Number of internal loan rating grades.

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- Definition

Schedule of loans, allowance for loan losses and credit quality.

+ References

No definition available.

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- Definition

Threshold limit for loans receivable.

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No definition available.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

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- Definition

Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

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- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Loans, Allowance for Loan Losses and Credit Quality - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Grade	Jun. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Schedule Of Loans Allowance For Loan Losses And Credit Quality [Line Items]
Total outstanding loan balances	$ 1,223,000	$ 904,000	$ 1,223,000	$ 904,000	$ 1,320,000	$ 1,257,000	$ 924,000	$ 1,268,000
Troubled debt restructuring	0	0	0	0
TDR loans, subsequently defaulted within one year	0	$ 0	0	$ 0
Commitment to lend additional funds to borrowers	0		$ 0			0
Number of Internal Loan Rating Grades \| Grade			7
FHLBB \| Loans Pledged
Schedule Of Loans Allowance For Loan Losses And Credit Quality [Line Items]
Carrying value of loans pledged	185,500,000		$ 185,500,000			176,200,000
Commercial And Industrial Loans
Schedule Of Loans Allowance For Loan Losses And Credit Quality [Line Items]
Threshold limit for loans receivable	500,000		500,000
Other Commercial Loans
Schedule Of Loans Allowance For Loan Losses And Credit Quality [Line Items]
Threshold limit for loans receivable	750,000		750,000
Residential Real Estate
Schedule Of Loans Allowance For Loan Losses And Credit Quality [Line Items]
Mortgage loans in process of foreclosure	$ 243,000		$ 243,000			$ 243,000