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Note F - Note Receivable (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

		December 31,
		2022				2021

Accounts receivable		$	2,096,569			$	1,234,411
Loss on foreign currency			-				(50,000	)
Allowance for doubtful accounts			(573,785	)			(213,785	)
Accounts receivable, net of allowances for doubtful accounts		$	1,522,784			$	970,626

		Balance at Beginning of Year				Charged to Costs and Expenses				Deductions from Reserves				Balance at End of Year

Year ended December 31, 2022 Allowance for Doubtful Accounts		$	213,785			$	360,000			$	-			$	573,785
Year ended December 31, 2021 Allowance for Doubtful Accounts		$	1,733,785			$	200,000			$	(1,720,000	)		$	213,785

Notes Receivable [Member]

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

		December 31,				December 31,
		2022				2021

Note receivable		$	195,000			$	295,000
Repayment of note			(9,000	)			-
Allowance for doubtful account			(186,000	)			(100,000	)
Note receivable, net of allowance			-				195,000
Current portion, net of allowance		$	-			$	82,000
Noncurrent portion, net of allowance		$	-			$	113,000