Loans (Collateral dependent individually analyzed loans) (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Total loans	[1]	$ 5,134,388	$ 5,137,838
Related allowance on collateral dependent individually analyzed loans		37,236	41,960
Commercial real estate
Total loans	[2]	2,183,985	2,154,504
Related allowance on collateral dependent individually analyzed loans		19,766	26,485	$ 24,144	$ 18,435
Commercial & industrial
Total loans	[3]	564,082	542,474
Related allowance on collateral dependent individually analyzed loans		9,750	7,277	8,088	10,356
Total commercial
Total loans		2,748,067	2,696,978
Related allowance on collateral dependent individually analyzed loans		29,516	33,762	32,232	28,791
Residential real estate
Total loans	[4]	2,050,399	2,126,171
Related allowance on collateral dependent individually analyzed loans		6,270	6,832	7,403	7,740
Home Equity
Total loans		318,862	297,119
Related allowance on collateral dependent individually analyzed loans		1,186	1,031	1,048	1,115
Other
Total loans	[5]	17,060	17,570
Related allowance on collateral dependent individually analyzed loans		264	335	374	381
Total Consumer
Total loans		335,922	314,689
Related allowance on collateral dependent individually analyzed loans		1,450	1,366	$ 1,422	$ 1,496
Collateral Dependent Individually Analyzed
Total loans		7,508	11,591
Related allowance on collateral dependent individually analyzed loans		0	1,511
Collateral Dependent Individually Analyzed | Commercial real estate
Total loans	[6]	5,605	10,053
Related allowance on collateral dependent individually analyzed loans	[6]	0	1,252
Collateral Dependent Individually Analyzed | Commercial & industrial
Total loans	[7]	0	515
Related allowance on collateral dependent individually analyzed loans	[7]	0	259
Collateral Dependent Individually Analyzed | Total commercial
Total loans		5,605	10,568
Related allowance on collateral dependent individually analyzed loans		0	1,511
Collateral Dependent Individually Analyzed | Residential real estate
Total loans	[8]	1,903	1,023
Related allowance on collateral dependent individually analyzed loans	[8]	$ 0	$ 0

[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] 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 real estate.

[4] 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.

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

[6] Secured by income-producing property.

[7] Secured by business assets.

[8] Secured by one- to four-family residential properties.