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
Mar. 31, 2021
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Year 1 $ (120,704)
Year 2 (106,386)
Year 3 (53,634)
Year 4 (21,374)
Year 5 and thereafter 53,239
Total $ (248,859)