Note 6 - Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Prepaid Expenses and Other Current Assets [Table Text Block]

	December 31,
	2019		2018
Prepaid service invoices	$	42	$	79
Prepaid manufacturing and mold costs		-		91
Prepaid insurance premiums		198		193
Interest and other receivables		82		-
Total	$	322	$	363