Condensed Consolidated Statements of Cash Flow (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 37,512	$ 26,394
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,868	2,880
Share-based Compensation	1,143	905
Provision for doubtful accounts	337	203
Provision for deferred taxes	(2,827)	(369)
Debt discount amortization on convertible debt	21	211
Unrealized foreign exchange gain on forward contracts	(238)	(49)
Foreign currency transaction gain (loss)	(1,769)	(530)
(Gain) loss on put option	925	(1,499)
Reduction of acquisition earnout accruals	(1,868)	0
Changes in assets and liabilities, net of effects from acquisitions:
Accounts receivable	(3,693)	(1,795)
Other assets	825	387
Accounts payable and accrued expenses	(3,482)	(1,926)
Accrued payroll and related benefits	(850)	(709)
Deferred revenue	(781)	(303)
Deferred rent	(120)	(31)
Other current liabilities	867	33
Net cash provided by operating activities	29,870	23,802
Cash flows from investing activities:
Investment, net of cash acquired	(184)	(2,975)
Purchases of marketable securities, net	(3,080)	(5,701)
Maturities of marketable securities, net	7,600	0
Capital expenditures	(1,335)	(899)
Net cash used in investing activities	6,149	(16,592)
Cash flows from financing activities:
Repayments on revolving line of credit, (net of proceeds)	(16,250)	(7,500)
Proceeds from term loan	16,250	10,000
Principal payments of term loan obligation	(3,074)	(2,344)
Repurchases of common stock	(26,198)	(4,999)
Settlement on conversion of convertible debt	(6,761)	0
Proceeds from the exercise of stock options	14	178
Payments of capital lease obligations	(186)	(552)
Net cash provided by/(used in) financing activities	(36,205)	(5,217)
Effect of foreign exchange rates on cash	416	(329)
Net change in cash and cash equivalents	230	1,664
Cash and cash equivalents at the beginning of the period	23,397	19,227
Cash and cash equivalents at the end of the period	23,627	20,891
Supplemental disclosures of cash flow information:
Interest paid	361	276
Income taxes paid	1,505	1,275
ADAM
Cash flows from investing activities:
Acquisition of Businesses, net of cash acquired	3,529	0
MCN
Cash flows from investing activities:
Investment, net of cash acquired	(381)	(2,931)
Trades Monitor [Member]
Cash flows from investing activities:
Acquisition of Businesses, net of cash acquired	0	(2,749)
Connective Technologies
Cash flows from investing activities:
Acquisition of Businesses, net of cash acquired	$ 0	$ (1,337)