmortizedAmortized
20212020201920182017PriorCost BasisCost BasisTotal
 Real estate - construction (1)
Pass$190,030 $315,811 $113,245 $83,886 $17,545 $117,157 $46,409 $— $884,083 
Special Mention5,843 775 9,984 20,200 15,724 6,315 — — 58,841 
Substandard or Lower— — — — 1,912 4,185 227 — 6,324 
   Total real estate - construction195,873 316,586 123,229 104,086 35,181 127,657 46,636 — 949,248 
Real estate - construction (1)
Current period gross charge-offs— — (39)— — — — — (39)
Current period recoveries— — 39 — — 1,373 — — 1,412 
Total net (charge-offs) recoveries— — — — — 1,373 — — 1,373 
Commercial and industrial (2)
Pass855,924 520,802 396,575 232,805 147,675 581,762 1,177,857 339 3,913,739 
Special Mention5,386 8,538 33,937 8,301 10,346 23,380 52,386 95 142,369 
Substandard or Lower1,225 9,775 19,393 24,327 11,912 34,825 49,562 1,200 152,219 
   Total commercial and industrial862,535 539,115 449,905 265,433 169,933 639,967 1,279,805 1,634 4,208,327 
Commercial and industrial
Current period gross charge-offs(2,977)(406)(4,966)(208)(286)(800)(5,694)— (15,337)
Current period recoveries6 39 4,691 841 457 2,342 1,211 — 9,587 
Total net (charge-offs) recoveries(2,971)(367)(275)633 171 1,542 (4,483)— (5,750)
Real estate - commercial mortgage
Pass1,086,113 899,172 826,866 624,653 712,223 2,356,308 55,370 — 6,560,705 
Special Mention1,317 60,732 96,508 25,280 33,595 169,732 115 — 387,279 
Substandard or Lower1,537 8,516 28,810 68,818 69,793 151,450 684 1,488 331,096 
Total real estate - commercial mortgage1,088,967 968,420 952,184 718,751 815,611 2,677,490 56,169 1,488 7,279,080 
Real estate - commercial mortgage
Current period gross charge-offs— — (14)(25)(6,972)(1,517)(198)— (8,726)
Current period recoveries— — — — 983 1,491 — — 2,474 
Total net (charge-offs) recoveries— — (14)(25)(5,989)(26)(198)— (6,252)
Total
Pass$2,132,067 $1,735,785 $1,336,686 $941,344 $877,443 $3,055,227 $1,279,636 $339 $11,358,527 
Special Mention12,546 70,045 140,429 53,781 59,665 199,427 52,501 95 588,489 
Substandard or Lower2,762 18,291 48,203 93,145 83,617 190,460 50,473 2,688 489,639 
Total$2,147,375 $1,824,121 $1,525,318 $1,088,270 $1,020,725 $3,445,114 $1,382,610 $3,122 $12,436,655 

(1) Excludes real estate - construction - other.
(2) Loans originated in 2021 include $0.3 million of PPP loans that were assigned a rating of Pass based on the existence of a federal government guaranty through the SBA.
