Acquisition and Transition Costs and Intangible Asset Amortization	9 Months Ended
Sep. 30, 2014
Business Combinations [Abstract]
Acquisition and Transition Costs and Intangible Asset Amortization	Acquisition and Transition Costs, Special Charges and Intangible Asset Amortization Acquisition and Transition Costs The Company recognized $4,122 and $5,238 for the three and nine months ended September 30, 2014, respectively, and $58 for the nine months ended September 30, 2013 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. Special Charges The Company recognized $3,732 for the three and nine months ended September 30, 2014 as Special Charges incurred related to termination benefits, primarily consisting of cash severance and the acceleration of the vesting of restricted stock units, as well as the write-off of leasehold improvements in the Institutional Equities business. Intangible Asset Amortization Expenses associated with the amortization of intangible assets for Investment Banking were $477 and $718 for the three and nine months ended September 30, 2014, respectively, and $204 and $612 for the three and nine months ended September 30, 2013, respectively, included within Depreciation and Amortization expense on the Unaudited Condensed Consolidated Statements of Operations. Expenses associated with the amortization of intangible assets for Investment Management were $940 and $4,190 for the three and nine months ended September 30, 2014, respectively, and $1,793 and $4,775 for the three and nine months ended September 30, 2013, respectively, included within Depreciation and Amortization expense on the Unaudited Condensed Consolidated Statements of Operations. During the third quarter of 2014, the Company acquired a 100% interest in a boutique advisory business for $6,900. The Company’s consideration for this transaction included the issuance of 72 LP units at closing and contingent consideration. The contingent consideration has a fair value of $3,391 and will be settled in the first quarter of 2017, based on the business exceeding certain performance targets. This transaction resulted in the Company recognizing goodwill of $3,401 and intangible assets relating to advisory backlog and client relationships of $2,450 and $1,050, respectively, recognized in the Investment Banking Segment. The intangible assets are being amortized over estimated useful lives of two years. The Company recognized $382 of amortization expense related to these intangible assets for the three months ended September 30, 2014.

Acquisition and Transition Costs, Special Charges and Intangible Asset Amortization

Acquisition and Transition Costs

The Company recognized $4,122 and $5,238 for the three and nine months ended September 30, 2014, respectively, and $58 for the nine months ended September 30, 2013 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.

Special Charges

The Company recognized $3,732 for the three and nine months ended September 30, 2014 as Special Charges incurred related to termination benefits, primarily consisting of cash severance and the acceleration of the vesting of restricted stock units, as well as the write-off of leasehold improvements in the Institutional Equities business.

Intangible Asset Amortization

Expenses associated with the amortization of intangible assets for Investment Banking were $477 and $718 for the three and nine months ended September 30, 2014, respectively, and $204 and $612 for the three and nine months ended September 30, 2013, respectively, included within Depreciation and Amortization expense on the Unaudited Condensed Consolidated Statements of Operations. Expenses associated with the amortization of intangible assets for Investment Management were $940 and $4,190 for the three and nine months ended September 30, 2014, respectively, and $1,793 and $4,775 for the three and nine months ended September 30, 2013, respectively, included within Depreciation and Amortization expense on the Unaudited Condensed Consolidated Statements of Operations.

During the third quarter of 2014, the Company acquired a 100% interest in a boutique advisory business for $6,900. The Company’s consideration for this transaction included the issuance of 72 LP units at closing and contingent consideration. The contingent consideration has a fair value of $3,391 and will be settled in the first quarter of 2017, based on the business exceeding certain performance targets. This transaction resulted in the Company recognizing goodwill of $3,401 and intangible assets relating to advisory backlog and client relationships of $2,450 and $1,050, respectively, recognized in the Investment Banking Segment. The intangible assets are being amortized over estimated useful lives of two years. The Company recognized $382 of amortization expense related to these intangible assets for the three months ended September 30, 2014.