Note 1 - Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

	Balance at			Adjustments			Balance at
	December 31			Due to			January 1
	2017			ASU 2014-09			2018
Liabilities and stockholders' equity
Accumulated deficit	$	(10,040,229	)	$	(367,568	)	$	(10,407,797	)
Deferred revenue		-			367,568			367,568

	Three Months Ended September 30, 2018
				Without			Effect of
				Adoption of			Change
	As Reported			ASU 2014-09			Higher/(Lower)
Operating results
Net sales	$	8,337,045		$	8,327,054		$	9,991
Net income (loss)		(542,301	)		(552,292	)		9,991

	Nine Months Ended September 30, 2018
				Without			Effect of
				Adoption of			Change
	As Reported			ASU 2014-09			Higher/(Lower)
Operating results
Net sales	$	26,800,025		$	26,779,055		$	20,970
Net income (loss)		(1,758,560	)		(1,779,530	)		20,970

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

	Three months ended				Nine months ended
	September 30				September 30
	2018		2017		2018		2017
Net sales to external customers
United States	$	6,498,778	$	7,082,540	$	20,505,226	$	24,791,337
Australia/New Zealand		155,663		224,419		565,126		710,877
Canada		153,189		199,877		556,866		681,265
Mexico		127,859		105,021		347,641		351,559
Europe (1)		807,097		890,783		3,002,528		3,398,941
Asia (2)		594,459		566,683		1,822,638		1,919,754
Total net sales	$	8,337,045	$	9,069,323	$	26,800,025	$	31,853,733

Schedule of Segment Reporting Information by Product [Table Text Block]

	Three months ended				Nine months ended
	September 30				September 30
	2018		2017		2018		2017
Net sales by product category
Nutritional and dietary supplements	$	7,514,349	$	8,032,308	$	24,190,379	$	28,369,246
Sales aids and other		303,177		353,691		939,124		1,110,678
Handling & freight income		519,519		683,324		1,670,522		2,373,809
Total net sales	$	8,337,045	$	9,069,323	$	26,800,025	$	31,853,733