Note 1 - Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Property, Plant and Equipment [Table Text Block]

(in thousands)	Useful life in years				2020			2019
Machinery and equipment		3	-	5	$	11,793		$	4,995
Furniture and fixtures		5	-	7		210			203
Building			39			306			301
						12,309			5,499
Accumulated depreciation						(5,395	)		(3,322	)
Property and equipment, net					$	6,914		$	2,177

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Year ended December 31,	2020		2019
Risk free interest rate		N/A		2.58	%
Expected life of option in years		N/A		10
Expected dividend yield rate		N/A		0	%
Expected volatility		N/A		51	%