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Related Party Transactions (Details 1) (USD $)
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Sep. 30, 2013
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Dec. 31, 2012
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Sep. 30, 2013
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Dec. 31, 2012
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Sep. 30, 2012
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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Sep. 30, 2013
8.75% Senior Notes due 2015 [Member]
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Dec. 31, 2012
8.75% Senior Notes due 2015 [Member]
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Mar. 31, 2010
8.75% Senior Notes due 2015 [Member]
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Sep. 30, 2013
7.625% Senior Notes due 2018 [Member]
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Dec. 31, 2012
7.625% Senior Notes due 2018 [Member]
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Oct. 31, 2010
7.625% Senior Notes due 2018 [Member]
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Sep. 30, 2013
Liberty Media [Member]
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Dec. 31, 2012
Liberty Media [Member]
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Sep. 30, 2013
Liberty Media [Member]
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Dec. 31, 2012
Liberty Media [Member]
7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Sep. 30, 2013
Liberty Media [Member]
8.75% Senior Notes due 2015 [Member]
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Dec. 31, 2012
Liberty Media [Member]
8.75% Senior Notes due 2015 [Member]
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Sep. 30, 2013
Liberty Media [Member]
7.625% Senior Notes due 2018 [Member]
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Dec. 31, 2012
Liberty Media [Member]
7.625% Senior Notes due 2018 [Member]
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Summary of Related party long term debt | ||||||||||||||||||||
| Interest rate on instrument | 7.00% | 7.00% | 7.00% | 8.75% | 7.625% | 7.00% | 7.00% | 8.75% | 8.75% | 7.625% | 7.625% | |||||||||
| Total principal debt | $ 550,000,000 | $ 800,000,000 | $ 700,000,000 | $ 61,000,000 | $ 211,000,000 | $ 11,000,000 | $ 11,000,000 | $ 0 | $ 150,000,000 | $ 50,000,000 | $ 50,000,000 | |||||||||
| Less: discounts | 2,374,000 | 4,112,000 | 0 | 7,056,000 | 14,000,000 | 6,661,000 | 9,647,000 | 669,000 | 2,094,000 | |||||||||||
| Total carrying value of debt | $ 60,331,000 | $ 208,906,000 | $ 60,331,000 | $ 208,906,000 |