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Significant Contracts (Details Textual) - Royalty Agreement With QVC [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Business Acquisition [Line Items]          
QVC Net Revenue $ 6,320 $ 6,870 $ 20,330 $ 21,820  
QVC Net Revenue, Percentage 80.00% 83.00% 82.00% 85.00%  
QVC Accounts Receivable, Gross $ 6,450   $ 6,450   $ 5,890
Accounts Receivables, Percentage 68.00%   68.00%   85.00%