12. Segments, Products and Customers (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Total sales		$ 22,729	$ 24,480	$ 70,497	$ 80,318
Percentage of sales		100.00%	100.00%	100.00%	100.00%
Drinkable Kefir other than ProBugs[Member]
Total sales		$ 17,513	$ 18,877	$ 54,126	$ 61,255
Percentage of sales		77.00%	77.00%	77.00%	76.00%
Cheese [Member]
Total sales		$ 2,791	$ 2,656	$ 8,348	$ 8,443
Percentage of sales		12.00%	11.00%	12.00%	11.00%
Cream and other [Member]
Total sales		$ 913	$ 1,406	$ 3,359	$ 4,104
Percentage of sales		4.00%	6.00%	5.00%	5.00%
ProBugs Kefir [Member]
Total sales		$ 590	$ 471	$ 2,050	$ 2,166
Percentage of sales		3.00%	2.00%	3.00%	3.00%
Other Dairy [Member]
Total sales		$ 432	$ 699	$ 1,334	$ 3,154
Percentage of sales		2.00%	3.00%	2.00%	4.00%
Frozen Kefir [Member]
Total sales	[1]	$ 490	$ 371	$ 1,280	$ 1,196
Percentage of sales	[1]	2.00%	1.00%	1.00%	1.00%

[1] Includes Lifeway Kefir Shop sales