Annual report pursuant to Section 13 and 15(d)

Intangible Assets And Goodwill Intangible Assets And Goodwill (Balance of Goodwill by Reporting Unit) (Details)

v3.6.0.2
Intangible Assets And Goodwill Intangible Assets And Goodwill (Balance of Goodwill by Reporting Unit) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Goodwill [Line Items]      
Gross Balance   $ 2,894,058 $ 2,894,058
Accumulated Impairment   (2,884,200) (2,884,200)
Goodwill [Roll Forward]      
Beginning Balance $ 9,858 9,858  
Additions 0 0  
Impairment 0 0  
Ending Balance 9,858 9,858  
HSN [Member]      
Goodwill [Line Items]      
Gross Balance   2,391,594 2,391,594
Accumulated Impairment   (2,391,594) (2,391,594)
Goodwill [Roll Forward]      
Beginning Balance 0 0  
Additions 0 0  
Impairment 0 0  
Ending Balance 0 0  
Cornerstone [Member]      
Goodwill [Line Items]      
Gross Balance   502,464 502,464
Accumulated Impairment   (492,606) $ (492,606)
Goodwill [Roll Forward]      
Beginning Balance 9,858 9,858  
Additions 0 0  
Impairment 0 0  
Ending Balance $ 9,858 $ 9,858