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

3 Months Ended

Mar. 31, 2025

Notes Tables

Cash, Cash Equivalent, and Investment [Table Text Block]

		*March 31, 2025 (Unaudited)*
										*Allowance*				*Gross*				*Gross*
		*Level*								*for*				*Unrealized*				*Unrealized*
		*(1)*				*Fair Value*				*Credit Losses*				*Holding Gains*				*Holding Losses*				*Adjusted Cost*
Cash and Cash Equivalents
Cash						$	1,542,566			$	—			$	—			$	—			$	1,542,566
Money Market Funds ⁽²⁾			1				3,522,375				—				—				—				3,522,375
Subtotal							5,064,941				—				—				—				5,064,941
Short-Term Investment Securities⁽³⁾
Corporate Bonds ⁽⁴⁾⁽⁵⁾			2				2,284,090				—				—				(382	)			2,284,472
Total						$	7,349,031			$	—			$	—			$	(382	)		$	7,349,413

		*December 31, 2024 (Audited)*
										*Allowance*				*Gross*				*Gross*
		*Level*								*for*				*Unrealized*				*Unrealized*
		*(1)*				*Fair Value*				*Credit Losses*				*Holding Gains*				*Holding Losses*				*Adjusted Cost*
Cash and Cash Equivalents
Cash						$	926,287			$	—			$	—			$	—			$	926,287
Money Market Funds ⁽²⁾			1				5,580,463				—				—				—				5,580,463
Subtotal							6,506,750				—				—				—				6,506,750
Short-Term Investment Securities⁽³⁾
Corporate Bonds ⁽⁴⁾⁽⁵⁾			2				2,756,428				—				—				(149	)			2,756,577
Total						$	9,263,178			$	—			$	—			$	(149	)		$	9,263,327