Quarterly Financial Data

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

Quarterly Financial Data

Note N—Quarterly Financial Data (Unaudited)

The following tabulation shows certain quarterly financial data for 2011 and 2010 (in thousands, except per share amounts):

	Quarter
2011	1		2		3		4
Net service revenues	$	880,869	$	937,966	$	984,668	$	973,473
Gross margin	$	338,089	$	372,288	$	391,903	$	387,322
Income before income taxes	$	44,576	$	61,284	$	72,195	$	72,161
Net income	$	26,705	$	36,425	$	44,168	$	42,624
Net income available to common stockholders - diluted	$	26,293	$	35,890	$	43,556	$	42,037
Basic net income per share	$	.18	$	.25	$	.31	$	.30
Diluted net income per share	$	.18	$	.25	$	.31	$	.30
	Quarter
2010	1		2		3		4
Net service revenues	$	737,173	$	769,090	$	817,258	$	851,572
Gross margin	$	268,128	$	289,858	$	309,140	$	326,907
Income before income taxes	$	12,265	$	22,387	$	37,268	$	43,248
Net income	$	8,475	$	12,181	$	20,623	$	24,790
Net income available to common stockholders - diluted	$	7,626	$	11,660	$	20,099	$	24,144
Basic net income per share	$	.05	$	.08	$	.14	$	.17
Diluted net income per share	$	.05	$	.08	$	.14	$	.17