Property, Plant, and Equipment (Tables)

12 Months Ended

Jun. 30, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

	June 30, 2022		June 30, 2021
	(In thousands)
Property, plant and equipment - at cost:
Land and buildings	$	34,788	$	41,633
Construction equipment	93,036		94,453
Transportation equipment	48,999		50,510
Office equipment and software	43,823		42,706
Construction in progress	1,646		493
Total property, plant and equipment - at cost	222,292		229,795
Accumulated depreciation	(168,423)		(160,388)
Property, plant and equipment - net	$	53,869	$	69,407

Long-lived Assets by Geographic Areas [Table Text Block]

Geographical Disaggregation of Long-Lived Assets

	Long-Lived Assets
	June 30, 2022		June 30, 2021		June 30, 2020
	(In thousands)
United States	$	137,682	$	157,442	$	164,056
Canada	3,436		6,523		5,659
Other international	12,263		12,372		12,435
	$	153,381	$	176,337	$	182,150