Note 14 - Product Line and Geographic Information (Tables)

12 Months Ended

Mar. 31, 2020

Notes Tables

Revenue from External Customers by Products and Services [Table Text Block]

	2020		2019		2018
Packaged sales
Astaxanthin packaged	$	17,811	$	18,792	$	20,560
Spirulina packaged		7,986		7,867		8,815
Total packaged sales		25,797		26,659		29,375
Bulk sales
Astaxanthin bulk		1,151		966		1,090
Spirulina bulk		4,404		2,340		3,650
Total bulk sales		5,555		3,306		4,740
Contract extraction revenue		547		237		—
Total net sales	$	31,899	$	30,202	$	34,115

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	20 20				201 9				201 8
	(dollars in thousands)
Net sales (1) :
United States	$	24,855	78	%	$	24,192	80	%	$	26,348	77	%
Asia / Pacific		1,848	6	%		2,597	9	%		3,238	9	%
Europe		3,659	11	%		2,316	8	%		2,540	8	%
Other		1,537	5	%		1,097	3	%		1,989	6	%
	$	31,899	100	%	$	30,202	100	%	$	34,115	100	%