Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Unearned ESOP Shares [Member]	Total
Balance, beginning at Jun. 30, 2019	$ 1,009,958	$ 18,731,975	$ (1,299)	$ 20,022,132	$ (7,632,556)	$ (204,706)	$ 31,925,504
Balance, beginning, shares at Jun. 30, 2019	2,401,213				628,661
Net income				81,776			81,776
Other comprehensive income (loss), net of tax			197				197
Total comprehensive income							81,973
Stock options exercised		33,780			$ 16,500		50,280
Stock options exercised, shares	2,000				(2,000)
Stock-based compensation		47,176					47,176
Dividends declared on common stock				(597,260)			(597,260)
Purchase of treasury stock					$ (8,291)		(8,291)
Purchase of treasury stock, shares	(333)				333
Balance, ending at Sep. 30, 2019	$ 1,009,958	18,812,931	(1,102)	19,506,648	$ (7,624,347)	(204,706)	31,499,382
Balance, ending, common shares at Sep. 30, 2019	2,402,880				626,994
Balance, beginning at Jun. 30, 2020	$ 1,009,958	19,073,213	(3,107)	18,797,589	$ (7,650,805)		$ 31,226,848
Balance, beginning, shares at Jun. 30, 2020	2,402,633				627,241		2,402,633
Net income				189,824			$ 189,824
Other comprehensive income (loss), net of tax			(1,674)				(1,674)
Total comprehensive income							$ 188,150
Stock options exercised, shares
Stock-based compensation		47,167					$ 47,167
Dividends declared on common stock				(600,658)			(600,658)
Balance, ending at Sep. 30, 2020	$ 1,009,958	$ 19,120,380	$ (4,781)	$ 18,386,755	$ (7,650,805)		$ 30,861,507
Balance, ending, common shares at Sep. 30, 2020	2,402,633				627,241		2,402,633