Allowance for Credit Losses

12 Months Ended

Dec. 31, 2023

Allowance for Credit Losses

Allowance for Credit Losses

5. Allowance for Credit Losses

The Company maintains an ACL that is deducted from the amortized cost basis of loans and leases to present the net carrying value of loans and leases expected to be collected. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount of loans and leases.

The Company also maintains an estimated reserve for unfunded commitments on the consolidated balance sheets. The reserve for unfunded commitments is reduced in the period in which the off-balance sheet financial instruments expire, loan funding occurs, or is otherwise settled.

Rollforward of the Allowance for Credit Losses

The following presents the activity in the ACL by class of loans and leases for the years ended December 31, 2023, 2022 and 2021:

	Year Ended December 31, 2023
	Commercial Lending								Residential Lending
	Commercial		Commercial								Home
	and		Real				Lease		Residential		Equity
(dollars in thousands)	Industrial		Estate		Construction		Financing		Mortgage		Line		Consumer		Total
Allowance for credit losses:
Balance at beginning of year	$	14,564	$	43,810	$	5,843	$	1,551	$	35,175	$	8,296	$	34,661	$	143,900
Charge-offs		(3,482)		(2,500)		—		—		(122)		(292)		(17,110)		(23,506)
Recoveries		3,346		—		—		—		141		702		7,090		11,279
Provision		528		2,634		4,549		203		1,686		3,022		12,238		24,860
Balance at end of year	$	14,956	$	43,944	$	10,392	$	1,754	$	36,880	$	11,728	$	36,879	$	156,533

	Year Ended December 31, 2022
	Commercial Lending								Residential Lending
	Commercial		Commercial								Home
	and		Real				Lease		Residential		Equity
(dollars in thousands)	Industrial		Estate		Construction		Financing		Mortgage		Line		Consumer		Total
Allowance for credit losses:
Balance at beginning of year	$	20,080	$	42,951	$	9,773	$	1,659	$	34,364	$	5,642	$	42,793	$	157,262
Charge-offs		(2,012)		(750)		—		—		(103)		(1,175)		(16,848)		(20,888)
Recoveries		897		14		—		60		418		713		7,545		9,647
Provision		(4,401)		1,595		(3,930)		(168)		496		3,116		1,171		(2,121)
Balance at end of year	$	14,564	$	43,810	$	5,843	$	1,551	$	35,175	$	8,296	$	34,661	$	143,900

	Year Ended December 31, 2021
	Commercial Lending								Residential Lending
	Commercial		Commercial								Home
	and		Real				Lease		Residential		Equity
(dollars in thousands)	Industrial		Estate		Construction		Financing		Mortgage		Line		Consumer		Total
Allowance for credit losses:
Balance at beginning of year	$	24,711	$	58,123	$	10,039	$	3,298	$	40,461	$	7,163	$	64,659	$	208,454
Charge-offs		(5,949)		(66)		—		—		(632)		(342)		(16,634)		(23,623)
Recoveries		867		39		266		—		261		117		9,600		11,150
Provision		451		(15,145)		(532)		(1,639)		(5,726)		(1,296)		(14,832)		(38,719)
Balance at end of year	$	20,080	$	42,951	$	9,773	$	1,659	$	34,364	$	5,642	$	42,793	$	157,262

Rollforward of the Reserve for Unfunded Commitments

The following presents the activity in the Reserve for Unfunded Commitments for the years ended December 31, 2023, 2022 and 2021:

	Year Ended December 31, 2023
	Commercial Lending								Residential Lending
	Commercial		Commercial								Home
	and		Real				Lease		Residential		Equity
(dollars in thousands)	Industrial		Estate		Construction		Financing		Mortgage		Line		Consumer		Total
Reserve for unfunded commitments:
Balance at beginning of year	$	7,811	$	2,004	$	7,470	$	—	$	30	$	16,483	$	37	$	33,835
Provision		1,305		(217)		578		—		(6)		106		4		1,770
Balance at end of year	$	9,116	$	1,787	$	8,048	$	—	$	24	$	16,589	$	41	$	35,605

	Year Ended December 31, 2022
	Commercial Lending								Residential Lending
	Commercial		Commercial								Home
	and		Real				Lease		Residential		Equity
(dollars in thousands)	Industrial		Estate		Construction		Financing		Mortgage		Line		Consumer		Total
Reserve for unfunded commitments:
Balance at beginning of year	$	8,615	$	2,114	$	8,963	$	—	$	15	$	10,546	$	69	$	30,322
Provision		(804)		(110)		(1,493)		—		15		5,937		(32)		3,513
Balance at end of year	$	7,811	$	2,004	$	7,470	$	—	$	30	$	16,483	$	37	$	33,835