The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the prior period:
December 31, 2020
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(dollars in thousands)AmortizedAmortized
20202019201820172016PriorCost BasisCost BasisTotal
 Real estate - construction (1)
Pass$185,883 $229,097 $217,604 $81,086 $37,976 $110,470 $38,026 $— $900,142 
Special Mention— — — — 7,047 6,212 — — 13,259 
Substandard or Lower— 447 — 2,000 753 1,637 632 — 5,469 
Total real estate - construction185,883 229,544 217,604 83,086 45,776 118,319 38,658 — 918,870 
Real estate - construction (1)
Current period gross charge-offs— — — — — (17)— — (17)
Current period recoveries— — — — 68 5,054 — — 5,122 
Total net (charge-offs) recoveries— — — — 68 5,037 — — 5,105 
Commercial and industrial (2)
Pass2,283,533 508,541 298,567 214,089 208,549 596,646 1,278,689 — 5,388,614 
Special Mention6,633 23,834 29,167 10,945 11,506 25,960 45,994 — 154,039 
Substandard or Lower3,221 5,947 8,434 11,251 11,192 23,852 64,278 — 128,175 
Total commercial and industrial2,293,387 538,322 336,168 236,285 231,247 646,458 1,388,961 — 5,670,828 
Commercial and industrial
Current period gross charge-offs— (114)(30)(488)(393)(520)(17,370)— (18,915)
Current period recoveries— 43 486 216 162 4,531 5,958 — 11,396 
Total net (charge-offs) recoveries— (71)456 (272)(231)4,011 (11,412)— (7,519)
Real estate - commercial mortgage
Pass973,664 917,510 708,946 794,955 783,094 2,213,343 53,041 404 6,444,957 
Special Mention13,639 40,874 84,047 80,705 89,112 167,424 2,364 — 478,165 
Substandard or Lower1,238 6,681 6,247 39,027 22,605 103,007 2,225 940 181,970 
Total real estate - commercial mortgage988,541 965,065 799,240 914,687 894,811 2,483,774 57,630 1,344 7,105,092 
Real estate - commercial mortgage
Current period gross charge-offs(60)(21)(36)(2,515)(29)(1,547)(17)— (4,225)
Current period recoveries— 6 — — 1 1,020 — — 1,027 
Total net (charge-offs) recoveries(60)(15)(36)(2,515)(28)(527)(17)— (3,198)
Total
Pass$3,443,080 $1,655,148 $1,225,117 $1,090,130 $1,029,619 $2,920,459 $1,369,756 $404 $12,733,713 
Special Mention20,272 64,708 113,214 91,650 107,665 199,596 48,358 — 645,463 
Substandard or Lower4,459 13,075 14,681 52,278 34,550 128,496 67,135 940 315,614 
Total$3,467,811 $1,732,931 $1,353,012 $1,234,058 $1,171,834 $3,248,551 $1,485,249 $1,344 $13,694,790 
(1) Excludes real estate - construction - other.
(2) Loans originated in 2020 include $1.6 million of PPP loans that were assigned a rating of Pass based on the existence of a federal government guaranty through the SBA.
The following table presents the amortized cost of these loans based on payment activity, by origination year, for the current period:
December 31, 2021
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(dollars in thousands)AmortizedAmortized
20212020201920182017PriorCost BasisCost BasisTotal
Real estate - home equity
Performing$32,682 $23,478 $7,024 $9,255 $7,415 $92,983 $930,289 $3,999 $1,107,125 
Non-performing— — — 15 282 2,145 8,483 198 11,123 
   Total real estate - home equity32,682 23,478 7,024 9,270 7,697 95,128 938,772 4,197 1,118,248 
Real estate - home equity
Current period gross charge-offs— — (41)— — (171)(464)— (676)
Current period recoveries— — — — — 96 152 — 248 
Total net (charge-offs) recoveries— — (41)— — (75)(312)— (428)
Real estate - residential mortgage
Performing1,548,174 1,133,602 344,625 113,801 198,164 468,842 — — 3,807,208 
Non-performing— 6,753 2,189 3,424 2,844 24,332 — — 39,542 
   Total real estate - residential mortgage1,548,174 1,140,355 346,814 117,225 201,008 493,174 — — 3,846,750 
Real estate - residential mortgage
Current period gross charge-offs— (626)(148)(125)(4)(387)— — (1,290)
Current period recoveries— — 1 18 — 264 92 — 375 
Total net (charge-offs) recoveries— (626)(147)(107)(4)(123)92 — (915)
Consumer
Performing129,759 79,440 66,745 59,309 25,839 42,429 60,553 — 464,074 
Non-performing122 101 60 36 32 203 29 — 583 
   Total consumer129,881 79,541 66,805 59,345 25,871 42,632 60,582 — 464,657 
Consumer
Current period gross charge-offs(175)(491)(455)(238)(224)(240)(810)— (2,633)
Current period recoveries— 223 131 131 167 952 493 — 2,097 
Total net (charge-offs) recoveries(175)(268)(324)(107)(57)712 (317)— (536)
