Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Liabilities Other Than Goodwill - Future Amortization of Customer Contracts (Details)

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Intangible Assets and Liabilities Other Than Goodwill - Future Amortization of Customer Contracts (Details) - Customer Contracts
Jun. 30, 2019
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Year 1 $ (179,760)
Year 2 (190,417)
Year 3 (214,440)
Year 4 (176,316)
Year 5 $ (116,609)