	Year Ended December 31, 2021
	Commercial Lending								Residential Lending
	Commercial		Commercial								Home
	and		Real				Lease		Residential		Equity
(dollars in thousands)	Industrial		Estate		Construction		Financing		Mortgage		Line		Consumer		Total
Reserve for unfunded commitments:
Balance at beginning of year	$	11,719	$	1,328	$	9,037	$	—	$	2	$	8,452	$	65	$	30,603
Provision		(3,104)		786		(74)		—		13		2,094		4		(281)
Balance at end of year	$	8,615	$	2,114	$	8,963	$	—	$	15	$	10,546	$	69	$	30,322

Credit Quality Information

The Company performs an internal loan review and grading or scoring procedures on an ongoing basis. The review provides management with periodic information as to the quality of the loan portfolio and effectiveness of the Company’s lending policies and procedures. The objective of the loan review and grading or scoring procedures is to identify, in a timely manner, existing or emerging credit quality issues so that appropriate steps can be initiated to avoid or minimize future losses.

Loans and leases subject to grading primarily include: commercial and industrial loans, commercial real estate loans, construction loans and lease financing. Other loans subject to grading include installment loans to businesses or individuals for business and commercial purposes, overdraft lines of credit, commercial credit cards, and other credits as may be determined. Credit quality indicators for internally graded loans and leases are generally updated on an annual basis or on a quarterly basis for those loans and leases deemed to be of potentially higher risk.

An internal credit risk rating system is used to determine loan grade and is based on borrower credit risk and transactional risk. The loan grading process is a mechanism used to determine the risk of a particular borrower and is based on the following factors of a borrower: character, earnings and operating cash flow, asset and liability structure, debt capacity, management and controls, borrowing entity, and industry and operating environment.

Pass – “Pass” (uncriticized) loans and leases are not considered to carry greater than normal risk. The borrower has the apparent ability to satisfy obligations to the Company, and therefore no loss in ultimate collection is anticipated.

Special Mention – Loans and leases that have potential weaknesses that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for assets or in the institution’s credit position at some future date. Special mention assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification.

Substandard – Loans and leases that are inadequately protected by the current financial condition and paying capacity of the obligor or by any collateral pledged. Loans and leases so classified must have a well-defined weakness or weaknesses that jeopardize the collection of the debt. They are characterized by the distinct possibility that the bank may sustain some loss if the deficiencies are not corrected.

Doubtful – Loans and leases that have weaknesses found in substandard borrowers with the added provision that the weaknesses make collection of debt in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.

Loss – Loans and leases classified as loss are considered uncollectible and of such little value that their continuance as an asset is not warranted. This classification does not mean that the loan or lease has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be effected in the future.

Loans that are primarily monitored for credit quality using FICO scores include: residential mortgage loans, home equity lines and consumer loans. FICO scores are calculated primarily based on a consideration of payment history, the current amount of debt, the length of credit history available, a recent history of new sources of credit and the mix of credit type. FICO scores are updated on a monthly, quarterly or bi-annual basis, depending on the product type.

The amortized cost basis by year of origination and credit quality indicator of the Company's loans and leases as of December 31, 2023 was as follows:

