Loans (Past Due Loans) (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Past due		$ 7,529	$ 10,411
Current		4,841,344	4,262,514
Total loans	[1]	4,848,873	4,272,925
30-59
Financing Receivable, Past Due [Line Items]
Past due		1,830	2,388
60-89
Financing Receivable, Past Due [Line Items]
Past due		219	3,253
Over 90
Financing Receivable, Past Due [Line Items]
Past due		5,480	4,770
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Past due		0	0
Current		1,762,687	1,639,062
Total loans	[2]	1,762,687	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		4	3
Current		652,754	641,552
Total loans	[3]	652,758	641,555
Commercial & Industrial | 30-59
Financing Receivable, Past Due [Line Items]
Past due		4	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		4	3
Current		2,415,441	2,280,614
Total loans		2,415,445	2,280,617
Total Commercial | 30-59
Financing Receivable, Past Due [Line Items]
Past due		4	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		7,256	9,622
Current		2,136,842	1,717,353
Total loans	[4]	2,144,098	1,726,975
Residential Real Estate | 30-59
Financing Receivable, Past Due [Line Items]
Past due		1,607	1,784
Residential Real Estate | 60-89
Financing Receivable, Past Due [Line Items]
Past due		219	3,176
Residential Real Estate | Over 90
Financing Receivable, Past Due [Line Items]
Past due		5,430	4,662
Home Equity
Financing Receivable, Past Due [Line Items]
Past due		252	765
Current		273,490	246,932
Total loans		273,742	247,697
Home Equity | 30-59
Financing Receivable, Past Due [Line Items]
Past due		202	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		50	108
Other
Financing Receivable, Past Due [Line Items]
Past due		17	21
Current		15,571	17,615
Total loans	[5]	15,588	17,636
Other | 30-59
Financing Receivable, Past Due [Line Items]
Past due		17	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		269	786
Current		289,061	264,547
Total loans		289,330	265,333
Total Consumer | 30-59
Financing Receivable, Past Due [Line Items]
Past due		219	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		$ 50	$ 108

[1] Includes net unamortized loan origination costs of $10.7 million and $6.7 million, respectively, at September 30, 2022 and December 31, 2021 and net unamortized premiums on purchased loans of $329 thousand and $414 thousand, respectively, at September 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 $1.4 million and $38.0 million, respectively, of PPP loans as of September 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.