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Stockholders' Equity (Details Textual) (USD $)
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3 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended | 6 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended | 0 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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Jun. 30, 2014
Common Stock [Member]
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Jun. 30, 2013
Common Stock [Member]
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Jun. 30, 2014
Liberty Media [Member]
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Jun. 30, 2014
Liberty Media [Member]
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Jan. 18, 2013
Liberty Media [Member]
Series B Preferred Stock [Member]
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Jan. 18, 2013
Liberty Media [Member]
Common Stock [Member]
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Jun. 30, 2013
Liberty Media [Member]
Common Stock [Member]
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Jun. 30, 2014
December 2012 Share Repurchase Program [Member]
Common Stock [Member]
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Dec. 31, 2013
October 2013 Share Repurchase Program [Member]
Liberty Media [Member]
Common Stock [Member]
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Apr. 25, 2014
October 2013 Share Repurchase Program [Member]
Liberty Media [Member]
Common Stock [Member]
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Oct. 09, 2013
October 2013 Share Repurchase Program [Member]
Liberty Media [Member]
Common Stock [Member]
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May 31, 2014
Accelerated Share Repurchase Program [Member]
Common Stock [Member]
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Jun. 30, 2014
Accelerated Share Repurchase Program [Member]
Common Stock [Member]
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Apr. 25, 2014
Amended October 2013 Share Repurchase Program [Member]
Liberty Media [Member]
Common Stock [Member]
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Jun. 30, 2014
Other Current Assets [Member]
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Dec. 31, 2013
Other Current Assets [Member]
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Jun. 30, 2014
Related Party Current Assets [Member]
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Dec. 31, 2013
Related Party Current Assets [Member]
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Jul. 15, 2014
Subsequent Event [Member]
Common Stock [Member]
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| Additional Stockholder's Equity (Textual) [Abstract] | ||||||||||||||||||||||||
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | |||||||||||||||||||||
| Common stock, shares authorized | 9,000,000,000 | 9,000,000,000 | 9,000,000,000 | |||||||||||||||||||||
| Common stock, shares issued (in shares) | 5,712,347,567 | 5,712,347,567 | 6,096,220,526 | |||||||||||||||||||||
| Common stock, shares outstanding | 5,706,347,567 | 5,706,347,567 | 6,096,220,526 | |||||||||||||||||||||
| Common stock reserved for issuance | 548,852,000 | 548,852,000 | ||||||||||||||||||||||
| Stock repurchase program, authorized amount | $ 4,000,000,000 | $ 500,000,000 | $ 600,000,000 | $ 2,000,000,000 | ||||||||||||||||||||
| Stock repurchased and retired during period, value | 612,903,000 | 160,000,000 | 340,000,000 | |||||||||||||||||||||
| Stock Repurchased and Retired During Period, Shares | 188,419,584 | 112,500,000 | 92,888,561 | |||||||||||||||||||||
| Share price (in dollars per share) | $ 3.66 | |||||||||||||||||||||||
| Loss on change in value of derivatives | (7,463,000) | 0 | (34,485,000) | 0 | (7,463,000) | (34,485,000) | ||||||||||||||||||
| Common stock retired | 0 | 354,375,000 | ||||||||||||||||||||||
| Remaining amount authorized under the stock repurchase program | 684,737,000 | 684,737,000 | 245,625,000 | |||||||||||||||||||||
| Treasury stock | (20,739,000) | (20,739,000) | 0 | |||||||||||||||||||||
| Stock Repurchase Program, Number of Shares Repurchased | 914,066,011 | 914,066,011 | ||||||||||||||||||||||
| Aggregate cost for shares repurchased | 3,315,263,000 | 3,315,263,000 | ||||||||||||||||||||||
| Amortization of costs related to share-lending arrangement and other issuance costs | 3,433,000 | 3,097,000 | 6,779,000 | 6,306,000 | ||||||||||||||||||||
| Unamortized, debt issuance costs | 5,922,000 | 5,922,000 | 12,701,000 | 5,792,000 | 12,423,000 | 130,000 | 278,000 | |||||||||||||||||
| Preferred stock, par value (in dollars per share) | $ 0.001 | $ 0.001 | ||||||||||||||||||||||
| Undesignated preferred stock, shares authorized | 50,000,000 | 50,000,000 | 50,000,000 | |||||||||||||||||||||
| Preferred stock, shares issued | 0 | 0 | 0 | |||||||||||||||||||||
| Preferred stock, shares outstanding | 0 | 0 | 0 | |||||||||||||||||||||
| Conversion of preferred stock to common stock (in shares) | 6,250,100 | 1,293,509,076 | 1,293,509,076 | |||||||||||||||||||||
| Class of Warrant or Right, Warrants Exercised During Period | 1,788,000 | |||||||||||||||||||||||
| Stock Issued During Period Warrant Exercised Shares | 99,349 | |||||||||||||||||||||||
| Warrants outstanding | 16,667,000 | 16,667,000 | 18,455,000 | |||||||||||||||||||||
| Weighted average exercise price on outstanding warrants | $ 2.50 | $ 2.50 | $ 2.55 | |||||||||||||||||||||
| Warrant Expenses | $ 0 | $ 0 | $ 0 | $ 0 | ||||||||||||||||||||