															Revolving
															Loans
															Converted
	Term Loans												Revolving		to Term
	Amortized Cost Basis by Origination Year												Loans		Loans
													Amortized		Amortized
(dollars in thousands)	2023		2022		2021		2020		2019		Prior		Cost Basis		Cost Basis		Total
Commercial Lending
Commercial and Industrial
Risk rating:
Pass	$	85,839	$	273,663	$	346,024	$	32,753	$	146,893	$	141,681	$	971,065	$	1,823	$	1,999,741
Special Mention		1		44,069		80		653		1,032		1,290		22,807		14		69,946
Substandard		—		342		230		677		1,686		829		8,330		—		12,094
Other (1)		15,978		11,598		4,814		2,370		1,702		1,125		45,981		—		83,568
Total Commercial and Industrial		101,818		329,672		351,148		36,453		151,313		144,925		1,048,183		1,837		2,165,349
Current period gross charge-offs		130		70		75		87		168		2,952		—		—		3,482
Commercial Real Estate
Risk rating:
Pass		346,369		872,783		676,362		337,529		523,446		1,414,613		74,238		1,350		4,246,690
Special Mention		2,307		7,618		41,320		1,359		13,550		11,998		819		—		78,971
Substandard		205		5,079		2,003		—		2,953		2,545		1,655		—		14,440
Other (1)		—		—		—		—		—		142		—		—		142
Total Commercial Real Estate		348,881		885,480		719,685		338,888		539,949		1,429,298		76,712		1,350		4,340,243
Current period gross charge-offs		—		—		—		—		2,500		—		—		—		2,500
Construction
Risk rating:
Pass		156,432		269,623		265,674		60,057		63,018		27,847		6,070		—		848,721
Special Mention		—		—		—		—		189		665		—		—		854
Other (1)		12,728		21,036		8,250		2,143		2,031		3,820		709		—		50,717
Total Construction		169,160		290,659		273,924		62,200		65,238		32,332		6,779		—		900,292
Current period gross charge-offs		—		—		—		—		—		—		—		—		—
Lease Financing
Risk rating:
Pass		145,914		82,833		18,680		31,791		30,299		68,520		—		—		378,037
Special Mention		56		137		414		35		—		—		—		—		642
Substandard		712		416		—		—		2		—		—		—		1,130
Total Lease Financing		146,682		83,386		19,094		31,826		30,301		68,520		—		—		379,809
Current period gross charge-offs		—		—		—		—		—		—		—		—		—
Total Commercial Lending	$	766,541	$	1,589,197	$	1,363,851	$	469,367	$	786,801	$	1,675,075	$	1,131,674	$	3,187	$	7,785,693
Current period gross charge-offs	$	130	$	70	$	75	$	87	$	2,668	$	2,952	$	—	$	—	$	5,982

(continued)

															Revolving
															Loans
															Converted
	Term Loans												Revolving		to Term
	Amortized Cost Basis by Origination Year												Loans		Loans
(continued)													Amortized		Amortized
(dollars in thousands)	2023		2022		2021		2020		2019		Prior		Cost Basis		Cost Basis		Total
Residential Lending
Residential Mortgage
FICO:
740 and greater	$	211,598	$	529,296	$	999,522	$	529,881	$	227,058	$	987,251	$	—	$	—	$	3,484,606
680 - 739		36,975		67,205		117,337		68,122		33,148		130,387		—		—		453,174
620 - 679		3,544		16,395		19,184		12,811		4,096		38,987		—		—		95,017
550 - 619		1,305		6,521		1,917		2,492		398		11,679		—		—		24,312
Less than 550		—		—		2,909		2,017		582		6,439		—		—		11,947
No Score (3)		9,137		19,311		11,492		6,043		9,679		51,109		—		—		106,771
Other (2)		15,802		17,528		17,432		12,534		8,599		25,513		10,080		—		107,488
Total Residential Mortgage		278,361		656,256		1,169,793		633,900		283,560		1,251,365		10,080		—		4,283,315
Current period gross charge-offs		—		—		—		—		—		122		—		—		122
Home Equity Line
FICO:
740 and greater		—		—		—		—		—		—		964,932		1,511		966,443
680 - 739		—		—		—		—		—		—		151,716		1,920		153,636
620 - 679		—		—		—		—		—		—		36,541		1,189		37,730
550 - 619		—		—		—		—		—		—		9,896		1,012		10,908
Less than 550		—		—		—		—		—		—		4,488		100		4,588
No Score (3)		—		—		—		—		—		—		1,283		—		1,283
Total Home Equity Line		—		—		—		—		—		—		1,168,856		5,732		1,174,588
Current period gross charge-offs		—		—		—		—		—		—		273		19		292
Total Residential Lending	$	278,361	$	656,256	$	1,169,793	$	633,900	$	283,560	$	1,251,365	$	1,178,936	$	5,732	$	5,457,903
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	122	$	273	$	19	$	414
Consumer Lending
FICO:
740 and greater		92,117		128,358		76,148		33,507		21,819		8,970		123,592		155		484,666
680 - 739		68,865		71,031		37,925		17,116		13,270		5,690		76,645		401		290,943
620 - 679		28,533		29,229		16,919		7,843		7,972		4,624		35,210		781		131,111
550 - 619		4,996		10,859		7,760		4,917		4,651		2,986		13,223		925		50,317
Less than 550		1,790		6,370		4,842		2,796		2,905		2,040		5,222		455		26,420
No Score (3)		1,545		229		—		—		1		10		42,933		136		44,854
Other (2)		361		368		982		335		1,059		1		78,484		—		81,590
Total Consumer Lending	$	198,207	$	246,444	$	144,576	$	66,514	$	51,677	$	24,321	$	375,309	$	2,853	$	1,109,901
Current period gross charge-offs	$	639	$	2,400	$	2,135	$	1,142	$	1,816	$	2,622	$	5,790	$	566	$	17,110
Total Loans and Leases	$	1,243,109	$	2,491,897	$	2,678,220	$	1,169,781	$	1,122,038	$	2,950,761	$	2,685,919	$	11,772	$	14,353,497
Current period gross charge-offs	$	769	$	2,470	$	2,210	$	1,229	$	4,484	$	5,696	$	6,063	$	585	$	23,506

(1) Other credit quality indicators used for monitoring purposes are primarily FICO scores. The majority of the loans in this population were originated to borrowers with a prime FICO score.

