COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS, NET (Tables)

9 Months Ended

Jan. 31, 2021

Contractors [Abstract]

Costs and Estimated Earnings in Excess of Billings, Net [Table Text Block]

At January 31, 2021 and April 30, 2020, costs and estimated earnings in excess of billings, net, consisted of the following:

	January 31, 2021			April 30, 2020
	(In thousands)
Costs and estimated earnings in excess of billings	$	11,265		$	10,460
Billings in excess of costs and estimated earnings		(10,978	)		(3,507	)
Net asset	$	287		$	6,953