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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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LOANS - Summary of Loans Receivable and Related Reclassifications (Detail) - USD ($)	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total loans	$ 714,751,296	$ 721,729,711	$ 721,603,936
Allowance for credit losses	(2,860,949)	(2,860,949)	(2,578,174)	$ (2,153,174)	$ (2,153,174)
Net loans	711,890,347	718,868,762	719,025,762
Commercial Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans	1,523,380	1,684,189	1,684,189
Allowance for credit losses	(4,000)	(4,000)	(3,960)	(9,300)	(9,400)
Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans	489,079,665	495,689,840	466,100,627
Allowance for credit losses	(1,914,947)	(1,814,203)	(1,602,534)	(1,075,074)	(1,092,474)
Commercial and Multi-Family Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans			162,338,669
Allowance for credit losses			(615,480)	(780,000)	(768,600)
Commercial Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans	95,343,455	96,030,721
Allowance for credit losses	(423,000)	(522,977)	(381,180)
Multi-Family Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans	71,414,226	66,400,713
Allowance for credit losses	(278,000)	(259,769)	(234,300)
Construction \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans	57,379,095	61,825,478	61,825,478
Allowance for credit losses	(195,240)	(260,000)	(258,500)	(208,000)	(195,000)
Home Equity and Other Consumer \| Consumer
Financing Receivable, Past Due [Line Items]
Total loans			29,654,973
Allowance for credit losses			(97,700)	$ (80,800)	$ (87,700)
Consumer \| Consumer
Financing Receivable, Past Due [Line Items]
Total loans	$ 11,475	98,770
Allowance for credit losses			(97,700)
Post Adoption
Financing Receivable, Past Due [Line Items]
Total loans			721,729,711
Allowance for credit losses			2,860,949
Net loans			718,868,762
Post Adoption \| Commercial Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans			1,684,189
Post Adoption \| Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans			495,689,840
Post Adoption \| Commercial Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans			96,030,721
Post Adoption \| Multi-Family Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans			66,400,713
Post Adoption \| Construction \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans			61,825,478
Post Adoption \| Consumer \| Consumer
Financing Receivable, Past Due [Line Items]
Total loans			98,770
Pre Adoption
Financing Receivable, Past Due [Line Items]
Total loans		721,603,936	721,603,936
Allowance for credit losses		(2,578,174)	(2,578,174)
Net loans		719,025,762	719,025,762
Pre Adoption \| Commercial Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		1,684,189	1,684,189
Allowance for credit losses		(3,960)
Pre Adoption \| Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		466,100,627	466,100,627
Allowance for credit losses		(1,602,534)
Pre Adoption \| Commercial and Multi-Family Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		162,338,669	162,338,669
Allowance for credit losses		(615,480)
Pre Adoption \| Construction \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		61,825,478	61,825,478
Allowance for credit losses		(258,500)
Pre Adoption \| Home Equity and Other Consumer \| Consumer
Financing Receivable, Past Due [Line Items]
Total loans		29,654,973	29,654,973
Allowance for credit losses		(97,700)
The Effect of Adoption
Financing Receivable, Past Due [Line Items]
Total loans		125,775	125,775
Allowance for credit losses		(282,775)	(282,775)
Net loans		(157,000)	(157,000)
The Effect of Adoption \| Commercial Portfolio Segment
Financing Receivable, Past Due [Line Items]
Allowance for credit losses		(40)
The Effect of Adoption \| Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		29,589,213	29,589,213
Allowance for credit losses		(211,669)
The Effect of Adoption \| Commercial and Multi-Family Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		(162,338,669)	(162,338,669)
Allowance for credit losses		615,480
The Effect of Adoption \| Commercial Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		96,030,721	96,030,721
Allowance for credit losses		(522,977)
The Effect of Adoption \| Multi-Family Real Estate \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans		66,400,713	66,400,713
Allowance for credit losses		(259,769)
The Effect of Adoption \| Construction \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Allowance for credit losses		(1,500)
The Effect of Adoption \| Home Equity and Other Consumer \| Consumer
Financing Receivable, Past Due [Line Items]
Total loans		(29,654,973)	(29,654,973)
Allowance for credit losses		97,700
The Effect of Adoption \| Consumer \| Consumer
Financing Receivable, Past Due [Line Items]
Total loans		$ 98,770	$ 98,770