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7. Intangibles (Tables)
12 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Future amortization expense related to intangible assets
2018  $762,865 
2019   762,866 
2020   310,515 
2021   240,554 
2022   240,554 
Thereafter   235,844 
   $2,553,198