Loans (Past Due Loans) (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Past due		$ 8,557	$ 10,411
Current		4,471,265	4,262,514
Total loans	[1]	4,479,822	4,272,925
30-59
Financing Receivable, Past Due [Line Items]
Past due		2,381	2,388
60-89
Financing Receivable, Past Due [Line Items]
Past due		1,387	3,253
Over 90
Financing Receivable, Past Due [Line Items]
Past due		4,789	4,770
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Past due		0	0
Current		1,609,618	1,639,062
Total loans	[2]	1,609,618	1,639,062
Commercial Real Estate | 30-59
Financing Receivable, Past Due [Line Items]
Past due		0	0
Commercial Real Estate | 60-89
Financing Receivable, Past Due [Line Items]
Past due		0	0
Commercial Real Estate | Over 90
Financing Receivable, Past Due [Line Items]
Past due		0	0
Commercial & Industrial
Financing Receivable, Past Due [Line Items]
Past due		7	3
Current		620,263	641,552
Total loans	[3]	620,270	641,555
Commercial & Industrial | 30-59
Financing Receivable, Past Due [Line Items]
Past due		7	3
Commercial & Industrial | 60-89
Financing Receivable, Past Due [Line Items]
Past due		0	0
Commercial & Industrial | Over 90
Financing Receivable, Past Due [Line Items]
Past due		0	0
Total Commercial
Financing Receivable, Past Due [Line Items]
Past due		7	3
Current		2,229,881	2,280,614
Total loans		2,229,888	2,280,617
Total Commercial | 30-59
Financing Receivable, Past Due [Line Items]
Past due		7	3
Total Commercial | 60-89
Financing Receivable, Past Due [Line Items]
Past due		0	0
Total Commercial | Over 90
Financing Receivable, Past Due [Line Items]
Past due		0	0
Residential Real Estate
Financing Receivable, Past Due [Line Items]
Past due		7,794	9,622
Current		1,958,547	1,717,353
Total loans	[4]	1,966,341	1,726,975
Residential Real Estate | 30-59
Financing Receivable, Past Due [Line Items]
Past due		1,795	1,784
Residential Real Estate | 60-89
Financing Receivable, Past Due [Line Items]
Past due		1,387	3,176
Residential Real Estate | Over 90
Financing Receivable, Past Due [Line Items]
Past due		4,612	4,662
Home Equity
Financing Receivable, Past Due [Line Items]
Past due		728	765
Current		267,057	246,932
Total loans		267,785	247,697
Home Equity | 30-59
Financing Receivable, Past Due [Line Items]
Past due		551	580
Home Equity | 60-89
Financing Receivable, Past Due [Line Items]
Past due		0	77
Home Equity | Over 90
Financing Receivable, Past Due [Line Items]
Past due		177	108
Other
Financing Receivable, Past Due [Line Items]
Past due		28	21
Current		15,780	17,615
Total loans	[5]	15,808	17,636
Other | 30-59
Financing Receivable, Past Due [Line Items]
Past due		28	21
Other | 60-89
Financing Receivable, Past Due [Line Items]
Past due		0	0
Other | Over 90
Financing Receivable, Past Due [Line Items]
Past due		0	0
Total Consumer
Financing Receivable, Past Due [Line Items]
Past due		756	786
Current		282,837	264,547
Total loans		283,593	265,333
Total Consumer | 30-59
Financing Receivable, Past Due [Line Items]
Past due		579	601
Total Consumer | 60-89
Financing Receivable, Past Due [Line Items]
Past due		0	77
Total Consumer | Over 90
Financing Receivable, Past Due [Line Items]
Past due		$ 177	$ 108

[1] Includes net unamortized loan origination costs of $10.0 million and $6.7 million, respectively, at June 30, 2022 and December 31, 2021 and net unamortized premiums on purchased loans of $359 thousand and $414 thousand, respectively, at June 30, 2022 and December 31, 2021.

[2] 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] 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 $1.9 million and $38.0 million, respectively, of PPP loans as of June 30, 2022 and December 31, 2021.

[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.