LOANS - Summary of aging of loans receivable by portfolio segment (Detail) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans acquired with deteriorated credit quality	$ 4,716,336	$ 5,565,827
Total loans	633,063,554	572,362,843
Commercial and Industrial
Financing Receivable, Past Due [Line Items]
Total loans	2,068,871	7,905,524
Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans acquired with deteriorated credit quality	3,301,740	4,113,571
Total loans	379,776,653	319,968,234
Commercial and Multi-Family \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans acquired with deteriorated credit quality	1,379,344	1,412,995
Total loans	173,619,693	175,375,419
Construction \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans	51,799,501	41,384,687
Home Equity Loan \| Consumer
Financing Receivable, Past Due [Line Items]
Loans acquired with deteriorated credit quality	35,252	39,261
Total loans	25,798,836	27,728,979
Home Equity and Other Consumer
Financing Receivable, Past Due [Line Items]
Loans acquired with deteriorated credit quality	35,252
Total loans	25,798,836	27,728,979
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	137,112	27,529
30-59 Days Past Due \| Home Equity Loan \| Consumer
Financing Receivable, Past Due [Line Items]
Loans Not Past Due		27,529
30-59 Days Past Due \| Home Equity and Other Consumer \| Consumer
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	137,112
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	559,838	312,616
60-89 Days Past Due \| Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	559,838	312,616
Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	286,744	857,676
Greater than 89 Days Past Due \| Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	286,744	857,676
Past Due
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	983,694	1,197,821
Past Due \| Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	846,582	1,170,292
Past Due \| Home Equity Loan \| Consumer
Financing Receivable, Past Due [Line Items]
Loans Not Past Due		27,529
Past Due \| Home Equity and Other Consumer
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	137,112
Not Past Due
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	627,363,524	565,599,195
Not Past Due \| Commercial and Industrial
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	2,068,871	7,905,524
Not Past Due \| Residential First Mortgage \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	375,628,331	314,684,371
Not Past Due \| Commercial and Multi-Family \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	172,240,349	173,962,424
Not Past Due \| Construction \| Commercial Real Estate Portfolio Segment
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	51,799,501	41,384,687
Not Past Due \| Home Equity Loan \| Consumer
Financing Receivable, Past Due [Line Items]
Loans Not Past Due		$ 27,662,189
Not Past Due \| Home Equity and Other Consumer
Financing Receivable, Past Due [Line Items]
Loans Not Past Due	$ 25,626,472

Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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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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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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