Note 7 - Income Taxes (Restated) (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Year ended December 31,
(in thousands)	2014		2013
Current	$	26	$	43
Provision for uncertain tax positions		27		26
Total	$	53	$	69

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

Year ended December 31,	2014			2013
Statutory rate		35	%		35	%
Change in valuation allowance		(34	%)		(35	%)
Other – state		4	%		13	%
Effective rate		5	%		13	%

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

(in thousands)	2014			2013
Deferred tax assets:
Federal, state and foreign loss carryforwards	$	3,862		$	6,527
Capital loss carryforward		3,570			--
Capitalized research and development		--			475
Deferred revenue		71			77
Federal and state tax credits		520			1,762
Other		503			563
Total deferred tax asset		8,526			9,404
Less valuation allowance		(8,526	)		(9,404	)
Net deferred tax asset	$	--		$	--

Summary of Operating Loss Carryforwards [Table Text Block]

(in thousands)	2014		2013
2019	$	--	$	2,901
2021		689		1,184
2022		849		1,083
2023		--		1,302
Thereafter		9,498		12,177
Total	$	11,036	$	18,647