Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 6,409	$ 19,034
Adjustments to reconcile net income to cash provided by operating activities
Loss/(Gain) on foreign currency exchange rates	1,908	(73)
Depreciation and amortization	6,684	8,747
Change in fair value of contingent liability		516
Deferred taxes	(1,080)	(2,921)
Net interest income		60
Amortization of deferred financing costs	51	65
Bad debt provision	216	776
Loss on disposal of fixed assets	34	3
Stock compensation expense	2,623	3,337
Changes in operating assets and liabilities:
Cash and cash equivalents held for customers	(10,760)	(28,176)
Short term investments		(7)
Trading securities		20,000
Receivables from banks and brokers	1,000	19,581
Prepaid assets	1,637	(451)
Other assets	(150)	1,878
Payables to customers	15,262	17,954
Accrued compensation and benefits	(97)	(1,979)
Payables to brokers, dealers, FCMs and other regulated entities	(4,750)	9,460
Accrued expenses and other liabilities	61	2,647
Income tax payable	46	4,443
Cash provided by operating activities	19,094	74,894
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(6,486)	(2,872)
Purchase of treasury bills	(44,954)
Acquisition and funding of OEC, net of cash acquired	(6,813)
Purchase of intangible assets		(2,547)
Cash used for investing activities	(58,253)	(5,419)
CASH FLOWS FROM FINANCING ACTIVITIES:
Contractual payments for acquired assets	(1,818)	(1,529)
Payment on notes payable	(7,875)	(7,875)
Proceeds from exercise of stock options	1,873	536
Proceeds from exercise of warrants		1,270
Proceeds from employee stock purchase plan	216	165
Purchase of treasury stock	(1,439)	(3,275)
Tax benefit from employee stock option exercises	(24)
Dividend payment	(5,212)
Cash used for financing activities	(14,279)	(10,708)
Effect of exchange rate changes on cash and cash equivalents	868	(1,533)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(52,570)	57,234
CASH AND CASH EQUIVALENTS - Beginning of period	60,221	27,535
CASH AND CASH EQUIVALENTS - End of period	7,651	84,769
Cash paid during the year for:
Interest	189	888
Taxes	3,279	4,925
Non-cash investing activities:
Purchase of fixed assets in accrued expense and other liabilities	835	63
Financing of assets and business acquisitions	$ 2,593	$ 7,154