(2) Other credit quality indicators used for monitoring purposes are primarily internal risk ratings. The majority of the loans in this population were graded with a “Pass” rating.

(3) No FICO scores are primarily related to loans and leases extended to non-residents. Loans and leases of this nature are primarily secured by collateral and/or are closely monitored for performance.

The amortized cost basis by year of origination and credit quality indicator of the Company's loans and leases as of December 31, 2022 was as follows:

															Revolving
															Loans
															Converted
	Term Loans												Revolving		to Term
	Amortized Cost Basis by Origination Year												Loans		Loans
													Amortized		Amortized
(dollars in thousands)	2022		2021		2020		2019		2018		Prior		Cost Basis		Cost Basis		Total
Commercial Lending
Commercial and Industrial
Risk rating:
Pass	$	359,881	$	422,567	$	54,656	$	170,222	$	51,476	$	137,257	$	894,384	$	15,715	$	2,106,158
Special Mention		2,059		240		1,371		2,643		184		1,431		22,897		378		31,203
Substandard		625		289		1,117		1,092		668		885		14,733		65		19,474
Other (1)		17,679		7,721		4,329		3,965		1,881		1,167		42,320		—		79,062
Total Commercial and Industrial		380,244		430,817		61,473		177,922		54,209		140,740		974,334		16,158		2,235,897
Commercial Real Estate
Risk rating:
Pass		889,583		695,882		319,838		565,587		395,474		1,173,163		48,081		—		4,087,608
Special Mention		170		—		555		14,878		512		11,398		675		—		28,188
Substandard		—		—		173		—		1,704		14,485		—		—		16,362
Other (1)		—		—		—		—		—		151		—		—		151
Total Commercial Real Estate		889,753		695,882		320,566		580,465		397,690		1,199,197		48,756		—		4,132,309
Construction
Risk rating:
Pass		124,464		261,536		96,423		97,000		88,973		84,704		25,957		—		779,057
Special Mention		—		—		—		221		—		—		—		—		221
Substandard		—		—		—		—		21		490		—		—		511
Other (1)		29,694		21,339		4,686		2,201		3,784		2,196		954		—		64,854
Total Construction		154,158		282,875		101,109		99,422		92,778		87,390		26,911		—		844,643
Lease Financing
Risk rating:
Pass		113,563		24,052		43,497		37,502		6,004		67,687		—		—		292,305
Special Mention		—		411		2,498		1,299		—		—		—		—		4,208
Substandard		—		—		197		12		11		1,357		—		—		1,577
Total Lease Financing		113,563		24,463		46,192		38,813		6,015		69,044		—		—		298,090
Total Commercial Lending	$	1,537,718	$	1,434,037	$	529,340	$	896,622	$	550,692	$	1,496,371	$	1,050,001	$	16,158	$	7,510,939

(continued)

