Note 6 - Property and Equipment, Net (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2019

Dec. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

	September 30,			December 31,
	2019			2018
Computer equipment and software	$	127			119
Laboratory and manufacturing equipment		550			481
Furniture and fixtures		55			55
Leasehold improvements		332			332
Construction in progress		69			3
Property and equipment, gross		1,133			990
Less accumulated depreciation		(923	)		(845	)
Property and equipment, net	$	210			145

	December 31,
	2018			2017
Computer equipment and software	$	119			106
Laboratory and manufacturing equipment		481			447
Furniture and fixtures		55			48
Leasehold improvements		332			326
Construction in progress		3			—
Property and equipment, gross		990			927
Less accumulated depreciation		(845	)		(758	)
Property and equipment, net	$	145			169