Note 7 - Income Taxes (Tables)

12 Months Ended

Jun. 30, 2013

Income Tax Disclosure [Abstract]

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

	Year Ended June 30,
	2013		2012		2011
	(In thousands)
Current:
Federal	$	—	$	—	$	(2	)
State		—		16		(3	)
		—		16		(5	)
Deferred:
Federal		—		—		—
State		—		—		—
		—		—		—
	$	—	$	16	$	(5	)

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

	Year Ended June 30,
	2013			2012			2011
Statutory federal income tax benefit		(34.0	)%		(34.0	)%		(34.0	)%
State income taxes, net of federal income tax benefit		(3.7	)		(3.6	)		(3.8	)
Engineering credits		(1.1	)		(1.8	)		(13.8	)
Valuation allowance		39.2			39.3			59.4
Other		(0.4	)		0.5			(8.6	)
		0.0	%		0.4	%		(0.8	)%

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

	June 30,
	2013			2012			2011
	(In thousands)
Deferred tax assets:
Net operating loss carry forwards	$	8,888		$	5,059		$	4,119
Capital loss and other credit carry forwards		57			178			21
Engineering credit carry forwards		1,412			1,244			1,148
Allowance for bad debts and returns		105			19			78
Inventory reserves		408			650			168
Capitalized inventory costs		—			17			16
Marketable securities		—			—			—
Other accruals		849			500			514
Total gross deferred tax assets		11,719			7,667			6,064
Less valuation allowance on deferred tax assets		(11,717	)		(7,654	)		(6,034	)
Net deferred tax assets		2			13			30
Deferred tax liabilities:
Marketable securities		(1	)		(3	)		(15	)
Depreciation and other		(1	)		(10	)		(15	)
Total deferred tax liabilities		(2	)		(13	)		(30	)
Net deferred taxes	$	—		$	—		$	—

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

	June 30,
	2013			2012			2011
Balance at July 1	$	26		$	21		$	25
Increases related to tax positions taken in prior year		3			4			9
Decreases due to lapse of statute of limitations		(11	)		(1	)		(10	)
Related interest and penalties, net of federal tax benefit		(1	)		2			(3	)
Balance at June 30	$	17		$	26		$	21