															Revolving
															Loans
															Converted
	Term Loans												Revolving		to Term
	Amortized Cost Basis by Origination Year												Loans		Loans
(continued)													Amortized		Amortized
(dollars in thousands)	2022		2021		2020		2019		2018		Prior		Cost Basis		Cost Basis		Total
Residential Lending
Residential Mortgage
FICO:
740 and greater	$	557,636	$	1,064,444	$	560,463	$	245,241	$	165,258	$	920,100	$	—	$	—	$	3,513,142
680 - 739		73,929		112,672		82,416		40,355		22,126		130,508		—		—		462,006
620 - 679		12,320		13,804		9,881		3,649		3,054		35,441		—		—		78,149
550 - 619		2,455		2,246		1,791		263		601		6,955		—		—		14,311
Less than 550		—		1,321		367		—		966		5,304		—		—		7,958
No Score (3)		22,289		14,671		6,820		10,599		15,921		47,245		—		—		117,545
Other (2)		18,970		18,211		15,287		9,201		9,124		29,128		9,202		554		109,677
Total Residential Mortgage		687,599		1,227,369		677,025		309,308		217,050		1,174,681		9,202		554		4,302,788
Home Equity Line
FICO:
740 and greater		—		—		—		—		—		—		817,123		2,059		819,182
680 - 739		—		—		—		—		—		—		171,117		2,714		173,831
620 - 679		—		—		—		—		—		—		45,368		2,100		47,468
550 - 619		—		—		—		—		—		—		7,485		1,029		8,514
Less than 550		—		—		—		—		—		—		1,151		481		1,632
No Score (3)		—		—		—		—		—		—		4,724		—		4,724
Total Home Equity Line		—		—		—		—		—		—		1,046,968		8,383		1,055,351
Total Residential Lending	$	687,599	$	1,227,369	$	677,025	$	309,308	$	217,050	$	1,174,681	$	1,056,170	$	8,937	$	5,358,139
Consumer Lending
FICO:
740 and greater		200,887		111,047		53,534		43,912		24,951		8,432		125,126		185		568,074
680 - 739		99,787		67,140		37,260		31,751		15,874		7,665		72,101		514		332,092
620 - 679		25,949		29,587		14,226		16,872		9,672		6,488		31,854		937		135,585
550 - 619		3,017		5,475		5,226		8,056		5,396		3,924		11,269		854		43,217
Less than 550		656		1,351		2,286		3,779		1,869		1,593		3,541		443		15,518
No Score (3)		3,205		258		—		51		24		29		38,805		227		42,599
Other (2)		1,615		4,082		353		1,368		—		—		78,430		1		85,849
Total Consumer Lending	$	335,116	$	218,940	$	112,885	$	105,789	$	57,786	$	28,131	$	361,126	$	3,161	$	1,222,934
Total Loans and Leases	$	2,560,433	$	2,880,346	$	1,319,250	$	1,311,719	$	825,528	$	2,699,183	$	2,467,297	$	28,256	$	14,092,012

(1) Other credit quality indicators used for monitoring purposes are primarily FICO scores. The majority of the loans in this population were originated to borrowers with a prime FICO score.

(2) Other credit quality indicators used for monitoring purposes are primarily internal risk ratings. The majority of the loans in this population were graded with a “Pass” rating.

(3) No FICO scores are primarily related to loans and leases extended to non-residents. Loans and leases of this nature are primarily secured by collateral and/or are closely monitored for performance.

There were no loans and leases graded as Loss as of December 31, 2023 and 2022.

Past-Due Status

The Company continually updates its aging analysis for loans and leases to monitor the migration of loans and leases into past due categories. The Company considers loans and leases that are delinquent for 30 days or more to be past due. As of December 31, 2023 and 2022, the aging analysis of the amortized cost basis of the Company’s past due loans and leases was as follows:

	December 31, 2023
	Past Due												Loans and
					Greater								Leases Past
					Than or								Due 90 Days
	30-59		60-89		Equal to								or More and
	Days		Days		90 Days		Total				Total Loans		Still Accruing
(dollars in thousands)	Past Due		Past Due		Past Due		Past Due		Current		and Leases		Interest
Commercial and industrial	$	2,611	$	349	$	1,464	$	4,424	$	2,160,925	$	2,165,349	$	494
Commercial real estate		—		196		300		496		4,339,747		4,340,243		300
Construction		25,191		—		—		25,191		875,101		900,292		—
Lease financing		—		—		—		—		379,809		379,809		—
Residential mortgage		5,244		1,475		4,720		11,439		4,271,876		4,283,315		—
Home equity line		5,940		624		3,550		10,114		1,164,474		1,174,588		—
Consumer		23,259		3,897		2,702		29,858		1,080,043		1,109,901		2,702
Total	$	62,245	$	6,541	$	12,736	$	81,522	$	14,271,975	$	14,353,497	$	3,496

	December 31, 2022
	Past Due												Loans and
					Greater								Leases Past
					Than or								Due 90 Days
	30-59		60-89		Equal to								or More and
	Days		Days		90 Days		Total				Total Loans		Still Accruing
(dollars in thousands)	Past Due		Past Due		Past Due		Past Due		Current		and Leases		Interest
Commercial and industrial	$	2,682	$	769	$	1,441	$	4,892	$	2,231,005	$	2,235,897	$	291
Commercial real estate		4,505		—		727		5,232		4,127,077		4,132,309		—
Construction		109		—		—		109		844,534		844,643		—
Lease financing		—		—		—		—		298,090		298,090		—
Residential mortgage		3,681		1,983		2,572		8,236		4,294,552		4,302,788		58
Home equity line		5,161		1,381		2,072		8,614		1,046,737		1,055,351		—
Consumer		29,927		6,801		2,886		39,614		1,183,320		1,222,934		2,885
Total	$	46,065	$	10,934	$	9,698	$	66,697	$	14,025,315	$	14,092,012	$	3,234

Nonaccrual Loans and Leases

The Company generally places a loan or lease on nonaccrual status when management believes that collection of principal or interest has become doubtful or when a loan or lease becomes 90 days past due as to principal or interest, unless it is well secured and in the process of collection. The Company charges off a loan or lease when facts indicate that the loan or lease is considered uncollectible.

