Cash, Cash Equivalents and Short-Term Investments - Contractual Maturities (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Cash, Cash Equivalents and Short-Term Investments
Due within one year, Amortized Cost	$ 14,121,596	$ 12,043,525
Due between one and two years, Amortized Cost	12,099,290	9,078,134
Total, Amortized Cost	26,220,886	21,121,659
Due within one year, Fair Value	14,137,570	12,046,700
Due between one and two years, Fair Value	12,287,600	9,047,400
Total, Fair Value	$ 26,425,170	$ 21,094,100