Note 8 - Geographic Segment Data (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Net Sales to Outside Customers
	For the Three Months Ended				Total Assets at
	March 31,				March 31,		December 31,
	2019		2018		2019		2018
United States	$	8,760,000	$	9,738,000	$	25,151,000	$	25,354,000
Europe		1,275,000		1,362,000		3,366,000		3,052,000
Mexico		2,081,000		2,186,000		11,406,000		9,476,000
United Kingdom		420,000		693,000		1,461,000		879,000
	$	12,536,000	$	13,979,000	$	41,384,000	$	38,761,000