10-Q

Table of Contents

.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

___________________________________________________ 

FORM 10-Q

___________________________________________________

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2024

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number: 1-9047

___________________________________________________

Independent Bank Corp.

(Exact name of registrant as specified in its charter)

 ___________________________________________________

MA	04-2870273
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

Office Address:	2036 Washington Street,	Hanover,	MA	02339
Mailing Address:	288 Union Street,	Rockland,	MA	02370
(Address of principal executive offices, including zip code)

(781) 878-6100

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:
Title of each Class	Trading Symbol	Name of each exchange on which registered
Common Stock, $0.01 par value per share	INDB	The Nasdaq Global Select Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes x    No  o

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Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  x    No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	x	Accelerated Filer	☐
Non-accelerated Filer	☐	Smaller Reporting Company	☐
		Emerging Growth Company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.) Yes ☐ No ☒

As of May 6, 2024, there were 42,465,754 shares of the issuer’s common stock outstanding, par value $0.01 per share.

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	PAGE
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (unaudited)
Consolidated Balance Sheets - March 31, 2024 and December 31, 2023	5
Consolidated Statements of Income - Three months ended March 31, 2024 and 2023	7
Consolidated Statements of Comprehensive Income -Three months ended March 31, 2024 and 2023	8
Consolidated Statements of Stockholders’ Equity - Three months ended March 31, 2024 and 2023	9
Consolidated Statements of Cash Flows - Three months ended March 31, 2024 and 2023	10
Notes to Consolidated Financial Statements - March 31, 2024
Note 1 - Basis of Presentation	12
Note 2 - Securities	12
Note 3 - Loans, Allowance for Credit Losses and Credit Quality	17
Note 4 - Borrowings	26
Note 5 - Stock Based Compensation	26
Note 6- Derivative and Hedging Activities	27
Note 7 - Fair Value Measurements	33
Note 8 - Revenue Recognition	40
Note 9 - Other Comprehensive Income (Loss)	43
Note 10 - Commitments and Contingencies	44
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	45
Table 1 - Closed Residential Real Estate Loans	56
Table 2 - Residential Mortgage Loan Sales	56
Table 3 - Mortgage Servicing Asset	57
Table 4 - Nonperforming Assets	62
Table 5 - Activity in Nonperforming Assets	62
Table 6 - Summary of Net Charge-Offs/(Recoveries) to Average Loans Outstanding	64
Table 7 - Summary of Allocation of Allowance for Credit Losses	65
Table 8 - Company and Bank’s Capital Amounts and Ratios	67
Table 9 - Assets Under Administration	68
Table 10 - Summary of Results of Operations	69
Table 11 - Average Balance, Interest Earned/Paid & Average Yields Quarter-to-Date	70
Table 12 - Volume Rate Analysis	72
Table 13 - Noninterest Income	73
Table 14 - Noninterest Expense	74
Table 15 - Tax Provision and Applicable Tax Rates	75
Table 16 - Liquidity Sources	77
Table 17 - Interest Rate Sensitivity	78

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Item 3. Quantitative and Qualitative Disclosures About Market Risk	80
Item 4. Controls and Procedures	80
PART II. OTHER INFORMATION	80
Item 1. Legal Proceedings	80
Item 1A. Risk Factors	80
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	80
Item 3. Defaults Upon Senior Securities	81
Item 4. Mine Safety Disclosures	81
Item 5. Other Information	81
Item 6. Exhibits	81
Signatures	82

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PART 1. FINANCIAL INFORMATION

Item 1. Financial Statements

INDEPENDENT BANK CORP.

CONSOLIDATED BALANCE SHEETS

(Unaudited—Dollars in thousands)

	March 31 2024		December 31 2023
Assets
Cash and due from banks	$	165,331	$	178,861
Interest-earning deposits with banks	55,985		45,469
Securities
Trading	4,759		4,987
Equity	22,858		22,510
Available for sale (amortized cost $1,402,389 and $1,459,862)	1,272,831		1,334,256
Held to maturity (fair value $1,383,621 and $1,417,608)	1,545,267		1,569,107
Total securities	2,845,715		2,930,860
Loans held for sale (at fair value)	11,340		6,368
Loans
Commercial and industrial	1,580,041		1,579,986
Commercial real estate	8,108,836		8,041,508
Commercial construction	828,900		849,586
Small business	261,690		251,956
Residential real estate	2,420,705		2,424,754
Home equity - first position	507,356		518,706
Home equity - subordinate positions	593,230		578,920
Other consumer	29,836		32,654
Total loans	14,330,594		14,278,070
Less: allowance for credit losses	(146,948)		(142,222)
Net loans	14,183,646		14,135,848
Federal Home Loan Bank stock	46,304		43,557
Bank premises and equipment, net	192,563		193,049
Goodwill	985,072		985,072
Other intangible assets	16,626		18,190
Cash surrender value of life insurance policies	298,352		297,387
Other assets	523,679		512,712
Total assets	$	19,324,613	$	19,347,373
Liabilities and Stockholders' Equity
Deposits
Noninterest-bearing demand deposits	$	4,469,820	$	4,567,083
Savings and interest checking accounts	5,196,195		5,298,913
Money market	2,944,221		2,818,072
Time certificates of deposit	2,432,985		2,181,479
Total deposits	15,043,221		14,865,547
Borrowings
Federal Home Loan Bank borrowings	962,535		1,105,541
Junior subordinated debentures (less unamortized debt issuance costs of $30 and $30)	62,858		62,858

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Subordinated debentures (less unamortized debt issuance costs of $20)	—		49,980
Total borrowings	1,025,393		1,218,379
Other liabilities	371,791		368,196
Total liabilities	16,440,405		16,452,122
Commitments and contingencies	—		—
Stockholders' equity
Preferred stock, $0.01 par value, authorized: 1,000,000 shares, outstanding: none	—		—
Common stock, $0.01 par value, authorized: 75,000,000 shares, issued and outstanding: 42,452,457 shares at March 31, 2024 and 42,873,187 shares at December 31, 2023 (includes 215,412 and 162,812 shares of unvested participating restricted stock awards, respectively)	422		427
Value of shares held in rabbi trust at cost: 82,042 shares at March 31, 2024 and 80,222 shares at December 31, 2023	(3,403)		(3,298)
Deferred compensation and other retirement benefit obligations	3,403		3,298
Additional paid in capital	1,902,063		1,932,163
Retained earnings	1,101,061		1,077,488
Accumulated other comprehensive loss, net of tax	(119,338)		(114,827)
Total stockholders’ equity	2,884,208		2,895,251
Total liabilities and stockholders' equity	$	19,324,613	$	19,347,373

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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INDEPENDENT BANK CORP.

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited—Dollars in thousands, except per share data)

	Three Months Ended
	March 31
	2024		2023
Interest income
Interest and fees on loans	$	193,226	$	170,926
Taxable interest and dividends on securities	14,231		15,309
Nontaxable interest and dividends on securities	1		1
Interest on loans held for sale	104		34
Interest on federal funds sold and short-term investments	483		665
Total interest and dividend income	208,045		186,935
Interest expense
Interest on deposits	54,320		22,675
Interest on borrowings	16,286		5,262
Total interest expense	70,606		27,937
Net interest income	137,439		158,998
Provision for credit losses	5,000		7,250
Net interest income after provision for credit losses	132,439		151,748
Noninterest income
Deposit account fees	6,228		5,916
Interchange and ATM fees	4,452		4,184
Investment management and advisory	9,941		9,779
Mortgage banking income	796		308
Increase in cash surrender value of life insurance policies	1,928		1,854
Gain on life insurance benefits	263		11
Loan level derivative income	80		408
Other noninterest income	6,255		5,782
Total noninterest income	29,943		28,242
Noninterest expenses
Salaries and employee benefits	57,174		56,975
Occupancy and equipment expenses	13,467		12,822
Data processing and facilities management	2,483		2,527
Consulting expense	1,428		2,077
Software and subscriptions	4,094		2,949
Debit card expense	2,478		2,171
Amortization of intangible assets	1,563		1,815
FDIC assessment	2,982		2,610
Other noninterest expenses	14,218		14,715
Total noninterest expenses	99,887		98,661
Income before income taxes	62,495		81,329
Provision for income taxes	14,725		20,082
Net income	$	47,770	$	61,247
Basic earnings per share	$	1.12	$	1.36
Diluted earnings per share	$	1.12	$	1.36
Weighted average common shares (basic)	42,553,714		45,004,100
Common share equivalents	12,876		19,564
Weighted average common shares (diluted)	42,566,590		45,023,664
Cash dividends declared per common share	$	0.57	$	0.55

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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INDEPENDENT BANK CORP.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited—Dollars in thousands)

	Three Months Ended
	March 31
	2024		2023
Net income	$	47,770	$	61,247
Other comprehensive (loss) income, net of tax
Net change in fair value of securities available for sale	(3,008)		17,068
Net change in fair value of cash flow hedges	(1,488)		10,163
Net change in other comprehensive income for defined benefit postretirement plans	(15)		(92)
Total other comprehensive (loss) income	(4,511)		27,139
Total comprehensive income	$	43,259	$	88,386

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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INDEPENDENT BANK CORP.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

Three Months Ended March 31, 2024 and 2023

(Unaudited—Dollars in thousands, except per share data)

	Common Stock Outstanding	Common Stock		Value of Shares Held in Rabbi  Trust at Cost		Deferred Compensation Obligation		Additional Paid in Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total
Balance December 31, 2023	42,873,187	$	427	$	(3,298)	$	3,298	$	1,932,163	$	1,077,488	$	(114,827)	$	2,895,251
Net income	—	—		—		—		—		47,770		—		47,770
Other comprehensive loss	—	—		—		—		—		—		(4,511)		(4,511)
Common dividend declared ($0.57 per share)	—	—		—		—		—		(24,197)		—		(24,197)
Stock based compensation	—	—		—		—		1,300		—		—		1,300
Restricted stock awards issued, net of awards surrendered	101,245	—		—		—		(766)		—		—		(766)
Shares issued under direct stock purchase plan	10,291	—		—		—		658		—		—		658
Shares repurchased under share repurchase program (1)	(532,266)	(5)		—		—		(31,292)		—		—		(31,297)
Deferred compensation and other retirement benefit obligations	—	—		(105)		105		—		—		—		—
Balance March 31, 2024	42,452,457	$	422	$	(3,403)	$	3,403	$	1,902,063	$	1,101,061	$	(119,338)	$	2,884,208
Balance December 31, 2022	45,641,238	$	455	$	(3,227)	$	3,227	$	2,114,888	$	934,442	$	(163,084)	$	2,886,701
Net income	—	—		—		—		—		61,247		—		61,247
Other comprehensive income	—	—		—		—		—		—		27,139		27,139
Common dividend declared ($0.55 per share)	—	—		—		—		—		(24,351)		—		(24,351)
Proceeds from exercise of stock options, net of cash paid	1,666	—		—		—		80		—		—		80
Stock based compensation	—	—		—		—		1,672		—		—		1,672
Restricted stock awards issued, net of awards surrendered	81,075	—		—		—		(1,110)		—		—		(1,110)
Shares issued under direct stock purchase plan	7,881	—		—		—		642		—		—		642
Shares repurchased under share repurchase program (1)	(1,617,033)	(16)		—		—		(121,095)		—		—		(121,111)
Deferred compensation and other retirement benefit obligations	—	—		(59)		59		—		—		—		—
Balance March 31, 2023	44,114,827	$	439	$	(3,286)	$	3,286	$	1,995,077	$	971,338	$	(135,945)	$	2,830,909

(1)     Inclusive of $278,000 and $1.2 million impact of excise tax attributable to shares repurchased under the share repurchase program during the three months ended March 31, 2024 and March 31, 2023, respectively.

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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INDEPENDENT BANK CORP.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited—Dollars in thousands)

	Three Months Ended
	March 31
	2024		2023
Cash flow from operating activities
Net income	$	47,770	$	61,247
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	10,289		9,633
Change in unamortized net loan costs and fees	(270)		(529)
Accretion of acquired loans	(147)		(305)
Provision for credit losses	5,000		7,250
Deferred income tax expense	2,584		644
Net gain on equity securities	(609)		(368)
Net loss on bank premises and equipment	12		79
Realized gain on sale leaseback transaction	—		(145)
Stock based compensation	1,300		1,672
Increase in cash surrender value of life insurance policies	(1,928)		(1,854)
Gain on life insurance benefits	(263)		(11)
Operating lease payments	(3,447)		(3,432)
Operating lease termination payments	(389)		—
Change in fair value on loans held for sale	(70)		17
Net change in:
Trading assets	228		(581)
Loans held for sale	(4,902)		1,656
Other assets	(1,025)		17,337
Other liabilities	(2,988)		(40,844)
Total adjustments	3,375		(9,781)
Net cash provided by operating activities	51,145		51,466
Cash flows provided by (used in) investing activities
Purchases of equity securities	(165)		(136)
Proceeds from maturities and principal repayments of securities available for sale	57,399		15,694
Proceeds from maturities and principal repayments of securities held to maturity	24,861		27,877
Net purchases of Federal Home Loan Bank stock	(2,747)		(35,085)
Investments in low income housing projects	(6,519)		(13,669)
Purchases of life insurance policies	(91)		(91)
Net increase in loans	(52,381)		(18,981)
Purchases of bank premises and equipment	(4,464)		(4,219)
Proceeds from the sale of bank premises and equipment	22		52
Net cash provided by (used in) investing activities	15,915		(28,558)
Cash flows (used in) provided by financing activities
Net increase in time deposits	251,465		259,590
Net decrease in other deposits	(73,832)		(866,445)
Net (repayments of) advances from Federal Home Loan Bank borrowings	(143,000)		879,000
Repayments of subordinated debentures	(50,000)		—
Net proceeds from exercise of stock options	—		80

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Restricted stock awards issued, net of awards surrendered	(792)		(1,110)
Proceeds from shares issued under direct stock purchase plan	651		642
Payments for shares repurchased under share repurchase program	(30,986)		(119,951)
Common dividends paid	(23,580)		(25,103)
Net cash (used in) provided by financing activities	(70,074)		126,703
Net (decrease) increase in cash and cash equivalents	(3,014)		149,611
Cash and cash equivalents at beginning of year	224,330		352,933
Cash and cash equivalents at end of period	$	221,316	$	502,544
Supplemental schedule of noncash investing and financing activities
Net increase in capital commitments relating to low income housing project investments	$	8,308	$	564
Recognition of operating lease at commencement and/or at extension	$	1,434	$	2,642

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1 - BASIS OF PRESENTATION

Independent Bank Corp. (the “Company”) is a state chartered, federally registered bank holding company, incorporated in 1985. The Company is the sole stockholder of Rockland Trust Company (“Rockland Trust” or the “Bank”), a Massachusetts trust company chartered in 1907.

All material intercompany balances and transactions have been eliminated in consolidation. Certain previously reported amounts have been reclassified to conform to the current year’s presentation.

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. Results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any other interim period.

For further information, refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the Securities and Exchange Commission (the "2023 Form 10-K").

NOTE 2 - SECURITIES

Trading Securities

The Company had trading securities of $4.8 million and $5.0 million as of March 31, 2024 and December 31, 2023, respectively. These securities are held in a rabbi trust and will be used for future payments associated with the Company’s non-qualified 401(k) Restoration Plan and Non-qualified Deferred Compensation Plan.

Equity Securities

The Company had equity securities of $22.9 million and $22.5 million as of March 31, 2024 and December 31, 2023, respectively. These securities consist primarily of mutual funds held in a rabbi trust and will be used for future payments associated with the Company’s supplemental executive retirement plans.

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The following table represents a summary of the gains and losses recognized within non-interest income and non-interest expense within the consolidated statements of income that relate to equity securities for the periods indicated:

	Three Months Ended
	March 31
	2024		2023
	Dollars in thousands
Net gains recognized during the period on equity securities	$	609	$	368
Less: net gains recognized during the period on equity securities sold during the period	435		1
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	174	$	367

Available for Sale Securities

The following table summarizes the amortized cost, allowance for credit losses, and fair value of available for sale securities and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) at the dates indicated:

	March 31, 2024										December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value
	(Dollars in thousands)
U.S. government agency securities	$	230,013	$	—	$	(24,337)	$	—	$	205,676	$	230,198	$	—	$	(23,060)	$	—	$	207,138
U.S. treasury securities	774,714		—		(55,876)		—		718,838		824,597		—		(55,495)		—		769,102
Agency mortgage-backed securities	309,560		25		(38,980)		—		270,605		314,269		24		(37,246)		—		277,047
Agency collateralized mortgage obligations	34,644		—		(2,556)		—		32,088		35,713		6		(2,530)		—		33,189
State, county, and municipal securities	195		—		(4)		—		191		195		—		(5)		—		190
Pooled trust preferred securities issued by banks and insurers	1,180		—		(144)		—		1,036		1,188		—		(170)		—		1,018
Small business administration pooled securities	52,083		—		(7,686)		—		44,397		53,702		—		(7,130)		—		46,572
Total available for sale securities	$	1,402,389	$	25	$	(129,583)	$	—	$	1,272,831	$	1,459,862	$	30	$	(125,636)	$	—	$	1,334,256

Excluded from the table above is accrued interest on available for sale securities of $3.8 million and $3.4 million at March 31, 2024 and December 31, 2023, respectively, which is included within other assets on the consolidated balance sheets. Additionally, the Company did not record any write-offs of accrued interest income on available for sale securities during the three months ended March 31, 2024 and 2023. Furthermore, no securities held by the Company were delinquent on contractual payments nor were any securities placed on non-accrual status at March 31, 2024 and December 31, 2023.

When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The Company had no sales of securities available for sale during three months ended March 31, 2024 and 2023, and therefore no gains or losses were realized during the periods presented.

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The following tables show the gross unrealized losses and fair value of the Company’s available for sale securities in an unrealized loss position as of the dates indicated. These available for sale securities are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position:

	March 31, 2024
		Less than 12 months				12 months or longer				Total
	# of  holdings	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
U.S. government agency securities	9	$	—	$	—	$	205,676	$	(24,337)	$	205,676	$	(24,337)
U.S. treasury securities	16	—		—		718,838		(55,876)		718,838		(55,876)
Agency mortgage-backed securities	125	857		(8)		267,985		(38,972)		268,842		(38,980)
Agency collateralized mortgage obligations	12	1,075		(11)		31,013		(2,545)		32,088		(2,556)
State, county, and municipal securities	1	191		(4)		—		—		191		(4)
Pooled trust preferred securities issued by banks and insurers	1	—		—		1,036		(144)		1,036		(144)
Small business administration pooled securities	8	—		—		44,397		(7,686)		44,397		(7,686)
Total	172	$	2,123	$	(23)	$	1,268,945	$	(129,560)	$	1,271,068	$	(129,583)
	December 31, 2023
		Less than 12 months				12 months or longer				Total
	# of  holdings	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
U.S. government agency securities	9	$	—	$	—	$	207,138	$	(23,060)	$	207,138	$	(23,060)
U.S. treasury securities	17	—		—		769,102		(55,495)		769,102		(55,495)
Agency mortgage-backed securities	115	1,091		(11)		273,447		(37,235)		274,538		(37,246)
Agency collateralized mortgage obligations	12	339		(2)		31,682		(2,528)		32,021		(2,530)
State, county, and municipal securities	1	190		(5)		—		—		190		(5)
Pooled trust preferred securities issued by banks and insurers	1	—		—		1,018		(170)		1,018		(170)
Small business administration pooled securities	8	—		—		46,572		(7,130)		46,572		(7,130)
Total	163	$	1,620	$	(18)	$	1,328,959	$	(125,618)	$	1,330,579	$	(125,636)

The Company does not intend to sell these investments and has determined, based upon available evidence, that it is more likely than not that the Company will not be required to sell each security before the recovery of its amortized cost basis. In addition, management does not believe that any of the securities are impaired due to reasons of credit quality. As a result, the Company did not recognize a provision for credit losses on these investments during the three months ended March 31, 2024 and 2023. The Company made this determination by reviewing various qualitative and quantitative factors regarding each investment category, such as current market conditions, extent and nature of changes in fair value, issuer rating changes and trends, volatility of earnings, and current analysts’ evaluations.

As a result of the Company’s review of these qualitative and quantitative factors, the causes of the impairments listed in the table above by category were as follows at March 31, 2024:

•U.S. Government Agency Securities, U.S. Treasury Securities, Agency Mortgage-Backed Securities, Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities: These portfolios have contractual terms that generally do not permit the issuer to settle the securities at a price less than the current par value of the investment. The decline in market value of these securities is attributable to changes in interest rates and not credit quality. Additionally, these securities are implicitly guaranteed by the U.S. Government or one of its agencies.

•State, County and Municipal Securities: This portfolio has contractual terms that generally do not permit the issuer

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to settle the securities at a price less than the current par value of the investment. The decline in market value of

these securities is attributable to changes in interest rates and not credit quality.

•Pooled Trust Preferred Securities: This portfolio consists of one security which is performing. The unrealized loss on this security is attributable to the illiquid nature of the trust preferred market in the current economic and regulatory environment. Management evaluates collateral credit and instrument structure, including current and expected deferral and default rates and timing. In addition, discount rates are determined by evaluating comparable spreads observed currently in the market for similar instruments.

Held to Maturity Securities

The following table summarizes the amortized cost, fair value and allowance for credit losses of held to maturity securities and the corresponding amounts of gross unrealized gains and losses recognized at the dates indicated:

	March 31, 2024										December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value
	(Dollars in thousands)
U.S. government agency securities	$	29,086	$	—	$	(843)	$	—	$	28,243	$	29,521	$	—	$	(1,113)	$	—	$	28,408
U.S. treasury securities	100,732		—		(9,922)		—		90,810		100,712		—		(9,177)		—		91,535
Agency mortgage-backed securities	819,912		61		(71,372)		—		748,601		829,431		175		(65,878)		—		763,728
Agency collateralized mortgage obligations	465,016		—		(71,758)		—		393,258		477,517		—		(69,606)		—		407,911
Single issuer trust preferred securities issued by banks	1,500		—		(128)		—		1,372		1,500		—		(127)		—		1,373
Small business administration pooled securities	129,021		—		(7,684)		—		121,337		130,426		384		(6,157)		—		124,653
Total held to maturity securities	$	1,545,267	$	61	$	(161,707)	$	—	$	1,383,621	$	1,569,107	$	559	$	(152,058)	$	—	$	1,417,608

Substantially all held to maturity securities held by the Company are guaranteed by the U.S. federal government or other government sponsored agencies and have a long history of no credit losses. As a result, management has determined these securities to have a zero loss expectation and therefore the Company did not record a provision for estimated credit losses on any held to maturity securities during the three months ended March 31, 2024 and 2023. Excluded from the table above is accrued interest on held to maturity securities of $4.5 million and $4.3 million at March 31, 2024 and December 31, 2023, respectively, which is included within other assets on the consolidated balance sheets. Additionally, the Company did not record any write-offs of accrued interest income on held to maturity securities during the three months ended March 31, 2024 and 2023. Furthermore, no securities held by the Company were delinquent on contractual payments nor were any securities placed on non-accrual status at March 31, 2024 and December 31, 2023.

When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The Company had no sales of held to maturity securities during the three months ended March 31, 2024 and 2023, and therefore no gains or losses were realized for such periods.

The Company monitors the credit quality of held to maturity securities through the use of credit ratings. Credit ratings are monitored by the Company on at least a quarterly basis. As of March 31, 2024, all held to maturity securities held by the Company were rated investment grade or higher.

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The actual maturities of certain available for sale or held to maturity securities may differ from the contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. A schedule of the contractual maturities of securities available for sale and securities held to maturity at March 31, 2024 is presented below:

	Due in one year or less				Due after one year to five years				Due after five to ten years				Due after ten years				Total
	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(Dollars in thousands)
Available for sale securities
U.S. government agency securities	$	—	$	—	$	199,221	$	178,800	$	30,792	$	26,876	$	—	$	—	$	230,013	$	205,676
U.S. treasury securities	197,408		192,434		577,306		526,404		—		—		—		—		774,714		718,838
Agency mortgage-backed securities	1		1		140,616		125,614		43,861		38,155		125,082		106,835		309,560		270,605
Agency collateralized mortgage obligations	—		—		—		—		2,837		2,586		31,807		29,502		34,644		32,088
State, county, and municipal securities	—		—		195		191		—		—		—		—		195		191
Pooled trust preferred securities issued by banks and insurers	—		—		—		—		—		—		1,180		1,036		1,180		1,036
Small business administration pooled securities	—		—		—		—		—		—		52,083		44,397		52,083		44,397
Total available for sale securities	$	197,409	$	192,435	$	917,338	$	831,009	$	77,490	$	67,617	$	210,152	$	181,770	$	1,402,389	$	1,272,831
Held to maturity securities
U.S. government agency securities	$	29,086	$	28,243	$	—	$	—	$	—	$	—	$	—	$	—	$	29,086	$	28,243
U.S. treasury securities	—		—		99,740		89,992		992		818		—		—		100,732		90,810
Agency mortgage-backed securities	—		—		448,783		414,620		181,710		159,656		189,419		174,325		819,912		748,601
Agency collateralized mortgage obligations	—		—		63,456		58,528		19,228		16,930		382,332		317,800		465,016		393,258
Single issuer trust preferred securities issued by banks	—		—		1,500		1,372		—		—		—		—		1,500		1,372
Small business administration pooled securities	—		—		—		—		7,688		7,048		121,333		114,289		129,021		121,337
Total held to maturity securities	$	29,086	$	28,243	$	613,479	$	564,512	$	209,618	$	184,452	$	693,084	$	606,414	$	1,545,267	$	1,383,621
Total	$	226,495	$	220,678	$	1,530,817	$	1,395,521	$	287,108	$	252,069	$	903,236	$	788,184	$	2,947,656	$	2,656,452

Included in the table above are $25.5 million of callable securities at March 31, 2024.

The carrying value of securities pledged to secure public funds, trust deposits, and for other purposes, as required or permitted by law, was $1.6 billion and $1.7 billion at March 31, 2024 and December 31, 2023, respectively.

At March 31, 2024 and December 31, 2023, the Company had no investments in obligations of individual states, counties, or municipalities which exceeded 10% of consolidated stockholders’ equity.

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NOTE 3 - LOANS, ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY

Loans Held for Investment and Allowance for Credit Losses

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 March 31, 2024
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home  Equity		Other Consumer		Total
Allowance for credit losses
Beginning balance	$	19,243	$	74,148	$	7,683	$	3,963	$	23,637	$	12,797	$	751	$	142,222
Charge-offs	—		—		—		(109)		—		—		(772)		(881)
Recoveries	85		—		—		39		—		133		350		607
Provision for (release of) credit losses	1,161		3,781		(110)		135		543		(888)		378		5,000
Ending balance (1)	$	20,489	$	77,929	$	7,573	$	4,028	$	24,180	$	12,042	$	707	$	146,948
	Three Months Ended March 31, 2023
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home  Equity		Other Consumer		Total
Allowance for credit losses
Beginning balance	$	27,559	$	77,799	$	10,762	$	2,834	$	20,973	$	11,504	$	988	$	152,419
Charge-offs	(281)		—		—		(28)		—		—		(506)		(815)
Recoveries	5		—		—		31		—		16		225		277
Provision for (release of) credit losses	9,649		(1,601)		(1,514)		501		(519)		908		(174)		7,250
Ending balance (1)	$	36,932	$	76,198	$	9,248	$	3,338	$	20,454	$	12,428	$	533	$	159,131

(1)Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $59.3 million and $52.7 million as of March 31, 2024 and March 31, 2023, respectively.

The balance of allowance for credit losses increased to $146.9 million as of March 31, 2024 compared to $142.2 million at December 31, 2023, driven primarily by specific reserve allocations as well as net loan growth during the three months ended March 31, 2024.

For the purpose of estimating the allowance for credit losses, management segregated the loan portfolio into the portfolio segments detailed in the above tables.  Each of these loan categories possesses unique risk characteristics that are considered when determining the appropriate level of allowance for each segment.  Some of the characteristics unique to each loan category include:

Commercial Portfolio

•Commercial and Industrial: Consists of revolving, nonrevolving, and term loan obligations extended to business and corporate enterprises for the purpose of financing working capital and/or capital investment.  Collateral generally consists of accounts receivable, inventory, plant and equipment, real estate, or other business assets. The primary source of repayment is operating cash flow and, secondarily, liquidation of assets.

•Commercial Real Estate: Consists of mortgage loans to finance investment in real property such as multi-family residential, commercial/retail, office, industrial, hotels, educational and healthcare facilities, as well as other specific use properties and is inclusive of owner-occupied commercial properties.  Loans are typically written with amortizing payment structures.  Collateral values are determined based upon third party appraisals and evaluations.  Permissible loan to value ratios at origination are governed by Company policy and regulatory guidelines. The primary source of repayment is cash flow from operating leases and rents and, secondarily, liquidation of assets.

•Commercial Construction: Consists of short-term construction loans, revolving and nonrevolving credit lines and construction/permanent loans to finance the acquisition, development and construction or rehabilitation of real property. 

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Project types include residential land development, one-to-four family, condominium, and multi-family home construction, commercial/retail, office, industrial, hotels, educational and healthcare facilities as well as other specific use properties.  Loans may be written with non-amortizing or hybrid payment structures depending upon the type of project.  Collateral values are determined based upon third party appraisals and evaluations.  Permissible loan to value ratios at origination are governed by Company policy and regulatory guidelines.  Repayment sources vary depending upon the type of project and may consist of proceeds from the sale or lease of units, operating cash flows or liquidation of other assets.

•Small Business: Consists of revolving, term loan and mortgage obligations extended to sole proprietors and small businesses for purposes of financing working capital and/or capital investment.  Collateral generally consists of pledges of business assets including, but not limited to, accounts receivable, inventory, plant and equipment, or real estate if applicable.  The primary source of repayment is operating cash flows and, secondarily, liquidation of assets.

For the commercial portfolio the Company typically obtains personal guarantees for payment from individuals holding material ownership interests in the borrowing entities.

Consumer Portfolio

•Residential Real Estate: Residential mortgage loans held in the Company’s portfolio are made to borrowers who demonstrate the ability to make scheduled payments with full consideration to underwriting factors such as current and expected income, employment status, current assets, other financial resources, credit history and the value of the collateral.  Collateral consists of mortgage liens on one-to-four family residential properties.  Residential mortgage loans also include loans to construct owner-occupied one-to-four family residential properties.

•Home Equity: Home equity loans and credit lines are made to qualified individuals and are primarily secured by senior or junior mortgage liens on one-to-four family homes, condominiums or vacation homes. Each home equity loan has a fixed rate and is billed in equal payments comprised of principal and interest. The majority of home equity lines of credit have a variable rate and are billed in interest-only payments during the draw period. At the end of the draw period, the home equity line of credit is billed as a percentage of the then outstanding principal balance plus all accrued interest over a predetermined repayment period, as set forth in the note. Additionally, the Company has the option of renewing each line of credit for additional draw periods.  Borrower qualifications include favorable credit history combined with supportive income requirements and combined loan to value ratios within established policy guidelines.

•Other Consumer: Other consumer loan products include personal lines of credit and amortizing loans made to qualified individuals for various purposes such as debt consolidation, personal expenses or overdraft protection.  Borrower qualifications include favorable credit history combined with supportive income and collateral requirements within established policy guidelines.  These loans may be secured or unsecured.

Credit Quality

The Company continually monitors the asset quality of the loan portfolio using all available information. Based on this information, loans demonstrating certain payment issues or other weaknesses may be categorized as adversely risk-rated, delinquent, nonperforming and/or put on nonaccrual status. Additionally, in the course of resolving such loans, the Company may choose to modify the contractual terms of certain loans to match the borrower’s ability to repay the loan based on their current financial condition.

The Company reviews numerous credit quality indicators when assessing the risk in its loan portfolio. For the commercial portfolio, the Company utilizes a 10-point credit risk-rating system, which assigns a risk-grade to each loan obligation based on a number of quantitative and qualitative factors associated with a commercial or small business loan transaction. Factors considered include industry and market conditions, position within the industry, earnings trends, operating cash flow, asset/liability values, debt capacity, guarantor strength, management and controls, financial reporting, collateral, and other considerations. The risk-rating categories for the commercial portfolio are defined as follows:

•Pass: Risk-rating “1” through “6” comprises loans ranging from ‘Substantially Risk Free’ which indicates borrowers are of unquestioned credit standing and the pinnacle of credit quality, well established companies with a very strong financial condition, and loans fully secured by cash collateral, through ‘Acceptable Risk,’ which indicates borrowers may exhibit declining earnings, strained cash flow, increasing or above average leverage and/or weakening market fundamentals that indicate below average asset quality, margins and market share. Collateral coverage is protective.

•Special Mention: Borrowers exhibit potential credit weaknesses or downward trends deserving management’s close attention. If not checked or corrected, these trends will weaken the Company’s asset and position. While potentially weak, currently these borrowers are marginally acceptable; no loss of principal or interest is envisioned.

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•Substandard: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt. Loans may be inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy, although no loss of principal is envisioned. However, there is a distinct possibility that a partial loss of interest and/or principal will occur if the deficiencies are not corrected. Collateral coverage may be inadequate to cover the principal obligation.

•Doubtful: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt with the added provision that the weaknesses make collection of the debt in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Serious problems exist to the point where partial loss of principal is likely.

•Loss: Borrowers deemed incapable of repayment. Loans to such borrowers are considered uncollectible and of such little value that continuation as active assets of the Company is not warranted.

The Company utilizes a comprehensive, continuous strategy for evaluating and monitoring commercial credit quality. Initially, credit quality is determined at loan origination and is re-evaluated when subsequent actions, such as renewals, modifications or reviews, occur. Actively managed commercial borrowers are required to provide updated financial information at least annually which is carefully evaluated for any changes in credit quality. Larger loan relationships are subject to a full annual credit review by experienced credit professionals, while continuous portfolio monitoring techniques are employed to evaluate changes in credit quality for smaller loan relationships. Any changes in credit quality are reflected in risk-rating changes. Additionally, the Company retains an independent loan review firm to evaluate the credit quality of the commercial loan portfolio. The independent loan review process achieves significant penetration into the commercial loan portfolio and reports the results of these reviews to the Audit Committee of the Board of Directors on a quarterly basis.

For the Company’s consumer portfolio, the quality of the loan is best indicated by the repayment performance of an individual borrower. As a result, for this portfolio the Company utilizes a pass/default risk-rating system, based on an age analysis (i.e., days past due) associated with each consumer loan. Under this structure, consumer loans less than 90 days past due are assigned a "pass" rating, while any consumer loans 90 days or more past due are assigned a "default" rating.

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:

	March 31, 2024
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving converted to Term		Total (1)
	(Dollars in thousands)
Commercial and industrial
Pass	$	159,082	$	223,301	$	148,288	$	73,012	$	60,865	$	146,495	$	685,258	$	—	$	1,496,301
Special mention	3,160		3,254		1,843		322		9,206		4,024		31,525		—		53,334
Substandard	1,809		—		57		198		—		43		28,299		—		30,406
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial and industrial	$	164,051	$	226,555	$	150,188	$	73,532	$	70,071	$	150,562	$	745,082	$	—	$	1,580,041
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial real estate
Pass	$	193,152	$	1,127,417	$	1,201,044	$	1,304,867	$	1,212,201	$	2,562,542	$	93,048	$	248	$	7,694,519
Special mention	—		61,943		38,590		53,837		44,806		124,614		297		—		324,087
Substandard	6,350		27,358		18,046		22,758		3,894		3,973		—		—		82,379
Doubtful	—		—		—		—		—		7,851		—		—		7,851
Loss	—		—		—		—		—		—		—		—		—
Total commercial real estate	$	199,502	$	1,216,718	$	1,257,680	$	1,381,462	$	1,260,901	$	2,698,980	$	93,345	$	248	$	8,108,836
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial construction
Pass	$	97,558	$	164,784	$	336,768	$	100,371	$	7,971	$	25,184	$	19,398	$	676	$	752,710
Special mention	3,326		18,724		—		5,618		—		—		—		—		27,668

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Substandard	10,585		—		18,601		19,336		—		—		—		—		48,522
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial construction	$	111,469	$	183,508	$	355,369	$	125,325	$	7,971	$	25,184	$	19,398	$	676	$	828,900
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Small business
Pass	$	14,707	$	49,885	$	48,880	$	37,682	$	23,538	$	33,246	$	49,943	$	—	$	257,881
Special mention	—		59		5		75		152		182		481		—		954
Substandard	180		520		224		87		461		658		725		—		2,855
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total small business	$	14,887	$	50,464	$	49,109	$	37,844	$	24,151	$	34,086	$	51,149	$	—	$	261,690
Current-period gross write-offs	$	—	$	—	$	28	$	—	$	—	$	—	$	81	$	—	$	109
Residential real estate
Pass	$	29,922	$	497,477	$	633,135	$	399,440	$	183,544	$	674,298	$	—	$	—	$	2,417,816
Default	—		—		—		—		—		2,889		—		—		2,889
Total residential real estate	$	29,922	$	497,477	$	633,135	$	399,440	$	183,544	$	677,187	$	—	$	—	$	2,420,705
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Home equity
Pass	$	4,208	$	27,517	$	37,162	$	54,001	$	48,389	$	145,029	$	778,842	$	3,736	$	1,098,884
Default	—		—		83		—		—		170		1,214		235		1,702
Total home equity	$	4,208	$	27,517	$	37,245	$	54,001	$	48,389	$	145,199	$	780,056	$	3,971	$	1,100,586
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other consumer (2)
Pass	$	66	$	586	$	216	$	981	$	539	$	1,725	$	25,723	$	—	$	29,836
Default	—		—		—		—		—		—		—		—		—
Total other consumer	$	66	$	586	$	216	$	981	$	539	$	1,725	$	25,723	$	—	$	29,836
Current-period gross write-offs	$	763	$	—	$	—	$	—	$	—	$	—	$	9	$	—	$	772
Total	$	524,105	$	2,202,825	$	2,482,942	$	2,072,585	$	1,595,566	$	3,732,923	$	1,714,753	$	4,895	$	14,330,594
Total current-period gross write-offs	$	763	$	—	$	28	$	—	$	—	$	—	$	90	$	—	$	881

	March 31, 2023
	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving converted to Term		Total (1)
	(Dollars in thousands)
Commercial and industrial
Pass	$	153,554	$	262,933	$	122,770	$	94,702	$	54,925	$	85,391	$	811,795	$	—	$	1,586,070
Special mention	—		4,712		705		868		1,608		1,342		24,114		—		33,349
Substandard	—		2,295		1,516		164		377		1		2,936		—		7,289
Doubtful	—		—		—		—		—		—		23,174		—		23,174
Loss	—		—		—		—		—		—		—		—		—
Total commercial and industrial	$	153,554	$	269,940	$	124,991	$	95,734	$	56,910	$	86,734	$	862,019	$	—	$	1,649,882
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	34	$	247	$	—	$	281
Commercial real estate
Pass	$	204,462	$	1,199,328	$	1,459,526	$	1,259,511	$	720,208	$	2,439,424	$	59,810	$	—	$	7,342,269
Special mention	154		52,961		67,200		29,611		13,139		225,673		—		—		388,738

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Substandard	3,481		39,208		13,205		5,334		4,038		23,821		—		—		89,087
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial real estate	$	208,097	$	1,291,497	$	1,539,931	$	1,294,456	$	737,385	$	2,688,918	$	59,810	$	—	$	7,820,094
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial construction
Pass	$	90,362	$	461,824	$	266,758	$	89,919	$	62,033	$	4,755	$	21,237	$	—	$	996,888
Special mention	18,431		—		5,889		3,919		—		—		—		—		28,239
Substandard	7,619		11,434		2,130		—		—		—		—		—		21,183
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial construction	$	116,412	$	473,258	$	274,777	$	93,838	$	62,033	$	4,755	$	21,237	$	—	$	1,046,310
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Small business
Pass	$	9,770	$	54,258	$	43,458	$	29,810	$	16,173	$	26,536	$	42,746	$	—	$	222,751
Special mention	—		—		—		158		—		228		527		—		913
Substandard	105		126		113		304		3		686		865		—		2,202
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total small business	$	9,875	$	54,384	$	43,571	$	30,272	$	16,176	$	27,450	$	44,138	$	—	$	225,866
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	28	$	—	$	28
Residential real estate
Pass	$	91,404	$	658,273	$	416,067	$	190,313	$	92,927	$	644,659	$	—	$	—	$	2,093,643
Default	—		—		—		472		157		1,372		—		—		2,001
Total residential real estate	$	91,404	$	658,273	$	416,067	$	190,785	$	93,084	$	646,031	$	—	$	—	$	2,095,644
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Home equity
Pass	$	6,812	$	42,352	$	58,830	$	53,565	$	31,341	$	139,472	$	756,103	$	937	$	1,089,412
Default	—		—		—		—		122		82		1,139		—		1,343
Total home equity	$	6,812	$	42,352	$	58,830	$	53,565	$	31,463	$	139,554	$	757,242	$	937	$	1,090,755
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other consumer (2)
Pass	$	60	$	386	$	1,168	$	926	$	514	$	1,852	$	14,450	$	—	$	19,356
Default	—		—		—		—		6		37		2		—		45
Total other consumer	$	60	$	386	$	1,168	$	926	$	520	$	1,889	$	14,452	$	—	$	19,401
Current-period gross write-offs	$	498	$	—	$	—	$	—	$	—	$	—	$	8	$	—	$	506
Total	$	586,214	$	2,790,090	$	2,459,335	$	1,759,576	$	997,571	$	3,595,331	$	1,758,898	$	937	$	13,947,952
Total current -period gross write-offs	$	498	$	—	$	—	$	—	$	—	$	34	$	283	$	—	$	815

(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.

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    For the Company’s consumer portfolio, the quality of the loan is best indicated by the repayment performance of an individual borrower. However, the Company does supplement performance data with current Fair Isaac Corporation (“FICO”) scores and Loan to Value (“LTV”) estimates. Current FICO data is purchased and appended to all consumer loans on a regular basis. In addition, automated valuation services and broker opinions of value are used to supplement original value data for the residential real estate and home equity portfolios, periodically. The following table shows the weighted average FICO scores and the weighted average combined LTV ratios at the dates indicated below:

	March 31 2024		December 31 2023
Residential real estate portfolio
FICO score (re-scored)(1)	755		754
LTV (re-valued)(2)	59.7	%	59.8	%
Home equity portfolio
FICO score (re-scored)(1)	770		770
LTV (re-valued)(2)(3)	43.9	%	43.3	%

(1)The average FICO scores at March 31, 2024 are based upon rescores from March 2024 as available for previously originated loans, or origination score data for loans booked in March 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 March 31, 2024 are based upon updated automated valuations as of February 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.

Unfunded Commitments

Management evaluates the need for a reserve on unfunded lending commitments in a manner consistent with loans held for investment. At March 31, 2024 and December 31, 2023, the Company's estimated reserve for unfunded commitments amounted to $1.5 million and $1.3 million, respectively.

Asset Quality

The Company’s philosophy toward managing its loan portfolios is predicated upon careful monitoring, which stresses early detection and response to delinquent and default situations. Delinquent loans are managed by a team of collection specialists and the Company seeks to make arrangements to resolve any delinquent or default situation over the shortest possible time frame.  As a general rule, loans 90 days or more past due with respect to principal or interest are classified as nonaccrual loans. The Company also may use discretion regarding other loans 90 days or more delinquent if the loan is well secured and/or in process of collection.

The following table shows information regarding nonaccrual loans as of the dates indicated:

	Nonaccrual Balances
	March 31, 2024						December 31, 2023
	With Allowance for Credit Losses		Without Allowance for Credit Losses (1)		Total		With Allowance for Credit Losses		Without Allowance for Credit Losses (1)		Total
	(Dollars in thousands)
Commercial and industrial	$	17,640	$	—	$	17,640	$	19,890	$	298	$	20,188
Commercial real estate	16,361		7,852		24,213		11,911		11,041		22,952
Small business	316		—		316		394		4		398
Residential real estate	9,947		—		9,947		7,634		—		7,634
Home equity	4,805		—		4,805		3,171		—		3,171
Other consumer	20		—		20		40		—		40
Total nonaccrual loans	$	49,089	$	7,852	$	56,941	$	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.

