Inventories and natural gas in storage (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories on the Consolidated Balance Sheets were as follows:

	June 30, 2018		June 30, 2017		December 31, 2017
	(In thousands)
Aggregates held for resale	$	131,784	$	123,316	$	115,268
Asphalt oil	64,560		46,852		30,360
Materials and supplies	24,688		22,657		18,650
Merchandise for resale	17,502		16,164		14,905
Natural gas in storage (current)	13,774		14,126		20,950
Other	25,931		26,755		26,450
Total	$	278,239	$	249,870	$	226,583