Equipment lease financing and other
Performing97,077 65,316 49,591 34,107 22,444 1,369 — — 269,904 
Non-performing— — — — 15,503 138 — — 15,641 
   Total leasing and other97,077 65,316 49,591 34,107 37,947 1,507 — — 285,545 
Equipment lease financing and other
Current period gross charge-offs(975)(1,276)— — — — — — (2,251)
Current period recoveries255 539 88 10 18 43 — — 953 
Total net (charge-offs) recoveries(720)(737)88 10 18 43 — — (1,298)
Construction - other
Performing144,652 40,040 638 5,028 — — — — 190,358 
Non-performing— — — — 173 — — — 173 
   Total construction - other144,652 40,040 638 5,028 173 — — — 190,531 
Construction - other
Current period gross charge-offs— — — — — — — — — 
Current period recoveries— — — — — — — — — 
Total net (charge-offs) recoveries— — — — — — — — — 
Total
Performing$1,952,344 $1,341,876 $468,623 $221,500 $253,862 $605,623 $990,842 $3,999 $5,838,669 
Non-performing122 6,854 2,249 3,475 18,834 26,818 8,512 198 67,062 
Total$1,952,466 $1,348,730 $470,872 $224,975 $272,696 $632,441 $999,354 $4,197 $5,905,731 
December 31, 2020
Term Loans Amortized Cost Basis by Origination YearRevolving LoansRevolving Loans converted to Term Loans
(dollars in thousands)AmortizedAmortized
20202019201820172016PriorCost BasisCost BasisTotal
Real estate - home equity
Performing$31,445 $8,176 $13,906 $11,024 $11,667 $126,749 $982,285 $5,321 $1,190,573 
Non-performing— 88 23 233 221 2,290 9,485 — 12,340 
   Total real estate - home equity31,445 8,264 13,929 11,257 11,888 129,039 991,770 5,321 1,202,913 
Real estate - home equity
Current period gross charge-offs— — — — — (34)(1,159)— (1,193)
Current period recoveries— — — — — 138 366 — 504 
Total net (charge-offs) recoveries— — — — — 104 (793)— (689)
Real estate - residential mortgage
Performing1,255,532 585,878 228,398 341,563 264,990 434,889 — — 3,111,250 
Non-performing217 2,483 3,177 2,483 722 21,583 — — 30,665 
   Total real estate - residential mortgage1,255,749 588,361 231,575 344,046 265,712 456,472 — — 3,141,915 
Real estate - residential mortgage
Current period gross charge-offs— (68)(101)(190)(7)(254)— — (620)
Current period recoveries— 68 16 1 1 405 — — 491 
Total net (charge-offs) recoveries— — (85)(189)(6)151 — — (129)
Consumer
Performing114,399 98,587 95,072 43,334 25,804 36,086 52,698 42 466,022 
Non-performing168 19 124 141 114 150 34 — 750 
   Total consumer114,567 98,606 95,196 43,475 25,918 36,236 52,732 42 466,772 
Consumer
Current period gross charge-offs(134)(542)(524)(444)(489)(769)(498)— (3,400)
Current period recoveries— 64 165 159 94 101 1,292 — 1,875 
Total net (charge-offs) recoveries(134)(478)(359)(285)(395)(668)794 — (1,525)
Equipment lease financing and other
Performing102,324 65,303 49,453 34,995 15,631 5,040 — — 272,746 
Non-performing— — 30 15,983 142 282 — — 16,437 
   Total leasing and other102,324 65,303 49,483 50,978 15,773 5,322 — — 289,183 
Equipment lease financing and other
Current period gross charge-offs(606)(1,581)— — — — — — (2,187)
Current period recoveries185 349 21 18 11 21 — — 605 
Total net (charge-offs) recoveries(421)(1,232)21 18 11 21 — — (1,582)
Construction - other
Performing96,444 24,888 6,822 — 16 — — — 128,170 
Non-performing— — — 178 — — — — 178 
   Total construction - other96,444 24,888 6,822 178 16 — — — 128,348 
Construction - other
Current period gross charge-offs— — — — — — — — — 
Current period recoveries— — — — — — — — — 
Total net (charge-offs) recoveries— — — — — — — — — 
Total
Performing$1,600,144 $782,832 $393,651 $430,916 $318,108 $602,764 $1,034,983 $5,363 $5,168,761 
Non-performing385 2,590 3,354 19,018 1,199 24,305 9,519 — 60,370 
Total$1,600,529 $785,422 $397,005 $449,934 $319,307 $627,069 $1,044,502 $5,363 $5,229,131 
Non-Performing Assets
The following table presents non-performing assets:
December 31,
2021		December 31,
2020
 (in thousands)
Non-accrual loans$143,666 $137,198 
Loans 90 days or more past due and still accruing8,453 9,929 
Total non-performing loans152,119 147,127 
OREO (1)
1,817 4,178 
Total non-performing assets$153,936 $151,305 
(1) Excludes $6.4 million of residential mortgage properties for which formal foreclosure proceedings were in process as of December 31, 2021.