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It is the Company's policy to reverse any accrued interest when a loan is put on nonaccrual status, and, as such, the Company did not record any interest income on nonaccrual loans during the three months ended March 31, 2024 and 2023, respectively, except for instances where nonaccrual loans were paid off in excess of the recorded book balance. Total accrued interest reversed against interest income amounted to $385,000 and $80,000 for the three months ended March 31, 2024 and 2023, respectively.

The following table shows information regarding foreclosed residential real estate property at the dates indicated:

	March 31, 2024		December 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	$	1,900	$	1,697

The following tables show the age analysis of past due financing receivables as of the dates indicated:

	March 31, 2024
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables (2)		Amortized Cost >90 Days and  Accruing
	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	8	$	743	2	$	85	2	$	17,555	12	$	18,383	$	1,561,658	$	1,580,041	$	—
Commercial real estate	10	20,582		—	—		5	24,056		15	44,638		8,064,198		8,108,836		—
Commercial construction	1	1,019		—	—		—	—		1	1,019		827,881		828,900		—
Small business	17	539		6	321		1	5		24	865		260,825		261,690		—
Residential real estate	14	3,482		3	248		16	2,641		33	6,371		2,414,334		2,420,705		—
Home equity	17	1,200		3	89		15	1,702		35	2,991		1,097,595		1,100,586		—
Other consumer (1)	415	238		14	31		—	—		429	269		29,567		29,836		—
Total	482	$	27,803	28	$	774	39	$	45,959	549	$	74,536	$	14,256,058	$	14,330,594	$	—

	December 31, 2023
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables (2)		Amortized Cost >90 Days and  Accruing
	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	6	$	398	1	$	17,538	2	$	673	9	$	18,609	$	1,561,377	$	1,579,986	$	—
Commercial real estate	8	14,674		2	8,419		3	7,279		13	30,372		8,011,136		8,041,508		—
Commercial construction	—	—		—	—		—	—		—	—		849,586		849,586		—
Small business	6	400		1	20		6	243		13	663		251,293		251,956		—
Residential real estate	24	6,216		7	2,187		13	1,573		44	9,976		2,414,778		2,424,754		—
Home equity	23	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		—
Total	480	$	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 $5.7 million and $6.4 million at March 31, 2024 and December 31, 2023, respectively. Net unamortized discounts on acquired loans included in the ending balance was $8.5 million and $8.6 million at March 31, 2024 and December 31, 2023, respectively.

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Loan Modifications

The following tables present the period end amortized cost basis of loans modified to borrowers experiencing financial difficulty during the three months ended March 31, 2024 and 2023, respectively, disaggregated by class of financing receivable and type of modification granted:

	Three Months Ended March 31, 2024			Three Months Ended March 31, 2023
	Interest Rate Reduction
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Type	(Dollars in thousands)
Small business	$	51	0.02%	$	—	—%
Total	$	51		$	—
	Term Extension
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	9,725	0.62%	$	—	—%
Commercial real estate	3,375		0.04%	2,540		0.03%
Commercial construction	10,644		1.28%	—		—%
Small business	—		—%	105		0.05%
Total	$	23,744		$	2,645
	Other-Than-Insignificant Payment Delay
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	1,809	0.11%	$	2,805	0.17%
Commercial real estate	6,351		0.08%	7,013		0.09%
Total	$	8,160		$	9,818
	Combination - Interest Rate Reduction and Term Extension
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	179	0.01%	$	—	—%
Small business	—		—%	44		0.02%
Home equity	72		0.01%	—		—%
Total	251			44
Grand Total	$	32,206		$	12,507

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The following table describes the financial effect of modifications made to borrowers experiencing financial difficulty for the periods indicated:

Three Months Ended March 31, 2024
Term Extension
Loan Category	Financial Effect
Commercial and industrial	Added a weighted-average contractual term of 3 months to the life of the loans
Commercial real estate	Added a weighted-average contractual term of 6 months to the life of the loans
Commercial construction	Added a weighted-average contractual term of 5 months to the life of the loans
Interest Rate Reduction
Loan Category	Financial Effect
Small business	Reduced contractual rate on one loan from 11.00% to 8.20%
Combination - Interest Rate Reduction and Term Extension
Loan Category	Financial Effect
Commercial and industrial	Reduced contractual rate on one loan from 10.10% to 7.20% and added a weighted average contractual term of 1.5 years
Home equity	Reduced contractual rate on one loan from 10.00% to 6.80% and added a weighted-average contractual term of 8.1 years
Three Months Ended March 31, 2023
Term Extension
Loan Category	Financial Effect
Commercial real estate	Added a weighted-average contractual term of 2 months to the life of the loans
Small business	Added a weighted-average contractual term of 4.3 years to the life of the loans
Interest Rate Reduction
Loan Category	Financial Effect
Small business	Reduced weighted-average contractual interest rate from 10.00% to 6.50%

The Company closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the amortized cost and payment status of loans that have been modified in the last 12 months as of March 31, 2024:

	Payment Status (Amortized Cost Basis)
	Current		30-89 Days Past Due		90+ Days Past Due
	(Dollars in thousands)
Loan Type
Commercial and industrial	$	11,963	$	—	$	—
Commercial real estate	27,094		—		136
Small business	159		—		—
Total	$	49,932	$	—	$	136

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The Company considers a loan to have defaulted when it reaches 90 days past due. At March 31, 2024 there was one $136,000 commercial real estate loan that defaulted during the three months then ended which was modified with a term extension to a borrower experiencing financial difficulty in the prior 12 months.

At March 31, 2024, the Company had $640,000 in additional commitments to lend to one borrower experiencing financial difficulty, pertaining to a construction loan that was modified during the three months then ended with a term extension.

    Loan modifications to borrowers experiencing financial difficulty are evaluated on a collective basis with loans sharing similar risk characteristics in accordance with the current expected credit loss ("CECL") methodology.

NOTE 4 - BORROWINGS

On March 15, 2024 the Company fully redeemed its outstanding subordinated debentures with an aggregate principal amount of $50.0 million. The subordinated debentures were originally issued on March 14, 2019 in a private placement transaction to institutional accredited investors and were set to mature on March 15, 2029 with an option to redeem without penalty at any scheduled date on or after March 15, 2024 with 30 days' notice, which was provided by the Company prior to redemption.

NOTE 5 - STOCK BASED COMPENSATION

During the three months ended March 31, 2024, the Company had the following activity related to stock based compensation:

Time Vested Restricted Stock Awards

The Company made the following awards of time vested restricted stock:

Date	Shares Granted	Plan	Grant Date Fair Value Per Share		Vesting Period
2/22/2024	106,200	2023 Omnibus Incentive Plan	$	52.73	Ratably over 3 years from grant date

Performance-Based Restricted Stock Awards

    On February 22, 2024, the Company granted 41,200 performance-based restricted stock awards, representing the maximum number of shares that may be earned under the awards, to certain executive level employees. These performance-based restricted stock awards were issued from the 2023 Omnibus Incentive Plan and were determined to have a grant date fair value per share of $52.73. The number of shares to be vested is contingent upon the Company's attainment of certain performance criteria to be measured at the end of a three-year performance period ending December 31, 2026. The awards will vest upon the earlier of the date on which it is determined if the performance goal is achieved subsequent to the performance period, or March 15, 2027.

    On March 14, 2024, the performance-based restricted stock awards that were awarded on February 18, 2021 vested at 80% of the maximum target shares awarded, or 11,874 shares, net of forfeitures.

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NOTE 6 - DERIVATIVE AND HEDGING ACTIVITIES

The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally to manage the Company’s interest rate risk. Additionally, the Company enters into interest rate derivatives, foreign exchange contracts and risk participation agreements to accommodate the business requirements of its customers (“customer related positions”). The Company minimizes the market and liquidity risks of customer related positions by entering into similar offsetting positions with broker-dealers. Derivative instruments are carried at fair value in the Company's financial statements. The accounting for changes in the fair value of a derivative instrument is dependent upon whether or not it qualifies as a hedge for accounting purposes, and further, by the type of hedging relationship.

The Company does not enter into proprietary trading positions for any derivatives.

The Company is subject to over-the-counter derivative clearing requirements which require certain derivatives to be cleared through central clearing houses. Accordingly, the Company clears certain derivative transactions through the Chicago Mercantile Exchange Clearing House ("CME"). This clearing house requires the Company to post initial and variation margin to mitigate the risk of non-payment, the latter of which is received or paid daily based on the net asset or liability position of the contracts.

Interest Rate Positions

The Company may utilize various interest rate derivatives as hedging instruments against interest rate risk associated with the Company’s borrowings and loan portfolios. An interest rate derivative is an agreement whereby one party agrees to pay a floating rate of interest on a notional principal amount in exchange for receiving a fixed rate of interest on the same notional amount, for a predetermined period of time, from a second party. The amounts relating to the notional principal amount are not actually exchanged.

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The following tables reflect the Company's derivative positions at the dates indicated below for interest rate swaps which qualify as cash flow hedges for accounting purposes:

March 31, 2024
				Weighted Average Rate
	Notional Amount		Average Maturity	Current Rate Received		Pay Fixed Swap Rate		Fair Value
	(in thousands)		(in years)					(in thousands)
Interest rate swaps on borrowings	$	400,000	2.33	5.32	%	3.67	%	$	6,695
				Current Rate Paid		Receive Fixed Swap Rate
Interest rate swaps on loans	800,000		2.40	5.33	%	2.70	%	(34,008)
				Current Rate Paid		Receive Fixed Swap Rate Cap - Floor
Interest rate collars on loans	300,000		1.47	5.43	%	3.09% - 2.01%		(4,679)
Total	$	1,500,000						$	(31,992)
December 31, 2023
				Weighted Average Rate
	Notional Amount		Average Maturity	Current Rate Received		Pay Fixed Swap Rate		Fair Value
	(in thousands)		(in years)					(in thousands)
Interest rate swaps on borrowings	$	400,000	2.58	5.34	%	3.67	%	$	1,901
	Notional Amount		Average Maturity	Current Rate Paid		Receive Fixed Swap Rate		Fair Value
Interest rate swaps on loans	850,000		2.50	5.36	%	2.72	%	(27,350)
				Current Rate Paid		Receive Fixed Swap Rate Cap - Floor
Interest rate collars on loans	350,000		1.48	5.45	%	3.09% - 2.12%		(4,714)
Total	$	1,600,000						$	(30,163)

The maximum length of time over which the Company is currently hedging its exposure to the variability in future cash flows for forecasted transactions related to the payment of variable interest on existing financial instruments is 5.0 years.

For derivative instruments that are designated and qualify as cash flow hedging instruments, the effective portion of the gains or losses is reported as a component of other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings.  The Company expects approximately $4.9 million (pre-tax) to be reclassified as an increase to interest income and $20.6 million (pre-tax) to be reclassified as an increase to interest expense, from OCI related to the Company’s cash flow hedges in the twelve months following March 31, 2024.  This reclassification is due to anticipated payments that will be made and/or received on the swaps based upon the forward curve at March 31, 2024.

The Company had no fair value hedges as of March 31, 2024 or December 31, 2023.

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Customer Related Positions

Loan level derivatives, primarily interest rate swaps, offered to commercial borrowers through the Company’s loan level derivative program do not qualify as hedges for accounting purposes. The Company believes that its exposure to commercial customer derivatives is limited because these contracts are simultaneously matched at inception with an offsetting dealer transaction. Derivatives with dealer counterparties are then either cleared through a clearinghouse or settled directly with a single counterparty. The commercial customer derivative program allows the Company to retain variable-rate commercial loans while allowing the customer to synthetically fix the loan rate by entering into a variable-to-fixed interest rate swap. The amounts relating to the notional principal amount are not actually exchanged.

Foreign exchange contracts offered to commercial borrowers through the Company’s derivative program do not qualify as hedges for accounting purposes. The Company acts as a seller and buyer of foreign exchange contracts to accommodate its customers. To mitigate the market and liquidity risk associated with these derivatives, the Company enters into similar offsetting positions. The amounts relating to the notional principal amount are exchanged.

The Company has entered into risk participation agreements with other dealer banks in commercial loan agreements. Participating banks guarantee the performance on borrower-related interest rate swap contracts. These derivatives are not designated as hedges and, therefore, changes in fair value are recognized in earnings. Under a risk participation-out agreement, a derivative asset, the Company participates out a portion of the credit risk associated with the interest rate swap position executed with the commercial borrower for a fee paid to the participating bank. Under a risk participation-in agreement, a derivative liability, the Company assumes, or participates in, a portion of the credit risk associated with the interest rate swap position with the commercial borrower for a fee received from the other bank.

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The following tables reflect the Company’s customer related derivative positions at the dates indicated below for those derivatives not designated as hedging:

		Notional Amount Maturing
	Number of  Positions  (1)	Less than 1 year		Less than 2 years		Less than 3 years		Less than 4 years		Thereafter		Total		Fair Value
	March 31, 2024
	(Dollars in thousands)
Loan level swaps
Receive fixed, pay variable	276	$	134,253	$	237,171	$	235,290	$	247,638	$	910,248	$	1,764,600	$	(110,626)
Pay fixed, receive variable	276	134,253		237,171		235,290		247,638		910,248		1,764,600		110,519
Foreign exchange contracts
Buys foreign currency, sells U.S. currency	24	85,312		—		—		—		—		85,312		(463)
Buys U.S. currency, sells foreign currency	24	85,312		—		—		—		—		85,312		502
Risk participation agreements
Participation out	17	24,063		—		—		34,491		92,158		150,712		111
Participation in	12	—		—		36,275		—		15,639		51,914		(24)
		Notional Amount Maturing
	Number of  Positions  (1)	Less than 1 year		Less than 2 years		Less than 3 years		Less than 4 years		Thereafter		Total		Fair Value
	December 31, 2023
	(Dollars in thousands)
Loan level swaps
Receive fixed, pay variable	281	$	80,682	$	252,260	$	223,928	$	230,513	$	997,108	$	1,784,491	$	(88,415)
Pay fixed, receive variable	281	80,682		252,260		223,928		230,513		997,108		1,784,491		88,280
Foreign exchange contracts
Buys foreign currency, sells U.S. currency	22	65,586		12,957		—		—		—		78,543		2,197
Buys U.S. currency, sells foreign currency	22	65,586		12,957		—		—		—		78,543		(2,160)
Risk participation agreements
Participation out	17	—		24,193		—		13,119		114,027		151,339		200
Participation in	8	—		—		13,016		18,989		15,725		47,730		(44)

(1)The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.

Mortgage Derivatives

The Company enters into commitments to fund residential mortgage loans at specified rates and times in the future, with the intention that loans may be sold subsequently in the secondary market. Mortgage loan commitments are referred to as derivative loan commitments if the loan that will result from exercise of the commitment will be held for sale upon funding. These commitments are recognized at fair value on the consolidated balance sheet in other assets and other liabilities with changes in their fair values recorded within mortgage banking income. In addition, the Company has elected the fair value option to carry loans held for sale at fair value. The change in fair value of loans held for sale is recorded in current period earnings as a component of mortgage banking income in accordance with the Company's fair value election. The fair value of loans held for sale increased by $70,000 and decreased by $17,000 for the three months ended March 31, 2024 and 2023, respectively. These amounts were offset in earnings by the change in the fair value of mortgage derivatives.

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Outstanding loan commitments expose the Company to the risk that the price of the loans arising from exercise of the loan commitment might change from inception of the rate lock to funding of the loan due to changes in mortgage interest rates. If interest rates increase, the value of these loan commitments decreases. Conversely, if interest rates decrease, the value of these loan commitments increases. To protect against the price risk inherent in derivative loan commitments, the Company utilizes both "mandatory delivery" and "best efforts" forward loan sale commitments to mitigate the risk of potential decreases in the values of loans that would result from the exercise of the derivative loan commitments. Mandatory delivery contracts are accounted for as derivative instruments. Included in the mandatory delivery forward commitments are To Be Announced securities ("TBAs"). Certain assumptions, including pull through rates and rate lock periods, are used in managing the existing and future hedges. The accuracy of underlying assumptions will impact the ultimate effectiveness of any hedging strategies.

With mandatory delivery contracts, the Company commits to deliver a certain principal amount of mortgage loans to an investor at a specified price on or before a specified date. If the Company fails to deliver the amount of mortgages necessary to fulfill the commitment by the specified date, it is obligated to pay a "pair-off" fee, based on then-current market prices, to the investor/counterparty to compensate the investor for the shortfall. Generally, the Company makes this type of commitment once mortgage loans have been funded and are held for sale, in order to minimize the risk of failure to deliver the requisite volume of loans to the investor and paying pair-off fees as a result. The Company also sells TBA securities to offset potential changes in the fair value of derivative loan commitments. Generally, the Company sells TBA securities by entering into derivative loan commitments for settlement in 30 to 90 days. The Company expects that mandatory delivery contracts, including TBA securities, will experience changes in fair value opposite to the changes in the fair value of derivative loan commitments.

With best effort contracts, the Company commits to deliver an individual mortgage loan of a specified principal amount and quality to an investor if the loan to the underlying borrower closes. Generally, best efforts cash contracts have no pair off risk regardless of market movement. The price the investor will pay the seller for an individual loan is specified prior to the loan being funded (e.g., on the same day the lender commits to lend funds to a potential borrower). The Company expects that these best efforts forward loan sale commitments will experience a net neutral shift in fair value with related derivative loan commitments.

The aggregate amount of net realized gains on sales of mortgage loans included within mortgage banking income was $593,000 and $174,000 for the three months ended March 31, 2024 and 2023, respectively.

Balance Sheet Offsetting

The Company does not offset fair value amounts recognized for derivative instruments. The Company does net the amount recognized for the right to reclaim cash collateral against the obligation to return cash collateral arising from derivative instruments executed with the same counterparty under a master netting arrangement. Collateral legally required to be maintained at dealer banks by the Company is monitored and adjusted as necessary.

A daily settlement occurs through the CME for changes in the fair value of centrally cleared derivatives. Not all of the derivatives are required to be cleared through the daily clearing agent. As a result, the total fair values of loan level derivative assets and liabilities recognized on the Company's financial statements are not equal and offsetting.

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The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet and the potential effect of netting arrangements on its financial position, at the dates indicated:

	Asset Derivatives (1)						Liability Derivatives (2)
	Fair Value at			Fair Value at			Fair Value at			Fair Value at
	March 31 2024			December 31 2023			March 31 2024			December 31 2023
	(Dollars in thousands)
Derivatives designated as hedges
Interest rate derivatives	$	6,695	(3)	$	1,927		$	38,687	(4)	$	32,090	(4)
Derivatives not designated as hedges
Customer Related Positions
Loan level derivatives	111,146		(3)	99,416		(3)	111,252		(4)	99,551		(4)
Foreign exchange contracts	1,304			2,220			1,265			2,183
Risk participation agreements	111			200			24			44
Mortgage Derivatives
Interest rate lock commitments	357			168			85			—
Forward sale loan commitments	129			17			—			—
Total derivatives not designated as hedges	113,047			102,021			112,711			101,778
Total	119,742			103,948			151,398			133,868
Netting Adjustments (5)	(57,796)			(48,253)			32,323			25,360
Net Derivatives on the Balance Sheet	61,946			55,695			119,075			108,508
Financial instruments (6)	6,220			12,018			6,220			12,018
Cash collateral pledged (received)	(26,969)			(17,076)			—			—
Net Derivative Amounts	$	28,757		$	26,601		$	112,855		$	96,490

(1)All asset derivatives are reflected in other assets on the balance sheet.

(2)All liability derivatives are reflected in other liabilities on the balance sheet.

(3)Approximately $426,000 and $3.2 million of accrued interest receivable is included in the fair value of interest rate and loan level derivative assets, respectively, at March 31, 2024, in comparison to accrued interest receivable of approximately $316,000 and $3.0 million, respectively, at December 31, 2023.

(4)Approximately $1.8 million and $3.2 million of accrued interest payable is included in the fair value of interest rate and loan level derivative liabilities, respectively, at March 31, 2024, in comparison to accrued interest payable of approximately $1.9 million and $3.0 million, respectively, at December 31, 2023.

(5)Netting adjustments represent the amounts recorded to convert derivative assets and liabilities cleared through CME from a gross basis to a net basis, inclusive of the variation margin payments, in accordance with applicable accounting guidance.

(6)Reflects offsetting derivative positions with the same counterparty that are not netted on the balance sheet.

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The table below presents the effect of the Company’s derivative financial instruments included in OCI and current earnings for the periods indicated:

	Three Months Ended
	March 31
	2024		2023
	(Dollars in thousands)
Derivatives designated as hedges
(Loss) gain in OCI on derivatives (effective portion), net of tax	$	(1,488)	$	10,163
Loss reclassified from OCI into interest income or interest expense (effective portion)	$	(5,856)	$	(6,239)
Derivatives not designated as hedges
Changes in fair value of customer related positions
Other income	$	35	$	272
Other expense	(72)		(77)
Changes in fair value of mortgage derivatives
Mortgage banking income	131		(46)
Total	$	94	$	149

    The Company's derivative agreements with institutional counterparties contain various credit-risk related contingent provisions, such as requiring the Company to maintain a well-capitalized capital position. If the Company fails to meet these conditions, the counterparties could request the Company make immediate payment or demand that the Company provide immediate and ongoing full collateralization on derivative positions in net liability positions. All derivative instruments with credit-risk contingent features were in a net asset position at March 31, 2024 and December 31, 2023.

    By using derivatives, the Company is exposed to credit risk to the extent that counterparties to the derivative contracts do not perform as required. Should a counterparty fail to perform under the terms of a derivative contract, the Company's credit exposure on interest rate swaps is limited to the net positive fair value and accrued interest of all swaps with each counterparty. The Company seeks to minimize counterparty credit risk through credit approvals, limits, monitoring procedures, and obtaining collateral, where appropriate. Institutional counterparties must have an investment grade credit rating and be approved by the Company's Board of Directors. In addition, certain derivative contracts executed bilaterally with a dealer counterparty in the over-the-counter market are cleared through a clearinghouse, whereby the clearinghouse becomes the counterparty to the transaction. As such, management believes the risk of incurring credit losses on derivative contracts with those counterparties is remote. The Company's exposure relating to institutional counterparties was $117.5 million and $95.8 million at March 31, 2024 and December 31, 2023, respectively. The Company’s exposure relating to customer counterparties was approximately $313,000 and $5.6 million at March 31, 2024 and December 31, 2023, respectively. Credit exposure may be reduced by the value of collateral pledged by the counterparty.

NOTE 7 - FAIR VALUE MEASUREMENTS

Fair value is a market-based measure considered from the perspective of a market participant rather than an entity-specific measure. Therefore, even when market assumptions are not readily available, the assumptions applied by the Company when determining fair value reflect those that the Company determines market participants would use to price the asset or liability at the measurement date. If there has been a significant decrease in the volume and level of activity for the asset or liability, regardless of the valuation technique(s) used, the objective of a fair value measurement remains the same. Fair value is the price that would be received if the asset were to be sold or that would be paid if the liability were to be transferred in an orderly market transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. When determining fair value, the Company considers pricing information and other inputs that are current as of the measurement date. In periods of market dislocation, the observability of prices and other inputs may be reduced for certain instruments, or not available at all. The unavailability or reduced availability of pricing or other input information could cause an instrument to be reclassified from one level to another.

The Fair Value Measurements and Disclosures Topic of the FASB ASC defines fair value and establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under the Fair Value Measurements and Disclosures Topic of the FASB ASC are described below:

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Level 1 – Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 – Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.

Level 3 – Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

Valuation Techniques

There were no changes in the valuation techniques used during the three months ended March 31, 2024.

Securities

Trading and Equity Securities

These equity securities are valued based on market quoted prices. These securities are categorized in Level 1 as they are actively traded and no valuation adjustments have been applied.

U.S. Government Agency and U.S. Treasury Securities

Fair value is estimated using either multi-dimensional spread tables or benchmarks. The inputs used include benchmark yields, reported trades, and broker/dealer quotes. These securities are classified as Level 2.

Agency Mortgage-Backed Securities

Fair value is estimated using either a matrix or benchmarks. The inputs used include benchmark yields, reported trades, broker/dealer quotes, and issuer spreads. These securities are categorized as Level 2.

Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities

The valuation model for these securities is volatility-driven and ratings based, and uses multi-dimensional spread tables. The inputs used include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are categorized as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2.

State, County, and Municipal Securities

The fair value is estimated using a valuation matrix with inputs including bond interest rate tables, recent transactions, and yield relationships. These securities are categorized as Level 2.

Single and Pooled Issuer Trust Preferred Securities

The fair value of trust preferred securities, including pooled and single issuer preferred securities, is estimated using external pricing models, discounted cash flow methodologies or similar techniques. The inputs used in these valuations include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2.

Loans Held for Sale

The Company has elected the fair value option to account for originated closed loans intended for sale. The fair value is measured on an individual loan basis using quoted market prices and when not available, comparable market value or discounted cash flow analysis may be utilized. These assets are typically classified as Level 2.

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Derivative Instruments

Derivatives

The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The Company incorporates credit valuation adjustments to appropriately reflect nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings. Additionally, in conjunction with fair value measurement guidance, the Company has made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio. Although the Company has determined that the majority of the inputs used to value its interest rate derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its interest rate derivatives and risk participation agreements may also utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. However, as of March 31, 2024 and December 31, 2023, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are properly classified as Level 2.

Mortgage Derivatives

The fair value of mortgage derivatives is determined based on current market prices for similar assets in the secondary market and, therefore, classified as Level 2 within the fair value hierarchy.

Individually Assessed Collateral Dependent Loans

In accordance with the CECL standard, expected credit losses on individually assessed loans deemed to be collateral dependent are valued based upon the lower of amortized cost or fair value of the underlying collateral less costs to sell.  The inputs used in the appraisals of the collateral are not always observable, and in such cases the loans may be classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2.

Other Real Estate Owned and Other Foreclosed Assets

Other Real Estate Owned ("OREO") and Other Foreclosed Assets, when applicable, are valued at the lower of cost or fair value of the property, less estimated costs to sell. The fair values are generally estimated based upon recent appraisal values of the property less costs to sell the property. Certain inputs used in appraisals are not always observable, and therefore OREO and Other Foreclosed Assets may be classified as Level 3 within the fair value hierarchy.

Goodwill and Other Intangible Assets

Goodwill and other intangible assets are subject to impairment testing. The Company conducts an annual impairment test of goodwill in the third quarter of each year, or more frequently if necessary. Other intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. To estimate the fair value of goodwill and, if necessary, other intangible assets, the Company utilizes both a comparable analysis of relevant price multiples in recent market transactions and a discounted cash flow analysis. Both valuation models require a significant degree of management judgment. In the event the fair value as determined by the valuation model is less than the carrying value, the intangibles may be impaired. If the impairment testing resulted in impairment, the Company would classify the impaired goodwill and other intangible assets subjected to nonrecurring fair value adjustments as Level 3.

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Assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows at the dates indicated:

			Fair Value Measurements at Reporting Date Using
	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	March 31, 2024
	(Dollars in thousands)
Recurring fair value measurements
Assets
Trading securities	$	4,759	$	4,759	$	—	$	—
Equity securities	22,858		22,858		—		—
Securities available for sale
U.S. government agency securities	205,676		—		205,676		—
U.S. treasury securities	718,838		—		718,838		—
Agency mortgage-backed securities	270,605		—		270,605		—
Agency collateralized mortgage obligations	32,088		—		32,088		—
State, county, and municipal securities	191		—		191		—
Pooled trust preferred securities issued by banks and insurers	1,036		—		1,036		—
Small business administration pooled securities	44,397		—		44,397		—
Loans held for sale	11,340		—		11,340		—
Derivative instruments	119,742		—		119,742		—
Liabilities
Derivative instruments	151,398		—		151,398		—
Total recurring fair value measurements	$	1,280,132	$	27,617	$	1,252,515	$	—
Nonrecurring fair value measurements
Assets
Individually assessed collateral dependent loans (1)	$	29,289	$	—	$	—	$	29,289
Total nonrecurring fair value measurements	$	29,289	$	—	$	—	$	29,289

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			Fair Value Measurements at Reporting Date Using
	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2023
	(Dollars in thousands)
Recurring fair value measurements
Assets
Trading securities	$	4,987	$	4,987	$	—	$	—
Equity securities	22,510		22,510		—		—
Securities available for sale
U.S. government agency securities	207,138		—		207,138		—
U.S. treasury securities	769,102		—		769,102		—
Agency mortgage-backed securities	277,047		—		277,047		—
Agency collateralized mortgage obligations	33,189		—		33,189		—
State, county, and municipal securities	190		—		190		—
Pooled trust preferred securities issued by banks and insurers	1,018		—		1,018		—
Small business administration pooled securities	46,572		—		46,572		—
Loans held for sale	6,368		—		6,368		—
Derivative instruments	103,948		—		103,948		—
Liabilities
Derivative instruments	133,868		—		133,868		—
Total recurring fair value measurements, net	$	1,338,201	$	27,497	$	1,310,704	$	—
Nonrecurring fair value measurements
Assets
Individually assessed collateral dependent loans (1)	$	28,881	$	—	$	—	$	28,881
Total nonrecurring fair value measurements	$	28,881	$	—	$	—	$	28,881

(1)     The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.

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The estimated fair values and related carrying amounts for assets and liabilities for which fair value is only disclosed are shown below at the dates indicated:

					Fair Value Measurements at Reporting Date Using
	Carrying Value		Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	March 31, 2024
	(Dollars in thousands)
Financial assets
Securities held to maturity (a)
U.S. government agency securities	$	29,086	$	28,243	$	—	$	28,243	$	—
U.S. treasury securities	100,732		90,810		—		90,810		—
Agency mortgage-backed securities	819,912		748,601		—		748,601		—
Agency collateralized mortgage obligations	465,016		393,258		—		393,258		—
Single issuer trust preferred securities issued by banks	1,500		1,372		—		1,372		—
Small business administration pooled securities	129,021		121,337		—		121,337		—
Loans, net of allowance for credit losses (b)	14,154,357		13,074,151		—		—		13,074,151
Federal Home Loan Bank stock (c)	46,304		46,304		—		46,304		—
Cash surrender value of life insurance policies (d)	298,352		298,352		—		298,352		—
Financial liabilities
Deposit liabilities, other than time deposits (e)	$	12,610,236	$	12,610,236	$	—	$	12,610,236	$	—
Time certificates of deposits (f)	2,432,985		2,418,961		—		2,418,961		—
Federal Home Loan Bank borrowings (f)	962,535		960,942		—		960,942		—
Junior subordinated debentures (g)	62,858		59,740		—		59,740		—

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					Fair Value Measurements at Reporting Date Using
	Carrying Value		Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2023
	(Dollars in thousands)
Financial assets
Securities held to maturity (a)
U.S. government agency securities	$	29,521	$	28,408	$	—	$	28,408	$	—
U.S. treasury securities	100,712		91,535		—		91,535		—
Agency mortgage-backed securities	829,431		763,728		—		763,728		—
Agency collateralized mortgage obligations	477,517		407,911		—		407,911		—
Single issuer trust preferred securities issued by banks	1,500		1,373		—		1,373		—
Small business administration pooled securities	130,426		124,653		—		124,653		—
Loans, net of allowance for credit losses (b)	14,106,967		13,079,368		—		—		13,079,368
Federal Home Loan Bank stock (c)	43,557		43,557		—		43,557		—
Cash surrender value of life insurance policies (d)	297,387		297,387		—		297,387		—
Financial liabilities
Deposit liabilities, other than time deposits (e)	$	12,684,068	$	12,684,068	$	—	$	12,684,068	$	—
Time certificates of deposits (f)	2,181,479		2,166,573		—		2,166,573		—
Federal Home Loan Bank borrowings (f)	1,105,541		1,103,845		—		1,103,845		—
Junior subordinated debentures (g)	62,858		58,911		—		58,911		—
Subordinated debentures (f)	49,980		49,613		—		—		49,613

(a)The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis.

(b)Fair value of loans is measured using the exit price valuation method, determined primarily by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows, while incorporating liquidity and credit assumptions. Additionally, this amount excludes individually assessed collateral dependent loans, which are deemed to be marked to fair value on a nonrecurring basis.

(c)Federal Home Loan Bank stock has no quoted market value and is carried at cost; therefore, the carrying amount approximates fair value.

(d)Cash surrender value of life insurance policies is recorded at its cash surrender value (or the amount that can be realized upon surrender of the policy), therefore, carrying amount approximates fair value.

(e)Fair value of demand deposits, savings and interest checking accounts and money market deposits is the amount payable on demand at the reporting date.

(f)Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities.

(g)Fair value was determined based upon market prices of securities with similar terms and maturities.

This summary excludes certain financial assets and liabilities for which the carrying value approximates fair value. For financial assets, these may include cash and due from banks, federal funds sold and short-term investments. For financial liabilities, these may include federal funds purchased. These instruments would all be considered to be classified as Level 1 within the fair value hierarchy. Also excluded from the summary are financial instruments measured at fair value on a recurring and nonrecurring basis, as previously described.

The Company considers its current use of financial instruments to be the highest and best use of the instruments.

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NOTE 8 - REVENUE RECOGNITION

A portion of the Company's noninterest income is derived from contracts with customers, and as such, the revenue recognized depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company accounts for such revenues in accordance with ASC 606 - Revenue from Contracts with Customers and considers the terms of the contract and all relevant facts and circumstances when applying this guidance. To ensure its alignment with this core principle, the Company measures revenue and the timing of recognition by applying the following five steps:

1.Identify the contract(s) with customers

2.Identify the performance obligations

3.Determine the transaction price

4.Allocate the transaction price to the performance obligations

5.Recognize revenue when (or as) the entity satisfies a performance obligation

The Company has disaggregated its revenue from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The following table presents the revenue streams that the Company has disaggregated as of the periods indicated:

	Three Months Ended
	March 31 2024		March 31 2023
	(Dollars in thousands)
Deposit account fees (inclusive of cash management fees)	$	6,228	$	5,916
Interchange fees	2,897		2,788
ATM fees	1,056		938
Investment management - wealth management and advisory services	9,080		8,185
Investment management - retail investments and insurance revenue	861		1,594
Payment processing income	538		470
Credit card income	533		493
Other noninterest income	1,114		1,198
Total noninterest income in-scope of ASC 606	22,307		21,582
Total noninterest income out-of-scope of ASC 606	7,636		6,660
Total noninterest income	$	29,943	$	28,242

In each of the revenue streams identified above, there were no significant judgments made in determining or allocating the transaction price, as the consideration and service requirements are generally explicitly identified in the associated contracts. Additional information related to each of the revenue streams is further noted below.

Deposit Account Fees

The Company offers various deposit account products to its customers governed by specific deposit agreements applicable to either personal customers or business customers. These agreements identify the general conditions and obligations of both parties, and include standard information regarding deposit account related fees.

Deposit account services include providing access to deposit accounts as well as access to the various deposit transactional services of the Company. These transactional services are primarily those that are identified in the standard fee schedule, and include, but are not limited to, services such as overdraft protection, wire transfer, and check collection. Revenue is recognized in conjunction with the various services being provided. For example, the Company may assess monthly fixed service fees associated with the customer having access to a deposit account, which can vary depending on the account type and daily account balance. In addition, the Company may also assess separate fixed fees associated with and at the time specific transactions are entered into by the customer. As such, the Company considers its performance obligations to be met concurrently with providing the account access or completing the requested deposit transaction.

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Cash Management

Cash management services are a subset of the Deposit account fees revenue stream. These services primarily include ACH transaction processing, positive pay and remote deposit services. These services are also governed by separate agreements entered into with the customer. The fee arrangement for these services is structured to assess fees under one of two scenarios, either a per transaction fee arrangement or an earnings credit analysis arrangement. Under the per transaction fee arrangement, fixed fees are assessed concurrently with customers executing the transactions, and as such, the Company considers its performance obligations to be met concurrently with completing the requested transaction. Under the earnings credit analysis arrangement, the Company provides a monthly earnings credit to the customer that is negotiated and determined based on various factors. The credit is then available to absorb the per transaction fees that are assessed on the customer's deposit account activity for the month. Any amount of the transactional fees in excess of the earnings credit is recognized as revenue in that month.

Interchange Fees

The Company earns interchange revenue from its issuance of credit and debit cards granted through its membership in various card payment networks. The Company provides credit cards and debit cards to its customers which are authorized and settled through these payment networks, and in exchange, the Company earns revenue as determined by each payment network's interchange program. The revenue is recognized concurrently with the settlement of card transactions within each network.

ATM Fees

The Company deploys automated teller machines (ATMs) as part of its overall branch network. Certain transactions performed at the ATMs require customers to acknowledge and pay a fee for the requested service. Certain ATM fees are disclosed in the deposit account agreement fee schedules, whereas those assessed to non-Rockland Trust deposit holders are solely determined during the transaction at the machine.

The ATM fee is a fixed dollar per transaction amount, and as such, is recognized concurrently with the overall daily processing and settlement of the ATM activity.

Investment Management - Wealth Management and Advisory Services

The Company offers investment management and trust services to individuals, institutions, small businesses and charitable institutions. Each investment management product is governed by its own contract along with a separate identifiable fee schedule unique to that product. The Company also offers additional services, such as estate settlement, financial planning, tax services and other special services quoted at the client's request.

Asset management and/or custody fees are based upon a percentage of the monthly valuation of the principal assets in the customer's account, whereas fees for additional or special services are fixed in nature and are charged as services are rendered. As the fees are dependent on assets under management, which are susceptible to market factors outside of the Company's control, this variable consideration is constrained and therefore no revenue is estimated at contract initiation. As such, all revenue is recognized in correlation to the monthly management fee determinations or as transactional services are provided. Due to the fact that payments are primarily made subsequent to the valuation period, the Company records a receivable for revenue earned but not received. The following table provides the amount of investment management revenue earned but not received as of the dates indicated:

	March 31, 2024		December 31, 2023
	(Dollars in thousands)
Receivables, included in other assets	$	5,635	$	5,509

Investment Management - Retail Investments and Insurance Revenue

The Company offers the sale of mutual fund shares, unit investment trust shares, third party model portfolios, general securities, fixed and variable annuities and life insurance products through registered representatives who are both employed by the Company and licensed and contracted with various Broker General Agents to offer these products to the Company’s customer base. As such, the Company performs these services as an agent and earns a fixed commission on the sales of these

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products and services. To a lesser degree, production bonus commissions can also be earned based upon the Company meeting certain volume thresholds.

In general, the Company recognizes commission revenue at the point of sale, and for certain insurance products, may also earn and recognize annual residual commissions commensurate with annual premiums being paid.

Payment Processing Income

The Company refers customers to third party payment processing partners in exchange for commission and fee income. The income earned is comprised of multiple components, including a fixed referral fee per each referred customer, a rebate amount determined primarily as a percentage of net revenue earned by the third party from services provided to each referred customer, and overall production bonus commissions if certain new account production thresholds are met. Payment processing income is recognized in conjunction with either completing the referral to earn the fixed fee amount or as the merchant activity is processed to derive the Company's rebate and/or production bonus amounts.

Credit Card Income

The Company provides consumer and business credit card solutions to its customers by soliciting new accounts on behalf of a third party credit card provider in exchange for a fee. The income earned is comprised of new account incentive payments as well as a percentage of interchange income earned by the third party provider offering the consumer and business purpose revolving credit accounts. The credit card income is recognized in conjunction with the establishment of each new credit card member or as the interchange is earned by the third party in connection with net purchase transactions made by the credit card member.

Other Noninterest Income

The Company earns various types of other noninterest income that fall within the scope of the new revenue recognition rules, and have been aggregated into one general revenue stream in the table noted above. This amount includes, but is not limited to, the following types of revenue with customers:

Safe Deposit Rent

    The Company rents out the use of safe deposit boxes to its customers, which can be accessed when the bank is open for business. The safe deposit box rental fee is paid upfront and is recognized as revenue ratably over the annual term of the contract.

Foreign Currency

    The Company earns fee income associated with various transactions related to foreign currency product offerings, including foreign currency bank notes and drafts and foreign currency wires. The majority of this income is derived from commissions earned related to customers executing the above mentioned foreign currency transactions through arrangements with third party correspondents.

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NOTE 9 - OTHER COMPREHENSIVE INCOME (LOSS)

The following tables present a reconciliation of the changes in the components of other comprehensive income (loss) for the periods indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss):

	Three Months Ended March 31, 2024
	Pre-Tax Amount		Tax (Expense) Benefit		After Tax Amount
	(Dollars in thousands)
Change in fair value of securities available for sale	$	(3,952)	$	944	$	(3,008)
Less: net security losses reclassified into other noninterest expense	—		—		—
Net change in fair value of securities available for sale	(3,952)		944		(3,008)
Change in fair value of cash flow hedges	(7,904)		2,161		(5,743)
Less: net cash flow hedge losses reclassified into interest income or interest expense	(5,856)		1,601		(4,255)
Net change in fair value of cash flow hedges	(2,048)		560		(1,488)
Amortization of net actuarial gains	(25)		7		(18)
Amortization of net prior service costs	4		(1)		3
Net change in other comprehensive income for defined benefit postretirement plans (1)	(21)		6		(15)
Total other comprehensive loss	$	(6,021)	$	1,510	$	(4,511)

	Three Months Ended March 31, 2023
	Pre-Tax Amount		Tax (Expense) Benefit		After Tax Amount
	(Dollars in thousands)
Change in fair value of securities available for sale	$	22,185	$	(5,117)	$	17,068
Less: net security losses reclassified into other noninterest expense	—		—		—
Net change in fair value of securities available for sale	22,185		(5,117)		17,068
Change in fair value of cash flow hedges	7,899		(2,221)		5,678
Less: net cash flow hedge losses reclassified into interest income or interest expense	(6,239)		1,754		(4,485)
Net change in fair value of cash flow hedges	14,138		(3,975)		10,163
Amortization of net actuarial gains	(137)		38		(99)
Amortization of net prior service costs	10		(3)		7
Net change in other comprehensive income for defined benefit postretirement plans (1)	(127)		35		(92)
Total other comprehensive income	$	36,196	$	(9,057)	$	27,139

(1)The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 12 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2023 Form 10-K.

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Information on the Company’s accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the dates indicated:

	Unrealized Gain (Loss) on Securities		Unrealized Gain (Loss) on Cash Flow Hedge		Defined Benefit Postretirement Plans		Accumulated Other Comprehensive Income (Loss)
	(Dollars in thousands)
	2024
Beginning balance: January 1, 2024	$	(96,231)	$	(20,575)	$	1,979	$	(114,827)
Net change in other comprehensive income (loss)	(3,008)		(1,488)		(15)		(4,511)
Ending balance: March 31, 2024	$	(99,239)	$	(22,063)	$	1,964	$	(119,338)
	2023
Beginning balance: January 1, 2023	$	(128,657)	$	(36,630)	$	2,203	$	(163,084)
Net change in other comprehensive income (loss)	17,068		10,163		(92)		27,139
Ending balance: March 31, 2023	$	(111,589)	$	(26,467)	$	2,111	$	(135,945)

NOTE 10 - COMMITMENTS AND CONTINGENCIES

Financial Instruments with Off-Balance Sheet Risk

    In the normal course of business, the Company enters into various transactions to meet the financing needs of its customers, which, in accordance with GAAP, are not included in its consolidated balance sheets. These transactions include commitments to extend credit and standby letters of credit, and loan exposures with recourse, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company minimizes its exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures.

    The Company enters into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of these commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding.

The Company has certain loan exposures for which there is recourse. These loan relationships could require the Company to repurchase or cover certain losses per agreements for certain loans that are either sold or referred to third parties.

    Standby letters of credit are written conditional commitments issued to guarantee the performance of a customer to a third party. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, the Company would be entitled to seek recovery from the customer. The Company’s policies generally require that standby letter of credit arrangements contain security and debt covenants similar to those contained in loan agreements.

    The fees collected in connection with the issuance of standby letters of credit are representative of the fair value of the Company's obligation undertaken in issuing the guarantee. In accordance with applicable accounting standards related to guarantees, fees collected in connection with the issuance of standby letters of credit are deferred. The fees are then recognized in income proportionately over the life of the standby letter of credit agreement. The deferred standby letter of credit fees represent the fair value of the Company's potential obligations under the standby letter of credit guarantees.

