Note 10 - Significant Risk Concentrations (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Rebate Credit [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Reductions to cost of revenue	$	41	$	71	$	154	$	153
Reductions to marketing expense	$	721	$	16	$	940	$	430