Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) | Common Stock [Member] | Capital in Excess of Par Value [Member] | Accumulated Other Comprehensive (Loss) Income [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 | | |
Comprehensive income (loss): | | | | | | | |
Net income (loss) | | | | 206,975 | | | 206,975 |
Other comprehensive income (loss), net of tax | | | 972 | | | | 972 |
Total comprehensive income (loss) | | | | | | | 207,947 |
Stock options exercised | | 51,300 | | | $ 29,700 | | 81,000 |
Stock options exercised, shares | 3,600 | | | | (3,600) | | |
Stock-based compensation | | 141,450 | | | | | 141,450 |
Dividends paid on common stock per share | | | | (1,791,094) | | | (1,791,094) |
Purchase of treasury stock | | | | | $ (47,949) | | (47,949) |
Purchase of treasury stock, shares | (2,180) | | | | 2,180 | | |
Balance, ending at Mar. 31, 2020 | $ 1,009,958 | 18,924,725 | (327) | 18,438,013 | $ (7,650,805) | (204,706) | 30,516,858 |
Balance, ending, common shares at Mar. 31, 2020 | 2,402,633 | | | | 627,241 | | |
Balance, beginning at Dec. 31, 2019 | $ 1,009,958 | 18,858,202 | (1,457) | 19,138,895 | $ (7,664,005) | (204,706) | 31,136,887 |
Balance, beginning, shares at Dec. 31, 2019 | 2,401,033 | | | | 628,841 | | |
Comprehensive income (loss): | | | | | | | |
Net income (loss) | | | | (103,765) | | | (103,765) |
Other comprehensive income (loss), net of tax | | | 1,130 | | | | 1,130 |
Total comprehensive income (loss) | | | | | | | (102,635) |
Stock options exercised | | 17,520 | | | $ 13,200 | | 30,720 |
Stock options exercised, shares | 1,600 | | | | (1,600) | | |
Stock-based compensation | | 49,003 | | | | | 49,003 |
Dividends paid on common stock per share | | | | (597,117) | | | (597,117) |
Purchase of treasury stock | | | | | | | |
Balance, ending at Mar. 31, 2020 | $ 1,009,958 | 18,924,725 | (327) | 18,438,013 | $ (7,650,805) | (204,706) | 30,516,858 |
Balance, ending, common shares at Mar. 31, 2020 | 2,402,633 | | | | 627,241 | | |
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 |
Comprehensive income (loss): | | | | | | | |
Net income (loss) | | | | (1,061,297) | | | $ (1,061,297) |
Other comprehensive income (loss), net of tax | | | 871 | | | | 871 |
Total comprehensive income (loss) | | | | | | | $ (1,060,426) |
Stock options exercised, shares | | | | | | | |
Stock-based compensation | | 106,286 | | | | | $ 106,286 |
Dividends paid on common stock per share | | | | (1,201,316) | | | (1,201,316) |
Sale of stock to ESOP | $ 33,333 | 3,841,553 | | | $ 1,612,114 | (5,487,000) | |
Sale of stock to ESOP, shares | 300,000 | | | | (200,000) | | |
Balance, ending at Mar. 31, 2021 | $ 1,043,291 | 23,021,052 | (2,236) | 16,534,976 | $ (6,038,691) | (5,487,000) | $ 29,071,392 |
Balance, ending, common shares at Mar. 31, 2021 | 2,702,633 | | | | 427,241 | | 2,702,633 |
Balance, beginning at Dec. 31, 2020 | $ 1,043,291 | 22,995,640 | (2,069) | 17,605,090 | $ (6,038,691) | (5,487,000) | $ 30,116,261 |
Balance, beginning, shares at Dec. 31, 2020 | 2,702,633 | | | | 427,241 | | 2,702,633 |
Comprehensive income (loss): | | | | | | | |
Net income (loss) | | | | (1,070,114) | | | $ (1,070,114) |
Other comprehensive income (loss), net of tax | | | (167) | | | | (167) |
Total comprehensive income (loss) | | | | | | | (1,070,281) |
Stock-based compensation | | 25,412 | | | | | 25,412 |
Balance, ending at Mar. 31, 2021 | $ 1,043,291 | $ 23,021,052 | $ (2,236) | $ 16,534,976 | $ (6,038,691) | $ (5,487,000) | $ 29,071,392 |
Balance, ending, common shares at Mar. 31, 2021 | 2,702,633 | | | | 427,241 | | 2,702,633 |