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Investments in Debt Securities Available for Sale - Schedule of Cost, Fair Value and Maturities of Short Term Investments (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Short-term investments - Cost $ 9,883,642 $ 7,943,108
Short-term investments - Fair Value 9,887,455 7,985,886
Short-term investment maturities - Within 3 months, cost 5,592,801 7,943,108
Short-term investment maturities - Between 3-12 months, cost 4,290,841
Total, cost 9,883,642 7,943,108
Short-term investment maturities - Within 3 months, fair value 5,592,490 7,985,886
Short-term investment maturities - Between 3-12 months, fair value 4,294,965
Total, fair value 9,887,455 7,985,886
Corporate Debt Securities [Member]    
Short-term investments - Cost 9,883,642 7,943,108
Short-term investments - Fair Value $ 9,887,455 $ 7,985,886