The amortized cost basis of loans and leases on nonaccrual status as of December 31, 2023 and 2022 and the amortized cost basis of loans and leases on nonaccrual status with no allowance for credit losses as of December 31, 2023 and 2022 were as follows:

	December 31, 2023
	Nonaccrual
	Loans
	and Leases
	With No		Nonaccrual
	Allowance		Loans
(dollars in thousands)	for Credit Losses		and Leases
Commercial and industrial	$	—	$	970
Commercial real estate		2,685		2,953
Residential mortgage		2,667		7,620
Home equity line		1,163		7,052
Total Nonaccrual Loans and Leases	$	6,515	$	18,595

	December 31, 2022
	Nonaccrual
	Loans
	and Leases
	With No		Nonaccrual
	Allowance		Loans
(dollars in thousands)	for Credit Losses		and Leases
Commercial and industrial	$	665	$	1,215
Commercial real estate		727		727
Residential mortgage		1,560		6,166
Home equity line		596		3,797
Total Nonaccrual Loans and Leases	$	3,548	$	11,905

During the years ended December 31, 2023, 2022 and 2021, the Company recognized interest income of $0.6 million, $0.4 million and $0.4 million, respectively, on nonaccrual loans and leases. Furthermore, for the years ended December 31, 2023, 2022 and 2021, the amount of accrued interest receivables written off by reversing interest income was $1.0 million, $0.9 million and $0.8 million, respectively.

Collateral-Dependent Loans and Leases

Collateral-dependent loans and leases are those for which repayment (on the basis of the Company’s assessment as of the reporting date) is expected to be provided substantially through the operation or sale of the collateral and the borrower is experiencing financial difficulty. As of December 31, 2023 and 2022, the amortized cost basis of collateral-dependent loans was $11.1 million and $8.2 million, respectively. As of December 31, 2023 and 2022, these loans were primarily collateralized by residential real estate property and the fair value of collateral on substantially all collateral-dependent loans were significantly in excess of their amortized cost basis.

Loan Modifications to Borrowers Experiencing Financial Difficulty

The Company adopted the provisions of Accounting Standards Update (“ASU”) No. 2022-02, Financial Instruments – Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures, on January 1, 2023. This update eliminates the accounting guidance on troubled debt restructurings (“TDRs”) for creditors in Subtopic 310-40, updates the requirements related to accounting for credit losses under Topic 326 and adds enhanced disclosures for creditors with respect to loan refinancings and restructurings for borrowers experiencing financial difficulty. For additional information, see “Note 1. Organization and Summary of Significant Accounting Policies.”

Commercial and industrial loans with a borrower experiencing financial difficulty may be modified through interest rate reductions, term extensions, and converting revolving credit lines to term loans. Modifications of commercial real estate and construction loans with a borrower experiencing financial difficulty may involve reducing the interest rate for the remaining term of the loan or extending the maturity date at an interest rate lower than the current market rate for new debt with similar risk. Modifications of construction loans with a borrower experiencing financial difficulty may also involve extending the interest-only payment period. Interest continues to accrue on the missed payments and as a result, the effective yield on the loan remains unchanged. Modifications of residential real estate loans with a borrower experiencing financial difficulty may be comprised of loans where monthly payments are lowered to accommodate the borrowers’ financial needs for a period of time, including extended interest-only periods and reamortization of the balance. Modifications of consumer loans with a borrower experiencing financial difficulty may involve interest rate reductions and term extensions.

Loans modified with a borrower experiencing financial difficulty, whether in default or not, may already be on nonaccrual status and in some cases, partial charge-offs may have already been taken against the outstanding loan balance. Loans modified with a borrower experiencing financial difficulty are evaluated for impairment. As a result, this may have a financial effect of impacting the specific ACL associated with the loan. An ACL for impaired commercial loans, including commercial real estate and construction loans, is measured based on the present value of expected future cash flows discounted at the loan's effective interest rate or if the loan is collateral-dependent, the estimated fair value of the collateral, less any selling costs. An ACL for impaired residential real estate loans is measured based on the estimated fair value of the collateral, less any selling costs. Management exercises significant judgment in developing these estimates.

