Consolidated and Condensed Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues:
Service revenues	$ 262,730	$ 217,057	$ 758,686	$ 600,631
Reimbursable expenses	11,152	11,525	30,548	30,375
Total gross revenues	273,882	228,582	789,234	631,006
Operating expenses:
Project personnel expenses	176,639	148,003	520,054	415,115
Reimbursable expenses	11,152	11,525	30,548	30,375
Total project personnel expenses and reimbursable expenses	187,791	159,528	550,602	445,490
Selling and marketing expenses	8,632	9,298	29,104	28,170
General and administrative expenses	44,337	38,443	126,418	110,821
Restructuring and other related charges	1,191	34	6,777	448
Amortization of purchased intangible assets	1,725	1,301	4,286	4,127
Acquisition costs and other related charges	1,082		1,305	111
Total operating expenses	244,758	208,604	718,492	589,167
Income from operations	29,124	19,978	70,742	41,839
Interest and other income, net	2,037	942	4,752	2,487
Income before income taxes	31,161	20,920	75,494	44,326
Provision for income taxes	12,059	6,645	29,030	16,208
Net income	$ 19,102	$ 14,275	$ 46,464	$ 28,118
Basic net income per share	$ 0.14	$ 0.11	$ 0.34	$ 0.21
Diluted net income per share	$ 0.13	$ 0.10	$ 0.33	$ 0.20
Weighted average common shares	138,679	132,774	137,539	131,517
Weighted average dilutive common share equivalents	3,929	6,469	4,221	6,796
Weighted average common shares and dilutive common share equivalents	142,608	139,243	141,760	138,313