Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 12,138	$ 12,186
Adjustments to reconcile net loss to net cash used in operating activites:
Depreciation and amortization	5,056	4,843
Equity-based compensation	11,736	11,390
Bad debt expense	1,347	809
Net deferred income taxes	6,151	5,364
Other	359	801
Changes in assets and liabilities providing/(using) cash:
Accounts receivable	(1,148)	5,316
Unbilled services	(18,317)	(4,823)
Prepaid expenses and other current assets	(285)	(1,699)
Other assets	(381)	728
Accounts payable and accrued expenses	(7,312)	(6,901)
Accrued compensation and benefits	(22,674)	(18,704)
Deferred revenues	1,520	(121)
Other liabilities	83	(27)
Net cash provided by/(used in) operating activities	(11,727)	9,162
Cash flows from investing activities:
Purchase of property and equipment	(4,012)	(3,561)
Business acquisitions, net of cash acquired	(5,891)	(11,807)
Purchase of investments	(3,250)	(2,975)
Net cash used in investing activities	(13,153)	(18,343)
Cash flows from financing activities:
Repurchases of Class A common stock	(13,649)	(8,177)
Dividends	(5,012)	(3,141)
Distributions and other payments to noncontrolling unitholders	(2,378)	(2,135)
Proceeds from exercises of IPO Options	267	82
Increase in restricted cash	0	(3,156)
Other	0	(3)
Net cash used in financing activities	(20,772)	(16,530)
Effect of exchange rate on cash and cash equivalents	1,799	(2,369)
Net decrease in cash and cash equivalents	(43,853)	(28,080)
Cash and cash equivalents at beginning of period	113,328	107,311
Cash and cash equivalents at end of period	$ 69,475	$ 79,231