Consolidated Balance Sheets (Unaudited) - USD ($)		Sep. 30, 2025		Dec. 31, 2024
Assets
Cash and due from banks		$ 203,388,000		$ 187,849,000
Interest-earning deposits with banks		707,408,000		32,041,000
Securities
Trading		4,611,000		4,245,000
Equity		21,567,000		21,204,000
Debt Securities, Available-for-Sale, Excluding Accrued Interest		1,941,220,000		1,250,944,000
Held to maturity (fair value $1,260,752 and $1,291,801)		1,357,617,000		1,434,956,000
Total securities		3,325,015,000		2,711,349,000
Loans held for sale (at fair value)		17,052,000		7,271,000
Loans
Total loans	[1]	18,452,443,000		14,508,378,000	[2]
Less: allowance for credit losses		(190,476,000)	[3]	(169,984,000)
Net loans		18,261,967,000		14,338,394,000
Federal Home Loan Bank stock		21,835,000		31,573,000
Bank premises and equipment, net		221,165,000		193,320,000
Goodwill		1,083,374,000		985,072,000
Other intangible assets		141,732,000		12,284,000
Cash surrender value of life insurance policies		376,163,000		303,965,000
Other assets		634,140,000		570,447,000
Total assets		24,993,239,000		19,373,565,000
Deposits
Non-interest-bearing demand deposits		5,635,911,000		4,390,703,000
Savings and interest checking accounts		7,111,570,000		5,207,548,000
Money market		4,128,400,000		2,960,381,000
Time certificates of deposit		3,419,988,000		2,747,346,000
Total deposits		20,295,869,000		15,305,978,000
Borrowings
Federal Home Loan Bank and other borrowings		416,240,000		638,514,000
Junior Subordinated Notes		62,862,000		62,860,000
Subordinated Debt		296,275,000		0
Total borrowings		775,377,000		701,374,000
Other liabilities		375,106,000		373,093,000
Total liabilities		21,446,352,000		16,380,445,000
Commitments and contingencies		0		0
Stockholders' equity
Preferred stock, $0.01 par value, authorized: 1,000,000 shares, outstanding: none		0		0
Common stock, $0.01 par value, authorized: 75,000,000 shares, issued and outstanding: 49,787,305 shares at September 30, 2025 and 42,500,611 shares at December 31, 2024 (includes 260,511 and 199,410 shares of unvested participating restricted stock awards, respectively)		495,000		423,000
Value of shares held in rabbi trust at cost: 77,118 shares at September 30, 2025 and 78,088 shares at December 31, 2024		(3,505,000)		(3,383,000)
Deferred compensation and other retirement benefit obligations		3,505,000		3,383,000
Additional paid in capital		2,371,111,000		1,909,980,000
Retained earnings		1,222,843,000		1,172,724,000
Accumulated other comprehensive loss, net of tax		(47,562,000)		(90,007,000)
Total stockholders’ equity		3,546,887,000		2,993,120,000
Total liabilities and stockholders’ equity		24,993,239,000		19,373,565,000
Commercial And Industrial [Member]
Loans
Total loans	[1],[4]	4,532,294,000		3,246,455,000	[2]
Less: allowance for credit losses		(54,482,000)	[3]	(30,799,000)
Commercial Real Estate [Member]
Loans
Total loans	[1],[4]	8,241,458,000		6,839,705,000	[2]
Less: allowance for credit losses		(77,083,000)	[3]	(93,718,000)
Construction Loans [Member]
Loans
Total loans	[1]	1,439,876,000		782,078,000	[2]
Less: allowance for credit losses		(15,933,000)	[3]	(8,166,000)
Residential Real Estate [Member]
Loans
Total loans	[1]	2,917,101,000		2,460,600,000	[2]
Less: allowance for credit losses		(29,890,000)	[3]	(25,238,000)
Home Equity Loan [Member]
Loans
Total loans	[1]	1,284,139,000		1,140,168,000	[2]
Less: allowance for credit losses		(12,187,000)	[3]	(11,007,000)
Consumer Portfolio Segment [Member]
Loans
Total loans	[5]	37,575,000		39,372,000	[2]
Less: allowance for credit losses		(901,000)	[3]	(1,056,000)
Senior Lien [Member] | Home Equity Loan [Member]
Loans
Total loans		511,482,000		490,115,000
Junior Lien [Member] | Home Equity Loan [Member]
Loans
Total loans		$ 772,657,000		$ 650,053,000

[1] (2)Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan.

[2] The amount of net deferred fees/costs on originated loans included in the ending balance was $7.2 million and $6.1 million at September 30, 2025 and December 31, 2024, respectively. Net unamortized discounts on acquired loans included in the ending balance were $163.1 million and $8.1 million at September 30, 2025 and December 31, 2024, respectively.

[3] Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $70.8 million and $55.3 million as of September 30, 2025 and September 30, 2024, respectively.

[4] (1)Commercial and industrial and commercial real estate balances as of September 30, 2025 presented above vary from amounts previously reported in the Company’s third quarter 2025 earnings release. These reported amounts reflect a reclassification of commercial and industrial loan balances to the commercial real estate category based upon further review of loan classifications subsequent to the system conversion of Enterprise Bancorp, Inc., parent of Enterprise Bank and Trust Company (collectively “Enterprise”). Reported amounts throughout this Form 10-Q are reflective of this reclassification, where applicable.

[5] Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances. (2)The amount of net deferred fees/costs on originated loans included in the ending balance was $7.2 million and $6.1 million at September 30, 2025 and December 31, 2024, respectively. Net unamortized discounts on acquired loans included in the ending balance were $163.1 million and $8.1 million at September 30, 2025 and December 31, 2024, respectively.