Note 2 - Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31 , 201 9		December 31, 201 8
Raw materials	$	199	$	136
Finished goods		2,341		2,761
Inventories, net	$	2,540	$	2,897

Property, Plant and Equipment [Table Text Block]

	December 31 , 201 9			December 31, 201 8
Leasehold improvements	$	163		$	114
Furniture and fixtures		268			286
Machinery and equipment		609			844
Total property and equipment		1,040			1,244
Less accumulated depreciation and amortization		(918	)		(1,132	)
Property and equipment, net	$	122		$	112

Schedule of Accrued Liabilities [Table Text Block]

	December 31 , 201 9		December 31, 201 8
Accrued salaries and payroll taxes	$	69	$	66
Accrued vacation		123		119
Accrued bonuses		-		-
Total accrued payroll and related liabilities	$	192	$	185

Schedule of Other Accrued Liabilities [Table Text Block]

	December 31 , 201 9		December 31, 201 8
Accrued warranty	$	290	$	365
Accrued commissions		55		41
Accrued contingent legal fees		-		100
Accrued deferred rent		-		22
Other accrued liabilities		23		31
Total other accrued liabilities	$	368	$	559