CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 19,094	$ 26,970
Adjustments to reconcile net income to net cash provided by operating activities-
Depreciation	6,926	9,770
Amortization	16,924	18,757
Amortization of original issue discount	2,834	2,624
Loss on short-term investments and other	735	998
Gain on disposition of business operations	(222)
Deferred income taxes	766	6,533
Excess tax benefit of stock-based compensation awards	(1,984)	(542)
Stock-based employee compensation	7,714	7,518
Changes in operating assets and liabilities, net of acquired amounts:
Trade accounts receivable, net	(13,457)	10,382
Other current and non-current assets	(8,987)	(8,367)
Income taxes payable/receivable	(2,512)	(4,178)
Trade accounts payable and accrued liabilities	(12,353)	(16,763)
Deferred revenue	791	7,644
Net cash provided by operating activities	16,269	61,346
Cash flows from investing activities:
Purchases of property and equipment	(11,196)	(11,125)
Purchases of short-term investments	(85,014)	(98,883)
Proceeds from sale/maturity of short-term investments	109,138	41,361
Acquisition of and investments in client contracts	(3,296)	(3,808)
Proceeds from the disposition of business operations	630
Net cash provided by (used in) investing activities	10,262	(72,455)
Cash flows from financing activities:
Proceeds from issuance of common stock	661	921
Payment of cash dividends	(10,322)
Repurchase of common stock	(6,584)	(14,883)
Payments on acquired asset financing	(1,097)	(1,894)
Payments on long-term debt	(7,500)	(7,500)
Excess tax benefit of stock-based compensation awards	1,984	542
Net cash used in financing activities	(22,858)	(22,814)
Effect of exchange rate fluctuations on cash	(237)	(2,975)
Net increase (decrease) in cash and cash equivalents	3,436	(36,898)
Cash and cash equivalents, beginning of period	82,686	133,747
Cash and cash equivalents, end of period	86,122	96,849
Cash paid during the period for-
Interest	4,211	4,770
Income taxes	17,075	2,306
Non-cash financing activity -
Cash dividends payable		$ 5,069