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Inventories and natural gas in storage (Tables)
9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories on the Consolidated Balance Sheets were as follows:
 September 30, 2022September 30, 2021December 31, 2021
 (In thousands)
Aggregates held for resale$198,711 $183,693 $184,363 
Asphalt oil56,609 32,964 57,002 
Natural gas in storage (current)48,532 28,683 18,867 
Materials and supplies42,359 27,253 30,629 
Merchandise for resale39,198 26,639 28,501 
Other13,233 13,053 16,247 
Total$398,642 $312,285 $335,609