Revenue (Tables)

12 Months Ended

Jun. 30, 2023

Revenue [Abstract]

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

	June 30, 2023		June 30, 2022		Change
	(In thousands)
Costs and estimated earnings in excess of billings on uncompleted contracts	$	44,888	$	44,752	$	136
Billings on uncompleted contracts in excess of costs and estimated earnings	(85,436)		(65,106)		(20,330)
Net contract liabilities	$	(40,548)	$	(20,354)	$	(20,194)

Disaggregation of Revenue [Table Text Block]

Geographic Disaggregation:

	Fiscal Years Ended
	June 30, 2023		June 30, 2022		June 30, 2021
	(In thousands)
United States	$	720,140	$	640,512	$	604,739
Canada	61,691		63,045		61,703
Other international	13,189		4,223		6,956
Total	$	795,020	$	707,780	$	673,398

Contract Type Disaggregation:

	Fiscal Years Ended
	June 30, 2023		June 30, 2022		June 30, 2021
	(In thousands)
Fixed-price contracts	$	419,426	$	421,188	$	444,042
Time and materials and other cost reimbursable contracts	375,594		286,592		229,356
Total	$	795,020	$	707,780	$	673,398