Loans serviced for others.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Minimum balance commercial loans rated.

+ References

No definition available.

+ Details

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- Definition

Number of industries for credit concentrations.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.

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- Definition

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

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- Definition

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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Loans - Additional Information (Detail)	3 Months Ended
Loans - Additional Information (Detail)	Mar. 31, 2023 USD ($) Industry	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans serviced for others	$ 135,000,000.0		$ 137,500,000
Interest and fee income on loans	7,969,000	$ 5,777,000
Total Loans	647,626,000		626,958,000
Assisted living facilities loans	641,466,000		$ 620,333,000
Outstanding balance of commercial loans classified under credit risk, minimum amount	$ 500,000
Credit Concentration Risk [Member] \| Loans Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of industries for credit concentrations \| Industry	2
Credit Concentration Risk [Member] \| Loans Receivable [Member] \| Lessors of Non-residential Buildings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 600,000
Concentration of credit percentage of total loans	11.00%
Credit Concentration Risk [Member] \| Loans Receivable [Member] \| Assisted Living Facilities for Elderly [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 25,300,000
Concentration of credit percentage of total loans	4.00%