Note 8 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	December 31
	201 6			201 5
Net operating loss carryforwards	$	32,644		$	31,777
Net operating loss carryforwards of foreign subsidiaries		374			374
Book over tax depreciation		(48	)		(62	)
Stock-based compensation expense		38			25
Other		124			128
Deferred tax assets		33,132			32,242
Valuation allowance for deferred tax assets		(33,132	)		(32,242	)
Deferred tax assets, net of allowance	$	—		$	—

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

	2016			2015
Reconciliation of income tax benefit to statutory rate:
Income benefit at statutory rate	$	(528	)	$	(425	)
State income taxes (benefit), net of federal income tax benefit		(40	)		(28	)
RTP (ISO expense)		38			116
Permanent differences		28			65
Change in valuation allowance		890			(316	)
Change in state tax rate		(345	)		577
Other		(43	)		11
	$	—		$	—