CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net service revenues	$ 1,028,383	$ 937,966	$ 2,043,827	$ 1,818,835
Direct costs of services, consisting of payroll, payroll taxes, insurance costs and reimbursable expenses	613,080	565,678	1,226,441	1,108,458
Gross margin	415,303	372,288	817,386	710,377
Selling, general and administrative expenses	343,264	311,202	665,282	604,888
Amortization of intangible assets	52	40	87	79
Interest income, net	(285)	(238)	(519)	(450)
Income before income taxes	72,272	61,284	152,536	105,860
Provision for income taxes	26,943	24,859	58,873	42,730
Net income	45,329	36,425	93,663	63,130
Net income available to common stockholders-diluted	$ 45,101	$ 35,890	$ 93,171	$ 62,194
Net income per share (Note J):
Basic	$ 0.33	$ 0.25	$ 0.67	$ 0.44
Diluted	$ 0.32	$ 0.25	$ 0.67	$ 0.43
Shares:
Basic	138,588	141,286	138,986	141,966
Diluted	139,739	142,585	140,036	143,357
Cash dividends declared per share	$ 0.15	$ 0.14	$ 0.30	$ 0.28