Accrued Liabilities (Tables)

12 Months Ended

Apr. 30, 2021

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities at April 30, 2021 and 2020, respectively, consisted of the following (in thousands):

	2021		2020
Vacation and other compensation	$	1,564	$	1,437
Incentive compensation		550		107
Payroll taxes		167		379
Warranty reserve		439		527
Commissions		329		345
Deferred compensation payable		704		704
Other		1,492		1,187
	$	5,245	$	4,686