CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 41,669	$ 21,194
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation	15,919	15,100
Amortization	54,929	48,174
Amortization of deferred debt issuance costs	4,754	4,207
Deferred income taxes	3,773	(9,637)
Stock-based compensation expense	10,050	13,742
Excess tax benefit of stock compensation	(4,852)	(10,416)
Gain on sale of available-for-sale securities	(24,465)
Other, net	2,467	2,006
Changes in operating assets and liabilities, net of impact of acquisitions:
Receivables	31,566	(17,010)
Accounts payable	(5,441)	(6,501)
Accrued employee compensation	7,141	(2,682)
Current income taxes	(8,080)	9,345
Deferred revenue	(4,813)	15,932
Other current and noncurrent assets and liabilities	(5,626)	(11,471)
Net cash flows from operating activities	118,991	71,983
Cash flows from investing activities:
Purchases of property and equipment	(19,546)	(11,755)
Purchases of software and distribution rights	(12,017)	(14,227)
Proceeds from sale of available-for-sale equity securities	35,311
Acquisition of businesses, net of cash acquired		(204,290)
Other	(7,000)	(1,500)
Net cash flows from investing activities	(3,252)	(231,772)
Cash flows from financing activities:
Proceeds from issuance of common stock	2,298	2,042
Proceeds from exercises of stock options	11,554	11,106
Excess tax benefit of stock compensation	4,852	10,416
Repurchases of common stock		(70,000)
Repurchase of restricted stock and performance shares for tax withholdings	(4,553)	(4,975)
Proceeds from term portion of credit agreement		150,000
Proceeds from revolving credit facility	112,000	149,500
Repayment of revolving credit facility	(156,000)	(71,000)
Repayment of term portion of credit agreement	(63,530)	(37,596)
Payments on other debt	(11,785)	(7,912)
Payment for debt issuance costs		(4,544)
Distribution to noncontrolling interest		(1,391)
Net cash flows from financing activities	(105,164)	125,646
Effect of exchange rate fluctuations on cash	(7,019)	(845)
Net increase (decrease) in cash and cash equivalents	3,556	(34,988)
Cash and cash equivalents, beginning of period	77,301	95,059
Cash and cash equivalents, end of period	80,857	60,071
Supplemental cash flow information
Income taxes paid, net	17,169	18,952
Interest paid	$ 31,424	$ 28,996