Revenue (Tables)

12 Months Ended

Jun. 30, 2021

Revenue [Abstract]

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

	June 30, 2021		June 30, 2020		Change
	(In thousands)
Costs and estimated earnings in excess of billings on uncompleted contracts	$	30,774	$	59,548	$	(28,774)
Billings on uncompleted contracts in excess of costs and estimated earnings	(53,832)		(63,889)		10,057
Net contract liabilities	$	(23,058)	$	(4,341)	$	(18,717)

Disaggregation of Revenue [Table Text Block]

Geographic Disaggregation:

	Fiscal Years Ended
	June 30, 2021		June 30, 2020		June 30, 2019
	(In thousands)
United States	$	604,739	$	1,020,083	$	1,367,844
Canada	61,703		70,133		41,410
Other international	6,956		10,722		7,426
Total	$	673,398	$	1,100,938	$	1,416,680

Contract Type Disaggregation:

	Fiscal Years Ended
	June 30, 2021		June 30, 2020		June 30, 2019
	(In thousands)
Fixed-price contracts	$	444,042	$	685,559	$	748,007
Time and materials and other cost reimbursable contracts	229,356		415,379		668,673
Total	$	673,398	$	1,100,938	$	1,416,680