    The following table summarizes the above financial instruments at the dates indicated:

	March 31, 2024		December 31, 2023
	(Dollars in thousands)
Commitments to extend credit	$	4,704,239	$	4,632,105
Loan exposures sold with recourse	150,625		153,850
Standby letters of credit	21,626		21,427
Deferred standby letter of credit fees	190		155

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Lease Commitments

The Company leases space for offices, parking, and ATM locations, as well as certain branch locations under noncancellable operating leases. Several of these leases contain renewal options to extend lease terms for a period of 1 to 20 years.

There has been no significant change in the future minimum lease payments payable by the Company since December 31, 2023. See the Company's 2023 Form 10-K for information regarding leases and other commitments.

Other Contingencies

At March 31, 2024, the Bank was involved in pending lawsuits that arose in the ordinary course of business. Management has reviewed these pending lawsuits with legal counsel and has taken into consideration the view of counsel as to their outcome. In the opinion of management, the final disposition of pending lawsuits is not expected to have a material adverse effect on the Company’s financial position or results of operations.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with the consolidated financial statements, notes and tables included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the Securities and Exchange Commission (the "2023 Form 10-K").

Cautionary Statement Regarding Forward-Looking Statements

    This Quarterly Report on Form 10-Q (this "Report"), in Management's Discussion and Analysis of Financial Condition and Results of Operations and elsewhere, contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements are not historical facts and include expressions about management’s confidence and strategies and management’s expectations about new and existing programs and products, acquisitions, relationships, opportunities, taxation, technology, market conditions and economic expectations. These statements may be identified by forward-looking terminology such as “should,” “could,” “will,” “may,” “expect,” “believe,” “forecast,” “view,” “opportunity,” “allow,” “continues,” “reflects,” “typically,” “usually,” “anticipate,” “estimate,” “intend,” or similar statements or variations of such terms. Such forward-looking statements involve certain risks and uncertainties and our actual results may differ materially from such forward-looking statements. Factors that may cause actual results to differ materially from those contemplated by such forward-looking statements, in addition to those risk factors listed under the “Risk Factors” section of the 2023 Form 10-K, include but are not limited to:

•adverse economic conditions in the regional and local economies within the New England region and the Company’s market area;

•events impacting the financial services industry, including high profile bank failures, and any resulting decreased confidence in banks among depositors, investors, and other counterparties, as well as competition for deposits, significant disruption, volatility and depressed valuations of equity and other securities of banks in the capital markets;

•the effects to the Company of an increasingly competitive labor market, including the possibility that the Company will have to devote significant resources to attract and retain qualified personnel;

•the instability or volatility in financial markets and unfavorable domestic or global general economic, political or business conditions, whether caused by geopolitical concerns, including the Russia/Ukraine conflict, the conflict in Israel and surrounding areas and the possible expansion of such conflicts, changes in U.S. and international trade policies, or other factors, and the potential impact of such factors on the Company and its customers, including the potential for decreases in deposits and loan demand, unanticipated loan delinquencies, loss of collateral and decreased service revenues;

•unanticipated loan delinquencies, loss of collateral, decreased service revenues, and other potential negative effects on the Company’s local economies or the Company's business caused by adverse weather conditions and natural disasters, changes in climate, public health crises or other external events and any actions taken by governmental authorities in response to any such events;

•adverse changes or volatility in the local real estate market;

•changes in interest rates and any resulting impact on interest earning assets and/or interest bearing liabilities, the level of voluntary prepayments on loans and the receipt of payments on mortgage-backed securities, decreased loan demand or increased difficulty in the ability of borrowers to repay variable rate loans;

•acquisitions may not produce results at levels or within time frames originally anticipated and may result in unforeseen integration issues or impairment of goodwill and/or other intangibles;

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•the effect of laws, regulations, new requirements or expectations, or additional regulatory oversight in the highly regulated financial services industry, including as a result of intensified regulatory scrutiny in the aftermath of recent bank failures and the resulting need to invest in technology to meet heightened regulatory expectations, increased costs of compliance or required adjustments to strategy;

•changes in trade, monetary and fiscal policies and laws, including interest rate policies of the Board of Governors of the Federal Reserve System;

•higher than expected tax expense, including as a result of failure to comply with general tax laws and changes in tax laws;

•increased competition in the Company’s market areas, including competition that could impact deposit gathering, retention of deposits and the cost of deposits, increased competition due to the demand for innovative products and service offerings, and competition from non-depository institutions which may be subject to fewer regulatory constraints and lower cost structures;

•a deterioration in the conditions of the securities markets;

•a deterioration of the credit rating for U.S. long-term sovereign debt or uncertainties surrounding the federal budget;

•inability to adapt to changes in information technology, including changes to industry accepted delivery models driven by a migration to the internet as a means of service delivery, including any inability to effectively implement new technology-driven products, such as artificial intelligence;

•electronic or other fraudulent activity within the financial services industry, especially in the commercial banking sector;

•adverse changes in consumer spending and savings habits;

•the effect of laws and regulations regarding the financial services industry, including the need to invest in technology to meet heightened regulatory expectations or introduction of new requirements or expectations resulting in increased costs of compliance or required adjustments to strategy;

•changes in laws and regulations (including laws and regulations concerning taxes, banking, securities and insurance) generally applicable to the Company’s business and the associated costs of such changes;

•the Company's potential judgments, claims, damages, penalties, fines and reputational damage resulting from pending or future litigation and regulatory and government actions;

•changes in accounting policies, practices and standards, as may be adopted by the regulatory agencies as well as the Public Company Accounting Oversight Board, the Financial Accounting Standards Board, and other accounting standard setters;

•operational risks related to cyber threats, attacks, intrusions, and fraud which could lead to interruptions or disruptions of the Company's operating systems, including systems that are customer facing, and adversely impact the Company's business;

•any unexpected material adverse changes in the Company's operations or earnings; and

•the other risks described in the section entitled “Risk Factors” in Part I. Item 1A of the 2023 Form 10-K.

    Except as required by law, the Company disclaims any intent or obligation to update publicly any such forward-looking statements, whether in response to new information, future events or otherwise. Any public statements or disclosures by the Company following this Report which modify or impact any of the forward-looking statements contained in this Report will be deemed to modify or supersede such statements in this Report.

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Selected Quarterly Financial Data

The selected consolidated financial and other data of the Company set forth below does not purport to be complete and should be read in conjunction with, and is qualified in its entirety by, the more detailed information, including the Consolidated Financial Statements and related notes, appearing elsewhere in this Report.

				Three Months Ended
	March 31 2024			December 31 2023			September 30 2023			June 30 2023			March 31 2023
	(Dollars in thousands, except per share data)
Financial condition data
Securities	$	2,845,715		$	2,930,860		$	2,973,974		$	3,023,072		$	3,109,950
Loans	14,330,594			14,278,070			14,224,235			14,139,911			13,947,952
Allowance for credit losses	(146,948)			(142,222)			(140,569)			(140,647)			(159,131)
Goodwill and other intangible assets	1,001,698			1,003,262			1,004,897			1,006,609			1,008,325
Total assets	19,324,613			19,347,373			19,368,109			19,400,931			19,442,402
Total deposits	15,043,221			14,865,547			15,059,526			15,248,051			15,272,172
Total borrowings	1,025,393			1,218,379			1,000,362			901,269			992,393
Stockholders’ equity	2,884,208			2,895,252			2,885,408			2,854,914			2,830,909
Nonperforming loans	56,941			54,383			39,171			45,702			56,235
Nonperforming assets	57,051			54,493			39,281			45,812			56,235
Income statement
Interest income	$	208,045		$	207,170		$	202,928		$	198,693		$	186,935
Interest expense	70,606			62,074			53,048			46,147			27,937
Net interest income	137,439			145,096			149,880			152,546			158,998
Provision for credit losses	5,000			5,500			5,500			5,000			7,250
Noninterest income	29,943			32,067			33,543			30,757			28,242
Noninterest expenses	99,887			100,748			97,782			95,555			98,661
Net income	47,770			54,802			60,808			62,644			61,247
Per share data
Net income—basic	$	1.12		$	1.26		$	1.38		$	1.42		$	1.36
Net income—diluted	1.12			1.26			1.38			1.42			1.36
Cash dividends declared	0.57			0.55			0.55			0.55			0.55
Book value per share	67.94			67.53			65.37			64.69			64.17
Tangible book value per share (1)	44.34			44.13			42.60			41.88			41.31
Performance ratios
Return on average assets	1.00		%	1.13		%	1.25		%	1.29		%	1.30		%
Return on average common equity	6.63		%	7.51		%	8.35		%	8.78		%	8.63		%
Net interest margin (on a fully tax equivalent basis)	3.23		%	3.38		%	3.47		%	3.54		%	3.79		%
Dividend payout ratio	49.36		%	44.30		%	39.92		%	38.87		%	40.99		%
Asset Quality Ratios
Nonperforming loans as a percent of gross loans	0.40		%	0.38		%	0.28		%	0.32		%	0.40		%
Nonperforming assets as a percent of total assets	0.30		%	0.28		%	0.20		%	0.24		%	0.29		%
Allowance for credit losses as a percent of total loans	1.03		%	1.00		%	0.99		%	0.99		%	1.14		%
Allowance for credit losses as a percent of nonperforming loans	258.07		%	261.52		%	358.86		%	307.75		%	282.98		%

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Capital ratios
Equity to assets	14.92	%	14.96	%	14.90	%	14.72	%	14.56	%
Tangible equity to tangible assets (1)	10.27	%	10.31	%	10.24	%	10.05	%	9.89	%
Tier 1 leverage capital ratio	10.95	%	10.96	%	11.12	%	10.85	%	10.78	%
Common equity tier 1 capital ratio	14.16	%	14.19	%	14.41	%	14.06	%	13.83	%
Tier 1 risk-based capital ratio	14.16	%	14.19	%	14.41	%	14.06	%	13.83	%
Total risk-based capital ratio	15.57	%	15.91	%	16.12	%	15.76	%	15.66	%

(1)     Represents a non-GAAP measure. For reconciliation to GAAP book value per share, see Item 2 "Management's Discussion and Analysis of Financial Condition and Results of Operations - Executive Level Overview - Non-GAAP Measures" below.

Executive Level Overview

    Management evaluates the Company's operating results and financial condition using measures that include net income, earnings per share, return on assets and equity, return on tangible common equity, net interest margin, tangible book value per share, asset quality indicators, and many others. These metrics are used by management to make key decisions regarding the Company's balance sheet, liquidity, interest rate sensitivity, and capital resources and assist with identifying opportunities for improving the Company's financial position or operating results. The Company focuses on organic growth, but will also consider growth through acquisition. Any potential acquisition opportunities are evaluated for the potential to provide a satisfactory financial return as well as other criteria (ease of integration, synergies, geographical location).

First Quarter 2024 Results

Net income for the three months ended March 31, 2024 was $47.8 million, or $1.12 on a diluted earnings per share basis, as compared to $61.2 million, or $1.36 on a diluted earnings per share basis, for the three months ended March 31, 2023.

The 2024 first quarter results included the following key drivers:

•Disciplined loan growth and solid pipelines;

•Seasonal deposit growth with steady core household formation;

•Net interest margin at 3.23%, within expectations;

•Stable nonperforming asset levels; minimal charge-offs;

•Solid core fee income;

•Focused expense management;

•Tangible book value per share growth of $0.21; and

•$31.0 million of stock repurchases, marking completion of the Company's $100 million buyback program.

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Interest-Earning Assets

    The results depicted in the following table reflect the trend of the Company's interest-earning assets over the past five quarters. While the Company employs a longer term strategy that typically emphasizes loan growth commensurate with overall economic growth, changes over the five quarter period reflect relatively consistent balances of total interest-earning assets, with growth in the residential real estate portfolio offset by decreased securities balances. The following table summarizes the Company's average interest-earning assets for each period presented:

    Management strives to be disciplined about loan pricing and considers interest rate sensitivity when generating loan assets. In addition, management takes a disciplined approach to credit underwriting, seeking to avoid undue credit risk and credit losses.

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Funding and Net Interest Margin

    The Company's overall sources of funding reflect strong business and retail deposit growth with management's emphasis on core deposit growth to fund loans. In conjunction with deposit growth during the first quarter of 2024, total borrowings decreased by $193.0 million at March 31, 2024 as compared to December 31, 2023, primarily driven by a reduction in Federal Home Loan Bank borrowings. Additionally, the Company fully redeemed its outstanding subordinated debentures with an aggregate principal amount of $50.0 million. The following chart shows sources of funding for the trailing five quarters:

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The Company's ratio of core deposits to total deposits decreased over the last five quarters, primarily attributable to core deposit outflows in conjunction with existing deposit balances shifting into higher cost time deposits. The following chart shows the percentage of core deposits for the trialing five quarters:

(1)The percentage of core deposits to total deposits presented above is inclusive of reciprocal deposits collected through the Company's participation in the IntraFi Network.

    The following table shows the net interest margin and cost of deposits trends for the trailing five quarters:

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Noninterest Income

    Noninterest income is primarily comprised of deposit account fees, interchange and ATM fees, investment management fees and mortgage banking income. The following chart shows trends in the components of noninterest income over the past five quarters:

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Expense Control

    Management seeks to take a balanced approach to noninterest expense control by monitoring ongoing operating expenses while making needed capital expenditures and prudently investing in growth initiatives. The Company’s primary expenses arise from Rockland Trust’s employee salaries and benefits, as well as expenses associated with buildings and equipment.

The following chart depicts the Company's efficiency ratio (calculated by dividing noninterest expense by the sum of noninterest income and net interest income) over the past five quarters:

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Capital

    The Company's approach with respect to revenue and expense is designed to promote long-term earnings growth, which in turn contributes to capital growth. Capital is primarily impacted by earnings retention, dividends, changes in other comprehensive income, and opportunistic share repurchases. The following chart shows the Company's book value and tangible book value per share over the past five quarters:

*See "Non-GAAP Measures" below for a reconciliation to GAAP financial measures.

    The Company declared a quarterly cash dividend of $0.57 per share for the first quarter of 2024, representing an increase of 3.6% from the 2023 fourth quarter dividend rate of $0.55. During the first quarter of 2024, the Company repurchased 532,266 shares of its common stock for $31.0 million at an average price per share of $58.22, marking the completion of its previously announced $100 million buyback program.

Non-GAAP Measures

    When management assesses the Company’s financial performance for purposes of making day-to-day and strategic decisions, it does so based upon the performance of its core banking business, which is primarily derived from the combination of net interest income and noninterest or fee income, reduced by operating expenses, the provision for credit losses, and the impact of income taxes and other noncore items shown in the table that follows. There are items that impact the Company's results that management believes are unrelated to its core banking business such as gains or losses on the sales of securities, merger and acquisition expenses, provision for credit losses on acquired portfolios, loss on extinguishment of debt, impairment and other items. Management, therefore, excludes items management considers to be noncore when computing the Company’s non-GAAP operating earnings and operating EPS, noninterest income on an operating basis and efficiency ratio on an operating basis. Management believes excluding these items facilitates greater visibility into the Company’s core banking business and underlying trends that may, to some extent, be obscured by inclusion of such items.

Management also supplements its evaluation of financial performance with an analysis of tangible book value per share (which is computed by dividing stockholders' equity less goodwill and identifiable intangible assets, or tangible common equity, by common shares outstanding) and with the Company's tangible common equity ratio (which is computed by dividing tangible common equity by tangible assets) which are non-GAAP measures. The Company has included information on these tangible ratios because management believes that investors may find it useful to have access to the same analytical tools used by management to assess performance and identify trends.  The Company has recognized goodwill and other intangible assets in conjunction with merger and acquisition activities.  Excluding the impact of goodwill and other intangibles in measuring asset and capital values for the ratios provided, along with other bank standard capital ratios, facilitates comparison of the capital adequacy of the Company to other companies in the financial services industry.

These non-GAAP measures should not be viewed as a substitute for financial results determined in accordance with GAAP. An item which management deems to be noncore and excludes when computing these non-GAAP measures can be of substantial importance to the Company’s results for any particular period. The Company’s non-GAAP performance measures

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are not necessarily comparable to similarly named non-GAAP performance measures which may be presented by other companies.

The following table summarizes the calculation of tangible common equity to tangible assets ratio and tangible book value per share and shows the reconciliation of non-GAAP measures:

	March 31 2024			December 31 2023			September 30 2023			June 30 2023			March 31 2023
	(Dollars in thousands, except per share data)
Tangible common equity
Stockholders' equity (GAAP)	$	2,884,208		$	2,895,251		$	2,885,408		$	2,854,914		$	2,830,909		(a)
Less: Goodwill and other intangibles	1,001,698			1,003,262			1,004,897			1,006,609			1,008,325
Tangible common equity (Non-GAAP)	1,882,510			1,891,989			1,880,511			1,848,305			1,822,584			(b)
Tangible assets
Assets (GAAP)	19,324,613			19,347,373			19,368,109			19,400,931			19,442,402			(c)
Less: Goodwill and other intangibles	1,001,698			1,003,262			1,004,897			1,006,609			1,008,325
Tangible assets (Non-GAAP)	$	18,322,915		$	18,344,111		$	18,363,212		$	18,394,322		$	18,434,077		(d)
Common shares	42,452,457			42,873,187			44,141,973			44,130,901			44,114,827			(e)
Common equity to assets ratio (GAAP)	14.92		%	14.96		%	14.90		%	14.72		%	14.56		%	(a/c)
Tangible common equity to tangible assets ratio (Non-GAAP)	10.27		%	10.31		%	10.24		%	10.05		%	9.89		%	(b/d)
Book value per share (GAAP)	$	67.94		$	67.53		$	65.37		$	64.69		$	64.17		(a/e)
Tangible book value per share (Non-GAAP)	$	44.34		$	44.13		$	42.60		$	41.88		$	41.31		(b/e)

Critical Accounting Estimates

Critical accounting policies are defined as those that are reflective of significant management judgments and uncertainties, and could potentially result in materially different results under different assumptions and conditions. Certain estimates associated with these policies inherently have a greater reliance on the use of assumptions and judgments and, as such, have a greater possibility of producing results that could be materially different than originally reported. These critical accounting estimates are defined as estimates made in accordance with GAAP that involve a significant level of estimation uncertainty and have had, or are reasonably likely to have, a material impact on financial condition or results of operations.

There have been no material changes in critical accounting estimates during the first three months of 2024. Refer to "Critical Accounting Estimates" in Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations" in the Company's 2023 Form 10-K for a complete listing of critical accounting policies.

FINANCIAL POSITION

Securities Portfolio The Company's securities portfolio primarily consists of U.S. Treasury, U.S. government agency securities, agency mortgage-backed securities, agency collateralized mortgage obligations, and small business administration pooled securities. Also included in the Company's securities portfolio are trading and equity securities related to certain employee benefit programs. The majority of these securities are investment grade debt obligations with average lives of five years or less. U.S. government agency securities entail a lesser degree of risk than loans made by the Bank by virtue of the guarantees that back them, require less capital under risk-based capital rules than noninsured or nonguaranteed mortgage loans, are more liquid than individual mortgage loans, and may be used to collateralize borrowings or other obligations of the Bank. The Bank views its securities portfolio as a source of income and liquidity. Interest and principal payments generated from securities provide a source of liquidity to fund loans and meet short-term cash needs.

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Total securities decreased by $85.1 million, or 2.9%, at March 31, 2024 as compared to December 31, 2023, driven primarily by paydowns, calls, maturities, and unrealized losses of $4.0 million in the available for sale portfolio. As a result, the Company's ratio of securities to total assets decreased to 14.7% at March 31, 2024 compared to 15.1% at December 31, 2023. The Company estimates expected credit losses for its available for sale and held to maturity securities in accordance with the current expected credit loss ("CECL") methodology. Further details regarding the Company's measurement of expected credit losses on securities can be found in Note 2 “Securities” within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report.

Residential Mortgage Loan Sales The Bank’s residential mortgage loans are generally originated in compliance with terms, conditions and documentation which permit the sale of such loans to investors in the secondary market. Loan sales in the secondary market provide funds for additional lending and other banking activities. Depending on market conditions, the Bank may sell the servicing of the sold loans for a servicing released premium, simultaneous with the sale of the loan. For the remainder of the sold loans for which the Company retains the servicing, a mortgage servicing asset is recognized. Additionally, as part of its asset/liability management strategy, the Bank may opt to retain certain residential real estate loan originations for its portfolio. When a loan is sold, the Company enters into agreements that contain representations and warranties about the characteristics of the loans sold and their origination. The Company may be required to either repurchase mortgage loans or to indemnify the purchaser from losses if representations and warranties are found to be not accurate in all material respects. The Company incurred no material losses related to residential mortgage repurchases during the three months ended March 31, 2024 and 2023, respectively.

     The Company experienced a lower volume of residential real estate loan sales for the three months ended March 31, 2024 as compared to the three months ended March 31, 2023, driven primarily by reduced customer demand in the current interest rate environment. The following table shows the total residential real estate loans closed and the breakdown of amounts held in portfolio or sold (or held for sale) in the secondary market during the periods indicated:

Table 1 - Closed Residential Real Estate Loans

	Three Months Ended March 31
	2024		2023
	(Dollars in thousands)
Held in portfolio	$	30,538	$	91,526
Sold or held for sale in the secondary market	46,501		9,934
Total closed loans	$	77,039	$	101,460

Total residential real estate loan closings decreased during the quarter ended March 31, 2024 compared to March 31, 2023, and a larger portion of new originations were sold in the secondary market versus retained in the Company's portfolio as compared to the prior year period, reflecting the Company's 2024 strategy to shift the majority of its residential production to the saleable market.

The table below reflects additional information related to the loans sold during the periods indicated and the sale or retention of the related servicing rights:

Table 2 - Residential Mortgage Loan Sales

	Three Months Ended March 31
	2024		2023
	(Dollars in thousands)
Sold with servicing rights released	$	38,236	$	11,589
Sold with servicing rights retained (1)	3,364		—
Total loans sold	$	41,600	$	11,589

(1)All loans sold with servicing rights retained during the above periods were sold without recourse.

In the event of a sale with servicing rights retained, a mortgage servicing asset is established, which represents the then current estimated fair value based on market prices for comparable mortgage servicing contracts, when available, or

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alternatively is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing rights are recorded in other assets in the Consolidated Balance Sheets, are amortized in proportion to and over the period of estimated net servicing income, and are assessed for impairment based on fair value at each reporting date. Impairment is determined by stratifying the rights based on predominant characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance, to the extent that fair value is less than the capitalized amount. If the Company later determines that all or a portion of the impairment no longer exists, a reduction of the allowance may be recorded as an increase to income. The principal balance of loans serviced by the Bank on behalf of investors was $296.0 million, $298.8 million and $320.9 million at March 31, 2024, December 31, 2023, and March 31, 2023, respectively.

    The following table shows the adjusted cost of the servicing rights associated with these loans and the changes for the periods indicated:

Table 3 - Mortgage Servicing Asset

	Three Months Ended March 31
	2024		2023
	(Dollars in thousands)
Balance at beginning of period	$	2,641	$	2,947
Additions	24		—
Amortization	(105)		(136)
Change in valuation allowance	70		(1)
Balance at end of period	$	2,630	$	2,810

See Note 6, “Derivative and Hedging Activities” within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report for more information on mortgage activity and mortgage related derivatives.

Loan Portfolio The Company's total loan portfolio at March 31, 2024 increased by $52.5 million, or 0.4% (1.5% on an annualized basis), when compared to December 31, 2023. The 2024 first quarter growth was primarily within the commercial real estate loan portfolio, reflecting transfers from the construction portfolio, modest new origination activity, and reduced levels of paydowns. The small business portfolio also continued its steady growth, rising by 3.86% during the first quarter of 2024, while the total consumer real estate portfolios remained generally in line with prior quarter.

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The Company’s commercial real estate loan portfolio, inclusive of commercial construction, is the Company’s largest loan type concentration. The Company believes that this portfolio is also well-diversified with loans secured by a variety of property types, such as owner-occupied and nonowner-occupied commercial, retail, office, industrial, warehouse, and other special purpose properties, such as hotels, motels, nursing homes, restaurants, churches, recreational facilities, marinas, and golf courses. Commercial real estate also includes loans secured by certain residential-related property types, including multi-family apartment buildings, residential development tracts and condominiums. The following pie chart shows the diversification of the commercial real estate loan portfolio as of March 31, 2024:

	(Dollars in thousands)
Average loan size	$	1,623
Largest individual commercial real estate mortgage outstanding	$	61,493
Commercial real estate nonperforming loans/commercial real estate loans	0.27		%

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    Management considers the Company’s commercial and industrial portfolio to be well-diversified with loans to various types of industries. The following pie chart shows the diversification of the commercial and industrial portfolio as of March 31, 2024:

	(Dollars in thousands)
Average loan size (excluding floor plan tranches)	$	399
Largest individual commercial and industrial loan outstanding	$	36,820
Commercial and industrial nonperforming loans/commercial and industrial loans	1.12		%

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    The Company's consumer portfolio primarily consists of both fixed-rate and adjustable-rate residential real estate loans as well as residential construction lending related to single-home residential development within the Company's market area. The Company also provides home equity loans and lines of credit that may be made as a fixed-rate term loan or under a variable rate revolving line of credit secured by a first or junior mortgage on the borrower's residence or second home. Additionally, the Company makes loans for other personal needs. Other consumer loans primarily consist of installment loans and overdraft protections. The residential real estate, home equity and other consumer portfolios totaled $3.6 billion at March 31, 2024, as noted below:

	(Dollars in thousands)
Average loan size	$	111
Largest individual consumer loan outstanding	$	5,290
Consumer nonperforming loans/consumer loans	0.42		%

Asset Quality   The Company continually monitors the asset quality of the loan portfolio using all available information. Based on this assessment, loans demonstrating certain payment issues or other weaknesses may be categorized as delinquent, nonperforming and/or put on nonaccrual status. Further details surrounding relevant asset quality categories are summarized below:

Delinquency     The Company’s philosophy toward managing its loan portfolios is predicated upon careful monitoring, which stresses early detection and response to delinquent and default situations.  The Company seeks to make arrangements to resolve any delinquent or default situation over the shortest possible time frame.  Generally, the Company requires that a delinquency notice be mailed to a borrower upon expiration of a grace period (typically no longer than 15 days beyond the due date).  Reminder notices may be sent and telephone calls may be made prior to the expiration of the grace period. If the delinquent status is not resolved within a reasonable time frame following the mailing of a delinquency notice, the Bank’s personnel charged with managing its loan portfolios contacts the borrower to ascertain the reasons for delinquency and the prospects for payment.  Any subsequent actions taken to resolve the delinquency will depend upon the nature of the loan and the length of time that the loan has been delinquent. The borrower’s needs are considered as much as reasonably possible without jeopardizing the Bank’s position. A late charge is usually assessed on loans upon expiration of the grace period.

Nonaccrual Loans     As a general rule, loans 90 days or more past due with respect to principal or interest are classified as nonaccrual loans. However, certain loans that are 90 days or more past due may be kept on an accruing status if the loans are well secured and in the process of collection. Income accruals are suspended on all nonaccrual loans and all previously accrued

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and uncollected interest is reversed against current income. A loan remains on nonaccrual status until it becomes current with respect to principal and interest and remains current for a minimum period of six months, the loan is liquidated, or when the loan is determined to be uncollectible and is charged-off against the allowance for credit losses.

Loan Modifications In the course of resolving problem loans, the Company may choose to modify the contractual terms of certain loans. The Company attempts to work out an alternative payment schedule with the borrower in order to avoid or cure a default. Terms may be modified to fit the ability of the borrower to repay in line with its current financial status and may include adjustments to term extensions, interest rates, other than insignificant payment delays and/or a combination thereof. These actions are intended to minimize economic loss and avoid foreclosure or repossession of collateral. If such efforts by the Bank do not result in satisfactory performance, the loan is referred to legal counsel, at which time foreclosure proceedings are initiated. At any time prior to a sale of the property at foreclosure, the Bank may terminate foreclosure proceedings if the borrower is able to work out a satisfactory payment plan. All loan modifications are reviewed by the Company to identify if a borrower is deemed to be experiencing financial difficulty at time of the modification.

    Purchased Credit Deteriorated Loans    Purchased Credit Deteriorated ("PCD") loans are acquired loans which have shown a more-than-insignificant deterioration in credit quality since origination. PCD loans are recorded at amortized cost with an allowance for credit losses recorded upon purchase.

Nonperforming Assets     Nonperforming assets are typically comprised of nonperforming loans and other real estate owned ("OREO"). Nonperforming loans consist of nonaccrual loans and loans that are 90 days or more past due but still accruing interest.

OREO consists of real estate properties, which have primarily served as collateral to secure loans, that are controlled or owned by the Bank. These properties are recorded at fair value less estimated costs to sell at the date control is established, resulting in a new cost basis. The amount by which the recorded investment in the loan exceeds the fair value (net of estimated costs to sell) of the foreclosed asset is charged to the allowance for credit losses. Subsequent declines in the fair value of the foreclosed asset below the new cost basis are recorded through the use of a valuation allowance. Subsequent increases in the fair value are recorded as reductions in the valuation allowance, but not below zero. All costs incurred thereafter in maintaining the property are generally charged to noninterest expense. In the event the real estate is utilized as a rental property, net rental income and expenses are recorded as incurred within noninterest expense.

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The following table sets forth information regarding nonperforming assets held by the Company at the dates indicated:

Table 4 - Nonperforming Assets

	March 31 2024			December 31 2023			March 31 2023
	(Dollars in thousands)
Loans accounted for on a nonaccrual basis
Commercial and industrial	$	17,640		$	20,188		$	26,343
Commercial real estate	24,213			22,952			18,038
Small business	316			398			242
Residential real estate	9,947			7,634			8,178
Home equity	4,805			3,171			3,282
Other consumer	20			40			129
Total	$	56,941		$	54,383		$	56,212
Loans past due 90 days or more but still accruing
Commercial real estate	—			—			—
Home equity	—			—			23
Total	$	—		$	—		$	23
Total nonperforming loans	$	56,941		$	54,383		$	56,235
Other real estate owned	110			110			—
Total nonperforming assets (1)	$	57,051		$	54,493		$	56,235
Nonperforming loans as a percent of gross loans	0.40		%	0.38		%	0.40		%
Nonperforming assets as a percent of total assets	0.30		%	0.28		%	0.29		%

    The following table summarizes the changes in nonperforming assets for the periods indicated:

Table 5 - Activity in Nonperforming Assets

	Three Months Ended
	March 31 2024		March 31 2023
	(Dollars in thousands)
Nonperforming assets beginning balance	$	54,493	$	54,881
New to nonperforming	19,258		5,416
Loans charged-off	(881)		(815)
Loans paid-off	(6,982)		(1,915)
Loans restored to performing status	(8,855)		(1,352)
Other	18		20
Nonperforming assets ending balance	$	57,051	$	56,235

Allowance for Credit Losses  The allowance for credit losses is maintained at a level that management considers appropriate to provide for the Company's current estimate of expected lifetime credit losses on loans measured at amortized cost. The allowance is increased by providing for credit losses through a charge to expense and by credits for recoveries of loans previously charged-off and is reduced by loans being charged-off.

In accordance with the CECL methodology, the Company estimates credit losses for financial assets on a collective basis for loans sharing similar risk characteristics using a quantitative model combined with an assessment of certain qualitative factors designed to address forecast risk and model risk inherent in the quantitative model output. The model estimates expected credit losses using loan level data over the contractual life of the exposure, considering the effect of prepayments.

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Economic forecasts are incorporated into the estimate over a reasonable and supportable forecast period of one year, beyond which is a reversion to the Company's historical long-run average for a period of six months. The Company's qualitative assessment is structured based upon nine environmental factors impacting the expected risk of loss within the loan portfolio, with an additional factor designed to capture model imprecision. Loans that do not share similar risk characteristics with any pools of assets are subject to individual assessment and are removed from the collectively assessed pools to avoid double counting. For the loans that will be individually assessed, the Company uses either a discounted cash flow (“DCF”) approach or a fair value of collateral approach. The latter approach is used for loans deemed to be collateral dependent or when foreclosure is probable.

Management's allowance for credit loss estimate incorporates an economic forecast over a reasonable and supportable period of 12 months. As of March 31, 2024, the forecast selected by management assumes that the Federal Reserve will begin easing rates gradually in mid-2024, inflation will return to 2% target by the end of 2024, job growth will slow in 2024 with unemployment rising modestly, home prices will remain stable through 2024, and that prices for office real estate will generally decrease as uncertainty over occupancy and operating cash flows persists. Additionally, the allowance for credit losses is qualitatively adjusted on a quarterly basis in order to ensure coverage for relationships that are deemed to be more at risk within certain industries, specific collateral types, or other specific characteristics that may be highly impacted by the current economic environment.

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The following table summarizes the ratio of net charge-offs to average loans outstanding within each major loan category for the periods presented:

Table 6 - Summary Net Charge-Offs/(Recoveries) to Average Loans Outstanding

	Net Charge-Offs/(Recoveries)		Average Loans Outstanding		Ratio of Annualized Net Charge-Offs/(Recoveries) to Average Loans
	(Dollars in thousands)
	Three Months Ended March 31, 2024
Commercial and industrial	$	(85)	$	1,559,978	(0.02)	%
Commercial real estate	—		8,110,813		—	%
Commercial construction	—		842,480		—	%
Small business	70		257,022		0.11	%
Residential real estate	—		2,418,617		—	%
Home equity	(133)		1,094,856		(0.05)	%
Other consumer (1)	422		30,669		5.53	%
Total	$	274	$	14,314,435	0.01	%
	Net Charge-Offs/ (Recoveries)		Average Loans Outstanding		Ratio of Annualized Net Charge-Offs/(Recoveries) to Average Loans
	(Dollars in thousands)
	Three Months Ended March 31, 2023
Commercial and industrial	$	276	$	1,618,330	0.07	%
Commercial real estate	—		7,773,007		—	%
Commercial construction	—		1,134,469		—	%
Small business	(3)		222,543		(0.01)	%
Residential real estate	—		2,056,524		—	%
Home equity	(16)		1,089,056		(0.01)	%
Other consumer (1)	281		32,767		3.48	%
Total	$	538	$	13,926,696	0.02	%

(1)Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances and the associated net charge-offs.

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For purposes of the allowance for credit losses, management segregates the portfolio based upon loans sharing similar risk characteristics. The allocation of the allowance for credit losses is made to each loan category using the analytical techniques and estimation methods described in this Report. While these amounts represent management’s best estimate of credit losses at the evaluation dates, they are not necessarily indicative of either the categories in which actual losses may occur or the extent of such actual losses that may be recognized within each category. Each of these loan categories possess unique risk characteristics that are considered when determining the appropriate level of allowance for each segment. The total allowance is available to absorb losses from any segment of the loan portfolio.

The following table sets forth the allocation of the allowance for credit losses by loan category at the dates indicated:

Table 7 - Summary of Allocation of Allowance for Credit Losses

	March 31 2024						December 31 2023
	Allowance Amount		Allowance Amount as a Percentage of Total Allowance		Category of Loan as a Percentage of Total Loans		Allowance Amount		Allowance Amount as a Percentage of Total Allowance		Category of Loan as a Percentage of Total Loans
	(Dollars in thousands)
Commercial and industrial	$	20,489	13.9	%	11.0	%	$	19,243	13.5	%	11.1	%
Commercial real estate	77,929		53.0	%	56.6	%	74,148		52.2	%	56.3	%
Commercial construction	7,573		5.2	%	5.8	%	7,683		5.4	%	6.0	%
Small business	4,028		2.7	%	1.8	%	3,963		2.8	%	1.8	%
Residential real estate	24,180		16.5	%	16.9	%	23,637		16.6	%	16.9	%
Home equity	12,042		8.2	%	7.7	%	12,797		9.0	%	7.7	%
Other consumer	707		0.5	%	0.2	%	751		0.5	%	0.2	%
Total	$	146,948	100.0	%	100.0	%	$	142,222	100.0	%	100.0	%

To determine if a loan should be charged-off, all possible sources of repayment are analyzed. Possible sources of repayment include the potential for future cash flows, the value of the Bank’s collateral, and the strength of co-makers or guarantors. When available information confirms that specific loans or portions thereof are uncollectible, these amounts are promptly charged-off against the allowance for credit losses and any recoveries of such previously charged-off amounts are credited to the allowance.

Regardless of whether a loan is unsecured or collateralized, the Company charges off the amount of any confirmed loan loss in the period when the loans, or portions of loans, are deemed uncollectible. For troubled, collateral-dependent loans, loss-confirming events may include an appraisal or other valuation that reflects a shortfall between the value of the collateral and the carrying value of the loan or receivable, or a deficiency balance following the sale of the collateral.

For additional information regarding the Company’s allowance for credit losses, see Note 3 "Loans, Allowance for Credit Losses and Credit Quality" within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report.

Federal Home Loan Bank Stock The FHLB is a cooperative that provides services to its member banking institutions. The primary reason for the FHLB of Boston membership is to gain access to a reliable source of wholesale funding as a tool to manage liquidity and interest rate risk. The purchase of stock in the FHLB is a requirement for a member to gain access to funding. The Company either purchases additional FHLB stock or is subject to redemption of FHLB stock proportional to the volume of funding received. The Company views the holdings as a necessary long-term investment for the purpose of balance sheet liquidity and not for investment return. The Company's investments in FHLB of Boston stock increased to $46.3 million at March 31, 2024 compared to $43.6 million at December 31, 2023.

    Goodwill and Other Intangible Assets Goodwill and other intangible assets were $1.0 billion at both March 31, 2024 and December 31, 2023.

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The Company typically performs its annual goodwill impairment testing during the third quarter of the year, unless certain indicators suggest earlier testing to be warranted. Accordingly, the Company last performed its annual goodwill impairment testing during the third quarter of 2023, and determined that goodwill was not impaired as of August 31, 2023. Other intangible assets are also reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. There were no other events or changes during the first quarter of 2024 that indicated impairment of goodwill and other intangible assets.

Cash Surrender Value of Life Insurance Policies The Bank holds life insurance policies for the purpose of offsetting its future obligations to its employees under its retirement and benefits plans. The cash surrender value of life insurance policies was $298.4 million at March 31, 2024 compared to $297.4 million at December 31, 2023.

The Company recorded tax exempt income from life insurance policies of $1.9 million for each of the three months ended March 31, 2024 and 2023. There were $263,000 in gains on life insurance benefits recorded for the three months ended March 31, 2024 and $11,000 for the three months ended March 31, 2023.

Deposits As of March 31, 2024, total deposits were $15.0 billion, representing an $177.7 million, or 1.2%, increase from December 31, 2023. This increase was primarily driven by municipal deposit inflows and consumer demand for higher cost time deposits, partially offset by seasonal business deposit outflows. Though some level of product remixing persists, total noninterest bearing demand deposits comprised 29.71% of total deposits at March 31, 2024. The total cost of deposits was 1.48% and 0.59% for the three months ended March 31, 2024 and 2023, respectively.

The Company's deposits are comprised primarily of core deposits (demand, savings and money market), as well as time deposits. The Company's ratio of core deposits to total deposits represented 83.2% and 84.6% of total deposits as of March 31, 2024 and December 31, 2023, respectively, with the decrease driven primarily by core deposit outflows in conjunction with growth in higher yielding time deposits. In addition, the Company may also utilize brokered deposit sources, as needed, with balances of $91.0 million and $100.9 million outstanding at March 31, 2024 and December 31, 2023, respectively.

The Company's deposit accounts are insured to the maximum extent permitted by the Deposit Insurance Fund which is administered by the Federal Deposit Insurance Corporation ("FDIC"). The FDIC offers insurance coverage on deposits up to the federally insured limit of $250,000. The Company participates in the IntraFi Network, allowing it to provide easy access to multi-million dollar FDIC deposit insurance protection on certificate of deposit and money market investments for consumers, businesses and public entities. This channel allows the Company to access a reciprocal deposit exchange that can be used to benefit customers seeking increased FDIC insurance protection, and amounted to $933.0 million and $959.1 million at March 31, 2024 and December 31, 2023, respectively. The estimated balance of uninsured deposits at the Bank were $4.7 billion and $4.6 billion as of March 31, 2024 and December 31, 2023, respectively. Included in these amounts are $798.9 million and $720.5 million of collateralized deposits, which offer additional protection.

Borrowings  The Company's borrowings consist of both short-term and long-term borrowings and provide the Bank with one of its primary sources of funding. Maintaining available borrowing capacity provides the Bank with a contingent source of liquidity. Borrowings were $1.0 billion at March 31, 2024, representing a decrease of $193.0 million as compared to December 31, 2023. This decrease was driven primarily by a reduction in Federal Home Loan Bank borrowings of $143.0 million, in conjunction with deposit balance growth during the quarter. Additionally, the Company fully redeemed its outstanding subordinated debentures with an aggregate principal amount of $50.0 million during the quarter.

The Company had $8.5 billion of assets pledged as collateral against borrowings at both March 31, 2024 and December 31, 2023, respectively. These assets are primarily pledged to the FHLB of Boston and the Federal Reserve Bank of Boston.

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Capital Resources On March 21, 2024 the Company’s Board of Directors declared a cash dividend of $0.57 per share to shareholders of record as of the close of business on April 1, 2024. This dividend was paid on April 5, 2024.

The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and the Bank’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of Total, Tier 1 Capital and Common Equity Tier 1 Capital (as defined for regulatory purposes) to risk weighted assets (as defined for regulatory purposes) and Tier 1 Capital to average assets (as defined for regulatory purposes). At March 31, 2024 and December 31, 2023, the Company and the Bank exceeded the minimum requirements for all applicable ratios that were in effect during the respective periods. The Company’s and the Bank’s capital amounts and ratios are presented in the following table, along with the applicable minimum requirements as of each date indicated:

Table 8 - Company and Bank's Capital Amounts and Ratios 

	Actual				For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount			Ratio		Amount			Ratio
	March 31, 2024
	(Dollars in thousands)
Company (consolidated)
Total capital (to risk weighted assets)	$	2,217,952	15.57	%	$	1,139,815	≥	8.0	%	N/A			N/A
Common equity tier 1 capital (to risk weighted assets)	2,017,183		14.16	%	641,146		≥	4.5	%	N/A			N/A
Tier 1 capital (to risk weighted assets)	2,017,183		14.16	%	854,861		≥	6.0	%	N/A			N/A
Tier 1 capital (to average assets)	2,017,183		10.95	%	736,772		≥	4.0	%	N/A			N/A
Bank
Total capital (to risk weighted assets)	$	2,192,088	15.38	%	$	1,139,927	≥	8.0	%	$	1,424,908	≥	10.0	%
Common equity tier 1 capital (to risk weighted assets)	2,052,319		14.40	%	641,209		≥	4.5	%	926,190		≥	6.5	%
Tier 1 capital (to risk weighted assets)	2,052,319		14.40	%	854,945		≥	6.0	%	1,139,927		≥	8.0	%
Tier 1 capital (to average assets)	2,052,319		11.12	%	738,358		≥	4.0	%	922,948		≥	5.0	%
	December 31, 2023
	(Dollars in thousands)
Company (consolidated)
Total capital (to risk weighted assets)	$	2,268,863	15.91	%	$	1,140,554	≥	8.0	%	N/A			N/A
Common equity tier 1 capital (to risk weighted assets)	2,022,873		14.19	%	641,562		≥	4.5	%	N/A			N/A
Tier 1 capital (to risk weighted assets)	2,022,873		14.19	%	855,416		≥	6.0	%	N/A			N/A
Tier 1 capital (to average assets)	2,022,873		10.96	%	737,984		≥	4.0	%	N/A			N/A
Bank
Total capital (to risk weighted assets)	$	2,183,436	15.32	%	$	1,140,550	≥	8.0	%	$	1,425,687	≥	10.0	%
Common equity tier 1 capital (to risk weighted assets)	2,048,426		14.37	%	641,559		≥	4.5	%	926,696		≥	6.5	%
Tier 1 capital (to risk weighted assets)	2,048,426		14.37	%	855,412		≥	6.0	%	1,140,550		≥	8.0	%
Tier 1 capital (to average assets)	2,048,426		11.10	%	738,055		≥	4.0	%	922,568		≥	5.0	%

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    In addition to the minimum risk-based capital requirements outlined in the table above, the Company is required to maintain a minimum capital conservation buffer, in the form of common equity, in order to avoid restrictions on capital distributions and discretionary bonuses. The required amount of the capital conservation buffer is 2.5%. At March 31, 2024, the Company's capital levels exceeded the buffer.

