Loans - TDRs by Class and Specific Reserve (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	60	74
Balance	$ 8,341	$ 11,534
Specific Reserves	$ 532	$ 369
Commercial \| Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	8	13
Balance	$ 1,227	$ 2,558
Specific Reserves	$ 42	$ 106
Commercial \| Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	1	1
Balance	$ 661	$ 681
Specific Reserves	$ 16	$ 18
Commercial \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	5	6
Balance	$ 765	$ 717
Specific Reserves	$ 337	$ 96
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Residential \| Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Residential \| Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	45	51
Balance	$ 5,686	$ 7,384
Specific Reserves	$ 137	$ 149
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	0	2
Balance	$ 0	$ 186
Specific Reserves	$ 0	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans \| loan	1	1
Balance	$ 2	$ 8
Specific Reserves	$ 0	$ 0

Specific allowance for loan and lease losses on receivable financings that are classified as troubled debt restructurings.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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