Brookline Bancorp (BRKL) 10-Q 7 May 24 2024 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2024	Apr. 30, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	0-23695
Entity Registrant Name	BROOKLINE BANCORP, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3402944
Entity Address, Address Line One	131 Clarendon Street
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02116
City Area Code	617
Local Phone Number	425-4600
Title of 12(b) Security	Common Stock
Trading Symbol	BRKL
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		88,894,577
Entity Central Index Key	0001049782
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false

Unaudited Consolidated Balance

Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
ASSETS
Cash and due from banks	$ 45,708	$ 34,514
Short-term investments	256,178	98,513
Total cash and cash equivalents	301,886	133,027
Investment securities available-for-sale	865,798	916,601
Total investment securities	865,798	916,601
Allowance for investment security losses	(398)	(441)
Net investment securities	865,400	916,160
Loans held-for-sale	6,717	0
Total loans and leases	9,655,086	9,641,589
Allowance for loan and lease losses	(120,124)	(117,522)
Net loans and leases	9,534,962	9,524,067
Restricted equity securities	74,709	77,595
Premises and equipment, net of accumulated depreciation of $102,439 and $100,408, respectively	89,707	89,853
Right-of-use asset operating leases	33,133	30,863
Deferred tax asset	60,484	56,952
Goodwill	241,222	241,222
Identified intangible assets, net of accumulated amortization of $11,488 and $47,963, respectively	22,499	24,207
Other real estate owned ("OREO") and repossessed assets, net	1,817	1,694
Other assets	310,195	286,616
Total assets	11,542,731	11,382,256
Deposits:
Demand checking accounts	1,629,371	1,678,406
Interest-bearing deposits	7,089,282	6,869,719
Total deposits	8,718,653	8,548,125
Borrowed funds:
Advances from the Federal Home Loan Bank ("FHLB")	1,150,153	1,223,226
Subordinated debentures and notes	84,223	84,188
Other borrowed funds	127,505	69,256
Total borrowed funds	1,361,881	1,376,670
Operating lease liabilities	34,235	31,998
Mortgagors' escrow accounts	16,245	17,239
Reserve for unfunded credits	15,807	19,767
Accrued expenses and other liabilities	201,679	189,813
Total liabilities	10,348,500	10,183,612
Commitments and contingencies (Note 12)
Brookline Bancorp, Inc. stockholders' equity:
Common stock, $0.01 par value; 200,000,000 shares authorized; 96,998,075 shares issued and 96,998,075 shares issued, respectively	970	970
Additional paid-in capital	903,726	902,659
Retained earnings	441,285	438,722
Accumulated other comprehensive (loss) income	(60,841)	(52,798)
Treasury stock, at cost; 7,354,399 shares and 7,354,399 shares, respectively	(90,909)	(90,909)
Total stockholders' equity	1,194,231	1,198,644
Total liabilities and stockholders' equity	11,542,731	11,382,256
Commercial real estate loans
ASSETS
Total loans and leases	5,755,239	5,764,529
Commercial loans and leases
ASSETS
Total loans and leases	2,416,904	2,399,668
Consumer loans
ASSETS
Total loans and leases	$ 1,482,943	$ 1,477,392

Unaudited Consolidated Balanc_2

Unaudited Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Premises and equipment, accumulated depreciation and amortization	$ 102,439	$ 100,408
Identified intangible assets, accumulated amortization	$ 11,488	$ 47,963
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	96,998,075	96,998,075
Treasury stock, shares (in shares)	7,354,399	7,354,399

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest and dividend income:
Loans and leases	$ 145,265	$ 121,931
Debt securities	6,878	7,870
Restricted equity securities	1,492	1,255
Short-term investments	1,824	1,495
Total interest and dividend income	155,459	132,551
Interest expense:
Deposits	56,884	29,368
Borrowed funds	16,987	17,134
Total interest expense	73,871	46,502
Net interest income	81,588	86,049
Provision for credit losses on loans	7,423	25,344
Provision (credit) for credit losses on investments	(44)	198
Net interest income after provision for credit losses	74,209	60,507
Non-interest income:
Loan level derivative income, net	437	2,373
Gain on investment securities, net	0	1,701
Gain on sales of loans and leases held-for-sale	0	1,638
Other	2,161	4,177
Total non-interest income	6,284	12,937
Non-interest expense:
Compensation and employee benefits	36,629	36,565
Occupancy	5,769	5,223
Equipment and data processing	7,031	6,462
Professional services	1,900	1,430
FDIC insurance	1,884	1,244
Advertising and marketing	1,574	1,410
Amortization of identified intangible assets	1,708	1,966
Merger and acquisition expense	0	6,409
Other	4,519	4,067
Total non-interest expense	61,014	64,776
Income before provision for income taxes	19,479	8,668
Provision for income taxes	4,814	1,108
Net income	$ 14,665	$ 7,560
Earnings per common share:
Basic (in dollars per share)	$ 0.16	$ 0.09
Diluted (in dollars per share)	$ 0.16	$ 0.09
Weighted average common shares outstanding during the year:
Basic (in shares)	88,894,577	86,563,641
Diluted (in shares)	89,181,508	86,837,806
Dividends paid per common share (in dollars per share)	$ 0.135	$ 0.135
Deposit fees
Non-interest income:
Non-interest income, fees	$ 2,897	$ 2,657
Loan fees
Non-interest income:
Non-interest income, fees	$ 789	$ 391

Unaudited Consolidated Statem_2

Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 14,665	$ 7,560
Investment securities available-for-sale:
Unrealized securities holding gains (losses)	(8,201)	10,140
Income tax (expense) benefit	1,924	(2,229)
Net unrealized securities holding gains (losses) before reclassification adjustments, net of taxes	(6,277)	7,911
Cash flow hedges:
Change in fair value of cash flow hedges	(3,375)	1,278
Income tax (expense) benefit	789	(332)
Net change in fair value of cash flow hedges, net of taxes	(2,586)	946
Less reclassification adjustment for change in fair value of cash flow hedges:
Gain (loss) on change in fair value of cash flow hedges	(1,102)	(543)
Income tax (expense) benefit	282	141
Net reclassification adjustment for change in fair value of cash flow hedges	(820)	(402)
Net change in fair value of cash flow hedges	(1,766)	1,348
Other comprehensive gain (loss), net of taxes	(8,043)	9,259
Comprehensive income	$ 6,622	$ 16,819

Unaudited Consolidated Statem_3

Unaudited Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2022	$ 992,125	$ 852	$ 736,074	$ 412,019	$ (61,947)	$ (94,873)
Increase (Decrease) in Stockholders' Equity
Net income	7,560			7,560
PCSB acquisition	167,642	118	167,524
Other comprehensive income (loss)	9,259				9,259
Common stock dividends	(11,970)			(11,970)
Restricted stock awards issued, net of awards surrendered	(53)		(8)			(45)
Compensation under recognition and retention plan	503		584	(81)
Ending balance at Mar. 31, 2023	1,165,066	970	904,174	407,528	(52,688)	(94,918)
Beginning balance at Dec. 31, 2023	1,198,644	970	902,659	438,722	(52,798)	(90,909)
Increase (Decrease) in Stockholders' Equity
Net income	14,665			14,665
PCSB acquisition		0
Other comprehensive income (loss)	(8,043)				(8,043)
Common stock dividends	(12,001)			(12,001)
Compensation under recognition and retention plan	966		1,067	(101)
Ending balance at Mar. 31, 2024	$ 1,194,231	$ 970	$ 903,726	$ 441,285	$ (60,841)	$ (90,909)

Unaudited Consolidated Statem_4

Unaudited Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Dividends per share (in dollars per share)	$ 0.135	$ 0.135

Unaudited Consolidated Statem_5

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Cash flows from operating activities:
Net income	$ 14,665	$ 7,560
Adjustments to reconcile net income to net cash provided from operating activities:
Provision for credit losses	7,379	25,542
Deferred income tax expense	(1,101)	(1,470)
Depreciation of premises and equipment	2,118	1,967
(Accretion) amortization of investment securities premiums and discounts, net	(1,693)	(2,473)
(Accretion) amortization of premiums and discounts and deferred loan and lease origination costs, net	(1,715)	1,063
Amortization of identified intangible assets	1,708	1,966
Amortization of debt issuance costs	25	25
Amortization (accretion) of acquisition fair value adjustments, net	484	(3,176)
Gain on investment securities, net	0	(1,701)
Gain on sales of loans and leases held-for-sale	0	(1,638)
Write-down of other repossessed assets	22	62
Compensation under recognition and retention plans	966	814
Net change in:
Cash surrender value of bank-owned life insurance	(489)	138
Other assets	(25,395)	6,787
Accrued expenses and other liabilities	11,866	(17,503)
Net cash provided from operating activities	8,840	17,963
Cash flows from investing activities:
Proceeds from sales of investment securities available-for-sale	0	224,832
Proceeds from maturities, calls, and principal repayments of investment securities available-for-sale	45,664	33,064
Purchases of investment securities available-for-sale	(1,369)	(274,440)
Proceeds from redemption/sales of restricted equity securities	6,866	16,198
Purchase of restricted equity securities	(3,980)	(27,119)
Proceeds from sales of loans and leases held-for-investment, net	0	128,942
Net increase in loans and leases	(27,734)	(430,373)
Acquisitions, net of cash and cash equivalents acquired	0	(80,209)
Purchase of premises and equipment, net	(2,002)	(3,774)
Proceeds from sales of other repossessed assets	309	89
Net cash provided from (used for) investing activities	17,754	(412,790)
Cash flows from financing activities:
Decrease in demand checking, NOW, savings and money market accounts	(14,403)	(383,919)
Increase in certificates of deposit and brokered deposits	184,603	750,542
Proceeds from FHLB advances	315,000	4,266,000
Repayment of FHLB advances	(388,189)	(4,098,408)
Increase (decrease) in other borrowed funds, net	58,249	(23,220)
Decrease in mortgagors' escrow accounts, net	(994)	(837)
Payment of dividends on common stock	(12,001)	(11,970)
Net cash provided from financing activities	142,265	498,188
Net increase in cash and cash equivalents	168,859	103,361
Cash and cash equivalents at beginning of period	133,027	382,959	$ 382,959
Cash and cash equivalents at end of period	301,886	486,320	$ 133,027
Cash paid during the period for:
Interest on deposits, borrowed funds and subordinated debt	67,233	43,785
Income taxes	547	2,511
Non-cash investing activities:
Transfer from loans and leases to loans held-for-sale	6,717	0
Transfer from loans to other repossessed assets	454	251
Acquisition of PCSB Financial Corporation:
Fair value of assets acquired, net of cash and cash equivalents acquired	0	1,931,528
Fair value of liabilities assumed	0	1,676,110
Common stock issued		167,642
Common Stock
Common stock issued	$ 0	$ 118

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Overview Brookline Bancorp, Inc. (the "Company") is a bank holding company (within the meaning of the Bank Holding Company Act of 1956, as amended) and the parent of Brookline Bank, a Massachusetts-chartered trust company; Bank Rhode Island ("BankRI"), a Rhode Island-chartered financial institution; and PCSB Bank, a New York-chartered commercial bank (collectively referred to as the "Banks"). The Banks are members of the Federal Reserve System. The Company is also the parent of Clarendon Private, LLC ("Clarendon Private"). The Company's primary business is to provide commercial, business and retail banking services to its corporate, municipal and retail customers through the Banks and its non-bank subsidiaries. Brookline Securities Corp., previously a subsidiary of the Company was dissolved in November 2023. Brookline Bank, which includes its wholly-owned subsidiaries, Longwood Securities Corp., Eastern Funding LLC ("Eastern Funding") and First Ipswich Insurance Agency, operates 29 full-service banking offices in the Greater Boston metropolitan area with three additional lending offices. BankRI, which includes its wholly-owned subsidiaries, Acorn Insurance Agency, BRI Realty Corp., BRI Investment Corp. and its wholly-owned subsidiary, BRI MSC Corp., operates 22 full-service banking offices in the greater Providence, Rhode Island area. PCSB Bank, which includes its wholly-owned subsidiary, UpCounty Realty Corp., operates 14 full-service banking offices in the Lower Hudson Valley of New York. Clarendon Private is a registered investment advisor with the Securities and Exchange Commission ("SEC"). Through Clarendon Private, the Company offers a wide range of wealth management services to individuals, families, endowments and foundations to help these clients meet their long-term financial goals. The Banks' activities include acceptance of commercial, municipal and retail deposits, origination of mortgage loans on commercial and residential real estate located principally in Central New England and the Lower Hudson Valley of New York State, origination of commercial loans and leases to small- and mid-sized businesses, investment in debt and equity securities, and the offering of cash management and investment advisory services. The Company also provides specialty equipment financing through it subsidiary Eastern Funding, which is based in New York City, New York, and Plainview, New York. The Company and the Banks are supervised, examined and regulated by the Board of Governors of the Federal Reserve System (the "FRB"). As a Massachusetts-chartered trust company, Brookline Bank is subject to supervision, examination and regulation by the Massachusetts Division of Banks. As a Rhode Island-chartered financial institution, BankRI is subject to supervision, examination and regulation by the Banking Division of the Rhode Island Department of Business Regulation. As a New York chartered commercial bank, PCSB Bank is subject to supervision, examination and regulation by the New York State Department of Financial Services. Clarendon Private is also subject to regulation by the SEC. The Federal Deposit Insurance Corporation ("FDIC") offers insurance coverage on all deposits up to $250,000 per depositor at each of the Banks. As FDIC-insured depository institutions, the Banks are also subject to supervision, examination and regulation by the FDIC. Basis of Financial Statement Presentation The unaudited consolidated financial statements of the Company presented herein have been prepared pursuant to the rules of the SEC for quarterly reports on Form 10-Q and do not include all of the information and note disclosures required by U.S. generally accepted accounting principles (“GAAP”). In the opinion of management, all adjustments (consisting of normal recurring adjustments) and disclosures considered necessary for the fair presentation of the accompanying consolidated financial statements have been included. Interim results are not necessarily reflective of the results of the entire year. The accompanying unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2023. The unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany transactions and balances are eliminated in consolidation. In preparing these consolidated financial statements, management is required to make significant estimates and assumptions that affect the reported amounts of assets, liabilities, income, expenses and disclosure of contingent assets and liabilities. Actual results could differ from those estimates based upon changing conditions, including economic conditions and future events. Material estimates that are particularly susceptible to significant changes in the near-term include the determination of the allowance for credit losses, the determination of fair market values of acquired assets and liabilities, including acquired loans, the review of goodwill and intangible assets for impairment and the review of deferred tax assets for valuation allowances. The judgments used by management in applying these critical accounting policies may be affected by a further and prolonged deterioration in the economic environment, which may result in changes to future financial results. For example, subsequent evaluations of the loan and lease portfolio, in light of the factors then prevailing, may result in significant changes in the allowance for loan and lease losses in future periods, and the inability to collect outstanding principal may result in increased loan and lease losses. Reclassification

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In March 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-04, "Reference Rate Reform (Topic 848)-Facilitation of the Effects of Reference Rate Reform on Financial Reporting" ("ASU 2020-04") to provide optional expedients and exceptions for applying GAAP to certain contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this update apply only to contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships existing as of December 31, 2022, for which an entity has elected certain optional expedients provided that those elections are retained through the end of the hedging relationship. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022 and do not apply to contract modifications made after December 31, 2022. In January 2021, the FASB issued ASU 2021-01, "Reference Rate Reform (Topic 848)" an update to address concerns around structural risk of interbank offered rates ("IBORs"), particularly, the risk of cessation of the LIBOR. The amendments in this update clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. In December 2022, FASB issued ASU 2022-06, "Reference Rate Reform (Topic 848)" which deferred the sunset date of Topic 848 to December 31, 2024, to allow for a transition period after the sunset of LIBOR. The Company has adopted the amendments in these updates and established a LIBOR transition committee to guide the Company’s transition from LIBOR. The Company has completed much of the work to transition off the LIBOR index consistent with industry timelines. The working group has identified its products that utilize LIBOR and has implemented fallback language to facilitate the transition to alternative rates. The Company has also evaluated its infrastructure and identified fallback rates as well as started offering alternative indices and new products tied to these alternative indices. The Company does not anticipate the adoption of these standards to have a material impact to the consolidated financial statements.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following tables set forth investment securities available-for-sale at the dates indicated: At March 31, 2024 Amortized Gross Gross Estimated (In Thousands) Investment securities available-for-sale: GSE debentures $ 215,358 $ 177 $ 21,201 $ 194,334 GSE CMOs 65,582 — 5,766 59,816 GSE MBSs 180,852 41 18,869 162,024 Municipal obligations 19,033 132 125 19,040 Corporate debt obligations 18,551 66 843 17,774 U.S. Treasury bonds 441,774 13 29,466 412,321 Foreign government obligations 500 — 11 489 Total investment securities available-for-sale $ 941,650 $ 429 $ 76,281 $ 865,798 December 31, 2023 Amortized Gross Gross Estimated (In Thousands) Investment securities available-for-sale: GSE debentures $ 220,604 $ 517 $ 19,994 $ 201,127 GSE CMOs 66,463 33 4,879 61,617 GSE MBSs 186,614 62 16,679 169,997 Municipal obligations 18,785 184 47 18,922 Corporate debt obligations 20,521 82 887 19,716 U.S. Treasury bonds 470,764 423 26,450 444,737 Foreign government obligations 500 — 15 485 Total investment securities available-for-sale $ 984,251 $ 1,301 $ 68,951 $ 916,601 As of March 31, 2024, the fair value of all investment securities available-for-sale was $865.8 million, with net unrealized losses of $75.9 million, compared to a fair value of $916.6 million and net unrealized losses of $67.7 million as of December 31, 2023. As of March 31, 2024, $788.6 million, or 91.1% of the portfolio, had gross unrealized losses of $76.3 million, compared to $717.2 million, or 77.8% of the portfolio, with gross unrealized losses of $69.0 million as of December 31, 2023. As of March 31, 2024 and December 31, 2023, the Company held no securities as held to maturity; all securities were held as available-for-sale. Investment Securities as Collateral As of March 31, 2024 and December 31, 2023, respectively, $743.2 million and $791.2 million of investment securities were pledged as collateral for repurchase agreements; municipal deposits; treasury, tax and loan deposits; swap agreements; FRB borrowings; and FHLB borrowings. The Banks had no outstanding FRB borrowings as of March 31, 2024 and December 31, 2023. Allowance for Credit Losses-Available-for-Sale Securities For available-for-sale securities in an unrealized loss position, management first assesses whether (i) the Company intends to sell the security, or (ii) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis. If either criterion is met, any previously recognized allowances are charged-off and the security's amortized cost is written down to fair value through income. If neither criterion is met, the security is evaluated to determine whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and any adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, an allowance for credit loss is recorded, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through the Allowance for Credit Losses ("ACL") is recognized in other comprehensive income. Adjustments to the allowance are reported as a component of credit loss expense. Available-for-sale securities are charged-off against the allowance or, in the absence of any allowance, written down through income when deemed uncollectible or when either of the aforementioned criteria regarding intent or requirement to sell is met. The Company has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Accrued interest receivables associated with debt securities available-for-sale totaled $4.1 million as of March 31, 2024 and December 31, 2023. A debt security is placed on nonaccrual status at the time any principal or interest payments become more than 90 days delinquent or if full collection of interest or principal becomes uncertain. Accrued interest for a debt security placed on nonaccrual is reversed against interest income. There were no debt securities on nonaccrual status and therefore there was no accrued interest related to debt securities reversed against interest income for the three months ended March 31, 2024 and 2023. Assessment for Available for Sale Securities for Impairment Investment securities as of March 31, 2024 and December 31, 2023 that have been in a continuous unrealized loss position for less than twelve months or twelve months or longer are as follows: At March 31, 2024 Less than Twelve Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (In Thousands) Investment securities available-for-sale: GSE debentures $ 56,155 $ 525 $ 121,197 $ 20,676 $ 177,352 $ 21,201 GSE CMOs 11,137 464 48,679 5,302 59,816 5,766 GSE MBSs 22,198 479 136,520 18,390 158,718 18,869 Municipal obligations 403 4 3,672 121 4,075 125 Corporate debt obligations — — 15,406 843 15,406 843 U.S. Treasury bonds 108,974 1,047 263,749 28,419 372,723 29,466 Foreign government obligations — — 489 11 489 11 Temporarily impaired investment securities available-for-sale 198,867 2,519 589,712 73,762 788,579 76,281 Total temporarily impaired investment securities $ 198,867 $ 2,519 $ 589,712 $ 73,762 $ 788,579 $ 76,281 At December 31, 2023 Less than Twelve Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (In Thousands) Investment securities available-for-sale: GSE debentures $ 10,964 $ 12 $ 121,993 $ 19,982 $ 132,957 $ 19,994 GSE CMOs 42,057 3,547 14,571 1,332 56,628 4,879 GSE MBSs 34,317 561 122,367 16,118 156,684 16,679 Municipal obligations 3,859 47 — — 3,859 47 Corporate debt obligations 10,911 810 6,427 77 17,338 887 U.S. Treasury bonds 117,132 676 232,074 25,774 349,206 26,450 Foreign government obligations — — 485 15 485 15 Temporarily impaired investment securities available-for-sale 219,240 5,653 497,917 63,298 717,157 68,951 Total temporarily impaired investment securities $ 219,240 $ 5,653 $ 497,917 $ 63,298 $ 717,157 $ 68,951 The Company performs regular analyses of the investment securities available-for-sale portfolio to determine whether a decline in fair value indicates that an investment security is impaired. In making these impairment determinations, management considers, among other factors, projected future cash flows; credit subordination and the creditworthiness; capital adequacy and near-term prospects of the issuers. Management also considers the Company's capital adequacy, interest-rate risk, liquidity and business plans in assessing whether it is more likely than not that the Company will sell or be required to sell the investment securities before recovery. If the Company determines that a security investment is impaired and that it is more likely than not that the Company will not sell or be required to sell the investment security before recovery of its amortized cost, the credit portion of the impairment loss is recognized in the Company's consolidated statement of income and the noncredit portion is recognized in accumulated other comprehensive income. The credit portion of the impairment represents the difference between the amortized cost and the present value of the expected future cash flows of the investment security. If the Company determines that a security is impaired and it is more likely than not that it will sell or be required to sell the investment security before recovery of its amortized cost, the entire difference between the amortized cost and the fair value of the security will be recognized in the Company's consolidated statement of income. Investment Securities Available-For-Sale Impairment Analysis The following discussion summarizes, by investment security type, the basis for evaluating if the applicable investment securities within the Company’s available-for-sale portfolio were impaired as of March 31, 2024. The Company has determined it is more likely than not that the Company will not sell or be required to sell the investment securities before recovery of its amortized cost. The Company's ability and intent to hold these investment securities until recovery is supported by the Company's strong capital and liquidity positions as well as its historically low portfolio turnover. As such, management has determined that the investment securities are not impaired as of March 31, 2024. If market conditions for investment securities worsen or the creditworthiness of the underlying issuers deteriorates, it is possible that the Company may recognize additional impairment in future periods. U.S. Government-Sponsored Enterprises The Company invests in securities issued by U.S. Government-sponsored enterprises ("GSEs"), including GSE debentures, mortgage-backed securities ("MBSs"), and collateralized mortgage obligations ("CMOs"). GSE securities include obligations issued by the Federal National Mortgage Association ("FNMA"), the Federal Home Loan Mortgage Corporation ("FHLMC"), the Government National Mortgage Association ("GNMA"), the FHLB and the Federal Farm Credit Bank. As of March 31, 2024, the Company held GNMA MBSs and CMOs, and Small Business Administration ("SBA") commercial loan asset-backed securities in its available-for-sale portfolio with an estimated fair value of $38.4 million, all of which were backed explicitly by the full faith and credit of the U.S. Government, compared to $33.9 million as of December 31, 2023. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA/SBA) guarantee of the U.S. Government. Therefore, despite unrealized losses in some of the securities within the portfolio, management determined that the investment securities are not impaired. See discussion on the portfolio below. As of March 31, 2024, the Company owned 40 GSE debentures with a total fair value of $194.3 million, and a net unrealized loss of $21.0 million. As of December 31, 2023, the Company held 43 GSE debentures with a total fair value of $201.1 million, with a net unrealized loss of $19.5 million. As of March 31, 2024, 36 of the 40 securities in this portfolio were in an unrealized loss position. As of December 31, 2023, 27 of the 43 securities in this portfolio were in an unrealized loss position. During the three months ended March 31, 2024 and 2023, the Company did not purchase any GSE debentures. As of March 31, 2024, the Company owned 60 GSE CMOs with a total fair value of $59.8 million and a net unrealized loss of $5.8 million. As of December 31, 2023, the Company held 60 GSE CMOs with a total fair value of $61.6 million with a net unrealized loss of $4.8 million. As of March 31, 2024, all of the securities in this portfolio were in an unrealized loss position. As of December 31, 2023, 57 of the 60 securities in this portfolio were in an unrealized loss position. During the three months ended March 31, 2024 and 2023, the Company did not purchase any GSE CMOs. As of March 31, 2024, the Company owned 146 GSE MBSs with a total fair value of $162.0 million and a net unrealized loss of $18.8 million. As of December 31, 2023, the Company held 146 GSE MBSs with a total fair value of $170.0 million with a net unrealized loss of $16.6 million. As of March 31, 2024, 129 of the 146 securities in this portfolio were in an unrealized loss position. As of December 31, 2023, 125 of the 146 securities in this portfolio were in an unrealized loss position. During the three months ended March 31, 2024 the Company did not purchase any GSE MBSs compared to the same period in 2023 when the Company purchased $39.4 million of GSE MBSs. Municipal Obligations The Company invests in certain state and municipal securities with high credit ratings for portfolio diversification and tax planning purposes. Full collection of the obligations is expected because the financial condition of the issuing municipalities is sound, they have not defaulted on scheduled payments, the obligations are rated investment grade, and the Company has the ability and intent to hold the obligations for a period of time to recover the amortized cost. As of March 31, 2024, the Company owned 44 municipal obligation securities with a total fair value of $19.0 million which approximated cost. As of December 31, 2023, the Company owned 44 municipal obligation securities with a total fair value of $18.9 million and a net unrealized gain of $0.1 million. As of March 31, 2024, 10 of the 44 securities in this portfolio were in an unrealized loss position. As of December 31, 2023, 6 of the 44 securities in this portfolio were in an unrealized loss position. During the three months ended March 31, 2024, the Company purchased $1.4 million of municipal securities compared to the same period in 2023 when the Company purchased $1.1 million of municipal securities. Corporate Obligations The Company may invest in high-quality corporate obligations to provide portfolio diversification and improve the overall yield on the portfolio. Full collection of the obligations is expected because the financial condition of the issuers is sound, they have not defaulted on scheduled payments, the obligations are rated investment grade, and the Company has the ability and intent to hold the obligations for a period of time to recover the amortized cost. As of March 31, 2024, the Company held 10 corporate obligation securities with a total fair value of $17.8 million and a net unrealized loss of $0.8 million. As of December 31, 2023, the Company held 11 corporate obligation securities with a total fair value of $19.7 million and a net unrealized loss of $0.8 million. As of March 31, 2024, 5 of the 10 securities in this portfolio were in an unrealized loss position. As of December 31, 2023, 9 of the 11 securities in this portfolio were in an unrealized loss position. During the three months ended March 31, 2024 and 2023, the Company did not purchase any corporate obligations. U.S. Treasury Bonds All securities are performing and backed by the implicit guarantee of the U.S. Government. Therefore, despite unrealized losses in some of the securities within the portfolio, management determined that the investment securities are not impaired. See discussion on the portfolio below. The Company invests in securities issued by the U.S. government. As of March 31, 2024, the Company owned 62 U.S. Treasury bonds with a total fair value of $412.3 million and a net unrealized loss of $29.5 million. As of December 31, 2023, the Company held 66 U.S. Treasury bonds with a total fair value of $444.7 million and a net unrealized loss of $26.0 million. As of March 31, 2024, 56 of the 62 securities in this portfolio were in an unrealized loss position. As of December 31, 2023, 53 of the 66 securities in this portfolio were in an unrealized loss position. During the three months ended March 31, 2024, the Company did not purchased any U.S. Treasury bonds, compared to the same period in 2023 when the Company purchased $234.0 million U.S. Treasury bonds. Foreign Government Obligations As of March 31, 2024 and December 31, 2023, the Company owned 1 foreign government obligation security with a fair value of $0.5 million, which approximated cost. As of March 31, 2024 and December 31, 2023, respectively, the security was in an unrealized loss position. During the three months ended March 31, 2024 and 2023, the Company did not purchase any foreign government obligation. Portfolio Maturities The final stated maturities of the debt securities are as follows for the periods indicated: At March 31, 2024 At December 31, 2023 Amortized Estimated Weighted Amortized Estimated Weighted (Dollars in Thousands) Investment securities available-for-sale: Within 1 year $ 124,153 $ 123,534 4.07 % $ 141,989 $ 141,340 4.27 % After 1 year through 5 years 339,194 325,338 3.06 % 342,525 332,734 3.15 % After 5 years through 10 years 251,347 215,200 1.66 % 268,182 233,059 1.69 % Over 10 years 226,956 201,726 3.31 % 231,555 209,468 3.35 % $ 941,650 $ 865,798 2.91 % $ 984,251 $ 916,601 3.00 % Actual maturities of debt securities will differ from those presented above since certain obligations amortize and may also provide the issuer the right to call or prepay the obligation prior to scheduled maturity without penalty. MBSs and CMOs are included above based on their final stated maturities; the actual maturities, however, may occur earlier due to anticipated prepayments and stated amortization of cash flows. As of March 31, 2024, issuers of debt securities with an estimated fair value of $121.2 million had the right to call or prepay the obligations. Of the $121.2 million, approximately $6.5 million matures in less then 1 year, $59.3 million matures in 1-5 years, $47.6 million matures in 6-10 years, and $7.8 million matures after ten years. As of December 31, 2023, issuers of debt securities with an estimated fair value of approximately $122.0 million had the right to call or prepay the obligations. Of the $122.0 million, approximately $6.4 million matures in less then 1 year, $59.7 million matures in 1-5 years, $48.0 million matures in 6-10 years, and $7.9 million matures after ten years. Security Sales The Company did not sell any investment securities available-for-sale during the three months ended March 31, 2024, compared to the three months ended March 31, 2023 where the proceeds from the sale of investment securities available-for-sale were $224.8 million. Securities sales executed during the three months ended 2023 were related to the acquisition of PCSB and the restructuring of the acquired investment portfolio. Three Months Ended March 31, 2024 2023 (In Thousands) Investment securities available-for-sale: Proceeds from sales: $ — $ 224,832 Gross gains from sales — 2,702 Gross losses from sales — (1,001) Gain on sales of securities, net $ — $ 1,701

