|
Schedule of Long-Term Debt (Parenthetical) (Detail) (8.50% Senior Notes)
|
Mar. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
|
8.50% Senior Notes
|
||
| Debt Instrument [Line Items] | ||
| Senior notes interest rate | 8.50% | 8.50% |
| X | ||||||||||
|
- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|