Quarterly report pursuant to Section 13 or 15(d)

Intangible assets and liabilities other than goodwill and excess of cost over fair value of net assets acquired (Details)

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Intangible assets and liabilities other than goodwill and excess of cost over fair value of net assets acquired (Details) - USD ($)
9 Months Ended
May 18, 2017
Sep. 30, 2017
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization of intangible assets   $ 74,482 $ 73,511
Net credit to cost of sales for amortization of contract related intangible assets and liabilities   $ 428,264 $ 0
Benchmark level of margin contribution for measurement of fair value of customer contracts (percent) 35.00%