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Merger - Additional Information (Detail) - USD ($)		9 Months Ended
	Jul. 01, 2022	Sep. 30, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill		$ 101,652,000	$ 76,851,000
Estimated amortization expense		11,554,000
Acquisition-related Cost		1,900,000
Loans receivable on gross principal due under contract		171,100,000
Fair value adjustment on loans receivables		2,100,000
Cash flows not expected to be collected		5,700,000
Software Expense [Member]
Business Acquisition [Line Items]
Acquisition-related Cost		14,000.0
Employee Benefits [Member]
Business Acquisition [Line Items]
Acquisition-related Cost		16,600
Occupancy and Equipment Expenses [Member]
Business Acquisition [Line Items]
Acquisition-related Cost		51,600
Consulting and Other Professional Fees [Member]
Business Acquisition [Line Items]
Acquisition-related Cost		839,400
Data Processing Cost [Member]
Business Acquisition [Line Items]
Acquisition-related Cost		558,300
Other Operating Expense [Member]
Business Acquisition [Line Items]
Acquisition-related Cost		373,000.0
Core deposit intangibles [Member]
Business Acquisition [Line Items]
Estimated amortization expense		8,475,000	$ 4,939,000
Comunibanc Corp [Member]
Business Acquisition [Line Items]
Business acquisition, transaction costs	$ 46,090,000
Business acquisition, number of shares	984,723
Cash consideration	$ 24,968,000
Goodwill	24,801,000
Purchase price deductible for tax purpose, amount	0
Total assets	315,083,000
Loans	175,500,000
Deposits	271,081,000
Comunibanc Corp [Member] | Core deposit intangibles [Member]
Business Acquisition [Line Items]
Estimated amortization expense	$ 4,426,000	$ 4,426,000

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