Loans and Leases

Loans and Leases	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Loans and Leases	Loans and Leases The following table presents the amortized cost of loans and leases and weighted average coupon rates for the loan and lease portfolios at the dates indicated: At March 31, 2024 At December 31, 2023 Balance Weighted Balance Weighted (Dollars In Thousands) Commercial real estate loans: Commercial real estate $ 3,994,766 5.48 % $ 4,047,288 5.47 % Multi-family mortgage 1,421,183 5.15 % 1,415,191 5.14 % Construction 339,290 7.01 % 302,050 6.86 % Total commercial real estate loans 5,755,239 5.49 % 5,764,529 5.46 % Commercial loans and leases: Commercial 999,613 6.84 % 984,441 6.83 % Equipment financing 1,374,546 7.90 % 1,370,648 7.76 % Condominium association 42,745 5.02 % 44,579 5.05 % Total commercial loans and leases 2,416,904 7.41 % 2,399,668 7.33 % Consumer loans: Residential mortgage 1,086,574 4.44 % 1,082,804 4.41 % Home equity 347,885 8.04 % 344,182 8.03 % Other consumer 48,484 7.67 % 50,406 7.68 % Total consumer loans 1,482,943 5.39 % 1,477,392 5.36 % Total loans and leases $ 9,655,086 5.95 % $ 9,641,589 5.91 % Accrued interest on loans and leases, which were excluded from the amortized cost of loans and leases totaled $40.8 million and $39.1 million at March 31, 2024 and December 31, 2023, respectively, and were included in other assets in the accompanying consolidated balance sheets. The net unamortized deferred loan origination costs and premiums and discounts on acquired loans included in total loans and leases were $(26.5) million and $(29.0) million as of March 31, 2024 and December 31, 2023, respectively. The Banks and their subsidiaries lend primarily in all New England states and New York, with the exception of the equipment financing portfolio, 29.2% of which is in the Greater New York and New Jersey metropolitan area and 70.8% of which is in other areas in the United States of America as of March 31, 2024. Loans and Leases Pledged as Collateral As of March 31, 2024 and December 31, 2023, there were $3.4 billion and $3.5 billion respectively of loans and leases pledged as collateral for repurchase agreements; municipal deposits; treasury, tax and loan deposits; swap agreements; FRB borrowings; and FHLB borrowings. The Banks did not have any outstanding FRB borrowings as of March 31, 2024 and December 31, 2023.

Allowance for Credit Losses

Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses The following tables present the changes in the allowance for loan and lease losses in loans and leases by portfolio segment for the periods indicated: Three Months Ended March 31, 2024 Commercial Commercial Consumer Total (In Thousands) Balance at December 31, 2023 $ 81,410 $ 29,557 $ 6,555 $ 117,522 Charge-offs (606) (4,771) (13) (5,390) Recoveries — 292 17 309 Provision (credit) for loan and lease losses excluding unfunded commitments 2,671 5,339 (327) 7,683 Balance at March 31, 2024 $ 83,475 $ 30,417 $ 6,232 $ 120,124 Three Months Ended March 31, 2023 Commercial Commercial Consumer Total (In Thousands) Balance at December 31, 2022 $ 68,154 $ 26,604 $ 3,724 $ 98,482 Charge-offs — (840) (11) (851) Recoveries 6 383 11 400 Provision (credit) for loan and lease losses excluding unfunded commitments 14,532 6,614 1,688 22,834 Balance at March 31, 2023 $ 82,692 $ 32,761 $ 5,412 $ 120,865 The allowance for credit losses for unfunded credit commitments, which is included in other liabilities, was $15.8 million, and $19.8 million at March 31, 2024 and December 31, 2023, respectively. In addition, there were $3.7 million in unfunded commitment related charge-offs in the first quarter of 2024. Provision for Credit Losses The provision (credit) for credit losses are set forth below for the periods indicated: Three Months Ended March 31, 2024 2023 (In Thousands) Provision (credit) for loan and lease losses: Commercial real estate $ 2,671 $ 14,532 Commercial 5,339 6,614 Consumer (327) 1,688 Total (credit) provision for loan and lease losses 7,683 22,834 Unfunded commitments (260) 2,510 Investment securities available-for-sale (44) 198 Total provision (credit) for credit losses $ 7,379 $ 25,542 Allowance for Loan and Lease Losses Methodology Management has established a methodology to determine the adequacy of the allowance for credit losses that assesses the risks and losses expected on the loan and lease portfolio and unfunded commitments. Additions to the allowance for credit losses are made by charges to the provision for credit losses. Losses on loans and leases are charged off against the allowance when all or a portion of a loan or lease is considered uncollectible. Subsequent recoveries on loans previously charged off, if any, are credited to the allowance when realized. To calculate the allowance for loans collectively evaluated, management uses models developed by a third party. Commercial real estate ("CRE"), commercial and industrial ("C&I"), and retail lifetime loss rate models calculate the expected losses over the life of the loan based on exposure at default loan attributes and reasonable, supportable economic forecasts. The exposure at default considers the current unpaid balance, prepayment assumptions and expected utilization assumptions. The expected loss estimates for two small commercial portfolios are based on historical loss rates. Key assumptions used in the models include portfolio segmentation, prepayments, and the expected utilization of unfunded commitments, among others. The portfolios are segmented by loan level attributes such as loan type, loan size, date of origination, and delinquency status to create homogenous loan pools. Pool level metrics are calculated and loss rates are subsequently applied to the pools as the loans have like characteristics. Prepayment assumptions are embedded within the models and are based on the same data used for model development and incorporate adjustments for reasonable and supportable forecasts. Model development data and developmental time periods vary by model, but all use at least ten years of historical data and capture at least one recessionary period. Expected utilization is based on current utilization and a loan equivalency ("LEQ") factor. LEQ varies by current utilization and provides a reasonable estimate of expected draws and borrower behavior. Assumptions and model inputs are reviewed in accordance with model monitoring practices and as information becomes available . The ACL estimate incorporates reasonable and supportable forecasts of various macro-economic variables over the remaining life of loans and leases. The development of the reasonable and supportable forecast assume each macro-economic variable will revert to long-term expectations, with reversion characteristics unique to specific economic indicators and forecasts. Reversion towards long-term expectations generally begins two Management elected to use multiple economic forecasts in determining the reserve to account for economic uncertainty. The forecasts include various projections of gross domestic product, interest rates, property price indices, and employment measures. Scenario weighting and model parameters are reviewed for each calculation and updated to reflect facts and circumstances as of the financial statement date. The forecasts utilized at March 31, 2024 reflect the immediate and longer-term effects of a higher interest rate environment and inflationary conditions compared to recent history. As of March 31, 2024, management applied qualitative adjustments to the CRE lifetime loss rate, C&I lifetime loss rate, and Retail lifetime loss rate models. These adjustments addressed model limitations, were based on historical loss patterns, and targeted specific risks within the certain portfolios. A general qualitative adjustment was applied to all models to account for general economic uncertainty by placing a greater probability on negative economic forecasts. Additional qualitative adjustments were applied to the commercial, multifamily, and commercial real estate (includes owner occupied, non-owner occupied, and construction) portfolios based on the Company’s historical loss experience and the loss experience of the Company’s peer group. These qualitative adjustments resulted in additions to reserves for all portfolios, as compared to the model output. Specific reserves are established for loans individually evaluated for impairment when amortized cost basis is greater than the discounted present value of expected future cash flows or, in the case of collateral-dependent loans, when there is an excess of a loan's amortized cost basis over the fair value of its underlying collateral. When loans and leases do not share risk characteristics with other financial assets they are evaluated individually. Individually evaluated loans are reviewed quarterly with adjustments made to the calculated reserve as necessary. The general allowance for loan and lease losses was $110.2 million as of March 31, 2024, compared to $108.4 million as of December 31, 2023. The increase in the general allowance was primarily driven by the latest economic forecast of the commercial real estate market. The specific allowance for loan and lease losses was $10.0 million as of March 31, 2024, compared to $9.1 million as of December 31, 2023. The specific allowance increased $0.9 million during the three months ended March 31, 2024 primarily due to specific reserve increases totaling $1.3 million for commercial loans, offset by decreases totaling $0.4 million for commercial real estate loans. As of March 31, 2024, management believes that the methodology for calculating the allowance is sound and that the allowance provides a reasonable basis for determining and reporting on expected losses over the lifetime of the Company’s loan portfolios. Credit Quality Assessment At the time of loan origination, a rating is assigned based on the capacity to pay and general financial strength of the borrower, the value of assets pledged as collateral, and the evaluation of third party support such as a guarantor. The Company continually monitors the credit quality of the loan portfolio using all available information. The officer responsible for handling each loan is required to initiate changes to risk ratings when changes in facts and circumstances occur that warrant an upgrade or downgrade in a loan rating. Based on this information, loans demonstrating certain payment issues or other weaknesses may be categorized as delinquent, adversely risk-rated, nonperforming and/or put on nonaccrual status. Additionally, in the course of resolving such loans, the Company may choose to restructure the contractual terms of certain loans to match the borrower's ability to repay the loan based on their current financial condition. If a restructured loan meets certain criteria, it may be categorized as a modified loan. The Company reviews numerous credit quality indicators when assessing the risk in its loan portfolio. For all loans, the Company utilizes an eight-grade loan rating system, which assigns a risk rating to each borrower based on a number of quantitative and qualitative factors associated with a 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. In addition, the Company's independent loan review group evaluates the credit quality and related risk ratings in all loan portfolios. The results of these reviews are reported to the Risk Committee of the Board of Directors on a periodic basis and annually to the Board of Directors. For the consumer loans, the Company heavily relies on payment status for calibrating credit risk. The ratings categories used for assessing credit risk in the commercial real estate, multi-family mortgage, construction, commercial, equipment financing, condominium association and other consumer loan and lease classes are defined as follows: 1 -4 Rating—Pass Loan rating grades "1" through "4" are classified as "Pass," which indicates borrowers are performing in accordance with the terms of the loan and are less likely to result in loss due to the capacity of the borrower to pay and the adequacy of the value of assets pledged as collateral. 5 Rating—Other Assets Especially Mentioned ("OAEM") Borrowers exhibit potential credit weaknesses or downward trends deserving management's 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. 6 Rating—Substandard Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt. Substandard loans may be inadequately protected by the current net worth and paying capacity of the obligors or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy. Although no immediate loss of principal is envisioned, 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. 7 Rating—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. 8 Rating—Definite 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. Assets rated as "OAEM," "substandard" or "doubtful" based on criteria established under banking regulations are collectively referred to as "criticized" assets. Credit Quality Information The following table presents the amortized cost basis of loans in each class by credit quality indicator and year of origination as of March 31, 2024. March 31, 2024 2024 2023 2022 2021 2020 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Commercial Real Estate Pass $ 12,483 $ 377,205 $ 679,682 $ 774,582 $ 375,384 $ 1,635,333 $ 65,395 $ 14,869 $ 3,934,933 OAEM — — 3,704 2,511 3,278 11,730 — — 21,223 Substandard — — 611 — — 37,999 — — 38,610 Total 12,483 377,205 683,997 777,093 378,662 1,685,062 65,395 14,869 3,994,766 Current-period gross writeoffs — — — — — 606 — — 606 Multi-Family Mortgage Pass 24,385 73,124 218,968 258,456 163,949 637,634 5,903 36,568 1,418,987 Substandard — — — — — 2,196 — — 2,196 Total 24,385 73,124 218,968 258,456 163,949 639,830 5,903 36,568 1,421,183 Construction Pass 2,769 26,495 240,015 34,230 6,313 235 7,558 — 317,615 OAEM — — 7,781 — — — — — 7,781 Substandard — — 2,417 11,477 — — — — 13,894 March 31, 2024 2024 2023 2022 2021 2020 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Total 2,769 26,495 250,213 45,707 6,313 235 7,558 — 339,290 Commercial Pass 16,057 230,158 129,135 121,279 35,412 92,575 343,898 4,999 973,513 OAEM — — — 72 1,838 — 7,020 — 8,930 Substandard — 4 — 8 110 12,564 1,972 575 15,233 Doubtful — — — — — 2 — 1,935 1,937 Total 16,057 230,162 129,135 121,359 37,360 105,141 352,890 7,509 999,613 Current-period gross writeoffs — — 1,000 3,700 — 15 — — 4,715 Equipment Financing Pass 89,534 425,237 366,186 189,506 114,358 142,080 1,412 5,563 1,333,876 OAEM — 4,480 2,677 2,345 1,213 275 11,530 — 22,520 Substandard — 1,449 8,522 3,702 1,359 3,103 — — 18,135 Doubtful — — — — — 15 — — 15 Total 89,534 431,166 377,385 195,553 116,930 145,473 12,942 5,563 1,374,546 Current-period gross writeoffs — 546 1,141 469 576 1,024 — — 3,756 Condominium Association Pass 404 4,567 7,347 9,475 6,426 12,020 2,354 152 42,745 Total 404 4,567 7,347 9,475 6,426 12,020 2,354 152 42,745 Other Consumer Pass 100 349 155 402 3 2,081 45,392 2 48,484 Total 100 349 155 402 3 2,081 45,392 2 48,484 Current-period gross writeoffs 6 — — — — 6 — — 12 Total Pass 145,732 1,137,135 1,641,488 1,387,930 701,845 2,521,958 471,912 62,153 8,070,153 OAEM — 4,480 14,162 4,928 6,329 12,005 18,550 — 60,454 Substandard — 1,453 11,550 15,187 1,469 55,862 1,972 575 88,068 Doubtful — — — — — 17 — 1,935 1,952 Total $ 145,732 $ 1,143,068 $ 1,667,200 $ 1,408,045 $ 709,643 $ 2,589,842 $ 492,434 $ 64,663 $ 8,220,627 As of March 31, 2024, there were no loans categorized as definite loss. For residential mortgage and home equity loans, the borrowers' credit scores contribute as a reserve metric in the retail loss rate model. At March 31, 2024 2024 2023 2022 2021 2020 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Residential Credit Scores Over 700 $ 15,975 $ 72,334 $ 159,670 $ 214,374 $ 118,406 $ 340,471 $ 4,153 $ 437 $ 925,820 661 - 700 894 8,437 18,125 9,168 5,306 27,552 — — 69,482 600 and below — 4,562 11,919 7,310 7,694 26,337 — — 57,822 Data not available * — 1,549 1,937 6,878 — 23,086 — — 33,450 Total $ 16,869 $ 86,882 $ 191,651 $ 237,730 $ 131,406 $ 417,446 $ 4,153 $ 437 $ 1,086,574 Home Equity Credit Scores Over 700 $ 971 $ 5,419 $ 3,875 $ 1,633 $ 758 $ 8,224 $ 278,942 $ 4,298 $ 304,120 661 - 700 91 747 156 — — 529 20,082 616 22,221 600 and below 100 146 140 40 — 348 16,138 2,562 19,474 Data not available * — 22 — 1 — 44 1,855 148 2,070 Total $ 1,162 $ 6,334 $ 4,171 $ 1,674 $ 758 $ 9,145 $ 317,017 $ 7,624 $ 347,885 _______________________________________________________________________________ * Primarily represents loans made to trusts and purchased mortgages. The following tables present the recorded investment in loans in each class as of December 31, 2023, by credit quality indicator. December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Commercial Real Estate Pass $ 386,962 $ 690,374 $ 776,834 $ 378,322 $ 422,028 $ 1,245,148 $ 75,746 $ 14,882 $ 3,990,296 OAEM — — 2,529 3,300 1,784 1,674 — — 9,287 Substandard — — — — 22,685 23,089 — — 45,774 Doubtful — — — — — 1,931 — — 1,931 Total 386,962 690,374 779,363 381,622 446,497 1,271,842 75,746 14,882 4,047,288 Current -period gross writeoffs — 4 942 — — 258 — — 1,204 December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Multi-Family Mortgage Pass 68,963 217,727 256,198 165,770 193,162 468,623 5,947 36,585 1,412,975 Substandard — — — — — 2,216 — — 2,216 Total 68,963 217,727 256,198 165,770 193,162 470,839 5,947 36,585 1,415,191 Construction Pass 25,691 212,904 36,192 6,292 1,176 239 5,984 — 288,478 Substandard — 2,417 11,155 — — — — — 13,572 Total 25,691 215,321 47,347 6,292 1,176 239 5,984 — 302,050 Commercial Pass 220,563 137,332 125,385 37,601 23,046 69,104 337,316 3,570 953,917 OAEM — — 79 2,081 1,291 — 1,827 8,225 13,503 Substandard 4 — 9 — 12,362 273 981 3,388 17,017 Doubtful — — — — 1 1 — 2 4 Total 220,567 137,332 125,473 39,682 36,700 69,378 340,124 15,185 984,441 Current-period gross writeoffs 1,000 3,500 4,842 1,164 673 2,379 — — 13,558 Equipment Financing Pass 443,878 389,083 205,208 125,888 88,465 74,727 12,919 5,740 1,345,908 OAEM — 2,144 1,232 1,033 159 — — — 4,568 Substandard 1,250 8,107 4,105 2,181 2,255 2,259 — — 20,157 Doubtful — — — — — 15 — — 15 Total 445,128 399,334 210,545 129,102 90,879 77,001 12,919 5,740 1,370,648 Current-period gross writeoffs 498 1,075 1,915 122 553 2,275 — — 6,438 Condominium Association Pass 4,460 7,569 9,186 6,686 4,414 9,086 3,010 168 44,579 Total 4,460 7,569 9,186 6,686 4,414 9,086 3,010 168 44,579 Other Consumer Pass 408 200 516 5 21 2,062 47,191 3 50,406 Total 408 200 516 5 21 2,062 47,191 3 50,406 Current-period gross writeoffs 6 — 2 — 11 9 — — 28 Total Pass 1,150,925 1,655,189 1,409,519 720,564 732,312 1,868,989 488,113 60,948 8,086,559 OAEM — 2,144 3,840 6,414 3,234 1,674 1,827 8,225 27,358 Substandard 1,254 10,524 15,269 2,181 37,302 27,837 981 3,388 98,736 December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Doubtful — — — — 1 1,947 — 2 1,950 Total $ 1,152,179 $ 1,667,857 $ 1,428,628 $ 729,159 $ 772,849 $ 1,900,447 $ 490,921 $ 72,563 $ 8,214,603 As of December 31, 2023, there were no loans categorized as definite loss. At December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Residential Credit Scores Over 700 $ 72,022 $ 161,491 $ 210,338 $ 118,752 $ 84,792 $ 261,474 $ 4,998 $ 439 $ 914,306 661 - 700 12,200 20,824 11,059 7,970 4,402 24,152 — — 80,607 600 and below 1,943 12,108 7,197 7,093 5,449 23,838 — — 57,628 Data not available * 1,353 2,246 3,025 — 448 23,163 28 — 30,263 Total $ 87,518 $ 196,669 $ 231,619 $ 133,815 $95,091 $ 332,627 $ 5,026 $ 439 $ 1,082,804 Current-period gross writeoffs — — — — — 25 — — 25 Home Equity Credit Scores Over 700 $ 5,505 $ 3,807 $ 1,667 $ 769 $ 1,218 $ 7,366 $ 272,169 $ 4,617 $ 297,118 661 - 700 1,005 310 — 36 — 671 21,936 830 24,788 600 and below 148 143 41 — 39 402 17,349 2,008 20,130 Data not available * 23 — 1 — — 45 2,062 15 2,146 Total $ 6,681 $ 4,260 $ 1,709 $ 805 $ 1,257 $ 8,484 $ 313,516 $ 7,470 $ 344,182 _______________________________________________________________________________ * Primarily represents loans made to trusts and purchased mortgages. Age Analysis of Past Due Loans and Leases The following table presents an age analysis of the amortized cost basis in loans and leases as of March 31, 2024. At March 31, 2024 Past Due Past 31-60 61-90 Greater Total Current Total Loans Non-accrual Non-accrual (In Thousands) Commercial real estate loans: Commercial real estate $ 480 $ 1,928 $ 14,932 $ 17,340 $ 3,977,426 $ 3,994,766 $ 175 $ 18,394 $ (629) Multi-family mortgage — — — — 1,421,183 1,421,183 — — — Construction — 2,418 — 2,418 336,872 339,290 — — — Total commercial real estate loans 480 4,346 14,932 19,758 5,735,481 5,755,239 175 18,394 (629) Commercial loans and leases: Commercial 879 639 3,049 4,567 995,046 999,613 36 3,096 — Equipment financing 20,656 4,378 7,353 32,387 1,342,159 1,374,546 150 13,668 2,152 Condominium association — — — — 42,745 42,745 — — — Total commercial loans and leases 21,535 5,017 10,402 36,954 2,379,950 2,416,904 186 16,764 2,152 Consumer loans: Residential mortgage 1,465 131 2,628 4,224 1,082,350 1,086,574 — 4,563 2,752 Home equity 1,399 254 450 2,103 345,782 347,885 2 950 — Other consumer 1 — — 1 48,483 48,484 — 1 — Total consumer loans 2,865 385 3,078 6,328 1,476,615 1,482,943 2 5,514 2,752 Total loans and leases $ 24,880 $ 9,748 $ 28,412 $ 63,040 $ 9,592,046 $ 9,655,086 $ 363 $ 40,672 $ 4,275 The Company did not recognize any interest income on nonaccrual loans for the three months ended March 31, 2024. The following tables present an age analysis of the recorded investment in originated and acquired loans and leases as of December 31, 2023. At December 31, 2023 Past Due Loans and Non-accrual 31-60 61-90 Greater Total Current Total Loans Non-accrual (In Thousands) Commercial real estate loans: Commercial real estate $ 2,578 $ 214 $ 16,915 $ 19,707 $ 4,027,581 $ 4,047,288 $ 227 $ 19,608 $ 740 Multi-family mortgage 346 — — 346 1,414,845 1,415,191 — — — Construction — — — — 302,050 302,050 — — — Total commercial real estate loans 2,924 214 16,915 20,053 5,744,476 5,764,529 227 19,608 740 Commercial loans and leases: Commercial 829 75 3,808 4,712 979,729 984,441 — 3,886 — Equipment financing 3,202 4,367 8,984 16,553 1,354,095 1,370,648 — 14,984 2,474 Condominium association — — — — 44,579 44,579 — — — Total commercial loans and leases 4,031 4,442 12,792 21,265 2,378,403 2,399,668 — 18,870 2,474 Consumer loans: Residential mortgage 934 600 3,063 4,597 1,078,207 1,082,804 — 4,292 2,563 Home equity 1,290 44 387 1,721 342,461 344,182 1 860 — Other consumer — — — — 50,406 50,406 — — — Total consumer loans 2,224 644 3,450 6,318 1,471,074 1,477,392 1 5,152 2,563 Total loans and leases $ 9,179 $ 5,300 $ 33,157 $ 47,636 $ 9,593,953 $ 9,641,589 $ 228 $ 43,630 $ 5,777 Impaired Loans and Leases A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. The loans and leases risk-rated "substandard" or worse are considered impaired. Impaired loans and leases which do not share similar risk characteristics with other loans are individually evaluated for credit losses. Specific reserves are established for loans and leases with deterioration in the present value of expected future cash flows or, in the case of collateral-dependent loans and leases, any increase in the loan or lease amortized cost basis over the fair value of the underlying collateral discounted for estimated selling costs. In contrast, the loans and leases which share similar risk characteristics and are not included in the individually evaluated population are collectively evaluated for credit losses. The following tables present information regarding individually evaluated and collectively evaluated allowance for loan and lease losses for credit losses on loans and leases at the dates indicated. At March 31, 2024 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Individually evaluated $ 4,722 $ 5,228 $ — $ 9,950 Collectively evaluated 78,753 25,189 6,232 110,174 Total $ 83,475 $ 30,417 $ 6,232 $ 120,124 Loans and Leases: Individually evaluated $ 62,394 $ 28,178 $ 2,752 $ 93,324 Collectively evaluated 5,692,845 2,388,726 1,480,191 9,561,762 Total $ 5,755,239 $ 2,416,904 $ 1,482,943 $ 9,655,086 At December 31, 2023 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Individually evaluated $ 5,104 $ 3,947 $ 35 $ 9,086 Collectively evaluated 76,306 25,610 6,520 108,436 Total loans and leases $ 81,410 $ 29,557 $ 6,555 $ 117,522 Loans and Leases: Individually evaluated $ 64,953 $ 27,083 $ 4,750 $ 96,786 Collectively evaluated 5,699,576 2,372,585 1,472,642 9,544,803 Total loans and leases $ 5,764,529 $ 2,399,668 $ 1,477,392 $ 9,641,589 Loan Modifications The following tables present the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty during the periods indicated. Three Months Ended March 31, 2024 Number of Loans Amortized Cost % of Total Class of Loans and Leases Financial Effect (In thousands) Maturity Extension C&I 1 $ 30 — % This loan was given a 13-month maturity extension to assist the borrower. The financial effect was deemed "de minimis". Total 1 $ 30 — % Three Months Ended March 31, 2023 Number of Loans Amortized Cost % of Total Class of Loans and Leases Financial Effect (In thousands) Maturity Extension C&I 17 $ 6,123 0.41 % All 17 loans were given 6-month maturity extensions and restructured payment plans to assist the borrowers. The financial effect was deemed "de minimis". Total 17 $ 6,123 0.41 % The following tables present the aging analysis of loan modifications made to borrowers experiencing financial difficulty during the periods indicated. Three Months Ended March 31, 2024 Current 30-60 Days Past Due 61-90 Days Past Due 90+ Days Past Due Modified Paid Off Charged Off (In thousands) Total Modifications $ 30 — — — — — — Three Months Ended March 31, 2023 Current 30-60 Days Past Due 61-90 Days Past Due 90+ Days Past Due Modified Paid Off Charged Off (In thousands) Total Modifications $ 6,123 $ — $ — $ — $ — $ — $ —

