Inventories and natural gas in storage (Tables)

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of:

	June 30, 2015		June 30, 2014		December 31, 2014
	(In thousands)
Aggregates held for resale	$	123,457	$	112,129	$	108,161
Asphalt oil	79,422		76,525		42,135
Materials and supplies	22,594		58,089		54,282
Merchandise for resale	16,140		25,507		24,420
Refined products	16,065		—		—
Natural gas in storage (current)	11,310		10,903		19,302
Crude oil	8,101		—		5,045
Other	37,316		35,420		36,065
Total	$	314,405	$	318,573	$	289,410