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Significant Contracts (Details Textual) - Royalty Agreement With QVC [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Business Acquisition [Line Items]          
Royalty Revenue $ 7,830 $ 5,740 $ 15,140 $ 11,470  
Revenue from Royalty, Percentage 86.00% 91.00% 87.00% 89.00%  
Accounts Receivable, Gross $ 7,330   $ 7,330   $ 6,400
Accounts Receivables, Percentage 73.00%   73.00%   84.00%