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Loans and Allowance for Credit Losses on Loans - Schedule of Collateral-Dependent Non-Accrual Loans (Details) - USD ($)	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	$ 22,539,000	$ 22,547,000	$ 23,023,000	$ 19,100,000	$ 19,958,000	$ 22,874,000
Weighted average ratio of loans value to collateral dependent loans value	67.00%		67.00%
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 7,564,000		$ 7,963,000
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	454,000		413,000
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0		0
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	8,018,000		8,376,000
Allowance for credit losses	0		0
Commercial real estate loans | Commercial owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	2,617,000	2,622,000	2,776,000	2,037,000	2,304,000	2,778,000
Commercial real estate loans | Commercial owner-occupied | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	7,564,000		7,269,000
Commercial real estate loans | Commercial owner-occupied | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0		0
Commercial real estate loans | Commercial owner-occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0		0
Commercial real estate loans | Commercial owner-occupied | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	7,564,000		7,269,000
Allowance for credit losses	0		0
Commercial real estate loans | Commercial investor-owned
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	12,439,000	12,301,000	12,739,000	10,761,000	10,856,000	12,682,000
Commercial real estate loans | Commercial investor-owned | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans			694,000
Commercial real estate loans | Commercial investor-owned | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans			0
Commercial real estate loans | Commercial investor-owned | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans			0
Commercial real estate loans | Commercial investor-owned | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans			694,000
Allowance for credit losses			0
Residential loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	530,000	549,000	595,000	412,000	520,000	738,000
Residential loans | Home equity | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0		0
Residential loans | Home equity | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	454,000		413,000
Residential loans | Home equity | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0		0
Residential loans | Home equity | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	454,000		413,000
Allowance for credit losses	0		0
Residential loans | Other residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	585,000	$ 628,000	644,000	$ 613,000	$ 757,000	$ 998,000
Residential loans | Other residential | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual collateral dependent loans in process of foreclosure	$ 0		$ 0

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
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