Note 7 - Geographic Segment Data (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

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

	Net Sales to Outside Customers				Net Sales to Outside Customers
	For the Three Months Ended				For the Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
United States	$	12,075,000	$	9,480,000	$	21,813,000	$	21,125,000
Europe		1,275,000		917,000		2,637,000		1,864,000
Mexico		2,378,000		1,956,000		4,564,000		3,979,000
United Kingdom		257,000		459,000		950,000		1,203,000
	$	15,985,000	$	12,812,000	$	29,964,000	$	28,171,000

	Total Assets at
	June 30,		December 31,
	2018		2017
United States	$	27,286,000	$	27,784,000
Europe		2,901,000		2,989,000
Mexico		9,473,000		8,288,000
United Kingdom		1,083,000		923,000
	$	40,743,000	$	39,984,000