Loans and Allowance for Loan Losses - Summary Of Allowance For Loan Losses - (Detail) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	$ 4,211,089	$ 4,087,400	$ 4,183,599	$ 4,085,719
Charge-offs	(31,311)	(5,747)	(39,944)	(32,712)
Recoveries	31,316	21,010	67,439	49,656
Net recoveries	5	15,263	27,495	16,944
Provision for loan losses	60,688	16,347	60,688	16,347
Ending balance	4,271,782	4,119,010	4,271,782	4,119,010
Consumer loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	(28,469)	(5,747)	(37,102)	(21,589)
Recoveries	948	1,242	2,014	5,154
Commercial and industrial loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	0	0	0	0
Recoveries	18,175	13,630	35,301	20,880
Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	(2,842)	0	(2,842)	(11,123)
Recoveries	12,193	6,138	30,124	23,622
Real Estate [Member] \| Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	(2,842)	0	(2,842)	(11,123)
Recoveries	12,193	6,138	30,124	12,277
Real Estate [Member] \| Home equity [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Real Estate [Member] \| Multi-family [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Real Estate [Member] \| Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Real Estate [Member] \| Construction and land development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Charge-offs	0	0	0	0
Recoveries	$ 0	$ 0	$ 0	$ 11,345

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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