Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Contract Balances (Details)

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Summary of Significant Accounting Policies - Contract Balances (Details)
 9 Months Ended
Sep. 30, 2018
USD ($)
Summary of Significant Accounting Policies  
Net Receivables, Opening balance $ 11,064,720
Net Receivables, Closing balance 13,990,477
Increase/(decrease) 2,925,757
Contract Liabilities, Current, Opening balance 31,668
Contract Liabilities, Current, Closing balance 22,540
Increase/(decrease) (9,128)
Contract Liabilities, Long-Term, Opening balance 68,631
Contract Liabilities, Long-Term, Closing balance 48,694
Increase/(decrease) $ (19,937)