Note 1 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three months ended		Six months ended
	June 30, 2018		June 30, 2018
Royalty income	$	3,530	$	6,588
License revenue		333		463
Other revenue		15		16
Total revenue	$	3,878	$	7,067

Property, Plant and Equipment [Table Text Block]

	June 30,			December 31,
	2018			2017
Machinery and equipment	$	2,993		$	2,516
Leasehold improvements		1,734			1,734
Computer equipment		712			714
Furniture and fixtures		878			874
Construction in progress		20			-
Property and equipment, gross		6,337			5,838
Less - accumulated depreciation		(2,198	)		(1,716	)
Property and equipment, net	$	4,139		$	4,122