Cash flow information (Tables)

6 Months Ended

Jun. 30, 2015

Supplemental Cash Flow Information [Abstract]

Supplemental cash flow information

Cash expenditures for interest and income taxes were as follows:

	Six Months Ended
	June 30,
	2015		2014
	(In thousands)
Interest, net of amounts capitalized and AFUDC - borrowed of $5.0 million and $5.7 million in 2015 and 2014, respectively	$	45,102	$	39,384
Income taxes paid, net	$	3,117	$	56,267

Noncash investing transactions were as follows:

	June 30,
	2015		2014
	(In thousands)
Property, plant and equipment additions in accounts payable	$	13,467	$	47,499