Note 1 - Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2015

Notes Tables

Summary of Valuation Allowance [Table Text Block]

Description	Balance at Beginning of Period		Charged to Costs and Expenses		Charged to Other Accounts		Deductions (1)			Balance at End of Period
Year Ended June 30, 2015	$	92	$	—	$	—	$	(77	)	$	15
Year Ended June 30, 2014	$	68	$	49	$	—	$	(25	)	$	92
Year Ended June 30, 2013	$	38	$	31	$	—	$	(1	)	$	68

Schedule of Product Warranty Liability [Table Text Block]

	June 30,
	2015			2014
Beginning balance	$	159		$	190
Cost of warranty claims		(55	)		(45	)
Accruals for product warranties		50			14
Ending balance	$	154		$	159

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	June 30, 2015
	Adjusted Cost		Unrealized Gains		Unrealized Losses		Fair Value		Cash & Cash Equivalents		Short-term Marketable Securities		Long-term Marketable Securities
Level 1:
Cash		663		-		-		633		633		-		-
Money Market Funds		4,033		-		-		4,033		4,033		-		-
Total	$	4,696	$	-	$	-	$	4,696	$	4,696	$	-	$	-

	June 30, 2014
	Adjusted Cost		Unrealized Gains		Unrealized Losses		Fair Value		Cash & Cash Equivalents		Short-term Marketable Securities		Long-term Marketable Securities
Level 1:
Cash		617		-		-		617		617		-		-
Money Market Funds		4,845		-		-		4,845		4,845		-		-
Subtotal	$	5,462	$	-	$	-	$	5,462	$	5,462	$	-	$	-
Level 2:
U.S. Agency Securities		332		-		-		332		-		332		-
Corporate securities		1,354		1		-		1,355		-		1,355		-
Municipal securities		76		-		-		76		-		76		-
Subtotal	$	1,762	$	1	$	-	$	1,763		-	$	1,763	$	-
Total	$	7,224	$	1	$	-	$	7,225	$	5,462	$	1,763	$	-

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year Ended June 30,
	2015			2014			2013
	(In thousands)
Loss:
Net loss	$	(1,308	)	$	(5,624	)	$	(10,363	)
Shares:
Weighted average shares for basic and diluted loss per share		12,253			12,253			12,253
Loss per share		(0.11	)		(0.46	)		(0.85	)