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Note 4 - Cash, Cash Equivalents and Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Cash and Cash Equivalents [Table Text Block]

		September 30, 2022				December 31, 2021
Cash in banking institutions		$	1,276,935			$	30,308,075
Money market funds			4,317,557				7,005,483
Commercial paper			992,526				—
Total		$	6,587,018				37,313,558

Debt Securities, Available-for-Sale [Table Text Block]

		Amortized cost				Unrealized gains				Unrealized losses				Fair Value
Commercial paper		$	15,357,565			$	—			$	(56,985	)		$	15,300,580
U.S. treasury bonds			4,000,330				—				(29,970	)			3,970,360
Total		$	19,357,895			$	—			$	(86,955	)		$	19,270,940

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI https://asc.fasb.org/topic&trid=2196928

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