Note 6 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	December 31 , 2016		December 31, 2015
Current:
Federal	$	—	$	—
State		—		20
		—		20
Deferred:
Federal		—		—
State		—		—
	$	—	$	—
			$	20

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

	Twelve Months Ended December 31,						Six Months Ended December 31,			Twelve Months Ended June 30,
	201 6			201 5			2015			2015
	Audited			(Unaudited)			Audited			Audited
Statutory federal income tax benefit		(34.0	)%		(34.0	)%		(34.0	)%		(34.0	)%
State income taxes, net of federal income tax benefit		8.7			(10.9	)		(10.9	)		(4.3	)
Foreign income taxes, net of federal income tax benefit		(1.3	)		0.7			0.7			1.8
Engineering credits		(5.2	)		(2.5	)		(2.5	)		(8.2	)
Valuation allowance		26.2			48.3			48.3			43.3
Other		5.6			(0.5	)		(0.5	)		1.4
Effective federal income tax rate		0.0	%		1.1	%		1.1	%		0.0	%

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

	December 31 , 2016			December 31, 2015
Deferred tax assets:
Net operating loss carry forwards	$	12,295		$	11,461
Engineering credit carry forwards		1,830			1,771
Inventory reserves		1,015			1,412
Capital loss and other credit carry forwards		21			67
Allowance for bad debts and returns		45			44
Capitalized inventory costs, stock compensation and other accruals		596			784
Total gross deferred tax assets		15,802			15,539
Less valuation allowance on deferred tax assets		(15,765	)		(15,448	)
Net deferred tax assets		37			91
Deferred tax liabilities:
Depreciation and other		(37	)		(91	)
Total deferred tax liabilities		(37	)		(91	)
Net deferred taxes	$	—		$	—

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	December 31 , 2016		December 31, 2015
Beginning Balance	$	27	$	17
Increases related to tax positions taken in prior year		2		10
Decreases due to lapse of statute of limitations		—		—
Related interest and penalties, net of federal tax benefit		—		—
Balance at December 31	$	29	$	27