Loans and Allowance for Loan Losses - Major classifications (Details) - USD ($)	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Loans and Leases Receivable Disclosure [Line Items]
Total loans	$ 216,832,440	$ 238,653,905
Less: allowance for loan losses	(1,412,489)	(1,353,427)	$ (1,293,965)
Total	215,419,951	237,300,478
Construction, Land, Development
Loans and Leases Receivable Disclosure [Line Items]
Total loans	2,458,461	4,598,382
Less: allowance for loan losses	(11,063)	(13,795)	(4,319)
Total	2,447,398	4,584,587
Residential \| 1-4 Family Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Total loans	72,011,570	100,506,311
Less: allowance for loan losses	(326,408)	(356,434)	(67,593)
Total	71,685,162	100,149,877
Residential \| 1-4 Family Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Total loans	22,368,557	21,213,680
Less: allowance for loan losses	(115,645)	(77,220)	(26,630)
Total	22,252,912	21,136,460
Residential \| Multifamily
Loans and Leases Receivable Disclosure [Line Items]
Total loans	91,876,323	76,444,156
Less: allowance for loan losses	(459,382)	(286,665)	(109,870)
Total	91,416,941	76,157,491
Commercial \| Commercial Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Total loans	6,405,226	6,733,183
Less: allowance for loan losses	(99,851)	(95,711)	(61,193)
Total	6,305,375	6,637,472
Commercial \| Commercial Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Total loans	14,182,106	20,237,534
Less: allowance for loan losses	(230,459)	(312,670)	(738,366)
Total	13,951,647	19,924,864
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total loans	7,530,197	8,920,659
Less: allowance for loan losses	(66,523)	(97,312)	$ (70,058)
Total	$ 7,463,674	$ 8,823,347

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 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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