Consolidated Balance Sheets (Unaudited)	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($) $ / shares		Jun. 30, 2026 USD ($) $ / shares		Dec. 31, 2025 USD ($)
Assets
Cash and due from banks	$ 251,971,000		$ 251,971,000		$ 229,770,000
Interest-earning deposits with banks	749,255,000		749,255,000		542,132,000
Securities
Trading	4,835,000		4,835,000		4,720,000
Equity	21,602,000		21,602,000		21,581,000
Debt Securities, Available-for-Sale, Excluding Accrued Interest	2,075,972,000		2,075,972,000		2,004,247,000
Held to maturity (fair value $1,117,644 and $1,190,733)	1,210,310,000		1,210,310,000		1,279,027,000
Total securities	3,312,719,000		3,312,719,000		3,309,575,000
Loans held for sale (at fair value)	21,982,000		21,982,000		35,909,000
Loans
Total loans	18,394,327,000	[1],[2]	18,394,327,000	[1],[2]	18,503,777,000	[1],[2]
Less: allowance for credit losses	(195,899,000)	[3]	(195,899,000)	[3]	(189,877,000)
Net loans	18,198,428,000		18,198,428,000		18,313,900,000
Federal Home Loan Bank stock	13,631,000		13,631,000		21,835,000
Bank premises and equipment, net	217,877,000		217,877,000		218,190,000
Goodwill	1,090,610,000		1,090,610,000		1,090,610,000
Other intangible assets	119,896,000		119,896,000		133,576,000
Cash surrender value of life insurance policies	381,230,000		381,230,000		378,576,000
Other assets	616,295,000		616,295,000		638,823,000
Total assets	24,973,894,000		24,973,894,000		24,912,896,000
Deposits
Non-interest-bearing demand deposits	5,709,647,000		5,709,647,000		5,600,955,000
Savings and interest checking accounts	6,503,521,000		6,503,521,000		6,482,970,000
Money market	4,929,495,000		4,929,495,000		4,774,645,000
Time certificates of deposit	3,249,455,000		3,249,455,000		3,268,220,000
Total deposits	20,392,118,000		20,392,118,000		20,126,790,000
Borrowings
Federal Home Loan Bank and other borrowings	216,719,000		216,719,000		416,549,000
Long-Term Line of Credit	124,984,000		124,984,000		49,953,000
Junior Subordinated Notes	62,864,000		62,864,000		62,862,000
Subordinated Debt	296,898,000		296,898,000		296,483,000
Total borrowings	701,465,000		701,465,000		825,847,000
Other liabilities	367,948,000		367,948,000		394,531,000
Total liabilities	21,461,531,000		21,461,531,000		21,347,168,000
Commitments and contingencies	0		0		0
Stockholders’ equity
Preferred stock, $0.01 par value, authorized: 1,000,000 shares, outstanding: none	0		0		0
Common stock, $0.01 par value, authorized: 75,000,000 shares, issued and outstanding: 47,618,626 shares at June 30, 2026 and 49,243,813 shares at December 31, 2025 (includes 283,135 and 254,359 shares of unvested participating restricted stock awards, respectively)	473,000		473,000		490,000
Value of shares held in rabbi trust at cost: 73,303 shares at June 30, 2026 and 75,247 shares at December 31, 2025	(3,508,000)		(3,508,000)		(3,452,000)
Deferred compensation and other retirement benefit obligations	3,508,000		3,508,000		3,452,000
Additional paid in capital	2,201,250,000		2,201,250,000		2,335,879,000
Retained earnings	1,369,306,000		1,369,306,000		1,269,113,000
Accumulated other comprehensive loss, net of tax	(58,666,000)		(58,666,000)		(39,754,000)
Total stockholders’ equity	3,512,363,000		3,512,363,000		3,565,728,000
Total liabilities and stockholders’ equity	$ 24,973,894,000		$ 24,973,894,000		24,912,896,000
Common Stock, Dividends, Per Share, Cash Paid | $ / shares	$ 0.64		$ 1.28
Commercial And Industrial [Member]
Loans
Total loans	$ 4,730,827,000	[1],[2],[4]	$ 4,730,827,000	[1],[2],[4]	4,611,789,000	[1],[2],[4]
Less: allowance for credit losses	(56,880,000)	[3]	(56,880,000)	[3]	(47,976,000)
Commercial Real Estate [Member]
Loans
Total loans	7,944,099,000	[1],[2],[4]	7,944,099,000	[1],[2],[4]	8,275,408,000	[1],[2],[4]
Less: allowance for credit losses	(78,879,000)	[3]	(78,879,000)	[3]	(84,916,000)
Construction Loans [Member]
Loans
Total loans	1,464,449,000	[1],[2]	1,464,449,000	[1],[2]	1,399,193,000	[1],[2]
Less: allowance for credit losses	(13,871,000)	[3]	(13,871,000)	[3]	(14,254,000)
Residential Real Estate [Member]
Loans
Total loans	2,870,277,000	[1],[2]	2,870,277,000	[1],[2]	2,873,443,000	[1],[2]
Less: allowance for credit losses	(31,543,000)	[3]	(31,543,000)	[3]	(29,254,000)
Home Equity Loan [Member]
Loans
Total loans	1,342,797,000	[1],[2]	1,342,797,000	[1],[2]	1,297,662,000	[1],[2]
Less: allowance for credit losses	(13,562,000)	[3]	(13,562,000)	[3]	(12,376,000)
Consumer Portfolio Segment [Member]
Loans
Total loans	41,878,000	[2],[5]	41,878,000	[2],[5]	46,282,000	[2],[5]
Less: allowance for credit losses	$ (1,164,000)	[3]	$ (1,164,000)	[3]	$ (1,101,000)

[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 $9.6 million and $7.7 million at June 30, 2026 and December 31, 2025, respectively. Net unamortized discounts on acquired loans included in the ending balance were $143.5 million and $157.0 million at June 30, 2026 and December 31, 2025, respectively.

[3] Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $68.3 million and $54.5 million as of June 30, 2026 and June 30, 2025, respectively.

[4]

[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 $9.6 million and $7.7 million at June 30, 2026 and December 31, 2025, respectively. Net unamortized discounts on acquired loans included in the ending balance were $143.5 million and $157.0 million at June 30, 2026 and December 31, 2025, respectively.