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Related Party Transactions
12 Months Ended
Dec. 31, 2011
Related Party Transactions  
Related Party Transactions

(17) Related Party Transactions

        In April 2010, the Company made a strategic minority investment in DI, a provider of independent research and diligence to the investment community. As part of the investment, the Company obtained certain distribution rights with respect to DI's products. During 2011 and 2010, ITG paid DI $0.3 million and $0.2 million, respectively, for this research.