Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 30,886	$ 33,752
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,000	4,102
Benefit for deferred taxes	(14,119)	(956)
Share based compensation	996	1,059
Provision for doubtful accounts	527	316
Debt discount amortization on convertible debt	23	13
Unrealized foreign exchange (gain) loss	339	(593)
(Gain) loss on put option	1,344	(263)
Reduction of acquisition earnout accruals	(6,114)	0
Changes in assets and liabilities, net of effects from acquisitions:
Accounts receivable	(2,101)	2,163
Other assets	182	(1,009)
Accounts payable and accrued expenses	7,303	(858)
Accrued payroll and related benefits	1,296	(384)
Deferred revenue	(3,051)	(225)
Deferred rent	11	(56)
Other current liabilities	2,317	(2,338)
Net cash provided by operating activities	24,839	34,723
Cash flows from investing activities:
Maturities of marketable securities (net of purchases)	225	194
Purchases of marketable securities	0	0
Capital expenditures	(652)	(1,079)
Net cash used in investing activities	(8,144)	(49,097)
Cash flows from financing activities:
Repayments on revolving line of credit, (net of proceeds)	(5,000)	1,090
Proceeds from term loan	0	45,000
Principal payments of term loan obligation	(4,125)	(15,000)
Repurchases of common stock	(2,492)	(9,396)
Excess tax benefit from share-based compensation	0	50
Proceeds from the exercise of stock options	662	714
Forfeiture of certain shares to satisfy exercise costs and the recipients income tax obligations related to stock options exercised and restricted stock vested	(728)	0
Dividend payments	(2,794)	(3,296)
Principal payments of debt obligations	(624)	(600)
Payments of capital lease obligations	(155)	(165)
Net cash provided by/ (used in) financing activities	(15,256)	18,397
Effect of foreign exchange rates on cash	(2,494)	(2,406)
Net change in cash and cash equivalents	(1,055)	1,617
Cash and cash equivalents at the beginning of the period	36,449	23,696
Cash and cash equivalents at the end of the period	35,394	25,313
Supplemental disclosures of cash flow information:
Interest paid	635	567
Income taxes paid	11,830	4,842
Taimma [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(5,003)
Investment in acquisition	(2,250)	0
Qatarlyst [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(4,740)	0
MCN [Member]
Cash flows from investing activities:
Investment in acquisition	0	(1,537)
BSI [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(992)
Fintechnix [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(4,713)
Planetsoft [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(33,967)
USIX [Member]
Cash flows from investing activities:
Investment in acquisition	(727)	0
Curepet, Inc. [Member]
Cash flows from investing activities:
Investment in business	$ 0	$ (2,000)