Annual report pursuant to Section 13 and 15(d)

Segment Information (Schedule of Segment Reporting Information, By Segment) (Details)

v3.6.0.2
Segment Information (Schedule of Segment Reporting Information, By Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Net sales:                        
Net sales $ 15,000 $ 1,073,389 $ 823,023 $ 854,308 $ 816,765 $ 1,098,178 $ 864,868 $ 885,642 $ 841,887 $ 3,567,485 $ 3,690,575 $ 3,587,995
Identifiable assets:                        
Identifiable assets: 1,304,533 1,304,533       1,334,571       1,304,533 1,334,571 1,397,086
Capital expenditures:                        
Capital expenditures:                   41,742 60,692 47,316
HSN [Member]                        
Net sales:                        
Net sales                   2,474,554 2,542,107 2,476,088
Identifiable assets:                        
Identifiable assets: 1,020,531 1,020,531       1,029,475       1,020,531 1,029,475 1,107,932
Capital expenditures:                        
Capital expenditures:                   25,089 44,844 32,307
Cornerstone [Member]                        
Net sales:                        
Net sales                   1,092,931 1,148,468 1,111,907
Identifiable assets:                        
Identifiable assets: $ 284,002 $ 284,002       $ 305,096       284,002 305,096 289,154
Capital expenditures:                        
Capital expenditures:                   $ 16,653 $ 15,848 $ 15,009