Aging of Amortized Cost Basis of Loans, by Class 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 Due Non-
DueDueand AccruingAccrualCurrentTotal
(in thousands)
December 31, 2021
Real estate – commercial mortgage$1,089 $1,750 $1,229 $52,815 $7,222,197 $7,279,080 
Commercial and industrial5,457 1,932 488 30,141 4,170,309 4,208,327 
Real estate – residential mortgage22,957 2,920 4,130 35,269 3,781,474 3,846,750 
Real estate – home equity4,369 1,154 2,253 8,671 1,101,801 1,118,248 
Real estate – construction1,318 — — 901 1,137,560 1,139,779 
Consumer3,561 876 353 229 459,638 464,657 
Equipment lease financing and other226 27 — 15,640 252,616 268,509 
Total$38,977 $8,659 $8,453 $143,666 $18,125,595 $18,325,350 
30-59 Days Past
Due		60-89
Days Past
Due		≥ 90 Days
Past Due
and
Accruing		Non-
accrual		CurrentTotal
(in thousands)
December 31, 2020
Real estate – commercial mortgage$14,999 $9,273 $1,177 $51,470 $7,028,173 $7,105,092 
Commercial and industrial11,285 1,068 616 31,993 5,625,866 5,670,828 
Real estate – residential mortgage22,281 7,675 4,687 26,107 3,081,165 3,141,915 
Real estate – home equity5,622 1,654 2,753 9,588 1,183,296 1,202,913 
Real estate – construction1,938 — 155 1,395 1,043,730 1,047,218 
Consumer3,036 501 417 332 462,486 466,772 
Equipment lease financing and other838 150 124 16,313 248,657 266,082 
Total$59,999 $20,321 $9,929 $137,198 $18,673,373 $18,900,820 
Troubled Debt Restructurings on Financing Receivables
The following table presents TDRs, by class segment for the years ended December 31:
20212020
 (in thousands)
Real estate - commercial mortgage$3,464 $28,451 
Commercial and industrial1,857 6,982 
Real estate - residential mortgage11,948 18,602 
Real estate - home equity12,218 14,391 
Consumer5 — 
Total accruing TDRs29,492 68,426 
Non-accrual TDRs (1)
55,945 35,755 
Total TDRs$85,437 $104,181 
 
(1) Included within non-accrual loans in the preceding table
Loan Terms Modified Under Troubled Debt Restructurings during The Period By Class Segment
The following table presents TDRs, by class segment, for loans that were modified during the years ended December 31:
202120202019
Number of LoansPost-Modification Recorded InvestmentNumber of LoansPost-Modification Recorded InvestmentNumber of LoansPost-Modification Recorded Investment
(dollars in thousands)
Real estate - commercial mortgage9 $16,020 12 $24,868 2 $263 
Commercial and industrial10 2,823 20 5,218 16 5,378 
Real estate - residential mortgage46 13,256 48 10,493 6 2,252 
Real estate - home equity30 1,226 48 4,359 59 2,706 
Real estate - construction1 154 — — — — 
Consumer— — 14 345 — — 
Total96 $33,479 142 $45,283 83 $10,599