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EQUITY-BASED COMPENSATION - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 1 Months Ended 3 Months Ended
Mar. 31, 2013
Jan. 31, 2013
OCGH Units [Member]
Mar. 31, 2013
OCGH Units [Member]
2007 Plan [Member]
Jun. 30, 2013
Issued in Subsequent Quarter
OCGH Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date     30.00%  
Share-based Compensation Arrangement by Share-based payment Award, Fair Value Assumptions, Forfeiture Rate     1.50%  
Number of units, Granted   522,000   50,000
Unrecognized compensation expense on non-vested equity-based awards $ 114.3      
Weighted average period of recognition non-vested equity-based awards 5 years 6 months 0 days