Equity-Based Compensation (Details 1)	6 Months Ended
	Jun. 30, 2012
Class A units
Schedule of unvested units expected to vest
Number of Units	11,669
Weighted average remaining service term (years)	4 years 2 months 12 days
OCGH Units [Member]
Schedule of unvested units expected to vest
Number of Units	4,870,837
Weighted average remaining service term (years)	5 years 9 months 18 days