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6. Earnings Per Share (Details) - USD ($)
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Earnings Per Share [Abstract]    
Net income attributable to Parent Company $ 6,920,360 $ 253,938
Weighted-average shares of common stock outstanding:    
Basic shares outstanding 10,666,059 10,570,203
Dilutive effect of common stock equivalents arising from stock options 151,991 135,297
Diluted Outstanding shares 10,818,050 10,705,500
Basic earnings per share $ 0.65 $ 0.02
Diluted earnings per share $ 0.64 $ 0.02