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Benefits Plans (Details Textuals) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | |||||||||||||||
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Jun. 30, 2011
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Jun. 30, 2010
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Jun. 30, 2011
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Jun. 30, 2010
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Jun. 30, 2011
Employee Stock Option [Member]
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Jun. 30, 2010
Employee Stock Option [Member]
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Jun. 30, 2011
Employee Stock Option [Member]
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Jun. 30, 2010
Employee Stock Option [Member]
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Jun. 30, 2011
Sirius XM Savings Plan [Member]
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Jun. 30, 2010
Sirius XM Savings Plan [Member]
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Jun. 30, 2011
Sirius XM Savings Plan [Member]
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Jun. 30, 2010
Sirius XM Savings Plan [Member]
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Jun. 30, 2011
Stock Compensation Plan [Member]
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Jun. 30, 2011
Restricted Stock and Restricted Stock Units RSU [Member]
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Jun. 30, 2010
Restricted Stock and Restricted Stock Units RSU [Member]
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Jun. 30, 2011
Restricted Stock and Restricted Stock Units RSU [Member]
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Jun. 30, 2010
Restricted Stock and Restricted Stock Units RSU [Member]
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Jun. 30, 2011
Restricted Stock Units RSU and Stock Options [Member]
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Dec. 31, 2010
Restricted Stock Units RSU and Stock Options [Member]
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Jun. 30, 2011
Profit Sharing [Member]
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Jun. 30, 2010
Profit Sharing [Member]
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Jun. 30, 2011
Profit Sharing [Member]
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Jun. 30, 2010
Profit Sharing [Member]
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Jun. 30, 2011
Third Parties [Member]
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Jun. 30, 2010
Third Parties [Member]
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Jun. 30, 2011
Third Parties [Member]
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Jun. 30, 2010
Third Parties [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||||||||||
| Share-based compensation expense | $ 10,735 | $ 15,682 | $ 22,023 | $ 31,223 | $ 9,920 | $ 10,254 | $ 19,897 | $ 20,780 | $ 814 | $ 718 | $ 1,583 | $ 1,925 | $ 1 | $ 2,116 | $ 543 | $ 4,674 | $ 0 | $ 2,594 | $ 0 | $ 3,844 | |||||||
| Common stock available for future grants | 271,986,000 | ||||||||||||||||||||||||||
| Weighted average grant date fair value of options granted | $ 1.17 | $ 0.47 | |||||||||||||||||||||||||
| Granted, options | 719,000 | 0 | 0 | 0 | 0 | ||||||||||||||||||||||
| Total Intrinsic value of stock options exercised | 7,393 | 221 | |||||||||||||||||||||||||
| Total intrinsic value of restricted stock and restricted stock units that vested | $ 3,178,000 | $ 3,885,000 | |||||||||||||||||||||||||
| Total unrecognized compensation costs related to unvested share based payment awards for restricted stock units, net of estimated forfeitures | $ 84,971 | $ 108,170 | |||||||||||||||||||||||||
| Weighted average expected period for recognition of compensation expenses | 3 years | ||||||||||||||||||||||||||
| Percentage limit of an employee's pre-tax salary the Company will match in the form of shares of common stock | 50% of employees voluntary contributions, up to 6% | 50% of employees voluntary contributions, up to 6% | |||||||||||||||||||||||||
| Limit of employee contributions of pre-tax eligible earnings to Company 401(k) Savings Plan | 50.00% | 50.00% | |||||||||||||||||||||||||
| Minimum of employee contributions of pre-tax eligible earnings to Company 401(k) Savings Plan | 1.00% | 1.00% | |||||||||||||||||||||||||
| Vesting percentage of Employer contributions for each year of employment | 33.33% | 33.33% | |||||||||||||||||||||||||
| Percentage of weighting of observable historical volatility in 2010 | 100.00% | 100.00% | |||||||||||||||||||||||||