Note 7 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31
	201 8			201 7
Net operating loss carryforwards	$	20,720		$	21,175
Net operating loss carryforwards of foreign subsidiaries		374			374
Depreciation expense		4			(14	)
Stock-based compensation expense		28			25
Other		78			94
Deferred tax assets		21,204			21,654
Valuation allowance for deferred tax assets		(21,204	)		(21,654	)
Deferred tax assets, net of allowance	$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	201 8			201 7
Reconciliation of income tax benefit to statutory rate:
Income benefit at statutory rate	$	480		$	(10	)
State income taxes (benefit), net of federal income tax benefit		57			1
RTP (ISO expense)		3			—
Permanent differences		(91	)		11
Change in valuation allowance		(450	)		(11,478	)
Remeasurment of Deferreds		—			11,476
Other		1			—
	$	—		$	—