Quarterly report pursuant to Section 13 or 15(d)

Supplement Guarantor Information - Additional Information (Detail)

v2.4.0.6
Supplement Guarantor Information - Additional Information (Detail) (8.50% Senior Notes, due June 2019)
Mar. 31, 2013
Dec. 31, 2012
8.50% Senior Notes, due June 2019
   
Debt Disclosure [Line Items]    
Senior notes interest rate 8.50% 8.50%