Statements of Changes in Stockholders' Equity - 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, 2018 $ 1,009,958 $ 18,201,691 $ (6,349) $ 22,416,400 $ (7,718,835) $ (421,453) $ 33,481,412
Balance, beginning, shares at Jun. 30, 2018 2,387,124       642,750   2,387,124
Net income       2,342,694     $ 2,342,694
Other comprehensive income loss, net of tax     5,050       5,050
Total comprehensive income             2,347,744
Stock options exercised   184,514     $ 131,167   315,681
Stock options exercised, shares 15,899       (15,899)    
Stock-based compensation   172,148         172,148
Dividends paid on common stock per share       (4,736,962)     (4,736,962)
Purchase of treasury stock         $ (44,888)   (44,888)
Purchase of treasury stock, shares (1,810)       1,810    
Reduction of unearned ESOP shares   173,622       216,747 390,369
Balance, ending at Jun. 30, 2019 $ 1,009,958 18,731,975 (1,299) 20,022,132 $ (7,632,556) (204,706) $ 31,925,504
Balance, ending, common shares at Jun. 30, 2019 2,401,213       628,661   2,401,213
Net income       1,163,668     $ 1,163,668
Other comprehensive income loss, net of tax     (1,808)       (1,808)
Total comprehensive income             1,161,860
Stock options exercised   51,300     $ 29,700   $ 81,000
Stock options exercised, shares 3,600       (3,600)   3,600
Stock-based compensation   189,639         $ 189,639
Dividends paid on common stock per share       (2,388,211)     (2,388,211)
Purchase of treasury stock         $ (47,949)   (47,949)
Purchase of treasury stock, shares (2,180)       2,180    
Reduction of unearned ESOP shares   100,299       204,706 305,005
Balance, ending at Jun. 30, 2020 $ 1,009,958 $ 19,073,213 $ (3,107) $ 18,797,589 $ (7,650,805) $ 31,226,848
Balance, ending, common shares at Jun. 30, 2020 2,402,633       627,241   2,402,633