Accrued Expenses (Tables)

12 Months Ended

Mar. 31, 2020

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, 2020 and 2019:

	March 31,
	2020			2019
Warranty reserve, at beginning of period	$	118,014		$	111,983
Warranty expense		51,858			58,082
Warranty deductions		(51,138	)		(52,051	)
Warranty reserve, at end of period	$	118,734		$	118,014

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,
	2020		2019
Accrued vacation pay	$	336,039	$	325,647
Accrued profit sharing		110,894		-
Accrued compensation and payroll withholdings		65,799		68,649
	$	512,732	$	394,296

Other Liabilities [Member]

Accrued Expenses (Tables) [Line Items]

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses - other consist of the following:

	March 31,
	2020		2019
Accrued commissions	$	32,181	$	46,853
Accrued legal costs		47,772		30,000
Accrued consulting fees		5,050		164,059
Warranty reserve		118,734		118,014
Other		91,476		73,546
	$	295,213	$	432,472

Accrued Liabilities, Related Party [Member]

Accrued Expenses (Tables) [Line Items]

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses – related parties consists of the following:

	March 31,
	2020		2019
Interest and other expenses due to the Company’s President/CEO		-		3,017
	$	-	$	3,017