Dividend Restrictions The Company is subject to capital and dividend requirements administered by federal and state bank regulators, and the Company will not declare a cash dividend that would cause the Company to violate regulatory requirements. The Company is, in the ordinary course of business, dependent upon the receipt of cash dividends from the Bank to pay cash dividends to shareholders and satisfy the Company’s other cash needs. Federal and state law impose limits on capital distributions by the Bank. Massachusetts-chartered banks, such as the Bank, may declare from net profits cash dividends not more frequently than quarterly and non-cash dividends at any time. No dividends may be declared, credited, or paid if the Bank’s capital stock would be impaired. Massachusetts Bank Commissioner approval is required if the total of all dividends declared by the Bank in any calendar year would exceed the total of its net profits for that year combined with its retained net profits of the preceding two years, less any required transfer to surplus or a fund for the retirement of any preferred stock. Dividends paid by the Bank to the Company totaled $47.9 million and $66.4 million for the three months ended March 31, 2024 and 2023, respectively.

Trust Preferred Securities In accordance with the applicable accounting standard related to variable interest entities, the common stock of trusts which have issued trust preferred securities has not been included in the consolidated financial statements of the Company. At both March 31, 2024 and December 31, 2023 there were $61.0 million in trust preferred securities included in the Tier 2 capital of the Company for regulatory reporting purposes pursuant to the Federal Reserve's capital adequacy guidelines.

Investment Management The following table presents total assets under administration and number of accounts held by the Rockland Trust Investment Management Group at the following dates:

Table 9 - Assets Under Administration

	March 31 2024		December 31 2023		March 31 2023
	(Dollars in thousands)
Assets under administration	$	6,804,032	$	6,537,905	$	6,145,134
Number of trust, fiduciary and agency accounts	6,595		6,550		6,527

The Company's Investment Management Group provides investment management and trust services to individuals, institutions, small businesses, and charitable institutions.

Accounts maintained by the Investment Management Group consist of managed and nonmanaged accounts. Managed accounts are those for which the Bank is responsible for administration and investment management and/or investment advice, while nonmanaged accounts are those for which the Bank acts solely as a custodian or directed trustee. The Bank receives fees dependent upon the level and type of service(s) provided. The Investment Management Group generated gross fee revenues of $9.1 million and $8.2 million for the three months ended March 31, 2024 and 2023, respectively. Total assets under administration at March 31, 2024 were $6.8 billion, including $396.9 million of investment solutions designed by Rockland Trust that are administered and executed through its agreement with LPL Financial ("LPL"), compared to $6.5 billion and $383.0 million, respectively, at December 31, 2023. The Company also has a subsidiary that is a registered investment advisor, Bright Rock Capital Management, LLC ("Bright Rock"), which provides institutional quality investment management services to both institutional and high net worth clients. Included in these same amounts as of March 31, 2024 and December 31, 2023 are assets under administration of $484.8 million and $449.8 million, respectively, related to Bright Rock.

The administration of trust and fiduciary accounts is monitored by the Trust Committee of the Bank’s Board of Directors. The Trust Committee has delegated administrative responsibilities to three committees, one for investments, one for administration, and one for operations, all of which are comprised of Investment Management Group officers who meet no less than quarterly.

The Bank has an agreement with LPL and its affiliates and their insurance subsidiary, LPL Insurance Associates, Inc., to offer the sale of mutual fund shares, unit investment trust shares, general securities, fixed and variable annuities and life insurance. Registered representatives who are both employed by the Bank and licensed and contracted with LPL are onsite to

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offer these products to the Bank’s customer base. These same agents are also approved and appointed with various other Broker General Agents for the purposes of processing insurance solutions for clients. Retail investments and insurance revenue was $861,000 and $1.6 million for the three months ended March 31, 2024 and 2023, respectively.

RESULTS OF OPERATIONS

    The following table provides a summary of results of operations for the three months ended March 31, 2024 and 2023:

Table 10 - Summary of Results of Operations

	Three Months Ended March 31
	2024			2023
	(Dollars in thousands, except per share data)
Net income	$	47,770		$	61,247
Diluted earnings per share	$	1.12		$	1.36
Return on average assets	1.00		%	1.30		%
Return on average equity	6.63		%	8.63		%
Net interest margin	3.23		%	3.79		%

Net Interest Income The amount of net interest income is affected by changes in interest rates and by the volume, mix, and interest rate sensitivity of interest-earning assets and interest-bearing liabilities.

On a fully tax equivalent basis ("FTE"), net interest income for the first quarter of 2024 was $138.6 million, representing a decrease of $21.5 million, or 13.4%, when compared to the first quarter of 2023, as rising deposit costs continued to counter the benefit of repriced assets, resulting in a reduction in net interest margin of 56 basis points to 3.23% for the first quarter of 2024.

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The following tables present the Company’s average balances, net interest income, interest rate spread, and net interest margin for the three months ended March 31, 2024 and 2023. Nontaxable income from loans and securities is presented on a FTE basis by adjusting tax-exempt income upward by an amount equivalent to the prevailing income tax rate that would have been paid if the income had been fully taxable.

Table 11 - Average Balance, Interest Earned/Paid & Average Yields Quarter-to-Date

	Three Months Ended March 31
	2024						2023
	Average Balance		Interest Earned/ Paid		Yield/Rate		Average Balance		Interest Earned/ Paid		Yield/Rate
	(Dollars in thousands)
Interest-earning assets
Interest-earning deposits with banks, federal funds sold, and short term investments	$	50,583	$	483	3.84	%	$	73,608	$	665	3.66	%
Securities
Securities - trading	4,779		—		—	%	4,095		—		—	%
Securities - taxable investments	2,867,460		14,231		2.00	%	3,117,024		15,309		1.99	%
Securities - nontaxable investments (1)	190		2		4.23	%	193		2		4.20	%
Total securities	$	2,872,429	$	14,233	1.99	%	$	3,121,312	$	15,311	1.99	%
Loans held for sale	7,095		104		5.90	%	2,474		34		5.57	%
Loans (2)
Commercial and industrial (1)	1,559,978		27,629		7.12	%	1,618,330		26,572		6.66	%
Commercial real estate (1)	8,110,813		102,054		5.06	%	7,773,007		89,581		4.67	%
Commercial construction	842,480		15,421		7.36	%	1,134,469		16,467		5.89	%
Small business	257,022		4,160		6.51	%	222,543		3,219		5.87	%
Total commercial	10,770,293		149,264		5.57	%	10,748,349		135,839		5.13	%
Residential real estate	2,418,617		26,083		4.34	%	2,056,524		19,358		3.82	%
Home equity	1,094,856		18,444		6.78	%	1,089,056		16,244		6.05	%
Total consumer real estate	3,513,473		44,527		5.10	%	3,145,580		35,602		4.59	%
Other consumer	30,669		609		7.99	%	32,767		577		7.14	%
Total loans	$	14,314,435	$	194,400	5.46	%	$	13,926,696	$	172,018	5.01	%
Total interest-earning assets	$	17,244,542	$	209,220	4.88	%	$	17,124,090	$	188,028	4.45	%
Cash and due from banks	177,506						181,402
Federal Home Loan Bank stock	47,203						14,714
Other assets	1,809,640						1,844,556
Total assets	$	19,278,891					$	19,164,762
Interest-bearing liabilities
Deposits
Savings and interest checking accounts	$	5,165,866	$	14,856	1.16	%	$	5,745,357	$	7,473	0.53	%
Money market	2,844,014		15,991		2.26	%	3,243,322		10,393		1.30	%
Time deposits	2,297,219		23,473		4.11	%	1,293,987		4,809		1.51	%
Total interest-bearing deposits	$	10,307,099	$	54,320	2.12	%	$	10,282,666	$	22,675	0.89	%
Borrowings
Federal Home Loan Bank borrowings	$	1,185,296	$	14,631	4.96	%	$	298,413	$	3,644	4.95	%
Junior subordinated debentures	62,858		1,147		7.34	%	62,856		1,001		6.46	%
Subordinated debentures	40,651		508		5.03	%	49,897		617		5.01	%
Total borrowings	$	1,288,805	$	16,286	5.08	%	$	411,166	$	5,262	5.19	%

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Total interest-bearing liabilities	$	11,595,904	$	70,606	2.45	%	$	10,693,832	$	27,937	1.06	%
Noninterest bearing demand deposits	4,439,107						5,219,531
Other liabilities	347,573						374,195
Total liabilities	$	16,382,584					$	16,287,558
Stockholders' equity	2,896,307						2,877,204
Total liabilities and stockholders' equity	$	19,278,891					$	19,164,762
Net interest income (1)			$	138,614					$	160,091
Interest rate spread (3)					2.43	%					3.39	%
Net interest margin (4)					3.23	%					3.79	%
Supplemental information
Total deposits, including demand deposits	$	14,746,206	$	54,320			$	15,502,197	$	22,675
Cost of total deposits					1.48	%					0.59	%
Total funding liabilities, including demand deposits	$	16,035,011	$	70,606			$	15,913,363	$	27,937
Cost of total funding liabilities					1.77	%					0.71	%

(1)The total amount of adjustment to interest income and yield on a FTE basis was $1.2 million and $1.1 million for the three months ended March 31, 2024 and 2023, respectively.

(2)Includes average nonaccruing loans.

(3)Interest rate spread represents the difference between the weighted average yield on interest-earning assets and the weighted average cost of interest-bearing liabilities.

(4)Net interest margin represents annualized net interest income as a percentage of average interest-earning assets.

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The following table presents certain information on a FTE basis regarding changes in the Company’s interest income and interest expense for the periods indicated. For each category of interest-earning assets and interest-bearing liabilities, information is provided with respect to changes attributable to: (1) changes in rate (change in rate multiplied by prior period volume), (2) changes in volume (change in volume multiplied by old rate), and (3) changes in volume/rate (change in volume multiplied by change in rate) which is allocated to the change due to rate column:

Table 12 - Volume Rate Analysis

	Three Months Ended March 31
	2024 Compared To 2023
	Change Due to Rate		Change Due to Volume		Total Change
	(Dollars in thousands)
Income on interest-earning assets
Interest earning deposits, federal funds sold and short term investments	$	26	$	(208)	$	(182)
Securities
Securities - taxable investments	148		(1,226)		(1,078)
Securities - nontaxable investments (1)	—		—		—
Total securities					(1,078)
Loans held for sale	6		64		70
Loans
Commercial and industrial (1)	2,015		(958)		1,057
Commercial real estate (1)	8,580		3,893		12,473
Commercial construction	3,192		(4,238)		(1,046)
Small business	442		499		941
Total commercial					13,425
Residential real estate	3,317		3,408		6,725
Home equity	2,113		87		2,200
Total consumer real estate					8,925
Other consumer	69		(37)		32
Total loans (1)(2)					22,382
Total income of interest-earning assets					$	21,192
Expense of interest-bearing liabilities
Deposits
Savings and interest checking accounts	$	8,137	$	(754)	$	7,383
Money market	6,878		(1,280)		5,598
Time certificates of deposits	14,936		3,728		18,664
Total interest bearing deposits					31,645
Borrowings
Federal Home Loan Bank borrowings	157		10,830		10,987
Long-term borrowings	—		—		—
Junior subordinated debentures	146		—		146
Subordinated debentures	5		(114)		(109)
Total borrowings					11,024
Total expense of interest-bearing liabilities					42,669
Change in net interest income					$	(21,477)

(1)Reflects income determined on a FTE basis. See footnote (1) to Table 11 in this Report for the related adjustments.

(2)Loans include portfolio loans and nonaccrual loans; however, unpaid interest on nonaccrual loans has not been included for purposes of determining interest income.

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Provision For Credit Losses The provision for credit losses represents the charge to expense that is required to maintain an adequate level of allowance for credit losses. The Company recorded a provision for credit losses of $5.0 million and $7.3 million for the three months ended March 31, 2024 and March 31, 2023, respectively.

The Company’s allowance for credit losses, as a percentage of total loans, was 1.03% at March 31, 2024, 1.00% at December 31, 2023, and 1.14% at March 31, 2023. Refer to Note 3, "Loans, Allowance for Credit Losses and Credit Quality" within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report, for further details surrounding the primary drivers of the provision for credit losses for the period.

Noninterest Income The following table sets forth information regarding noninterest income for the periods shown:

Table 13 - Noninterest Income

	Three Months Ended
	March 31				Change
	2024		2023		Amount		%
	(Dollars in thousands)
Deposit account fees	$	6,228	$	5,916	$	312	5.27	%
Interchange and ATM fees	4,452		4,184		268		6.41	%
Investment management and advisory	9,941		9,779		162		1.66	%
Mortgage banking income	796		308		488		158.44	%
Increase in cash surrender value of life insurance policies	1,928		1,854		74		3.99	%
Gain on life insurance benefits	263		11		252		2,290.91	%
Loan level derivative income	80		408		(328)		(80.39)	%
Other noninterest income	6,255		5,782		473		8.18	%
Total	$	29,943	$	28,242	$	1,701	6.02	%

The primary reasons for the variances in the noninterest income categories shown in the preceding table include:

•Deposit account fees increased during the three months ended March 31, 2024, as compared to the same prior year period driven primarily by increased cash management fees.

•Interchange and ATM fees for the three months ended March 31, 2024 increased as compared to the same prior year period due primarily to higher transaction volumes.

•Investment management and advisory income increased driven primarily by higher levels of assets under administration, which increased by $658.9 million, or 10.7%, to $6.8 billion at March 31, 2024 as compared to $6.1 billion at March 31, 2023. This increase was partially offset by higher insurance and retail commission income recognized during the first quarter of 2023 as compared to the current quarter.

•Mortgage banking income increased for the three months ended March 31, 2024 as compared to the same prior year period due to a greater portion of new originations being sold in the secondary market versus being retained in the Company's portfolio.

•Loan level derivative income decreased for the three months ended March 31, 2024 in comparison to the same prior year periods due to lower demand.

•Other noninterest income increased for the three months ended March 31, 2024, primarily attributable to increased FHLB dividend income and realized gains on sales of equity securities, partially offset by discounted purchases of Massachusetts historical tax credits made during the first quarter of 2023 and reduced unrealized gains on equity securities during the first quarter of 2024 compared to the same prior year period.

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Noninterest Expense The following table sets forth information regarding non-interest expense for the periods shown:

Table 14 - Noninterest Expense

	Three Months Ended
	March 31				Change
	2024		2023		Amount		%
	(Dollars in thousands)
Salaries and employee benefits	$	57,174	$	56,975	$	199	0.35	%
Occupancy and equipment expenses	13,467		12,822		645		5.03	%
Data processing & facilities management	2,483		2,527		(44)		(1.74)	%
Software and subscriptions	4,094		2,949		1,145		38.83	%
FDIC assessment	2,982		2,610		372		14.25	%
Debit card expense	2,478		2,171		307		14.14	%
Consulting expense	1,428		2,077		(649)		(31.25)	%
Amortization of intangible assets	1,563		1,815		(252)		(13.88)	%
Other noninterest expenses	14,218		14,715		(497)		(3.38)	%
Total	$	99,887	$	98,661	$	1,226	1.24	%

The primary reasons for the variances in the noninterest expense categories shown in the preceding table include:

•The increase in salaries and employee benefits was primarily attributable to increases in general salaries, incentive programs, medical plan insurance, and seasonal increases in payroll taxes, partially offset by decreased commissions and equity compensation.

•Occupancy and equipment expenses increased for the three months ended March 31, 2024, driven primarily by one-time lease exit costs associated with acquired leased locations as well as increased depreciation expense, partially offset by decreased utilities costs compared to the first quarter of 2023.

•Software and subscriptions increased primarily due to the Company's continued investment in its technology infrastructure.

•FDIC assessment increased compared to the same prior year period primarily due to an increase in the estimated FDIC special assessment recognized by the Company.

•Debit card expense increased due to higher processing fees driven by increased volume.

•Consulting expense decreased for the three months ended March 31, 2024 due primarily to the timing of strategic initiatives.

•Other noninterest expense decreased for the three months ended March 31, 2024, as compared to the same prior year period, primarily due to decreases in legal costs and examination and audit fees, partially offset by increases in card issuance costs and customer fraud reimbursements.

Income Taxes The tax effect of all income and expense transactions is recognized by the Company in each year’s consolidated statements of income, regardless of the year in which the transactions are reported for income tax purposes. The following table sets forth information regarding the Company’s tax provision and applicable tax rates for the periods indicated:

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Table 15 - Tax Provision and Applicable Tax Rates

	Three Months Ended
	March 31
	2024			2023
	(Dollars in thousands)
Combined federal and state income tax provision	$	14,725		$	20,082
Effective income tax rate	23.56		%	24.69		%
Blended statutory tax rate	27.91		%	27.85		%

The Company’s effective tax rate for the first quarter of 2024 is lower as compared to the year ago period primarily due to lower pre-tax income as well as increased tax benefits from low income housing tax credits. The effective tax rates in the table above are lower than the blended statutory tax rates due to the impact of discrete items, including tax benefits related to low income housing tax credits and equity compensation, as well as certain tax preference assets such as life insurance policies, tax exempt bonds, and federal tax credits.

The Company invests in various low income housing projects, which are real estate limited partnerships that acquire, develop, own and operate low and moderate-income housing developments. As a limited partner in these operating partnerships, the Company will receive tax credits and tax deductions for losses incurred by the underlying properties. The investments are accounted for using the proportional amortization method and will be amortized over various periods through 2040, which represents the period that the tax credits and other tax benefits will be utilized. The total committed investment in these partnerships is $237.3 million, of which $176.8 million had been funded as of March 31, 2024. It is expected that the limited partnership investments will generate a net tax benefit of approximately $4.4 million for the fiscal year 2024 and a total of $34.9 million over the remaining life of the investments from the combination of the tax credits and operating losses.

Risk Management

The Board of Directors has approved an Enterprise Risk Management Policy and Risk Appetite Statement to state the Company’s goals and objectives in identifying, measuring, and managing the risks associated with the Company’s current and near future anticipated size and complexity. Management is responsible for comprehensive enterprise risk management, and continually strives to adopt and implement practices that strike an appropriate balance between risk and reward and permit the achievement of strategic goals in a controlled environment.

The Company has implemented the “three lines of defense” enterprise risk management framework. The first line of defense are the executives in charge of business units, operational areas, and corporate functions who, sometimes assisted by management committees, teams, and working groups, own and manage risks. The second line of defense monitors and provides risk management advice across all risk domains, and is comprised of the enterprise risk management department, with oversight from the Chief Risk Officer. The third line of defense is independent assurance performed by the Chief Internal Auditor, who reports to the Audit Committee of the Company's Board of Directors, and by the Company's internal audit department.

The Board of Directors, with the assistance of its Risk Committee, oversees management’s enterprise risk management practices. As risks must be taken to create value, the Board of Directors has approved a Risk Appetite Statement that defines the acceptable residual risk tolerances for the Company and the nine major risk types identified as having the potential to create significant adverse impacts on the Company, such as financial losses, reputational damage, legal or regulatory actions, failure to achieve strategic objectives, diminished customer experience, and/or cultural erosion. The nine major risk categories identified by the Company and addressed in the Risk Appetite Statement are strategic and emerging risk, culture risk, credit risk, liquidity risk, interest rate risk, operational risk, reputation risk, compliance risk, and technology risk, each of which is discussed below.

Strategic and Emerging Risk   Strategic and emerging risk is the risk arising from adverse strategic or business decisions, misalignment of strategic direction with the Company’s mission and values, failure to execute strategies or tactics, or an inadequate adaptation or lack of responsiveness to industry and/or operating environment changes. Management seeks to mitigate strategic risk through strategic planning, frequent executive review of strategic plan progress, monitoring of competitors and technology, assessment of new products, new branches, and new business initiatives, customer advocacy, and crisis management planning.

Culture Risk   Culture risk is the risk arising from failed leadership and/or ineffective colleague engagement and workplace management that causes the Company to lose sight of core values and, through acts or omissions, damage the

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relationship-based culture that has been one of the foundations of the Company’s consistent success. Management seeks to mitigate culture risk through effective employee relations, leadership that encourages continuous improvement, cultural development and reinforcement of core values, communication of clear ethical and behavioral standards, consistent enforcement of policies and programs, discipline of misbehavior, alignment of incentives and compensation, and by promoting diversity, equity, and inclusion.

Credit Risk   Credit risk is the risk arising from the failure of a borrower or a counterparty to a contract to make payments as agreed, and includes the risks arising from inadequate collateral and mismanagement of loan concentrations. While the collateral securing loans may be sufficient in some cases to recover the amount due, in other cases the Company may experience significant credit losses that could have an adverse effect on its operating results. The Company makes assumptions and judgments about the collectability of its loan portfolio, including the creditworthiness of its borrowers and counterparties and the value of collateral for the repayment of loans. For further discussion regarding the credit risk and the credit quality of the Company’s loan portfolio, see Note 3, “Loans, Allowance for Credit Losses and Credit Quality” within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report.

Liquidity Risk      Liquidity risk is the risk arising from the Company being unable to meet obligations when due. Liquidity risk includes the inability to access funding sources or manage fluctuations in available funding levels. Liquidity risk also results from a failure to recognize or address market condition changes that affect the ability to liquidate assets quickly with minimal value loss.

The Company’s primary sources of funds are deposits, borrowings, and the amortization, prepayment, and maturities of loans and securities. The Bank utilizes its extensive branch network to access retail customers who provide a base of in-market core deposits. These funds are principally comprised of demand deposits, interest checking accounts, savings accounts, and money market accounts. Interest rates, economic conditions, and competitive factors greatly influence deposit levels.

The Company’s primary measure of short-term liquidity is the Total Basic Surplus/Deficit as a percentage of assets. This ratio, which is an analysis of the relationship between liquid assets plus available FHLB funding, less short-term liabilities relative to total assets, was within policy limits at March 31, 2024. The Total Basic Surplus/Deficit measure is affected primarily by changes in deposits, securities and short-term investments, loans, and borrowings. An increase in deposits, without a corresponding increase in nonliquid assets, will improve the Total Basic Surplus/Deficit measure, whereas, an increase in loans, with no increase in deposits, will decrease the measure. Other factors affecting the Total Basic Surplus/Deficit include FHLB collateral requirements, securities portfolio changes, and the mix of deposits.

The Company prioritizes core deposits as a primary funding source and continues to maintain a variety of available liquidity sources, including FHLB advances, and Federal Reserve borrowing capacity. These funding sources serve as a contingent source of liquidity and, when profitable lending and investment opportunities exist, the Company may access them to provide the liquidity needed to grow the balance sheet. The amount and type of assets that the Company has available to pledge affects the Company's FHLB and Federal Reserve borrowing capacity. For example, a prime one-to-four family residential loan may provide 75 cents of borrowing capacity for every $1.00 pledged, whereas a pledged commercial loan may increase borrowing capacity in a lower amount. The Company’s lending decisions, therefore, can also affect its liquidity position.

The Company may also have the ability to raise additional funds through the issuance of equity or unsecured debt privately or publicly and has done so in the past. Additionally, the Company is able to enter into repurchase agreements or acquire brokered deposits at its discretion. The availability and cost of equity or debt on an unsecured basis is dependent on many factors, including the Company’s financial position, the market environment, and the Company’s credit rating. The Company monitors the factors that could affect its ability to raise liquidity through these channels.

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The following table depicts current and unused liquidity capacity from various sources as of the dates indicated:

Table 16 - Liquidity Sources

	March 31, 2024				December 31, 2023
	Outstanding		Additional Borrowing Capacity		Outstanding		Additional Borrowing  Capacity
	(Dollars in thousands)
Federal Home Loan Bank of Boston (1)	$	962,535	$	1,703,694	$	1,105,541	$	1,577,746
Federal Reserve Bank of Boston (2)	—		3,218,550		—		3,078,179
Unpledged Securities	—		1,173,065		—		1,187,882
Line of Credit	—		85,000		—		85,000
Junior subordinated debentures (3)	62,858		—		62,858		—
Subordinated debt (3)	—		—		49,980		—
Reciprocal deposits (3)	933,045		—		959,068		—
Brokered deposits (3)	90,954		—		100,923		—
	$	2,049,392	$	6,180,309	$	2,278,370	$	5,928,807

(1)Loans with a carrying value of $3.9 billion at both March 31, 2024 and December 31, 2023 were pledged to the FHLB of Boston.

(2)Loans with a carrying value of $4.7 billion and $4.6 billion at March 31, 2024 and December 31, 2023, respectively, were pledged to the Federal Reserve Bank of Boston.

(3)The additional borrowing capacity has not been assessed for these categories.

In addition to customary operational liquidity practices, the Board of Directors and management recognize the need to establish reasonable guidelines to manage a heightened liquidity risk environment. Catalysts for elevated liquidity risk can be Company-specific issues and/or systemic industry-wide events. Management is therefore responsible for instituting systems and controls designed to provide advanced detection of potentially significant funding shortages, establishing methods for assessing and monitoring risk levels, and instituting responses that may alleviate or circumvent a potential liquidity crisis. Management has established a Liquidity Contingency Plan to provide a framework to detect potential liquidity problems and appropriately address them in a timely manner. In a period of perceived heightened liquidity risk, the Liquidity Contingency Plan provides for the establishment of a Liquidity Crisis Task Force to monitor the potential for a liquidity crisis and execute an appropriate response.

The Company continually monitors both on and off balance sheet liquidity sources to understand vulnerabilities and when adjustments to the balance between sources and uses of funds may be necessary. Management regularly performs various liquidity stress testing scenarios and other analyses to assess potential liquidity outflows or funding concerns resulting from economic or industry disruptions, volatility in the financial markets, or unforeseen credit events. The results of these scenarios are used to inform the Company's Liquidity Contingency Plan and help provide the basis for its liquidity needs.

Market and Interest Rate Risk   Market risk refers to the risk of potential losses arising from changes in interest rates and the value of investments due to market conditions or other external factors or events. Interest rate risk is the most significant market risk to which the Company has exposure to due to the nature of its operations.

Interest rate risk is the sensitivity of income to changes in interest rates. Interest rate changes, as well as fluctuations in the level and duration of assets and liabilities, affect net interest income, which is the Company’s primary source of revenue. Interest rate risk arises directly from the Company’s core banking activities. In addition to directly affecting net interest income, changes in the level of interest rates can also affect the amount of loans originated, the timing of cash flows on loans and securities, and the fair value of securities and derivatives, and have other effects.

Management strives to control interest rate risk within limits approved by the Board of Directors that reflect the Company’s tolerance for interest rate risk over short-term and long-term horizons. The Company attempts to manage interest rate risk by identifying, quantifying, and, where appropriate, hedging exposure. If assets and liabilities do not re-price simultaneously and in equal volume, the potential for interest rate exposure exists. It is the Company's objective to maintain stability in the growth of net interest income through the maintenance of an appropriate mix of interest-earning assets and

77

interest-bearing liabilities and, when necessary within limits management deems prudent, with hedging instruments such as interest rate swaps, floors, and caps.

The Company quantifies its interest rate exposures using net interest income simulation models, as well as simpler gap analysis, and an Economic Value of Equity analysis. Key assumptions in these analyses relate to behavior of interest rates and behavior of the Company’s deposit and loan customers. The most material assumptions relate to the prepayment of mortgage assets (including mortgage loans and mortgage-backed securities) and the life and sensitivity of non-maturity deposits (e.g., demand deposit, savings, and money market accounts). In the case of prepayment of mortgage assets, assumptions are derived from published median prepayment estimates for comparable mortgage loans. The risk of prepayment tends to increase when interest rates fall. Since future prepayment behavior of loan customers is uncertain, interest rate sensitivity of loans cannot be determined with precision and actual behavior may differ from assumptions to a significant degree. Non-maturity deposits, assumptions over customer behavior, shifts in deposits categories, and magnitude of impact to the cost of deposits all may differ from what is currently anticipated by the models or analyses.

Given the volatility associated with market rates, and the uncertainty surrounding future rate movements, management has been proactive in achieving a more neutral interest rate risk position as compared to the prior year. In 2023, management continued to increase the duration of its assets by marginally increasing exposure to fixed rate loans while deposit attrition reduced the amount of rate sensitive cash on hand at the Federal Reserve Bank. The Company runs several scenarios to quantify and effectively assist in managing interest rate risk, including instantaneous parallel shifts in market rates as well as gradual (12-24 months) shifts in market rates, and may also include other alternative scenarios as management deems necessary given the interest rate environment. The results of those scenarios are summarized in the following table:

Table 17 - Interest Rate Sensitivity

	March 31
	2024		2023
	Year 1		Year 1
Parallel rate shocks (basis points)
-300	(3.3)	%	(6.3)	%
-200	(1.4)	%	(3.7)	%
-100	(0.3)	%	(1.7)	%
+100	—	%	0.8	%
+200	(0.2)	%	1.4	%
+300	(0.2)	%	2.3	%
+400	(0.1)	%	3.3	%
Gradual rate shifts (basis points)
-200 over 12 months	0.1	%	(1.5)	%
-100 over 12 months	0.1	%	(0.7)	%
+200 over 12 months	(0.4)	%	0.7	%
+400 over 24 months	n/a		0.7	%

The results depicted in the table above are dependent on material assumptions, such as prepayment rates, decay rates, pricing decisions on loans and deposits, and other factors, which management believes are reasonable. These assumptions may be impacted by customer preferences or competitive influences and therefore actual experience may differ from the assumptions in the model. Accordingly, although the tables provide an indication of the Company's interest rate risk exposure at a particular point in time, such measurements are not intended to and do not provide a precise forecast of the effect of changes in market interest rates, and actual results may differ.

The most significant market factors affecting the Company’s net interest income during the three months ended March 31, 2024 were the shape of the U.S. Government securities and interest rate swap yield curve, the U.S. prime interest rate, the secured overnight financing rate ("SOFR"), and other interest rates offered on long-term fixed rate loans.

78

The Company manages the interest rate risk inherent in both its loan and borrowing portfolios by using interest rate swap agreements and interest rate caps and floors. An interest rate swap is an agreement in which one party agrees to pay a floating rate of interest on a notional principal amount in exchange for receiving a fixed rate of interest on the same notional amount for a predetermined period from the other party. Interest rate caps and floors are agreements where one party agrees to pay a floating rate of interest on a notional principal amount for a predetermined period to a second party if certain market interest rate thresholds are realized. While interest is paid or received in swap, cap, and floors agreements, the notional principal amount is not exchanged. The Company may also manage the interest rate risk inherent in its mortgage banking operations by entering into forward sales contracts under which the Company agrees to deliver whole mortgage loans to various investors. See Note 6, “Derivative and Hedging Activities” within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report for additional information regarding the Company’s derivative financial instruments.

Movements in foreign currency rates or commodity prices do not directly or materially affect the Company's earnings. Movements in equity prices may have a modest impact on earnings by affecting the volume of activity or the amount of fees from investment-related business lines. See Note 2, “Securities” within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report.

Operational Risk Operational risk is the risk arising from human error or misconduct, transaction errors or delays, inadequate or failed internal systems or processes, data unavailability, loss, or poor quality, or adverse external events. Operational risk includes fraud risk and model risk. Potential operational risk exposure exists throughout the Company. The continued effectiveness of colleagues and operational infrastructure are integral to mitigating operational risk, and any shortcomings subject the Company to risks that vary in size, scale and scope.

Reputation Risk Reputation risk is the risk arising from negative public opinion of the Company and the Bank. Management seeks to mitigate reputational risk through actions that include a structured process of customer complaint resolution and ongoing reputational monitoring.

Regulatory and Compliance Risk Regulatory and Compliance risk is the risk arising from violations of laws or regulations, non-conformance with prescribed practices, internal bank policies and procedures, or ethical standards. Compliance risk includes consumer compliance risk, legal risk, and regulatory compliance risk. Management seeks to mitigate compliance risk through compliance training and regulatory change management processes.

Technology and Cyber Risk Technology and Cyber risk is the risk of losses or other impacts arising from the failure of technology systems to function in accordance with expectations and business requirements. Technology risks include technical failures, unlawful tampering with technical systems, cyber security, terrorist activities, ineffectiveness or exposure due to interruption in third party support. Management seeks to mitigate technology risk through appropriate security and controls over data and its technological environment. The Bank manages cybersecurity threats proactively and maintains robust controls to protect its critical systems and data by investing in secure, reliable and resilient technology infrastructure, fostering a culture of technology risk awareness and continuously improving its technology risk management practices.

Contractual Obligations, Commitments, Contingencies, and Off-Balance Sheet Financial Information

Off-Balance Sheet Arrangements There were no material changes in off-balance sheet arrangements during the three months ended March 31, 2024.

See Note 6, "Derivative and Hedging Activities" and Note 10, "Commitments and Contingencies" within the Notes to Consolidated Financial Statements included in Part I. Item 1 of this Report for more information relating to the Company's other off-balance sheet financial instruments.

Contractual Obligations, Commitments, and Contingencies There were no material changes in contractual obligations, commitments, or contingencies during the three months ended March 31, 2024.

79

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Information required by this Item 3 is included in the "Risk Management" section of Part I. Item 2 "Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Report and is incorporated herein by reference.

Item 4. Controls and Procedures

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures.  The Company carried out an evaluation, under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer along with the Company’s Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures, as such term is defined under Rules 13a-15(e) and 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended. Based upon that evaluation, the Company’s Chief Executive Officer along with the Company’s Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this quarterly report.

Changes in Internal Control over Financial Reporting. There were no changes in the Company's internal control over financial reporting that occurred during the first quarter of 2024 that have materially affected or are reasonably likely to materially affect the Company’s internal control over financial reporting.

PART II. OTHER INFORMATION

Item  1. Legal Proceedings

At March 31, 2024, the Bank was involved in pending lawsuits that arose in the ordinary course of business. Management has reviewed these pending lawsuits with legal counsel and has taken into consideration the view of counsel as to their outcome. In the opinion of management, the final disposition of pending lawsuits is not expected to have a material adverse effect on the Company’s financial position or results of operations.

Item 1A. Risk Factors

    The section titled Risk Factors in Part I, Item 1A of the 2023 Form 10-K, includes a discussion of the material risks and uncertainties the Company faces, any one or more of which could have a material adverse effect on the Company's business, results of operations, or financial condition (including capital and liquidity). As of the date of this Report, there have been no material changes with regard to the Risk Factors disclosed in Item 1A of the 2023 Form 10-K which are incorporated herein by reference.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(a) Not applicable.

(b) Not applicable.

(c) The following table sets forth information regarding the Company’s repurchases of its common stock during the three months ended March 31, 2024:

	Issuer Purchases of Equity Securities
	Total Number of Shares Purchased (1)	Average Price Paid Per Share (2)		Total Number of Shares Purchased as Part of Publicly Announced Plan or Program	Maximum Number of Shares (or Approximate Dollar Value) That May Yet Be Purchased Under the Plan or Program (3)
Period
January 1 to January 31, 2024	372,900	$	59.59	372,900	$	8,820,096
February 1 to February 29, 2024	171,477	$	54.88	159,366	$	—
March 1 to March 31, 2024	2,955	$	49.44	—	$	—
Total	547,332	$	58.06	532,266

(1)Of these shares, 12,111 shares and 2,955 shares were surrendered in February 2024 and March 2024, respectively, in connection with the vesting of equity compensation grants to satisfy related tax withholding obligations.

(2)During the three months ended March 31, 2024, the average price per share of repurchased shares was $58.22 and the average price per share of surrendered shares related to tax withholding obligations was $52.50.

(3)On October 19, 2023, the Company announced a stock buyback plan which authorized repurchases by the Company of up to $100 million in common stock. Repurchases under the plan were made from time to time on the open market and in privately negotiated transactions, including through the use of trading plans intended to qualify under Rule 10b5-1 under the Exchange Act. The 532,266 shares repurchased under the program during the three months ended March 31, 2024 represented full completion of the program.

80

Item 3. Defaults Upon Senior Securities - None.

Item 4. Mine Safety Disclosures - Not Applicable.

Item 5. Other Information

(a)None

(b)None

(c)Insider Rule 10b5-1 Trading Plans. During the quarter ended March 31, 2024, none of our directors or executive officers adopted or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as those terms are defined in Item 408 of Regulation S-K.

Item 6. Exhibits

Exhibit Index

No. Exhibit

31.1	Section 302 Certification of Sarbanes-Oxley Act of 2002 is attached hereto.*
31.2	Section 302 Certification of Sarbanes-Oxley Act of 2002 is attached hereto.*
32.1	Section 906 Certification of Sarbanes-Oxley Act of 2002 is attached hereto.+
32.2	Section 906 Certification of Sarbanes-Oxley Act of 2002 is attached hereto.+
101	The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.*
104	Cover page interactive data file (formatted as inline XBRL and contained in Exhibit 101).*

* Filed herewith

+	Furnished herewith
#	Management contract or compensatory plan or arrangement

81

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

INDEPENDENT BANK CORP.

(registrant)

May 8, 2024	/s/ Jeffrey J. Tengel
	Jeffrey J. Tengel President and Chief Executive Officer (Principal Executive Officer)

May 8, 2024	/s/ Mark J. Ruggiero
	Mark J. Ruggiero Chief Financial Officer (Principal Financial Officer)

82

EX-31.1

Exhibit 31.1

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO RULE 13A-14 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Jeffrey J. Tengel, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Independent Bank Corp.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 8, 2024

/s/ JEFFREY J. TENGEL

Jeffrey J. Tengel

Chief Executive Officer/President

EX-31.2

Exhibit 31.2

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO RULE 13A-14 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark J. Ruggiero, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Independent Bank Corp.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 8, 2024

/s/  MARK J. RUGGIERO

Mark J. Ruggiero

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION

PURSUANT TO 18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Independent Bank Corp. (the “Company”) on Form 10-Q for the period ended March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned hereby certifies, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that to the undersigned’s best knowledge and belief:

(a)the Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 as amended; and

(b)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 8, 2024

Independent Bank Corp.

(“Company”)

/s/ JEFFREY J. TENGEL

Jeffrey J. Tengel

Chief Executive Officer/President

A signed original of this written statement required by Section 906 has been provided to Independent Bank Corp. and will be retained by Independent Bank Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION

PURSUANT TO 18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Independent Bank Corp. (the “Company”) on Form 10-Q for the period ended March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned hereby certifies, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that to the undersigned’s best knowledge and belief:

(a)the Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 as amended; and

(b)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 8, 2024

Independent Bank Corp.

(“Company”)

/s/  MARK J. RUGGIERO

Mark J. Ruggiero

Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to Independent Bank Corp. and will be retained by Independent Bank Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	May 06, 2024	Dec. 31, 2023
Entity Information [Line Items]
Document Transition Report	false
Common Stock, Shares, Outstanding	42,452,457		42,873,187
Security Exchange Name	NASDAQ
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	INDB
Entity Incorporation, State or Country Code	MA
Entity File Number	1-9047
Document Quarterly Report	true
Entity Registrant Name	Independent Bank Corp.
Entity Tax Identification Number	04-2870273
Entity Central Index Key	0000776901
Document Type	10-Q
Document Period End Date	Mar. 31, 2024
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Address, Address Line One	2036 Washington Street,
Entity Address, City or Town	Hanover,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02339
Entity Shell Company	false
City Area Code	781
Local Phone Number	878-6100
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		42,465,754
Mailing Address [Member]
Entity Information [Line Items]
Entity Address, Address Line One	288 Union Street,
Entity Address, City or Town	Rockland,
Entity Address, State or Province	MA

XML

Consolidated Balance Sheets (Unaudited) - USD ($)		Mar. 31, 2024		Dec. 31, 2023
Assets
Cash and due from banks		$ 165,331,000		$ 178,861,000
Interest-earning deposits with banks		55,985,000		45,469,000
Securities
Trading		4,759,000		4,987,000
Equity		22,858,000		22,510,000
Debt Securities, Available-for-Sale, Excluding Accrued Interest		1,272,831,000		1,334,256,000
Held to maturity (fair value $1,383,621 and $1,417,608)		1,545,267,000		1,569,107,000
Total securities		2,845,715,000		2,930,860,000
Loans held for sale (at fair value)		11,340,000		6,368,000
Loans
Total loans		14,330,594,000	[1]	14,278,070,000
Less: allowance for credit losses		(146,948,000)	[2]	(142,222,000)
Net loans		14,183,646,000		14,135,848,000
Federal Home Loan Bank stock		46,304,000		43,557,000
Bank premises and equipment, net		192,563,000		193,049,000
Goodwill		985,072,000		985,072,000
Other intangible assets		16,626,000		18,190,000
Cash surrender value of life insurance policies		298,352,000		297,387,000
Other assets		523,679,000		512,712,000
Total assets		19,324,613,000		19,347,373,000
Deposits
Noninterest-bearing demand deposits		4,469,820,000		4,567,083,000
Savings and interest checking accounts		5,196,195,000		5,298,913,000
Money market		2,944,221,000		2,818,072,000
Time certificates of deposit		2,432,985,000		2,181,479,000
Total deposits		15,043,221,000		14,865,547,000
Borrowings
Federal Home Loan Bank borrowings		962,535,000		1,105,541,000
Junior Subordinated Notes		62,858,000		62,858,000
Subordinated Debt				49,980,000
Total borrowings		1,025,393,000		1,218,379,000
Other liabilities		371,791,000		368,196,000
Total liabilities		16,440,405,000		16,452,122,000
Commitments and contingencies		0		0
Stockholders' equity
Preferred stock, $0.01 par value, authorized: 1,000,000 shares, outstanding: none		0		0
Common stock, $0.01 par value, authorized: 75,000,000 shares, issued and outstanding: 42,452,457 shares at March 31, 2024 and 42,873,187 shares at December 31, 2023 (includes 215,412 and 162,812 shares of unvested participating restricted stock awards, respectively)		422,000		427,000
Value of shares held in rabbi trust at cost: 82,042 shares at March 31, 2024 and 80,222 shares at December 31, 2023		(3,403,000)		(3,298,000)
Deferred compensation and other retirement benefit obligations		3,403,000		3,298,000
Additional paid in capital		1,902,063,000		1,932,163,000
Retained earnings		1,101,061,000		1,077,488,000
Accumulated other comprehensive loss, net of tax		(119,338,000)		(114,827,000)
Total stockholders’ equity		2,884,208,000		2,895,251,000
Total liabilities and stockholders' equity		19,324,613,000		19,347,373,000
Commercial And Industrial [Member]
Loans
Total loans		1,580,041,000	[1]	1,579,986,000
Less: allowance for credit losses		(20,489,000)	[2]	(19,243,000)
Commercial Real Estate [Member]
Loans
Total loans		8,108,836,000	[1]	8,041,508,000
Less: allowance for credit losses		(77,929,000)	[2]	(74,148,000)
Construction Loans [Member]
Loans
Total loans		828,900,000	[1]	849,586,000
Less: allowance for credit losses		(7,573,000)	[2]	(7,683,000)
Small Business [Member]
Loans
Total loans		261,690,000	[1]	251,956,000
Less: allowance for credit losses		(4,028,000)	[2]	(3,963,000)
Residential Real Estate [Member]
Loans
Total loans		2,420,705,000	[1]	2,424,754,000
Less: allowance for credit losses		(24,180,000)	[2]	(23,637,000)
Home Equity Loan [Member]
Loans
Total loans	[1]	1,100,586,000
Less: allowance for credit losses		(12,042,000)	[2]	(12,797,000)
Consumer Portfolio Segment [Member]
Loans
Total loans		29,836,000		32,654,000
Less: allowance for credit losses		(707,000)	[2]	(751,000)
Senior Lien [Member] | Home Equity Loan [Member]
Loans
Total loans		507,356,000		518,706,000
Junior Lien [Member] | Home Equity Loan [Member]
Loans
Total loans		$ 593,230,000		$ 578,920,000

[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] Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $59.3 million and $52.7 million as of March 31, 2024 and March 31, 2023, respectively.