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table sets forth the carrying value of goodwill and other intangible assets at the dates indicated: At March 31, 2024 At December 31, 2023 (In Thousands) Goodwill $ 241,222 $ 160,427 Additions — 80,795 Balance at end of period 241,222 241,222 Other intangible assets: Core deposits 21,410 23,118 Trade name 1,089 1,089 Total other intangible assets 22,499 24,207 Total goodwill and other intangible assets $ 263,721 $ 265,429 At December 31, 2013, the Company concluded that the BankRI name would continue to be utilized in its marketing strategies; therefore, the trade name with carrying value of $1.1 million has an indefinite life and ceased to amortize. The weighted-average amortization period for the core deposit intangible is 5.69 years. The estimated aggregate future amortization expense (in thousands) for other intangible assets for each of the next five years and thereafter is as follows: Remainder of 2024 $ 5,006 Year ending: 2025 5,595 2026 4,323 2027 3,243 2028 2,162 2029 1,081 Thereafter — Total $ 21,410

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) For the three months ended March 31, 2024 and 2023, the Company’s accumulated other comprehensive income (loss) includes the following three components: (i) unrealized holding gains (losses) on investment securities available-for-sale; (ii) change in the fair value of cash flow hedges; and (iii) adjustment of accumulated obligation for postretirement benefits. Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows for the periods indicated: Three Months Ended March 31, 2024 Investment Securities Available-for-Sale Net Change in Fair Value of Cash Flow Hedges Postretirement Accumulated Other (In Thousands) Balance at December 31, 2023 $ (52,546) $ (1,581) $ 1,329 $ (52,798) Other comprehensive income (loss) (6,277) (2,586) — (8,863) Reclassification adjustment for (income) expense recognized in earnings — 820 — 820 Balance at March 31, 2024 $ (58,823) $ (3,347) $ 1,329 $ (60,841) Three Months Ended March 31, 2023 Investment Securities Available-for-Sale Net Change in Fair Value of Cash Flow Hedges Postretirement Accumulated Other (In Thousands) Balance at December 31, 2022 $ (60,192) $ (2,243) $ 488 $ (61,947) Other comprehensive income (loss) 7,911 946 — 8,857 Reclassification adjustment for (income) expense recognized in earnings — 402 — 402 Balance at March 31, 2023 $ (52,281) $ (895) $ 488 $ (52,688)

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities The Company executes loan level derivative products such as interest rate swap agreements with commercial banking customers to aid them in managing their interest rate risk. The interest rate swap contracts allow the commercial banking customers to convert floating rate loan payments to fixed rate loan payments. The Company concurrently enters into offsetting swaps with a third party financial institution, effectively minimizing its net risk exposure resulting from such transactions. The third party financial institution exchanges the customer's fixed rate loan payments for floating rate loan payments. As the interest rate swap agreements associated with this program do not meet hedge accounting requirements, changes in the fair value are recognized directly in earnings. Based on the Company's intended use for the loan level derivatives at inception, the Company designates the derivative as either an economic hedge of an asset or liability, or a hedging instrument subject to the hedge accounting provisions of FASB ASC Topic 815, "Derivatives and Hedging". The Company believes using interest rate derivatives adds stability to interest income and expense and allows the Company to manage its exposure to interest rate movements. The Company enters into interest rate swaps as part of its interest rate risk management strategy. These interest rate swaps are designated as cash flow hedges and involve the receipt of variable rate amounts from a counterparty in exchange for the Company making fixed payments. The Company enters into interest rate swaps as hedging instruments against the interest rate risk associated with the Company's FHLB borrowings and loan portfolio. 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 ("OCI"), and is reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The following table reflects the Company's derivative positions as of the date indicated below for interest rate derivatives which qualify as cash flow hedges for accounting purposes. At March 31, 2024 Notional Amount Average Maturity Weighted Average Rate Fair Value Current Rate Paid Received Fixed Swap Rate (in thousands) (in years) (in thousands) Interest rate swaps on loans $ 225,000 2.65 5.33 % 3.39 % $ (4,876) At December 31, 2023 Notional Amount Average Maturity Weighted Average Rate Fair Value Current Rate Paid Received Fixed Swap Rate (in thousands) (in years) (in thousands) Interest rate swaps on loans $ 225,000 2.90 5.35 % 3.39 % $ (2,608) The Company utilizes risk participation agreements with other banks participating in commercial loan arrangements. Participating banks guarantee the performance on borrower-related interest rate swap contracts. Risk participation agreements are derivative financial instruments and are recorded at fair value. These derivatives are not designated as hedges and therefore, changes in fair value are recorded directly through earnings in other non-interest income at each reporting period. 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. The Company offers foreign exchange contracts to commercial borrowers to accommodate their business needs. These foreign exchange contracts do not qualify as hedges for accounting purposes. To mitigate the market and liquidity risk associated with these foreign exchange contracts, the Company enters into similar offsetting positions. Asset derivatives and liability derivatives are included in other assets and accrued expenses and other liabilities on the unaudited consolidated balance sheets. The following tables present the Company's customer related derivative positions for the periods indicated below for those derivatives not designated as hedging. Notional Amount Maturing Number of Positions 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 derivatives Receive fixed, pay variable 155 $ 31,628 $ 148,811 $ 136,385 $189,655 $ 1,219,116 $ 1,725,595 $ 106,420 Pay fixed, receive variable 155 31,628 148,811 136,385 189,655 1,219,116 1,725,595 106,420 Risk participation-out agreements 66 — 33,384 32,359 43,665 418,412 527,820 844 Risk participation-in agreements 10 — — 26,556 — 77,241 103,797 233 Foreign exchange contracts Buys foreign currency, sells U.S. currency 12 $ 2,667 $ — $ — $ — $ — $ 2,667 $ 209 Sells foreign currency, buys U.S. currency 14 3,072 — — — — 3,072 211 Notional Amount Maturing Number of Positions 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 derivatives Receive fixed, pay variable 153 $ 69,135 $ 156,567 $ 66,330 $ 244,615 $ 1,196,551 $ 1,733,198 $ 80,118 Pay fixed, receive variable 153 69,135 156,567 66,330 244,615 1,196,551 1,733,198 80,118 Risk participation-out agreements 67 22,979 33,409 6,038 64,875 415,086 542,387 1,238 Risk participation-in agreements 9 — — 23,155 3,577 73,581 100,313 310 Foreign exchange contracts Buys foreign currency, sells U.S. currency 23 $ 3,262 $ — $ — $ — $ — $ 3,262 $ 139 Sells foreign currency, buys U.S. currency 28 3,895 — — — — 3,895 132 Certain derivative agreements contain provisions that require the Company to post collateral if the derivative exposure exceeds a threshold amount. The Company did not post collateral to dealer counterparties as of March 31, 2024, compared to $2.4 million in the normal course of business as of December 31, 2023. The tables below present the offsetting of derivatives and amounts subject to master netting agreements not offset in the unaudited consolidated balance sheet at the dates indicated. At March 31, 2024 Gross Gross Amounts Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ — $ — $ — $ — $ — $ — Derivatives not designated as hedging instruments: Loan level derivatives $ 114,389 $ — $ 114,389 $ — $ — $ 114,389 Risk participation-out agreements 844 — 844 — — 844 Foreign exchange contracts 209 — 209 — — 209 Total $ 115,442 $ — $ 115,442 $ — $ — $ 115,442 Liability derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ 4,876 $ — $ 4,876 $ — $ — $ 4,876 Derivatives not designated as hedging instruments: Loan level derivatives $ 114,389 $ — $ 114,389 $ — $ 860 $ 113,529 Risk participation-in agreements 233 — 233 — — 233 Foreign exchange contracts 211 — 211 — — 211 Total $ 119,709 $ — $ 119,709 $ — $ 860 $ 118,849 At December 31, 2023 Gross Gross Amounts Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ 234 $ — $ 234 $ — $ — $ 234 Derivatives not designated as hedging instruments: Loan level derivatives $ 99,876 $ — $ 99,876 $ — $ — $ 99,876 Risk participation-out agreements 1,238 — 1,238 — — 1,238 Foreign exchange contracts 139 — 139 — — 139 Total $ 101,487 $ — $ 101,487 $ — $ — $ 101,487 Liability derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ 2,842 $ — $ 2,842 $ — $ — $ 2,842 Derivatives not designated as hedging instruments: Loan level derivatives $ 99,876 $ — $ 99,876 $ 20,353 $ 61,153 $ 18,370 Risk participation-in agreements 310 — 310 — — 310 Foreign exchange contracts 132 — 132 — — 132 Total $ 103,160 $ — $ 103,160 $ 20,353 $ 61,153 $ 21,654 The Company has agreements with certain of its derivative counterparties that contain credit-risk-related contingent provisions. These provisions provide the counterparty with the right to terminate its derivative positions and require the Company to settle its obligations under the agreements if the Company defaults on certain of its indebtedness or if the Company fails to maintain its status as a well-capitalized institution. Fair Value Three Months Ended Three Months Ended (Dollars in Thousands) Derivatives designated as hedges $ (4,876) $ (1,430) (Loss) gain in OCI on derivatives (effective portion), net of tax $ (3,347) $ (895) Gain (loss) reclassified from OCI into interest income or interest expense (effective portion) $ (1,102) $ (543) The guidance in ASU 2017-12 requires that amounts in accumulated other comprehensive income that are included in the assessment of effectiveness should be reclassified into earnings in the same period in which the hedged forecasted transactions impact earnings. A portion of the balance reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are made or received on the Company’s interest rate swaps. The Company monitors the risk of counterparty default on an ongoing basis.

Stock Based Compensation

Stock Based Compensation	3 Months Ended
	Mar. 31, 2024
Retirement Benefits [Abstract]
Stock Based Compensation	Stock Based Compensation As of March 31, 2024, the Company had one active equity plan: the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan ("2021 Plan"). As a result of the 2021 Plan having been approved by the Company's stockholders at the 2021 annual meeting of stockholders, the Company discontinued granting awards under the Brookline Bancorp, Inc. 2014 Equity Incentive Plan (the "2014 Plan" and together with the 2021 Plan, the "Plans"), and no further shares will be granted as awards under the 2014 Plan. Of the awarded shares under the Plans, generally 50% vest ratably over three years with one-third of such shares vesting at each of the first, second and third anniversary dates of the awards. These are referred to as "time-based shares". The remaining 50% of each award will vest three years after the award date based on the level of the Company's achievement of identified performance targets in comparison to the level of achievement of such identified performance targets by a defined peer group. These are referred to as "performance-based shares". If a participant leaves the Company prior to the third anniversary date of an award, any unvested shares are usually forfeited. Dividends declared with respect to shares awarded will be held by the Company and paid to the participant only when the shares vest. Under the Plans, shares of the Company's common stock are reserved for issuance as restricted stock awards to officers, employees, and non-employee directors of the Company. Shares issued upon vesting may be either authorized but unissued shares or reacquired shares held by the Company as treasury shares. Any shares not issued because vesting requirements are not met will be retired back to treasury and be made available again for issuance under the Plans. During the three months ended March 31, 2024 and March 31, 2023, no shares were issued, respectively, upon satisfaction of required conditions of the Plans.

Earnings per Share ("EPS")

Earnings per Share ("EPS")	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings per Share ("EPS")	Earnings per Share ("EPS") The following table is a reconciliation of basic EPS and diluted EPS: Three Months Ended March 31, 2024 March 31, 2023 Basic Fully Basic Fully (Dollars in Thousands, Except Per Share Amounts) Numerator: Net income $ 14,665 $ 14,665 $ 7,560 $ 7,560 Denominator: Weighted average shares outstanding 88,894,577 88,894,577 86,563,641 86,563,641 Effect of dilutive securities — 286,931 — 274,165 Adjusted weighted average shares outstanding 88,894,577 89,181,508 86,563,641 86,837,806 EPS $ 0.16 $ 0.16 $ 0.09 $ 0.09

