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Nature of Business and Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Contract liabilities, current | $ 1,707,943 | $ 1,748,789
Contract liabilities, non-current | 1,803,143 | 1,991,091
Total contract liabilities | $ 3,511,086 | $ 3,739,880

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