Note 1 - Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Summary of Valuation Allowance [Table Text Block]

Description	Balance at Beginning of Period		Charged to Costs and Expenses			Charged to Other Accounts		Deductions (1)			Balance at End of Period
Twelve months ended December 31, 2016	$	99		(38	)		—		—		$	61
Twelve months ended December 31, 2015 (unaudited)	$	73		71			—		(45	)	$	99
Six months ended December 31, 2015	$	15		84			—		—		$	99
Twelve months ended June 30, 2015	$	92		—			—		(77	)	$	15

Estimated Lives of Property, Plant and Equipment [Table Text Block]

Machinery and equipment (in years)	5	-	7
Furniture and fixtures (in years)	5	-	7
Leasehold Improvements (in years)	3	-	5
Computer equipment (in years)	3	-	5

Schedule of Product Warranty Liability [Table Text Block]

	December 31,
	2016			2015
	Audited			Unaudited
Beginning balance	$	187		$	168
Cost of warranty claims		(157	)		(141	)
Accruals for product warranties		206			160
Ending balance	$	236		$	187

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	December 31, 2016
	Adjusted Cost		Unrealized Gains		Unrealized Losses		Fair Value		Cash & Cash Equivalents
Level 1:
Cash	$	3,691	$	-	$	-	$	3,691	$	3,691
Restricted Cash		100		-		-		100		100
Money Market Funds		-		-		-		-		-
Total	$	3,791	$	-	$	-	$	3,791	$	3,791

	December 31, 2015
	Adjusted Cost		Unrealized Gains		Unrealized Losses		Fair Value		Cash & Cash Equivalents
Level 1:
Cash	$	828	$	-	$	-	$	828	$	828
Restricted Cash		100		-		-		100		100
Money Market Funds		3,035		-		-		3,035		3,035
Total	$	3,963	$	-	$	-	$	3,963	$	3,963