CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Assets
Deferred Tax Asset, Valuation Allowance	$ 58,661	$ 59,431
Property and Equipment, Accumulated Depreciation	$ 2,934	$ 2,727
Equity:
Preferred Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Authorized (in shares)	200,000,000	200,000,000
Preferred Stock, Outstanding (in shares)	0	0
Class A [Member]
Equity:
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Authorized (in shares)	750,000,000	750,000,000
Common Stock, Issued (in shares)	9,904,187	9,367,659
Common Stock, Outstanding (in shares)	9,904,187	9,367,659
Class B [Member]
Equity:
Common Stock, Par Value (in dollars per share)	$ 0.000001	$ 0.000001
Common Stock, Authorized (in shares)	750,000,000	750,000,000
Common Stock, Issued (in shares)	54,484,796	55,012,324
Common Stock, Outstanding (in shares)	54,484,796	55,012,324