Note 5 - Balance Sheet Details (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	June 30, 2017		December 31, 2016
	(unaudited)
Raw materials	$	19	$	45
Finished goods		1,091		1,315
Net inventory balance	$	1,110	$	1,360

Property, Plant and Equipment [Table Text Block]

	June 30, 2017			December 31, 2016
	(unaudited)
Leasehold improvements	$	114		$	114
Furniture and fixtures		317			314
Machinery and equipment		1,012			1,039
		1,443			1,467
Less accumulated depreciation and amortization		(1,243	)		(1,181	)
Property and equipment, net	$	200		$	286

Schedule of Other Accrued Liabilities [Table Text Block]

	June 30, 2017		December 31 , 201 6
	(unaudited)
Accrued warranty	$	244	$	236
Accrued outside commissions		31		28
Accrued contingent legal fees		21		25
Deferred rent		31		37
Other accrued liabilities		3		33
Total other accrued liabilities	$	330	$	359