Note 11 - Financial Information about Geographic Areas (Tables)

6 Months Ended

Jun. 30, 2023

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,
	2023		2022		2023		2022
Net sales by geographic region
United States	$	16,061,000	$	16,740,000	$	29,754,000	$	33,815,000
International		54,000		633,000		160,000		1,219,000
Consolidated net sales	$	16,115,000	$	17,373,000	$	29,914,000	$	35,034,000

	June 30,		December 31,
	2023		2022
Long-lived assets by geographic region
United States	$	4,384,000	$	4,380,000
International		1,287,000		1,362,000
Consolidated total long-lived assets	$	5,671,000	$	5,742,000