|
Fair Value of Financial Instruments - Fair Values and Related Carrying Values of Debt Instruments (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2012
|
Dec. 31, 2011
|
|---|---|---|
|
Carrying Amount
|
||
| Long-term Debt | ||
| Long term debt Fair value | $ 425,000 | $ 425,000 |
|
Carrying Amount | 9.125% Senior Notes, due April 2018 (Issued March 22, 2010)
|
||
| Long-term Debt | ||
| Long term debt Fair value | 300,000 | 300,000 |
|
Carrying Amount | 9.125% Senior Notes, due April 2018 (Issued April 25, 2012)
|
||
| Long-term Debt | ||
| Long term debt Fair value | 125,000 | |
|
Carrying Amount | 2.125% Convertible Senior Notes, due July 2012
|
||
| Long-term Debt | ||
| Long term debt Fair value | 125,000 | |
|
Fair Value
|
||
| Long-term Debt | ||
| Long term debt Fair value | 457,938 | 438,204 |
|
Fair Value | 9.125% Senior Notes, due April 2018 (Issued March 22, 2010)
|
||
| Long-term Debt | ||
| Long term debt Fair value | 323,250 | 315,000 |
|
Fair Value | 9.125% Senior Notes, due April 2018 (Issued April 25, 2012)
|
||
| Long-term Debt | ||
| Long term debt Fair value | 134,688 | |
|
Fair Value | 2.125% Convertible Senior Notes, due July 2012
|
||
| Long-term Debt | ||
| Long term debt Fair value | $ 123,204 |