CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
ASSETS
Valuation allowance on deferred tax assets	$ 44,450	$ 53,973
Property and equipment, accumulated depreciation	$ 2,958	$ 2,850
Equity:
Preferred Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	200,000,000	200,000,000
Preferred Stock, Shares Outstanding (in shares)	0	0
Common Class A [Member]
Equity:
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	750,000,000	750,000,000
Common Stock, Shares Issued (in shares)	12,210,366	12,158,057
Common Stock, Shares Outstanding (in shares)	12,210,366	12,158,057
Common Class B [Member]
Equity:
Common Stock, Par Value (in dollars per share)	$ 0.000001	$ 0.000001
Common Stock, Shares Authorized (in shares)	750,000,000	750,000,000
Common Stock, Shares Issued (in shares)	52,882,465	52,820,720
Common Stock, Shares Outstanding (in shares)	52,882,465	52,820,720