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments A description of the valuation methodologies used for assets and liabilities measured at fair value on a recurring and non-recurring basis, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. There were no changes in the valuation techniques used during the three months ended March 31, 2024 and March 31, 2023. Assets and Liabilities Recorded at Fair Value on a Recurring Basis The following tables set forth the carrying value of assets and liabilities measured at fair value on a recurring basis at the dates indicated: Carrying Value as of March 31, 2024 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 194,334 $ — $ 194,334 GSE CMOs — 59,816 — 59,816 GSE MBSs — 162,024 — 162,024 Municipal obligations — 3,318 15,722 19,040 Corporate debt obligations — 15,406 2,368 17,774 U.S. Treasury bonds — 412,321 — 412,321 Foreign government obligations — 489 — 489 Total investment securities available-for-sale $ — $ 847,708 $ 18,090 $ 865,798 Assets: Interest rate derivatives — — — — Derivatives not designated as hedging instruments: Loan level derivatives — 114,389 — 114,389 Risk participation-out agreements — 844 — 844 Foreign exchange contracts — 209 — 209 Liabilities: Interest rate derivatives $ — $ 4,876 $ — $ 4,876 Derivatives not designated as hedging instruments: Loan level derivatives — 114,389 — 114,389 Risk participation-in agreements — 233 — 233 Foreign exchange contracts — 211 — 211 Carrying Value as of December 31, 2023 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 201,127 $ — $ 201,127 GSE CMOs — 61,617 — 61,617 GSE MBSs — 169,997 — 169,997 Municipal obligations — 3,398 15,524 18,922 Corporate debt obligations — 17,337 2,379 19,716 U.S. Treasury bonds — 444,737 — 444,737 Foreign government obligations — 485 — 485 Total investment securities available-for-sale $ — $ 898,698 $ 17,903 $ 916,601 Interest rate derivatives — 234 — 234 Loan level derivatives — 99,876 — 99,876 Risk participation-out agreements — 1,238 — 1,238 Foreign exchange contracts — 139 — 139 Liabilities: Interest rate derivatives $ — $ 2,842 $ — $ 2,842 Loan level derivatives — 99,876 — 99,876 Risk participation-in agreements — 310 — 310 Foreign exchange contracts — 132 — 132 Investment Securities Available-for-Sale The fair value of investment securities is based principally on market prices and dealer quotes received from third-party and nationally-recognized pricing services for identical investment securities such as U.S. Treasury and agency securities. These prices are validated by comparing the primary pricing source with an alternative pricing source when available. When quoted market prices for identical securities are unavailable, the Company uses market prices provided by independent pricing services based on recent trading activity and other observable information, including but not limited to market interest-rate curves, referenced credit spreads and estimated prepayment speeds, where applicable. These investments include GSE debentures, GSE mortgage-related securities, SBA commercial loan asset backed securities, corporate debt obligations, municipal obligations and trust preferred securities, all of which are included in Level 2. As of March 31, 2024, $18.1 million of investment securities available-for-sale are included in Level 3 within the investment portfolio. The composition of these assets are primarily composed of subordinated debt of local banks and private placement municipal securities. Of these securities, approximately $15.7 million are private placement municipal Bond Anticipation Notes. As of December 31, 2023, certain corporate debt securities and municipal obligations were valued using pricing models included in Level 3. Additionally, management reviews changes in fair value from period to period and performs testing to ensure that prices received from the third parties are consistent with management's expectation of the market. Changes in the prices obtained from the pricing service are analyzed from month to month, taking into consideration changes in market conditions including changes in mortgage spreads, changes in U.S. Treasury security yields and changes in generic pricing of 15-year and 30-year securities. Additional analysis may include a review of prices provided by other independent parties, a yield analysis, a review of average life changes using Bloomberg analytics and a review of historical pricing for a particular security. Derivatives and Hedging Instruments The fair value of interest rate derivatives designated as hedging instruments, loan level derivatives, risk participation agreements (RPA in/out), and foreign exchange contracts represent a Level 2 valuation and are based on settlement values adjusted for credit risks associated with the counterparties and the Company and observable market interest rate curves and foreign exchange rates where applicable. Credit risk adjustments consider factors such as the likelihood of default by the Company and its counterparties, its net exposures and remaining contractual life. To date, the Company has not realized any losses due to a counterparty's inability to pay any net uncollateralized position. Refer also to Note 8, "Derivatives and Hedging Activities." There were no transfers between levels for assets and liabilities recorded at fair value on a recurring basis at March 31, 2024 and December 31, 2023, respectively. The following tables summarize information about significant unobservable inputs related to the Company's categories of Level 3 financial assets and liabilities measured on a recurring basis. Quantitative Information About Level 3 Fair Value Measurements - Recurring Basis Financial Instrument Estimated Fair Value Valuation Technique(s) Significant Unobservable Inputs Range of Inputs Weighted Average (In Thousands) March 31, 2024 Assets Municipal obligations $ 15,722 Discounted Cash Flow Discount Rate from Bloomberg BVAL 0.0%-3.35% 1.39 % Corporate debt obligations 2,368 Observable Bids Bloomberg TRACE The following table summarizes the changes in estimated fair value for all assets and liabilities measured at estimated fair value on a recurring basis using significant unobservable inputs (Level 3). Changes in Estimated Fair Value of Level 3 Financial Assets and Liabilities - Recurring Basis Three Months Ended March 31, 2024 (In Thousands) Municipal obligations Corporate debt obligations Beginning balance $ 15,524 $ 2,379 Purchases 1,392 — Included in comprehensive income (80) (16) Transfers in — — Transfers out — — Sales — — Maturities, calls, and paydowns (1,114) 5 Ending balance $ 15,722 $ 2,368 Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis Assets and liabilities measured at fair value on a non-recurring basis are summarized below at the dated indicated: Carrying Value as of March 31, 2024 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 19,631 $ 19,631 OREO — — 780 780 Repossessed assets — 1,037 — 1,037 Total assets measured at fair value on a non-recurring basis $ — $ 1,037 $ 20,411 $ 21,448 Carrying Value as of December 31, 2023 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 16,720 $ 16,720 OREO — — 780 780 Repossessed assets — 914 — 914 Total assets measured at fair value on a non-recurring basis $ — $ 914 $ 17,500 $ 18,414 Collateral-Dependent Impaired Loans and Leases For nonperforming loans and leases where the credit quality of the borrower has deteriorated significantly, fair values of the underlying collateral were estimated using purchase and sales agreements (Level 2), or comparable sales or recent appraisals (Level 3), adjusted for selling costs and other expenses. Other Real Estate Owned ("OREO") The Company records OREO at the lower of cost or fair value. In estimating fair value, the Company utilizes purchase and sales agreements (Level 2) or comparable sales, recent appraisals or cash flows discounted at an interest rate commensurate with the risk associated with these cash flows (Level 3), adjusted for selling costs and other expenses. Repossessed Assets Repossessed assets are carried at estimated fair value less costs to sell based on auction pricing (Level 2). The table below presents quantitative information about significant unobservable inputs (Level 3) for assets measured at fair value on a non-recurring basis at the dates indicated. Fair Value Valuation Technique At March 31, At December 31, 2023 (Dollars in Thousands) Collateral-dependent impaired loans and leases $ 19,631 $ 16,720 Appraisal of collateral (1) Other real estate owned 780 780 Appraisal of collateral (1) ________________________________________________________________________ (1) Fair value is generally determined through independent appraisals of the underlying collateral. The Company may also use another available source of collateral assessment to determine a reasonable estimate of the fair value of the collateral. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of the unobservable inputs used may vary but is generally 0% - 10% on the discount for costs to sell and 0% - 15% on appraisal adjustments. Summary of Estimated Fair Values of Financial Instruments The following table presents the carrying amount, estimated fair value, and placement in the fair value hierarchy of the Company's financial instruments at the dates indicated. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which the fair value approximates carrying value include cash and cash equivalents, restricted equity securities, and accrued interest receivable. Financial liabilities for which the fair value approximates carrying value include non-maturity deposits, short-term borrowings, and accrued interest payable. Fair Value Measurements at March 31, 2024 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Loans held-for-sale $ 6,717 $ 6,717 $ — $ 6,717 $ — Loans and leases, net 9,534,962 9,154,363 — — 9,154,363 Financial liabilities: Certificates of deposits and brokered deposits 2,641,072 2,631,227 — 2,631,227 — Borrowed funds 1,361,881 1,359,144 — 1,359,144 — Fair Value Measurements at December 31, 2023 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Loans and leases, net $ 9,524,067 $ 9,230,864 $ — $ — $ 9,230,864 Financial liabilities: Certificates of deposits and brokered deposits 2,456,028 2,443,772 — 2,443,772 — Borrowed funds 1,376,670 1,375,506 — 1,375,506 — Loans held-for-sale The fair value of loans held-for-sale is based off of secondary market prices. Loans and Leases The fair values of performing loans and leases was estimated by segregating the portfolio into its primary loan and lease categories—commercial real estate mortgage, multi-family mortgage, construction, commercial, equipment financing, condominium association, residential mortgage, home equity and other consumer. These categories were further disaggregated based upon significant financial characteristics such as type of interest rate (fixed / variable) and payment status (current / past-due). Using the exit price valuation method, the Company discounts the contractual cash flows for each loan category using interest rates currently being offered for loans with similar terms to borrowers of similar quality and incorporates estimates of future loan prepayments. Deposits The fair values of deposit liabilities with no stated maturity (demand, NOW, savings and money market savings accounts) are equal to the carrying amounts payable on demand. The fair value of certificates of deposit represents contractual cash flows discounted using interest rates currently offered on deposits with similar characteristics and remaining maturities. The fair value estimates for deposits do not include the benefit that results from the low-cost funding provided by the Company's core deposit relationships (deposit-based intangibles). Borrowed Funds The fair value of federal funds purchased is equal to the amount borrowed. The fair value of FHLB advances and repurchase agreements represents contractual repayments discounted using interest rates currently available for borrowings with similar characteristics and remaining maturities. The fair values reported for retail repurchase agreements are based on the discounted value of contractual cash flows. The discount rates used are representative of approximate rates currently offered on borrowings with similar characteristics and maturities. The fair values reported for subordinated deferrable interest debentures are based on the discounted value of contractual cash flows. The discount rates used are representative of approximate rates currently offered on instruments with similar terms and maturities.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Off-Balance Sheet Financial Instruments The Company is party to off-balance sheet financial instruments in the normal course of business to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include loan commitments, standby and commercial letters of credit, and loan level derivatives. According to GAAP, these financial instruments are not recorded in the financial statements until they are funded or related fees are incurred or received. The contract amounts reflect the extent of the involvement the Company has in particular classes of these instruments. Such commitments involve, to varying degrees, elements of credit risk and interest-rate risk in excess of the amount recognized in the consolidated balance sheets. The Company's exposure to credit loss in the event of non-performance by the counterparty is represented by the fair value of the instruments. The Company uses the same policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Financial instruments with off-balance-sheet risk at the dates indicated follow: At March 31, 2024 At December 31, 2023 (In Thousands) Financial instruments whose contract amounts represent credit risk: Commitments to originate loans and leases: Commercial real estate $ 52,953 $ 88,435 Commercial 173,649 279,001 Residential mortgage 25,760 26,170 Unadvanced portion of loans and leases 1,147,990 1,208,553 Unused lines of credit: Home equity 768,814 762,235 Other consumer 116,661 114,816 Other commercial 501 475 Unused letters of credit: Financial standby letters of credit 11,221 8,221 Performance standby letters of credit 29,215 29,187 Commercial and similar letters of credit 2,792 3,278 Interest rate derivatives 225,000 225,000 Loan level derivatives (Notional principal amounts): Receive fixed, pay variable 1,725,595 1,733,198 Pay fixed, receive variable 1,725,595 1,733,198 Risk participation-out agreements 527,820 542,387 Risk participation-in agreements 103,797 100,313 Foreign exchange contracts (Notional amounts): Buys foreign currency, sells U.S. currency 2,667 3,262 Sells foreign currency, buys U.S. currency 3,072 3,895 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee by the customer. Since some of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if any, is based on management's credit evaluation of the borrower. Standby and commercial letters of credit are conditional commitments issued by the Company to guarantee performance of a customer to a third party. These standby and commercial letters of credit are primarily issued to support the financing needs of the Company's commercial customers. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. From time to time, the Company enters into loan level derivatives, risk participation agreements or foreign exchange contracts with commercial customers and third-party financial institutions. These derivatives allow the Company to offer long-term fixed-rate commercial loans while mitigating the interest-rate or foreign exchange risk of holding those loans. In a loan level derivative transaction, the Company lends to a commercial customer on a floating-rate basis and then enters into a loan level derivative with that customer. Concurrently, the Company enters into offsetting swaps with a third-party financial institution, effectively minimizing its net interest-rate risk exposure resulting from such transactions. The fair value of these derivatives are presented in Note 8. Lease Commitments The Company leases certain office space under various noncancellable operating leases as well as other assets. These leases have terms ranging from 1 year to over 20 years. Certain leases contain renewal options and escalation clauses which can increase rental expenses based principally on the consumer price index and fair market rental value provisions. All of the Company's current outstanding leases are classified as operating leases. The Company considered the following criteria when determining whether a contract contains a lease, the existence of an identifiable asset and the right to obtain substantially all of the economic benefits from use of the asset through the period. The Company uses the FHLB classic advance rates available as of the lease's start dates as the discount rate to determine the net present value of the remaining lease payments. Three Months Ended March 31, 2024 Three Months Ended March 31, 2023 (In Thousands) The components of lease expense was as follows: Operating lease cost $ 2,283 $ 2,112 Supplemental cash flow information related to leases was as follows: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 2,347 $ 2,353 Right-of-use assets obtained in exchange for new lease obligations: Operating leases assets $ 3,632 $ 8,880 Operating leases liabilities 3,632 10,697 At March 31, 2024 At December 31, 2023 (In Thousands) Supplemental balance sheet information related to leases was as follows: Operating Leases Operating lease right-of-use assets $ 33,133 $ 30,863 Operating lease liabilities 34,235 31,998 Weighted Average Remaining Lease Term Operating leases 8.76 8.87 Weighted Average Discount Rate Operating leases 4.0% 4.0% A summary of future minimum rental payments under such leases at the dates indicated follows: Minimum Rental Payments March 31, 2024 (In Thousands) Remainder of 2024 $ 6,202 Year ending: 2025 7,460 2026 6,123 2027 5,134 2028 3,663 2029 2,164 Thereafter 9,184 Total $ 39,930 Less imputed interest (5,695) Present value of lease liability $ 34,235 Certain leases contain escalation clauses for real estate taxes and other expenditures, which are not included above. The total real estate taxes were $0.6 million and $0.7 million for the three months ended March 31, 2024 and 2023, respectively. Total other expenditures were $0.1 million and $0.1 million for the three months ended March 31, 2024 and 2023, respectively. Total rental expense was $2.3 million and $2.1 million for the three months ended March 31, 2024 and 2023, respectively. Legal Proceedings In the normal course of business, there are various outstanding legal proceedings. In the opinion of management, after consulting with legal counsel, the consolidated financial position and results of operations of the Company are not expected to be affected materially by the outcome of such proceedings.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers Overview Revenue from contracts with customers in the scope of ASC 606 ("Topic 606") is measured based on the consideration specified in the contract with a customer and excludes amounts collected on behalf of third parties. The Company recognizes revenue from contracts with customers when it satisfies its performance obligations. The Company’s performance obligations are generally satisfied as services are rendered and can either be satisfied at a point in time or over time. Unsatisfied performance obligations at the report date are not material to our consolidated financial statements. In certain cases, other parties are involved with providing services to our customers. If the Company is a principal in the transaction (providing services itself or through a third party on its behalf), revenues are reported based on the gross consideration received from the customer and any related expenses are reported in gross noninterest expense. If the Company is an agent in the transaction (referring to another party to provide services), the Company reports its net fee or commission retained as revenue. A substantial portion of the Company’s revenue is specifically excluded from the scope of Topic 606. This exclusion is associated with financial instruments, including interest income on loans and investment securities, in addition to loan derivative income and gains on loan and investment sales. For the revenue that is in-scope of Topic 606, the following is a description of principal activities from which the Company generates its revenue from contracts with customers, separated by the timing of revenue recognition. Revenue Recognized at a Point in Time The Company recognizes revenue that is transactional in nature and such revenue is earned at a point in time. Revenue that is recognized at a point in time includes card interchange fees (fee income related to debit card transactions), ATM fees, wire transfer fees, overdraft charge fees, and stop-payment and returned check fees. Additionally, revenue is collected from loan fees, such as letters of credit, line renewal fees and application fees. Such revenue is derived from transactional information and is recognized as revenue immediately as the transactions occur or upon providing the service to complete the customer’s transaction. Revenue Recognized Over Time The Company recognizes revenue over a period of time, generally monthly, as services are performed and performance obligations are satisfied. Such revenue includes commissions on investments, insurance sales and service charges on deposit accounts. Fee revenue from service charges on deposit accounts represents the service charges assessed to customers who hold deposit accounts at the Banks.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net income	$ 14,665	$ 7,560

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies
Basis of Financial Statement Presentation	Basis of Financial Statement Presentation
Consolidation	The unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany transactions and balances are eliminated in consolidation.
Use of Estimates	In preparing these consolidated financial statements, management is required to make significant estimates and assumptions that affect the reported amounts of assets, liabilities, income, expenses and disclosure of contingent assets and liabilities. Actual results could differ from those estimates based upon changing conditions, including economic conditions and future events. Material estimates that are particularly susceptible to significant changes in the near-term include the determination of the allowance for credit losses, the determination of fair market values of acquired assets and liabilities, including acquired loans, the review of goodwill and intangible assets for impairment and the review of deferred tax assets for valuation allowances. The judgments used by management in applying these critical accounting policies may be affected by a further and prolonged deterioration in the economic environment, which may result in changes to future financial results. For example, subsequent evaluations of the loan and lease portfolio, in light of the factors then prevailing, may result in significant changes in the allowance for loan and lease losses in future periods, and the inability to collect outstanding principal may result in increased loan and lease losses.
Reclassification	Reclassification
Recent Accounting Pronouncements	Recent Accounting Pronouncements In March 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-04, "Reference Rate Reform (Topic 848)-Facilitation of the Effects of Reference Rate Reform on Financial Reporting" ("ASU 2020-04") to provide optional expedients and exceptions for applying GAAP to certain contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this update apply only to contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships existing as of December 31, 2022, for which an entity has elected certain optional expedients provided that those elections are retained through the end of the hedging relationship. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022 and do not apply to contract modifications made after December 31, 2022. In January 2021, the FASB issued ASU 2021-01, "Reference Rate Reform (Topic 848)" an update to address concerns around structural risk of interbank offered rates ("IBORs"), particularly, the risk of cessation of the LIBOR. The amendments in this update clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. In December 2022, FASB issued ASU 2022-06, "Reference Rate Reform (Topic 848)" which deferred the sunset date of Topic 848 to December 31, 2024, to allow for a transition period after the sunset of LIBOR. The Company has adopted the amendments in these updates and established a LIBOR transition committee to guide the Company’s transition from LIBOR. The Company has completed much of the work to transition off the LIBOR index consistent with industry timelines. The working group has identified its products that utilize LIBOR and has implemented fallback language to facilitate the transition to alternative rates. The Company has also evaluated its infrastructure and identified fallback rates as well as started offering alternative indices and new products tied to these alternative indices. The Company does not anticipate the adoption of these standards to have a material impact to the consolidated financial statements.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Securities Available-for-Sale Securities	The following tables set forth investment securities available-for-sale at the dates indicated: At March 31, 2024 Amortized Gross Gross Estimated (In Thousands) Investment securities available-for-sale: GSE debentures $ 215,358 $ 177 $ 21,201 $ 194,334 GSE CMOs 65,582 — 5,766 59,816 GSE MBSs 180,852 41 18,869 162,024 Municipal obligations 19,033 132 125 19,040 Corporate debt obligations 18,551 66 843 17,774 U.S. Treasury bonds 441,774 13 29,466 412,321 Foreign government obligations 500 — 11 489 Total investment securities available-for-sale $ 941,650 $ 429 $ 76,281 $ 865,798 December 31, 2023 Amortized Gross Gross Estimated (In Thousands) Investment securities available-for-sale: GSE debentures $ 220,604 $ 517 $ 19,994 $ 201,127 GSE CMOs 66,463 33 4,879 61,617 GSE MBSs 186,614 62 16,679 169,997 Municipal obligations 18,785 184 47 18,922 Corporate debt obligations 20,521 82 887 19,716 U.S. Treasury bonds 470,764 423 26,450 444,737 Foreign government obligations 500 — 15 485 Total investment securities available-for-sale $ 984,251 $ 1,301 $ 68,951 $ 916,601
Schedule of Investment Securities in a Continuous Unrealized Loss Position	Investment securities as of March 31, 2024 and December 31, 2023 that have been in a continuous unrealized loss position for less than twelve months or twelve months or longer are as follows: At March 31, 2024 Less than Twelve Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (In Thousands) Investment securities available-for-sale: GSE debentures $ 56,155 $ 525 $ 121,197 $ 20,676 $ 177,352 $ 21,201 GSE CMOs 11,137 464 48,679 5,302 59,816 5,766 GSE MBSs 22,198 479 136,520 18,390 158,718 18,869 Municipal obligations 403 4 3,672 121 4,075 125 Corporate debt obligations — — 15,406 843 15,406 843 U.S. Treasury bonds 108,974 1,047 263,749 28,419 372,723 29,466 Foreign government obligations — — 489 11 489 11 Temporarily impaired investment securities available-for-sale 198,867 2,519 589,712 73,762 788,579 76,281 Total temporarily impaired investment securities $ 198,867 $ 2,519 $ 589,712 $ 73,762 $ 788,579 $ 76,281 At December 31, 2023 Less than Twelve Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (In Thousands) Investment securities available-for-sale: GSE debentures $ 10,964 $ 12 $ 121,993 $ 19,982 $ 132,957 $ 19,994 GSE CMOs 42,057 3,547 14,571 1,332 56,628 4,879 GSE MBSs 34,317 561 122,367 16,118 156,684 16,679 Municipal obligations 3,859 47 — — 3,859 47 Corporate debt obligations 10,911 810 6,427 77 17,338 887 U.S. Treasury bonds 117,132 676 232,074 25,774 349,206 26,450 Foreign government obligations — — 485 15 485 15 Temporarily impaired investment securities available-for-sale 219,240 5,653 497,917 63,298 717,157 68,951 Total temporarily impaired investment securities $ 219,240 $ 5,653 $ 497,917 $ 63,298 $ 717,157 $ 68,951
Schedule of Maturities of the Investments in Debt Securities	The final stated maturities of the debt securities are as follows for the periods indicated: At March 31, 2024 At December 31, 2023 Amortized Estimated Weighted Amortized Estimated Weighted (Dollars in Thousands) Investment securities available-for-sale: Within 1 year $ 124,153 $ 123,534 4.07 % $ 141,989 $ 141,340 4.27 % After 1 year through 5 years 339,194 325,338 3.06 % 342,525 332,734 3.15 % After 5 years through 10 years 251,347 215,200 1.66 % 268,182 233,059 1.69 % Over 10 years 226,956 201,726 3.31 % 231,555 209,468 3.35 % $ 941,650 $ 865,798 2.91 % $ 984,251 $ 916,601 3.00 %
Schedule of Sales of Investment Securities	The Company did not sell any investment securities available-for-sale during the three months ended March 31, 2024, compared to the three months ended March 31, 2023 where the proceeds from the sale of investment securities available-for-sale were $224.8 million. Securities sales executed during the three months ended 2023 were related to the acquisition of PCSB and the restructuring of the acquired investment portfolio. Three Months Ended March 31, 2024 2023 (In Thousands) Investment securities available-for-sale: Proceeds from sales: $ — $ 224,832 Gross gains from sales — 2,702 Gross losses from sales — (1,001) Gain on sales of securities, net $ — $ 1,701

Loans and Leases (Tables)

Loans and Leases (Tables)	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Schedule of loan and lease balances for the originated and acquired portfolios	The following table presents the amortized cost of loans and leases and weighted average coupon rates for the loan and lease portfolios at the dates indicated: At March 31, 2024 At December 31, 2023 Balance Weighted Balance Weighted (Dollars In Thousands) Commercial real estate loans: Commercial real estate $ 3,994,766 5.48 % $ 4,047,288 5.47 % Multi-family mortgage 1,421,183 5.15 % 1,415,191 5.14 % Construction 339,290 7.01 % 302,050 6.86 % Total commercial real estate loans 5,755,239 5.49 % 5,764,529 5.46 % Commercial loans and leases: Commercial 999,613 6.84 % 984,441 6.83 % Equipment financing 1,374,546 7.90 % 1,370,648 7.76 % Condominium association 42,745 5.02 % 44,579 5.05 % Total commercial loans and leases 2,416,904 7.41 % 2,399,668 7.33 % Consumer loans: Residential mortgage 1,086,574 4.44 % 1,082,804 4.41 % Home equity 347,885 8.04 % 344,182 8.03 % Other consumer 48,484 7.67 % 50,406 7.68 % Total consumer loans 1,482,943 5.39 % 1,477,392 5.36 % Total loans and leases $ 9,655,086 5.95 % $ 9,641,589 5.91 %

