11. Segments, Products and Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Total sales	$ 103,350	$ 118,893
Total sales percentage	100.00%	100.00%
Drinkable Kefir Other Than ProBugs [Member]
Total sales	$ 78,523	$ 90,514
Total sales percentage	76.00%	76.00%
Lifeway Cheese Products [Member]
Total sales	$ 11,486	$ 11,516
Total sales percentage	11.00%	10.00%
Cream and other [Member]
Total sales	$ 5,276	$ 6,527
Total sales percentage	5.00%	5.00%
Cupped Kefir And Skyr [Member]
Total sales	$ 3,836	$ 4,138
Total sales percentage	4.00%	4.00%
ProBugs Kefir [Member]
Total sales	$ 2,795	$ 4,537
Total sales percentage	3.00%	4.00%
Frozen Kefir [Member]
Total sales	$ 1,434	$ 1,661
Total sales percentage	1.00%	1.00%