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Inventories
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories in the accompanying Consolidated Balance Sheets consisted of the following amounts as of March 31, 2022 and December 31, 2021 (in thousands):
March 31,
2022
December 31,
2021
Raw materials and construction materials$60,339 $46,186 
Work in process11,124 7,912 
Inventories$71,463 $54,098