XML

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available-for-Sale, Amortized Cost	$ 1,402,389	$ 1,459,862
Held to Maturity, Fair Value, Total	$ 1,383,621	$ 1,417,608
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	75,000,000	75,000,000
Common Stock, Shares, Outstanding	42,452,457	42,873,187
Common Stock, Shares, Issued	42,452,457	42,873,187
Common Stock, unvested restricted Stock awards	215,412	162,812
Shares Held in Rabbi Trust	82,042	80,222
Junior Subordinated Debt [Member]
Unamortized debt issuance expense	$ 30	$ 30
Subordinated Debt [Member]
Unamortized debt issuance expense		$ 20

XML

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest income
Interest and fees on loans	$ 193,226	$ 170,926
Interest Income, Securities, Operating, Taxable	14,231	15,309
Nontaxable interest and dividends on securities	1	1
Interest on loans held for sale	104	34
Interest on federal funds sold and short-term investments	483	665
Total interest and dividend income	208,045	186,935
Interest expense
Interest on deposits	54,320	22,675
Interest on borrowings	16,286	5,262
Total interest expense	70,606	27,937
Net interest income	137,439	158,998
Provision for credit losses	5,000	7,250
Net interest income after provision for credit losses	132,439	151,748
Noninterest income
Deposit account fees	6,228	5,916
Interchange and ATM fees	4,452	4,184
Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions	9,941	9,779
Mortgage banking income	796	308
Bank Owned Life Insurance Income	1,928	1,854
Gain Realized on Life Insurance Policies	(263)	(11)
Loan level derivative income	80	408
Other noninterest income	6,255	5,782
Total noninterest income	29,943	28,242
Noninterest expenses
Salaries and employee benefits	57,174	56,975
Occupancy and equipment expenses	13,467	12,822
Data processing & facilities management	2,483	2,527
Professional Fees	1,428	2,077
Software Maintenance	4,094	2,949
Debit card expense	2,478	2,171
Amortization of Intangible Assets	1,563	1,815
FDIC assessment	2,982	2,610
Other noninterest expenses	14,218	14,715
Total noninterest expenses	99,887	98,661
Income before income taxes	62,495	81,329
Current Federal, State and Local, Tax Expense (Benefit)	14,725	20,082
Net income	$ 47,770	$ 61,247
Basic earnings per share (in dollars per share)	$ 1.12	$ 1.36
Diluted earnings per share (in dollars per share)	$ 1.12	$ 1.36
Weighted average common shares (basic) (in shares)	42,553,714	45,004,100
Common shares equivalents (in shares)	12,876	19,564
Weighted average common shares (diluted) (in shares)	42,566,590	45,023,664
Retained Earnings [Member]
Noninterest expenses
Net income	$ 47,770	$ 61,247
Cash dividends declared per common share (in dollars per share)	$ 0.57	$ 0.55

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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income		$ 47,770	$ 61,247
Other comprehensive (loss) income, net of tax
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax		(3,008)	17,068
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(1,488)	10,163
Net change in other comprehensive income for defined benefit postretirement plans	[1]	(15)	(92)
Total other comprehensive (loss) income		(4,511)	27,139
Total comprehensive income		$ 43,259	$ 88,386

[1] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 12 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2023 Form 10-K.

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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Outstanding	Common Stock	Value of Shares Held in Rabbi Trust at Cost	Deferred Compensation and Other Retirement Benefit Obligations	Additional Paid in Capital		Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		45,641,238
Net income	$ 61,247							$ 61,247
Other comprehensive income	27,139								$ 27,139
Cash dividends declared per common share (in dollars per share)								$ 0.55
Common dividend declared	(24,351)							$ (24,351)
Proceeds from exercise of stock options, net of cash paid		1,666
Stock Repurchased During Period, Value, as a result of Stock Options Exercised	80					$ 80
Stock based compensation	1,672					1,672
Restricted stock awards issued, net of awards surrendered		81,075
Restricted stock awards issued, net of awards surrendered	(1,110)		$ 0			(1,110)
Shares issued under direct stock purchase plan		7,881
Shares issued under direct stock purchase plan	642		0			642
Stock Repurchased During Period, Shares		(1,617,033)
Stock Repurchased During Period, Value	(121,111)		(16)			(121,095)
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				$ (59)	$ 59
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Mar. 31, 2023	2,830,909		439	(3,286)	3,286	1,995,077		971,338	(135,945)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from exercise of stock options, net of cash paid			0
Common Stock, Shares, Outstanding		44,114,827
Sales and Excise Tax Payable	$ 1,200
Common Stock, Shares, Outstanding	42,873,187	42,873,187
Net income	$ 47,770							$ 47,770
Other comprehensive income	(4,511)								(4,511)
Cash dividends declared per common share (in dollars per share)								$ 0.57
Common dividend declared	(24,197)							$ (24,197)
Stock based compensation	1,300					1,300
Restricted stock awards issued, net of awards surrendered		101,245
Restricted stock awards issued, net of awards surrendered	(766)					(766)
Shares issued under direct stock purchase plan		10,291
Shares issued under direct stock purchase plan	658					658
Stock Repurchased During Period, Shares		(532,266)
Stock Repurchased During Period, Value	(31,297)		(5)			(31,292)	[1]
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				(105)	105
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Mar. 31, 2024	$ 2,884,208		$ 422	$ (3,403)	$ 3,403	$ 1,902,063		$ 1,101,061	$ (119,338)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding	42,452,457	42,452,457
Sales and Excise Tax Payable	$ 278

[1] Inclusive of $278,000 and $1.2 million impact of excise tax attributable to shares repurchased under the share repurchase program during the three months ended March 31, 2024 and March 31, 2023, respectively

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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Common Stock, Shares, Outstanding	42,452,457		42,873,187
Stockholders' Equity Attributable to Parent	$ 2,884,208	$ 2,830,909	$ 2,895,251	$ 2,886,701
Held In Rabbi Trust At Cost [Member]
Stockholders' Equity Attributable to Parent	$ (3,403)	$ (3,286)	(3,298)	(3,227)
Retained Earnings
Cash dividends declared per common share (in dollars per share)	$ 0.57	$ 0.55
Stockholders' Equity Attributable to Parent	$ 1,101,061	$ 971,338	1,077,488	934,442
Deferred Compensation, Share-based Payments [Member]
Stockholders' Equity Attributable to Parent	3,403	3,286	3,298	3,227
AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	(119,338)	(135,945)	(114,827)	(163,084)
Common Stock [Member]
Stockholders' Equity Attributable to Parent	422	439	427	455
Additional Paid-in Capital [Member]
Stockholders' Equity Attributable to Parent	$ 1,902,063	$ 1,995,077	$ 1,932,163	$ 2,114,888
Common Class A [Member]
Common Stock, Shares, Outstanding	42,452,457	44,114,827	42,873,187	45,641,238

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Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 47,770,000	$ 61,247,000
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	10,289,000	9,633,000
Change In Unamortized Net Loan Costs And Premiums	(270,000)	(529,000)
Accretion of acquired loans	(147,000)	(305,000)
Provision for credit losses	5,000,000	7,250,000
Deferred income tax expense	2,584,000	644,000
Equity Securities, FV-NI, Gain (Loss)	(609,000)	(368,000)
Gain (Loss) on Disposition of Property Plant Equipment	12,000	79,000
Sale and Leaseback Transaction, Gain (Loss), Net	0	145,000
Stock based compensation	1,300,000	1,672,000
Increase in cash surrender value of life insurance policies	(1,928,000)	(1,854,000)
Gain Realized on Life Insurance Policies	(263,000)	(11,000)
Operating Lease, Payments	(3,447,000)	(3,432,000)
Operating lease termination payments	(389,000)	0
Change in Fair Value on Loans Held for Sale	(70,000)	17,000
Net change in:
Trading assets	228,000	(581,000)
Loans held for sale	(4,902,000)	1,656,000
Other assets	(1,025,000)	17,337,000
Increase (Decrease) in Other Operating Liabilities	(2,988,000)	(40,844,000)
Total adjustments	3,375,000	(9,781,000)
Net cash provided by operating activities	51,145,000	51,466,000
Cash flows provided by (used in) investing activities
Payments to Acquire Equity Securities, FV-NI	165,000	136,000
Proceeds from maturities and principal repayments of securities available for sale	57,399,000	15,694,000
Proceeds from maturities and principal repayments of securities held to maturity	24,861,000	27,877,000
Net purchases of Federal Home Loan Bank stock	(2,747,000)	(35,085,000)
Investments in low income housing projects	(6,519,000)	(13,669,000)
Purchases of life insurance policies	(91,000)	(91,000)
Net increase in loans	(52,381,000)	(18,981,000)
Purchases of bank premises and equipment	(4,464,000)	(4,219,000)
Proceeds from the sale of bank premises and equipment	22,000	52,000
Net cash provided by (used in) investing activities	15,915,000	(28,558,000)
Cash flows (used in) provided by financing activities
Net increase in time deposits	251,465,000	259,590,000
Net decrease in other deposits	(73,832,000)	(866,445,000)
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net	(143,000,000)	879,000,000
Maturities of Subordinated Debt	(50,000,000)	0
Proceeds from Stock Options Exercised	0	80,000
Restricted stock awards issued, net of awards surrendered	(792,000)	(1,110,000)
Proceeds from shares issued under direct stock purchase plan	651,000	642,000
Payments for shares repurchased under share repurchase program	(30,986,000)	(119,951,000)
Common dividends paid	(23,580,000)	(25,103,000)
Net cash (used in) provided by financing activities	(70,074,000)	126,703,000
Net (decrease) increase in cash and cash equivalents	(3,014,000)	149,611,000
Cash and cash equivalents at beginning of year	224,330,000	352,933,000
Cash and cash equivalents at end of period	221,316,000	502,544,000
Supplemental schedule of noncash investing and financing activities
Net increase in capital commitments relating to low income housing project investments	8,308,000	564,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1,434,000	$ 2,642,000

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Basis of Presentation

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

BASIS OF PRESENTATION

Independent Bank Corp. (the “Company”) is a state chartered, federally registered bank holding company, incorporated in 1985. The Company is the sole stockholder of Rockland Trust Company (“Rockland Trust” or the “Bank”), a Massachusetts trust company chartered in 1907.

All material intercompany balances and transactions have been eliminated in consolidation. Certain previously reported amounts have been reclassified to conform to the current year’s presentation.

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. Results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any other interim period.

For further information, refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the Securities and Exchange Commission (the "2023 Form 10-K").

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Securities

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure

SECURITIES

Trading Securities

The Company had trading securities of $4.8 million and $5.0 million as of March 31, 2024 and December 31, 2023, respectively. These securities are held in a rabbi trust and will be used for future payments associated with the Company’s non-qualified 401(k) Restoration Plan and Non-qualified Deferred Compensation Plan.

Equity Securities

The Company had equity securities of $22.9 million and $22.5 million as of March 31, 2024 and December 31, 2023, respectively. These securities consist primarily of mutual funds held in a rabbi trust and will be used for future payments associated with the Company’s supplemental executive retirement plans.

The following table represents a summary of the gains and losses recognized within non-interest income and non-interest expense within the consolidated statements of income that relate to equity securities for the periods indicated:

	Three Months Ended
	March 31
	2024		2023
	Dollars in thousands
Net gains recognized during the period on equity securities	$	609	$	368
Less: net gains recognized during the period on equity securities sold during the period	435		1
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	174	$	367

Available for Sale Securities

The following table summarizes the amortized cost, allowance for credit losses, and fair value of available for sale securities and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) at the dates indicated:

	March 31, 2024										December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value
	(Dollars in thousands)
U.S. government agency securities	$	230,013	$	—	$	(24,337)	$	—	$	205,676	$	230,198	$	—	$	(23,060)	$	—	$	207,138
U.S. treasury securities	774,714		—		(55,876)		—		718,838		824,597		—		(55,495)		—		769,102
Agency mortgage-backed securities	309,560		25		(38,980)		—		270,605		314,269		24		(37,246)		—		277,047
Agency collateralized mortgage obligations	34,644		—		(2,556)		—		32,088		35,713		6		(2,530)		—		33,189
State, county, and municipal securities	195		—		(4)		—		191		195		—		(5)		—		190
Pooled trust preferred securities issued by banks and insurers	1,180		—		(144)		—		1,036		1,188		—		(170)		—		1,018
Small business administration pooled securities	52,083		—		(7,686)		—		44,397		53,702		—		(7,130)		—		46,572
Total available for sale securities	$	1,402,389	$	25	$	(129,583)	$	—	$	1,272,831	$	1,459,862	$	30	$	(125,636)	$	—	$	1,334,256

Excluded from the table above is accrued interest on available for sale securities of $3.8 million and $3.4 million at March 31, 2024 and December 31, 2023, respectively, which is included within other assets on the consolidated balance sheets. Additionally, the Company did not record any write-offs of accrued interest income on available for sale securities during the three months ended March 31, 2024 and 2023. Furthermore, no securities held by the Company were delinquent on contractual payments nor were any securities placed on non-accrual status at March 31, 2024 and December 31, 2023.

When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The Company had no sales of securities available for sale during three months ended March 31, 2024 and 2023, and therefore no gains or losses were realized during the periods presented.

The following tables show the gross unrealized losses and fair value of the Company’s available for sale securities in an unrealized loss position as of the dates indicated. These available for sale securities are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position:

	March 31, 2024
		Less than 12 months				12 months or longer				Total
	# of  holdings	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
U.S. government agency securities	9	$	—	$	—	$	205,676	$	(24,337)	$	205,676	$	(24,337)
U.S. treasury securities	16	—		—		718,838		(55,876)		718,838		(55,876)
Agency mortgage-backed securities	125	857		(8)		267,985		(38,972)		268,842		(38,980)
Agency collateralized mortgage obligations	12	1,075		(11)		31,013		(2,545)		32,088		(2,556)
State, county, and municipal securities	1	191		(4)		—		—		191		(4)
Pooled trust preferred securities issued by banks and insurers	1	—		—		1,036		(144)		1,036		(144)
Small business administration pooled securities	8	—		—		44,397		(7,686)		44,397		(7,686)
Total	172	$	2,123	$	(23)	$	1,268,945	$	(129,560)	$	1,271,068	$	(129,583)
	December 31, 2023
		Less than 12 months				12 months or longer				Total
	# of  holdings	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
U.S. government agency securities	9	$	—	$	—	$	207,138	$	(23,060)	$	207,138	$	(23,060)
U.S. treasury securities	17	—		—		769,102		(55,495)		769,102		(55,495)
Agency mortgage-backed securities	115	1,091		(11)		273,447		(37,235)		274,538		(37,246)
Agency collateralized mortgage obligations	12	339		(2)		31,682		(2,528)		32,021		(2,530)
State, county, and municipal securities	1	190		(5)		—		—		190		(5)
Pooled trust preferred securities issued by banks and insurers	1	—		—		1,018		(170)		1,018		(170)
Small business administration pooled securities	8	—		—		46,572		(7,130)		46,572		(7,130)
Total	163	$	1,620	$	(18)	$	1,328,959	$	(125,618)	$	1,330,579	$	(125,636)

The Company does not intend to sell these investments and has determined, based upon available evidence, that it is more likely than not that the Company will not be required to sell each security before the recovery of its amortized cost basis. In addition, management does not believe that any of the securities are impaired due to reasons of credit quality. As a result, the Company did not recognize a provision for credit losses on these investments during the three months ended March 31, 2024 and 2023. The Company made this determination by reviewing various qualitative and quantitative factors regarding each investment category, such as current market conditions, extent and nature of changes in fair value, issuer rating changes and trends, volatility of earnings, and current analysts’ evaluations.

As a result of the Company’s review of these qualitative and quantitative factors, the causes of the impairments listed in the table above by category were as follows at March 31, 2024:

•U.S. Government Agency Securities, U.S. Treasury Securities, Agency Mortgage-Backed Securities, Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities: These portfolios have contractual terms that generally do not permit the issuer to settle the securities at a price less than the current par value of the investment. The decline in market value of these securities is attributable to changes in interest rates and not credit quality. Additionally, these securities are implicitly guaranteed by the U.S. Government or one of its agencies.

•State, County and Municipal Securities: This portfolio has contractual terms that generally do not permit the issuer

to settle the securities at a price less than the current par value of the investment. The decline in market value of

these securities is attributable to changes in interest rates and not credit quality.

•Pooled Trust Preferred Securities: This portfolio consists of one security which is performing. The unrealized loss on this security is attributable to the illiquid nature of the trust preferred market in the current economic and regulatory environment. Management evaluates collateral credit and instrument structure, including current and expected deferral and default rates and timing. In addition, discount rates are determined by evaluating comparable spreads observed currently in the market for similar instruments.

Held to Maturity Securities

The following table summarizes the amortized cost, fair value and allowance for credit losses of held to maturity securities and the corresponding amounts of gross unrealized gains and losses recognized at the dates indicated:

	March 31, 2024										December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value
	(Dollars in thousands)
U.S. government agency securities	$	29,086	$	—	$	(843)	$	—	$	28,243	$	29,521	$	—	$	(1,113)	$	—	$	28,408
U.S. treasury securities	100,732		—		(9,922)		—		90,810		100,712		—		(9,177)		—		91,535
Agency mortgage-backed securities	819,912		61		(71,372)		—		748,601		829,431		175		(65,878)		—		763,728
Agency collateralized mortgage obligations	465,016		—		(71,758)		—		393,258		477,517		—		(69,606)		—		407,911
Single issuer trust preferred securities issued by banks	1,500		—		(128)		—		1,372		1,500		—		(127)		—		1,373
Small business administration pooled securities	129,021		—		(7,684)		—		121,337		130,426		384		(6,157)		—		124,653
Total held to maturity securities	$	1,545,267	$	61	$	(161,707)	$	—	$	1,383,621	$	1,569,107	$	559	$	(152,058)	$	—	$	1,417,608

Substantially all held to maturity securities held by the Company are guaranteed by the U.S. federal government or other government sponsored agencies and have a long history of no credit losses. As a result, management has determined these securities to have a zero loss expectation and therefore the Company did not record a provision for estimated credit losses on any held to maturity securities during the three months ended March 31, 2024 and 2023. Excluded from the table above is accrued interest on held to maturity securities of $4.5 million and $4.3 million at March 31, 2024 and December 31, 2023, respectively, which is included within other assets on the consolidated balance sheets. Additionally, the Company did not record any write-offs of accrued interest income on held to maturity securities during the three months ended March 31, 2024 and 2023. Furthermore, no securities held by the Company were delinquent on contractual payments nor were any securities placed on non-accrual status at March 31, 2024 and December 31, 2023.

When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The Company had no sales of held to maturity securities during the three months ended March 31, 2024 and 2023, and therefore no gains or losses were realized for such periods.

The Company monitors the credit quality of held to maturity securities through the use of credit ratings. Credit ratings are monitored by the Company on at least a quarterly basis. As of March 31, 2024, all held to maturity securities held by the Company were rated investment grade or higher.

The actual maturities of certain available for sale or held to maturity securities may differ from the contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. A schedule of the contractual maturities of securities available for sale and securities held to maturity at March 31, 2024 is presented below:

	Due in one year or less				Due after one year to five years				Due after five to ten years				Due after ten years				Total
	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(Dollars in thousands)
Available for sale securities
U.S. government agency securities	$	—	$	—	$	199,221	$	178,800	$	30,792	$	26,876	$	—	$	—	$	230,013	$	205,676
U.S. treasury securities	197,408		192,434		577,306		526,404		—		—		—		—		774,714		718,838
Agency mortgage-backed securities	1		1		140,616		125,614		43,861		38,155		125,082		106,835		309,560		270,605
Agency collateralized mortgage obligations	—		—		—		—		2,837		2,586		31,807		29,502		34,644		32,088
State, county, and municipal securities	—		—		195		191		—		—		—		—		195		191
Pooled trust preferred securities issued by banks and insurers	—		—		—		—		—		—		1,180		1,036		1,180		1,036
Small business administration pooled securities	—		—		—		—		—		—		52,083		44,397		52,083		44,397
Total available for sale securities	$	197,409	$	192,435	$	917,338	$	831,009	$	77,490	$	67,617	$	210,152	$	181,770	$	1,402,389	$	1,272,831
Held to maturity securities
U.S. government agency securities	$	29,086	$	28,243	$	—	$	—	$	—	$	—	$	—	$	—	$	29,086	$	28,243
U.S. treasury securities	—		—		99,740		89,992		992		818		—		—		100,732		90,810
Agency mortgage-backed securities	—		—		448,783		414,620		181,710		159,656		189,419		174,325		819,912		748,601
Agency collateralized mortgage obligations	—		—		63,456		58,528		19,228		16,930		382,332		317,800		465,016		393,258
Single issuer trust preferred securities issued by banks	—		—		1,500		1,372		—		—		—		—		1,500		1,372
Small business administration pooled securities	—		—		—		—		7,688		7,048		121,333		114,289		129,021		121,337
Total held to maturity securities	$	29,086	$	28,243	$	613,479	$	564,512	$	209,618	$	184,452	$	693,084	$	606,414	$	1,545,267	$	1,383,621
Total	$	226,495	$	220,678	$	1,530,817	$	1,395,521	$	287,108	$	252,069	$	903,236	$	788,184	$	2,947,656	$	2,656,452

Included in the table above are $25.5 million of callable securities at March 31, 2024.

The carrying value of securities pledged to secure public funds, trust deposits, and for other purposes, as required or permitted by law, was $1.6 billion and $1.7 billion at March 31, 2024 and December 31, 2023, respectively.

At March 31, 2024 and December 31, 2023, the Company had no investments in obligations of individual states, counties, or municipalities which exceeded 10% of consolidated stockholders’ equity.

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Loans, Allowance for Credit Losses and Credit Quality

3 Months Ended

Mar. 31, 2024

Receivables [Abstract]

Loans, Allowance for Credit Losses and Credit Quality

LOANS, ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY

Loans Held for Investment and Allowance for Credit Losses

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 March 31, 2024
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home  Equity		Other Consumer		Total
Allowance for credit losses
Beginning balance	$	19,243	$	74,148	$	7,683	$	3,963	$	23,637	$	12,797	$	751	$	142,222
Charge-offs	—		—		—		(109)		—		—		(772)		(881)
Recoveries	85		—		—		39		—		133		350		607
Provision for (release of) credit losses	1,161		3,781		(110)		135		543		(888)		378		5,000
Ending balance (1)	$	20,489	$	77,929	$	7,573	$	4,028	$	24,180	$	12,042	$	707	$	146,948
	Three Months Ended March 31, 2023
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home  Equity		Other Consumer		Total
Allowance for credit losses
Beginning balance	$	27,559	$	77,799	$	10,762	$	2,834	$	20,973	$	11,504	$	988	$	152,419
Charge-offs	(281)		—		—		(28)		—		—		(506)		(815)
Recoveries	5		—		—		31		—		16		225		277
Provision for (release of) credit losses	9,649		(1,601)		(1,514)		501		(519)		908		(174)		7,250
Ending balance (1)	$	36,932	$	76,198	$	9,248	$	3,338	$	20,454	$	12,428	$	533	$	159,131

(1)Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $59.3 million and $52.7 million as of March 31, 2024 and March 31, 2023, respectively.

The balance of allowance for credit losses increased to $146.9 million as of March 31, 2024 compared to $142.2 million at December 31, 2023, driven primarily by specific reserve allocations as well as net loan growth during the three months ended March 31, 2024.

For the purpose of estimating the allowance for credit losses, management segregated the loan portfolio into the portfolio segments detailed in the above tables.  Each of these loan categories possesses unique risk characteristics that are considered when determining the appropriate level of allowance for each segment.  Some of the characteristics unique to each loan category include:

Commercial Portfolio

•Commercial and Industrial: Consists of revolving, nonrevolving, and term loan obligations extended to business and corporate enterprises for the purpose of financing working capital and/or capital investment.  Collateral generally consists of accounts receivable, inventory, plant and equipment, real estate, or other business assets. The primary source of repayment is operating cash flow and, secondarily, liquidation of assets.

•Commercial Real Estate: Consists of mortgage loans to finance investment in real property such as multi-family residential, commercial/retail, office, industrial, hotels, educational and healthcare facilities, as well as other specific use properties and is inclusive of owner-occupied commercial properties.  Loans are typically written with amortizing payment structures.  Collateral values are determined based upon third party appraisals and evaluations.  Permissible loan to value ratios at origination are governed by Company policy and regulatory guidelines. The primary source of repayment is cash flow from operating leases and rents and, secondarily, liquidation of assets.

•Commercial Construction: Consists of short-term construction loans, revolving and nonrevolving credit lines and construction/permanent loans to finance the acquisition, development and construction or rehabilitation of real property. 

Project types include residential land development, one-to-four family, condominium, and multi-family home construction, commercial/retail, office, industrial, hotels, educational and healthcare facilities as well as other specific use properties.  Loans may be written with non-amortizing or hybrid payment structures depending upon the type of project.  Collateral values are determined based upon third party appraisals and evaluations.  Permissible loan to value ratios at origination are governed by Company policy and regulatory guidelines.  Repayment sources vary depending upon the type of project and may consist of proceeds from the sale or lease of units, operating cash flows or liquidation of other assets.

•Small Business: Consists of revolving, term loan and mortgage obligations extended to sole proprietors and small businesses for purposes of financing working capital and/or capital investment.  Collateral generally consists of pledges of business assets including, but not limited to, accounts receivable, inventory, plant and equipment, or real estate if applicable.  The primary source of repayment is operating cash flows and, secondarily, liquidation of assets.

For the commercial portfolio the Company typically obtains personal guarantees for payment from individuals holding material ownership interests in the borrowing entities.

Consumer Portfolio

•Residential Real Estate: Residential mortgage loans held in the Company’s portfolio are made to borrowers who demonstrate the ability to make scheduled payments with full consideration to underwriting factors such as current and expected income, employment status, current assets, other financial resources, credit history and the value of the collateral.  Collateral consists of mortgage liens on one-to-four family residential properties.  Residential mortgage loans also include loans to construct owner-occupied one-to-four family residential properties.

•Home Equity: Home equity loans and credit lines are made to qualified individuals and are primarily secured by senior or junior mortgage liens on one-to-four family homes, condominiums or vacation homes. Each home equity loan has a fixed rate and is billed in equal payments comprised of principal and interest. The majority of home equity lines of credit have a variable rate and are billed in interest-only payments during the draw period. At the end of the draw period, the home equity line of credit is billed as a percentage of the then outstanding principal balance plus all accrued interest over a predetermined repayment period, as set forth in the note. Additionally, the Company has the option of renewing each line of credit for additional draw periods.  Borrower qualifications include favorable credit history combined with supportive income requirements and combined loan to value ratios within established policy guidelines.

•Other Consumer: Other consumer loan products include personal lines of credit and amortizing loans made to qualified individuals for various purposes such as debt consolidation, personal expenses or overdraft protection.  Borrower qualifications include favorable credit history combined with supportive income and collateral requirements within established policy guidelines.  These loans may be secured or unsecured.

Credit Quality

The Company continually monitors the asset quality of the loan portfolio using all available information. Based on this information, loans demonstrating certain payment issues or other weaknesses may be categorized as adversely risk-rated, delinquent, nonperforming and/or put on nonaccrual status. Additionally, in the course of resolving such loans, the Company may choose to modify the contractual terms of certain loans to match the borrower’s ability to repay the loan based on their current financial condition.

The Company reviews numerous credit quality indicators when assessing the risk in its loan portfolio. For the commercial portfolio, the Company utilizes a 10-point credit risk-rating system, which assigns a risk-grade to each loan obligation based on a number of quantitative and qualitative factors associated with a commercial or small business loan transaction. Factors considered include industry and market conditions, position within the industry, earnings trends, operating cash flow, asset/liability values, debt capacity, guarantor strength, management and controls, financial reporting, collateral, and other considerations. The risk-rating categories for the commercial portfolio are defined as follows:

•Pass: Risk-rating “1” through “6” comprises loans ranging from ‘Substantially Risk Free’ which indicates borrowers are of unquestioned credit standing and the pinnacle of credit quality, well established companies with a very strong financial condition, and loans fully secured by cash collateral, through ‘Acceptable Risk,’ which indicates borrowers may exhibit declining earnings, strained cash flow, increasing or above average leverage and/or weakening market fundamentals that indicate below average asset quality, margins and market share. Collateral coverage is protective.

•Special Mention: Borrowers exhibit potential credit weaknesses or downward trends deserving management’s close attention. If not checked or corrected, these trends will weaken the Company’s asset and position. While potentially weak, currently these borrowers are marginally acceptable; no loss of principal or interest is envisioned.

•Substandard: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt. Loans may be inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy, although no loss of principal is envisioned. However, there is a distinct possibility that a partial loss of interest and/or principal will occur if the deficiencies are not corrected. Collateral coverage may be inadequate to cover the principal obligation.

•Doubtful: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt with the added provision that the weaknesses make collection of the debt in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Serious problems exist to the point where partial loss of principal is likely.

•Loss: Borrowers deemed incapable of repayment. Loans to such borrowers are considered uncollectible and of such little value that continuation as active assets of the Company is not warranted.

The Company utilizes a comprehensive, continuous strategy for evaluating and monitoring commercial credit quality. Initially, credit quality is determined at loan origination and is re-evaluated when subsequent actions, such as renewals, modifications or reviews, occur. Actively managed commercial borrowers are required to provide updated financial information at least annually which is carefully evaluated for any changes in credit quality. Larger loan relationships are subject to a full annual credit review by experienced credit professionals, while continuous portfolio monitoring techniques are employed to evaluate changes in credit quality for smaller loan relationships. Any changes in credit quality are reflected in risk-rating changes. Additionally, the Company retains an independent loan review firm to evaluate the credit quality of the commercial loan portfolio. The independent loan review process achieves significant penetration into the commercial loan portfolio and reports the results of these reviews to the Audit Committee of the Board of Directors on a quarterly basis.

For the Company’s consumer portfolio, the quality of the loan is best indicated by the repayment performance of an individual borrower. As a result, for this portfolio the Company utilizes a pass/default risk-rating system, based on an age analysis (i.e., days past due) associated with each consumer loan. Under this structure, consumer loans less than 90 days past due are assigned a "pass" rating, while any consumer loans 90 days or more past due are assigned a "default" rating.

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:

	March 31, 2024
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving converted to Term		Total (1)
	(Dollars in thousands)
Commercial and industrial
Pass	$	159,082	$	223,301	$	148,288	$	73,012	$	60,865	$	146,495	$	685,258	$	—	$	1,496,301
Special mention	3,160		3,254		1,843		322		9,206		4,024		31,525		—		53,334
Substandard	1,809		—		57		198		—		43		28,299		—		30,406
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial and industrial	$	164,051	$	226,555	$	150,188	$	73,532	$	70,071	$	150,562	$	745,082	$	—	$	1,580,041
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial real estate
Pass	$	193,152	$	1,127,417	$	1,201,044	$	1,304,867	$	1,212,201	$	2,562,542	$	93,048	$	248	$	7,694,519
Special mention	—		61,943		38,590		53,837		44,806		124,614		297		—		324,087
Substandard	6,350		27,358		18,046		22,758		3,894		3,973		—		—		82,379
Doubtful	—		—		—		—		—		7,851		—		—		7,851
Loss	—		—		—		—		—		—		—		—		—
Total commercial real estate	$	199,502	$	1,216,718	$	1,257,680	$	1,381,462	$	1,260,901	$	2,698,980	$	93,345	$	248	$	8,108,836
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial construction
Pass	$	97,558	$	164,784	$	336,768	$	100,371	$	7,971	$	25,184	$	19,398	$	676	$	752,710
Special mention	3,326		18,724		—		5,618		—		—		—		—		27,668

Substandard	10,585		—		18,601		19,336		—		—		—		—		48,522
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial construction	$	111,469	$	183,508	$	355,369	$	125,325	$	7,971	$	25,184	$	19,398	$	676	$	828,900
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Small business
Pass	$	14,707	$	49,885	$	48,880	$	37,682	$	23,538	$	33,246	$	49,943	$	—	$	257,881
Special mention	—		59		5		75		152		182		481		—		954
Substandard	180		520		224		87		461		658		725		—		2,855
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total small business	$	14,887	$	50,464	$	49,109	$	37,844	$	24,151	$	34,086	$	51,149	$	—	$	261,690
Current-period gross write-offs	$	—	$	—	$	28	$	—	$	—	$	—	$	81	$	—	$	109
Residential real estate
Pass	$	29,922	$	497,477	$	633,135	$	399,440	$	183,544	$	674,298	$	—	$	—	$	2,417,816
Default	—		—		—		—		—		2,889		—		—		2,889
Total residential real estate	$	29,922	$	497,477	$	633,135	$	399,440	$	183,544	$	677,187	$	—	$	—	$	2,420,705
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Home equity
Pass	$	4,208	$	27,517	$	37,162	$	54,001	$	48,389	$	145,029	$	778,842	$	3,736	$	1,098,884
Default	—		—		83		—		—		170		1,214		235		1,702
Total home equity	$	4,208	$	27,517	$	37,245	$	54,001	$	48,389	$	145,199	$	780,056	$	3,971	$	1,100,586
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other consumer (2)
Pass	$	66	$	586	$	216	$	981	$	539	$	1,725	$	25,723	$	—	$	29,836
Default	—		—		—		—		—		—		—		—		—
Total other consumer	$	66	$	586	$	216	$	981	$	539	$	1,725	$	25,723	$	—	$	29,836
Current-period gross write-offs	$	763	$	—	$	—	$	—	$	—	$	—	$	9	$	—	$	772
Total	$	524,105	$	2,202,825	$	2,482,942	$	2,072,585	$	1,595,566	$	3,732,923	$	1,714,753	$	4,895	$	14,330,594
Total current-period gross write-offs	$	763	$	—	$	28	$	—	$	—	$	—	$	90	$	—	$	881

	March 31, 2023
	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving converted to Term		Total (1)
	(Dollars in thousands)
Commercial and industrial
Pass	$	153,554	$	262,933	$	122,770	$	94,702	$	54,925	$	85,391	$	811,795	$	—	$	1,586,070
Special mention	—		4,712		705		868		1,608		1,342		24,114		—		33,349
Substandard	—		2,295		1,516		164		377		1		2,936		—		7,289
Doubtful	—		—		—		—		—		—		23,174		—		23,174
Loss	—		—		—		—		—		—		—		—		—
Total commercial and industrial	$	153,554	$	269,940	$	124,991	$	95,734	$	56,910	$	86,734	$	862,019	$	—	$	1,649,882
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	34	$	247	$	—	$	281
Commercial real estate
Pass	$	204,462	$	1,199,328	$	1,459,526	$	1,259,511	$	720,208	$	2,439,424	$	59,810	$	—	$	7,342,269
Special mention	154		52,961		67,200		29,611		13,139		225,673		—		—		388,738

Substandard	3,481		39,208		13,205		5,334		4,038		23,821		—		—		89,087
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial real estate	$	208,097	$	1,291,497	$	1,539,931	$	1,294,456	$	737,385	$	2,688,918	$	59,810	$	—	$	7,820,094
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial construction
Pass	$	90,362	$	461,824	$	266,758	$	89,919	$	62,033	$	4,755	$	21,237	$	—	$	996,888
Special mention	18,431		—		5,889		3,919		—		—		—		—		28,239
Substandard	7,619		11,434		2,130		—		—		—		—		—		21,183
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial construction	$	116,412	$	473,258	$	274,777	$	93,838	$	62,033	$	4,755	$	21,237	$	—	$	1,046,310
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Small business
Pass	$	9,770	$	54,258	$	43,458	$	29,810	$	16,173	$	26,536	$	42,746	$	—	$	222,751
Special mention	—		—		—		158		—		228		527		—		913
Substandard	105		126		113		304		3		686		865		—		2,202
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total small business	$	9,875	$	54,384	$	43,571	$	30,272	$	16,176	$	27,450	$	44,138	$	—	$	225,866
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	28	$	—	$	28
Residential real estate
Pass	$	91,404	$	658,273	$	416,067	$	190,313	$	92,927	$	644,659	$	—	$	—	$	2,093,643
Default	—		—		—		472		157		1,372		—		—		2,001
Total residential real estate	$	91,404	$	658,273	$	416,067	$	190,785	$	93,084	$	646,031	$	—	$	—	$	2,095,644
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Home equity
Pass	$	6,812	$	42,352	$	58,830	$	53,565	$	31,341	$	139,472	$	756,103	$	937	$	1,089,412
Default	—		—		—		—		122		82		1,139		—		1,343
Total home equity	$	6,812	$	42,352	$	58,830	$	53,565	$	31,463	$	139,554	$	757,242	$	937	$	1,090,755
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other consumer (2)
Pass	$	60	$	386	$	1,168	$	926	$	514	$	1,852	$	14,450	$	—	$	19,356
Default	—		—		—		—		6		37		2		—		45
Total other consumer	$	60	$	386	$	1,168	$	926	$	520	$	1,889	$	14,452	$	—	$	19,401
Current-period gross write-offs	$	498	$	—	$	—	$	—	$	—	$	—	$	8	$	—	$	506
Total	$	586,214	$	2,790,090	$	2,459,335	$	1,759,576	$	997,571	$	3,595,331	$	1,758,898	$	937	$	13,947,952
Total current -period gross write-offs	$	498	$	—	$	—	$	—	$	—	$	34	$	283	$	—	$	815

(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.

    For the Company’s consumer portfolio, the quality of the loan is best indicated by the repayment performance of an individual borrower. However, the Company does supplement performance data with current Fair Isaac Corporation (“FICO”) scores and Loan to Value (“LTV”) estimates. Current FICO data is purchased and appended to all consumer loans on a regular basis. In addition, automated valuation services and broker opinions of value are used to supplement original value data for the residential real estate and home equity portfolios, periodically. The following table shows the weighted average FICO scores and the weighted average combined LTV ratios at the dates indicated below:

	March 31 2024		December 31 2023
Residential real estate portfolio
FICO score (re-scored)(1)	755		754
LTV (re-valued)(2)	59.7	%	59.8	%
Home equity portfolio
FICO score (re-scored)(1)	770		770
LTV (re-valued)(2)(3)	43.9	%	43.3	%

(1)The average FICO scores at March 31, 2024 are based upon rescores from March 2024 as available for previously originated loans, or origination score data for loans booked in March 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 March 31, 2024 are based upon updated automated valuations as of February 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.

Unfunded Commitments

Management evaluates the need for a reserve on unfunded lending commitments in a manner consistent with loans held for investment. At March 31, 2024 and December 31, 2023, the Company's estimated reserve for unfunded commitments amounted to $1.5 million and $1.3 million, respectively.

Asset Quality

The Company’s philosophy toward managing its loan portfolios is predicated upon careful monitoring, which stresses early detection and response to delinquent and default situations. Delinquent loans are managed by a team of collection specialists and the Company seeks to make arrangements to resolve any delinquent or default situation over the shortest possible time frame.  As a general rule, loans 90 days or more past due with respect to principal or interest are classified as nonaccrual loans. The Company also may use discretion regarding other loans 90 days or more delinquent if the loan is well secured and/or in process of collection.

The following table shows information regarding nonaccrual loans as of the dates indicated:

	Nonaccrual Balances
	March 31, 2024						December 31, 2023
	With Allowance for Credit Losses		Without Allowance for Credit Losses (1)		Total		With Allowance for Credit Losses		Without Allowance for Credit Losses (1)		Total
	(Dollars in thousands)
Commercial and industrial	$	17,640	$	—	$	17,640	$	19,890	$	298	$	20,188
Commercial real estate	16,361		7,852		24,213		11,911		11,041		22,952
Small business	316		—		316		394		4		398
Residential real estate	9,947		—		9,947		7,634		—		7,634
Home equity	4,805		—		4,805		3,171		—		3,171
Other consumer	20		—		20		40		—		40
Total nonaccrual loans	$	49,089	$	7,852	$	56,941	$	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.

It is the Company's policy to reverse any accrued interest when a loan is put on nonaccrual status, and, as such, the Company did not record any interest income on nonaccrual loans during the three months ended March 31, 2024 and 2023, respectively, except for instances where nonaccrual loans were paid off in excess of the recorded book balance. Total accrued interest reversed against interest income amounted to $385,000 and $80,000 for the three months ended March 31, 2024 and 2023, respectively.

The following table shows information regarding foreclosed residential real estate property at the dates indicated:

	March 31, 2024		December 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	$	1,900	$	1,697

The following tables show the age analysis of past due financing receivables as of the dates indicated:

	March 31, 2024
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables (2)		Amortized Cost >90 Days and  Accruing
	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	8	$	743	2	$	85	2	$	17,555	12	$	18,383	$	1,561,658	$	1,580,041	$	—
Commercial real estate	10	20,582		—	—		5	24,056		15	44,638		8,064,198		8,108,836		—
Commercial construction	1	1,019		—	—		—	—		1	1,019		827,881		828,900		—
Small business	17	539		6	321		1	5		24	865		260,825		261,690		—
Residential real estate	14	3,482		3	248		16	2,641		33	6,371		2,414,334		2,420,705		—
Home equity	17	1,200		3	89		15	1,702		35	2,991		1,097,595		1,100,586		—
Other consumer (1)	415	238		14	31		—	—		429	269		29,567		29,836		—
Total	482	$	27,803	28	$	774	39	$	45,959	549	$	74,536	$	14,256,058	$	14,330,594	$	—

	December 31, 2023
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables (2)		Amortized Cost >90 Days and  Accruing
	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	6	$	398	1	$	17,538	2	$	673	9	$	18,609	$	1,561,377	$	1,579,986	$	—
Commercial real estate	8	14,674		2	8,419		3	7,279		13	30,372		8,011,136		8,041,508		—
Commercial construction	—	—		—	—		—	—		—	—		849,586		849,586		—
Small business	6	400		1	20		6	243		13	663		251,293		251,956		—
Residential real estate	24	6,216		7	2,187		13	1,573		44	9,976		2,414,778		2,424,754		—
Home equity	23	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		—
Total	480	$	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 $5.7 million and $6.4 million at March 31, 2024 and December 31, 2023, respectively. Net unamortized discounts on acquired loans included in the ending balance was $8.5 million and $8.6 million at March 31, 2024 and December 31, 2023, respectively.

Loan Modifications

The following tables present the period end amortized cost basis of loans modified to borrowers experiencing financial difficulty during the three months ended March 31, 2024 and 2023, respectively, disaggregated by class of financing receivable and type of modification granted:

	Three Months Ended March 31, 2024			Three Months Ended March 31, 2023
	Interest Rate Reduction
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Type	(Dollars in thousands)
Small business	$	51	0.02%	$	—	—%
Total	$	51		$	—
	Term Extension
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	9,725	0.62%	$	—	—%
Commercial real estate	3,375		0.04%	2,540		0.03%
Commercial construction	10,644		1.28%	—		—%
Small business	—		—%	105		0.05%
Total	$	23,744		$	2,645
	Other-Than-Insignificant Payment Delay
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	1,809	0.11%	$	2,805	0.17%
Commercial real estate	6,351		0.08%	7,013		0.09%
Total	$	8,160		$	9,818
	Combination - Interest Rate Reduction and Term Extension
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	179	0.01%	$	—	—%
Small business	—		—%	44		0.02%
Home equity	72		0.01%	—		—%
Total	251			44
Grand Total	$	32,206		$	12,507

The following table describes the financial effect of modifications made to borrowers experiencing financial difficulty for the periods indicated:

Three Months Ended March 31, 2024
Term Extension
Loan Category	Financial Effect
Commercial and industrial	Added a weighted-average contractual term of 3 months to the life of the loans
Commercial real estate	Added a weighted-average contractual term of 6 months to the life of the loans
Commercial construction	Added a weighted-average contractual term of 5 months to the life of the loans
Interest Rate Reduction
Loan Category	Financial Effect
Small business	Reduced contractual rate on one loan from 11.00% to 8.20%
Combination - Interest Rate Reduction and Term Extension
Loan Category	Financial Effect
Commercial and industrial	Reduced contractual rate on one loan from 10.10% to 7.20% and added a weighted average contractual term of 1.5 years
Home equity	Reduced contractual rate on one loan from 10.00% to 6.80% and added a weighted-average contractual term of 8.1 years
Three Months Ended March 31, 2023
Term Extension
Loan Category	Financial Effect
Commercial real estate	Added a weighted-average contractual term of 2 months to the life of the loans
Small business	Added a weighted-average contractual term of 4.3 years to the life of the loans
Interest Rate Reduction
Loan Category	Financial Effect
Small business	Reduced weighted-average contractual interest rate from 10.00% to 6.50%

The Company closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the amortized cost and payment status of loans that have been modified in the last 12 months as of March 31, 2024:

	Payment Status (Amortized Cost Basis)
	Current		30-89 Days Past Due		90+ Days Past Due
	(Dollars in thousands)
Loan Type
Commercial and industrial	$	11,963	$	—	$	—
Commercial real estate	27,094		—		136
Small business	159		—		—
Total	$	49,932	$	—	$	136

The Company considers a loan to have defaulted when it reaches 90 days past due. At March 31, 2024 there was one $136,000 commercial real estate loan that defaulted during the three months then ended which was modified with a term extension to a borrower experiencing financial difficulty in the prior 12 months.

