Note 10 - Financial Information about Geographic Areas (Tables)

6 Months Ended

Jun. 30, 2022

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,
	2022		2021		2022		2021
Net sales by geographic region
United States	$	16,740,000	$	17,694,000	$	33,815,000	$	38,592,000
International		633,000		112,000		1,219,000		2,375,000
Consolidated net sales	$	17,373,000	$	17,806,000	$	35,034,000	$	40,967,000

	June 30,		December 31,
	2022		2021
Long-lived assets by geographic region
United States	$	4,466,000	$	4,623,000
International		1,382,000		1,441,000
Consolidated total long-lived assets	$	5,848,000	$	6,064,000