Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Valuation And Qualifying Accounts Disclosure Table [Table Text Block]

			Additions
	Balance at		Charged to
	Beginning		Costs and					Balance at
Description	of Period		Expenses		Deductions			End of Period
Year Ended December 31, 2022
Reserve for doubtful accounts	$	75,390	$	68,241	$	-		$	143,631
Reserve for inventory obsolescence		452,607		905,340		-			1,357,947
Reserve for product warranty		30,383		432,906		(398,289	)		65,000
Valuation allowance for deferred taxes		47,319		-		(8,319	)		39,000
Reserve for uncertain tax positions	$	590,000	$	-	$	(414,000	)	$	176,000
Year Ended December 31, 2023
Reserve for doubtful accounts	$	143,631	$	-	$	(38,408	)	$	105,223
Reserve for inventory obsolescence		1,357,947		58,000		(738,167	)		677,780
Reserve for product warranty		65,000		709,409		(571,796	)		202,613
Valuation allowance for deferred taxes		39,000		-		(6,000	)		33,000
Reserve for uncertain tax positions	$	176,000	$	-	$	(121,000	)	$	55,000