SELECTED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2016

Schedule of Selected Quarterly Financial Information

Selected quarterly financial information for each of the quarters in the years ended December 31, 2016 and 2015 is as follows (in thousands, except per share data):

	March 31, 2016		June 30, 2016		September 30, 2016		December 31, 2016
Revenue	$	447,385	$	463,331	$	474,935	$	464,134
Operating income		64,928		77,176		73,953		80,359
Net income		46,307		57,583		55,340		60,689
Basic earnings per share:
Net income	$	0.39	$	0.49	$	0.47	$	0.52
Diluted earnings per share:
Net income	$	0.39	$	0.49	$	0.47	$	0.52

	March 31, 2015		June 30, 2015		September 30, 2015		December 31, 2015
Revenue	$	426,000	$	459,295	$	459,957	$	447,835
Operating income		68,826		79,753		65,436		66,539
Net income		57,277		65,303		50,676		48,598
Basic earnings per share:
Net income	$	0.49	$	0.56	$	0.43	$	0.41
Diluted earnings per share:
Net income	$	0.49	$	0.55	$	0.43	$	0.41