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Schedule of Changes in the Allowance for Loan and Lease Losses	The following tables present the changes in the allowance for loan and lease losses in loans and leases by portfolio segment for the periods indicated: Three Months Ended March 31, 2024 Commercial Commercial Consumer Total (In Thousands) Balance at December 31, 2023 $ 81,410 $ 29,557 $ 6,555 $ 117,522 Charge-offs (606) (4,771) (13) (5,390) Recoveries — 292 17 309 Provision (credit) for loan and lease losses excluding unfunded commitments 2,671 5,339 (327) 7,683 Balance at March 31, 2024 $ 83,475 $ 30,417 $ 6,232 $ 120,124 Three Months Ended March 31, 2023 Commercial Commercial Consumer Total (In Thousands) Balance at December 31, 2022 $ 68,154 $ 26,604 $ 3,724 $ 98,482 Charge-offs — (840) (11) (851) Recoveries 6 383 11 400 Provision (credit) for loan and lease losses excluding unfunded commitments 14,532 6,614 1,688 22,834 Balance at March 31, 2023 $ 82,692 $ 32,761 $ 5,412 $ 120,865
Schedule of Provisions for Credit Losses	The provision (credit) for credit losses are set forth below for the periods indicated: Three Months Ended March 31, 2024 2023 (In Thousands) Provision (credit) for loan and lease losses: Commercial real estate $ 2,671 $ 14,532 Commercial 5,339 6,614 Consumer (327) 1,688 Total (credit) provision for loan and lease losses 7,683 22,834 Unfunded commitments (260) 2,510 Investment securities available-for-sale (44) 198 Total provision (credit) for credit losses $ 7,379 $ 25,542
Schedule of the Recorded Investments by Credit Quality Indicator, by Loan Class	The following table presents the amortized cost basis of loans in each class by credit quality indicator and year of origination as of March 31, 2024. March 31, 2024 2024 2023 2022 2021 2020 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Commercial Real Estate Pass $ 12,483 $ 377,205 $ 679,682 $ 774,582 $ 375,384 $ 1,635,333 $ 65,395 $ 14,869 $ 3,934,933 OAEM — — 3,704 2,511 3,278 11,730 — — 21,223 Substandard — — 611 — — 37,999 — — 38,610 Total 12,483 377,205 683,997 777,093 378,662 1,685,062 65,395 14,869 3,994,766 Current-period gross writeoffs — — — — — 606 — — 606 Multi-Family Mortgage Pass 24,385 73,124 218,968 258,456 163,949 637,634 5,903 36,568 1,418,987 Substandard — — — — — 2,196 — — 2,196 Total 24,385 73,124 218,968 258,456 163,949 639,830 5,903 36,568 1,421,183 Construction Pass 2,769 26,495 240,015 34,230 6,313 235 7,558 — 317,615 OAEM — — 7,781 — — — — — 7,781 Substandard — — 2,417 11,477 — — — — 13,894 March 31, 2024 2024 2023 2022 2021 2020 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Total 2,769 26,495 250,213 45,707 6,313 235 7,558 — 339,290 Commercial Pass 16,057 230,158 129,135 121,279 35,412 92,575 343,898 4,999 973,513 OAEM — — — 72 1,838 — 7,020 — 8,930 Substandard — 4 — 8 110 12,564 1,972 575 15,233 Doubtful — — — — — 2 — 1,935 1,937 Total 16,057 230,162 129,135 121,359 37,360 105,141 352,890 7,509 999,613 Current-period gross writeoffs — — 1,000 3,700 — 15 — — 4,715 Equipment Financing Pass 89,534 425,237 366,186 189,506 114,358 142,080 1,412 5,563 1,333,876 OAEM — 4,480 2,677 2,345 1,213 275 11,530 — 22,520 Substandard — 1,449 8,522 3,702 1,359 3,103 — — 18,135 Doubtful — — — — — 15 — — 15 Total 89,534 431,166 377,385 195,553 116,930 145,473 12,942 5,563 1,374,546 Current-period gross writeoffs — 546 1,141 469 576 1,024 — — 3,756 Condominium Association Pass 404 4,567 7,347 9,475 6,426 12,020 2,354 152 42,745 Total 404 4,567 7,347 9,475 6,426 12,020 2,354 152 42,745 Other Consumer Pass 100 349 155 402 3 2,081 45,392 2 48,484 Total 100 349 155 402 3 2,081 45,392 2 48,484 Current-period gross writeoffs 6 — — — — 6 — — 12 Total Pass 145,732 1,137,135 1,641,488 1,387,930 701,845 2,521,958 471,912 62,153 8,070,153 OAEM — 4,480 14,162 4,928 6,329 12,005 18,550 — 60,454 Substandard — 1,453 11,550 15,187 1,469 55,862 1,972 575 88,068 Doubtful — — — — — 17 — 1,935 1,952 Total $ 145,732 $ 1,143,068 $ 1,667,200 $ 1,408,045 $ 709,643 $ 2,589,842 $ 492,434 $ 64,663 $ 8,220,627 As of March 31, 2024, there were no loans categorized as definite loss. For residential mortgage and home equity loans, the borrowers' credit scores contribute as a reserve metric in the retail loss rate model. At March 31, 2024 2024 2023 2022 2021 2020 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Residential Credit Scores Over 700 $ 15,975 $ 72,334 $ 159,670 $ 214,374 $ 118,406 $ 340,471 $ 4,153 $ 437 $ 925,820 661 - 700 894 8,437 18,125 9,168 5,306 27,552 — — 69,482 600 and below — 4,562 11,919 7,310 7,694 26,337 — — 57,822 Data not available * — 1,549 1,937 6,878 — 23,086 — — 33,450 Total $ 16,869 $ 86,882 $ 191,651 $ 237,730 $ 131,406 $ 417,446 $ 4,153 $ 437 $ 1,086,574 Home Equity Credit Scores Over 700 $ 971 $ 5,419 $ 3,875 $ 1,633 $ 758 $ 8,224 $ 278,942 $ 4,298 $ 304,120 661 - 700 91 747 156 — — 529 20,082 616 22,221 600 and below 100 146 140 40 — 348 16,138 2,562 19,474 Data not available * — 22 — 1 — 44 1,855 148 2,070 Total $ 1,162 $ 6,334 $ 4,171 $ 1,674 $ 758 $ 9,145 $ 317,017 $ 7,624 $ 347,885 _______________________________________________________________________________ * Primarily represents loans made to trusts and purchased mortgages. The following tables present the recorded investment in loans in each class as of December 31, 2023, by credit quality indicator. December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Commercial Real Estate Pass $ 386,962 $ 690,374 $ 776,834 $ 378,322 $ 422,028 $ 1,245,148 $ 75,746 $ 14,882 $ 3,990,296 OAEM — — 2,529 3,300 1,784 1,674 — — 9,287 Substandard — — — — 22,685 23,089 — — 45,774 Doubtful — — — — — 1,931 — — 1,931 Total 386,962 690,374 779,363 381,622 446,497 1,271,842 75,746 14,882 4,047,288 Current -period gross writeoffs — 4 942 — — 258 — — 1,204 December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Multi-Family Mortgage Pass 68,963 217,727 256,198 165,770 193,162 468,623 5,947 36,585 1,412,975 Substandard — — — — — 2,216 — — 2,216 Total 68,963 217,727 256,198 165,770 193,162 470,839 5,947 36,585 1,415,191 Construction Pass 25,691 212,904 36,192 6,292 1,176 239 5,984 — 288,478 Substandard — 2,417 11,155 — — — — — 13,572 Total 25,691 215,321 47,347 6,292 1,176 239 5,984 — 302,050 Commercial Pass 220,563 137,332 125,385 37,601 23,046 69,104 337,316 3,570 953,917 OAEM — — 79 2,081 1,291 — 1,827 8,225 13,503 Substandard 4 — 9 — 12,362 273 981 3,388 17,017 Doubtful — — — — 1 1 — 2 4 Total 220,567 137,332 125,473 39,682 36,700 69,378 340,124 15,185 984,441 Current-period gross writeoffs 1,000 3,500 4,842 1,164 673 2,379 — — 13,558 Equipment Financing Pass 443,878 389,083 205,208 125,888 88,465 74,727 12,919 5,740 1,345,908 OAEM — 2,144 1,232 1,033 159 — — — 4,568 Substandard 1,250 8,107 4,105 2,181 2,255 2,259 — — 20,157 Doubtful — — — — — 15 — — 15 Total 445,128 399,334 210,545 129,102 90,879 77,001 12,919 5,740 1,370,648 Current-period gross writeoffs 498 1,075 1,915 122 553 2,275 — — 6,438 Condominium Association Pass 4,460 7,569 9,186 6,686 4,414 9,086 3,010 168 44,579 Total 4,460 7,569 9,186 6,686 4,414 9,086 3,010 168 44,579 Other Consumer Pass 408 200 516 5 21 2,062 47,191 3 50,406 Total 408 200 516 5 21 2,062 47,191 3 50,406 Current-period gross writeoffs 6 — 2 — 11 9 — — 28 Total Pass 1,150,925 1,655,189 1,409,519 720,564 732,312 1,868,989 488,113 60,948 8,086,559 OAEM — 2,144 3,840 6,414 3,234 1,674 1,827 8,225 27,358 Substandard 1,254 10,524 15,269 2,181 37,302 27,837 981 3,388 98,736 December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Doubtful — — — — 1 1,947 — 2 1,950 Total $ 1,152,179 $ 1,667,857 $ 1,428,628 $ 729,159 $ 772,849 $ 1,900,447 $ 490,921 $ 72,563 $ 8,214,603 As of December 31, 2023, there were no loans categorized as definite loss. At December 31, 2023 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total (In Thousands) Residential Credit Scores Over 700 $ 72,022 $ 161,491 $ 210,338 $ 118,752 $ 84,792 $ 261,474 $ 4,998 $ 439 $ 914,306 661 - 700 12,200 20,824 11,059 7,970 4,402 24,152 — — 80,607 600 and below 1,943 12,108 7,197 7,093 5,449 23,838 — — 57,628 Data not available * 1,353 2,246 3,025 — 448 23,163 28 — 30,263 Total $ 87,518 $ 196,669 $ 231,619 $ 133,815 $95,091 $ 332,627 $ 5,026 $ 439 $ 1,082,804 Current-period gross writeoffs — — — — — 25 — — 25 Home Equity Credit Scores Over 700 $ 5,505 $ 3,807 $ 1,667 $ 769 $ 1,218 $ 7,366 $ 272,169 $ 4,617 $ 297,118 661 - 700 1,005 310 — 36 — 671 21,936 830 24,788 600 and below 148 143 41 — 39 402 17,349 2,008 20,130 Data not available * 23 — 1 — — 45 2,062 15 2,146 Total $ 6,681 $ 4,260 $ 1,709 $ 805 $ 1,257 $ 8,484 $ 313,516 $ 7,470 $ 344,182 _______________________________________________________________________________ * Primarily represents loans made to trusts and purchased mortgages.
Schedule of Information Regarding the Aging of Past Due Loans, by Loan Class	The following table presents an age analysis of the amortized cost basis in loans and leases as of March 31, 2024. At March 31, 2024 Past Due Past 31-60 61-90 Greater Total Current Total Loans Non-accrual Non-accrual (In Thousands) Commercial real estate loans: Commercial real estate $ 480 $ 1,928 $ 14,932 $ 17,340 $ 3,977,426 $ 3,994,766 $ 175 $ 18,394 $ (629) Multi-family mortgage — — — — 1,421,183 1,421,183 — — — Construction — 2,418 — 2,418 336,872 339,290 — — — Total commercial real estate loans 480 4,346 14,932 19,758 5,735,481 5,755,239 175 18,394 (629) Commercial loans and leases: Commercial 879 639 3,049 4,567 995,046 999,613 36 3,096 — Equipment financing 20,656 4,378 7,353 32,387 1,342,159 1,374,546 150 13,668 2,152 Condominium association — — — — 42,745 42,745 — — — Total commercial loans and leases 21,535 5,017 10,402 36,954 2,379,950 2,416,904 186 16,764 2,152 Consumer loans: Residential mortgage 1,465 131 2,628 4,224 1,082,350 1,086,574 — 4,563 2,752 Home equity 1,399 254 450 2,103 345,782 347,885 2 950 — Other consumer 1 — — 1 48,483 48,484 — 1 — Total consumer loans 2,865 385 3,078 6,328 1,476,615 1,482,943 2 5,514 2,752 Total loans and leases $ 24,880 $ 9,748 $ 28,412 $ 63,040 $ 9,592,046 $ 9,655,086 $ 363 $ 40,672 $ 4,275 The Company did not recognize any interest income on nonaccrual loans for the three months ended March 31, 2024. The following tables present an age analysis of the recorded investment in originated and acquired loans and leases as of December 31, 2023. At December 31, 2023 Past Due Loans and Non-accrual 31-60 61-90 Greater Total Current Total Loans Non-accrual (In Thousands) Commercial real estate loans: Commercial real estate $ 2,578 $ 214 $ 16,915 $ 19,707 $ 4,027,581 $ 4,047,288 $ 227 $ 19,608 $ 740 Multi-family mortgage 346 — — 346 1,414,845 1,415,191 — — — Construction — — — — 302,050 302,050 — — — Total commercial real estate loans 2,924 214 16,915 20,053 5,744,476 5,764,529 227 19,608 740 Commercial loans and leases: Commercial 829 75 3,808 4,712 979,729 984,441 — 3,886 — Equipment financing 3,202 4,367 8,984 16,553 1,354,095 1,370,648 — 14,984 2,474 Condominium association — — — — 44,579 44,579 — — — Total commercial loans and leases 4,031 4,442 12,792 21,265 2,378,403 2,399,668 — 18,870 2,474 Consumer loans: Residential mortgage 934 600 3,063 4,597 1,078,207 1,082,804 — 4,292 2,563 Home equity 1,290 44 387 1,721 342,461 344,182 1 860 — Other consumer — — — — 50,406 50,406 — — — Total consumer loans 2,224 644 3,450 6,318 1,471,074 1,477,392 1 5,152 2,563 Total loans and leases $ 9,179 $ 5,300 $ 33,157 $ 47,636 $ 9,593,953 $ 9,641,589 $ 228 $ 43,630 $ 5,777
Schedule of the Impaired and Non-impaired Loans and Leases, by Loan and Leases Class	The following tables present information regarding individually evaluated and collectively evaluated allowance for loan and lease losses for credit losses on loans and leases at the dates indicated. At March 31, 2024 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Individually evaluated $ 4,722 $ 5,228 $ — $ 9,950 Collectively evaluated 78,753 25,189 6,232 110,174 Total $ 83,475 $ 30,417 $ 6,232 $ 120,124 Loans and Leases: Individually evaluated $ 62,394 $ 28,178 $ 2,752 $ 93,324 Collectively evaluated 5,692,845 2,388,726 1,480,191 9,561,762 Total $ 5,755,239 $ 2,416,904 $ 1,482,943 $ 9,655,086 At December 31, 2023 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Individually evaluated $ 5,104 $ 3,947 $ 35 $ 9,086 Collectively evaluated 76,306 25,610 6,520 108,436 Total loans and leases $ 81,410 $ 29,557 $ 6,555 $ 117,522 Loans and Leases: Individually evaluated $ 64,953 $ 27,083 $ 4,750 $ 96,786 Collectively evaluated 5,699,576 2,372,585 1,472,642 9,544,803 Total loans and leases $ 5,764,529 $ 2,399,668 $ 1,477,392 $ 9,641,589
Schedule of Financing Receivable, Modified	The following tables present the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty during the periods indicated. Three Months Ended March 31, 2024 Number of Loans Amortized Cost % of Total Class of Loans and Leases Financial Effect (In thousands) Maturity Extension C&I 1 $ 30 — % This loan was given a 13-month maturity extension to assist the borrower. The financial effect was deemed "de minimis". Total 1 $ 30 — % Three Months Ended March 31, 2023 Number of Loans Amortized Cost % of Total Class of Loans and Leases Financial Effect (In thousands) Maturity Extension C&I 17 $ 6,123 0.41 % All 17 loans were given 6-month maturity extensions and restructured payment plans to assist the borrowers. The financial effect was deemed "de minimis". Total 17 $ 6,123 0.41 % The following tables present the aging analysis of loan modifications made to borrowers experiencing financial difficulty during the periods indicated. Three Months Ended March 31, 2024 Current 30-60 Days Past Due 61-90 Days Past Due 90+ Days Past Due Modified Paid Off Charged Off (In thousands) Total Modifications $ 30 — — — — — — Three Months Ended March 31, 2023 Current 30-60 Days Past Due 61-90 Days Past Due 90+ Days Past Due Modified Paid Off Charged Off (In thousands) Total Modifications $ 6,123 $ — $ — $ — $ — $ — $ —

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Other Intangible Assets	The following table sets forth the carrying value of goodwill and other intangible assets at the dates indicated: At March 31, 2024 At December 31, 2023 (In Thousands) Goodwill $ 241,222 $ 160,427 Additions — 80,795 Balance at end of period 241,222 241,222 Other intangible assets: Core deposits 21,410 23,118 Trade name 1,089 1,089 Total other intangible assets 22,499 24,207 Total goodwill and other intangible assets $ 263,721 $ 265,429
Schedule of Estimated Aggregate Future Amortization Expense for Intangible Assets	The estimated aggregate future amortization expense (in thousands) for other intangible assets for each of the next five years and thereafter is as follows: Remainder of 2024 $ 5,006 Year ending: 2025 5,595 2026 4,323 2027 3,243 2028 2,162 2029 1,081 Thereafter — Total $ 21,410

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive (Loss) Income by Component, Net of Tax	Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows for the periods indicated: Three Months Ended March 31, 2024 Investment Securities Available-for-Sale Net Change in Fair Value of Cash Flow Hedges Postretirement Accumulated Other (In Thousands) Balance at December 31, 2023 $ (52,546) $ (1,581) $ 1,329 $ (52,798) Other comprehensive income (loss) (6,277) (2,586) — (8,863) Reclassification adjustment for (income) expense recognized in earnings — 820 — 820 Balance at March 31, 2024 $ (58,823) $ (3,347) $ 1,329 $ (60,841) Three Months Ended March 31, 2023 Investment Securities Available-for-Sale Net Change in Fair Value of Cash Flow Hedges Postretirement Accumulated Other (In Thousands) Balance at December 31, 2022 $ (60,192) $ (2,243) $ 488 $ (61,947) Other comprehensive income (loss) 7,911 946 — 8,857 Reclassification adjustment for (income) expense recognized in earnings — 402 — 402 Balance at March 31, 2023 $ (52,281) $ (895) $ 488 $ (52,688)

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Hedged Forecasted Transaction Affects Earnings	The following table reflects the Company's derivative positions as of the date indicated below for interest rate derivatives which qualify as cash flow hedges for accounting purposes. At March 31, 2024 Notional Amount Average Maturity Weighted Average Rate Fair Value Current Rate Paid Received Fixed Swap Rate (in thousands) (in years) (in thousands) Interest rate swaps on loans $ 225,000 2.65 5.33 % 3.39 % $ (4,876) At December 31, 2023 Notional Amount Average Maturity Weighted Average Rate Fair Value Current Rate Paid Received Fixed Swap Rate (in thousands) (in years) (in thousands) Interest rate swaps on loans $ 225,000 2.90 5.35 % 3.39 % $ (2,608)
Schedule of Customer Related Derivative Positions	The following tables present the Company's customer related derivative positions for the periods indicated below for those derivatives not designated as hedging. Notional Amount Maturing Number of Positions 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 derivatives Receive fixed, pay variable 155 $ 31,628 $ 148,811 $ 136,385 $189,655 $ 1,219,116 $ 1,725,595 $ 106,420 Pay fixed, receive variable 155 31,628 148,811 136,385 189,655 1,219,116 1,725,595 106,420 Risk participation-out agreements 66 — 33,384 32,359 43,665 418,412 527,820 844 Risk participation-in agreements 10 — — 26,556 — 77,241 103,797 233 Foreign exchange contracts Buys foreign currency, sells U.S. currency 12 $ 2,667 $ — $ — $ — $ — $ 2,667 $ 209 Sells foreign currency, buys U.S. currency 14 3,072 — — — — 3,072 211 Notional Amount Maturing Number of Positions 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 derivatives Receive fixed, pay variable 153 $ 69,135 $ 156,567 $ 66,330 $ 244,615 $ 1,196,551 $ 1,733,198 $ 80,118 Pay fixed, receive variable 153 69,135 156,567 66,330 244,615 1,196,551 1,733,198 80,118 Risk participation-out agreements 67 22,979 33,409 6,038 64,875 415,086 542,387 1,238 Risk participation-in agreements 9 — — 23,155 3,577 73,581 100,313 310 Foreign exchange contracts Buys foreign currency, sells U.S. currency 23 $ 3,262 $ — $ — $ — $ — $ 3,262 $ 139 Sells foreign currency, buys U.S. currency 28 3,895 — — — — 3,895 132
Schedule of Offsetting Derivatives and Amounts Subject to Master Netting Agreements Not Offset in the Audited Consolidated Balance Sheet	The tables below present the offsetting of derivatives and amounts subject to master netting agreements not offset in the unaudited consolidated balance sheet at the dates indicated. At March 31, 2024 Gross Gross Amounts Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ — $ — $ — $ — $ — $ — Derivatives not designated as hedging instruments: Loan level derivatives $ 114,389 $ — $ 114,389 $ — $ — $ 114,389 Risk participation-out agreements 844 — 844 — — 844 Foreign exchange contracts 209 — 209 — — 209 Total $ 115,442 $ — $ 115,442 $ — $ — $ 115,442 Liability derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ 4,876 $ — $ 4,876 $ — $ — $ 4,876 Derivatives not designated as hedging instruments: Loan level derivatives $ 114,389 $ — $ 114,389 $ — $ 860 $ 113,529 Risk participation-in agreements 233 — 233 — — 233 Foreign exchange contracts 211 — 211 — — 211 Total $ 119,709 $ — $ 119,709 $ — $ 860 $ 118,849 At December 31, 2023 Gross Gross Amounts Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ 234 $ — $ 234 $ — $ — $ 234 Derivatives not designated as hedging instruments: Loan level derivatives $ 99,876 $ — $ 99,876 $ — $ — $ 99,876 Risk participation-out agreements 1,238 — 1,238 — — 1,238 Foreign exchange contracts 139 — 139 — — 139 Total $ 101,487 $ — $ 101,487 $ — $ — $ 101,487 Liability derivatives Derivatives designated as hedging instruments: Interest rate derivatives $ 2,842 $ — $ 2,842 $ — $ — $ 2,842 Derivatives not designated as hedging instruments: Loan level derivatives $ 99,876 $ — $ 99,876 $ 20,353 $ 61,153 $ 18,370 Risk participation-in agreements 310 — 310 — — 310 Foreign exchange contracts 132 — 132 — — 132 Total $ 103,160 $ — $ 103,160 $ 20,353 $ 61,153 $ 21,654
Schedule of Gain (Loss) of Derivatives	These provisions provide the counterparty with the right to terminate its derivative positions and require the Company to settle its obligations under the agreements if the Company defaults on certain of its indebtedness or if the Company fails to maintain its status as a well-capitalized institution. Fair Value Three Months Ended Three Months Ended (Dollars in Thousands) Derivatives designated as hedges $ (4,876) $ (1,430) (Loss) gain in OCI on derivatives (effective portion), net of tax $ (3,347) $ (895) Gain (loss) reclassified from OCI into interest income or interest expense (effective portion) $ (1,102) $ (543)

Earnings per Share ("EPS") (Tab

Earnings per Share ("EPS") (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Schedule of Reconciliation of Basic EPS and Diluted EPS	The following table is a reconciliation of basic EPS and diluted EPS: Three Months Ended March 31, 2024 March 31, 2023 Basic Fully Basic Fully (Dollars in Thousands, Except Per Share Amounts) Numerator: Net income $ 14,665 $ 14,665 $ 7,560 $ 7,560 Denominator: Weighted average shares outstanding 88,894,577 88,894,577 86,563,641 86,563,641 Effect of dilutive securities — 286,931 — 274,165 Adjusted weighted average shares outstanding 88,894,577 89,181,508 86,563,641 86,837,806 EPS $ 0.16 $ 0.16 $ 0.09 $ 0.09

