Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data [Abstract]

Schedule of quarterly financial information (unaudited)

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
	(In thousands, except per share amounts)
2015
Net revenues	$	760,802	$	796,759	$	813,270	$	904,763	$	3,275,594
Gross margin	628,196		664,008		667,016		702,010		2,661,230
Income from operations	51,732		122,149		63,798		112,406		350,085
Net income	28,887		103,275		55,925		131,274		319,361
Earnings per share - basic	0.18		0.64		0.35		0.85		2.01
Earnings per share - diluted	0.18		0.64		0.35		0.84		1.99
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
	(In thousands, except per share amounts)
2014
Net revenues	$	750,819	$	781,560	$	758,994	$	851,483	$	3,142,856
Gross margin	616,493		606,304		623,009		676,831		2,522,637
Income from operations	71,887		54,419		58,597		117,408		302,311
Net income	55,939		53,024		47,532		95,228		251,723
Earnings per share - basic	0.30		0.31		0.29		0.59		1.48
Earnings per share - diluted	0.30		0.31		0.29		0.58		1.47