Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Summary of the components of discontinued operations activity

The following table summarizes the components of discontinued operations activity:

	Years Ended December 31,
	2015		2014		2013
	(Thousands)
Operating revenues	$	—	$	—	$	332,947
Income from discontinued operations before income taxes	—		2,377		251,378
Income taxes	—		1,006		159,535
Income from discontinued operations, net of tax	$	—	$	1,371	$	91,843