Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 09, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]        
Contributions from Qurate Retail $ 1,300,000 $ (1,122,272) $ (146,680) $ (272,195)
Increase in valuation allowance   893 384  
Change in valuation allowance affecting tax expense   189 $ 384 $ 0
Operating Loss Carryforwards [Line Items]        
Carryforwards   154,000    
Carryforwards with no expiration   39,000    
Carryforwards subject to expiration   115,000    
Carryforwards, valuation allowance   1,000    
Tax Year 2021        
Operating Loss Carryforwards [Line Items]        
Carryforwards that may expire if unused   $ 1,000