Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2015

Selected Quarterly Financial Information [Abstract]

Schedule Of Quarterly Financial Information

	Quarter
(In thousands, except per share data)	First		Second		Third		Fourth		Total
2015
Revenue	$	696,245	$	762,151	$	779,474	$	734,572	$	2,972,442
Operating income	103,565		140,899		139,854		113,922		498,240
Net income	62,524		85,574		84,368		72,224		304,690
Earnings per share:
Basic and diluted	0.73		1.00		0.99		0.85		3.57
2014
Revenue	$	620,276	$	702,987	$	743,586	$	721,048	$	2,787,897
Operating income	80,052		122,695		126,262		112,298		441,307
Net income	45,887		73,849		77,909		69,869		267,514
Earnings per share:
Basic and diluted	0.53		0.86		0.90		0.81		3.10