At March 31, 2024, the Company had $640,000 in additional commitments to lend to one borrower experiencing financial difficulty, pertaining to a construction loan that was modified during the three months then ended with a term extension.

    Loan modifications to borrowers experiencing financial difficulty are evaluated on a collective basis with loans sharing similar risk characteristics in accordance with the current expected credit loss ("CECL") methodology.

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Borrowings	3 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
Borrowings	BORROWINGS On March 15, 2024 the Company fully redeemed its outstanding subordinated debentures with an aggregate principal amount of $50.0 million. The subordinated debentures were originally issued on March 14, 2019 in a private placement transaction to institutional accredited investors and were set to mature on March 15, 2029 with an option to redeem without penalty at any scheduled date on or after March 15, 2024 with 30 days' notice, which was provided by the Company prior to redemption.

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Stock Based Compensation

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

STOCK BASED COMPENSATION

STOCK BASED COMPENSATION

During the three months ended March 31, 2024, the Company had the following activity related to stock based compensation:

Time Vested Restricted Stock Awards

The Company made the following awards of time vested restricted stock:

Date	Shares Granted	Plan	Grant Date Fair Value Per Share		Vesting Period
2/22/2024	106,200	2023 Omnibus Incentive Plan	$	52.73	Ratably over 3 years from grant date

Performance-Based Restricted Stock Awards

    On February 22, 2024, the Company granted 41,200 performance-based restricted stock awards, representing the maximum number of shares that may be earned under the awards, to certain executive level employees. These performance-based restricted stock awards were issued from the 2023 Omnibus Incentive Plan and were determined to have a grant date fair value per share of $52.73. The number of shares to be vested is contingent upon the Company's attainment of certain performance criteria to be measured at the end of a three-year performance period ending December 31, 2026. The awards will vest upon the earlier of the date on which it is determined if the performance goal is achieved subsequent to the performance period, or March 15, 2027.

    On March 14, 2024, the performance-based restricted stock awards that were awarded on February 18, 2021 vested at 80% of the maximum target shares awarded, or 11,874 shares, net of forfeitures.

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Derivatives and Hedging Activities

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Fair Value

DERIVATIVE AND HEDGING ACTIVITIES

The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally to manage the Company’s interest rate risk. Additionally, the Company enters into interest rate derivatives, foreign exchange contracts and risk participation agreements to accommodate the business requirements of its customers (“customer related positions”). The Company minimizes the market and liquidity risks of customer related positions by entering into similar offsetting positions with broker-dealers. Derivative instruments are carried at fair value in the Company's financial statements. The accounting for changes in the fair value of a derivative instrument is dependent upon whether or not it qualifies as a hedge for accounting purposes, and further, by the type of hedging relationship.

The Company does not enter into proprietary trading positions for any derivatives.

The Company is subject to over-the-counter derivative clearing requirements which require certain derivatives to be cleared through central clearing houses. Accordingly, the Company clears certain derivative transactions through the Chicago Mercantile Exchange Clearing House ("CME"). This clearing house requires the Company to post initial and variation margin to mitigate the risk of non-payment, the latter of which is received or paid daily based on the net asset or liability position of the contracts.

Interest Rate Positions

The Company may utilize various interest rate derivatives as hedging instruments against interest rate risk associated with the Company’s borrowings and loan portfolios. An interest rate derivative is an agreement whereby one party agrees to pay a floating rate of interest on a notional principal amount in exchange for receiving a fixed rate of interest on the same notional amount, for a predetermined period of time, from a second party. The amounts relating to the notional principal amount are not actually exchanged.

The following tables reflect the Company's derivative positions at the dates indicated below for interest rate swaps which qualify as cash flow hedges for accounting purposes:

March 31, 2024
				Weighted Average Rate
	Notional Amount		Average Maturity	Current Rate Received		Pay Fixed Swap Rate		Fair Value
	(in thousands)		(in years)					(in thousands)
Interest rate swaps on borrowings	$	400,000	2.33	5.32	%	3.67	%	$	6,695
				Current Rate Paid		Receive Fixed Swap Rate
Interest rate swaps on loans	800,000		2.40	5.33	%	2.70	%	(34,008)
				Current Rate Paid		Receive Fixed Swap Rate Cap - Floor
Interest rate collars on loans	300,000		1.47	5.43	%	3.09% - 2.01%		(4,679)
Total	$	1,500,000						$	(31,992)
December 31, 2023
				Weighted Average Rate
	Notional Amount		Average Maturity	Current Rate Received		Pay Fixed Swap Rate		Fair Value
	(in thousands)		(in years)					(in thousands)
Interest rate swaps on borrowings	$	400,000	2.58	5.34	%	3.67	%	$	1,901
	Notional Amount		Average Maturity	Current Rate Paid		Receive Fixed Swap Rate		Fair Value
Interest rate swaps on loans	850,000		2.50	5.36	%	2.72	%	(27,350)
				Current Rate Paid		Receive Fixed Swap Rate Cap - Floor
Interest rate collars on loans	350,000		1.48	5.45	%	3.09% - 2.12%		(4,714)
Total	$	1,600,000						$	(30,163)

The maximum length of time over which the Company is currently hedging its exposure to the variability in future cash flows for forecasted transactions related to the payment of variable interest on existing financial instruments is 5.0 years.

For derivative instruments that are designated and qualify as cash flow hedging instruments, the effective portion of the gains or losses is reported as a component of other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings.  The Company expects approximately $4.9 million (pre-tax) to be reclassified as an increase to interest income and $20.6 million (pre-tax) to be reclassified as an increase to interest expense, from OCI related to the Company’s cash flow hedges in the twelve months following March 31, 2024.  This reclassification is due to anticipated payments that will be made and/or received on the swaps based upon the forward curve at March 31, 2024.

The Company had no fair value hedges as of March 31, 2024 or December 31, 2023.

Customer Related Positions

Loan level derivatives, primarily interest rate swaps, offered to commercial borrowers through the Company’s loan level derivative program do not qualify as hedges for accounting purposes. The Company believes that its exposure to commercial customer derivatives is limited because these contracts are simultaneously matched at inception with an offsetting dealer transaction. Derivatives with dealer counterparties are then either cleared through a clearinghouse or settled directly with a single counterparty. The commercial customer derivative program allows the Company to retain variable-rate commercial loans while allowing the customer to synthetically fix the loan rate by entering into a variable-to-fixed interest rate swap. The amounts relating to the notional principal amount are not actually exchanged.

Foreign exchange contracts offered to commercial borrowers through the Company’s derivative program do not qualify as hedges for accounting purposes. The Company acts as a seller and buyer of foreign exchange contracts to accommodate its customers. To mitigate the market and liquidity risk associated with these derivatives, the Company enters into similar offsetting positions. The amounts relating to the notional principal amount are exchanged.

The Company has entered into risk participation agreements with other dealer banks in commercial loan agreements. Participating banks guarantee the performance on borrower-related interest rate swap contracts. These derivatives are not designated as hedges and, therefore, changes in fair value are recognized in earnings. Under a risk participation-out agreement, a derivative asset, the Company participates out a portion of the credit risk associated with the interest rate swap position executed with the commercial borrower for a fee paid to the participating bank. Under a risk participation-in agreement, a derivative liability, the Company assumes, or participates in, a portion of the credit risk associated with the interest rate swap position with the commercial borrower for a fee received from the other bank.

The following tables reflect the Company’s customer related derivative positions at the dates indicated below for those derivatives not designated as hedging:

		Notional Amount Maturing
	Number of  Positions  (1)	Less than 1 year		Less than 2 years		Less than 3 years		Less than 4 years		Thereafter		Total		Fair Value
	March 31, 2024
	(Dollars in thousands)
Loan level swaps
Receive fixed, pay variable	276	$	134,253	$	237,171	$	235,290	$	247,638	$	910,248	$	1,764,600	$	(110,626)
Pay fixed, receive variable	276	134,253		237,171		235,290		247,638		910,248		1,764,600		110,519
Foreign exchange contracts
Buys foreign currency, sells U.S. currency	24	85,312		—		—		—		—		85,312		(463)
Buys U.S. currency, sells foreign currency	24	85,312		—		—		—		—		85,312		502
Risk participation agreements
Participation out	17	24,063		—		—		34,491		92,158		150,712		111
Participation in	12	—		—		36,275		—		15,639		51,914		(24)
		Notional Amount Maturing
	Number of  Positions  (1)	Less than 1 year		Less than 2 years		Less than 3 years		Less than 4 years		Thereafter		Total		Fair Value
	December 31, 2023
	(Dollars in thousands)
Loan level swaps
Receive fixed, pay variable	281	$	80,682	$	252,260	$	223,928	$	230,513	$	997,108	$	1,784,491	$	(88,415)
Pay fixed, receive variable	281	80,682		252,260		223,928		230,513		997,108		1,784,491		88,280
Foreign exchange contracts
Buys foreign currency, sells U.S. currency	22	65,586		12,957		—		—		—		78,543		2,197
Buys U.S. currency, sells foreign currency	22	65,586		12,957		—		—		—		78,543		(2,160)
Risk participation agreements
Participation out	17	—		24,193		—		13,119		114,027		151,339		200
Participation in	8	—		—		13,016		18,989		15,725		47,730		(44)

(1)The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.

Mortgage Derivatives

The Company enters into commitments to fund residential mortgage loans at specified rates and times in the future, with the intention that loans may be sold subsequently in the secondary market. Mortgage loan commitments are referred to as derivative loan commitments if the loan that will result from exercise of the commitment will be held for sale upon funding. These commitments are recognized at fair value on the consolidated balance sheet in other assets and other liabilities with changes in their fair values recorded within mortgage banking income. In addition, the Company has elected the fair value option to carry loans held for sale at fair value. The change in fair value of loans held for sale is recorded in current period earnings as a component of mortgage banking income in accordance with the Company's fair value election. The fair value of loans held for sale increased by $70,000 and decreased by $17,000 for the three months ended March 31, 2024 and 2023, respectively. These amounts were offset in earnings by the change in the fair value of mortgage derivatives.

Outstanding loan commitments expose the Company to the risk that the price of the loans arising from exercise of the loan commitment might change from inception of the rate lock to funding of the loan due to changes in mortgage interest rates. If interest rates increase, the value of these loan commitments decreases. Conversely, if interest rates decrease, the value of these loan commitments increases. To protect against the price risk inherent in derivative loan commitments, the Company utilizes both "mandatory delivery" and "best efforts" forward loan sale commitments to mitigate the risk of potential decreases in the values of loans that would result from the exercise of the derivative loan commitments. Mandatory delivery contracts are accounted for as derivative instruments. Included in the mandatory delivery forward commitments are To Be Announced securities ("TBAs"). Certain assumptions, including pull through rates and rate lock periods, are used in managing the existing and future hedges. The accuracy of underlying assumptions will impact the ultimate effectiveness of any hedging strategies.

With mandatory delivery contracts, the Company commits to deliver a certain principal amount of mortgage loans to an investor at a specified price on or before a specified date. If the Company fails to deliver the amount of mortgages necessary to fulfill the commitment by the specified date, it is obligated to pay a "pair-off" fee, based on then-current market prices, to the investor/counterparty to compensate the investor for the shortfall. Generally, the Company makes this type of commitment once mortgage loans have been funded and are held for sale, in order to minimize the risk of failure to deliver the requisite volume of loans to the investor and paying pair-off fees as a result. The Company also sells TBA securities to offset potential changes in the fair value of derivative loan commitments. Generally, the Company sells TBA securities by entering into derivative loan commitments for settlement in 30 to 90 days. The Company expects that mandatory delivery contracts, including TBA securities, will experience changes in fair value opposite to the changes in the fair value of derivative loan commitments.

With best effort contracts, the Company commits to deliver an individual mortgage loan of a specified principal amount and quality to an investor if the loan to the underlying borrower closes. Generally, best efforts cash contracts have no pair off risk regardless of market movement. The price the investor will pay the seller for an individual loan is specified prior to the loan being funded (e.g., on the same day the lender commits to lend funds to a potential borrower). The Company expects that these best efforts forward loan sale commitments will experience a net neutral shift in fair value with related derivative loan commitments.

The aggregate amount of net realized gains on sales of mortgage loans included within mortgage banking income was $593,000 and $174,000 for the three months ended March 31, 2024 and 2023, respectively.

Balance Sheet Offsetting

The Company does not offset fair value amounts recognized for derivative instruments. The Company does net the amount recognized for the right to reclaim cash collateral against the obligation to return cash collateral arising from derivative instruments executed with the same counterparty under a master netting arrangement. Collateral legally required to be maintained at dealer banks by the Company is monitored and adjusted as necessary.

A daily settlement occurs through the CME for changes in the fair value of centrally cleared derivatives. Not all of the derivatives are required to be cleared through the daily clearing agent. As a result, the total fair values of loan level derivative assets and liabilities recognized on the Company's financial statements are not equal and offsetting.

The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet and the potential effect of netting arrangements on its financial position, at the dates indicated:

	Asset Derivatives (1)						Liability Derivatives (2)
	Fair Value at			Fair Value at			Fair Value at			Fair Value at
	March 31 2024			December 31 2023			March 31 2024			December 31 2023
	(Dollars in thousands)
Derivatives designated as hedges
Interest rate derivatives	$	6,695	(3)	$	1,927		$	38,687	(4)	$	32,090	(4)
Derivatives not designated as hedges
Customer Related Positions
Loan level derivatives	111,146		(3)	99,416		(3)	111,252		(4)	99,551		(4)
Foreign exchange contracts	1,304			2,220			1,265			2,183
Risk participation agreements	111			200			24			44
Mortgage Derivatives
Interest rate lock commitments	357			168			85			—
Forward sale loan commitments	129			17			—			—
Total derivatives not designated as hedges	113,047			102,021			112,711			101,778
Total	119,742			103,948			151,398			133,868
Netting Adjustments (5)	(57,796)			(48,253)			32,323			25,360
Net Derivatives on the Balance Sheet	61,946			55,695			119,075			108,508
Financial instruments (6)	6,220			12,018			6,220			12,018
Cash collateral pledged (received)	(26,969)			(17,076)			—			—
Net Derivative Amounts	$	28,757		$	26,601		$	112,855		$	96,490

(1)All asset derivatives are reflected in other assets on the balance sheet.

(2)All liability derivatives are reflected in other liabilities on the balance sheet.

(3)Approximately $426,000 and $3.2 million of accrued interest receivable is included in the fair value of interest rate and loan level derivative assets, respectively, at March 31, 2024, in comparison to accrued interest receivable of approximately $316,000 and $3.0 million, respectively, at December 31, 2023.

(4)Approximately $1.8 million and $3.2 million of accrued interest payable is included in the fair value of interest rate and loan level derivative liabilities, respectively, at March 31, 2024, in comparison to accrued interest payable of approximately $1.9 million and $3.0 million, respectively, at December 31, 2023.

(5)Netting adjustments represent the amounts recorded to convert derivative assets and liabilities cleared through CME from a gross basis to a net basis, inclusive of the variation margin payments, in accordance with applicable accounting guidance.

(6)Reflects offsetting derivative positions with the same counterparty that are not netted on the balance sheet.

The table below presents the effect of the Company’s derivative financial instruments included in OCI and current earnings for the periods indicated:

	Three Months Ended
	March 31
	2024		2023
	(Dollars in thousands)
Derivatives designated as hedges
(Loss) gain in OCI on derivatives (effective portion), net of tax	$	(1,488)	$	10,163
Loss reclassified from OCI into interest income or interest expense (effective portion)	$	(5,856)	$	(6,239)
Derivatives not designated as hedges
Changes in fair value of customer related positions
Other income	$	35	$	272
Other expense	(72)		(77)
Changes in fair value of mortgage derivatives
Mortgage banking income	131		(46)
Total	$	94	$	149

    The Company's derivative agreements with institutional counterparties contain various credit-risk related contingent provisions, such as requiring the Company to maintain a well-capitalized capital position. If the Company fails to meet these conditions, the counterparties could request the Company make immediate payment or demand that the Company provide immediate and ongoing full collateralization on derivative positions in net liability positions. All derivative instruments with credit-risk contingent features were in a net asset position at March 31, 2024 and December 31, 2023.

    By using derivatives, the Company is exposed to credit risk to the extent that counterparties to the derivative contracts do not perform as required. Should a counterparty fail to perform under the terms of a derivative contract, the Company's credit exposure on interest rate swaps is limited to the net positive fair value and accrued interest of all swaps with each counterparty. The Company seeks to minimize counterparty credit risk through credit approvals, limits, monitoring procedures, and obtaining collateral, where appropriate. Institutional counterparties must have an investment grade credit rating and be approved by the Company's Board of Directors. In addition, certain derivative contracts executed bilaterally with a dealer counterparty in the over-the-counter market are cleared through a clearinghouse, whereby the clearinghouse becomes the counterparty to the transaction. As such, management believes the risk of incurring credit losses on derivative contracts with those counterparties is remote. The Company's exposure relating to institutional counterparties was $117.5 million and $95.8 million at March 31, 2024 and December 31, 2023, respectively. The Company’s exposure relating to customer counterparties was approximately $313,000 and $5.6 million at March 31, 2024 and December 31, 2023, respectively. Credit exposure may be reduced by the value of collateral pledged by the counterparty.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

Fair value is a market-based measure considered from the perspective of a market participant rather than an entity-specific measure. Therefore, even when market assumptions are not readily available, the assumptions applied by the Company when determining fair value reflect those that the Company determines market participants would use to price the asset or liability at the measurement date. If there has been a significant decrease in the volume and level of activity for the asset or liability, regardless of the valuation technique(s) used, the objective of a fair value measurement remains the same. Fair value is the price that would be received if the asset were to be sold or that would be paid if the liability were to be transferred in an orderly market transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. When determining fair value, the Company considers pricing information and other inputs that are current as of the measurement date. In periods of market dislocation, the observability of prices and other inputs may be reduced for certain instruments, or not available at all. The unavailability or reduced availability of pricing or other input information could cause an instrument to be reclassified from one level to another.

The Fair Value Measurements and Disclosures Topic of the FASB ASC defines fair value and establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under the Fair Value Measurements and Disclosures Topic of the FASB ASC are described below:

Level 1 – Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 – Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.

Level 3 – Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

Valuation Techniques

There were no changes in the valuation techniques used during the three months ended March 31, 2024.

Securities

Trading and Equity Securities

These equity securities are valued based on market quoted prices. These securities are categorized in Level 1 as they are actively traded and no valuation adjustments have been applied.

U.S. Government Agency and U.S. Treasury Securities

Fair value is estimated using either multi-dimensional spread tables or benchmarks. The inputs used include benchmark yields, reported trades, and broker/dealer quotes. These securities are classified as Level 2.

Agency Mortgage-Backed Securities

Fair value is estimated using either a matrix or benchmarks. The inputs used include benchmark yields, reported trades, broker/dealer quotes, and issuer spreads. These securities are categorized as Level 2.

Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities

The valuation model for these securities is volatility-driven and ratings based, and uses multi-dimensional spread tables. The inputs used include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are categorized as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2.

State, County, and Municipal Securities

The fair value is estimated using a valuation matrix with inputs including bond interest rate tables, recent transactions, and yield relationships. These securities are categorized as Level 2.

Single and Pooled Issuer Trust Preferred Securities

The fair value of trust preferred securities, including pooled and single issuer preferred securities, is estimated using external pricing models, discounted cash flow methodologies or similar techniques. The inputs used in these valuations include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2.

Loans Held for Sale

The Company has elected the fair value option to account for originated closed loans intended for sale. The fair value is measured on an individual loan basis using quoted market prices and when not available, comparable market value or discounted cash flow analysis may be utilized. These assets are typically classified as Level 2.

Derivative Instruments

Derivatives

The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The Company incorporates credit valuation adjustments to appropriately reflect nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings. Additionally, in conjunction with fair value measurement guidance, the Company has made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio. Although the Company has determined that the majority of the inputs used to value its interest rate derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its interest rate derivatives and risk participation agreements may also utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. However, as of March 31, 2024 and December 31, 2023, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are properly classified as Level 2.

Mortgage Derivatives

The fair value of mortgage derivatives is determined based on current market prices for similar assets in the secondary market and, therefore, classified as Level 2 within the fair value hierarchy.

Individually Assessed Collateral Dependent Loans

In accordance with the CECL standard, expected credit losses on individually assessed loans deemed to be collateral dependent are valued based upon the lower of amortized cost or fair value of the underlying collateral less costs to sell.  The inputs used in the appraisals of the collateral are not always observable, and in such cases the loans may be classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2.

Other Real Estate Owned and Other Foreclosed Assets

Other Real Estate Owned ("OREO") and Other Foreclosed Assets, when applicable, are valued at the lower of cost or fair value of the property, less estimated costs to sell. The fair values are generally estimated based upon recent appraisal values of the property less costs to sell the property. Certain inputs used in appraisals are not always observable, and therefore OREO and Other Foreclosed Assets may be classified as Level 3 within the fair value hierarchy.

Goodwill and Other Intangible Assets

Goodwill and other intangible assets are subject to impairment testing. The Company conducts an annual impairment test of goodwill in the third quarter of each year, or more frequently if necessary. Other intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. To estimate the fair value of goodwill and, if necessary, other intangible assets, the Company utilizes both a comparable analysis of relevant price multiples in recent market transactions and a discounted cash flow analysis. Both valuation models require a significant degree of management judgment. In the event the fair value as determined by the valuation model is less than the carrying value, the intangibles may be impaired. If the impairment testing resulted in impairment, the Company would classify the impaired goodwill and other intangible assets subjected to nonrecurring fair value adjustments as Level 3.

Assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows at the dates indicated:

			Fair Value Measurements at Reporting Date Using
	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	March 31, 2024
	(Dollars in thousands)
Recurring fair value measurements
Assets
Trading securities	$	4,759	$	4,759	$	—	$	—
Equity securities	22,858		22,858		—		—
Securities available for sale
U.S. government agency securities	205,676		—		205,676		—
U.S. treasury securities	718,838		—		718,838		—
Agency mortgage-backed securities	270,605		—		270,605		—
Agency collateralized mortgage obligations	32,088		—		32,088		—
State, county, and municipal securities	191		—		191		—
Pooled trust preferred securities issued by banks and insurers	1,036		—		1,036		—
Small business administration pooled securities	44,397		—		44,397		—
Loans held for sale	11,340		—		11,340		—
Derivative instruments	119,742		—		119,742		—
Liabilities
Derivative instruments	151,398		—		151,398		—
Total recurring fair value measurements	$	1,280,132	$	27,617	$	1,252,515	$	—
Nonrecurring fair value measurements
Assets
Individually assessed collateral dependent loans (1)	$	29,289	$	—	$	—	$	29,289
Total nonrecurring fair value measurements	$	29,289	$	—	$	—	$	29,289

			Fair Value Measurements at Reporting Date Using
	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2023
	(Dollars in thousands)
Recurring fair value measurements
Assets
Trading securities	$	4,987	$	4,987	$	—	$	—
Equity securities	22,510		22,510		—		—
Securities available for sale
U.S. government agency securities	207,138		—		207,138		—
U.S. treasury securities	769,102		—		769,102		—
Agency mortgage-backed securities	277,047		—		277,047		—
Agency collateralized mortgage obligations	33,189		—		33,189		—
State, county, and municipal securities	190		—		190		—
Pooled trust preferred securities issued by banks and insurers	1,018		—		1,018		—
Small business administration pooled securities	46,572		—		46,572		—
Loans held for sale	6,368		—		6,368		—
Derivative instruments	103,948		—		103,948		—
Liabilities
Derivative instruments	133,868		—		133,868		—
Total recurring fair value measurements, net	$	1,338,201	$	27,497	$	1,310,704	$	—
Nonrecurring fair value measurements
Assets
Individually assessed collateral dependent loans (1)	$	28,881	$	—	$	—	$	28,881
Total nonrecurring fair value measurements	$	28,881	$	—	$	—	$	28,881

(1)     The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.

The estimated fair values and related carrying amounts for assets and liabilities for which fair value is only disclosed are shown below at the dates indicated:

					Fair Value Measurements at Reporting Date Using
	Carrying Value		Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	March 31, 2024
	(Dollars in thousands)
Financial assets
Securities held to maturity (a)
U.S. government agency securities	$	29,086	$	28,243	$	—	$	28,243	$	—
U.S. treasury securities	100,732		90,810		—		90,810		—
Agency mortgage-backed securities	819,912		748,601		—		748,601		—
Agency collateralized mortgage obligations	465,016		393,258		—		393,258		—
Single issuer trust preferred securities issued by banks	1,500		1,372		—		1,372		—
Small business administration pooled securities	129,021		121,337		—		121,337		—
Loans, net of allowance for credit losses (b)	14,154,357		13,074,151		—		—		13,074,151
Federal Home Loan Bank stock (c)	46,304		46,304		—		46,304		—
Cash surrender value of life insurance policies (d)	298,352		298,352		—		298,352		—
Financial liabilities
Deposit liabilities, other than time deposits (e)	$	12,610,236	$	12,610,236	$	—	$	12,610,236	$	—
Time certificates of deposits (f)	2,432,985		2,418,961		—		2,418,961		—
Federal Home Loan Bank borrowings (f)	962,535		960,942		—		960,942		—
Junior subordinated debentures (g)	62,858		59,740		—		59,740		—

					Fair Value Measurements at Reporting Date Using
	Carrying Value		Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2023
	(Dollars in thousands)
Financial assets
Securities held to maturity (a)
U.S. government agency securities	$	29,521	$	28,408	$	—	$	28,408	$	—
U.S. treasury securities	100,712		91,535		—		91,535		—
Agency mortgage-backed securities	829,431		763,728		—		763,728		—
Agency collateralized mortgage obligations	477,517		407,911		—		407,911		—
Single issuer trust preferred securities issued by banks	1,500		1,373		—		1,373		—
Small business administration pooled securities	130,426		124,653		—		124,653		—
Loans, net of allowance for credit losses (b)	14,106,967		13,079,368		—		—		13,079,368
Federal Home Loan Bank stock (c)	43,557		43,557		—		43,557		—
Cash surrender value of life insurance policies (d)	297,387		297,387		—		297,387		—
Financial liabilities
Deposit liabilities, other than time deposits (e)	$	12,684,068	$	12,684,068	$	—	$	12,684,068	$	—
Time certificates of deposits (f)	2,181,479		2,166,573		—		2,166,573		—
Federal Home Loan Bank borrowings (f)	1,105,541		1,103,845		—		1,103,845		—
Junior subordinated debentures (g)	62,858		58,911		—		58,911		—
Subordinated debentures (f)	49,980		49,613		—		—		49,613

(a)The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis.

(b)Fair value of loans is measured using the exit price valuation method, determined primarily by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows, while incorporating liquidity and credit assumptions. Additionally, this amount excludes individually assessed collateral dependent loans, which are deemed to be marked to fair value on a nonrecurring basis.

(c)Federal Home Loan Bank stock has no quoted market value and is carried at cost; therefore, the carrying amount approximates fair value.

(d)Cash surrender value of life insurance policies is recorded at its cash surrender value (or the amount that can be realized upon surrender of the policy), therefore, carrying amount approximates fair value.

(e)Fair value of demand deposits, savings and interest checking accounts and money market deposits is the amount payable on demand at the reporting date.

(f)Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities.

(g)Fair value was determined based upon market prices of securities with similar terms and maturities.

This summary excludes certain financial assets and liabilities for which the carrying value approximates fair value. For financial assets, these may include cash and due from banks, federal funds sold and short-term investments. For financial liabilities, these may include federal funds purchased. These instruments would all be considered to be classified as Level 1 within the fair value hierarchy. Also excluded from the summary are financial instruments measured at fair value on a recurring and nonrecurring basis, as previously described.

The Company considers its current use of financial instruments to be the highest and best use of the instruments.

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Revenue Recognition (Notes)

3 Months Ended

Mar. 31, 2024

Revenue Recognition [Abstract]

Revenue from Contract with Customer [Text Block]

REVENUE RECOGNITION

A portion of the Company's noninterest income is derived from contracts with customers, and as such, the revenue recognized depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company accounts for such revenues in accordance with ASC 606 - Revenue from Contracts with Customers and considers the terms of the contract and all relevant facts and circumstances when applying this guidance. To ensure its alignment with this core principle, the Company measures revenue and the timing of recognition by applying the following five steps:

1.Identify the contract(s) with customers

2.Identify the performance obligations

3.Determine the transaction price

4.Allocate the transaction price to the performance obligations

5.Recognize revenue when (or as) the entity satisfies a performance obligation

The Company has disaggregated its revenue from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The following table presents the revenue streams that the Company has disaggregated as of the periods indicated:

	Three Months Ended
	March 31 2024		March 31 2023
	(Dollars in thousands)
Deposit account fees (inclusive of cash management fees)	$	6,228	$	5,916
Interchange fees	2,897		2,788
ATM fees	1,056		938
Investment management - wealth management and advisory services	9,080		8,185
Investment management - retail investments and insurance revenue	861		1,594
Payment processing income	538		470
Credit card income	533		493
Other noninterest income	1,114		1,198
Total noninterest income in-scope of ASC 606	22,307		21,582
Total noninterest income out-of-scope of ASC 606	7,636		6,660
Total noninterest income	$	29,943	$	28,242

In each of the revenue streams identified above, there were no significant judgments made in determining or allocating the transaction price, as the consideration and service requirements are generally explicitly identified in the associated contracts. Additional information related to each of the revenue streams is further noted below.

Deposit Account Fees

The Company offers various deposit account products to its customers governed by specific deposit agreements applicable to either personal customers or business customers. These agreements identify the general conditions and obligations of both parties, and include standard information regarding deposit account related fees.

Deposit account services include providing access to deposit accounts as well as access to the various deposit transactional services of the Company. These transactional services are primarily those that are identified in the standard fee schedule, and include, but are not limited to, services such as overdraft protection, wire transfer, and check collection. Revenue is recognized in conjunction with the various services being provided. For example, the Company may assess monthly fixed service fees associated with the customer having access to a deposit account, which can vary depending on the account type and daily account balance. In addition, the Company may also assess separate fixed fees associated with and at the time specific transactions are entered into by the customer. As such, the Company considers its performance obligations to be met concurrently with providing the account access or completing the requested deposit transaction.

Cash Management

Cash management services are a subset of the Deposit account fees revenue stream. These services primarily include ACH transaction processing, positive pay and remote deposit services. These services are also governed by separate agreements entered into with the customer. The fee arrangement for these services is structured to assess fees under one of two scenarios, either a per transaction fee arrangement or an earnings credit analysis arrangement. Under the per transaction fee arrangement, fixed fees are assessed concurrently with customers executing the transactions, and as such, the Company considers its performance obligations to be met concurrently with completing the requested transaction. Under the earnings credit analysis arrangement, the Company provides a monthly earnings credit to the customer that is negotiated and determined based on various factors. The credit is then available to absorb the per transaction fees that are assessed on the customer's deposit account activity for the month. Any amount of the transactional fees in excess of the earnings credit is recognized as revenue in that month.

Interchange Fees

The Company earns interchange revenue from its issuance of credit and debit cards granted through its membership in various card payment networks. The Company provides credit cards and debit cards to its customers which are authorized and settled through these payment networks, and in exchange, the Company earns revenue as determined by each payment network's interchange program. The revenue is recognized concurrently with the settlement of card transactions within each network.

ATM Fees

The Company deploys automated teller machines (ATMs) as part of its overall branch network. Certain transactions performed at the ATMs require customers to acknowledge and pay a fee for the requested service. Certain ATM fees are disclosed in the deposit account agreement fee schedules, whereas those assessed to non-Rockland Trust deposit holders are solely determined during the transaction at the machine.

The ATM fee is a fixed dollar per transaction amount, and as such, is recognized concurrently with the overall daily processing and settlement of the ATM activity.

Investment Management - Wealth Management and Advisory Services

The Company offers investment management and trust services to individuals, institutions, small businesses and charitable institutions. Each investment management product is governed by its own contract along with a separate identifiable fee schedule unique to that product. The Company also offers additional services, such as estate settlement, financial planning, tax services and other special services quoted at the client's request.

Asset management and/or custody fees are based upon a percentage of the monthly valuation of the principal assets in the customer's account, whereas fees for additional or special services are fixed in nature and are charged as services are rendered. As the fees are dependent on assets under management, which are susceptible to market factors outside of the Company's control, this variable consideration is constrained and therefore no revenue is estimated at contract initiation. As such, all revenue is recognized in correlation to the monthly management fee determinations or as transactional services are provided. Due to the fact that payments are primarily made subsequent to the valuation period, the Company records a receivable for revenue earned but not received. The following table provides the amount of investment management revenue earned but not received as of the dates indicated:

	March 31, 2024		December 31, 2023
	(Dollars in thousands)
Receivables, included in other assets	$	5,635	$	5,509

Investment Management - Retail Investments and Insurance Revenue

The Company offers the sale of mutual fund shares, unit investment trust shares, third party model portfolios, general securities, fixed and variable annuities and life insurance products through registered representatives who are both employed by the Company and licensed and contracted with various Broker General Agents to offer these products to the Company’s customer base. As such, the Company performs these services as an agent and earns a fixed commission on the sales of these

products and services. To a lesser degree, production bonus commissions can also be earned based upon the Company meeting certain volume thresholds.

In general, the Company recognizes commission revenue at the point of sale, and for certain insurance products, may also earn and recognize annual residual commissions commensurate with annual premiums being paid.

Payment Processing Income

The Company refers customers to third party payment processing partners in exchange for commission and fee income. The income earned is comprised of multiple components, including a fixed referral fee per each referred customer, a rebate amount determined primarily as a percentage of net revenue earned by the third party from services provided to each referred customer, and overall production bonus commissions if certain new account production thresholds are met. Payment processing income is recognized in conjunction with either completing the referral to earn the fixed fee amount or as the merchant activity is processed to derive the Company's rebate and/or production bonus amounts.

Credit Card Income

The Company provides consumer and business credit card solutions to its customers by soliciting new accounts on behalf of a third party credit card provider in exchange for a fee. The income earned is comprised of new account incentive payments as well as a percentage of interchange income earned by the third party provider offering the consumer and business purpose revolving credit accounts. The credit card income is recognized in conjunction with the establishment of each new credit card member or as the interchange is earned by the third party in connection with net purchase transactions made by the credit card member.

Other Noninterest Income

The Company earns various types of other noninterest income that fall within the scope of the new revenue recognition rules, and have been aggregated into one general revenue stream in the table noted above. This amount includes, but is not limited to, the following types of revenue with customers:

Safe Deposit Rent

    The Company rents out the use of safe deposit boxes to its customers, which can be accessed when the bank is open for business. The safe deposit box rental fee is paid upfront and is recognized as revenue ratably over the annual term of the contract.

Foreign Currency

    The Company earns fee income associated with various transactions related to foreign currency product offerings, including foreign currency bank notes and drafts and foreign currency wires. The majority of this income is derived from commissions earned related to customers executing the above mentioned foreign currency transactions through arrangements with third party correspondents.

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Comprehensive Income/Loss

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

COMPREHENSIVE INCOME/LOSS

OTHER COMPREHENSIVE INCOME (LOSS)

The following tables present a reconciliation of the changes in the components of other comprehensive income (loss) for the periods indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss):

	Three Months Ended March 31, 2024
	Pre-Tax Amount		Tax (Expense) Benefit		After Tax Amount
	(Dollars in thousands)
Change in fair value of securities available for sale	$	(3,952)	$	944	$	(3,008)
Less: net security losses reclassified into other noninterest expense	—		—		—
Net change in fair value of securities available for sale	(3,952)		944		(3,008)
Change in fair value of cash flow hedges	(7,904)		2,161		(5,743)
Less: net cash flow hedge losses reclassified into interest income or interest expense	(5,856)		1,601		(4,255)
Net change in fair value of cash flow hedges	(2,048)		560		(1,488)
Amortization of net actuarial gains	(25)		7		(18)
Amortization of net prior service costs	4		(1)		3
Net change in other comprehensive income for defined benefit postretirement plans (1)	(21)		6		(15)
Total other comprehensive loss	$	(6,021)	$	1,510	$	(4,511)

	Three Months Ended March 31, 2023
	Pre-Tax Amount		Tax (Expense) Benefit		After Tax Amount
	(Dollars in thousands)
Change in fair value of securities available for sale	$	22,185	$	(5,117)	$	17,068
Less: net security losses reclassified into other noninterest expense	—		—		—
Net change in fair value of securities available for sale	22,185		(5,117)		17,068
Change in fair value of cash flow hedges	7,899		(2,221)		5,678
Less: net cash flow hedge losses reclassified into interest income or interest expense	(6,239)		1,754		(4,485)
Net change in fair value of cash flow hedges	14,138		(3,975)		10,163
Amortization of net actuarial gains	(137)		38		(99)
Amortization of net prior service costs	10		(3)		7
Net change in other comprehensive income for defined benefit postretirement plans (1)	(127)		35		(92)
Total other comprehensive income	$	36,196	$	(9,057)	$	27,139

(1)The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 12 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2023 Form 10-K.

Information on the Company’s accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the dates indicated:

	Unrealized Gain (Loss) on Securities		Unrealized Gain (Loss) on Cash Flow Hedge		Defined Benefit Postretirement Plans		Accumulated Other Comprehensive Income (Loss)
	(Dollars in thousands)
	2024
Beginning balance: January 1, 2024	$	(96,231)	$	(20,575)	$	1,979	$	(114,827)
Net change in other comprehensive income (loss)	(3,008)		(1,488)		(15)		(4,511)
Ending balance: March 31, 2024	$	(99,239)	$	(22,063)	$	1,964	$	(119,338)
	2023
Beginning balance: January 1, 2023	$	(128,657)	$	(36,630)	$	2,203	$	(163,084)
Net change in other comprehensive income (loss)	17,068		10,163		(92)		27,139
Ending balance: March 31, 2023	$	(111,589)	$	(26,467)	$	2,111	$	(135,945)

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Commitments and contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

COMMITMENTS AND CONTINGENCIES

Financial Instruments with Off-Balance Sheet Risk

    In the normal course of business, the Company enters into various transactions to meet the financing needs of its customers, which, in accordance with GAAP, are not included in its consolidated balance sheets. These transactions include commitments to extend credit and standby letters of credit, and loan exposures with recourse, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company minimizes its exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures.

    The Company enters into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of these commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding.

The Company has certain loan exposures for which there is recourse. These loan relationships could require the Company to repurchase or cover certain losses per agreements for certain loans that are either sold or referred to third parties.

    Standby letters of credit are written conditional commitments issued to guarantee the performance of a customer to a third party. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, the Company would be entitled to seek recovery from the customer. The Company’s policies generally require that standby letter of credit arrangements contain security and debt covenants similar to those contained in loan agreements.

    The fees collected in connection with the issuance of standby letters of credit are representative of the fair value of the Company's obligation undertaken in issuing the guarantee. In accordance with applicable accounting standards related to guarantees, fees collected in connection with the issuance of standby letters of credit are deferred. The fees are then recognized in income proportionately over the life of the standby letter of credit agreement. The deferred standby letter of credit fees represent the fair value of the Company's potential obligations under the standby letter of credit guarantees.

    The following table summarizes the above financial instruments at the dates indicated:

	March 31, 2024		December 31, 2023
	(Dollars in thousands)
Commitments to extend credit	$	4,704,239	$	4,632,105
Loan exposures sold with recourse	150,625		153,850
Standby letters of credit	21,626		21,427
Deferred standby letter of credit fees	190		155

Lease Commitments

The Company leases space for offices, parking, and ATM locations, as well as certain branch locations under noncancellable operating leases. Several of these leases contain renewal options to extend lease terms for a period of 1 to 20 years.

There has been no significant change in the future minimum lease payments payable by the Company since December 31, 2023. See the Company's 2023 Form 10-K for information regarding leases and other commitments.

Other Contingencies

At March 31, 2024, the Bank was involved in pending lawsuits that arose in the ordinary course of business. Management has reviewed these pending lawsuits with legal counsel and has taken into consideration the view of counsel as to their outcome. In the opinion of management, the final disposition of pending lawsuits is not expected to have a material adverse effect on the Company’s financial position or results of operations.

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Basis of Presentation Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Accounting Policy

BASIS OF PRESENTATION

Independent Bank Corp. (the “Company”) is a state chartered, federally registered bank holding company, incorporated in 1985. The Company is the sole stockholder of Rockland Trust Company (“Rockland Trust” or the “Bank”), a Massachusetts trust company chartered in 1907.

All material intercompany balances and transactions have been eliminated in consolidation. Certain previously reported amounts have been reclassified to conform to the current year’s presentation.

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. Results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any other interim period.

For further information, refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the Securities and Exchange Commission (the "2023 Form 10-K").