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets Measured on Recurring Basis	The following tables set forth the carrying value of assets and liabilities measured at fair value on a recurring basis at the dates indicated: Carrying Value as of March 31, 2024 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 194,334 $ — $ 194,334 GSE CMOs — 59,816 — 59,816 GSE MBSs — 162,024 — 162,024 Municipal obligations — 3,318 15,722 19,040 Corporate debt obligations — 15,406 2,368 17,774 U.S. Treasury bonds — 412,321 — 412,321 Foreign government obligations — 489 — 489 Total investment securities available-for-sale $ — $ 847,708 $ 18,090 $ 865,798 Assets: Interest rate derivatives — — — — Derivatives not designated as hedging instruments: Loan level derivatives — 114,389 — 114,389 Risk participation-out agreements — 844 — 844 Foreign exchange contracts — 209 — 209 Liabilities: Interest rate derivatives $ — $ 4,876 $ — $ 4,876 Derivatives not designated as hedging instruments: Loan level derivatives — 114,389 — 114,389 Risk participation-in agreements — 233 — 233 Foreign exchange contracts — 211 — 211 Carrying Value as of December 31, 2023 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 201,127 $ — $ 201,127 GSE CMOs — 61,617 — 61,617 GSE MBSs — 169,997 — 169,997 Municipal obligations — 3,398 15,524 18,922 Corporate debt obligations — 17,337 2,379 19,716 U.S. Treasury bonds — 444,737 — 444,737 Foreign government obligations — 485 — 485 Total investment securities available-for-sale $ — $ 898,698 $ 17,903 $ 916,601 Interest rate derivatives — 234 — 234 Loan level derivatives — 99,876 — 99,876 Risk participation-out agreements — 1,238 — 1,238 Foreign exchange contracts — 139 — 139 Liabilities: Interest rate derivatives $ — $ 2,842 $ — $ 2,842 Loan level derivatives — 99,876 — 99,876 Risk participation-in agreements — 310 — 310 Foreign exchange contracts — 132 — 132
Schedule of Fair Value, Liabilities Measured on Recurring Basis	The following tables set forth the carrying value of assets and liabilities measured at fair value on a recurring basis at the dates indicated: Carrying Value as of March 31, 2024 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 194,334 $ — $ 194,334 GSE CMOs — 59,816 — 59,816 GSE MBSs — 162,024 — 162,024 Municipal obligations — 3,318 15,722 19,040 Corporate debt obligations — 15,406 2,368 17,774 U.S. Treasury bonds — 412,321 — 412,321 Foreign government obligations — 489 — 489 Total investment securities available-for-sale $ — $ 847,708 $ 18,090 $ 865,798 Assets: Interest rate derivatives — — — — Derivatives not designated as hedging instruments: Loan level derivatives — 114,389 — 114,389 Risk participation-out agreements — 844 — 844 Foreign exchange contracts — 209 — 209 Liabilities: Interest rate derivatives $ — $ 4,876 $ — $ 4,876 Derivatives not designated as hedging instruments: Loan level derivatives — 114,389 — 114,389 Risk participation-in agreements — 233 — 233 Foreign exchange contracts — 211 — 211 Carrying Value as of December 31, 2023 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 201,127 $ — $ 201,127 GSE CMOs — 61,617 — 61,617 GSE MBSs — 169,997 — 169,997 Municipal obligations — 3,398 15,524 18,922 Corporate debt obligations — 17,337 2,379 19,716 U.S. Treasury bonds — 444,737 — 444,737 Foreign government obligations — 485 — 485 Total investment securities available-for-sale $ — $ 898,698 $ 17,903 $ 916,601 Interest rate derivatives — 234 — 234 Loan level derivatives — 99,876 — 99,876 Risk participation-out agreements — 1,238 — 1,238 Foreign exchange contracts — 139 — 139 Liabilities: Interest rate derivatives $ — $ 2,842 $ — $ 2,842 Loan level derivatives — 99,876 — 99,876 Risk participation-in agreements — 310 — 310 Foreign exchange contracts — 132 — 132
Schedule of Quantitative Information About Significant Unobservable Inputs (Level 3) for Assets Measured at Fair Value on a Recurring Basis	The following tables summarize information about significant unobservable inputs related to the Company's categories of Level 3 financial assets and liabilities measured on a recurring basis. Quantitative Information About Level 3 Fair Value Measurements - Recurring Basis Financial Instrument Estimated Fair Value Valuation Technique(s) Significant Unobservable Inputs Range of Inputs Weighted Average (In Thousands) March 31, 2024 Assets Municipal obligations $ 15,722 Discounted Cash Flow Discount Rate from Bloomberg BVAL 0.0%-3.35% 1.39 % Corporate debt obligations 2,368 Observable Bids Bloomberg TRACE The table below presents quantitative information about significant unobservable inputs (Level 3) for assets measured at fair value on a non-recurring basis at the dates indicated. Fair Value Valuation Technique At March 31, At December 31, 2023 (Dollars in Thousands) Collateral-dependent impaired loans and leases $ 19,631 $ 16,720 Appraisal of collateral (1) Other real estate owned 780 780 Appraisal of collateral (1) ________________________________________________________________________ (1) Fair value is generally determined through independent appraisals of the underlying collateral. The Company may also use another available source of collateral assessment to determine a reasonable estimate of the fair value of the collateral. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of the unobservable inputs used may vary but is generally 0% - 10% on the discount for costs to sell and 0% - 15% on appraisal adjustments.
Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table summarizes the changes in estimated fair value for all assets and liabilities measured at estimated fair value on a recurring basis using significant unobservable inputs (Level 3). Changes in Estimated Fair Value of Level 3 Financial Assets and Liabilities - Recurring Basis Three Months Ended March 31, 2024 (In Thousands) Municipal obligations Corporate debt obligations Beginning balance $ 15,524 $ 2,379 Purchases 1,392 — Included in comprehensive income (80) (16) Transfers in — — Transfers out — — Sales — — Maturities, calls, and paydowns (1,114) 5 Ending balance $ 15,722 $ 2,368
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring and Non-Recurring Basis	Assets and liabilities measured at fair value on a non-recurring basis are summarized below at the dated indicated: Carrying Value as of March 31, 2024 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 19,631 $ 19,631 OREO — — 780 780 Repossessed assets — 1,037 — 1,037 Total assets measured at fair value on a non-recurring basis $ — $ 1,037 $ 20,411 $ 21,448 Carrying Value as of December 31, 2023 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 16,720 $ 16,720 OREO — — 780 780 Repossessed assets — 914 — 914 Total assets measured at fair value on a non-recurring basis $ — $ 914 $ 17,500 $ 18,414
Schedule of the Carrying Values and Estimated Fair Values	The following table presents the carrying amount, estimated fair value, and placement in the fair value hierarchy of the Company's financial instruments at the dates indicated. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which the fair value approximates carrying value include cash and cash equivalents, restricted equity securities, and accrued interest receivable. Financial liabilities for which the fair value approximates carrying value include non-maturity deposits, short-term borrowings, and accrued interest payable. Fair Value Measurements at March 31, 2024 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Loans held-for-sale $ 6,717 $ 6,717 $ — $ 6,717 $ — Loans and leases, net 9,534,962 9,154,363 — — 9,154,363 Financial liabilities: Certificates of deposits and brokered deposits 2,641,072 2,631,227 — 2,631,227 — Borrowed funds 1,361,881 1,359,144 — 1,359,144 — Fair Value Measurements at December 31, 2023 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Loans and leases, net $ 9,524,067 $ 9,230,864 $ — $ — $ 9,230,864 Financial liabilities: Certificates of deposits and brokered deposits 2,456,028 2,443,772 — 2,443,772 — Borrowed funds 1,376,670 1,375,506 — 1,375,506 —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Financial Instruments with Off-Balance Sheet Risk	Financial instruments with off-balance-sheet risk at the dates indicated follow: At March 31, 2024 At December 31, 2023 (In Thousands) Financial instruments whose contract amounts represent credit risk: Commitments to originate loans and leases: Commercial real estate $ 52,953 $ 88,435 Commercial 173,649 279,001 Residential mortgage 25,760 26,170 Unadvanced portion of loans and leases 1,147,990 1,208,553 Unused lines of credit: Home equity 768,814 762,235 Other consumer 116,661 114,816 Other commercial 501 475 Unused letters of credit: Financial standby letters of credit 11,221 8,221 Performance standby letters of credit 29,215 29,187 Commercial and similar letters of credit 2,792 3,278 Interest rate derivatives 225,000 225,000 Loan level derivatives (Notional principal amounts): Receive fixed, pay variable 1,725,595 1,733,198 Pay fixed, receive variable 1,725,595 1,733,198 Risk participation-out agreements 527,820 542,387 Risk participation-in agreements 103,797 100,313 Foreign exchange contracts (Notional amounts): Buys foreign currency, sells U.S. currency 2,667 3,262 Sells foreign currency, buys U.S. currency 3,072 3,895
Schedule of Lease Cost, Supplemental Cash Flow and Supplemental Balance Sheet Information	The Company considered the following criteria when determining whether a contract contains a lease, the existence of an identifiable asset and the right to obtain substantially all of the economic benefits from use of the asset through the period. The Company uses the FHLB classic advance rates available as of the lease's start dates as the discount rate to determine the net present value of the remaining lease payments. Three Months Ended March 31, 2024 Three Months Ended March 31, 2023 (In Thousands) The components of lease expense was as follows: Operating lease cost $ 2,283 $ 2,112 Supplemental cash flow information related to leases was as follows: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 2,347 $ 2,353 Right-of-use assets obtained in exchange for new lease obligations: Operating leases assets $ 3,632 $ 8,880 Operating leases liabilities 3,632 10,697 At March 31, 2024 At December 31, 2023 (In Thousands) Supplemental balance sheet information related to leases was as follows: Operating Leases Operating lease right-of-use assets $ 33,133 $ 30,863 Operating lease liabilities 34,235 31,998 Weighted Average Remaining Lease Term Operating leases 8.76 8.87 Weighted Average Discount Rate Operating leases 4.0% 4.0%
Schedule of Maturities of Operating Leases	A summary of future minimum rental payments under such leases at the dates indicated follows: Minimum Rental Payments March 31, 2024 (In Thousands) Remainder of 2024 $ 6,202 Year ending: 2025 7,460 2026 6,123 2027 5,134 2028 3,663 2029 2,164 Thereafter 9,184 Total $ 39,930 Less imputed interest (5,695) Present value of lease liability $ 34,235

Basis of Presentation (Details)

Basis of Presentation (Details)	3 Months Ended
	Mar. 31, 2024 office bank
Basis of Presentation
Number of full-service banking offices	29
Number of lending offices | office	3
BankRI
Basis of Presentation
Number of full-service banking offices	22
UpCounty Realty Corp
Basis of Presentation
Number of full-service banking offices	14

Investment Securities - Summary

Investment Securities - Summary of Available-for-sale and Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 941,650	$ 984,251
Gross Unrealized Gains	429	1,301
Gross Unrealized Losses	76,281	68,951
Estimated Fair Value	865,798	916,601
GSE debentures
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	215,358	220,604
Gross Unrealized Gains	177	517
Gross Unrealized Losses	21,201	19,994
Estimated Fair Value	194,334	201,127
GSE CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	65,582	66,463
Gross Unrealized Gains	0	33
Gross Unrealized Losses	5,766	4,879
Estimated Fair Value	59,816	61,617
GSE MBSs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	180,852	186,614
Gross Unrealized Gains	41	62
Gross Unrealized Losses	18,869	16,679
Estimated Fair Value	162,024	169,997
Municipal obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19,033	18,785
Gross Unrealized Gains	132	184
Gross Unrealized Losses	125	47
Estimated Fair Value	19,040	18,922
Corporate debt obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	18,551	20,521
Gross Unrealized Gains	66	82
Gross Unrealized Losses	843	887
Estimated Fair Value	17,774	19,716
U.S. Treasury bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	441,774	470,764
Gross Unrealized Gains	13	423
Gross Unrealized Losses	29,466	26,450
Estimated Fair Value	412,321	444,737
Foreign government obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500	500
Gross Unrealized Gains	0	0
Gross Unrealized Losses	11	15
Estimated Fair Value	$ 489	$ 485

Investment Securities - Narrati

Investment Securities - Narrative (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) security	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) security
Investment Securities
Debt securities, available-for-sale, impairment loss	$ 0
Investment securities available-for-sale	865,798,000		$ 916,601,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)	(75,900,000)		(67,700,000)
Debt securities, available-for-sale, unrealized loss position	$ 788,579,000		$ 717,157,000
Percentage of securities in unrealized loss positions, available-for-sale securities	91.10%		77.80%
Debt securities, available-for-sale, unrealized loss position, accumulated loss	$ 76,281,000		$ 68,951,000
Accrued interest receivable	$ 4,100,000		4,100,000
Number of days past due to be placed in nonaccrual status	90 days
Purchases of securities available-for-sale	$ 1,369,000	$ 274,440,000
Estimated fair value of debt securities have right to call or prepay the obligations	121,200,000		122,000,000
Estimated fair value of debt securities that have right to call or prepay the obligations, scheduled maturities of less than one year	6,500,000		6,400,000
Estimated fair value of debt securities have right to call or prepay the obligations, scheduled maturities of after one year through five years	59,300,000		59,700,000
Estimated fair value of debt securities have right to call or prepay the obligations, scheduled maturities after six years through ten years	47,600,000		48,000,000
Estimated fair value of debt securities have right to call or prepay the obligations, scheduled maturities of which is after 10 years	7,800,000		7,900,000
US Government Sponsored Enterprises
Investment Securities
Investment securities available-for-sale	38,400,000		33,900,000
GSE debentures
Investment Securities
Investment securities available-for-sale	194,334,000		201,127,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)	$ (21,000,000)		$ (19,500,000)
AFS number of positions | security	40		43
Number of securities in unrealized loss positions | security	36		27
GSE CMOs
Investment Securities
Investment securities available-for-sale	$ 59,800,000		$ 61,600,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)	$ (5,800,000)		$ (4,800,000)
AFS number of positions | security	60		60
Number of securities in unrealized loss positions | security			57
Purchases of securities available-for-sale	$ 0	0
GSE MBSs
Investment Securities
Investment securities available-for-sale	162,000,000		$ 170,000,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)	$ (18,800,000)		$ (16,600,000)
AFS number of positions | security	146		146
Number of securities in unrealized loss positions | security	129		125
Purchases of securities available-for-sale	$ 0	39,400,000
Municipal obligations
Investment Securities
Investment securities available-for-sale	$ 19,040,000		$ 18,922,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)			$ 100,000
AFS number of positions | security	44		44
Number of securities in unrealized loss positions | security	10		6
Purchases of securities available-for-sale	$ 1,400,000		$ 1,100,000
Corporate debt obligations
Investment Securities
Investment securities available-for-sale	17,774,000		19,716,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)	$ (800,000)		$ (800,000)
AFS number of positions | security	10		11
Number of securities in unrealized loss positions | security	5		9
Purchases of securities available-for-sale	$ 0	0
U.S. Treasury bonds
Investment Securities
Debt securities, available-for-sale, impairment loss	0
Investment securities available-for-sale	412,300,000		$ 444,700,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)	$ (29,500,000)		$ (26,000,000)
AFS number of positions | security	62		66
Number of securities in unrealized loss positions | security	56		53
Purchases of securities available-for-sale	$ 0	$ 234,000,000
Foreign government obligations
Investment Securities
Investment securities available-for-sale	$ 489,000		$ 485,000
AFS number of positions | security	1		1
Collateral Pledged
Investment Securities
Investment securities pledged as collateral	$ 743,200,000		$ 791,200,000
Outstanding borrowings	$ 0		$ 0

Investment Securities - Other-T

Investment Securities - Other-Than-Temporary Impairment (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Investment securities available-for-sale:
Less than twelve months, estimated fair value	$ 198,867	$ 219,240
Less than twelve months, unrealized losses	2,519	5,653
Twelve months or longer, estimated fair value	589,712	497,917
Twelve months or longer, unrealized losses	73,762	63,298
Debt securities, available-for-sale, unrealized loss position	788,579	717,157
Total, unrealized losses	76,281	68,951
Total temporarily impaired investment securities
Less than twelve months, estimated fair value	198,867	219,240
Less than twelve months, unrealized losses	2,519	5,653
Twelve months or longer, estimated fair value	589,712	497,917
Twelve months or longer, unrealized losses	73,762	63,298
Total, estimated fair value	788,579	717,157
Total, unrealized losses	76,281	68,951
GSE debentures
Investment securities available-for-sale:
Less than twelve months, estimated fair value	56,155	10,964
Less than twelve months, unrealized losses	525	12
Twelve months or longer, estimated fair value	121,197	121,993
Twelve months or longer, unrealized losses	20,676	19,982
Debt securities, available-for-sale, unrealized loss position	177,352	132,957
Total, unrealized losses	21,201	19,994
GSE CMOs
Investment securities available-for-sale:
Less than twelve months, estimated fair value	11,137	42,057
Less than twelve months, unrealized losses	464	3,547
Twelve months or longer, estimated fair value	48,679	14,571
Twelve months or longer, unrealized losses	5,302	1,332
Debt securities, available-for-sale, unrealized loss position	59,816	56,628
Total, unrealized losses	5,766	4,879
GSE MBSs
Investment securities available-for-sale:
Less than twelve months, estimated fair value	22,198	34,317
Less than twelve months, unrealized losses	479	561
Twelve months or longer, estimated fair value	136,520	122,367
Twelve months or longer, unrealized losses	18,390	16,118
Debt securities, available-for-sale, unrealized loss position	158,718	156,684
Total, unrealized losses	18,869	16,679
Municipal obligations
Investment securities available-for-sale:
Less than twelve months, estimated fair value	403	3,859
Less than twelve months, unrealized losses	4	47
Twelve months or longer, estimated fair value	3,672	0
Twelve months or longer, unrealized losses	121	0
Debt securities, available-for-sale, unrealized loss position	4,075	3,859
Total, unrealized losses	125	47
Corporate debt obligations
Investment securities available-for-sale:
Less than twelve months, estimated fair value	0	10,911
Less than twelve months, unrealized losses	0	810
Twelve months or longer, estimated fair value	15,406	6,427
Twelve months or longer, unrealized losses	843	77
Debt securities, available-for-sale, unrealized loss position	15,406	17,338
Total, unrealized losses	843	887
U.S. Treasury bonds
Investment securities available-for-sale:
Less than twelve months, estimated fair value	108,974	117,132
Less than twelve months, unrealized losses	1,047	676
Twelve months or longer, estimated fair value	263,749	232,074
Twelve months or longer, unrealized losses	28,419	25,774
Debt securities, available-for-sale, unrealized loss position	372,723	349,206
Total, unrealized losses	29,466	26,450
Foreign government obligations
Investment securities available-for-sale:
Less than twelve months, estimated fair value	0	0
Less than twelve months, unrealized losses	0	0
Twelve months or longer, estimated fair value	489	485
Twelve months or longer, unrealized losses	11	15
Debt securities, available-for-sale, unrealized loss position	489	485
Total, unrealized losses	$ 11	$ 15

Investment Securities - Portfol

Investment Securities - Portfolio Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
Within 1 year	$ 124,153	$ 141,989
After 1 year through 5 years	339,194	342,525
After 5 years through 10 years	251,347	268,182
Over 10 years	226,956	231,555
Amortized Cost	941,650	984,251
Estimated Fair Value
Within 1 year	123,534	141,340
After 1 year through 5 years	325,338	332,734
After 5 years through 10 years	215,200	233,059
Over 10 years	201,726	209,468
Total	$ 865,798	$ 916,601
Weighted Average Rate
Within 1 year	4.07%	4.27%
After 1 year through 5 years	3.06%	3.15%
After 5 years through 10 years	1.66%	1.69%
Over 10 years	3.31%	3.35%
Total	2.91%	3%

Investment Securities - Securit

Investment Securities - Security Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Investment securities available-for-sale:
Proceeds from sales:	$ 0	$ 224,832
Gross gains from sales	0	2,702
Gross losses from sales	0	(1,001)
Gain on sales of securities, net	$ 0	$ 1,701

Loans and Leases - Summary of L

Loans and Leases - Summary of Loan and Lease Balances and Weighted Average Coupon Rates (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 9,655,086	$ 9,641,589
Weighted Average Coupon	5.95%	5.91%
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 3,994,766	$ 4,047,288
Multi-family mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	1,421,183	1,415,191
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	339,290	302,050
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	999,613	984,441
Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	1,374,546	1,370,648
Condominium association
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	42,745	44,579
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	1,086,574	1,082,804
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	347,885	344,182
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	48,484	50,406
Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 5,755,239	$ 5,764,529
Weighted Average Coupon	5.49%	5.46%
Commercial real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 3,994,766	$ 4,047,288
Weighted Average Coupon	5.48%	5.47%
Commercial real estate loans | Multi-family mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 1,421,183	$ 1,415,191
Weighted Average Coupon	5.15%	5.14%
Commercial real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 339,290	$ 302,050
Weighted Average Coupon	7.01%	6.86%
Commercial loans and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 2,416,904	$ 2,399,668
Weighted Average Coupon	7.41%	7.33%
Commercial loans and leases | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 999,613	$ 984,441
Weighted Average Coupon	6.84%	6.83%
Commercial loans and leases | Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 1,374,546	$ 1,370,648
Weighted Average Coupon	7.90%	7.76%
Commercial loans and leases | Condominium association
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 42,745	$ 44,579
Weighted Average Coupon	5.02%	5.05%
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 1,482,943	$ 1,477,392
Weighted Average Coupon	5.39%	5.36%
Consumer loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 1,086,574	$ 1,082,804
Weighted Average Coupon	4.44%	4.41%
Consumer loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 347,885	$ 344,182
Weighted Average Coupon	8.04%	8.03%
Consumer loans | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 48,484	$ 50,406
Weighted Average Coupon	7.67%	7.68%

Loans and Leases - Narrative (D

Loans and Leases - Narrative (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unamortized deferred loan origination costs	$ (26,500,000)	$ (29,000,000)
Total loans and leases	$ 9,655,086,000	9,641,589,000
Greater New York And New Jersey Metropolitan Area
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of total loan balance	29.20%
Other Areas Of The United States Excluding Greater New York And New Jersey Metropolitan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of total loan balance	70.80%
FRB Borrowings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 0	0
Asset Pledged as Collateral with Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,400,000,000	3,500,000,000
Loans and Leases Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest on loans and leases	$ 40,800,000	$ 39,100,000

Allowance for Credit Losses - S

Allowance for Credit Losses - Summary of Changes in the Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Changes in allowance for loan losses
Balance at the beginning of the period	$ 117,522	$ 98,482	$ 98,482
Charge-offs	(5,390)	(851)
Recoveries	309	400
Provision (credit) for loan and lease losses excluding unfunded commitments	7,683	22,834
Balance at the end of the period	120,124	120,865	117,522
Commercial Real Estate
Changes in allowance for loan losses
Balance at the beginning of the period	81,410	68,154	68,154
Charge-offs	(606)	0
Recoveries	0	6
Provision (credit) for loan and lease losses excluding unfunded commitments	2,671	14,532
Balance at the end of the period	83,475	82,692	81,410
Commercial
Changes in allowance for loan losses
Balance at the beginning of the period	29,557	26,604	26,604
Charge-offs	(4,771)	(840)
Recoveries	292	383
Provision (credit) for loan and lease losses excluding unfunded commitments	5,339	6,614
Balance at the end of the period	30,417	32,761	29,557
Consumer
Changes in allowance for loan losses
Balance at the beginning of the period	6,555	3,724	3,724
Charge-offs	(13)	(11)
Recoveries	17	11
Provision (credit) for loan and lease losses excluding unfunded commitments	(327)	1,688
Balance at the end of the period	$ 6,232	$ 5,412	$ 6,555

Allowance for Credit Losses - N

Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Provision (credit) for loan and lease losses:
Unfunded credit commitments liability included in other liabilities	$ 15.8	$ 19.8
Unfunded commitment related charge-offs	$ 3.7
Allowance for credit loss, completion of revision, period from forecast start date	5 years
General allowance for loan and lease losses	$ 110.2	108.4
Specific allowance for loan and lease losses	10	$ 9.1
Increase (decrease) in specific portion of the allowance for loan and lease losses	0.9
Commercial Loans
Provision (credit) for loan and lease losses:
Increase (decrease) in specific reserves for loan and lease losses	1.3
Commercial Real Estate Loans
Provision (credit) for loan and lease losses:
Increase (decrease) in specific reserves for loan and lease losses	$ (0.4)
Minimum
Provision (credit) for loan and lease losses:
Allowance for credit loss, start of revision, period from forecast start date	2 years
Maximum
Provision (credit) for loan and lease losses:
Allowance for credit loss, start of revision, period from forecast start date	3 years

Allowance for Credit Losses -_2

Allowance for Credit Losses - Schedule of Provisions for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Provision (credit) for loan and lease losses:
Provision (credit) for loan and lease losses excluding unfunded commitments	$ 7,683	$ 22,834
Total provision (credit) for credit losses	7,379	25,542
Unfunded commitments
Provision (credit) for loan and lease losses:
Provision for other credit losses	(260)	2,510
Investment securities available-for-sale
Provision (credit) for loan and lease losses:
Provision for other credit losses	(44)	198
Commercial real estate loans
Provision (credit) for loan and lease losses:
Provision (credit) for loan and lease losses excluding unfunded commitments	2,671	14,532
Commercial loans
Provision (credit) for loan and lease losses:
Provision (credit) for loan and lease losses excluding unfunded commitments	5,339	6,614
Consumer loans
Provision (credit) for loan and lease losses:
Provision (credit) for loan and lease losses excluding unfunded commitments	$ (327)	$ 1,688

