Note 9 - Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three months ended March 31
	2019		2018
Net sales by product category
Nutritional and dietary supplements	$	8,497,350	$	9,069,356
Sales aids, membership fees, and other		313,647		322,025
Freight income		519,941		611,858
Other revenue		158,566		-
Total net sales	$	9,489,504	$	10,003,239

Revenue from External Customers by Geographic Areas [Table Text Block]

	Three months ended March 31
	2019		2018
Net sales by geographic region
United States	$	7,111,773	$	7,670,061
Australia/New Zealand		177,048		231,928
Canada		199,399		242,120
Mexico		136,026		107,371
Europe (1)		938,668		1,164,884
Asia (2)		926,590		586,875
Total net sales	$	9,489,504	$	10,003,239