Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands		Jun. 30, 2026	Dec. 31, 2025
Available-for-Sale, Amortized Cost		$ 2,146,923	$ 2,051,822
Held to Maturity, Fair Value, Total		$ 1,117,644	$ 1,190,733
Preferred Stock, par value		$ 0.01	$ 0.01
Preferred Stock, Shares Authorized		1,000,000	1,000,000
Preferred Stock, shares outstanding		0	0
Common Stock, par value		$ 0.01	$ 0.01
Common Stock, shares authorized		75,000,000	75,000,000
Common Stock, Shares, Outstanding		47,618,626	49,243,813
Common Stock, Shares, Issued		47,618,626	49,243,813
Common Stock, unvested restricted Stock awards		283,135	254,359
Shares Held in Rabbi Trust		73,303	75,247
Total loans	[1],[2]	$ 18,394,327	$ 18,503,777
Long-Term Line of Credit		124,984	49,953
Line of Credit
Unamortized debt issuance expense		16	47
Residential Real Estate [Member]
Total loans	[1],[2]	2,870,277	2,873,443
Home Equity Loan [Member]
Total loans	[1],[2]	1,342,797	1,297,662
Junior Subordinated Debt [Member]
Unamortized debt issuance expense		24	26
Subordinated Debt [Member]
Unamortized debt issuance expense		$ 3,102	$ 3,517

[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.