Accrued Expenses (Tables)

12 Months Ended

Mar. 31, 2022

Accrued Expenses (Tables) [Line Items]

Schedule of Product Warranty Liability [Table Text Block]

The following table provides a summary of the changes in warranty reserves for the years ended March 31, 2022, and 2021:

	March 31,
	2022			2021
Warranty reserve, at beginning of period	$	90,752		$	118,734
Warranty expense		38,236			64,092
Warranty deductions		(41,581	)		(92,074	)
Warranty reserve, at end of period	$	87,407		$	90,752

Accrued Employee Related Liabilities [Member]

Accrued Expenses (Tables) [Line Items]

Schedule of Accrued Liabilities [Table Text Block]

Accrued vacation pay, payroll and payroll withholdings consist of the following:

	March 31,
	2022		2021
Accrued vacation pay	$	185,735	$	403,759
Accrued profit sharing		163,132		-
Accrued compensation and payroll withholdings		61,671		53,473
	$	410,538	$	457,232

Other Liabilities [Member]

Accrued Expenses (Tables) [Line Items]

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses - other consist of the following:

	March 31,
	2022		2021
Accrued commissions	$	11,706	$	14,918
Accrued legal costs		6,061		10,519
Warranty reserve		87,407		90,752
Accrued purchase		39,021		218,032
Other		29,950		31,754
	$	174,145	$	365,975