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

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

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