The following tables present, by class of financing receivable and type of modification granted, the amortized cost basis as of December 31, 2023, related to loans modified to borrowers experiencing financial difficulty during the year ended December 31, 2023:

	Interest Rate Reduction
		Year Ended
		December 31, 2023
		Amortized	% of Total Class
(dollars in thousands)		Cost Basis(1)	of Financing Receivable
Commercial real estate	$	5	n/m	%
Consumer		1,161	0.10
Total	$	1,166	0.01	%

n/m  – Represents less than 0.01% of total class of financing receivable.

(1) The amortized cost basis reflects all partial paydowns and charge-offs since the modification date and do not include loans modified to borrowers experiencing financial difficulty that have been fully paid off, charged off, or foreclosed upon by the end of the year.
​

	Term Extension
		Year Ended
		December 31, 2023
		Amortized	% of Total Class
(dollars in thousands)		Cost Basis(1)	of Financing Receivable
Commercial and industrial	$	524	0.02	%
Commercial real estate		3,114	0.07
Construction		665	0.07
Residential mortgage		1,410	0.03
Consumer		135	0.01
Total	$	5,848	0.04	%

n/m  – Represents less than 0.01% of total class of financing receivable.

(1) The amortized cost basis reflects all partial paydowns and charge-offs since the modification date and do not include loans modified to borrowers experiencing financial difficulty that have been fully paid off, charged off, or foreclosed upon by the end of the year.
​

The following tables describe, by class of financing receivable and type of modification granted, the financial effect of the modifications made to borrowers experiencing financial difficulty during the year ended December 31, 2023:

	Interest Rate Reduction
	Financial Effect
	Year Ended December 31, 2023
Commercial real estate	Reduced weighted-average contractual interest rate by 0.75%.
Consumer	Reduced weighted-average contractual interest rate by 13.01%.

	Term Extension
	Financial Effect
	Year Ended December 31, 2023
Commercial and industrial	Added a weighted-average 2.1 years to the life of loans.
Commercial real estate	Added a weighted-average 2.1 years to the life of loans.
Construction	Added a weighted-average 1.0 years to the life of loans.
Residential mortgage	Added a weighted-average 2.1 years to the life of loans.
Consumer	Added a weighted-average 3.8 years to the life of loans.

The following table presents, by class of financing receivable and type of modification granted, the amortized cost basis, as of December 31, 2023, of loans that had a payment default during the year ended December 31, 2023 and were modified in the 12 months before default to borrowers experiencing financial difficulty. The Company is reporting these defaulted loans based on a payment default definition of 30 days past due:

	Amortized Cost Basis of Modified Loans That Subsequently Defaulted(1)
	Year Ended December 31, 2023
(dollars in thousands)	Interest Rate Reduction		Term Extension
Consumer	$	318	$	6
Total	$	318	$	6

(1) The amortized cost basis reflects all partial paydowns and charge-offs since the modification date and do not include loans modified to borrowers experiencing financial difficulty that have been fully paid off, charged off, or foreclosed upon by the end of the year.

Performance of the loans that are modified to borrowers experiencing financial difficulty is monitored to understand the effectiveness of the Company’s modification efforts. As of December 31, 2023, the aging analysis of the amortized cost basis of the performance of loans that have been modified in the last 12 months related to borrowers experiencing financial difficulty was as follows:

		December 31, 2023
		Past Due
						Greater Than
						or Equal to
		30-59 Days		60-89 Days		90 Days		Total
(dollars in thousands)		Past Due		Past Due		Past Due		Past Due		Current		Total
Commercial and industrial	$	—	$	—	$	—	$	—	$	524	$	524
Commercial real estate		—		—		—		—		3,119		3,119
Construction		—		—		—		—		665		665
Residential mortgage		—		—		—		—		1,410		1,410
Consumer		107		70		15		192		1,104		1,296
Total	$	107	$	70	$	15	$	192	$	6,822	$	7,014

The Company had commitments to extend credit, standby letters of credit, and commercial letters of credit totaling $6.5 billion as of December 31, 2023. Of the $6.5 billion at December 31, 2023, there were commitments of $5.0 million to lend additional funds to borrowers experiencing financial difficulty for which the Company had modified the terms of the loans in the form of an interest rate reduction or a term extension during the year ended December 31, 2023.

Troubled Debt Restructuring Disclosures Prior to Adoption of ASU No. 2022-02

Prior to the adoption of ASU No. 2022-02, the Company accounted for a modification to the contractual terms of a loan that resulted in granting a concession to a borrower experiencing financial difficulty as a TDR. On January 1, 2023, the Company adopted ASU No. 2022-02, which eliminated TDR accounting prospectively for all restructurings occurring on or after January 1, 2023. Loans that were restructured in a TDR prior to the adoption of ASU No. 2022-02 will continue to be accounted for under the historical TDR accounting until the loan is paid off or subsequently modified. The disclosures below related to TDRs for prior periods are presented in accordance with Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors.

