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12. Segments, Products and Customers (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Total sales $ 32,117 $ 32,570
Drinkable Kefir [Member]    
Total sales [1] 27,760 28,067
Lifeway Cheese Products [Member]    
Total sales 2,598 2,637
ProBugs Kefer products [Member]    
Total sales 1,452 1,641
Frozen Kefir [Member]    
Total sales $ 307 $ 225
[1] Excludes ProBugs Kefir products, and includes cream, cupped Kefir and cupped cheese products, supplements and other.