Note 4 - Segment Information (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

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

	Three Months Ended March 31,
	2023		2022
Domestic	$	2,767	$	2,363
International (1)		5,076		5,048
Total	$	7,843	$	7,411

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	Three Months Ended March 31,
	2023			2022
Customer A		50	%		47	%
Customer B		23	%		10	%

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

	March 31,		December 31,
	2023		2022
United States	$	1,966	$	2,324
Europe		58		66
Total	$	2,024	$	2,390