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6. Intangibles (Details) - USD ($)
Jun. 30, 2018
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense, 2019 $ 1,461,929  
Amortization expense, 2020 1,450,817  
Amortization expense, 2021 1,321,300  
Amortization expense, 2022 673,804  
Amortization expense, 2023 381,806  
Amortization expense, thereafter 1,726,961  
Total future amortization expense $ 7,016,617 $ 4,205,314