Accrued Liabilities (Tables)

12 Months Ended

Apr. 30, 2020

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities at April 30, 2020 and 2019, respectively, consisted of the following (in thousands):

	2020		2019
Vacation and other compensation	$	1,437	$	1,659
Incentive compensation		107		346
Payroll taxes		379		155
Warranty reserve		527		529
Commissions		345		378
Other		1,187		504
	$	3,982	$	3,571