Note 5 - Accounts Receivable, Net, Contract Asset and Contract Liability (Tables)

6 Months Ended

Oct. 31, 2021

Notes Tables

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	October 31,		April 30,
	2021		2021
Accounts Receivable, net	$	3,566	$	1,961
Contract Asset		1,101		421
Contract Liability		1,245		5,798