Allowance for Credit Losses -_3

Allowance for Credit Losses - Summary of the Recorded Investments By Credit Quality Indicator, By Loan Class (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Credit Quality Information
Total	$ 9,655,086,000		$ 9,641,589,000
Current-period gross writeoffs
Total	5,390,000	$ 851,000
Definite Loss
Credit Quality Information
Total	0		0
Commercial real estate
Credit Quality Information
Year one	12,483,000		386,962,000
Year two	377,205,000		690,374,000
Year three	683,997,000		779,363,000
Year four	777,093,000		381,622,000
Year five	378,662,000		446,497,000
Prior	1,685,062,000		1,271,842,000
Revolving Loans	65,395,000		75,746,000
Revolving Loans Converted to Term Loans	14,869,000		14,882,000
Total	3,994,766,000		4,047,288,000
Current-period gross writeoffs
Year one	0		0
Year two	0		4,000
Year three	0		942,000
Year four	0		0
Year five	0		0
Prior	606,000		258,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	606,000		1,204,000
Commercial real estate | Pass
Credit Quality Information
Year one	12,483,000		386,962,000
Year two	377,205,000		690,374,000
Year three	679,682,000		776,834,000
Year four	774,582,000		378,322,000
Year five	375,384,000		422,028,000
Prior	1,635,333,000		1,245,148,000
Revolving Loans	65,395,000		75,746,000
Revolving Loans Converted to Term Loans	14,869,000		14,882,000
Total	3,934,933,000		3,990,296,000
Commercial real estate | OAEM
Credit Quality Information
Year one	0		0
Year two	0		0
Year three	3,704,000		2,529,000
Year four	2,511,000		3,300,000
Year five	3,278,000		1,784,000
Prior	11,730,000		1,674,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	21,223,000		9,287,000
Commercial real estate | Substandard
Credit Quality Information
Year one	0		0
Year two	0		0
Year three	611,000		0
Year four	0		0
Year five	0		22,685,000
Prior	37,999,000		23,089,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	38,610,000		45,774,000
Commercial real estate | Doubtful
Credit Quality Information
Year one			0
Year two			0
Year three			0
Year four			0
Year five			0
Prior			1,931,000
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total			1,931,000
Multi-Family Mortgage
Credit Quality Information
Year one	24,385,000		68,963,000
Year two	73,124,000		217,727,000
Year three	218,968,000		256,198,000
Year four	258,456,000		165,770,000
Year five	163,949,000		193,162,000
Prior	639,830,000		470,839,000
Revolving Loans	5,903,000		5,947,000
Revolving Loans Converted to Term Loans	36,568,000		36,585,000
Total	1,421,183,000		1,415,191,000
Multi-Family Mortgage | Pass
Credit Quality Information
Year one	24,385,000		68,963,000
Year two	73,124,000		217,727,000
Year three	218,968,000		256,198,000
Year four	258,456,000		165,770,000
Year five	163,949,000		193,162,000
Prior	637,634,000		468,623,000
Revolving Loans	5,903,000		5,947,000
Revolving Loans Converted to Term Loans	36,568,000		36,585,000
Total	1,418,987,000		1,412,975,000
Multi-Family Mortgage | Substandard
Credit Quality Information
Year one	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	2,196,000		2,216,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	2,196,000		2,216,000
Construction
Credit Quality Information
Year one	2,769,000		25,691,000
Year two	26,495,000		215,321,000
Year three	250,213,000		47,347,000
Year four	45,707,000		6,292,000
Year five	6,313,000		1,176,000
Prior	235,000		239,000
Revolving Loans	7,558,000		5,984,000
Revolving Loans Converted to Term Loans	0		0
Total	339,290,000		302,050,000
Construction | Pass
Credit Quality Information
Year one	2,769,000		25,691,000
Year two	26,495,000		212,904,000
Year three	240,015,000		36,192,000
Year four	34,230,000		6,292,000
Year five	6,313,000		1,176,000
Prior	235,000		239,000
Revolving Loans	7,558,000		5,984,000
Revolving Loans Converted to Term Loans	0		0
Total	317,615,000		288,478,000
Construction | OAEM
Credit Quality Information
Year one	0
Year two	0
Year three	7,781,000
Year four	0
Year five	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total	7,781,000
Construction | Substandard
Credit Quality Information
Year one	0		0
Year two	0		2,417,000
Year three	2,417,000		11,155,000
Year four	11,477,000		0
Year five	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	13,894,000		13,572,000
Commercial
Credit Quality Information
Year one	16,057,000		220,567,000
Year two	230,162,000		137,332,000
Year three	129,135,000		125,473,000
Year four	121,359,000		39,682,000
Year five	37,360,000		36,700,000
Prior	105,141,000		69,378,000
Revolving Loans	352,890,000		340,124,000
Revolving Loans Converted to Term Loans	7,509,000		15,185,000
Total	999,613,000		984,441,000
Current-period gross writeoffs
Year one	0		1,000,000
Year two	0		3,500,000
Year three	1,000,000		4,842,000
Year four	3,700,000		1,164,000
Year five	0		673,000
Prior	15,000		2,379,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	4,715,000		13,558,000
Commercial | Pass
Credit Quality Information
Year one	16,057,000		220,563,000
Year two	230,158,000		137,332,000
Year three	129,135,000		125,385,000
Year four	121,279,000		37,601,000
Year five	35,412,000		23,046,000
Prior	92,575,000		69,104,000
Revolving Loans	343,898,000		337,316,000
Revolving Loans Converted to Term Loans	4,999,000		3,570,000
Total	973,513,000		953,917,000
Commercial | OAEM
Credit Quality Information
Year one	0		0
Year two	0		0
Year three	0		79,000
Year four	72,000		2,081,000
Year five	1,838,000		1,291,000
Prior	0		0
Revolving Loans	7,020,000		1,827,000
Revolving Loans Converted to Term Loans	0		8,225,000
Total	8,930,000		13,503,000
Commercial | Substandard
Credit Quality Information
Year one	0		4,000
Year two	4,000		0
Year three	0		9,000
Year four	8,000		0
Year five	110,000		12,362,000
Prior	12,564,000		273,000
Revolving Loans	1,972,000		981,000
Revolving Loans Converted to Term Loans	575,000		3,388,000
Total	15,233,000		17,017,000
Commercial | Doubtful
Credit Quality Information
Year one	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		1,000
Prior	2,000		1,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	1,935,000		2,000
Total	1,937,000		4,000
Equipment Financing
Credit Quality Information
Year one	89,534,000		445,128,000
Year two	431,166,000		399,334,000
Year three	377,385,000		210,545,000
Year four	195,553,000		129,102,000
Year five	116,930,000		90,879,000
Prior	145,473,000		77,001,000
Revolving Loans	12,942,000		12,919,000
Revolving Loans Converted to Term Loans	5,563,000		5,740,000
Total	1,374,546,000		1,370,648,000
Current-period gross writeoffs
Year one	0		498,000
Year two	546,000		1,075,000
Year three	1,141,000		1,915,000
Year four	469,000		122,000
Year five	576,000		553,000
Prior	1,024,000		2,275,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	3,756,000		6,438,000
Equipment Financing | Pass
Credit Quality Information
Year one	89,534,000		443,878,000
Year two	425,237,000		389,083,000
Year three	366,186,000		205,208,000
Year four	189,506,000		125,888,000
Year five	114,358,000		88,465,000
Prior	142,080,000		74,727,000
Revolving Loans	1,412,000		12,919,000
Revolving Loans Converted to Term Loans	5,563,000		5,740,000
Total	1,333,876,000		1,345,908,000
Equipment Financing | OAEM
Credit Quality Information
Year one	0		0
Year two	4,480,000		2,144,000
Year three	2,677,000		1,232,000
Year four	2,345,000		1,033,000
Year five	1,213,000		159,000
Prior	275,000		0
Revolving Loans	11,530,000		0
Revolving Loans Converted to Term Loans	0		0
Total	22,520,000		4,568,000
Equipment Financing | Substandard
Credit Quality Information
Year one	0		1,250,000
Year two	1,449,000		8,107,000
Year three	8,522,000		4,105,000
Year four	3,702,000		2,181,000
Year five	1,359,000		2,255,000
Prior	3,103,000		2,259,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	18,135,000		20,157,000
Equipment Financing | Doubtful
Credit Quality Information
Year one	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	15,000		15,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	15,000		15,000
Condominium Association
Credit Quality Information
Year one	404,000		4,460,000
Year two	4,567,000		7,569,000
Year three	7,347,000		9,186,000
Year four	9,475,000		6,686,000
Year five	6,426,000		4,414,000
Prior	12,020,000		9,086,000
Revolving Loans	2,354,000		3,010,000
Revolving Loans Converted to Term Loans	152,000		168,000
Total	42,745,000		44,579,000
Condominium Association | Pass
Credit Quality Information
Year one	404,000		4,460,000
Year two	4,567,000		7,569,000
Year three	7,347,000		9,186,000
Year four	9,475,000		6,686,000
Year five	6,426,000		4,414,000
Prior	12,020,000		9,086,000
Revolving Loans	2,354,000		3,010,000
Revolving Loans Converted to Term Loans	152,000		168,000
Total	42,745,000		44,579,000
Other Consumer
Credit Quality Information
Year one	100,000		408,000
Year two	349,000		200,000
Year three	155,000		516,000
Year four	402,000		5,000
Year five	3,000		21,000
Prior	2,081,000		2,062,000
Revolving Loans	45,392,000		47,191,000
Revolving Loans Converted to Term Loans	2,000		3,000
Total	48,484,000		50,406,000
Current-period gross writeoffs
Year one	6,000		6,000
Year two	0		0
Year three	0		2,000
Year four	0		0
Year five	0		11,000
Prior	6,000		9,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	12,000		28,000
Other Consumer | Pass
Credit Quality Information
Year one	100,000		408,000
Year two	349,000		200,000
Year three	155,000		516,000
Year four	402,000		5,000
Year five	3,000		21,000
Prior	2,081,000		2,062,000
Revolving Loans	45,392,000		47,191,000
Revolving Loans Converted to Term Loans	2,000		3,000
Total	48,484,000		50,406,000
Total
Credit Quality Information
Year one	145,732,000		1,152,179,000
Year two	1,143,068,000		1,667,857,000
Year three	1,667,200,000		1,428,628,000
Year four	1,408,045,000		729,159,000
Year five	709,643,000		772,849,000
Prior	2,589,842,000		1,900,447,000
Revolving Loans	492,434,000		490,921,000
Revolving Loans Converted to Term Loans	64,663,000		72,563,000
Total	8,220,627,000		8,214,603,000
Total | Pass
Credit Quality Information
Year one	145,732,000		1,150,925,000
Year two	1,137,135,000		1,655,189,000
Year three	1,641,488,000		1,409,519,000
Year four	1,387,930,000		720,564,000
Year five	701,845,000		732,312,000
Prior	2,521,958,000		1,868,989,000
Revolving Loans	471,912,000		488,113,000
Revolving Loans Converted to Term Loans	62,153,000		60,948,000
Total	8,070,153,000		8,086,559,000
Total | OAEM
Credit Quality Information
Year one	0		0
Year two	4,480,000		2,144,000
Year three	14,162,000		3,840,000
Year four	4,928,000		6,414,000
Year five	6,329,000		3,234,000
Prior	12,005,000		1,674,000
Revolving Loans	18,550,000		1,827,000
Revolving Loans Converted to Term Loans	0		8,225,000
Total	60,454,000		27,358,000
Total | Substandard
Credit Quality Information
Year one	0		1,254,000
Year two	1,453,000		10,524,000
Year three	11,550,000		15,269,000
Year four	15,187,000		2,181,000
Year five	1,469,000		37,302,000
Prior	55,862,000		27,837,000
Revolving Loans	1,972,000		981,000
Revolving Loans Converted to Term Loans	575,000		3,388,000
Total	88,068,000		98,736,000
Total | Doubtful
Credit Quality Information
Year one	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		1,000
Prior	17,000		1,947,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	1,935,000		2,000
Total	1,952,000		1,950,000
Residential
Credit Quality Information
Year one	16,869,000		87,518,000
Year two	86,882,000		196,669,000
Year three	191,651,000		231,619,000
Year four	237,730,000		133,815,000
Year five	131,406,000		95,091,000
Prior	417,446,000		332,627,000
Revolving Loans	4,153,000		5,026,000
Revolving Loans Converted to Term Loans	437,000		439,000
Total	1,086,574,000		1,082,804,000
Current-period gross writeoffs
Year one			0
Year two			0
Year three			0
Year four			0
Year five			0
Prior			25,000
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total			25,000
Residential | Over 700
Credit Quality Information
Year one	15,975,000		72,022,000
Year two	72,334,000		161,491,000
Year three	159,670,000		210,338,000
Year four	214,374,000		118,752,000
Year five	118,406,000		84,792,000
Prior	340,471,000		261,474,000
Revolving Loans	4,153,000		4,998,000
Revolving Loans Converted to Term Loans	437,000		439,000
Total	925,820,000		914,306,000
Residential | 661 - 700
Credit Quality Information
Year one	894,000		12,200,000
Year two	8,437,000		20,824,000
Year three	18,125,000		11,059,000
Year four	9,168,000		7,970,000
Year five	5,306,000		4,402,000
Prior	27,552,000		24,152,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	69,482,000		80,607,000
Residential | 600 and below
Credit Quality Information
Year one	0		1,943,000
Year two	4,562,000		12,108,000
Year three	11,919,000		7,197,000
Year four	7,310,000		7,093,000
Year five	7,694,000		5,449,000
Prior	26,337,000		23,838,000
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	57,822,000		57,628,000
Residential | Data not available
Credit Quality Information
Year one	0		1,353,000
Year two	1,549,000		2,246,000
Year three	1,937,000		3,025,000
Year four	6,878,000		0
Year five	0		448,000
Prior	23,086,000		23,163,000
Revolving Loans	0		28,000
Revolving Loans Converted to Term Loans	0		0
Total	33,450,000		30,263,000
Home Equity
Credit Quality Information
Year one	1,162,000		6,681,000
Year two	6,334,000		4,260,000
Year three	4,171,000		1,709,000
Year four	1,674,000		805,000
Year five	758,000		1,257,000
Prior	9,145,000		8,484,000
Revolving Loans	317,017,000		313,516,000
Revolving Loans Converted to Term Loans	7,624,000		7,470,000
Total	347,885,000		344,182,000
Home Equity | Over 700
Credit Quality Information
Year one	971,000		5,505,000
Year two	5,419,000		3,807,000
Year three	3,875,000		1,667,000
Year four	1,633,000		769,000
Year five	758,000		1,218,000
Prior	8,224,000		7,366,000
Revolving Loans	278,942,000		272,169,000
Revolving Loans Converted to Term Loans	4,298,000		4,617,000
Total	304,120,000		297,118,000
Home Equity | 661 - 700
Credit Quality Information
Year one	91,000		1,005,000
Year two	747,000		310,000
Year three	156,000		0
Year four	0		36,000
Year five	0		0
Prior	529,000		671,000
Revolving Loans	20,082,000		21,936,000
Revolving Loans Converted to Term Loans	616,000		830,000
Total	22,221,000		24,788,000
Home Equity | 600 and below
Credit Quality Information
Year one	100,000		148,000
Year two	146,000		143,000
Year three	140,000		41,000
Year four	40,000		0
Year five	0		39,000
Prior	348,000		402,000
Revolving Loans	16,138,000		17,349,000
Revolving Loans Converted to Term Loans	2,562,000		2,008,000
Total	19,474,000		20,130,000
Home Equity | Data not available
Credit Quality Information
Year one	0		23,000
Year two	22,000		0
Year three	0		1,000
Year four	1,000		0
Year five	0		0
Prior	44,000		45,000
Revolving Loans	1,855,000		2,062,000
Revolving Loans Converted to Term Loans	148,000		15,000
Total	$ 2,070,000		$ 2,146,000

Allowance for Credit Losses -_4

Allowance for Credit Losses - Schedule of Information Regarding the Aging of Past Due Loans, By Loan Class (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Age analysis of past due loans
Total Loans and Leases	$ 9,655,086	$ 9,641,589
Past Due Greater Than 90 Days and Accruing	363	228
Non-accrual	40,672	43,630
Non-accrual with No Related Allowance	4,275	5,777
Interest income on nonaccrual loans	0
Commercial real estate
Age analysis of past due loans
Total Loans and Leases	3,994,766	4,047,288
Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	1,421,183	1,415,191
Construction
Age analysis of past due loans
Total Loans and Leases	339,290	302,050
Commercial
Age analysis of past due loans
Total Loans and Leases	999,613	984,441
Equipment financing
Age analysis of past due loans
Total Loans and Leases	1,374,546	1,370,648
Condominium association
Age analysis of past due loans
Total Loans and Leases	42,745	44,579
Residential mortgage
Age analysis of past due loans
Total Loans and Leases	1,086,574	1,082,804
Home equity
Age analysis of past due loans
Total Loans and Leases	347,885	344,182
Other consumer
Age analysis of past due loans
Total Loans and Leases	48,484	50,406
Commercial real estate loans
Age analysis of past due loans
Total Loans and Leases	5,755,239	5,764,529
Past Due Greater Than 90 Days and Accruing	175	227
Non-accrual	18,394	19,608
Non-accrual with No Related Allowance	(629)
Non-accrual with No Related Allowance		740
Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	3,994,766	4,047,288
Past Due Greater Than 90 Days and Accruing	175	227
Non-accrual	18,394	19,608
Non-accrual with No Related Allowance	(629)
Non-accrual with No Related Allowance		740
Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	1,421,183	1,415,191
Past Due Greater Than 90 Days and Accruing	0	0
Non-accrual	0	0
Non-accrual with No Related Allowance	0
Non-accrual with No Related Allowance		0
Commercial real estate loans | Construction
Age analysis of past due loans
Total Loans and Leases	339,290	302,050
Past Due Greater Than 90 Days and Accruing	0	0
Non-accrual	0	0
Non-accrual with No Related Allowance	0
Non-accrual with No Related Allowance		0
Commercial loans and leases
Age analysis of past due loans
Total Loans and Leases	2,416,904	2,399,668
Past Due Greater Than 90 Days and Accruing	186	0
Non-accrual	16,764	18,870
Non-accrual with No Related Allowance	2,152	2,474
Commercial loans and leases | Commercial
Age analysis of past due loans
Total Loans and Leases	999,613	984,441
Past Due Greater Than 90 Days and Accruing	36	0
Non-accrual	3,096	3,886
Non-accrual with No Related Allowance	0	0
Commercial loans and leases | Equipment financing
Age analysis of past due loans
Total Loans and Leases	1,374,546	1,370,648
Past Due Greater Than 90 Days and Accruing	150	0
Non-accrual	13,668	14,984
Non-accrual with No Related Allowance	2,152	2,474
Commercial loans and leases | Condominium association
Age analysis of past due loans
Total Loans and Leases	42,745	44,579
Past Due Greater Than 90 Days and Accruing	0	0
Non-accrual	0	0
Non-accrual with No Related Allowance	0	0
Consumer loans
Age analysis of past due loans
Total Loans and Leases	1,482,943	1,477,392
Past Due Greater Than 90 Days and Accruing	2	1
Non-accrual	5,514	5,152
Non-accrual with No Related Allowance	2,752	2,563
Consumer loans | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	1,086,574	1,082,804
Past Due Greater Than 90 Days and Accruing	0	0
Non-accrual	4,563	4,292
Non-accrual with No Related Allowance	2,752	2,563
Consumer loans | Home equity
Age analysis of past due loans
Total Loans and Leases	347,885	344,182
Past Due Greater Than 90 Days and Accruing	2	1
Non-accrual	950	860
Non-accrual with No Related Allowance	0	0
Consumer loans | Other consumer
Age analysis of past due loans
Total Loans and Leases	48,484	50,406
Past Due Greater Than 90 Days and Accruing	0	0
Non-accrual	1	0
Non-accrual with No Related Allowance	0	0
Past Due
Age analysis of past due loans
Total Loans and Leases	63,040	47,636
Past Due | Commercial real estate loans
Age analysis of past due loans
Total Loans and Leases	19,758	20,053
Past Due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	17,340	19,707
Past Due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	0	346
Past Due | Commercial real estate loans | Construction
Age analysis of past due loans
Total Loans and Leases	2,418	0
Past Due | Commercial loans and leases
Age analysis of past due loans
Total Loans and Leases	36,954	21,265
Past Due | Commercial loans and leases | Commercial
Age analysis of past due loans
Total Loans and Leases	4,567	4,712
Past Due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Total Loans and Leases	32,387	16,553
Past Due | Commercial loans and leases | Condominium association
Age analysis of past due loans
Total Loans and Leases	0	0
Past Due | Consumer loans
Age analysis of past due loans
Total Loans and Leases	6,328	6,318
Past Due | Consumer loans | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	4,224	4,597
Past Due | Consumer loans | Home equity
Age analysis of past due loans
Total Loans and Leases	2,103	1,721
Past Due | Consumer loans | Other consumer
Age analysis of past due loans
Total Loans and Leases	1	0
31-60 days past due
Age analysis of past due loans
Total Loans and Leases	24,880	9,179
31-60 days past due | Commercial real estate loans
Age analysis of past due loans
Total Loans and Leases	480	2,924
31-60 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	480	2,578
31-60 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	0	346
31-60 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Total Loans and Leases	0	0
31-60 days past due | Commercial loans and leases
Age analysis of past due loans
Total Loans and Leases	21,535	4,031
31-60 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Total Loans and Leases	879	829
31-60 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Total Loans and Leases	20,656	3,202
31-60 days past due | Commercial loans and leases | Condominium association
Age analysis of past due loans
Total Loans and Leases	0	0
31-60 days past due | Consumer loans
Age analysis of past due loans
Total Loans and Leases	2,865	2,224
31-60 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	1,465	934
31-60 days past due | Consumer loans | Home equity
Age analysis of past due loans
Total Loans and Leases	1,399	1,290
31-60 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Total Loans and Leases	1	0
61-90 days past due
Age analysis of past due loans
Total Loans and Leases	9,748	5,300
61-90 days past due | Commercial real estate loans
Age analysis of past due loans
Total Loans and Leases	4,346	214
61-90 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	1,928	214
61-90 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	0	0
61-90 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Total Loans and Leases	2,418	0
61-90 days past due | Commercial loans and leases
Age analysis of past due loans
Total Loans and Leases	5,017	4,442
61-90 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Total Loans and Leases	639	75
61-90 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Total Loans and Leases	4,378	4,367
61-90 days past due | Commercial loans and leases | Condominium association
Age analysis of past due loans
Total Loans and Leases	0	0
61-90 days past due | Consumer loans
Age analysis of past due loans
Total Loans and Leases	385	644
61-90 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	131	600
61-90 days past due | Consumer loans | Home equity
Age analysis of past due loans
Total Loans and Leases	254	44
61-90 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Total Loans and Leases	0	0
Greater than 90 days past due
Age analysis of past due loans
Total Loans and Leases	28,412	33,157
Greater than 90 days past due | Commercial real estate loans
Age analysis of past due loans
Total Loans and Leases	14,932	16,915
Greater than 90 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	14,932	16,915
Greater than 90 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	0	0
Greater than 90 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Total Loans and Leases	0	0
Greater than 90 days past due | Commercial loans and leases
Age analysis of past due loans
Total Loans and Leases	10,402	12,792
Greater than 90 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Total Loans and Leases	3,049	3,808
Greater than 90 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Total Loans and Leases	7,353	8,984
Greater than 90 days past due | Commercial loans and leases | Condominium association
Age analysis of past due loans
Total Loans and Leases	0	0
Greater than 90 days past due | Consumer loans
Age analysis of past due loans
Total Loans and Leases	3,078	3,450
Greater than 90 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	2,628	3,063
Greater than 90 days past due | Consumer loans | Home equity
Age analysis of past due loans
Total Loans and Leases	450	387
Greater than 90 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Total Loans and Leases	0	0
Current
Age analysis of past due loans
Total Loans and Leases	9,592,046	9,593,953
Current | Commercial real estate loans
Age analysis of past due loans
Total Loans and Leases	5,735,481	5,744,476
Current | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	3,977,426	4,027,581
Current | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	1,421,183	1,414,845
Current | Commercial real estate loans | Construction
Age analysis of past due loans
Total Loans and Leases	336,872	302,050
Current | Commercial loans and leases
Age analysis of past due loans
Total Loans and Leases	2,379,950	2,378,403
Current | Commercial loans and leases | Commercial
Age analysis of past due loans
Total Loans and Leases	995,046	979,729
Current | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Total Loans and Leases	1,342,159	1,354,095
Current | Commercial loans and leases | Condominium association
Age analysis of past due loans
Total Loans and Leases	42,745	44,579
Current | Consumer loans
Age analysis of past due loans
Total Loans and Leases	1,476,615	1,471,074
Current | Consumer loans | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	1,082,350	1,078,207
Current | Consumer loans | Home equity
Age analysis of past due loans
Total Loans and Leases	345,782	342,461
Current | Consumer loans | Other consumer
Age analysis of past due loans
Total Loans and Leases	$ 48,483	$ 50,406

Allowance for Credit Losses -_5

Allowance for Credit Losses - Schedule of the Impaired and Non-Impaired Loans and Leases, By Loan and Leases Class (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Impaired Loans and Leases
Individually evaluated, allowance for loan and lease losses	$ 9,950	$ 9,086
Collectively evaluated, allowance for loan and lease losses	110,174	108,436
Total allowance for loan and lease losses	120,124	117,522	$ 120,865	$ 98,482
Individually evaluated, loans and leases	93,324	96,786
Collectively evaluated, loans and leases	9,561,762	9,544,803
Total	9,655,086	9,641,589
Commercial real estate loans
Impaired Loans and Leases
Individually evaluated, allowance for loan and lease losses	4,722	5,104
Collectively evaluated, allowance for loan and lease losses	78,753	76,306
Total allowance for loan and lease losses	83,475	81,410	82,692	68,154
Individually evaluated, loans and leases	62,394	64,953
Collectively evaluated, loans and leases	5,692,845	5,699,576
Total	5,755,239	5,764,529
Commercial
Impaired Loans and Leases
Individually evaluated, allowance for loan and lease losses	5,228	3,947
Collectively evaluated, allowance for loan and lease losses	25,189	25,610
Total allowance for loan and lease losses	30,417	29,557	32,761	26,604
Individually evaluated, loans and leases	28,178	27,083
Collectively evaluated, loans and leases	2,388,726	2,372,585
Total	2,416,904	2,399,668
Consumer
Impaired Loans and Leases
Individually evaluated, allowance for loan and lease losses	0	35
Collectively evaluated, allowance for loan and lease losses	6,232	6,520
Total allowance for loan and lease losses	6,232	6,555	$ 5,412	$ 3,724
Individually evaluated, loans and leases	2,752	4,750
Collectively evaluated, loans and leases	1,480,191	1,472,642
Total	$ 1,482,943	$ 1,477,392

Allowance for Credit Losses - A

Allowance for Credit Losses - Amortized Cost Basis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) loan	Mar. 31, 2023	Mar. 31, 2023 loan	Mar. 31, 2023 USD ($)	Mar. 31, 2023	Mar. 31, 2023 bank
Commercial And Industrial Relationships
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost	$ 0			$ 0
One Customer Relationships | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1		17
Amortized Cost	$ 30			6,123
% of Total Class of Loans and Leases	0%				0.41%
One Customer Relationships | Commercial And Industrial Relationships | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans	1		17			17
Amortized Cost	$ 30			$ 6,123
% of Total Class of Loans and Leases	0%				0.41%
Term increase from modification	13 months	6 months

Allowance for Credit Losses -_6

Allowance for Credit Losses - Aging Analysis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Paid Off	$ 309	$ 400
Charged Off	5,390	851
Commercial And Industrial Relationships
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost	0	0
Paid Off	0	0
Charged Off	0	0
Commercial And Industrial Relationships | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost	30	6,123
Commercial And Industrial Relationships | 30-60 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost	0	0
Commercial And Industrial Relationships | 61-90 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost	0	0
Commercial And Industrial Relationships | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost	$ 0	$ 0

