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Cash, Cash Equivalent, and Investments (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Cash and Cash Equivalents $ 21,862,581   $ 21,862,581   $ 4,823,544
Short term investments, adjusted cost 8,544,815   8,544,815   29,399,146
Long term Investments, gross unrealized holding loss         0
Long term investments, adjusted cost 0   0   1,511,636
Cash and Investment, fair value 30,467,696   30,467,696   35,738,787
Investment, gross unrealized holding gain 60,300   60,300   22,452
Investment, gross unrealized holding losses 0   0   (17,991)
Cash and Investment, adjusted cost 30,407,396   30,407,396   35,734,326
Cash          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Cash and Cash Equivalents 785,678   785,678   1,010,510
Money Market Funds | Level 1          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Cash and Cash Equivalents 21,076,903   21,076,903   3,813,034
Corporate bonds          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Held-to-maturity, premium paid on purchase 0 $ 54,385 221,156 $ 158,548 233,550
Corporate bonds | Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Short term investments, fair value 8,605,115   8,605,115   29,387,053
Short term investments, gross unrealized holding gain 60,300   60,300   5,898
Short term investments, gross unrealized holding loss 0   0   (17,991)
Short term investments, adjusted cost $ 8,544,815   $ 8,544,815   29,399,146
Long term Investments, fair value         1,528,190
Long term Investments, gross unrealized holding gain         16,554
Long term investments, adjusted cost         $ 1,511,636