Stockholders' Equity (Details) (USD $)	12 Months Ended					1 Months Ended	12 Months Ended				12 Months Ended					12 Months Ended	1 Months Ended
	Dec. 31, 2013 class	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Common Stock	Dec. 31, 2013 Treasury Stock	Dec. 31, 2009 Common Stock Class A	Dec. 31, 2013 Common Stock Class A	Dec. 31, 2012 Common Stock Class A	Dec. 31, 2013 Common Stock Class B	Dec. 31, 2012 Common Stock Class B	Dec. 31, 2009 RCG Holdings, LLC [Member] Common Stock Class A	Dec. 31, 2013 HVB [Member] Common Stock Class A	Dec. 31, 2012 RCG Holdings, LLC [Member] Common Stock Class A	Dec. 31, 2010 RCG Holdings, LLC [Member] Common Stock Class A	Jun. 28, 2011 LaBranche and Co Inc. [Member]	Dec. 31, 2011 LaBranche and Co Inc. [Member] Common Stock	Dec. 31, 2009 RCG Holdings, LLC [Member]
Equity, Class of Stock [Line Items]
Common stock, shares authorized	500,000,000						250,000,000	250,000,000	250,000,000	250,000,000
Common stock, par value (in dollars per share)							$ 0.01	$ 0.01	$ 0.01	$ 0.01
Treasury Stock, Shares [Roll Forward]
Treasury stock, shares, beginning of period					11,292,220		11,292,220
Shares purchased for minimum tax withholding under the Equity Plan or other similar transactions					1,203,454
Treasury stock reissued, shares					(24,744)
Purchase of treasury stock, shares					3,402,619
Treasury stock, shares, end of period					15,873,549		15,873,549	11,292,220
Treasury Stock, Cost [Roll Forward]
Treasury stock, cost, beginning of period	$ 31,728,000						$ 31,728,000
Shares purchased for minimum tax withholding, cost	3,649,000	3,988,000	3,631,000		3,649,000
Treasury stock reissued, cost	(90,000)		0		(90,000)
Purchase of treasury stock, cost					12,797,000
Treasury stock, cost, end of period	48,100,000	31,728,000			48,084,000		48,084,000	31,728,000
Treasury Stock, Average Cost Per Share [Roll Forward]
Treasury stock, average cost per share, beginning of period, in dollars per share					$ 2.81
Shares purchased for minimum tax withholding, average cost per share, in dollars per share					$ 3.03
Treasury stock reissued, average cost per share, in dollars per share					$ 3.64
Purchase of treasury stock, average cost per share, in dollars per share					$ 3.76
Treasury stock, average cost per share, end of period, in dollars per share					$ 3.03
Shares issued at the consummation of transaction												2,713,882
Number of classes	2
Shares converted at the time of the transaction							15,042,290
Stock Issued During Period, Shares, New Issues						17,292,698											284,655
Stock Issued During Period, Value, New Issues						$ 82,000,000
Common stock, shares outstanding							115,026,633	112,447,892	0	0			16,135,162	33,576,099
Stockholders' Equity, Shares Transferred to Member's Ownership							16,045,865	9,054,175
Business Acquisition, Equity Interest Issued or Issuable, Exchange Ratio															0.9980
Stock Issued During Period, Shares, Acquisitions				2,491,647							37,536,826					40,850,133
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01