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

12 Months Ended

Dec. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

Classification	Useful life in years
Machinery and equipment		3	-	5
Furniture and fixtures		5	-	7
Building			39

(in thousands)	2018			2017
Machinery and equipment	$	3,321		$	2,519
Furniture and fixtures		194			153
Building		313			308
Subtotal		3,828			2,980
Accumulated depreciation		(2,315	)		(1,718	)
Property and equipment, net	$	1,513		$	1,262

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

Year ended December 31,	2018			2017
Risk free interest rate		1.91	%		0.98	%
Expected life of option in years		10			10
Expected dividend yield rate		0	%		0	%
Expected volatility		52	%		52	%

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

(in thousands)	Dec. 31, 2017
R evenue
Services	$	636
Products		(759	)
Total net revenue		(123	)
Cost of Revenue
Services		209
Products		(233	)
Total cost of revenue		(24	)
Net Income (loss)	$	(99	)