Note 1 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three months ended		Nine months ended
	September 30, 2018		September 30, 2018
Royalty income	$	5,169	$	11,757
Other revenue		148		627
Total revenue	$	5,317	$	12,384

Property, Plant and Equipment [Table Text Block]

	September 30,			December 31,
	2018			2017
Machinery and equipment	$	3,002		$	2,516
Leasehold improvements		1,734			1,734
Computer equipment		719			714
Furniture and fixtures		878			874
Construction in progress		97			-
Property and equipment, gross		6,430			5,838
Less - accumulated depreciation		(2,453	)		(1,716	)
Property and equipment, net	$	3,977		$	4,122