Commercial and industrial loans modified in a TDR may have involved temporary interest-only payments, term extensions, and converting revolving credit lines to term loans. Modifications of commercial real estate and construction loans in a TDR may have involved reducing the interest rate for the remaining term of the loan, extending the maturity date at an interest rate lower than the current market rate for new debt with similar risk, or substituting or adding a new borrower or guarantor. Modifications of construction loans in a TDR may have also involved extending the interest-only payment period. Interest continued to accrue on the missed payments and as a result, the effective yield on the loan remained unchanged. Residential real estate loans modified in a TDR may have been comprised of loans where monthly payments were lowered to accommodate the borrowers’ financial needs for a period of time, including extended interest-only periods and reamortization of the balance. Modifications of consumer loans in a TDR may have involved temporary or permanent reduced payments, temporary interest-only payments and below-market interest rates.

Loans modified in a TDR may have already been on nonaccrual status and in some cases, partial charge-offs may have already been taken against the outstanding loan balance. Loans modified in a TDR were evaluated for impairment. As a result, this may have had a financial effect of impacting the specific ACL associated with the loan. An ACL for impaired commercial loans, including commercial real estate and construction loans, that had been modified in a TDR was measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or if the loan was collateral-dependent, the estimated fair value of the collateral, less any selling costs. An ACL for impaired residential real estate loans that had been modified in a TDR was measured based on the estimated fair value of the collateral, less any selling costs. Management exercised significant judgment in developing these estimates.

The following presents, by class, information related to loans modified in a TDR during the years ended December 31, 2022 and 2021, presented in accordance with Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors:

	Year Ended December 31, 2022
	Number of	Recorded		Related
(dollars in thousands)	Contracts(1)	Investment(2)		ACL
Commercial and industrial	5	$	205	$	17
Residential mortgage	1		247		31
Consumer	258		2,173		443
Total	264	$	2,625	$	491

	Year Ended December 31, 2021
	Number of	Recorded		Related
(dollars in thousands)	Contracts(1)	Investment(2)		ACL
Commercial and industrial	11	$	1,481	$	124
Commercial real estate	1		346		78
Construction	12		689		69
Residential mortgage	13		5,539		207
Consumer	1,652		15,710		2,127
Total	1,689	$	23,765	$	2,605

(1) The number of contracts does not include TDRs that have been fully paid off, charged off or foreclosed upon by the end of the year.

(2) The recorded investment balances reflect all partial paydowns and charge-offs since the modification date and do not include TDRs that have been fully paid off, charged off or foreclosed upon by the end of the year.

The above loans were modified in a TDR through an extension of maturity dates, reduced payments, or below-market interest rates.

The Company had commitments to extend credit, standby letters of credit and commercial letters of credit totaling  $7.0 billion and $6.7 billion as of December 31, 2022 and 2021, respectively. Of the $7.0 billion at December 31, 2022, there were commitments of $0.1 million related to borrowers who had loan terms modified in a TDR. Of the $6.7 billion at December 31, 2021, there were commitments of $0.2 million related to borrowers who had loan terms modified in a TDR.

The following table presents, by class, loans modified in TDRs that have defaulted during the years ended December 31, 2022 and 2021 within 12 months of their permanent modification date for the years indicated, presented in accordance with Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors. The Company was reporting these defaulted TDRs based on a payment default definition of 30 days past due:

	Year Ended December 31,
	2022			2021
	Number of	Recorded		Number of	Recorded
(dollars in thousands)	Contracts(1)	Investment(2)		Contracts(1)	Investment(2)
Commercial and industrial	2	$	541	3	$	569
Construction	—		—	1		450
Commercial real estate	—		—	1		356
Residential mortgage	—		—	4		1,012
Consumer	213		2,623	405		5,272
Total	215	$	3,164	414	$	7,659

(1) The number of contracts does not include TDRs that have been fully paid off, charged off or foreclosed upon by the end of the year.

(2) The recorded investment balances reflect all partial paydowns and charge-offs since the modification date and do not include TDRs that have been fully paid off, charged off or foreclosed upon by the end of the year.

Foreclosed Property

There were no residential real estate properties held from foreclosed residential mortgage loans as of December 31, 2023. Residential real estate property held from one foreclosed residential mortgage loan included in other real estate owned and repossessed personal property shown in the consolidated balance sheets was $0.1 million as of December 31, 2022.