Note 11 - Financial Information about Geographic Areas (Tables)

9 Months Ended

Sep. 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 Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Net sales by geographic region
United States	$	14,244,000	$	24,295,000	$	52,836,000	$	62,461,000
International		231,000		5,732,000		2,606,000		11,220,000
Consolidated net sales	$	14,475,000	$	30,027,000	$	55,442,000	$	73,681,000

	September 30,		December 31,
	2021		2020
Long-lived assets by geographic region
United States	$	4,668,000	$	2,787,000
International		1,468,000		1,566,000
Consolidated total long-lived assets	$	6,136,000	$	4,353,000