7. Earnings (Loss) Per Common Share (Tables)
6 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings (loss) per common share
   

For the Three Month Period Ended

December 31, 2019

   

For the Three Month Period Ended

December 31, 2018

   

For the Six Month Period Ended

December 31, 2019

   

For the Six Month Period Ended

December 31, 2018

 
Net income (loss)   $ 3,600     $ 118,400     $ (52,600 )   $ 260,500  
                                 
Weighted average common shares outstanding     1,499,396       1,494,112       1,496,718       1,494,112  
Effect of dilutive securities     58,330       18,839       -       11,368  
Weighted average dilutive common shares outstanding     1,557,726       1,512,951       1,496,718       1,505,480  
                                 
Basic earnings (loss) per common share   $ .00     $ .08     $ (.04)   $ .17  
Diluted earnings (loss) per common share   $ .00     $ .08     $ (.04)     $ .17