Annual report pursuant to Section 13 and 15(d)

Business & Basis of Presentation (Details Textual)

v2.4.0.6
Business & Basis of Presentation (Details Textual)
12 Months Ended
Dec. 31, 2012
Line
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Number of satellite radio systems 2
Minimum [Member]
 
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Length of prepaid subscriptions, term 3 months
Maximum [Member]
 
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Length of prepaid subscriptions, term 12 months