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11. Segments, Products and Customers (Tables)
12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Schedule of sales of products by category
   2017   2016 
In thousands  $   %   $   % 
                 
Drinkable Kefir other than ProBugs  $90,514    76%   $96,782    78% 
Cheese   11,516    10%    11,007    9% 
Cream and other (a)   6,527    5%    6,114    5% 
ProBugs Kefir   4,537    4%    6,722    5% 
Other dairy   4,138    4%    1,279    1% 
Frozen Kefir (b)   1,661    1%    1,975    2% 
Net Sales  $118,893    100%   $123,879    100%