Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Summary of Related Party Balances (Details)

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Related Party Transactions - Summary of Related Party Balances (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Related Party Transaction [Line Items]    
Related party current assets $ 12,375 $ 6,170
Related party long-term assets 1,017,350 8,918
Related party current liabilities 3,018 2,840
Related party long-term liabilities 6,778 7,955
Equity Method Investee | Sirius XM Canada    
Related Party Transaction [Line Items]    
Related party current assets 12,375 6,170
Related party long-term assets 465,105 8,918
Related party current liabilities 3,018 2,840
Related party long-term liabilities $ 6,778 $ 7,955