Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jun. 30, 2022
Property, Plant and Equipment, Gross [Abstract]
Land and buildings	$ 36,391	$ 34,788
Construction equipment	91,954	93,036
Transportation equipment	48,908	48,999
Office equipment and software	41,984	43,823
Construction in progress	828	1,646
Total property, plant and equipment - at cost	220,065	222,292
Accumulated depreciation	(169,381)	(168,423)
Property, plant and equipment, net	$ 50,684	$ 53,869

Office Equipment and Capitalized Computer Software Gross

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Transportation Equipment Gross

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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