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Securities (Tables)

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of Equity securities gains and losses [Table Text Block]

	Three Months Ended
	March 31
	2024		2023
	Dollars in thousands
Net gains recognized during the period on equity securities	$	609	$	368
Less: net gains recognized during the period on equity securities sold during the period	435		1
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	174	$	367

Debt Securities, Available-for-sale [Table Text Block]

The following table summarizes the amortized cost, allowance for credit losses, and fair value of available for sale securities and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) at the dates indicated:

	March 31, 2024										December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value
	(Dollars in thousands)
U.S. government agency securities	$	230,013	$	—	$	(24,337)	$	—	$	205,676	$	230,198	$	—	$	(23,060)	$	—	$	207,138
U.S. treasury securities	774,714		—		(55,876)		—		718,838		824,597		—		(55,495)		—		769,102
Agency mortgage-backed securities	309,560		25		(38,980)		—		270,605		314,269		24		(37,246)		—		277,047
Agency collateralized mortgage obligations	34,644		—		(2,556)		—		32,088		35,713		6		(2,530)		—		33,189
State, county, and municipal securities	195		—		(4)		—		191		195		—		(5)		—		190
Pooled trust preferred securities issued by banks and insurers	1,180		—		(144)		—		1,036		1,188		—		(170)		—		1,018
Small business administration pooled securities	52,083		—		(7,686)		—		44,397		53,702		—		(7,130)		—		46,572
Total available for sale securities	$	1,402,389	$	25	$	(129,583)	$	—	$	1,272,831	$	1,459,862	$	30	$	(125,636)	$	—	$	1,334,256

Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block]

These available for sale securities are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position:

	March 31, 2024
		Less than 12 months				12 months or longer				Total
	# of  holdings	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
U.S. government agency securities	9	$	—	$	—	$	205,676	$	(24,337)	$	205,676	$	(24,337)
U.S. treasury securities	16	—		—		718,838		(55,876)		718,838		(55,876)
Agency mortgage-backed securities	125	857		(8)		267,985		(38,972)		268,842		(38,980)
Agency collateralized mortgage obligations	12	1,075		(11)		31,013		(2,545)		32,088		(2,556)
State, county, and municipal securities	1	191		(4)		—		—		191		(4)
Pooled trust preferred securities issued by banks and insurers	1	—		—		1,036		(144)		1,036		(144)
Small business administration pooled securities	8	—		—		44,397		(7,686)		44,397		(7,686)
Total	172	$	2,123	$	(23)	$	1,268,945	$	(129,560)	$	1,271,068	$	(129,583)
	December 31, 2023
		Less than 12 months				12 months or longer				Total
	# of  holdings	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
U.S. government agency securities	9	$	—	$	—	$	207,138	$	(23,060)	$	207,138	$	(23,060)
U.S. treasury securities	17	—		—		769,102		(55,495)		769,102		(55,495)
Agency mortgage-backed securities	115	1,091		(11)		273,447		(37,235)		274,538		(37,246)
Agency collateralized mortgage obligations	12	339		(2)		31,682		(2,528)		32,021		(2,530)
State, county, and municipal securities	1	190		(5)		—		—		190		(5)
Pooled trust preferred securities issued by banks and insurers	1	—		—		1,018		(170)		1,018		(170)
Small business administration pooled securities	8	—		—		46,572		(7,130)		46,572		(7,130)
Total	163	$	1,620	$	(18)	$	1,328,959	$	(125,618)	$	1,330,579	$	(125,636)

Debt Securities, Held-to-maturity [Table Text Block]

The following table summarizes the amortized cost, fair value and allowance for credit losses of held to maturity securities and the corresponding amounts of gross unrealized gains and losses recognized at the dates indicated:

	March 31, 2024										December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for credit losses		Fair Value
	(Dollars in thousands)
U.S. government agency securities	$	29,086	$	—	$	(843)	$	—	$	28,243	$	29,521	$	—	$	(1,113)	$	—	$	28,408
U.S. treasury securities	100,732		—		(9,922)		—		90,810		100,712		—		(9,177)		—		91,535
Agency mortgage-backed securities	819,912		61		(71,372)		—		748,601		829,431		175		(65,878)		—		763,728
Agency collateralized mortgage obligations	465,016		—		(71,758)		—		393,258		477,517		—		(69,606)		—		407,911
Single issuer trust preferred securities issued by banks	1,500		—		(128)		—		1,372		1,500		—		(127)		—		1,373
Small business administration pooled securities	129,021		—		(7,684)		—		121,337		130,426		384		(6,157)		—		124,653
Total held to maturity securities	$	1,545,267	$	61	$	(161,707)	$	—	$	1,383,621	$	1,569,107	$	559	$	(152,058)	$	—	$	1,417,608

Schedule of contractual maturities of securities [Table Text Block]

A schedule of the contractual maturities of securities available for sale and securities held to maturity at March 31, 2024 is presented below:

	Due in one year or less				Due after one year to five years				Due after five to ten years				Due after ten years				Total
	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(Dollars in thousands)
Available for sale securities
U.S. government agency securities	$	—	$	—	$	199,221	$	178,800	$	30,792	$	26,876	$	—	$	—	$	230,013	$	205,676
U.S. treasury securities	197,408		192,434		577,306		526,404		—		—		—		—		774,714		718,838
Agency mortgage-backed securities	1		1		140,616		125,614		43,861		38,155		125,082		106,835		309,560		270,605
Agency collateralized mortgage obligations	—		—		—		—		2,837		2,586		31,807		29,502		34,644		32,088
State, county, and municipal securities	—		—		195		191		—		—		—		—		195		191
Pooled trust preferred securities issued by banks and insurers	—		—		—		—		—		—		1,180		1,036		1,180		1,036
Small business administration pooled securities	—		—		—		—		—		—		52,083		44,397		52,083		44,397
Total available for sale securities	$	197,409	$	192,435	$	917,338	$	831,009	$	77,490	$	67,617	$	210,152	$	181,770	$	1,402,389	$	1,272,831
Held to maturity securities
U.S. government agency securities	$	29,086	$	28,243	$	—	$	—	$	—	$	—	$	—	$	—	$	29,086	$	28,243
U.S. treasury securities	—		—		99,740		89,992		992		818		—		—		100,732		90,810
Agency mortgage-backed securities	—		—		448,783		414,620		181,710		159,656		189,419		174,325		819,912		748,601
Agency collateralized mortgage obligations	—		—		63,456		58,528		19,228		16,930		382,332		317,800		465,016		393,258
Single issuer trust preferred securities issued by banks	—		—		1,500		1,372		—		—		—		—		1,500		1,372
Small business administration pooled securities	—		—		—		—		7,688		7,048		121,333		114,289		129,021		121,337
Total held to maturity securities	$	29,086	$	28,243	$	613,479	$	564,512	$	209,618	$	184,452	$	693,084	$	606,414	$	1,545,267	$	1,383,621
Total	$	226,495	$	220,678	$	1,530,817	$	1,395,521	$	287,108	$	252,069	$	903,236	$	788,184	$	2,947,656	$	2,656,452

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Loans, Allowance for Credit Losses and Credit Quality (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2024
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home  Equity		Other Consumer		Total
Allowance for credit losses
Beginning balance	$	19,243	$	74,148	$	7,683	$	3,963	$	23,637	$	12,797	$	751	$	142,222
Charge-offs	—		—		—		(109)		—		—		(772)		(881)
Recoveries	85		—		—		39		—		133		350		607
Provision for (release of) credit losses	1,161		3,781		(110)		135		543		(888)		378		5,000
Ending balance (1)	$	20,489	$	77,929	$	7,573	$	4,028	$	24,180	$	12,042	$	707	$	146,948
	Three Months Ended March 31, 2023
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home  Equity		Other Consumer		Total
Allowance for credit losses
Beginning balance	$	27,559	$	77,799	$	10,762	$	2,834	$	20,973	$	11,504	$	988	$	152,419
Charge-offs	(281)		—		—		(28)		—		—		(506)		(815)
Recoveries	5		—		—		31		—		16		225		277
Provision for (release of) credit losses	9,649		(1,601)		(1,514)		501		(519)		908		(174)		7,250
Ending balance (1)	$	36,932	$	76,198	$	9,248	$	3,338	$	20,454	$	12,428	$	533	$	159,131

(1)Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $59.3 million and $52.7 million as of March 31, 2024 and March 31, 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:

	March 31, 2024
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving converted to Term		Total (1)
	(Dollars in thousands)
Commercial and industrial
Pass	$	159,082	$	223,301	$	148,288	$	73,012	$	60,865	$	146,495	$	685,258	$	—	$	1,496,301
Special mention	3,160		3,254		1,843		322		9,206		4,024		31,525		—		53,334
Substandard	1,809		—		57		198		—		43		28,299		—		30,406
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial and industrial	$	164,051	$	226,555	$	150,188	$	73,532	$	70,071	$	150,562	$	745,082	$	—	$	1,580,041
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial real estate
Pass	$	193,152	$	1,127,417	$	1,201,044	$	1,304,867	$	1,212,201	$	2,562,542	$	93,048	$	248	$	7,694,519
Special mention	—		61,943		38,590		53,837		44,806		124,614		297		—		324,087
Substandard	6,350		27,358		18,046		22,758		3,894		3,973		—		—		82,379
Doubtful	—		—		—		—		—		7,851		—		—		7,851
Loss	—		—		—		—		—		—		—		—		—
Total commercial real estate	$	199,502	$	1,216,718	$	1,257,680	$	1,381,462	$	1,260,901	$	2,698,980	$	93,345	$	248	$	8,108,836
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial construction
Pass	$	97,558	$	164,784	$	336,768	$	100,371	$	7,971	$	25,184	$	19,398	$	676	$	752,710
Special mention	3,326		18,724		—		5,618		—		—		—		—		27,668

Substandard	10,585		—		18,601		19,336		—		—		—		—		48,522
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial construction	$	111,469	$	183,508	$	355,369	$	125,325	$	7,971	$	25,184	$	19,398	$	676	$	828,900
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Small business
Pass	$	14,707	$	49,885	$	48,880	$	37,682	$	23,538	$	33,246	$	49,943	$	—	$	257,881
Special mention	—		59		5		75		152		182		481		—		954
Substandard	180		520		224		87		461		658		725		—		2,855
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total small business	$	14,887	$	50,464	$	49,109	$	37,844	$	24,151	$	34,086	$	51,149	$	—	$	261,690
Current-period gross write-offs	$	—	$	—	$	28	$	—	$	—	$	—	$	81	$	—	$	109
Residential real estate
Pass	$	29,922	$	497,477	$	633,135	$	399,440	$	183,544	$	674,298	$	—	$	—	$	2,417,816
Default	—		—		—		—		—		2,889		—		—		2,889
Total residential real estate	$	29,922	$	497,477	$	633,135	$	399,440	$	183,544	$	677,187	$	—	$	—	$	2,420,705
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Home equity
Pass	$	4,208	$	27,517	$	37,162	$	54,001	$	48,389	$	145,029	$	778,842	$	3,736	$	1,098,884
Default	—		—		83		—		—		170		1,214		235		1,702
Total home equity	$	4,208	$	27,517	$	37,245	$	54,001	$	48,389	$	145,199	$	780,056	$	3,971	$	1,100,586
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other consumer (2)
Pass	$	66	$	586	$	216	$	981	$	539	$	1,725	$	25,723	$	—	$	29,836
Default	—		—		—		—		—		—		—		—		—
Total other consumer	$	66	$	586	$	216	$	981	$	539	$	1,725	$	25,723	$	—	$	29,836
Current-period gross write-offs	$	763	$	—	$	—	$	—	$	—	$	—	$	9	$	—	$	772
Total	$	524,105	$	2,202,825	$	2,482,942	$	2,072,585	$	1,595,566	$	3,732,923	$	1,714,753	$	4,895	$	14,330,594
Total current-period gross write-offs	$	763	$	—	$	28	$	—	$	—	$	—	$	90	$	—	$	881

	March 31, 2023
	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving converted to Term		Total (1)
	(Dollars in thousands)
Commercial and industrial
Pass	$	153,554	$	262,933	$	122,770	$	94,702	$	54,925	$	85,391	$	811,795	$	—	$	1,586,070
Special mention	—		4,712		705		868		1,608		1,342		24,114		—		33,349
Substandard	—		2,295		1,516		164		377		1		2,936		—		7,289
Doubtful	—		—		—		—		—		—		23,174		—		23,174
Loss	—		—		—		—		—		—		—		—		—
Total commercial and industrial	$	153,554	$	269,940	$	124,991	$	95,734	$	56,910	$	86,734	$	862,019	$	—	$	1,649,882
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	34	$	247	$	—	$	281
Commercial real estate
Pass	$	204,462	$	1,199,328	$	1,459,526	$	1,259,511	$	720,208	$	2,439,424	$	59,810	$	—	$	7,342,269
Special mention	154		52,961		67,200		29,611		13,139		225,673		—		—		388,738

Substandard	3,481		39,208		13,205		5,334		4,038		23,821		—		—		89,087
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial real estate	$	208,097	$	1,291,497	$	1,539,931	$	1,294,456	$	737,385	$	2,688,918	$	59,810	$	—	$	7,820,094
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial construction
Pass	$	90,362	$	461,824	$	266,758	$	89,919	$	62,033	$	4,755	$	21,237	$	—	$	996,888
Special mention	18,431		—		5,889		3,919		—		—		—		—		28,239
Substandard	7,619		11,434		2,130		—		—		—		—		—		21,183
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total commercial construction	$	116,412	$	473,258	$	274,777	$	93,838	$	62,033	$	4,755	$	21,237	$	—	$	1,046,310
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Small business
Pass	$	9,770	$	54,258	$	43,458	$	29,810	$	16,173	$	26,536	$	42,746	$	—	$	222,751
Special mention	—		—		—		158		—		228		527		—		913
Substandard	105		126		113		304		3		686		865		—		2,202
Doubtful	—		—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—		—
Total small business	$	9,875	$	54,384	$	43,571	$	30,272	$	16,176	$	27,450	$	44,138	$	—	$	225,866
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	28	$	—	$	28
Residential real estate
Pass	$	91,404	$	658,273	$	416,067	$	190,313	$	92,927	$	644,659	$	—	$	—	$	2,093,643
Default	—		—		—		472		157		1,372		—		—		2,001
Total residential real estate	$	91,404	$	658,273	$	416,067	$	190,785	$	93,084	$	646,031	$	—	$	—	$	2,095,644
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Home equity
Pass	$	6,812	$	42,352	$	58,830	$	53,565	$	31,341	$	139,472	$	756,103	$	937	$	1,089,412
Default	—		—		—		—		122		82		1,139		—		1,343
Total home equity	$	6,812	$	42,352	$	58,830	$	53,565	$	31,463	$	139,554	$	757,242	$	937	$	1,090,755
Current-period gross write-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other consumer (2)
Pass	$	60	$	386	$	1,168	$	926	$	514	$	1,852	$	14,450	$	—	$	19,356
Default	—		—		—		—		6		37		2		—		45
Total other consumer	$	60	$	386	$	1,168	$	926	$	520	$	1,889	$	14,452	$	—	$	19,401
Current-period gross write-offs	$	498	$	—	$	—	$	—	$	—	$	—	$	8	$	—	$	506
Total	$	586,214	$	2,790,090	$	2,459,335	$	1,759,576	$	997,571	$	3,595,331	$	1,758,898	$	937	$	13,947,952
Total current -period gross write-offs	$	498	$	—	$	—	$	—	$	—	$	34	$	283	$	—	$	815

(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:

	March 31, 2024		December 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	$	1,900	$	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:

	March 31 2024		December 31 2023
Residential real estate portfolio
FICO score (re-scored)(1)	755		754
LTV (re-valued)(2)	59.7	%	59.8	%
Home equity portfolio
FICO score (re-scored)(1)	770		770
LTV (re-valued)(2)(3)	43.9	%	43.3	%

(1)The average FICO scores at March 31, 2024 are based upon rescores from March 2024 as available for previously originated loans, or origination score data for loans booked in March 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 March 31, 2024 are based upon updated automated valuations as of February 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:

	March 31, 2024
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables (2)		Amortized Cost >90 Days and  Accruing
	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	8	$	743	2	$	85	2	$	17,555	12	$	18,383	$	1,561,658	$	1,580,041	$	—
Commercial real estate	10	20,582		—	—		5	24,056		15	44,638		8,064,198		8,108,836		—
Commercial construction	1	1,019		—	—		—	—		1	1,019		827,881		828,900		—
Small business	17	539		6	321		1	5		24	865		260,825		261,690		—
Residential real estate	14	3,482		3	248		16	2,641		33	6,371		2,414,334		2,420,705		—
Home equity	17	1,200		3	89		15	1,702		35	2,991		1,097,595		1,100,586		—
Other consumer (1)	415	238		14	31		—	—		429	269		29,567		29,836		—
Total	482	$	27,803	28	$	774	39	$	45,959	549	$	74,536	$	14,256,058	$	14,330,594	$	—

	December 31, 2023
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables (2)		Amortized Cost >90 Days and  Accruing
	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	6	$	398	1	$	17,538	2	$	673	9	$	18,609	$	1,561,377	$	1,579,986	$	—
Commercial real estate	8	14,674		2	8,419		3	7,279		13	30,372		8,011,136		8,041,508		—
Commercial construction	—	—		—	—		—	—		—	—		849,586		849,586		—
Small business	6	400		1	20		6	243		13	663		251,293		251,956		—
Residential real estate	24	6,216		7	2,187		13	1,573		44	9,976		2,414,778		2,424,754		—
Home equity	23	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		—
Total	480	$	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 $5.7 million and $6.4 million at March 31, 2024 and December 31, 2023, respectively. Net unamortized discounts on acquired loans included in the ending balance was $8.5 million and $8.6 million at March 31, 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
	March 31, 2024						December 31, 2023
	With Allowance for Credit Losses		Without Allowance for Credit Losses (1)		Total		With Allowance for Credit Losses		Without Allowance for Credit Losses (1)		Total
	(Dollars in thousands)
Commercial and industrial	$	17,640	$	—	$	17,640	$	19,890	$	298	$	20,188
Commercial real estate	16,361		7,852		24,213		11,911		11,041		22,952
Small business	316		—		316		394		4		398
Residential real estate	9,947		—		9,947		7,634		—		7,634
Home equity	4,805		—		4,805		3,171		—		3,171
Other consumer	20		—		20		40		—		40
Total nonaccrual loans	$	49,089	$	7,852	$	56,941	$	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.

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 March 31, 2024:

	Payment Status (Amortized Cost Basis)
	Current		30-89 Days Past Due		90+ Days Past Due
	(Dollars in thousands)
Loan Type
Commercial and industrial	$	11,963	$	—	$	—
Commercial real estate	27,094		—		136
Small business	159		—		—
Total	$	49,932	$	—	$	136

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 three months ended March 31, 2024 and 2023, respectively, disaggregated by class of financing receivable and type of modification granted:

	Three Months Ended March 31, 2024			Three Months Ended March 31, 2023
	Interest Rate Reduction
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Type	(Dollars in thousands)
Small business	$	51	0.02%	$	—	—%
Total	$	51		$	—
	Term Extension
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	9,725	0.62%	$	—	—%
Commercial real estate	3,375		0.04%	2,540		0.03%
Commercial construction	10,644		1.28%	—		—%
Small business	—		—%	105		0.05%
Total	$	23,744		$	2,645
	Other-Than-Insignificant Payment Delay
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	1,809	0.11%	$	2,805	0.17%
Commercial real estate	6,351		0.08%	7,013		0.09%
Total	$	8,160		$	9,818
	Combination - Interest Rate Reduction and Term Extension
	Amortized Cost Basis		% of Total Class of Financing Receivable	Amortized Cost Basis		% of Total Class of Financing Receivable
Loan Category	(Dollars in thousands)
Commercial and industrial	$	179	0.01%	$	—	—%
Small business	—		—%	44		0.02%
Home equity	72		0.01%	—		—%
Total	251			44
Grand Total	$	32,206		$	12,507

The following table describes the financial effect of modifications made to borrowers experiencing financial difficulty for the periods indicated:

Three Months Ended March 31, 2024
Term Extension
Loan Category	Financial Effect
Commercial and industrial	Added a weighted-average contractual term of 3 months to the life of the loans
Commercial real estate	Added a weighted-average contractual term of 6 months to the life of the loans
Commercial construction	Added a weighted-average contractual term of 5 months to the life of the loans
Interest Rate Reduction
Loan Category	Financial Effect
Small business	Reduced contractual rate on one loan from 11.00% to 8.20%
Combination - Interest Rate Reduction and Term Extension
Loan Category	Financial Effect
Commercial and industrial	Reduced contractual rate on one loan from 10.10% to 7.20% and added a weighted average contractual term of 1.5 years
Home equity	Reduced contractual rate on one loan from 10.00% to 6.80% and added a weighted-average contractual term of 8.1 years
Three Months Ended March 31, 2023
Term Extension
Loan Category	Financial Effect
Commercial real estate	Added a weighted-average contractual term of 2 months to the life of the loans
Small business	Added a weighted-average contractual term of 4.3 years to the life of the loans
Interest Rate Reduction
Loan Category	Financial Effect
Small business	Reduced weighted-average contractual interest rate from 10.00% to 6.50%

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Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

The Company made the following awards of time vested restricted stock:

Date	Shares Granted	Plan	Grant Date Fair Value Per Share		Vesting Period
2/22/2024	106,200	2023 Omnibus Incentive Plan	$	52.73	Ratably over 3 years from grant date

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Derivatives and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes

The following tables reflect the Company's derivative positions at the dates indicated below for interest rate swaps which qualify as cash flow hedges for accounting purposes:

March 31, 2024
				Weighted Average Rate
	Notional Amount		Average Maturity	Current Rate Received		Pay Fixed Swap Rate		Fair Value
	(in thousands)		(in years)					(in thousands)
Interest rate swaps on borrowings	$	400,000	2.33	5.32	%	3.67	%	$	6,695
				Current Rate Paid		Receive Fixed Swap Rate
Interest rate swaps on loans	800,000		2.40	5.33	%	2.70	%	(34,008)
				Current Rate Paid		Receive Fixed Swap Rate Cap - Floor
Interest rate collars on loans	300,000		1.47	5.43	%	3.09% - 2.01%		(4,679)
Total	$	1,500,000						$	(31,992)
December 31, 2023
				Weighted Average Rate
	Notional Amount		Average Maturity	Current Rate Received		Pay Fixed Swap Rate		Fair Value
	(in thousands)		(in years)					(in thousands)
Interest rate swaps on borrowings	$	400,000	2.58	5.34	%	3.67	%	$	1,901
	Notional Amount		Average Maturity	Current Rate Paid		Receive Fixed Swap Rate		Fair Value
Interest rate swaps on loans	850,000		2.50	5.36	%	2.72	%	(27,350)
				Current Rate Paid		Receive Fixed Swap Rate Cap - Floor
Interest rate collars on loans	350,000		1.48	5.45	%	3.09% - 2.12%		(4,714)
Total	$	1,600,000						$	(30,163)

Summary of customer related derivative positions, not designated as hedging

The following tables reflect the Company’s customer related derivative positions at the dates indicated below for those derivatives not designated as hedging:

		Notional Amount Maturing
	Number of  Positions  (1)	Less than 1 year		Less than 2 years		Less than 3 years		Less than 4 years		Thereafter		Total		Fair Value
	March 31, 2024
	(Dollars in thousands)
Loan level swaps
Receive fixed, pay variable	276	$	134,253	$	237,171	$	235,290	$	247,638	$	910,248	$	1,764,600	$	(110,626)
Pay fixed, receive variable	276	134,253		237,171		235,290		247,638		910,248		1,764,600		110,519
Foreign exchange contracts
Buys foreign currency, sells U.S. currency	24	85,312		—		—		—		—		85,312		(463)
Buys U.S. currency, sells foreign currency	24	85,312		—		—		—		—		85,312		502
Risk participation agreements
Participation out	17	24,063		—		—		34,491		92,158		150,712		111
Participation in	12	—		—		36,275		—		15,639		51,914		(24)
		Notional Amount Maturing
	Number of  Positions  (1)	Less than 1 year		Less than 2 years		Less than 3 years		Less than 4 years		Thereafter		Total		Fair Value
	December 31, 2023
	(Dollars in thousands)
Loan level swaps
Receive fixed, pay variable	281	$	80,682	$	252,260	$	223,928	$	230,513	$	997,108	$	1,784,491	$	(88,415)
Pay fixed, receive variable	281	80,682		252,260		223,928		230,513		997,108		1,784,491		88,280
Foreign exchange contracts
Buys foreign currency, sells U.S. currency	22	65,586		12,957		—		—		—		78,543		2,197
Buys U.S. currency, sells foreign currency	22	65,586		12,957		—		—		—		78,543		(2,160)
Risk participation agreements
Participation out	17	—		24,193		—		13,119		114,027		151,339		200
Participation in	8	—		—		13,016		18,989		15,725		47,730		(44)

(1)The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.

Fair value of derivative financial instruments as well as their classification on the balance sheet

The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet and the potential effect of netting arrangements on its financial position, at the dates indicated:

	Asset Derivatives (1)						Liability Derivatives (2)
	Fair Value at			Fair Value at			Fair Value at			Fair Value at
	March 31 2024			December 31 2023			March 31 2024			December 31 2023
	(Dollars in thousands)
Derivatives designated as hedges
Interest rate derivatives	$	6,695	(3)	$	1,927		$	38,687	(4)	$	32,090	(4)
Derivatives not designated as hedges
Customer Related Positions
Loan level derivatives	111,146		(3)	99,416		(3)	111,252		(4)	99,551		(4)
Foreign exchange contracts	1,304			2,220			1,265			2,183
Risk participation agreements	111			200			24			44
Mortgage Derivatives
Interest rate lock commitments	357			168			85			—
Forward sale loan commitments	129			17			—			—
Total derivatives not designated as hedges	113,047			102,021			112,711			101,778
Total	119,742			103,948			151,398			133,868
Netting Adjustments (5)	(57,796)			(48,253)			32,323			25,360
Net Derivatives on the Balance Sheet	61,946			55,695			119,075			108,508
Financial instruments (6)	6,220			12,018			6,220			12,018
Cash collateral pledged (received)	(26,969)			(17,076)			—			—
Net Derivative Amounts	$	28,757		$	26,601		$	112,855		$	96,490

(1)All asset derivatives are reflected in other assets on the balance sheet.

(2)All liability derivatives are reflected in other liabilities on the balance sheet.

(3)Approximately $426,000 and $3.2 million of accrued interest receivable is included in the fair value of interest rate and loan level derivative assets, respectively, at March 31, 2024, in comparison to accrued interest receivable of approximately $316,000 and $3.0 million, respectively, at December 31, 2023.

(4)Approximately $1.8 million and $3.2 million of accrued interest payable is included in the fair value of interest rate and loan level derivative liabilities, respectively, at March 31, 2024, in comparison to accrued interest payable of approximately $1.9 million and $3.0 million, respectively, at December 31, 2023.

(5)Netting adjustments represent the amounts recorded to convert derivative assets and liabilities cleared through CME from a gross basis to a net basis, inclusive of the variation margin payments, in accordance with applicable accounting guidance.

(6)Reflects offsetting derivative positions with the same counterparty that are not netted on the balance sheet.

Effect of derivative financial instruments included in OCI and current earnings

The table below presents the effect of the Company’s derivative financial instruments included in OCI and current earnings for the periods indicated:

	Three Months Ended
	March 31
	2024		2023
	(Dollars in thousands)
Derivatives designated as hedges
(Loss) gain in OCI on derivatives (effective portion), net of tax	$	(1,488)	$	10,163
Loss reclassified from OCI into interest income or interest expense (effective portion)	$	(5,856)	$	(6,239)
Derivatives not designated as hedges
Changes in fair value of customer related positions
Other income	$	35	$	272
Other expense	(72)		(77)
Changes in fair value of mortgage derivatives
Mortgage banking income	131		(46)
Total	$	94	$	149

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

Assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows at the dates indicated:

			Fair Value Measurements at Reporting Date Using
	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	March 31, 2024
	(Dollars in thousands)
Recurring fair value measurements
Assets
Trading securities	$	4,759	$	4,759	$	—	$	—
Equity securities	22,858		22,858		—		—
Securities available for sale
U.S. government agency securities	205,676		—		205,676		—
U.S. treasury securities	718,838		—		718,838		—
Agency mortgage-backed securities	270,605		—		270,605		—
Agency collateralized mortgage obligations	32,088		—		32,088		—
State, county, and municipal securities	191		—		191		—
Pooled trust preferred securities issued by banks and insurers	1,036		—		1,036		—
Small business administration pooled securities	44,397		—		44,397		—
Loans held for sale	11,340		—		11,340		—
Derivative instruments	119,742		—		119,742		—
Liabilities
Derivative instruments	151,398		—		151,398		—
Total recurring fair value measurements	$	1,280,132	$	27,617	$	1,252,515	$	—
Nonrecurring fair value measurements
Assets
Individually assessed collateral dependent loans (1)	$	29,289	$	—	$	—	$	29,289
Total nonrecurring fair value measurements	$	29,289	$	—	$	—	$	29,289

			Fair Value Measurements at Reporting Date Using
	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2023
	(Dollars in thousands)
Recurring fair value measurements
Assets
Trading securities	$	4,987	$	4,987	$	—	$	—
Equity securities	22,510		22,510		—		—
Securities available for sale
U.S. government agency securities	207,138		—		207,138		—
U.S. treasury securities	769,102		—		769,102		—
Agency mortgage-backed securities	277,047		—		277,047		—
Agency collateralized mortgage obligations	33,189		—		33,189		—
State, county, and municipal securities	190		—		190		—
Pooled trust preferred securities issued by banks and insurers	1,018		—		1,018		—
Small business administration pooled securities	46,572		—		46,572		—
Loans held for sale	6,368		—		6,368		—
Derivative instruments	103,948		—		103,948		—
Liabilities
Derivative instruments	133,868		—		133,868		—
Total recurring fair value measurements, net	$	1,338,201	$	27,497	$	1,310,704	$	—
Nonrecurring fair value measurements
Assets
Individually assessed collateral dependent loans (1)	$	28,881	$	—	$	—	$	28,881
Total nonrecurring fair value measurements	$	28,881	$	—	$	—	$	28,881

(1)     The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.

The estimated fair values and related carrying amounts for assets and liabilities

The estimated fair values and related carrying amounts for assets and liabilities for which fair value is only disclosed are shown below at the dates indicated:

					Fair Value Measurements at Reporting Date Using
	Carrying Value		Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	March 31, 2024
	(Dollars in thousands)
Financial assets
Securities held to maturity (a)
U.S. government agency securities	$	29,086	$	28,243	$	—	$	28,243	$	—
U.S. treasury securities	100,732		90,810		—		90,810		—
Agency mortgage-backed securities	819,912		748,601		—		748,601		—
Agency collateralized mortgage obligations	465,016		393,258		—		393,258		—
Single issuer trust preferred securities issued by banks	1,500		1,372		—		1,372		—
Small business administration pooled securities	129,021		121,337		—		121,337		—
Loans, net of allowance for credit losses (b)	14,154,357		13,074,151		—		—		13,074,151
Federal Home Loan Bank stock (c)	46,304		46,304		—		46,304		—
Cash surrender value of life insurance policies (d)	298,352		298,352		—		298,352		—
Financial liabilities
Deposit liabilities, other than time deposits (e)	$	12,610,236	$	12,610,236	$	—	$	12,610,236	$	—
Time certificates of deposits (f)	2,432,985		2,418,961		—		2,418,961		—
Federal Home Loan Bank borrowings (f)	962,535		960,942		—		960,942		—
Junior subordinated debentures (g)	62,858		59,740		—		59,740		—

					Fair Value Measurements at Reporting Date Using
	Carrying Value		Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2023
	(Dollars in thousands)
Financial assets
Securities held to maturity (a)
U.S. government agency securities	$	29,521	$	28,408	$	—	$	28,408	$	—
U.S. treasury securities	100,712		91,535		—		91,535		—
Agency mortgage-backed securities	829,431		763,728		—		763,728		—
Agency collateralized mortgage obligations	477,517		407,911		—		407,911		—
Single issuer trust preferred securities issued by banks	1,500		1,373		—		1,373		—
Small business administration pooled securities	130,426		124,653		—		124,653		—
Loans, net of allowance for credit losses (b)	14,106,967		13,079,368		—		—		13,079,368
Federal Home Loan Bank stock (c)	43,557		43,557		—		43,557		—
Cash surrender value of life insurance policies (d)	297,387		297,387		—		297,387		—
Financial liabilities
Deposit liabilities, other than time deposits (e)	$	12,684,068	$	12,684,068	$	—	$	12,684,068	$	—
Time certificates of deposits (f)	2,181,479		2,166,573		—		2,166,573		—
Federal Home Loan Bank borrowings (f)	1,105,541		1,103,845		—		1,103,845		—
Junior subordinated debentures (g)	62,858		58,911		—		58,911		—
Subordinated debentures (f)	49,980		49,613		—		—		49,613

(a)The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis.

(b)Fair value of loans is measured using the exit price valuation method, determined primarily by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows, while incorporating liquidity and credit assumptions. Additionally, this amount excludes individually assessed collateral dependent loans, which are deemed to be marked to fair value on a nonrecurring basis.

(c)Federal Home Loan Bank stock has no quoted market value and is carried at cost; therefore, the carrying amount approximates fair value.

(d)Cash surrender value of life insurance policies is recorded at its cash surrender value (or the amount that can be realized upon surrender of the policy), therefore, carrying amount approximates fair value.

(e)Fair value of demand deposits, savings and interest checking accounts and money market deposits is the amount payable on demand at the reporting date.

(f)Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities.

(g)Fair value was determined based upon market prices of securities with similar terms and maturities.

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Revenue Recognition Revenue (Tables)

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

The following table presents the revenue streams that the Company has disaggregated as of the periods indicated:

	Three Months Ended
	March 31 2024		March 31 2023
	(Dollars in thousands)
Deposit account fees (inclusive of cash management fees)	$	6,228	$	5,916
Interchange fees	2,897		2,788
ATM fees	1,056		938
Investment management - wealth management and advisory services	9,080		8,185
Investment management - retail investments and insurance revenue	861		1,594
Payment processing income	538		470
Credit card income	533		493
Other noninterest income	1,114		1,198
Total noninterest income in-scope of ASC 606	22,307		21,582
Total noninterest income out-of-scope of ASC 606	7,636		6,660
Total noninterest income	$	29,943	$	28,242

Contract with Customer, Asset and Liability [Table Text Block]

The following table provides the amount of investment management revenue earned but not received as of the dates indicated:

	March 31, 2024		December 31, 2023
	(Dollars in thousands)
Receivables, included in other assets	$	5,635	$	5,509

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Comprehensive Income/Loss (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Comprehensive income

The following tables present a reconciliation of the changes in the components of other comprehensive income (loss) for the periods indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss):

	Three Months Ended March 31, 2024
	Pre-Tax Amount		Tax (Expense) Benefit		After Tax Amount
	(Dollars in thousands)
Change in fair value of securities available for sale	$	(3,952)	$	944	$	(3,008)
Less: net security losses reclassified into other noninterest expense	—		—		—
Net change in fair value of securities available for sale	(3,952)		944		(3,008)
Change in fair value of cash flow hedges	(7,904)		2,161		(5,743)
Less: net cash flow hedge losses reclassified into interest income or interest expense	(5,856)		1,601		(4,255)
Net change in fair value of cash flow hedges	(2,048)		560		(1,488)
Amortization of net actuarial gains	(25)		7		(18)
Amortization of net prior service costs	4		(1)		3
Net change in other comprehensive income for defined benefit postretirement plans (1)	(21)		6		(15)
Total other comprehensive loss	$	(6,021)	$	1,510	$	(4,511)

	Three Months Ended March 31, 2023
	Pre-Tax Amount		Tax (Expense) Benefit		After Tax Amount
	(Dollars in thousands)
Change in fair value of securities available for sale	$	22,185	$	(5,117)	$	17,068
Less: net security losses reclassified into other noninterest expense	—		—		—
Net change in fair value of securities available for sale	22,185		(5,117)		17,068
Change in fair value of cash flow hedges	7,899		(2,221)		5,678
Less: net cash flow hedge losses reclassified into interest income or interest expense	(6,239)		1,754		(4,485)
Net change in fair value of cash flow hedges	14,138		(3,975)		10,163
Amortization of net actuarial gains	(137)		38		(99)
Amortization of net prior service costs	10		(3)		7
Net change in other comprehensive income for defined benefit postretirement plans (1)	(127)		35		(92)
Total other comprehensive income	$	36,196	$	(9,057)	$	27,139

(1)The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 12 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2023 Form 10-K.

Company's accumulated other comprehensive loss, net of tax

Information on the Company’s accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the dates indicated:

	Unrealized Gain (Loss) on Securities		Unrealized Gain (Loss) on Cash Flow Hedge		Defined Benefit Postretirement Plans		Accumulated Other Comprehensive Income (Loss)
	(Dollars in thousands)
	2024
Beginning balance: January 1, 2024	$	(96,231)	$	(20,575)	$	1,979	$	(114,827)
Net change in other comprehensive income (loss)	(3,008)		(1,488)		(15)		(4,511)
Ending balance: March 31, 2024	$	(99,239)	$	(22,063)	$	1,964	$	(119,338)
	2023
Beginning balance: January 1, 2023	$	(128,657)	$	(36,630)	$	2,203	$	(163,084)
Net change in other comprehensive income (loss)	17,068		10,163		(92)		27,139
Ending balance: March 31, 2023	$	(111,589)	$	(26,467)	$	2,111	$	(135,945)

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]

The following table summarizes the above financial instruments at the dates indicated:

	March 31, 2024		December 31, 2023
	(Dollars in thousands)
Commitments to extend credit	$	4,704,239	$	4,632,105
Loan exposures sold with recourse	150,625		153,850
Standby letters of credit	21,626		21,427
Deferred standby letter of credit fees	190		155

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Securities Securities (Equity gains and losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Equity securities gains and losses [Abstract]
Equity Securities, FV-NI, Gain (Loss)	$ 609	$ 368
Equity Securities, FV-NI, Realized Gain (Loss)	435	1
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ 174	$ 367

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Securities (Reconciliation of fair value of available for sale securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,402,389	$ 1,459,862
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	25	30
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(129,583)	(125,636)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,272,831	1,334,256
U.S. government agency securities
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	230,013	230,198
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(24,337)	(23,060)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	205,676	207,138
U.S. treasury securities
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	774,714	824,597
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(55,876)	(55,495)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	718,838	769,102
Agency mortgage-backed securities
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	309,560	314,269
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	25	24
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(38,980)	(37,246)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	270,605	277,047
Agency Collateralized Mortgage Obligations [Member]
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	34,644	35,713
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	6
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(2,556)	(2,530)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	32,088	33,189
US States and Political Subdivisions Debt Securities [Member]
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	195	195
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(4)	(5)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	191	190
Pooled trust preferred securities issued by banks and insurers
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	1,180	1,188
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(144)	(170)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,036	1,018
Small Business Administration Pooled Securities [Member]
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	52,083	53,702
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(7,686)	(7,130)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	$ 44,397	$ 46,572

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Securities Securities (Available for sale securities in continuous unrealized loss position) (Details) $ in Thousands	Mar. 31, 2024 USD ($) holding	Dec. 31, 2023 USD ($) holding
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	172	163
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 2,123	$ 1,620
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(23)	(18)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,268,945	1,328,959
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(129,560)	(125,618)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,271,068	1,330,579
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 129,583	$ 125,636
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	125	115
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 857	$ 1,091
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(8)	(11)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	267,985	273,447
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(38,972)	(37,235)
Debt Securities, Available-for-sale, Unrealized Loss Position	268,842	274,538
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 38,980	$ 37,246
Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	12	12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,075	$ 339
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(11)	(2)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	31,013	31,682
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,545)	(2,528)
Debt Securities, Available-for-sale, Unrealized Loss Position	32,088	32,021
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 2,556	$ 2,530
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 191	$ 190
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(4)	(5)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	191	190
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 4	$ 5
Pooled trust preferred securities issued by banks and insurers
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,036	1,018
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(144)	(170)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,036	1,018
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 144	$ 170
Small Business Administration Pooled Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	8	8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	44,397	46,572
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(7,686)	(7,130)
Debt Securities, Available-for-sale, Unrealized Loss Position	44,397	46,572
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 7,686	$ 7,130
U.S. government agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	9	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	205,676	207,138
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(24,337)	(23,060)
Debt Securities, Available-for-sale, Unrealized Loss Position	205,676	207,138
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 24,337	$ 23,060
US Treasury Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	16	17
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	718,838	769,102
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(55,876)	(55,495)
Debt Securities, Available-for-sale, Unrealized Loss Position	718,838	769,102
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 55,876	$ 55,495

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Securities Securities (Reconciliation of amortized cost of held to maturity securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	$ 61	$ 559
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(161,707)	(152,058)
Debt Securities, Held-to-maturity, Fair Value	1,383,621	1,417,608
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,545,267	1,569,107
Small Business Administration Pooled Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	384
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(7,684)	(6,157)
Debt Securities, Held-to-maturity, Fair Value	121,337	124,653
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	129,021	130,426
Collateralized Debt Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(71,758)	(69,606)
Debt Securities, Held-to-maturity, Fair Value	393,258	407,911
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	465,016	477,517
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	61	175
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(71,372)	(65,878)
Debt Securities, Held-to-maturity, Fair Value	748,601	763,728
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	819,912	829,431
US Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(9,922)	(9,177)
Debt Securities, Held-to-maturity, Fair Value	90,810	91,535
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	100,732	100,712
U.S. government agency securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(843)	(1,113)
Debt Securities, Held-to-maturity, Fair Value	28,243	28,408
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	29,086	29,521
Trust Preferred Securities Subject to Mandatory Redemption [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(128)	(127)
Debt Securities, Held-to-maturity, Fair Value	1,372	1,373
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,500	$ 1,500

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Securities (Schedule of Contractual Maturities of Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,402,389	$ 1,459,862
Available for Sale, Fair Value
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,272,831	1,334,256
Held to Maturity, Fair Value
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,545,267	1,569,107
Held to Maturity, Fair Value, Total	1,383,621	1,417,608
Available for Sale Securities and Held to Maturity Securities Amortized Cost	2,947,656
Debt Securities, Available-for-sale and Held-to-maturity	2,656,452
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	226,495
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	220,678
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	1,530,817
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	1,395,521
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	287,108
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	252,069
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Amortized Cost	903,236
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Fair Value	788,184
U.S. government agency securities
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	199,221
Available for Sale, Amortized Cost, Due after five to ten years	30,792
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	230,013	230,198
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	178,800
Available for Sale, Fair Value, Due after five to ten years	26,876
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	205,676	207,138
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	29,086
Held to Maturity, Amortized Cost, Due after one year to five years	0
Held to Maturity, Amortized Cost, Due after five to ten years	0
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	28,243
Held to Maturity, Fair Value, Due after one year to five years	0
Held to Maturity, Fair Value, Due after five to ten years	0
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	29,086	29,521
Held to Maturity, Fair Value, Total	28,243	28,408
Small Business Administration Pooled Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	52,083
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	52,083	53,702
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	44,397
Debt Securities, Available-for-Sale, Excluding Accrued Interest	44,397	46,572
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	0
Held to Maturity, Amortized Cost, Due after five to ten years	7,688
Held to Maturity, Amortized Cost, Due after ten years	121,333
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	0
Held to Maturity, Fair Value, Due after five to ten years	7,048
Held to Maturity, Fair Value, Due after ten years	114,289
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	129,021	130,426
Held to Maturity, Fair Value, Total	121,337	124,653
Debt Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	197,409
Available for Sale, Amortized Cost, Due after one year to five years	917,338
Available for Sale, Amortized Cost, Due after five to ten years	77,490
Available for Sale, Amortized Cost, Due after ten years	210,152
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	192,435
Available for Sale, Fair Value, Due after one year to five years	831,009
Available for Sale, Fair Value, Due after five to ten years	67,617
Available for Sale, Fair Value, Due after ten years	181,770
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	29,086
Held to Maturity, Amortized Cost, Due after one year to five years	613,479
Held to Maturity, Amortized Cost, Due after five to ten years	209,618
Held to Maturity, Amortized Cost, Due after ten years	693,084
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	28,243
Held to Maturity, Fair Value, Due after one year to five years	564,512
Held to Maturity, Fair Value, Due after five to ten years	184,452
Held to Maturity, Fair Value, Due after ten years	606,414
Held to Maturity, Fair Value, Total	1,383,621
Pooled trust preferred securities issued by banks and insurers
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	1,180
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	1,180	1,188
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	1,036
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,036	1,018
Single Issuer Trust Preferred Securities Issued by Banks and Insurers
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	1,500
Held to Maturity, Amortized Cost, Due after five to ten years	0
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	1,372
Held to Maturity, Fair Value, Due after five to ten years	0
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,500	1,500
Held to Maturity, Fair Value, Total	1,372	1,373
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	195
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	195	195
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	191
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	191	190
Agency Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	2,837
Available for Sale, Amortized Cost, Due after ten years	31,807
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	34,644	35,713
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	2,586
Available for Sale, Fair Value, Due after ten years	29,502
Debt Securities, Available-for-Sale, Excluding Accrued Interest	32,088	33,189
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	63,456
Held to Maturity, Amortized Cost, Due after five to ten years	19,228
Held to Maturity, Amortized Cost, Due after ten years	382,332
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	58,528
Held to Maturity, Fair Value, Due after five to ten years	16,930
Held to Maturity, Fair Value, Due after ten years	317,800
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	465,016	477,517
Held to Maturity, Fair Value, Total	393,258	407,911
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	1
Available for Sale, Amortized Cost, Due after one year to five years	140,616
Available for Sale, Amortized Cost, Due after five to ten years	43,861
Available for Sale, Amortized Cost, Due after ten years	125,082
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	309,560	314,269
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	1
Available for Sale, Fair Value, Due after one year to five years	125,614
Available for Sale, Fair Value, Due after five to ten years	38,155
Available for Sale, Fair Value, Due after ten years	106,835
Debt Securities, Available-for-Sale, Excluding Accrued Interest	270,605	277,047
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	448,783
Held to Maturity, Amortized Cost, Due after five to ten years	181,710
Held to Maturity, Amortized Cost, Due after ten years	189,419
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	414,620
Held to Maturity, Fair Value, Due after five to ten years	159,656
Held to Maturity, Fair Value, Due after ten years	174,325
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	819,912	829,431
Held to Maturity, Fair Value, Total	748,601	763,728
US Treasury Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	197,408
Available for Sale, Amortized Cost, Due after one year to five years	577,306
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	774,714	824,597
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	192,434
Available for Sale, Fair Value, Due after one year to five years	526,404
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	718,838	769,102
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	99,740
Held to Maturity, Amortized Cost, Due after five to ten years	992
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	89,992
Held to Maturity, Fair Value, Due after five to ten years	818
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	100,732	100,712
Held to Maturity, Fair Value, Total	$ 90,810	$ 91,535

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Securities (Details Textual) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Trading	$ 4,759		$ 4,987
Debt Securities, Available-for-sale, Past due	0		0
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity	0		0
Debt Securities, Available-for-sale, Past due	0		0
Debt Securities, Available-for-sale, Nonaccrual	0		0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Nonaccrual	0		0
Securities (Textual) [Abstract]
Callable Securities in Investment Portfolio	25,500
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity	0		0
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	3,800		3,400
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss	4,500		4,300
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0		0
Debt Securities, Available-for-Sale, Accrued Interest Writeoff	0	$ 0
Debt Securities, Held-to-Maturity, Accrued Interest, Writeoff	0	0
Debt Securities, Available-for-sale, Realized Gain (Loss)	0	0
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss)	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease)	0	$ 0
Equity	22,858		22,510
Asset Pledged as Collateral
Securities (Textual) [Abstract]
Debt Securities	1,600,000		1,700,000
Debt Securities	$ 1,600,000		$ 1,700,000

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Loans, Allowance for Credit Losses and Credit Quality - Financing Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		$ 142,222	$ 152,419
Allowance for Loan and Lease Losses, Write-offs		(881)	(815)
Recoveries			277
Provision for credit losses		5,000	7,250
Ending balance	[1]	146,948	159,131
Allowance for Loan and Lease Loss, Recovery of Bad Debts		607
Provision for Loan and Lease Losses		5,000
Accounts Receivable, Noncurrent, Accrued Interest, Writeoff		385	80
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		19,243	27,559
Allowance for Loan and Lease Losses, Write-offs		0	(281)
Recoveries			5
Provision for credit losses			9,649
Ending balance	[1]	20,489	36,932
Allowance for Loan and Lease Loss, Recovery of Bad Debts		85
Provision for Loan and Lease Losses		1,161
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		74,148	77,799
Allowance for Loan and Lease Losses, Write-offs		0	0
Recoveries			0
Provision for credit losses			(1,601)
Ending balance	[1]	77,929	76,198
Allowance for Loan and Lease Loss, Recovery of Bad Debts		0
Provision for Loan and Lease Losses		3,781
Construction Loans [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		7,683	10,762
Allowance for Loan and Lease Losses, Write-offs		0	0
Recoveries			0
Provision for credit losses			(1,514)
Ending balance	[1]	7,573	9,248
Allowance for Loan and Lease Loss, Recovery of Bad Debts		0
Provision for Loan and Lease Losses		(110)
Small Business [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		3,963	2,834
Allowance for Loan and Lease Losses, Write-offs		(109)	(28)
Recoveries			31
Provision for credit losses			501
Ending balance	[1]	4,028	3,338
Allowance for Loan and Lease Loss, Recovery of Bad Debts		39
Provision for Loan and Lease Losses		135
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		23,637	20,973
Allowance for Loan and Lease Losses, Write-offs		0	0
Recoveries			0
Provision for credit losses			(519)
Ending balance	[1]	24,180	20,454
Allowance for Loan and Lease Loss, Recovery of Bad Debts		0
Provision for Loan and Lease Losses		543
Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		12,797	11,504
Allowance for Loan and Lease Losses, Write-offs		0	0
Recoveries			16
Provision for credit losses			908
Ending balance	[1]	12,042	12,428
Allowance for Loan and Lease Loss, Recovery of Bad Debts		133
Provision for Loan and Lease Losses		(888)
Consumer - Other [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		751	988
Allowance for Loan and Lease Losses, Write-offs		(772)	(506)
Recoveries			225
Provision for credit losses			(174)
Ending balance	[1]	707	$ 533
Allowance for Loan and Lease Loss, Recovery of Bad Debts		350
Provision for Loan and Lease Losses		$ 378

[1] Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $59.3 million and $52.7 million as of March 31, 2024 and March 31, 2023, respectively.

