CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 24,327	$ 42,270
Adjustments to reconcile net income to net cash provided by operating activities-
Depreciation	10,479	14,379
Amortization	25,207	28,413
Amortization of original issue discount	4,294	3,975
Loss on short-term investments and other	973	1,264
Gain on disposition of business operations	(222)
Deferred income taxes	(25)	1,083
Excess tax benefit of stock-based compensation awards	(2,044)	(619)
Stock-based employee compensation	12,250	11,497
Changes in operating assets and liabilities, net of acquired amounts:
Trade accounts receivable, net	(15,559)	75
Other current and non-current assets	(5,866)	(4,641)
Income taxes payable/receivable	(1,825)	1,359
Trade accounts payable and accrued liabilities	(16,369)	(15,724)
Deferred revenue	286	3,251
Net cash provided by operating activities	35,906	86,582
Cash flows from investing activities:
Purchases of property and equipment	(21,406)	(18,986)
Purchases of short-term investments	(126,982)	(129,259)
Proceeds from sale/maturity of short-term investments	146,417	62,720
Acquisition of and investments in client contracts	(4,235)	(5,349)
Proceeds from the disposition of business operations	1,130	1,734
Net cash used in investing activities	(5,076)	(89,140)
Cash flows from financing activities:
Proceeds from issuance of common stock	1,053	1,283
Payment of cash dividends	(15,461)	(9,630)
Repurchase of common stock	(11,456)	(15,124)
Payments on acquired asset financing	(1,097)	(1,894)
Payments on long-term debt	(11,250)	(11,250)
Excess tax benefit of stock-based compensation awards	2,044	619
Net cash used in financing activities	(36,167)	(35,996)
Effect of exchange rate fluctuations on cash	(1,776)	(2,457)
Net decrease in cash and cash equivalents	(7,113)	(41,011)
Cash and cash equivalents, beginning of period	82,686	133,747
Cash and cash equivalents, end of period	75,573	92,736
Cash paid during the period for-
Interest	7,331	8,247
Income taxes	$ 21,718	$ 3,554