Note 8 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

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

	December  31
	201 7			201 6
Net operating loss carryforwards	$	21,175		$	32,644
Net operating loss carryforwards of foreign subsidiaries		374			374
Book over tax depreciation		(14	)		(48	)
Stock-based compensation expense		25			38
Other		94			124
Deferred tax assets		21,654			33,132
Valuation allowance for deferred tax assets		(21,654	)		(33,132	)
Deferred tax assets, net of allowance	$	—		$	—

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

	201 7			201 6
Reconciliation of income tax benefit to statutory rate:
Income benefit at sta tutory rate	$	(10	)	$	(528	)
State income taxes (benefit), net of federal income tax benefit		1			(40	)
RTP (ISO expense)		—			38
Permanent differences		11			28
Change in valuation allowance		(11,478	)		890
Remeasurment of Deferreds		11,476			—
Change in state tax rate		—			(345	)
Other		—			(43	)
	$	—		$	—