Loans (Summary of Loans) (Details) - USD ($) $ in Thousands		Mar. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[1]	$ 5,096,210	$ 5,137,838
Basis adjustment associated with fair value hedges		(699)	(1,481)
Net unamortized loan origination costs		11,300	10,900
Net unamortized premiums on purchased loans		233	242
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[2]	2,134,107	2,154,504
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[3]	535,030	542,474
Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		2,669,137	2,696,978
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[4]	2,113,307	2,126,171
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		296,563	297,119
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[5]	17,203	17,570
Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		$ 313,766	$ 314,689

[1] Includes net unamortized loan origination costs of $11.3 million and $10.9 million, respectively, at March 31, 2025 and December 31, 2024 and net unamortized premiums on loans purchased from and serviced by other financial institutions of $233 thousand and $242 thousand, respectively, at March 31, 2025 and December 31, 2024.

[2] 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.

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

[4] Residential real estate consists of mortgage and homeowner construction loans secured by one- to four-family residential properties. Also, includes negative basis adjustments associated with fair value hedges of $699 thousand and $1.5 million, respectively, at March 31, 2025 and December 31, 2024. See Note 7 for additional disclosure.

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