Loans (Collateral dependent individually analyzed loans) (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Total loans	[1]	$ 4,272,925	$ 4,195,990
Commercial Real Estate [Member]
Total loans	[2]	1,639,062	1,633,024
Commercial & Industrial [Member]
Total loans	[3]	641,555	817,408
Total Commercial [Member]
Total loans		2,280,617	2,450,432
Residential Real Estate [Member]
Total loans	[4]	1,726,975	1,467,312
Home Equity [Member]
Total loans		247,697	259,185
Other Consumer [Member]
Total loans	[5]	17,636	19,061
Total Consumer [Member]
Total loans		265,333	278,246
Collateral Dependent Individually Analyzed [Member]
Total loans		14,406	8,444
Related allowance on individually analyzed loans		534	221
Collateral Dependent Individually Analyzed [Member] | Commercial Real Estate [Member]
Total loans	[6]	10,603	1,792
Related allowance on individually analyzed loans	[6]	0	0
Collateral Dependent Individually Analyzed [Member] | Commercial & Industrial [Member]
Total loans	[7]	0	451
Related allowance on individually analyzed loans	[7]	0	0
Collateral Dependent Individually Analyzed [Member] | Total Commercial [Member]
Total loans		10,603	2,243
Related allowance on individually analyzed loans		0	0
Collateral Dependent Individually Analyzed [Member] | Residential Real Estate [Member]
Total loans	[8]	3,803	5,947
Related allowance on individually analyzed loans	[8]	534	38
Collateral Dependent Individually Analyzed [Member] | Home Equity [Member]
Total loans	[8]	0	254
Related allowance on individually analyzed loans	[8]	0	183
Collateral Dependent Individually Analyzed [Member] | Other Consumer [Member]
Total loans		0	0
Related allowance on individually analyzed loans		0	0
Collateral Dependent Individually Analyzed [Member] | Total Consumer [Member]
Total loans		0	254
Related allowance on individually analyzed loans		$ 0	$ 183

[1] Includes net unamortized loan origination costs of $6.7 million and $1.5 million, respectively, at December 31, 2021 and 2020 and net unamortized premiums on loans purchased from and serviced by other financial institutions of $414 thousand and $787 thousand, respectively, at December 31, 2021 and 2020.

[2] Commercial real estate (“CRE”) consists of commercial mortgages primarily secured by 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] Commercial & industrial (“C&I”) consists of loans to businesses and individuals, a portion of which are fully or partially collateralized by real estate. C&I also includes $38.0 million and $199.8 million, respectively, of PPP loans as of December 31, 2021 and 2020.

[4] Residential real estate consists of mortgage and homeowner construction loans secured by one- to four-family residential properties.

[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.