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Benefit Plans (Details Textual) (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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
plans
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Jun. 30, 2013
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Jun. 30, 2014
Third Parties [Member]
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Jun. 30, 2013
Third Parties [Member]
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Jun. 30, 2014
Third Parties [Member]
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Jun. 30, 2013
Third Parties [Member]
|
Jun. 30, 2014
Restricted Stock Units RSU and Stock Options [Member]
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Dec. 31, 2013
Restricted Stock Units RSU and Stock Options [Member]
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Jun. 30, 2014
Employee Stock Option [Member]
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Jun. 30, 2013
Employee Stock Option [Member]
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Jun. 30, 2014
Employee Stock Option [Member]
|
Jun. 30, 2013
Employee Stock Option [Member]
|
Jun. 30, 2014
Restricted Stock Units (RSUs) [Member]
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Jun. 30, 2013
Restricted Stock Units (RSUs) [Member]
|
Jun. 30, 2014
Restricted Stock Units (RSUs) [Member]
|
Jun. 30, 2013
Restricted Stock Units (RSUs) [Member]
|
Jun. 30, 2014
Sirius XM Savings Plan [Member]
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Jun. 30, 2013
Sirius XM Savings Plan [Member]
|
Jun. 30, 2014
Sirius XM Savings Plan [Member]
|
Jun. 30, 2013
Sirius XM Savings Plan [Member]
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| Benefits Plans (Textual) [Abstract] | ||||||||||||||||||||||
| Share-based compensation expense | $ 17,787 | $ 15,494 | $ 36,027 | $ 30,012 | $ 16,193 | $ 15,283 | $ 32,808 | $ 29,801 | $ 1,594 | $ 211 | $ 3,219 | $ 211 | ||||||||||
| Stock-based awards expiration term | 10 years | |||||||||||||||||||||
| Restricted stock conversion to common stock | 1 | |||||||||||||||||||||
| Common stock available for future grants | 79,039,000 | 79,039,000 | ||||||||||||||||||||
| Number of other share-based benefit plans | 4 | |||||||||||||||||||||
| Granted, options (in shares) | 0 | 0 | 0 | 0 | 5,441,000 | |||||||||||||||||
| Weighted average grant date fair value of options granted (in dollars per share) | $ 1.09 | $ 1.34 | ||||||||||||||||||||
| Total intrinsic value of stock options exercised | 20,435 | 33,660 | ||||||||||||||||||||
| Exercise of stock options and vesting of restricted stock units (in shares) | 3,835,837 | |||||||||||||||||||||
| Total intrinsic value of restricted stock units that vested | 605 | |||||||||||||||||||||
| Weighted average grant date fair value of restricted stock units granted (in dollars per share) | $ 3.70 | $ 3.30 | ||||||||||||||||||||
| Granted, shares | 270,000 | |||||||||||||||||||||
| Total unrecognized compensation costs related to unvested share based payment awards for restricted stock units, net of estimated forfeitures | 131,608 | 164,292 | ||||||||||||||||||||
| Weighted average expected period for recognition of compensation expenses | 2 years 6 months | |||||||||||||||||||||
| Minimum of employee contributions of pre-tax eligible earnings to Company 401(k) Savings Plan | 1.00% | 1.00% | ||||||||||||||||||||
| Maximum of employee contributions of pre-tax eligible earnings to Company 401(k) Savings Plan | 50.00% | 50.00% | ||||||||||||||||||||
| Percent of Company match of employee's voluntary contributions | 50.00% | |||||||||||||||||||||
| Percent of employee's pre-tax salary | 6.00% | |||||||||||||||||||||
| Maximum annual contributions per employee, percent | 3.00% | |||||||||||||||||||||
| Vesting percentage of employer contributions for each year of employment | 33.33% | 33.33% | ||||||||||||||||||||
| Savings plan, fully vested period | 3 years | |||||||||||||||||||||
| Contributions by employer | $ 1,254 | $ 968 | $ 3,133 | $ 2,387 | ||||||||||||||||||