Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

The following tabulation shows certain quarterly financial data for 2019 and 2018 (in thousands, except per share amounts):

	Quarter
2019	1		2		3		4
Service revenues	$	1,468,530	$	1,516,385	$	1,552,132	$	1,537,385
Gross margin	$	607,588	$	637,541	$	646,446	$	638,944
Income before income taxes	$	147,383	$	160,103	$	163,782	$	154,247
Net income	$	109,798	$	114,612	$	117,181	$	112,842
Basic net income per share	$	.94	$	.98	$	1.02	$	.99
Diluted net income per share	$	.93	$	.98	$	1.01	$	.98

	Quarter
2018	1		2		3		4
Service revenues	$	1,395,333	$	1,457,054	$	1,466,226	$	1,481,658
Gross margin	$	572,366	$	607,118	$	610,468	$	620,062
Income before income taxes	$	134,639	$	150,075	$	151,905	$	154,983
Net income	$	96,167	$	109,315	$	115,242	$	113,564
Basic net income per share	$	.79	$	.90	$	.96	$	.96
Diluted net income per share	$	.78	$	.89	$	.95	$	.95