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Inventories and natural gas in storage
9 Months Ended
Sep. 30, 2024
Inventory Disclosure [Abstract]  
Inventories and natural gas in storage Inventories and natural gas in storage
Natural gas in storage for the Company's regulated operations is generally valued at lower of cost or market using the last-in, first-out method or lower of cost or net realizable value using the average cost or first-in, first-out method. The majority of all other inventories are valued at the lower of cost or net realizable value using the average cost method. The portion of the cost of natural gas in storage expected to be used within 12 months was included in inventories. Inventories on the Consolidated Balance Sheets were as follows:
 September 30, 2024September 30, 2023December 31, 2023
 (In thousands)
Natural gas in storage (current)$40,770 $29,821 $39,377 
Merchandise for resale38,311 36,815 34,955 
Materials and supplies6,264 7,824 5,460 
Other6,544 5,775 7,600 
Total$91,889 $80,235 $87,392 
The remainder of natural gas in storage, which largely represents the cost of gas required to maintain pressure levels for normal operating purposes, was included in noncurrent assets - other and was $50.1 million, $47.4 million and $48.5 million at September 30, 2024 and 2023 and December 31, 2023, respectively.