Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2022

Notes to Financial Statements

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

			Additions
Description	Balance at Beginning of Period		Charged to Costs and Expenses		Deductions			Balance at End of Period
Year Ended December 31, 2021
Reserve for doubtful accounts	$	19,973	$	55,417	$	-		$	75,390
Reserve for inventory obsolescence		315,345		137,262		-			452,607
Reserve for product warranty		205,000		190,097		(364,714	)		30,383
Valuation allowance for deferred taxes		47,319		-		-			47,319
Reserve for uncertain tax positions	$	425,000	$	165,000	$	-		$	590,000
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