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Inventories
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories INVENTORIES
Inventories in the accompanying Consolidated Balance Sheets consisted of the following amounts as of December 31, 2021 and 2020 (in thousands):
December 31, 2021December 31, 2020
Raw materials and construction materials$46,186 $42,240 
Work in process7,912 11,098 
Inventories$54,098 $53,338