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Property, Plant, and Equipment (Tables)
6 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
The following table presents the components of our property, plant and equipment - net at December 31, 2022 and June 30, 2022:
December 31,
2022
June 30,
2022
(In thousands)
Property, plant and equipment - at cost:
Land and buildings$36,391 $34,788 
Construction equipment91,954 93,036 
Transportation equipment48,908 48,999 
Office equipment and software41,984 43,823 
Construction in progress828 1,646 
Total property, plant and equipment - at cost220,065 222,292 
Accumulated depreciation(169,381)(168,423)
Property, plant and equipment - net$50,684 $53,869