Loans (Summary of Loans) (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[1]	$ 5,134,388	$ 5,137,838
Basis adjustment associated with fair value hedges		(335)	(1,481)	[2]
Net unamortized loan origination costs		11,000	10,900
Net unamortized premiums on purchased loans		198	242
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[3]	2,183,985	2,154,504
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[4]	564,082	542,474
Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		2,748,067	2,696,978
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[5]	2,050,399	2,126,171
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		318,862	297,119
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[6]	17,060	17,570
Total Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		$ 335,922	$ 314,689

[1] Includes net unamortized loan origination costs of $11.0 million and $10.9 million, respectively, at December 31, 2025 and 2024 and net unamortized premiums on loans purchased from and serviced by other financial institutions of $198 thousand and $242 thousand, respectively, at December 31, 2025 and 2024.

[2] The estimated fair value excludes a $1.5 million negative basis adjustment associated with fair value hedges. See Note 9 for additional disclosure.

[3] CRE consists of commercial mortgages primarily secured by non-owner occupied income-producing property, as well as construction and development loans. Construction and development loans are made to businesses for land development or the on-site construction of industrial, commercial, or residential buildings.

[4] C&I consists of loans to businesses and individuals, a portion of which are fully or partially collateralized by real estate.

[5] Residential real estate consists of mortgage and homeowner construction loans secured by one- to four-family residential properties. Also, includes a negative basis adjustment associated with fair value hedges of $335 thousand and $1.5 million, respectively, at December 31, 2025 and 2024. See Note 9 for additional disclosure.

[6] Other consists of loans to individuals secured by general aviation aircraft and other personal installment loans.