Note 1 - Accounting Policies (Tables)

6 Months Ended

Jun. 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 June 30, 2018
				Without			Effect of
				Adoption of			Change
	As Reported			ASU 2014-09			Higher/(Lower)
Operating results
Net sales	$	8,459,741		$	8,460,954		$	(1,213	)
Net income (loss)		(977,954	)		(976,741	)		(1,213	)

		Six Months Ended June 30, 2018
				Without			Effect of
				Adoption of			Change
	As Reported			ASU 2014-09			Higher/(Lower)
Operating results
Net sales	$	18,462,980		$	18,452,001		$	10,979
Net income (loss)		(1,216,259	)		(1,227,238	)		10,979

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

	Three months ended June 30				Six months ended June 30
	2018		2017		2018		2017
Net sales to external customers
United States	$	6,336,387	$	7,449,858	$	14,006,448	$	17,708,797
Australia/New Zealand		177,536		227,032		409,464		486,458
Canada		161,557		217,085		403,677		481,388
Mexico		112,411		89,221		219,782		246,538
Europe (1)		1,030,546		1,307,383		2,195,430		2,508,158
Asia (2)		641,304		716,049		1,228,179		1,353,071
Total net sales	$	8,459,741	$	10,006,628	$	18,462,980	$	22,784,410

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

	Three months ended June 30				Six months ended June 30
	2018		2017		2018		2017
Net sales by product category
Nutritional and dietary supplements	$	7,606,674	$	8,917,319	$	16,676,031	$	20,336,938
Sales aids and other		313,922		341,490		635,946		756,987
Handling & freight income		539,145		747,819		1,151,003		1,690,485
Total net sales	$	8,459,741	$	10,006,628	$	18,462,980	$	22,784,410