Share-Based Compensation and Employee Ownership Plans - RCG Grants (Details) (RCG Grants [Member], Restricted Shares [Member], USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
RCG Grants [Member] | Restricted Shares [Member]
Nonvested RCG Grants
Balance outstanding, beginning of period, shares	1,298,213
Granted, shares	0
Vested, shares	0
Forfeited, shares	(13,613)	[1]
Balance outstanding, end of period, shares	1,284,600
Weighted-Average Grant Date Fair Value
Balance outstanding, beginning of period, in dollars per share	$ 7.30
Granted, in dollars per share	$ 0.00
Vested, in dollars per share	$ 0.00
Forfeited, in dollars per share	$ 7.30
Balance outstanding, end of period, in dollars per share	$ 7.30
Unrecognized compensation expense	$ 1.4
Weighted-average recognition period for unrecognized compensation expense	3 months 29 days

[1] Forfeitures of non vested RCG Grants are reallocated to other members within RCG Holdings, LLC.