Borrowings - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Banks unused remaining borrowing capacity	$ 91,400	$ 109,700
Advances through FLHB	49,700	29,462
Federal home loan bank maximum borrowing capacity	3,000	3,000
Fed Funds Borrowing [Member]
Fed funds borrowing capacity	5,000
New England Program [Member]
Advances through FLHB	$ 2,200	$ 4,500
Interest rate	0.00%	0.00%

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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