Note 11 - Segment and Enterprise-wide Disclosures (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Year ended December 31,
	2018		2017		2016
	(in thousands)
United States	$	59,078	$	58,470	$	50,439
Germany		12,445		11,576		10,350
Other countries		34,045		30,821		28,362
Net sales	$	105,568	$	100,867	$	89,151

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

	As of December 31,
	2018		2017
	(in thousands)
United States	$	11,006	$	10,275
Australia		1,460		1,639
France		1,071		-
Germany		430		369
Other countries		135		95
Total property and equipment	$	14,102	$	12,378