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Inventories and natural gas in storage (Tables)
3 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories on the Consolidated Balance Sheets were as follows:
 
March 31, 2019

March 31, 2018

December 31, 2018

 
(In thousands)
Aggregates held for resale
$
142,747

$
123,053

$
139,681

Asphalt oil
83,459

61,647

54,741

Materials and supplies
26,441

19,493

23,611

Merchandise for resale
25,104

16,378

22,552

Natural gas in storage (current)
11,464

10,936

22,117

Other
22,320

26,285

24,607

Total
$
311,535

$
257,792

$
287,309