XML 83 R30.htm IDEA: XBRL DOCUMENT v3.19.2
(6) Warranty Reserve (Tables)
12 Months Ended
Jun. 30, 2019
Warranty Reserve  
Schedule of product warranty liability
    2019     2018  
Beginning warranty reserve balance   $ 205,850     $ 202,000  
Warranty costs incurred     (87,848 )     (122,708 )
Warranty expense accrued     89,986       120,524  
Warranty reserve assumed in the Acquisition     -       5,000  
Changes in estimated warranty costs     -       1,034  
Ending warranty reserve   $ 207,988     $ 205,850