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Note 2 - Cash, Cash Equivalents, and Investments (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Cash, Cash Equivalents and Investments [Table Text Block]

		September 30, 2022 (Unaudited)
									Gross				Gross
		*Level*							*Unrealized*				*Unrealized*
		*(1)*			*Fair Value*				*Holding Gains*				*Holding Losses*				*Adjusted Cost*
Cash and Cash Equivalents
Cash					$	654,971			$	—			$	—			$	654,971
Money Market Funds		1				6,084,146				—				—				6,084,146
Subtotal						6,739,117				—				—				6,739,117
Short-Term Investment Securities⁽²⁾
Corporate Bonds⁽³⁾		2				7,397,900				—				(63,984	)			7,461,884
Total					$	14,137,017			$	—			$	(63,984	)		$	14,201,001

		*December 31, 2021 (Audited)*
									*Gross*				*Gross*
		*Level*							*Unrealized*				*Unrealized*
		*(1)*			*Fair Value*				*Holding Gains*				*Holding Losses*				*Adjusted Cost*
Cash and Cash Equivalents
Cash					$	1,377,094			$	—			$	—			$	1,377,094
Money Market Funds		1				14,371,386				—				—				14,371,386
Subtotal						15,748,480				—				—				15,748,480
Short-Term Investment Securities ⁽²⁾
Corporate Bonds ⁽³⁾		2				4,509,285				—				(2,495	)			4,511,780
Total					$	20,257,765			$	—			$	(2,495	)		$	20,260,260