Borrowings (Total Obligations Under The Senior Secured Notes Due 2016) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011		Dec. 31, 2010
Borrowings [Line Items]
Secured Notes	$ 1,262,087	[1]	$ 1,250,758	[1]
Secured Debt [Member]
Borrowings [Line Items]
Secured Notes	958,715		951,636
Senior Secured Notes Due 2016 [Member] | Secured Debt [Member]
Borrowings [Line Items]
Secured Notes	962,060		955,296
Unamortized debt discount	$ (3,345)		$ (3,660)

[1] Restated