Note 7 - Income Taxes (Tables)

12 Months Ended

Jun. 30, 2012

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

	Year Ended June 30,
	2012		2011			2010
	(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,
	2012			2011			2010
Statutory federal income tax benefit		(34.0	)%		(34.0	)%		(34.0	)%
State income taxes, net of federal income tax benefit		(3.6	)		(3.8	)		(1.4	)
Research and development credits		(1.8	)		(13.8	)		(3.0	)
Valuation allowance		39.3			59.4			27.0
Other		0.5			(8.6	)		11.4
		0.4	%		0.8	%		0.0	%

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

	June 30,
	2012			2011			2010
Deferred tax assets:	(In thousands)
Net operating loss carry forwards	$	5,059		$	4,119		$	3,861
Capital loss and other credit carry forwards		178			21			20
Research and development credit carry forwards		1,244			1,148			994
Allowance for bad debts and returns		19			78			53
Inventory reserves		650			168			224
Capitalized inventory costs		17			16			24
Marketable securities		—			—			(24	)
Other accruals		500			514			507
Total gross deferred tax assets		7,667			6,064			5,659
Less valuation allowance on deferred tax assets		(7,654	)		(6,034	)		(5,620	)
Net deferred tax assets		13			30			39
Deferred tax liabilities:
Marketable securities		(3	)		(15	)		—
Depreciation and other		(10	)		(15	)		(39	)
Total deferred tax liabilities		(13	)		(30	)		(39	)
Net deferred taxes	$	—		$	—		$	—

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

	June 30,
	2012			2011			2010
Balance at July 1	$	21		$	25		$	34
Increases related to tax positions taken in prior year		4			9			1
Decreases due to lapse of statute of limitations		(1	)		(10	)		(8	)
Related interest and penalties, net of federal tax benefit		2			(3	)		(2	)
Balance at June 30	$	26		$	21		$	25