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Cash, Cash Equivalents and Short-Term Investments (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Cash and Cash Equivalents [Abstract]    
Cash and cash equivalents $ 6,949,937 $ 6,293,293
Short-term investments 996,495 2,480,753
Total $ 7,946,432 $ 8,774,046