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Debt (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 1 Months Ended | 4 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended | 1 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | |||||||||||||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Mar. 31, 2010
8.75% Senior Notes due 2015 [Member]
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Jun. 30, 2013
8.75% Senior Notes due 2015 [Member]
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Jun. 30, 2013
8.75% Senior Notes due 2015 [Member]
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Dec. 31, 2012
8.75% Senior Notes due 2015 [Member]
|
Jan. 31, 2013
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Aug. 31, 2008
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Jun. 30, 2013
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
|
Jun. 30, 2013
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
|
Dec. 31, 2012
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
|
Oct. 31, 2010
7.625% Senior Notes due 2018 [Member]
|
Jun. 30, 2013
7.625% Senior Notes due 2018 [Member]
|
Jun. 30, 2013
7.625% Senior Notes due 2018 [Member]
|
Dec. 31, 2012
7.625% Senior Notes due 2018 [Member]
|
Aug. 31, 2012
5.25% Senior Notes due 2022 [Member]
|
Jun. 30, 2013
5.25% Senior Notes due 2022 [Member]
|
Dec. 31, 2012
5.25% Senior Notes due 2022 [Member]
|
May 31, 2013
4.25% Senior Notes Due 2020 [Member]
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Jun. 30, 2013
4.25% Senior Notes Due 2020 [Member]
|
Dec. 31, 2012
4.25% Senior Notes Due 2020 [Member]
|
May 31, 2013
4.625% Senior Notes Due 2023 [Member]
|
Jun. 30, 2013
4.625% Senior Notes Due 2023 [Member]
|
Dec. 31, 2012
4.625% Senior Notes Due 2023 [Member]
|
Jun. 30, 2012
9.75% Senior Secured Notes due 2015 [Member]
|
Jun. 30, 2012
9.75% Senior Secured Notes due 2015 [Member]
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Aug. 31, 2009
9.75% Senior Secured Notes due 2015 [Member]
|
Jun. 30, 2012
13% Senior Notes due 2013 [Member]
|
Jun. 30, 2012
13% Senior Notes due 2013 [Member]
|
Jul. 31, 2008
13% Senior Notes due 2013 [Member]
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Dec. 31, 2012
Senior Secured Revolving Credit Facility [Member]
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Jun. 30, 2013
Senior Secured Revolving Credit Facility [Member]
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Jun. 30, 2013
Common Stock [Member]
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|
| Debt (Textual) [Abstract] | |||||||||||||||||||||||||||||||||||
| Interest rate on instrument | 8.75% | 7.00% | 7.625% | 5.25% | 4.25% | 4.625% | 9.75% | 13.00% | |||||||||||||||||||||||||||
| Extinguishment of debt, amount | $ 29,013 | $ 100,650 | $ 38,316 | $ 70,888 | $ 62,729 | $ 96,983 | |||||||||||||||||||||||||||||
| Aggregate principal amount issued | 800,000 | 550,000 | 700,000 | 400,000 | 500,000 | 500,000 | |||||||||||||||||||||||||||||
| Due date of interest on note | semi-annually in arrears on April 1 and October 1 of each year | semi-annually in arrears on June 1 and December 1 of each year | semi-annually in arrears on May 1 and November 1 of each year | semi-annually in arrears on February 15 and August 15 of each year | semi-annually in arrears on May 15 and November 15 of each year | semi-annually in arrears on May 15 and November 15 of each year | |||||||||||||||||||||||||||||
| Maturity date of notes | Apr. 01, 2015 | Dec. 01, 2014 | Nov. 01, 2018 | Aug. 15, 2022 | May 15, 2020 | May 15, 2023 | |||||||||||||||||||||||||||||
| Issued value of debt | 1,136,640 | 0 | 786,000 | 494,375 | 494,375 | ||||||||||||||||||||||||||||||
| Debt discount | 14,000 | 5,408 | 5,408 | 7,056 | 2,846 | 2,846 | 4,112 | 7,692 | 7,692 | 9,647 | 5,592 | 5,826 | 5,625 | 5,539 | 0 | 5,625 | 5,570 | 0 | |||||||||||||||||
| Number of shares for each $1000 principal amount on conversion | 543.1372 | 543.1372 | |||||||||||||||||||||||||||||||||
| Conversion price per share (in dollars per share) | $ 1.841 | $ 1.841 | |||||||||||||||||||||||||||||||||
| Principal amount of the Exchangable Notes converted | 47,630 | ||||||||||||||||||||||||||||||||||
| Amount of Exchangable Notes converted (in shares) | 27,687,850 | ||||||||||||||||||||||||||||||||||
| Recognized unamortized discount and deferred financing fees upon conversion | 2,533 | ||||||||||||||||||||||||||||||||||
| Debt instrument, term | 5 years | ||||||||||||||||||||||||||||||||||
| Credit facility, maximum borrowing capacity | 1,250,000 | ||||||||||||||||||||||||||||||||||
| Credit facility, unused capacity, commitment fee percentage | 0.30% | ||||||||||||||||||||||||||||||||||
| Credit facility, amount borrowed | 150,000 | ||||||||||||||||||||||||||||||||||
| Credit facility, amount repaid | 150,000 | ||||||||||||||||||||||||||||||||||
| Repurchase price of long-term debt | 283,180 | 169,899 | 32,977 | 112,569 | 41,875 | 77,440 | 73,616 | 113,226 | |||||||||||||||||||||||||||
| Aggregate (loss) on extinguishment of notes | $ (16,377) | $ (15,650) | $ (16,377) | $ (25,621) | $ (3,755) | $ (12,622) | $ (4,054) | $ (7,832) | $ (11,596) | $ (17,789) | |||||||||||||||||||||||||
| Maximum consolidated leverage | 5.00 | 5.0 | 5.0 | 5.0 | |||||||||||||||||||||||||||||||