Note 11 - Financial Information about Geographic Areas (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	For the Three Months Ended
	March 31,
	2021		2020
Net sales by geographic region
United States	$	20,898,000	$	15,619,000
International		2,263,000		2,535,000
Consolidated net sales	$	23,161,000	$	18,154,000

	March 31,		December 31,
	2021		2020
Long-lived assets by geographic region
United States	$	2,747,000	$	2,787,000
International		1,540,000		1,566,000
Consolidated total long-lived assets	$	4,287,000	$	4,353,000