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Inventories
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories in the accompanying Consolidated Balance Sheets consisted of the following amounts as of June 30, 2020 and December 31, 2019 (in thousands):
June 30,
2020
December 31,
2019
Raw materials and construction materials$28,576  $31,365  
Work in process12,014  9,081  
Inventories$40,590  $40,446