Note 4 - Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

	As of December 31,
	2018			2017
Computer equipment and software	$	211		$	192
Furniture, fixtures, and other		365			302
Laboratory equipment		514			477
		1,090			971
Accumulated depreciation		(827	)		(712	)
Property and equipment, net	$	263		$	259