Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Amortization Expense of Finite Lived Intangible Assets (Details)

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Summary of Significant Accounting Policies - Amortization Expense of Finite Lived Intangible Assets (Details)
Dec. 31, 2018
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2019 $ 2,297,570
2020 2,129,528
2021 2,021,486
2022 1,790,631
2023 328,416
Thereafter $ 1,128,754