|
Related Party Transactions (Details Textual)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 3 Months Ended | 3 Months Ended | 1 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2013
USD ($)
|
Mar. 31, 2012
USD ($)
|
Dec. 31, 2012
USD ($)
|
Mar. 31, 2013
Series B Preferred Stock [Member]
USD ($)
|
Dec. 31, 2012
Series B Preferred Stock [Member]
USD ($)
|
Mar. 31, 2013
Liberty Media [Member]
USD ($)
directors
|
Mar. 31, 2012
Liberty Media [Member]
USD ($)
|
Mar. 31, 2009
Liberty Media [Member]
USD ($)
|
Dec. 31, 2012
Liberty Media [Member]
USD ($)
|
Jan. 31, 2013
Liberty Media [Member]
Series B Preferred Stock [Member]
|
Sep. 30, 2012
Liberty Media [Member]
Series B Preferred Stock [Member]
|
Mar. 31, 2009
Liberty Media [Member]
Series B Preferred Stock [Member]
USD ($)
|
Jan. 31, 2013
Liberty Media [Member]
Common Stock [Member]
|
Sep. 30, 2012
Liberty Media [Member]
Common Stock [Member]
|
Mar. 31, 2013
Liberty Media [Member]
Common Stock [Member]
|
Mar. 31, 2009
Liberty Media [Member]
Common Stock [Member]
|
Mar. 31, 2013
Sirius XM Canada [Member]
USD ($)
|
Mar. 31, 2012
Sirius XM Canada [Member]
USD ($)
|
Dec. 31, 2005
Sirius XM Canada [Member]
USD ($)
|
Mar. 31, 2013
Sirius XM Canada [Member]
CAD
|
Dec. 31, 2012
Sirius XM Canada [Member]
USD ($)
|
Jul. 31, 2008
Sirius XM Canada [Member]
USD ($)
|
Mar. 31, 2013
Sirius XM Canada [Member]
8% Convertible Unsecured Subordinated Debentures [Member]
|
Mar. 31, 2013
Sirius XM Canada [Member]
Related Party Class A Stock [Member]
|
Jan. 31, 2013
Quarterly Dividend [Member]
Sirius XM Canada [Member]
Related Party Class A Stock [Member]
CAD
|
Jan. 31, 2013
Quarterly Dividend [Member]
Sirius XM Canada [Member]
Related Party Class B Stock [Member]
CAD
|
|
| Related Party Transactions (Textual) [Abstract] | ||||||||||||||||||||||||||
| Maximum borrowing capacity from related party | $ 530,000 | |||||||||||||||||||||||||
| Preferred stock, shares issued | 0 | 6,250,100 | 12,500,000 | |||||||||||||||||||||||
| Preferred stock Series B, liquidation preference | $ 0.001 | $ 0.001 | $ 0.001 | |||||||||||||||||||||||
| Converted preferred stock, percent of outstanding shares of common stock | 40.00% | |||||||||||||||||||||||||
| Conversion of preferred stock to common stock (in shares) | 6,250,100 | 6,250,100 | 6,249,900 | 1,293,509,076 | 1,293,467,684 | |||||||||||||||||||||
| Amount of shares owned by related party | 1,293,509,076 | |||||||||||||||||||||||||
| Purchase of additional common stock | 50,000,000 | |||||||||||||||||||||||||
| Related party ownership percentage (greater than 50%) | 50.00% | |||||||||||||||||||||||||
| Number of members on the board of directors | 5 | |||||||||||||||||||||||||
| Number of members on the board of directors, designated by related party | 3 | |||||||||||||||||||||||||
| Related party current liabilities | 12,647 | 6,756 | 8,408 | 3,980 | 4,239 | 2,776 | ||||||||||||||||||||
| Interest expense associated with debt | 46,174 | 76,971 | 4,677 | 8,994 | ||||||||||||||||||||||
| Sirius XM Canada Class A shares owned on a converted basis (in shares) | 46,700,000 | |||||||||||||||||||||||||
| Economic interest related parties | 37.90% | |||||||||||||||||||||||||
| Voting interest | 25.00% | |||||||||||||||||||||||||
| Dividends declared (in CAD per share) | 0.0825 | 0.0275 | ||||||||||||||||||||||||
| Dividend received, amount | 9,674 | 0 | 3,752 | |||||||||||||||||||||||
| Face value of 8% convertible unsecured subordinated debentures (in CAD) | 4,000 | |||||||||||||||||||||||||
| Interest rate on instrument | 8.00% | |||||||||||||||||||||||||
| Dividends receivable | 0 | 6,176 | ||||||||||||||||||||||||
| Carrying value of deferred revenue | 162,461 | 159,501 | ||||||||||||||||||||||||
| Initial agreement period with XM Canada | 10 years | |||||||||||||||||||||||||
| Number of additional years XM Canada has to extend the agreements under unilateral option | 5 years | |||||||||||||||||||||||||
| Royalty for all subscriber fees earned by related party | 15.00% | |||||||||||||||||||||||||
| Obligation of XM Canada to pay us for the rights to broadcast and market National Hockey League games | 70,300 | |||||||||||||||||||||||||
| Term of obligation of XM Canada for the rights to broadcast and market the National Hockey League | 10 years | |||||||||||||||||||||||||
| Estimated fair value of deferred revenue from XM Canada | 34,000 | |||||||||||||||||||||||||
| The Company's share of related party net income (loss) | 1,708 | (1,645) | ||||||||||||||||||||||||
| Amortization expense related to equity method intangible assets | $ 12,591 | $ 13,926 | $ 363 | $ (173) | ||||||||||||||||||||||