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Loans, Allowance for Credit Losses and Credit Quality - Finance Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024		Mar. 31, 2023		Dec. 31, 2023
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		$ 524,105		$ 586,214
2021		2,202,825		2,790,090
2020		2,482,942		2,459,335
2019		2,072,585		1,759,576
2018		1,595,566		997,571
Prior		3,732,923		3,595,331
Revolving Loans		1,714,753		1,758,898
Revolving converted to Term		4,895		937
Total loans		14,330,594	[1]			$ 14,278,070
Total loans		14,330,594		13,947,952		14,278,070
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		763		498
2023		0		0
2022		28		0
2021		0		0
2020		0		0
Prior		0		34
Revolving Loans		90		283
Revolving converted to Term		0		0
Total		881		815
Commercial And Industrial [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		164,051		153,554
2021		226,555		269,940
2020		150,188		124,991
2019		73,532		95,734
2018		70,071		56,910
Prior		150,562		86,734
Revolving Loans		745,082		862,019
Revolving converted to Term		0		0
Total loans		1,580,041	[1]			1,579,986
Total loans		1,580,041		1,649,882	[1]	1,579,986
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		0		0
2023		0		0
2022		0		0
2021		0		0
2020		0		0
Prior		0		34
Revolving Loans		0		247
Revolving converted to Term		0		0
Total		0		281
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022	[2]	159,082		153,554
2021	[2]	223,301		262,933
2020	[2]	148,288		122,770
2019	[2]	73,012		94,702
2018	[2]	60,865		54,925
Prior	[2]	146,495		85,391
Revolving Loans	[2]	685,258		811,795
Revolving converted to Term	[2]	0		0
Total loans	[1],[2]	1,496,301
Total loans	[1],[2]			1,586,070
Commercial And Industrial [Member] | Potential Weakness [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		3,160
2021		3,254		4,712
2020		1,843		705
2019		322		868
2018		9,206		1,608
Prior		4,024		1,342
Revolving Loans		31,525		24,114
Revolving converted to Term		0		0
Total loans	[1]	53,334
Total loans	[1]			33,349
Commercial And Industrial [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		1,809
2021				2,295
2020		57		1,516
2019		198		164
2018		0		377
Prior		43		1
Revolving Loans		28,299		2,936
Revolving converted to Term		0		0
Total loans	[1]	30,406
Total loans	[1]			7,289
Commercial And Industrial [Member] | Partial Loss Probable [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		0		0
Revolving Loans		0		23,174
Revolving converted to Term		0		0
Total loans	[1]	0
Total loans	[1]			23,174
Commercial And Industrial [Member] | Definite Loss [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	0
Total loans	[1]			0
Commercial Real Estate [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		199,502		208,097
2021		1,216,718		1,291,497
2020		1,257,680		1,539,931
2019		1,381,462		1,294,456
2018		1,260,901		737,385
Prior		2,698,980		2,688,918
Revolving Loans		93,345		59,810
Revolving converted to Term		248		0
Total loans		8,108,836	[1]			8,041,508
Total loans		8,108,836		7,820,094	[1]	8,041,508
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		0		0
2023		0		0
2022		0		0
2021		0		0
2020		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total		0		0
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		193,152		204,462
2021		1,127,417		1,199,328
2020		1,201,044		1,459,526
2019		1,304,867		1,259,511
2018		1,212,201		720,208
Prior		2,562,542		2,439,424
Revolving Loans		93,048		59,810
Revolving converted to Term		248		0
Total loans	[1]	7,694,519
Total loans	[1]			7,342,269
Commercial Real Estate [Member] | Potential Weakness [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022				154
2021		61,943		52,961
2020		38,590		67,200
2019		53,837		29,611
2018		44,806		13,139
Prior		124,614		225,673
Revolving Loans		297		0
Revolving converted to Term		0		0
Total loans	[1]	324,087
Total loans	[1]			388,738
Commercial Real Estate [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		6,350		3,481
2021		27,358		39,208
2020		18,046		13,205
2019		22,758		5,334
2018		3,894		4,038
Prior		3,973		23,821
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	82,379
Total loans	[1]			89,087
Commercial Real Estate [Member] | Partial Loss Probable [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		7,851		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	7,851
Total loans	[1]			0
Commercial Real Estate [Member] | Definite Loss [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	0
Total loans	[1]			0
Construction Loans [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		111,469		116,412
2021		183,508		473,258
2020		355,369		274,777
2019		125,325		93,838
2018		7,971		62,033
Prior		25,184		4,755
Revolving Loans		19,398		21,237
Revolving converted to Term		676
Total loans		828,900	[1]			849,586
Total loans		828,900		1,046,310	[1]	849,586
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		0		0
2023		0		0
2022		0		0
2021		0		0
2020		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total		0		0
Construction Loans [Member] | Pass [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		97,558		90,362
2021		164,784		461,824
2020		336,768		266,758
2019		100,371		89,919
2018		7,971		62,033
Prior		25,184		4,755
Revolving Loans		19,398		21,237
Revolving converted to Term		676
Total loans	[1]	752,710
Total loans	[1]			996,888
Construction Loans [Member] | Potential Weakness [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		3,326		18,431
2021		18,724		0
2020		0		5,889
2019		5,618		3,919
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	27,668
Total loans	[1]			28,239
Construction Loans [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		10,585		7,619
2021		0		11,434
2020		18,601		2,130
2019		19,336		0
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	48,522
Total loans	[1]			21,183
Construction Loans [Member] | Partial Loss Probable [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	0
Total loans	[1]			0
Construction Loans [Member] | Definite Loss [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	0
Total loans	[1]			0
Small Business [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		14,887		9,875
2021		50,464		54,384
2020		49,109		43,571
2019		37,844		30,272
2018		24,151		16,176
Prior		34,086		27,450
Revolving Loans		51,149		44,138
Revolving converted to Term		0		0
Total loans		261,690	[1]			251,956
Total loans		261,690		225,866	[1]	251,956
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		0		0
2023		0		0
2022		28		0
2021		0		0
2020		0		0
Prior		0		0
Revolving Loans		81		28
Revolving converted to Term		0		0
Total		109		28
Small Business [Member] | Pass [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		14,707		9,770
2021		49,885		54,258
2020		48,880		43,458
2019		37,682		29,810
2018		23,538		16,173
Prior		33,246		26,536
Revolving Loans		49,943		42,746
Revolving converted to Term		0		0
Total loans	[1]	257,881
Total loans	[1]			222,751
Small Business [Member] | Potential Weakness [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		59		0
2020		5
2019		75		158
2018		152
Prior		182		228
Revolving Loans		481		527
Revolving converted to Term		0		0
Total loans	[1]	954
Total loans	[1]			913
Small Business [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		180		105
2021		520		126
2020		224		113
2019		87		304
2018		461		3
Prior		658		686
Revolving Loans		725		865
Revolving converted to Term		0		0
Total loans	[1]	2,855
Total loans	[1]			2,202
Small Business [Member] | Partial Loss Probable [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	0
Total loans	[1]			0
Small Business [Member] | Definite Loss [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	0
Total loans	[1]			0
Residential Real Estate [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		29,922		91,404
2021		497,477		658,273
2020		633,135		416,067
2019		399,440		190,785
2018		183,544		93,084
Prior		677,187		646,031
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans		2,420,705	[1]			2,424,754
Total loans		2,420,705		2,095,644	[1]	2,424,754
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		0		0
2023		0		0
2022		0		0
2021		0		0
2020		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total		0		0
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		29,922		91,404
2021		497,477		658,273
2020		633,135		416,067
2019		399,440		190,313
2018		183,544		92,927
Prior		674,298		644,659
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	2,417,816
Total loans	[1]			2,093,643
Residential Real Estate [Member] | Default [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		472
2018		0		157
Prior		2,889		1,372
Revolving Loans		0		0
Revolving converted to Term		0		0
Total loans	[1]	2,889
Total loans	[1]			2,001
Home Equity Loan [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		4,208		6,812
2021		27,517		42,352
2020		37,245		58,830
2019		54,001		53,565
2018		48,389		31,463
Prior		145,199		139,554
Revolving Loans		780,056		757,242
Revolving converted to Term		3,971		937
Total loans	[1]	1,100,586
Total loans		1,100,586		1,090,755	[1]	$ 1,097,626
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		0		0
2023		0		0
2022		0		0
2021		0		0
2020		0		0
Prior		0		0
Revolving Loans		0		0
Revolving converted to Term		0		0
Total		0		0
Home Equity Loan [Member] | Pass [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		4,208		6,812
2021		27,517		42,352
2020		37,162		58,830
2019		54,001		53,565
2018		48,389		31,341
Prior		145,029		139,472
Revolving Loans		778,842		756,103
Revolving converted to Term		3,736		937
Total loans	[1]	1,098,884
Total loans	[1]			1,089,412
Home Equity Loan [Member] | Default [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		83		0
2019		0		0
2018		0		122
Prior		170		82
Revolving Loans		1,214		1,139
Revolving converted to Term		235		0
Total loans	[1]	1,702
Total loans	[1]			1,343
Consumer Loan [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		66		60
2021		586		386
2020		216		1,168
2019		981		926
2018		539		520
Prior		1,725		1,889
Revolving Loans		25,723		14,452
Revolving converted to Term		0		0
Total loans	[1]	29,836
Total loans	[1]			19,401
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2024		763		498
2023		0		0
2022		0		0
2021		0		0
2020		0		0
Prior		0		0
Revolving Loans		9		8
Revolving converted to Term		0		0
Total		772		506
Consumer Loan [Member] | Pass [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		66		60
2021		586		386
2020		216		1,168
2019		981		926
2018		539		514
Prior		1,725		1,852
Revolving Loans		25,723		14,450
Revolving converted to Term		0		0
Total loans	[1]	29,836
Total loans	[1]			19,356
Consumer Loan [Member] | Default [Member]
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
2022		0		0
2021		0		0
2020		0		0
2019		0		0
2018		0		6
Prior		0		37
Revolving Loans		0		2
Revolving converted to Term		0		0
Total loans	[1]	$ 0
Total loans	[1]			$ 45

[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.

XML

Loans, Allowance for Credit Losses and Credit Quality - FICO and LTV (Details) - score		Mar. 31, 2024	Dec. 31, 2023
Residential Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating	[1]	755	754
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	[2]	59.70%	59.80%
Home Equity Portfolio
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating	[1]	770	770
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	[2],[3]	43.90%	43.30%

[1] The average FICO scores at March 31, 2024 are based upon rescores from March 2024 as available for previously originated loans, or origination score data for loans booked in March 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 March 31, 2024 are based upon updated automated valuations as of February 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.

XML

Loans, Allowance for Credit Losses and Credit Quality - Finance Receivable, Nonaccrual (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance	[1]	$ 49,089	$ 43,040
Financing Receivable, Nonaccrual, No Allowance	[1]	7,852	11,343
Financing Receivable, Nonaccrual	[1]	56,941	54,383
Commercial And Industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		17,640	19,890
Financing Receivable, Nonaccrual, No Allowance			298
Financing Receivable, Nonaccrual		17,640	20,188
Commercial Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		16,361	11,911
Financing Receivable, Nonaccrual, No Allowance		7,852	11,041
Financing Receivable, Nonaccrual		24,213	22,952
Small Business [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		316	394
Financing Receivable, Nonaccrual, No Allowance		0	4
Financing Receivable, Nonaccrual		316	398
Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		9,947	7,634
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual		9,947	7,634
Home Equity Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		4,805	3,171
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual		4,805	3,171
Consumer - Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		20	40
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual		$ 20	$ 40

[1] (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.

XML

Loans, Allowance for Credit Losses and Credit Quality - Foreclosed Residential Real Estate Property (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Foreclosed residential real estate property held by the creditor	$ 110	$ 110
Mortgage Loans in Process of Foreclosure, Amount	$ 1,900	$ 1,697

XML

Loans, Allowance for Credit Losses and Credit Quality - Financing Receivable Past Due (Details) $ in Thousands		Mar. 31, 2024 USD ($) loan		Dec. 31, 2023 USD ($) loan	Mar. 31, 2023 USD ($)
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		482		480
Total loans		$ 14,330,594	[1]	$ 14,278,070
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		28		29
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		39		40
Number Of Financing Receivables Total Past Due | loan		549		549
Total		$ 14,330,594		$ 14,278,070	$ 13,947,952
Financing Receivable, 90 Days or More Past Due, Still Accruing		0		0
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		27,803		23,616
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		774		29,433
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		45,959		10,305
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		74,536		63,354
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 14,256,058		$ 14,214,716
Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		8		6
Total loans		$ 1,580,041	[1]	$ 1,579,986
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		2		1
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		2		2
Number Of Financing Receivables Total Past Due | loan		12		9
Total		$ 1,580,041		$ 1,579,986	1,649,882	[1]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0		0
Commercial And Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		743		398
Commercial And Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		85		17,538
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		17,555		673
Commercial And Industrial [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		18,383		18,609
Commercial And Industrial [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 1,561,658		$ 1,561,377
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		10		8
Total loans		$ 8,108,836	[1]	$ 8,041,508
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		0		2
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		5		3
Number Of Financing Receivables Total Past Due | loan		15		13
Total		$ 8,108,836		$ 8,041,508	7,820,094	[1]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0		0
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		20,582		14,674
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		0		8,419
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		24,056		7,279
Commercial Real Estate [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		44,638		30,372
Commercial Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 8,064,198		$ 8,011,136
Construction Loans [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		1		0
Total loans		$ 828,900	[1]	$ 849,586
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		0		0
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		0		0
Number Of Financing Receivables Total Past Due | loan		1		0
Total		$ 828,900		$ 849,586	1,046,310	[1]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0		0
Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		1,019		0
Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		0		0
Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		0		0
Construction Loans [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		1,019		0
Construction Loans [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 827,881		$ 849,586
Small Business [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		17		6
Total loans		$ 261,690	[1]	$ 251,956
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		6		1
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		1		6
Number Of Financing Receivables Total Past Due | loan		24		13
Total		$ 261,690		$ 251,956	225,866	[1]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0		0
Small Business [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		539		400
Small Business [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		321		20
Small Business [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		5		243
Small Business [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		865		663
Small Business [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 260,825		$ 251,293
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		14		24
Total loans		$ 2,420,705	[1]	$ 2,424,754
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		3		7
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		16		13
Number Of Financing Receivables Total Past Due | loan		33		44
Total		$ 2,420,705		$ 2,424,754	2,095,644	[1]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0		0
Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		3,482		6,216
Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		248		2,187
Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		2,641		1,573
Residential Real Estate [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		6,371		9,976
Residential Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 2,414,334		$ 2,414,778
Home Equity Loan [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		17		23
Total loans	[1]	$ 1,100,586
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		3		4
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		15		10
Number Of Financing Receivables Total Past Due | loan		35		37
Total		$ 1,100,586		$ 1,097,626	$ 1,090,755	[1]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0		0
Home Equity Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		1,200		1,640
Home Equity Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		89		1,238
Home Equity Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		1,702		529
Home Equity Loan [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		2,991		3,407
Home Equity Loan [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 1,097,595		$ 1,094,219
Consumer - Other [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	[2]	415		413
Total loans		$ 29,836		$ 32,654
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	[2]	14		14
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	[2]	0		6
Number Of Financing Receivables Total Past Due | loan	[2]	429		433
Total	[2]	$ 29,836		$ 32,654
Financing Receivable, 90 Days or More Past Due, Still Accruing	[2]	0		0
Consumer - Other [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans	[2]	238		288
Consumer - Other [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans	[2]	31		31
Consumer - Other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans	[2]	0		8
Consumer - Other [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans	[2]	269		327
Consumer - Other [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans	[2]	$ 29,567		$ 32,327

[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. (2)The amount of net deferred costs on originated loans included in the ending balance was $5.7 million and $6.4 million at March 31, 2024 and December 31, 2023, respectively. Net unamortized discounts on acquired loans included in the ending balance was $8.5 million and $8.6 million at March 31, 2024 and December 31, 2023, respectively.

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Loans, Allowance for Credit Losses and Credit Quality - Textual (Details) - USD ($)		3 Months Ended
		Mar. 31, 2024		Dec. 31, 2023	Mar. 31, 2023	[1]	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses		$ 146,948,000	[1]	$ 142,222,000	$ 159,131,000		$ 152,419,000
Unfunded commitments		$ 1,500,000		1,300,000
Days to be termed as non accrual loans		90 days
Additional commitments to lend to borrowers experiencing financial difficulty party to a loan modification		$ 640,000
Financing Receivable, Nonaccrual	[2]	56,941,000		54,383,000
Financing receivable, net deferred costs		5,700,000		6,400,000
Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount)		8,500,000		8,600,000
Financial Asset, Not Past Due | Aging Loan Modification Member
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		49,932,000
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses		20,489,000	[1]	19,243,000	36,932,000		27,559,000
Financing Receivable, Nonaccrual		17,640,000		20,188,000
Commercial And Industrial [Member] | Financial Asset, Not Past Due | Aging Loan Modification Member
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		11,963,000
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses		77,929,000	[1]	74,148,000	$ 76,198,000		$ 77,799,000
Financing Receivable, Nonaccrual		24,213,000		$ 22,952,000
TDRs modified during the prior twelve months subsequently defaulted		136,000
Commercial Real Estate [Member] | Financial Asset, Not Past Due | Aging Loan Modification Member
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		$ 27,094,000

[1] Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $59.3 million and $52.7 million as of March 31, 2024 and March 31, 2023, respectively.

[2] (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.

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Loans, Allowance for Credit Losses and Credit Quality - Amortized Cost of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 32,206	$ 12,507
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	23,744	2,645
Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	8,160	9,818
Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	251	44
Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Accumulated	51	0
Commercial Real Estate [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 3,375	$ 2,540
% of Total Class of Financing Receivable	0.04%	0.03%
Added weighted-average contractual term to the life of the loan	6 months	2 months
Commercial Real Estate [Member] | Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 6,351	$ 7,013
% of Total Class of Financing Receivable	0.08%	0.09%
Small Business [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 0	$ 105
% of Total Class of Financing Receivable	0.00%	0.05%
Added weighted-average contractual term to the life of the loan		4 years 3 months 18 days
Small Business [Member] | Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 0	$ 44
% of Total Class of Financing Receivable	0.00%	0.02%
Small Business [Member] | Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
% of Total Class of Financing Receivable	0.02%	0.00%
Financing Receivable, Modified, Accumulated	$ 51	$ 0
Small Business [Member] | Combination - Interest Rate Reduction and Term Extension | Maximum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	11.00%	10.00%
Small Business [Member] | Combination - Interest Rate Reduction and Term Extension | Minimum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	8.20%	6.50%
Commercial And Industrial [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 9,725	$ 0
% of Total Class of Financing Receivable	0.62%	0.00%
Added weighted-average contractual term to the life of the loan	3 months
Commercial And Industrial [Member] | Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 1,809	$ 2,805
% of Total Class of Financing Receivable	0.11%	0.17%
Commercial And Industrial [Member] | Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
% of Total Class of Financing Receivable	0.01%	0.00%
Financing Receivable, Modified, Accumulated	$ 179	$ 0
Added weighted-average contractual term to the life of the loan	1 year 6 months
Commercial And Industrial [Member] | Combination - Interest Rate Reduction and Term Extension | Maximum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	10.10%
Commercial And Industrial [Member] | Combination - Interest Rate Reduction and Term Extension | Minimum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	7.20%
Construction Loans [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 10,644	$ 0
% of Total Class of Financing Receivable	1.28%	0.00%
Home Equity Loan [Member] | Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Added weighted-average contractual term to the life of the loan	8 years 1 month 6 days
Home Equity Loan [Member] | Combination - Interest Rate Reduction and Term Extension | Maximum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	10.00%
Home Equity Loan [Member] | Combination - Interest Rate Reduction and Term Extension | Minimum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	6.80%
Home Equity Loan [Member] | Extended Maturity and Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
% of Total Class of Financing Receivable	0.01%	0.00%
Financing Receivable, Modified, Accumulated	$ 72	$ 0

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Modifications BFD - Payment Status (Details) - Aging Loan Modification Member $ in Thousands	Mar. 31, 2024 USD ($)
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 49,932
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	136
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	0
Commercial And Industrial [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	11,963
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	0
Commercial And Industrial [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	0
Commercial Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	27,094
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	136
Commercial Real Estate [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	0
Small Business [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	159
Small Business [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	0
Small Business [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 0

XML

Loans, Allowance for Credit Losses and Credit Quality - Financial Effects of Loan Modifications (Details)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Commercial Real Estate [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Added weighted-average contractual term to the life of the loan	6 months	2 months
% of Total Class of Financing Receivable	0.04%	0.03%
Commercial Real Estate [Member] | Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
% of Total Class of Financing Receivable	0.08%	0.09%
Small Business [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Added weighted-average contractual term to the life of the loan		4 years 3 months 18 days
% of Total Class of Financing Receivable	0.00%	0.05%
Small Business [Member] | Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
% of Total Class of Financing Receivable	0.02%	0.00%
Small Business [Member] | Combination - Interest Rate Reduction and Term Extension | Maximum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	11.00%	10.00%
Small Business [Member] | Combination - Interest Rate Reduction and Term Extension | Minimum [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted-average contractual interest rate	8.20%	6.50%
Commercial And Industrial [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Added weighted-average contractual term to the life of the loan	3 months
% of Total Class of Financing Receivable	0.62%	0.00%
Commercial And Industrial [Member] | Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
% of Total Class of Financing Receivable	0.11%	0.17%
Construction [Member] | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Added weighted-average contractual term to the life of the loan	5 months

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Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument, Redemption [Line Items]
Subordinated Debt		$ 49,980
Subordinated note due 2029 | Subordinated Debt [Member]
Debt Instrument, Redemption [Line Items]
Subordinated Debt	$ 50,000

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Stock Based Compensation (Awards of Restricted Stock) (Details) - Ratably Over 3 Years - 2/22/2024 - 2023 Omnibus Incentive Plan - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted | shares	106,200
Grant Date Fair Value Per Share | $ / shares	$ 52.73
Vesting Terms	Ratably over 3 years from grant date

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Stock Based Compensation Performance-based Restricted Stock Textual (Details) - Performance Shares [Member]	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Employee Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	80.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	11,874
2023 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	41,200
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 52.73

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Derivatives and Hedging Activities (Derivative Positions for Interest Rate Swaps which Qualify as Hedges) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Interest rate swaps on borrowings [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value	$ 6,695	$ 1,901
Derivative, Notional Amount	$ 400,000	$ 400,000
Derivative, Average Remaining Maturity	2 years 3 months 29 days	2 years 6 months 29 days
Derivative, Average Variable Interest Rate	5.32%	5.34%
Derivative, Average Fixed Interest Rate	3.67%	3.67%
Interest rate swaps on loans [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value	$ (34,008)	$ (27,350)
Derivative, Notional Amount	$ 800,000	$ 850,000
Derivative, Average Remaining Maturity	2 years 4 months 24 days	2 years 6 months
Derivative, Average Variable Interest Rate	5.33%	5.36%
Derivative, Average Fixed Interest Rate	2.70%	2.72%
Interest rate collars on loans [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value	$ (4,679)	$ (4,714)
Derivative, Notional Amount	$ 300,000	$ 350,000
Derivative, Average Remaining Maturity	1 year 5 months 19 days	1 year 5 months 23 days
Derivative, Average Variable Interest Rate	5.43%	5.45%
Derivative, Average Cap Interest Rate	3.09%	3.09%
Derivative, Average Floor Interest Rate	2.01%	2.12%
Interest Rate Swap [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value	$ (31,992)	$ (30,163)
Derivative, Notional Amount	$ 1,500,000	$ 1,600,000

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Derivatives and Hedging Activities (Customer Related Derivative Positions - Not Designated as Hedges) (Details) - Not Designated as Hedging Instrument $ in Thousands		Mar. 31, 2024 USD ($) position	Dec. 31, 2023 USD ($) position
Receive fixed, pay variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	276	281
Less than 1 year		$ 134,253	$ 80,682
Less than 2 years		237,171	252,260
Less than 3 years		235,290	223,928
Less than 4 years		247,638	230,513
Thereafter		910,248	997,108
Derivative, Notional Amount		1,764,600	1,784,491
Fair Value		$ (110,626)	$ (88,415)
Pay fixed, receive variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	276	281
Less than 1 year		$ 134,253	$ 80,682
Less than 2 years		237,171	252,260
Less than 3 years		235,290	223,928
Less than 4 years		247,638	230,513
Thereafter		910,248	997,108
Derivative, Notional Amount		1,764,600	1,784,491
Fair Value		$ 110,519	$ 88,280
Buys foreign currency, sells U.S. currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	24	22
Less than 1 year		$ 85,312	$ 65,586
Less than 2 years		0	12,957
Less than 3 years		0	0
Less than 4 years		0	0
Thereafter		0	0
Derivative, Notional Amount		85,312	78,543
Fair Value		$ (463)	$ 2,197
Buys U.S. currency, sells foreign currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	24	22
Less than 1 year		$ 85,312	$ 65,586
Less than 2 years		0	12,957
Less than 3 years		0	0
Less than 4 years		0	0
Thereafter		0	0
Derivative, Notional Amount		85,312	78,543
Fair Value		$ 502	$ (2,160)
Risk Participated Out | Risk Participation Agreement
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position		17	17
Less than 1 year		$ 24,063	$ 0
Less than 2 years		0	24,193
Less than 3 years		0	0
Less than 4 years		34,491	13,119
Thereafter		92,158	114,027
Derivative, Notional Amount		150,712	151,339
Fair Value		$ 111	$ 200
Risk Participated In | Risk Participation Agreement
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position		12	8
Less than 1 year		$ 0	$ 0
Less than 2 years			0
Less than 3 years		36,275	13,016
Less than 4 years		0	18,989
Thereafter		15,639	15,725
Derivative, Notional Amount		51,914	47,730
Fair Value		$ (24)	$ (44)

[1] The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.

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Derivatives and Hedging Activities (FV of Derivative Financial Instruments and Classification on Balance Sheet) (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Derivative Asset	[1]	$ 61,946	$ 55,695
Derivative Liability	[2]	119,075	108,508
Derivative Asset, Fair Value, Amount Offset Against Collateral	[1]	28,757	26,601
Derivative, Collateral, Obligation to Return Securities	[3]	6,220	12,018
Derivative, Collateral, Right to Reclaim Securities	[3]	6,220	12,018
Derivative, Collateral, Obligation to Return Cash		(26,969)	(17,076)
Derivative, Collateral, Right to Reclaim Cash		0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	[2]	112,855	96,490
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	[1]	113,047	102,021
Derivative Asset, Fair Value, Gross Asset	[1]	119,742	103,948
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	[2]	112,711	101,778
Liability Derivatives	[2]	151,398	133,868
Interest Rate Swap [Member] | Derivatives designated as hedges [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Assets, at Fair Value	[1]	6,695	1,927	[4]
Interest Rate Swap [Member] | Derivatives designated as hedges [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	[2],[5]	38,687	32,090
Loan level swaps | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1],[4]	111,146	99,416
Loan level swaps | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	[2],[5]	111,252	99,551
Foreign Exchange Contract [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	1,304	2,220
Foreign Exchange Contract [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	[2]	1,265	2,183
Risk Participation Agreement | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Credit Risk Derivative Assets, at Fair Value	[1]	111	200
Risk Participation Agreement | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Credit Risk Derivative Liabilities, at Fair Value	[2]	24	44
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Asset at Fair Value	[1]	357	168
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Asset at Fair Value	[1]	129	17
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Liabilities at Fair Value		85	0	[2]
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Liabilities at Fair Value	[2]	0	0
CME [Member]
Derivatives, Fair Value [Line Items]
Derivative, Collateral, Obligation to Return Cash	[6]	57,796	48,253
Derivative, Collateral, Right to Reclaim Cash	[6]	$ 32,323	$ 25,360

[1] All asset derivatives are reflected in other assets on the balance sheet.

[2] All liability derivatives are reflected in other liabilities on the balance sheet.

[3] Reflects offsetting derivative positions with the same counterparty that are not netted on the balance sheet.

[4] Approximately $426,000 and $3.2 million of accrued interest receivable is included in the fair value of interest rate and loan level derivative assets, respectively, at March 31, 2024, in comparison to accrued interest receivable of approximately $316,000 and $3.0 million, respectively, at December 31, 2023.

[5] Approximately $1.8 million and $3.2 million of accrued interest payable is included in the fair value of interest rate and loan level derivative liabilities, respectively, at March 31, 2024, in comparison to accrued interest payable of approximately $1.9 million and $3.0 million, respectively, at December 31, 2023.

[6] Netting adjustments represent the amounts recorded to convert derivative assets and liabilities cleared through CME from a gross basis to a net basis, inclusive of the variation margin payments, in accordance with applicable accounting guidance.

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Derivatives and Hedging Activities (Derivative Financial Instruments included in OCI and Current Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	$ (1,488)	$ 10,163
Derivatives designated as hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss reclassified from OCI into interest income or interest expense (effective portion)	(5,856)	(6,239)
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	94	149
Other expense | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	35	272
Changes in fair value of mortgage derivatives | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	(72)	(77)
Total | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Mortgage banking income	131	(46)
Derivatives designated as hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	$ (1,488)	$ 10,163

XML

Derivatives and Hedging Activities (Textual) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Derivative [Line Items]
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge	5 years
Gain (Loss) on Sales of Loans, Net	$ 593,000	$ 174,000
Exposure to Institutional Counterparties	117,500,000		$ 95,800,000
Customer related positions	313,000		5,600,000
Fair Value Hedges, Net	0		$ 0
Change in Fair Value on Loans Held for Sale	70,000	(17,000)
Interest Receivable	59,300,000	$ 52,700,000
Interest Income [Member]
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	4,900,000
Interest Expense [Member]
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ (20,600,000)
Interest rate collars on loans [Member]
Derivative [Line Items]
Derivative, Average Cap Interest Rate	3.09%		3.09%
Derivative, Average Floor Interest Rate	2.01%		2.12%
Derivative, Notional Amount	$ 300,000,000		$ 350,000,000
Loan level swaps
Derivative [Line Items]
Interest Payable, Current	(3,200,000)		(3,000,000)
Interest Receivable	3,200,000		3,000,000
Interest rate swaps on borrowings [Member]
Derivative [Line Items]
Derivative, Notional Amount	400,000,000		400,000,000
Interest rate swaps on loans [Member]
Derivative [Line Items]
Derivative, Notional Amount	800,000,000		850,000,000
Interest Rate Swap [Member]
Derivative [Line Items]
Interest Payable, Current	(1,800,000)		(1,900,000)
Derivative, Notional Amount	1,500,000,000		1,600,000,000
Interest Receivable	$ 426,000		$ 316,000

XML

Fair Value Measurements (Details 1) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
ASSETS
Trading		$ 4,759	$ 4,987
Equity		22,858	22,510
Recurring fair value measurements
ASSETS
Trading		4,759	4,987
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		1,280,132	1,338,201
Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		22,858	22,510
Recurring fair value measurements | U.S. government agency securities
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		205,676	207,138
Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		270,605	277,047
Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		32,088	33,189
Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		191	190
Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		1,036	1,018
Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		44,397	46,572
Recurring fair value measurements | Loans held for sale
ASSETS
Loans Held-for-sale, Fair Value Disclosure		11,340	6,368
Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset		119,742	103,948
Recurring fair value measurements | Derivative instruments
LIABILITIES
Financial and Nonfinancial Liabilities, Fair Value Disclosure		151,398	133,868
Recurring fair value measurements | US Treasury Securities [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		718,838	769,102
Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		29,289	28,881
Nonrecurring fair value measurements | Collateral Dependent Loans [Member]
ASSETS
Assets, Fair Value Disclosure	[1]	29,289	28,881
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements
ASSETS
Trading		4,759	4,987
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		27,617	27,497
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		22,858	22,510
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)			0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		1,252,515	1,310,704
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		0	0
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | U.S. government agency securities
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		205,676	207,138
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		270,605	277,047
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		32,088	33,189
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		191	190
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		1,036	1,018
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		44,397	46,572
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Loans held for sale
ASSETS
Loans Held-for-sale, Fair Value Disclosure		11,340	6,368
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset		119,742	103,948
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative instruments
LIABILITIES
Financial and Nonfinancial Liabilities, Fair Value Disclosure		151,398	133,868
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | US Treasury Securities [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		718,838	769,102
Significant Other Observable Inputs (Level 2) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)			0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,402,389 and $1,459,862)		0	0
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		29,289	28,881
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements | Collateral Dependent Loans [Member]
ASSETS
Assets, Fair Value Disclosure	[1]	$ 29,289	$ 28,881

[1] The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.

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Fair Value Measurements (Details 2) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
ASSETS
Held to Maturity, Fair Value, Total		$ 1,383,621	$ 1,417,608
Federal Home Loan Bank Stock		46,304	43,557
Bank Owned Life Insurance		298,352	297,387
LIABILITIES
Federal Home Loan Bank borrowings (f)		962,535	1,105,541
Subordinated Debt			49,980
Deposits [Member]
LIABILITIES
Time certificates of deposits (f)	[1]	12,610,236	12,684,068
Accrued Liabilities, Fair Value Disclosure	[1]	12,610,236	12,684,068
Time certificates of deposits (f)
LIABILITIES
Time certificates of deposits (f)	[2]	2,432,985	2,181,479
Accrued Liabilities, Fair Value Disclosure	[2]	2,418,961	2,166,573
Federal Home Loan Bank borrowings (f)
LIABILITIES
Federal Home Loan Bank borrowings (f)	[2]	962,535	1,105,541
Federal Home Loan Bank Borrowings, Fair Value Disclosure	[2]	960,942	1,103,845
Junior subordinated debentures (g)
LIABILITIES
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	[3]	62,858	62,858
Accrued Liabilities, Fair Value Disclosure	[3]	59,740	58,911
Subordinated debentures (f)
LIABILITIES
Subordinated Debt	[2]		49,980
Accrued Liabilities, Fair Value Disclosure	[2]		49,613
Significant Other Observable Inputs (Level 2) | Deposits [Member]
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[1]	12,610,236	12,684,068
Significant Other Observable Inputs (Level 2) | Time certificates of deposits (f)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[2]	2,418,961	2,166,573
Significant Other Observable Inputs (Level 2) | Federal Home Loan Bank borrowings (f)
LIABILITIES
Federal Home Loan Bank Borrowings, Fair Value Disclosure	[2]	960,942	1,103,845
Significant Other Observable Inputs (Level 2) | Junior subordinated debentures (g)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[3]	59,740	58,911
Significant Unobservable Inputs (Level 3) | Subordinated debentures (f)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[2]		49,613
U.S. Government agency securities
ASSETS
Debt Securities, Held-to-maturity		29,086	29,521	[4]
Held to Maturity, Fair Value, Total		28,243	28,408	[4]
U.S. Government agency securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total		28,243	28,408	[4]
U.S. treasury securities
ASSETS
Debt Securities, Held-to-maturity	[4]	100,732	100,712
Held to Maturity, Fair Value, Total	[4]	90,810	91,535
U.S. treasury securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	90,810	91,535
Agency mortgage-backed securities
ASSETS
Debt Securities, Held-to-maturity	[4]	819,912	829,431
Held to Maturity, Fair Value, Total	[4]	748,601	763,728
Agency mortgage-backed securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	748,601	763,728
Agency collateralized mortgage obligations
ASSETS
Debt Securities, Held-to-maturity	[4]	465,016	477,517
Held to Maturity, Fair Value, Total	[4]	393,258	407,911
Agency collateralized mortgage obligations | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	393,258	407,911
Single issuer trust preferred securities issued by banks
ASSETS
Debt Securities, Held-to-maturity	[4]	1,500	1,500
Held to Maturity, Fair Value, Total	[4]	1,372	1,373
Single issuer trust preferred securities issued by banks | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	1,372	1,373
Small Business Administration Pooled Securities [Member]
ASSETS
Debt Securities, Held-to-maturity	[4]	129,021	130,426
Held to Maturity, Fair Value, Total	[4]	121,337	124,653
Small Business Administration Pooled Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
ASSETS
Held to Maturity, Fair Value, Total	[4]	0	0
Small Business Administration Pooled Securities [Member] | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	121,337	124,653
Small Business Administration Pooled Securities [Member] | Significant Unobservable Inputs (Level 3)
ASSETS
Held to Maturity, Fair Value, Total	[4]	0	0
Loans, net of allowance for credit losses (b)
ASSETS
Loans, net of allowance for credit losses (b)	[5]	14,154,357	14,106,967
Loans Receivable, Fair Value Disclosure	[5]	13,074,151	13,079,368
Loans, net of allowance for credit losses (b) | Significant Unobservable Inputs (Level 3)
ASSETS
Loans Receivable, Fair Value Disclosure	[5]	13,074,151	13,079,368
Investment in Federal Home Loan Bank Stock [Member]
ASSETS
Federal Home Loan Bank Stock	[6]	46,304	43,557
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	46,304	43,557
Investment in Federal Home Loan Bank Stock [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
ASSETS
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	0	0
Investment in Federal Home Loan Bank Stock [Member] | Significant Other Observable Inputs (Level 2)
ASSETS
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	46,304	43,557
Investment in Federal Home Loan Bank Stock [Member] | Significant Unobservable Inputs (Level 3)
ASSETS
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	0	0
Cash Surrender Value [Member]
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	298,352	297,387
Bank Owned Life Insurance	[7]	298,352	297,387
Cash Surrender Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	0	0
Cash Surrender Value [Member] | Significant Other Observable Inputs (Level 2)
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	298,352	297,387
Cash Surrender Value [Member] | Significant Unobservable Inputs (Level 3)
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	$ 0	$ 0

[1] Fair value of demand deposits, savings and interest checking accounts and money market deposits is the amount payable on demand at the reporting date.

[2] Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities.

[3] Fair value was determined based upon market prices of securities with similar terms and maturities.

[4] The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis.

[5] Fair value of loans is measured using the exit price valuation method, determined primarily by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows, while incorporating liquidity and credit assumptions. Additionally, this amount excludes individually assessed collateral dependent loans, which are deemed to be marked to fair value on a nonrecurring basis.

[6] Federal Home Loan Bank stock has no quoted market value and is carried at cost; therefore, the carrying amount approximates fair value.

[7] Cash surrender value of life insurance policies is recorded at its cash surrender value (or the amount that can be realized upon surrender of the policy), therefore, carrying amount approximates fair value.

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Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Other noninterest income - ASC 606	$ 1,114	$ 1,198
Total noninterest income in scope of ASC 606	22,307	21,582
Total noninterest income out of scope of ASC 606	7,636	6,660
Noninterest Income	29,943	28,242
Deposit Account [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6,228	5,916
Credit Card, Merchant Discount [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,897	2,788
ATM Charge [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,056	938
Investment Advisory, Management and Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	9,080	8,185
Investment Advisory, Retail Investment and Insurance Service [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	861	1,594
Merchant Processing [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	538	470
Credit Card Income [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 533	$ 493

XML

Revenue Recognition Contract with Customer, Asset (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Investment Management Income Receivable	$ 5,635	$ 5,509

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Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Equity [Abstract]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax		$ (2,048)	$ 14,138
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax		560	(3,975)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(1,488)	10,163
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount		(3,952)	22,185
Change in fair value of securities available for sale, tax (expense) benefit		944	(5,117)
Change in fair value of securities available for sale, after tax amount		(3,008)	17,068
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax		0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		0	0
Change in fair value of securities available for sale, pre tax amount		(3,952)	22,185
Change in fair value of securities available for sale, tax (expense) benefit		944	(5,117)
Change in fair value of securities available for sale, after tax amount		(3,008)	17,068
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax		(7,904)	7,899
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax		2,161	(2,221)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax		(5,743)	5,678
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax		(5,856)	(6,239)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, Tax		1,601	1,754
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax		(4,255)	(4,485)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax		(25)	(137)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax		7	38
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax		(18)	(99)
Amortization of certain costs included in net periodic retirement costs, pre tax amount		4	10
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit		(1)	(3)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax		3	7
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	[1]	(21)	(127)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	[1]	6	35
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	[1]	(15)	(92)
Total other comprehensive income, pre tax amount		(6,021)	36,196
Total other comprehensive income, tax (expense) benefit		1,510	(9,057)
Total other comprehensive income, after tax amount		$ (4,511)	$ 27,139

[1] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 12 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2023 Form 10-K.

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Comprehensive Income/Loss (Comprised of the following Components) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (114,827)	$ (163,084)
Net change in other comprehensive income (loss)	(4,511)	27,139
Ending Balance	(119,338)	(135,945)
Unrealized Gain (Loss) on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(96,231)	(128,657)
Net change in other comprehensive income (loss)	(3,008)	17,068
Ending Balance	(99,239)	(111,589)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(20,575)	(36,630)
Net change in other comprehensive income (loss)	(1,488)	10,163
Ending Balance	(22,063)	(26,467)
Defined Benefit Postretirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1,979	2,203
Net change in other comprehensive income (loss)	(15)	(92)
Ending Balance	1,964	2,111
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net change in other comprehensive income (loss)	$ (4,511)	$ 27,139

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Commitments and contingencies Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 4,704,239	$ 4,632,105
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	21,626	21,427
Deferred standby letter of credit fees [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	190	155
Obligation to Repurchase Receivables Sold [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 150,625	$ 153,850

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Commitments and contingencies Textual (Details)	Mar. 31, 2024
Minimum [Member]
Lessee, Operating Lease, Renewal Term	1 year
Maximum [Member]
Lessee, Operating Lease, Renewal Term	20 years

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Subsequent Events (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Subsequent Event [Line Items]
Gain (Loss) on Sales of Loans, Net	$ 593,000	$ 174,000