Cash flow information (Tables)

3 Months Ended

Mar. 31, 2015

Supplemental Cash Flow Information [Abstract]

Supplemental cash flow information

Cash expenditures for interest and income taxes were as follows:

	Three Months Ended
	March 31,
	2015			2014
	(In thousands)
Interest, net of amounts capitalized and AFUDC - borrowed of $2.6 million and $2.4 million in 2015 and 2014, respectively	$	23,874		$	20,850
Income taxes paid (refunded), net	$	(1,339	)	$	9,435

Noncash investing transactions were as follows:

	March 31,
	2015		2014
	(In thousands)
Property, plant and equipment additions in accounts payable	$	54,134	$	65,736