Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v2.4.0.8
Subsequent Events (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jul. 24, 2013
Subsequent Event [Member]
Jun. 30, 2013
7.625% Senior Notes due 2018 [Member]
Oct. 31, 2010
7.625% Senior Notes due 2018 [Member]
Jul. 24, 2013
7.625% Senior Notes due 2018 [Member]
Subsequent Event [Member]
Oct. 31, 2010
7.625% Senior Notes due 2018 [Member]
Subsequent Event [Member]
Jun. 30, 2013
8.75% Senior Notes due 2015 [Member]
Mar. 31, 2010
8.75% Senior Notes due 2015 [Member]
Jul. 24, 2013
8.75% Senior Notes due 2015 [Member]
Subsequent Event [Member]
Mar. 31, 2010
8.75% Senior Notes due 2015 [Member]
Subsequent Event [Member]
Jun. 30, 2013
Common Stock [Member]
Jul. 24, 2013
Common Stock [Member]
Subsequent Event [Member]
Subsequent Event [Line Items]                          
Extinguishment of debt, amount     $ 74,534 $ 100,650   $ 57,034   $ 29,013   $ 17,500      
Interest rate on instrument         7.625%   7.625%   8.75%   8.75%    
Repurchase price of long-term debt 283,180 169,899   112,569   63,677   32,977   19,885      
Common stock repurchased (in shares)                       352,568,635 38,373,000
Common stock repurchased $ 1,143,789                     $ 1,143,789 $ 136,299