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12. Segments, Products and Customers (Tables)
12 Months Ended
Dec. 31, 2019
Segment Reporting [Abstract]  
Schedule of sales of products by category
   2019   2018 
In thousands  $   %   $   % 
                 
Drinkable Kefir other than ProBugs  $71,822    77%   $78,523    76% 
Cheese   11,459    12%    11,486    11% 
Cream and other   4,228    4%    5,276    5% 
ProBugs Kefir   2,780    3%    2,795    3% 
Other dairy   1,756    2%    3,836    4% 
Frozen Kefir (a)   1,617    2%    1,434    1% 
Net Sales  $93,662    100%   $103,350    100%