Loans (Past Due Loans) (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Current		$ 5,098,561	$ 4,262,514
Total loans	[1]	5,110,139	4,272,925
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current		1,828,117	1,639,062
Total loans	[2]	1,829,304	1,639,062
Commercial & Industrial [Member]
Financing Receivable, Past Due [Line Items]
Current		656,132	641,552
Total loans	[3]	656,397	641,555
Total Commercial [Member]
Financing Receivable, Past Due [Line Items]
Current		2,484,249	2,280,614
Total loans		2,485,701	2,280,617
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current		2,314,127	1,717,353
Total loans	[4]	2,323,002	1,726,975
Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Current		284,480	246,932
Total loans		285,715	247,697
Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Current		15,705	17,615
Total loans	[5]	15,721	17,636
Total Consumer [Member]
Financing Receivable, Past Due [Line Items]
Current		300,185	264,547
Total loans		301,436	265,333
30-59
Financing Receivable, Past Due [Line Items]
Past due		7,364	2,388
30-59 | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		1,187	0
30-59 | Commercial & Industrial [Member]
Financing Receivable, Past Due [Line Items]
Past due		265	3
30-59 | Total Commercial [Member]
Financing Receivable, Past Due [Line Items]
Past due		1,452	3
30-59 | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		4,793	1,784
30-59 | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Past due		1,103	580
30-59 | Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		16	21
30-59 | Total Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		1,119	601
60-89
Financing Receivable, Past Due [Line Items]
Past due		435	3,253
60-89 | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
60-89 | Commercial & Industrial [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
60-89 | Total Commercial [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
60-89 | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		303	3,176
60-89 | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Past due		132	77
60-89 | Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
60-89 | Total Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		132	77
Over 90
Financing Receivable, Past Due [Line Items]
Past due		3,779	4,770
Over 90 | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
Over 90 | Commercial & Industrial [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
Over 90 | Total Commercial [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
Over 90 | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		3,779	4,662
Over 90 | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	108
Over 90 | Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	0
Over 90 | Total Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		0	108
Total Past Due
Financing Receivable, Past Due [Line Items]
Past due		11,578	10,411
Total Past Due | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		1,187	0
Total Past Due | Commercial & Industrial [Member]
Financing Receivable, Past Due [Line Items]
Past due		265	3
Total Past Due | Total Commercial [Member]
Financing Receivable, Past Due [Line Items]
Past due		1,452	3
Total Past Due | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Past due		8,875	9,622
Total Past Due | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Past due		1,235	765
Total Past Due | Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		16	21
Total Past Due | Total Consumer [Member]
Financing Receivable, Past Due [Line Items]
Past due		$ 1,251	$ 786

[1] Includes net unamortized loan origination costs of $11.6 million and $6.7 million, respectively, at December 31, 2022 and 2021 and net unamortized premiums on loans purchased from and serviced by other financial institutions of $318 thousand and $414 thousand, respectively, at December 31, 2022 and 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 $1.1 million and $38.0 million, respectively, of PPP loans as of December 31, 2022 and 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.