v2.4.0.6
Supplemental Consolidating Guarantor and Non-Guarantor Financial Information - Additional Information (Detail) (10.875% Senior Notes [Member])
Dec. 31, 2012
Jun. 30, 2012
Mar. 16, 2011
10.875% Senior Notes [Member]
     
Debt Instrument [Line Items]      
Interest rate on senior note 10.875% 10.875% 10.875%