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PRODUCT WARRANTY OBLIGATIONS (Tables)
 12 Months Ended
Jun. 30, 2017
Standard Product Warranty Disclosure [Abstract]  
Schedule of Product Warranty Liability
Changes to the product warranty obligations for the years ended June 30, 2017 and 2016 were as follows:
Year Ended June 30,
 
Balance,
beginning
of year
 
Provision
charged to
expense
 
Warranty
expenses
incurred
 
Balance,
end of year
2017
 
$
483,530

 
159,990

 
(258,561
)
 
$
384,959

2016
 
$
531,891

 
214,827

 
(263,188
)
 
$
483,530