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Carrying Value of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Goodwill	$ 241,222	$ 160,427
Additions	0	80,795
Balance at end of period	241,222	241,222
Total other intangible assets	22,499	24,207
Total goodwill and other intangible assets	263,721	265,429
Core deposits
Goodwill [Roll Forward]
Total other intangible assets	21,410	23,118
Trade name
Goodwill [Roll Forward]
Total other intangible assets	$ 1,089	$ 1,089

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2013
Core deposits
Indefinite-lived Intangible Assets [Line Items]
Weighted-average amortization period	5 years 8 months 8 days
Trade name
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		$ 1.1

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2024	$ 5,006
Year ending:
2025	5,595
2026	4,323
2027	3,243
2028	2,162
2029	1,081
Thereafter	0
Total	$ 21,410

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Changes in accumulated other comprehensive (loss) income by component, net of tax
Beginning balance	$ 1,198,644	$ 992,125
Other comprehensive income (loss)	(8,863)	8,857
Reclassification adjustment for (income) expense recognized in earnings	820	402
Ending balance	1,194,231	1,165,066
Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive (loss) income by component, net of tax
Beginning balance	(52,798)	(61,947)
Ending balance	(60,841)	(52,688)
Investment Securities Available-for-Sale
Changes in accumulated other comprehensive (loss) income by component, net of tax
Beginning balance	(52,546)	(60,192)
Other comprehensive income (loss)	(6,277)	7,911
Reclassification adjustment for (income) expense recognized in earnings	0	0
Ending balance	(58,823)	(52,281)
Net Change in Fair Value of Cash Flow Hedges
Changes in accumulated other comprehensive (loss) income by component, net of tax
Beginning balance	(1,581)	(2,243)
Other comprehensive income (loss)	(2,586)	946
Reclassification adjustment for (income) expense recognized in earnings	820	402
Ending balance	(3,347)	(895)
Postretirement Benefits
Changes in accumulated other comprehensive (loss) income by component, net of tax
Beginning balance	1,329	488
Other comprehensive income (loss)	0	0
Reclassification adjustment for (income) expense recognized in earnings	0	0
Ending balance	$ 1,329	$ 488

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Hedged Forecasted Transaction Affects Earnings (Details) - Interest rate swaps on loans - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$ 225,000	$ 225,000
Average Maturity	2 years 7 months 24 days	2 years 10 months 24 days
Current Rate Paid	5.33%	5.35%
Received Fixed Swap Rate	3.39%	3.39%
Fair Value	$ (4,876)	$ (2,608)

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Customer Related Derivative Positions (Details) $ in Thousands	Mar. 31, 2024 USD ($) derivative	Dec. 31, 2023 USD ($) derivative
Receive fixed, pay variable
Derivatives and Hedging Activities
Total	$ 1,725,595	$ 1,733,198
Pay fixed, receive variable
Derivatives and Hedging Activities
Total	1,725,595	1,733,198
Risk participation-out agreements
Derivatives and Hedging Activities
Total	527,820	542,387
Risk participation-in agreements
Derivatives and Hedging Activities
Total	103,797	100,313
Foreign exchange contracts | Buys foreign currency, sells U.S. currency
Derivatives and Hedging Activities
Total	2,667	3,262
Foreign exchange contracts | Sells foreign currency, buys U.S. currency
Derivatives and Hedging Activities
Total	$ 3,072	$ 3,895
Derivatives not designed as hedging instruments | Receive fixed, pay variable
Derivatives and Hedging Activities
Number of Positions | derivative	155	153
Notional Amount Maturing, Less than 1 year	$ 31,628	$ 69,135
Notional Amount Maturing, Less than 2 years	148,811	156,567
Notional Amount Maturing, Less than 3 years	136,385	66,330
Notional Amount Maturing, Less than 4 years	189,655	244,615
Notional Amount Maturing, Thereafter	1,219,116	1,196,551
Total	1,725,595	1,733,198
Fair Value	$ 106,420	$ 80,118
Derivatives not designed as hedging instruments | Pay fixed, receive variable
Derivatives and Hedging Activities
Number of Positions | derivative	155	153
Notional Amount Maturing, Less than 1 year	$ 31,628	$ 69,135
Notional Amount Maturing, Less than 2 years	148,811	156,567
Notional Amount Maturing, Less than 3 years	136,385	66,330
Notional Amount Maturing, Less than 4 years	189,655	244,615
Notional Amount Maturing, Thereafter	1,219,116	1,196,551
Total	1,725,595	1,733,198
Fair Value	$ 106,420	$ 80,118
Derivatives not designed as hedging instruments | Risk participation-out agreements
Derivatives and Hedging Activities
Number of Positions | derivative	66	67
Notional Amount Maturing, Less than 1 year	$ 0	$ 22,979
Notional Amount Maturing, Less than 2 years	33,384	33,409
Notional Amount Maturing, Less than 3 years	32,359	6,038
Notional Amount Maturing, Less than 4 years	43,665	64,875
Notional Amount Maturing, Thereafter	418,412	415,086
Total	527,820	542,387
Fair Value	$ 844	$ 1,238
Derivatives not designed as hedging instruments | Risk participation-in agreements
Derivatives and Hedging Activities
Number of Positions | derivative	10	9
Notional Amount Maturing, Less than 1 year	$ 0	$ 0
Notional Amount Maturing, Less than 2 years	0	0
Notional Amount Maturing, Less than 3 years	26,556	23,155
Notional Amount Maturing, Less than 4 years	0	3,577
Notional Amount Maturing, Thereafter	77,241	73,581
Total	103,797	100,313
Fair Value	$ 233	$ 310
Derivatives not designed as hedging instruments | Foreign exchange contracts | Buys foreign currency, sells U.S. currency
Derivatives and Hedging Activities
Number of Positions | derivative	12	23
Notional Amount Maturing, Less than 1 year	$ 2,667	$ 3,262
Notional Amount Maturing, Less than 2 years	0	0
Notional Amount Maturing, Less than 3 years	0	0
Notional Amount Maturing, Less than 4 years	0	0
Notional Amount Maturing, Thereafter	0	0
Total	2,667	3,262
Fair Value	$ 209	$ 139
Derivatives not designed as hedging instruments | Foreign exchange contracts | Sells foreign currency, buys U.S. currency
Derivatives and Hedging Activities
Number of Positions | derivative	14	28
Notional Amount Maturing, Less than 1 year	$ 3,072	$ 3,895
Notional Amount Maturing, Less than 2 years	0	0
Notional Amount Maturing, Less than 3 years	0	0
Notional Amount Maturing, Less than 4 years	0	0
Notional Amount Maturing, Thereafter	0	0
Total	3,072	3,895
Fair Value	$ 211	$ 132

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Narrative (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Collateral posted	$ 0	$ 2,400,000

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities - Offsetting of Derivatives and Amounts Subject to Master Netting Agreements (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Asset derivatives
Assets, Gross Amounts Recognized	$ 115,442	$ 101,487
Assets, Gross Amounts Offset in the Statement of Financial Position	0	0
Assets, Net Amounts Presented in the Statement of Financial Position	115,442	101,487
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	0
Assets, Net Amount	115,442	101,487
Liability derivatives
Liabilities, Gross Amounts Recognized	119,709	103,160
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	119,709	103,160
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	20,353
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	860	61,153
Liabilities, Net Amount	118,849	21,654
Interest rate derivatives
Asset derivatives
Assets, Gross Amounts Recognized		234
Assets, Gross Amounts Offset in the Statement of Financial Position		0
Assets, Net Amounts Presented in the Statement of Financial Position		234
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged		0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged		0
Assets, Net Amount		234
Loan level derivatives
Asset derivatives
Assets, Gross Amounts Recognized		99,876
Assets, Gross Amounts Offset in the Statement of Financial Position		0
Assets, Net Amounts Presented in the Statement of Financial Position		99,876
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged		0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged		0
Assets, Net Amount		99,876
Liability derivatives
Liabilities, Gross Amounts Recognized		99,876
Liabilities, Gross Amounts Offset in the Statement of Financial Position		0
Liabilities, Net Amounts Presented in the Statement of Financial Position		99,876
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged		20,353
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged		61,153
Liabilities, Net Amount		18,370
Risk participation-out agreements
Asset derivatives
Assets, Gross Amounts Recognized		1,238
Assets, Gross Amounts Offset in the Statement of Financial Position		0
Assets, Net Amounts Presented in the Statement of Financial Position		1,238
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged		0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged		0
Assets, Net Amount		1,238
Risk participation-in agreements
Liability derivatives
Liabilities, Gross Amounts Recognized		310
Liabilities, Gross Amounts Offset in the Statement of Financial Position		0
Liabilities, Net Amounts Presented in the Statement of Financial Position		310
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged		0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged		0
Liabilities, Net Amount		310
Foreign exchange contracts
Asset derivatives
Assets, Gross Amounts Recognized		139
Assets, Gross Amounts Offset in the Statement of Financial Position		0
Assets, Net Amounts Presented in the Statement of Financial Position		139
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged		0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged		0
Assets, Net Amount		139
Liability derivatives
Liabilities, Gross Amounts Recognized		132
Liabilities, Gross Amounts Offset in the Statement of Financial Position		0
Liabilities, Net Amounts Presented in the Statement of Financial Position		132
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged		0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged		0
Liabilities, Net Amount		132
Designated as hedging instrument | Interest rate derivatives
Asset derivatives
Assets, Gross Amounts Recognized	0
Assets, Gross Amounts Offset in the Statement of Financial Position	0
Assets, Net Amounts Presented in the Statement of Financial Position	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0
Assets, Net Amount	0
Liability derivatives
Liabilities, Gross Amounts Recognized	4,876	2,842
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	4,876	2,842
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	0
Liabilities, Net Amount	4,876	$ 2,842
Derivatives not designed as hedging instruments | Loan level derivatives
Asset derivatives
Assets, Gross Amounts Recognized	114,389
Assets, Gross Amounts Offset in the Statement of Financial Position	0
Assets, Net Amounts Presented in the Statement of Financial Position	114,389
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0
Assets, Net Amount	114,389
Liability derivatives
Liabilities, Gross Amounts Recognized	114,389
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	114,389
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	860
Liabilities, Net Amount	113,529
Derivatives not designed as hedging instruments | Risk participation-out agreements
Asset derivatives
Assets, Gross Amounts Recognized	844
Assets, Gross Amounts Offset in the Statement of Financial Position	0
Assets, Net Amounts Presented in the Statement of Financial Position	844
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0
Assets, Net Amount	844
Derivatives not designed as hedging instruments | Risk participation-in agreements
Liability derivatives
Liabilities, Gross Amounts Recognized	233
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	233
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0
Liabilities, Net Amount	233
Derivatives not designed as hedging instruments | Foreign exchange contracts
Asset derivatives
Assets, Gross Amounts Recognized	209
Assets, Gross Amounts Offset in the Statement of Financial Position	0
Assets, Net Amounts Presented in the Statement of Financial Position	209
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0
Assets, Net Amount	209
Liability derivatives
Liabilities, Gross Amounts Recognized	211
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	211
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0
Liabilities, Net Amount	$ 211

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities - Schedule of Gain (Loss) of Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives designated as hedges	$ (4,876)	$ (1,430)
(Loss) gain in OCI on derivatives (effective portion), net of tax	(3,347)	(895)
Gain (loss) reclassified from OCI into interest income or interest expense (effective portion)	$ (1,102)	$ (543)

Stock Based Compensation (Detai

Stock Based Compensation (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) plan shares	Mar. 31, 2023 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based compensation plans | plan	1
Shares issued upon satisfaction of required conditions of the Plans (in shares) | shares	0	0
Share-based compensation expense | $	$ 1.1	$ 0.9
Vesting equally over three years | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares in tranche	50%
Award vesting period	3 years
Vesting, first anniversary | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	33.33%
Vesting, second anniversary | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	33.33%
Vesting, third anniversary | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	33.33%
Vesting after achievement of performance targets | Performance-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares in tranche	50%
Award vesting period	3 years

Earnings per Share ("EPS") (Det

Earnings per Share ("EPS") (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income	$ 14,665	$ 7,560
Denominator:
Weighted average shares outstanding (in shares)	88,894,577	86,563,641
Effect of dilutive securities (in shares)	286,931	274,165
Adjusted weighted average shares outstanding (in shares)	89,181,508	86,837,806
Basic EPS (in dollars per share)	$ 0.16	$ 0.09
Diluted EPS (in dollars per share)	$ 0.16	$ 0.09

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Carrying and Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets:
Investment securities available-for-sale	$ 865,798	$ 916,601
Derivatives	115,442	101,487
Liabilities:
Derivatives	119,709	103,160
Investment securities available for sale | Recurring basis
Assets:
Investment securities available-for-sale	865,798	916,601
Investment securities available for sale | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
Investment securities available for sale | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	847,708	898,698
Investment securities available for sale | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	18,090	17,903
GSE debentures
Assets:
Investment securities available-for-sale	194,334	201,127
GSE debentures | Recurring basis
Assets:
Investment securities available-for-sale	194,334	201,127
GSE debentures | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
GSE debentures | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	194,334	201,127
GSE debentures | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	0	0
GSE CMOs
Assets:
Investment securities available-for-sale	59,816	61,617
GSE CMOs | Recurring basis
Assets:
Investment securities available-for-sale	59,816	61,617
GSE CMOs | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
GSE CMOs | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	59,816	61,617
GSE CMOs | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	0	0
GSE MBSs
Assets:
Investment securities available-for-sale	162,024	169,997
GSE MBSs | Recurring basis
Assets:
Investment securities available-for-sale	162,024	169,997
GSE MBSs | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
GSE MBSs | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	162,024	169,997
GSE MBSs | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	0	0
Municipal obligations
Assets:
Investment securities available-for-sale	19,040	18,922
Municipal obligations | Recurring basis
Assets:
Investment securities available-for-sale	19,040	18,922
Municipal obligations | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
Municipal obligations | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	3,318	3,398
Municipal obligations | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	15,722	15,524
Corporate debt obligations
Assets:
Investment securities available-for-sale	17,774	19,716
Corporate debt obligations | Recurring basis
Assets:
Investment securities available-for-sale	17,774	19,716
Corporate debt obligations | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
Corporate debt obligations | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	15,406	17,337
Corporate debt obligations | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	2,368	2,379
U.S. Treasury bonds
Assets:
Investment securities available-for-sale	412,300	444,700
U.S. Treasury bonds | Recurring basis
Assets:
Investment securities available-for-sale	412,321	444,737
U.S. Treasury bonds | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
U.S. Treasury bonds | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	412,321	444,737
U.S. Treasury bonds | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	0	0
Foreign government obligations
Assets:
Investment securities available-for-sale	489	485
Foreign government obligations | Recurring basis
Assets:
Investment securities available-for-sale	489	485
Foreign government obligations | Recurring basis | Level 1
Assets:
Investment securities available-for-sale	0	0
Foreign government obligations | Recurring basis | Level 2
Assets:
Investment securities available-for-sale	489	485
Foreign government obligations | Recurring basis | Level 3
Assets:
Investment securities available-for-sale	0	0
Interest rate derivatives | Recurring basis
Assets:
Derivatives	0	234
Liabilities:
Derivatives	4,876	2,842
Interest rate derivatives | Recurring basis | Level 1
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Interest rate derivatives | Recurring basis | Level 2
Assets:
Derivatives	0	234
Liabilities:
Derivatives	4,876	2,842
Interest rate derivatives | Recurring basis | Level 3
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Loan level derivatives | Recurring basis
Assets:
Derivatives	114,389	99,876
Liabilities:
Derivatives	114,389	99,876
Loan level derivatives | Recurring basis | Level 1
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Loan level derivatives | Recurring basis | Level 2
Assets:
Derivatives	114,389	99,876
Liabilities:
Derivatives	114,389	99,876
Loan level derivatives | Recurring basis | Level 3
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Risk participation-out agreements | Recurring basis
Assets:
Derivatives	844	1,238
Risk participation-out agreements | Recurring basis | Level 1
Assets:
Derivatives	0	0
Risk participation-out agreements | Recurring basis | Level 2
Assets:
Derivatives	844	1,238
Risk participation-out agreements | Recurring basis | Level 3
Assets:
Derivatives	0	0
Risk participation-in agreements | Recurring basis
Liabilities:
Derivatives	233	310
Risk participation-in agreements | Recurring basis | Level 1
Liabilities:
Derivatives	0	0
Risk participation-in agreements | Recurring basis | Level 2
Liabilities:
Derivatives	233	310
Risk participation-in agreements | Recurring basis | Level 3
Liabilities:
Derivatives	0	0
Foreign exchange contracts | Recurring basis
Assets:
Derivatives	209	139
Liabilities:
Derivatives	211	132
Foreign exchange contracts | Recurring basis | Level 1
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Foreign exchange contracts | Recurring basis | Level 2
Assets:
Derivatives	209	139
Liabilities:
Derivatives	211	132
Foreign exchange contracts | Recurring basis | Level 3
Assets:
Derivatives	0	0
Liabilities:
Derivatives	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Fair value of assets and liabilities
Estimated Fair Value	$ 865,798	$ 916,601
Changes in generic pricing of securities period one, considered for analyzing changes in prices obtained from pricing service	15 years
Changes in generic pricing of securities period two, considered for analyzing changes in prices obtained from pricing service	30 years
Recurring basis | Investment securities available for sale
Fair value of assets and liabilities
Estimated Fair Value	$ 865,798	916,601
Level 3 | Recurring basis | Investment securities available for sale
Fair value of assets and liabilities
Estimated Fair Value	$ 18,090	$ 17,903

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Information About Significant Unobservable Inputs (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Quantitative information for Level 3 Fair Value Measurements Assets
Estimated Fair Value	$ 865,798	$ 916,601
Municipal obligations
Quantitative information for Level 3 Fair Value Measurements Assets
Estimated Fair Value	19,040	18,922
Corporate debt obligations
Quantitative information for Level 3 Fair Value Measurements Assets
Estimated Fair Value	17,774	$ 19,716
Level 3 | Valuation Technique, Discounted Cash Flow | Municipal obligations
Quantitative information for Level 3 Fair Value Measurements Assets
Estimated Fair Value	15,722
Level 3 | Observable bids | Corporate debt obligations
Quantitative information for Level 3 Fair Value Measurements Assets
Estimated Fair Value	$ 2,368
Level 3 | Minimum | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate | Municipal obligations
Quantitative information for Level 3 Fair Value Measurements Assets
Debt securities, measurement input	0
Level 3 | Maximum | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate | Municipal obligations
Quantitative information for Level 3 Fair Value Measurements Assets
Debt securities, measurement input	0.0335
Level 3 | Weighted Average | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate | Municipal obligations
Quantitative information for Level 3 Fair Value Measurements Assets
Debt securities, measurement input	0.0139

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Changes in Estimated Fair Value For All Assets and Liabilities Measured at Estimated Fair Value (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Municipal obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 15,524
Purchases	1,392
Included in comprehensive income	(80)
Transfers in	0
Transfers out	0
Sales	0
Maturities, calls, and paydowns	(1,114)
Ending balance	15,722
Corporate debt obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,379
Purchases	0
Included in comprehensive income	(16)
Transfers in	0
Transfers out	0
Sales	0
Maturities, calls, and paydowns	5
Ending balance	$ 2,368

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis (Details) - Nonrecurring basis - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	$ 21,448	$ 18,414
Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	1,037	914
Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	20,411	17,500
Collateral-dependent impaired loans and leases
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	19,631	16,720
Collateral-dependent impaired loans and leases | Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Collateral-dependent impaired loans and leases | Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Collateral-dependent impaired loans and leases | Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	19,631	16,720
OREO
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	780	780
OREO | Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
OREO | Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
OREO | Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	780	780
Repossessed assets
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	1,037	914
Repossessed assets | Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Repossessed assets | Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	1,037	914
Repossessed assets | Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	$ 0	$ 0

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Quantitative Information for Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Discount for costs to sell | Minimum
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread	0%
Discount for costs to sell | Maximum
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread	10%
Appraisal Adjustments | Minimum
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread	0%
Appraisal Adjustments | Maximum
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread	15%
Collateral-dependent impaired loans and leases | Recurring basis | Appraisal of collateral
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	$ 19,631	$ 16,720
OREO | Recurring basis | Appraisal of collateral
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	$ 780	$ 780

Fair Value of Financial Instr_9

Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial assets:
Loans held-for-sale	$ 6,717	$ 0
Loans and leases, net	9,534,962	9,524,067
Financial liabilities:
Borrowed funds	127,505	69,256
Level 1
Financial assets:
Loans held-for-sale	0
Loans and leases, net	0	0
Financial liabilities:
Certificates of deposits and brokered deposits	0	0
Borrowed funds	0	0
Level 2
Financial assets:
Loans held-for-sale	6,717
Loans and leases, net	0	0
Financial liabilities:
Certificates of deposits and brokered deposits	2,631,227	2,443,772
Borrowed funds	1,359,144	1,375,506
Level 3
Financial assets:
Loans held-for-sale	0
Loans and leases, net	9,154,363	9,230,864
Financial liabilities:
Certificates of deposits and brokered deposits	0	0
Borrowed funds	0	0
Carrying Value
Financial assets:
Loans held-for-sale	6,717
Loans and leases, net	9,534,962	9,524,067
Financial liabilities:
Certificates of deposits and brokered deposits	2,641,072	2,456,028
Borrowed funds	1,361,881	1,376,670
Estimated Fair Value
Financial assets:
Loans held-for-sale	6,717
Loans and leases, net	9,154,363	9,230,864
Financial liabilities:
Certificates of deposits and brokered deposits	2,631,227	2,443,772
Borrowed funds	$ 1,359,144	$ 1,375,506

Commitments and Contingencies -

Commitments and Contingencies - Financial Instrument with Off-balance-sheet Risk (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Loan commitments
Unadvanced portion of loans and leases	$ 1,147,990	$ 1,208,553
Unused lines of credit:
Home equity	768,814	762,235
Other consumer	116,661	114,816
Other commercial	501	475
Unused letters of credit:
Financial standby letters of credit	11,221	8,221
Performance standby letters of credit	29,215	29,187
Commercial and similar letters of credit	2,792	3,278
Interest rate derivatives
Unused letters of credit:
Notional Amount	225,000	225,000
Receive fixed, pay variable
Unused letters of credit:
Notional Amount	1,725,595	1,733,198
Pay fixed, receive variable
Unused letters of credit:
Notional Amount	1,725,595	1,733,198
Risk participation-out agreements
Unused letters of credit:
Notional Amount	527,820	542,387
Risk participation-in agreements
Unused letters of credit:
Notional Amount	103,797	100,313
Foreign exchange contracts | Buys foreign currency, sells U.S. currency
Unused letters of credit:
Notional Amount	2,667	3,262
Foreign exchange contracts | Sells foreign currency, buys U.S. currency
Unused letters of credit:
Notional Amount	3,072	3,895
Commercial real estate
Loan commitments
Commitments to originate loans and leases	52,953	88,435
Commercial
Loan commitments
Commitments to originate loans and leases	173,649	279,001
Residential mortgage
Loan commitments
Commitments to originate loans and leases	$ 25,760	$ 26,170

Commitments and Contingencies_2

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Lessee, Lease, Description [Line Items]
Real estate taxes	$ 0.6	$ 0.7
Expenditures	0.1	0.1
Total operating rental expense	$ 2.3	$ 2.1
Minimum
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term	20 years

Commitments and Contingencies_3

Commitments and Contingencies - Lease Costs, Cash Flows and Balance Sheet Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Operating lease cost	$ 2,283	$ 2,112
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	2,347	2,353
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases assets	3,632	8,880
Operating leases liabilities	3,632	$ 10,697
Supplemental balance sheet information related to leases was as follows:
Operating lease right-of-use assets	33,133		$ 30,863
Operating lease liabilities	$ 34,235		$ 31,998
Weighted Average Remaining Lease Term
Operating leases	8 years 9 months 3 days		8 years 10 months 13 days
Weighted Average Discount Rate
Operating leases	4%		4%

Commitments and Contingencies_4

Commitments and Contingencies - Maturities of Operating Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2024	$ 6,202
2025	7,460
2026	6,123
2027	5,134
2028	3,663
2029	2,164
Thereafter	9,184
Total	39,930
Less imputed interest	(5,695)
Present value of lease liability	$ 34,235	$ 31,998