XML 56 R45.htm IDEA: XBRL DOCUMENT v3.22.1
Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]    
Raw materials and construction materials $ 60,339 $ 46,186
Work in process 11,124 7,912
Inventories $ 71,463 $ 54,098