Note 11 - Financial Information about Geographic Areas (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

	For the Three Months Ended				For the Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Net sales by geographic region
United States	$	17,694,000	$	22,546,000	$	38,592,000	$	38,165,000
International		112,000		2,954,000		2,375,000		5,489,000
Consolidated net sales	$	17,806,000	$	25,500,000	$	40,967,000	$	43,654,000

	June 30,		December 31,
	2021		2020
Long-lived assets by geographic region
United States	$	3,915,000	$	2,787,000
International		1,507,000		1,566,000
Consolidated total long-lived assets	$	5,422,000	$	4,353,000