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Acquisition and Transition Costs and Special Charges	12 Months Ended
Acquisition and Transition Costs and Special Charges	Dec. 31, 2013
Text Block [Abstract]
Acquisition and Transition Costs and Special Charges	Acquisition and Transition Costs and Special Charges Acquisition and Transition Costs The Company recognized $58, $840 and $3,465 for the years ended December 31, 2013, 2012 and 2011, respectively, as Acquisition and Transition Costs incurred in connection with acquisitions and other ongoing business development initiatives. These costs are primarily comprised of professional fees for legal and other services. Acquisition and Transition Costs included expenses of $2,118 for the year ended December 31, 2011, related to the Company’s acquisition of The Lexicon Partnership LLP ("Lexicon"). Special Charges The Company recognized costs of $170 for the year ended December 31, 2013, as Special Charges incurred related to the write-off of client-related intangible assets in EWM. See Note 4 for further information. The Company recognized costs of $662 for the year ended December 31, 2012, as Special Charges incurred in connection with exiting facilities in the UK, and $3,894 for the year ended December 31, 2011, as Special Charges incurred in connection with the Lexicon acquisition, including the exiting of a lease commitment for office space of $731, an introducing fee of $1,895, as well as other professional fees incurred by Lexicon of $1,268.