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Marketable Investment Securities (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-Sale Securities

December 31, 2021		Amortized Cost				Gross unrealized holding gains				Gross unrealized holding losses				Aggregate fair value

Government treasury bills		$	5,526,122			$	-			$	(10,202	)		$	5,515,920
Corporate bonds, notes and commercial paper			38,181,099				-				(7,814	)			38,173,285
		$	43,707,221			$	-			$	(18,016	)		$	43,689,205

December 31, 2020		Amortized Cost				Gross unrealized holding gains				Gross unrealized holding losses				Aggregate fair value

Commercial paper		$	449,992				-				-			$	449,992
		$	449,992			$	-			$	-			$	449,992

Schedule of Maturities of Debt Securities Classified as Available-for-sale Securities

Maturities of debt securities classified as available-for-sale securities at December 31, 2021 are as follows:

December 31, 2021		Amortized Cost				Aggregate fair value
Due within one year		$	41,680,635			$	41,667,405
Due after one year through two years			2,026,586				2,021,800
		$	43,707,221			$	43,689,205