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Allowance for Credit Losses - Loans - Additional information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023 USD ($) loan	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) loan	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision (Credit)	$ 34,000	$ (325,000)	$ 335,000	$ (725,000)
Provision (credit) for credit losses	$ 43,000	(325,000)	$ 1,222,000	(725,000)
Number of commercial real estate loan | loan	3		3
Net loan charge-offs			$ 61,000	$ 105,000
Percentage of charge-offs			0.01%	0.02%
Net unfavorable shift			$ 1,100,000
Percentage for Total Loans			1.24%		1.08%
Evaluated for impairment	$ 150,000		$ 150,000
Percentage of coverage on non-performing assets			216.00%		207.00%
Percentage of general reserve	68.00%
Percentage of quantitative reserve	32.00%
Non-performing assets	$ 5,650,000		$ 5,650,000
Non-performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing assets as a percent of loans	0.57%		0.57%
Non-performing assets	$ 5,700,000		$ 5,700,000		$ 5,200,000
Consumer and Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum aggregate balances for commercial loan relationship under structure loan rating process.	250,000		250,000
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum individual loan balance requiring quarterly review	2,000,000		2,000,000
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum individual loan balance requiring quarterly review	250,000		250,000
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum individual loan balance requiring quarterly review	250,000		250,000
Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum individual loan balance requiring quarterly review	100,000		100,000
Commercial | Commercial.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision (Credit)		(93,000)		$ 159,000
Minimum aggregate balances for commercial loan relationship under structure loan rating process.	1,000,000		$ 1,000,000
Commercial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum percent of portfolio to be reviewed			30.00%
Minimum aggregate balances for commercial loan relationship under structure loan rating process.	1,000,000		$ 1,000,000
Consumer. | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision (Credit)	(11,000)	$ 26,000	417,000	$ 37,000
Non-performing assets	$ 658,000		$ 658,000

X

- Definition

The percentage of after recoveries, of loans and leases that have been written-off.

+ References

No definition available.

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff net. Excludes net investment in lease.

+ References

No definition available.

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- Definition

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- Definition

Threshold amount for evaluation of impairment of financing receivable.

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- Definition

Financing Receivable, Threshold Balance Which Requires Quarterly Reviews.

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- Definition

Amount of minimum aggregate balances for commercial loan relationship under structure loan rating process.

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- Definition

The amount of net unfavorable shift.

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Number of commercial real estate loan risk downgraded.

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- Definition

This elements represents percentage of total loans.

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- Definition

Percentage of allowance of credit loss on coverage of non performing assets on loan portfolio.

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- Definition

Percentage of general reserve represented by qualitative adjustment.

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No definition available.

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Percentage of general reserve represented by quantitative adjustment.

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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.

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Section 50
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-Publisher FASB
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- Definition

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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- Definition

Reflects the percentage derived from dividing impaired loans on which interest has ceased to be accrued by total loans.

+ References

No definition available.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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