Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (Unaudited)

Selected Quarterly Financial Data (Unaudited)

	December 31		September 30		June 30		March 31
	(in thousands, except for per share data)
2015
Total revenues	$	1,823,333	$	1,738,355	$	1,644,694	$	1,573,129
Gross profit	573,968		564,397		522,942		526,728
Net income	43,178		29,432		26,335		23,696
Earnings per share:
Basic	$	0.10	$	0.07	$	0.06	$	0.06
Diluted	0.10		0.07		0.06		0.05
2014
Total revenues	$	1,484,728	$	1,409,432	$	1,340,407	$	1,270,089
Gross profit	470,396		455,038		425,559		400,903
Net income	83,371		59,295		71,018		53,115
Earnings per share:
Basic	$	0.20	$	0.14	$	0.17	$	0.13
Diluted	0.19		0.14		0.16		0.12