CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ 5,462	$ (285)
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Depreciation	10,558	7,964
Amortization	30,591	23,142
Amortization of deferred debt issuance costs	2,680	2,516
Deferred income taxes	(12,134)	(6,776)
Stock-based compensation expense	9,188	7,724
Excess tax benefit of stock options exercised	(4,382)	(1,681)
Other	671	2,035
Changes in operating assets and liabilities, net of impact of acquisitions:
Receivables	(9,279)	22,028
Accounts payable	(3,203)	(10,731)
Accrued employee compensation	659	(8,012)
Current income taxes	4,728	3,780
Deferred revenue	20,337	21,737
Other current and noncurrent assets and liabilities	(7,553)	(5,810)
Net cash flows from operating activities	48,323	57,631
Cash flows from investing activities:
Purchases of property and equipment	(8,319)	(9,050)
Purchases of software and distribution rights	(6,991)	(4,578)
Acquisition of businesses, net of cash acquired		(264,202)
Other	(1,500)
Net cash flows from investing activities	(16,810)	(277,830)
Cash flows from financing activities:
Proceeds from issuance of common stock	1,338	938
Proceeds from exercises of stock options	4,117	5,583
Excess tax benefit of stock options exercised	4,382	1,681
Repurchases of common stock	(70,000)	(12,068)
Repurchase of restricted stock and performance shares for tax withholdings	(4,533)	(5,574)
Proceeds from term portion of credit agreement		300,000
Proceeds from revolving credit facility	50,000
Repayment of revolving credit facility	(35,000)
Repayment of term portion of credit agreement	(17,742)	(13,125)
Payments on other debt and capital leases	(6,687)	(11,717)
Payment for debt issuance costs	(163)	(9,536)
Distribution to noncontrolling interest	(1,391)
Net cash flows from financing activities	(75,679)	256,182
Effect of exchange rate fluctuations on cash	4,089	(4,571)
Net increase (decrease) in cash and cash equivalents	(40,077)	31,412
Cash and cash equivalents, beginning of period	95,059	76,329
Cash and cash equivalents, end of period	54,982	107,741
Supplemental cash flow information
Income taxes paid, net	13,176	7,668
Interest paid	$ 15,630	$ 7,315