CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net loss	$ (2,166)	$ (1,822)
Adjustments to reconcile net loss to net cash flows from operating activities
Depreciation	3,764	2,673
Amortization	10,422	7,522
Provision for doubtful accounts receivable	475	805
Deferred income taxes	(6,096)	3,223
Stock-based compensation expense	3,950	5,618
Excess tax benefit of stock options exercised	(1,308)	(1,936)
Other	1,044	(1,322)
Changes in operating assets and liabilities, net of impact of acquisitions:
Billed and accrued receivables, net	30,671	21,988
Other current and noncurrent assets	(440)	(2,026)
Accounts payable	(9,215)	(543)
Accrued employee compensation	(12,281)	(28,412)
Accrued liabilities	(4,347)	(10,181)
Current income taxes	4,278	(12,189)
Deferred revenue	15,938	3,922
Other current and noncurrent liabilities	238	66
Net cash flows from operating activities	34,927	(12,614)
Cash flows from investing activities:
Purchases of property and equipment	(6,241)	(1,316)
Purchases of software and distribution rights	(2,764)	(776)
Acquisition of businesses, net of cash acquired	(264,202)	(270,948)
Net cash flows from investing activities	(273,207)	(273,040)
Cash flows from financing activities:
Proceeds from issuance of common stock	475	386
Proceeds from exercises of stock options	3,864	4,399
Excess tax benefit of stock options exercised	1,308	1,936
Repurchases of common stock		(6,241)
Repurchase of restricted stock and performance shares for tax withholdings	(5,520)	(2,237)
Proceeds from revolver portion of credit agreement		95,000
Proceeds from term portion of credit agreement	300,000	200,000
Repayment of term portion of credit agreement	(3,750)	(3,125)
Payments for debt issuance costs	(9,272)	(553)
Payment of acquired debt	(7,500)
Payments on debt and capital leases	(838)	(796)
Net cash flows from financing activities	278,767	288,769
Effect of exchange rate fluctuations on cash	(4,332)	867
Net increase in cash and cash equivalents	36,155	3,982
Cash and cash equivalents, beginning of period	76,329	197,098
Cash and cash equivalents, end of period	112,484	201,080
Supplemental cash flow information
Income taxes paid, net	1,398	11,816
Interest paid	$ 2,847	$ 1,740