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Loans and Allowance for Credit Losses on Loans (Composition of Loan Portfolio, Excluding Residential Loans Held for Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 3,431,474	$ 3,219,822
Loans	3,431,474	3,219,822	$ 3,095,023
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,306,447	1,054,798
Loans	1,306,447	1,054,798	1,070,374
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans			1,243,397
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	363,695	381,494
Loans	363,695	381,494	442,701
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	210,403	258,573
Loans	210,403	258,573	312,779
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	19,516	20,392
Loans	19,516	20,392	$ 25,772
SBA PPP Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	35,953	135,095
Loans	35,953	135,095
Commercial Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,895,108	1,886,059
Retail Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,536,366	1,333,763
Commercial real estate, non owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,178,185	1,097,975
Loans	1,178,185	1,097,975
Commercial real estate, owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	317,275	271,495
Loans	$ 317,275	$ 271,495

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

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