Revolving Bank Loan Facility	3 Months Ended
Revolving Bank Loan Facility	Mar. 31, 2013
Debt Disclosure [Abstract]
Revolving Bank Loan Facility	Revolving Bank Loan Facility At March 31, 2013, the Company had a $45.0 million revolving loan facility from a U.S. banking institution to provide for working capital needs and for other general corporate purposes. The revolving loan facility is secured by any cash distributed in respect of the Company’s investment in the U.S. based merchant banking funds and cash distributions from G&Co. In addition, the revolving loan facility has a prohibition on the incurrence of additional indebtedness without the prior approval of the lender and the Company is required to comply with certain financial and liquidity covenants. The weighted average daily borrowings outstanding under the revolving loan facility were approximately $34.3 million and $27.7 million for the three month periods ended March 31, 2013 and 2012, respectively. The weighted average interest rate was 3.25% and 4.0% for the three months ended March 31, 2013 and 2012, respectively. At March 31, 2013, the Company was compliant with all loan covenants. Effective May 1, 2013, the Company extended the maturity date of the revolving loan facility. See "Note 11 - Subsequent Events".

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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