XML 72 R46.htm IDEA: XBRL DOCUMENT v3.23.1
Financial Instruments - Marketable Securities by Significant Investment Category (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost $ 70,784,582  
Unrealized Gain (Loss) on Investments (780,795)  
Marketable Securities [Line Items]    
Investment Owned, at Cost 70,784,582  
Investment Owned, at Fair Value 70,003,787  
Cash and cash equivalents 24,600,960 $ 75,433,295
Unrealized Gain (Loss) on Investments (780,795)  
Marketable Securities, Current 16,106,758  
Marketable Securities, Noncurrent 29,296,069  
Marketable Securities 45,402,827  
Investment Owned, at Fair Value 70,003,787  
Marketable Securities, Noncurrent 29,296,069  
Marketable Securities, Current 16,106,758  
Fair Value, Inputs, Level 1    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost [1] 21,991,172  
Unrealized Gain (Loss) on Investments [1] (208,570)  
Marketable Securities [Line Items]    
Investment Owned, at Cost [1] 21,991,172  
Investment Owned, at Fair Value [1] 21,782,602  
Cash and cash equivalents [1] 10,017,005  
Unrealized Gain (Loss) on Investments [1] (208,570)  
Marketable Securities, Current [1] 4,926,950  
Marketable Securities, Noncurrent [1] 6,838,647  
Investment Owned, at Fair Value [1] 21,782,602  
Marketable Securities, Noncurrent [1] 6,838,647  
Marketable Securities, Current [1] 4,926,950  
Fair Value, Inputs, Level 2    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost [2] 34,209,455  
Unrealized Gain (Loss) on Investments [2] (572,225)  
Marketable Securities [Line Items]    
Investment Owned, at Cost [2] 34,209,455  
Investment Owned, at Fair Value [2] 33,637,230  
Unrealized Gain (Loss) on Investments [2] (572,225)  
Marketable Securities, Current [2] 11,179,808  
Marketable Securities, Noncurrent [2] 22,457,422  
Investment Owned, at Fair Value [2] 33,637,230  
Marketable Securities, Noncurrent [2] 22,457,422  
Marketable Securities, Current [2] 11,179,808  
Cash and cash equivalents    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost 14,583,955  
Marketable Securities [Line Items]    
Investment Owned, at Cost 14,583,955  
Investment Owned, at Fair Value 14,583,955  
Cash and cash equivalents 14,583,955  
Investment Owned, at Fair Value 14,583,955  
Commercial Paper | Fair Value, Inputs, Level 1    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost [1] 9,777,252  
Unrealized Gain (Loss) on Investments [1] (2,131)  
Marketable Securities [Line Items]    
Investment Owned, at Cost [1] 9,777,252  
Investment Owned, at Fair Value [1] 9,775,121  
Cash and cash equivalents [1] 9,775,121  
Unrealized Gain (Loss) on Investments [1] (2,131)  
Investment Owned, at Fair Value [1] 9,775,121  
Money Market Funds | Fair Value, Inputs, Level 1    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost [1] 241,884  
Unrealized Gain (Loss) on Investments [1] 0  
Marketable Securities [Line Items]    
Investment Owned, at Cost [1] 241,884  
Investment Owned, at Fair Value [1] 241,884  
Cash and cash equivalents [1] 241,884  
Unrealized Gain (Loss) on Investments [1] 0  
Investment Owned, at Fair Value [1] 241,884  
US Treasury Securities    
Investments, Debt and Equity Securities [Abstract]    
Unrealized Gain (Loss) on Investments (206,439)  
Marketable Securities [Line Items]    
Investment Owned, at Fair Value 11,765,597  
Unrealized Gain (Loss) on Investments (206,439)  
Investment Owned, at Fair Value 11,765,597  
US Treasury Securities | Fair Value, Inputs, Level 1    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost [1] 11,972,036  
Unrealized Gain (Loss) on Investments [1] (206,439)  
Marketable Securities [Line Items]    
Investment Owned, at Cost [1] 11,972,036  
Investment Owned, at Fair Value [1] 11,765,597  
Cash and cash equivalents [1] 0  
Unrealized Gain (Loss) on Investments [1] (206,439)  
Marketable Securities, Current [1] 4,926,950  
Marketable Securities, Noncurrent [1] 6,838,647  
Investment Owned, at Fair Value [1] 11,765,597  
Marketable Securities, Noncurrent [1] 6,838,647  
Marketable Securities, Current [1] 4,926,950  
Asset-backed Securities    
Investments, Debt and Equity Securities [Abstract]    
Unrealized Gain (Loss) on Investments (154,576)  
Marketable Securities [Line Items]    
Investment Owned, at Fair Value 12,018,617  
Unrealized Gain (Loss) on Investments (154,576)  
Investment Owned, at Fair Value 12,018,617  
Asset-backed Securities | Fair Value, Inputs, Level 2    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost [2] 12,173,193  
Unrealized Gain (Loss) on Investments [2] (154,576)  
Marketable Securities [Line Items]    
Investment Owned, at Cost [2] 12,173,193  
Investment Owned, at Fair Value [2] 12,018,617  
Unrealized Gain (Loss) on Investments [2] (154,576)  
Marketable Securities, Current [2] 4,971,754  
Marketable Securities, Noncurrent [2] 7,046,863  
Investment Owned, at Fair Value [2] 12,018,617  
Marketable Securities, Noncurrent [2] 7,046,863  
Marketable Securities, Current [2] 4,971,754  
Corporate Debt Securities    
Investments, Debt and Equity Securities [Abstract]    
Unrealized Gain (Loss) on Investments (417,649)  
Marketable Securities [Line Items]    
Investment Owned, at Fair Value 21,618,613  
Unrealized Gain (Loss) on Investments (417,649)  
Investment Owned, at Fair Value 21,618,613  
Corporate Debt Securities | Fair Value, Inputs, Level 2    
Investments, Debt and Equity Securities [Abstract]    
Investment Owned, at Cost [2] 22,036,262  
Unrealized Gain (Loss) on Investments [2] (417,649)  
Marketable Securities [Line Items]    
Investment Owned, at Cost [2] 22,036,262  
Investment Owned, at Fair Value [2] 21,618,613  
Unrealized Gain (Loss) on Investments [2] (417,649)  
Marketable Securities, Current [2] 6,208,054  
Marketable Securities, Noncurrent [2] 15,410,559  
Investment Owned, at Fair Value [2] 21,618,613  
Marketable Securities, Noncurrent [2] 15,410,559  
Marketable Securities, Current [2] $ 6,208,054  
[1] 3) Level 1 fair value estimates are based on quoted prices in active markets for identical assets and liabilities.
[2] (4) Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets and liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets and liabilities.