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Product Warranties (Tables)
12 Months Ended
Sep. 30, 2016
Payables and Accruals [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
 Product warranty activity for the years ended September 30 was as follows:

 
2016
 
2015
Balance at the beginning of the period

$
125,423

 
$
183,555

Accruals for warranties for products sold in the period

52,066

 
1,497

Fulfillment of warranty obligations

(46,648
)
 
(59,629
)
Balance at the end of the period

$
130,841

 
$
125,423