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	$ 28,996	$ 30,886
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,993	5,000
Benefit for deferred taxes	(1,668)	(14,119)
Share based compensation	882	996
Provision for doubtful accounts	748	527
Debt discount amortization on convertible debt	18	23
Unrealized foreign exchange (gain) loss	517	339
(Gain) loss on put option	(315)	1,344
Reduction of acquisition earnout accruals	(1,762)	(6,114)
Changes in assets and liabilities, net of effects from acquisitions:
Accounts receivable	(2,992)	(2,101)
Other assets	917	182
Accounts payable and accrued expenses	(1,914)	7,303
Accrued payroll and related benefits	2,007	1,296
Deferred revenue	(1,128)	(3,051)
Deferred rent	(195)	11
Unrecognized tax benefits, period increase (decrease)	3,866	2,349
Loss Contingency Accrual, Period Increase (Decrease)	(4,218)	0
Other current liabilities	(128)	(32)
Net cash provided by operating activities	28,624	24,839
Cash flows from investing activities:
Maturities of marketable securities	0	225
Purchases of marketable securities	(567)	0
Capital expenditures	(13,852)	(652)
Net cash used in investing activities	(22,522)	(8,144)
Cash flows from financing activities:
Principal payments of term loan obligation	(4,813)	(4,125)
Repurchases of common stock	(2,234)	(2,492)
Excess tax benefit from share-based compensation	(3,200)	0
Proceeds from the exercise of stock options	788	662
Forfeiture of certain shares to satisfy exercise costs and the recipients income tax obligations related to stock options exercised and restricted stock vested	(30)	(728)
Dividend payments	(5,793)	(2,794)
Principal payments of debt obligations	(321)	(624)
Payments of capital lease obligations	(103)	(155)
Repayments of Lines of Credit	(15,000)	(5,000)
Net cash used in financing activities	(30,706)	(15,256)
Effect of foreign exchange rates on cash	833	(2,494)
Net change in cash and cash equivalents	(23,771)	(1,055)
Cash and cash equivalents at the beginning of the period	56,674	36,449
Cash and cash equivalents at the end of the period	32,903	35,394
Supplemental disclosures of cash flow information:
Interest paid	436	635
Income taxes paid	6,774	11,830
Qatarlyst [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(4,740)
Healthcare Magic [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(5,856)	0
Curepet, Inc. [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	3	0
USIX [Member]
Cash flows from investing activities:
Payments for (Proceeds from) Previous Acquisition	0	(727)
Taimma [Member]
Cash flows from investing activities:
Payments for (Proceeds from) Previous Acquisition	$ (2,250)	$ (2,250)