Note 1 - Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2012

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, 2012	$	180	$	35	$	—	$	(177	)	$	38
Year Ended June 30, 2011	$	113	$	67	$	—	$	—		$	180
Year Ended June 30, 2010	$	85	$	25	$	—	$	3		$	113

Property, Plant and Equipment, Estimated Useful Lives

Machinery and equipment (in years)	5	-	7
Furniture and fixtures (in years)	5	-	7
Computer equipment (in years)	3	-	5

Schedule of Product Warranty Liability [Table Text Block]

	June 30,
	2012			2011
Beginning balance	$	198		$	156
Cost of warranty claims		(46	)		(79	)
Accruals for product warranties		53			121
Ending balance	$	205		$	198

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

	June 30, 2012
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash & Cash Equivalents		Short-term Marketable Securities		Long-term Marketable Securities
Level 1:
Cash		635		-		-			635		635		-		-
Money Market Funds		6,746		-		-			6,746		6,746		-		-
U.S. Treasury Securities		2,524		-		(1	)		2,523		-		1,508		1,015
Subtotal	$	9,905	$	-		(1	)	$	9,904	$	7,381	$	1,508		1,015
Level 2:
U.S. Agency Securities		753		1		-			754		-		754		-
Corporate securities		2,593		5		(1	)		2,597		-		1,696		901
Municipal securities		3,471		6		-			3,477		-		1,752		1,725
Asset backed securities		1,629		1		-			1,630		-		1,256		374
Mortgage backed securities		2,525		-		(2	)		2,523		-		169		2,354
Subtotal	$	10,971	$	13	$	(3	)	$	10,981		-	$	5,627	$	5,354
Total	$	20,876	$	13	$	(4	)	$	20,885	$	7,381	$	7,135	$	6,369

	June 30, 2011
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash & Cash Equivalents		Short-term Marketable Securities		Long-term Marketable Securities
Level 1:
Cash		865		-		-			865		865		-		-
Money Market Funds		4,105		-		-			4,105		4,105		-		-
U.S. Treasury Securities		2,541		8		-			2,549		-		2,409		140
Subtotal	$	7,511	$	8		-		$	7,519	$	4,970	$	2,409		140
Level 2:											-
U.S. Agency Securities		6,143		13		-			6,156		-		5,394		762
Corporate securities		3,181		5		-			3,186		-		2,256		930
Asset backed securities		2,964		6		-			2,970		-		467		2,503
Mortgage backed securities		2,826		8		(1	)		2,833		-		187		2,646
Subtotal	$	15,114	$	32	$	(1	)	$	15,145		-	$	8,304	$	6,841
Total	$	22,625	$	40	$	(1	)	$	22,664	$	4,970	$	10,713	$	6,981

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

	Year Ended June 30,
	2012			2011			2010
	(In thousands)
Loss:
Net loss	$	(4,107	)	$	(680	)	$	(3,121	)
Shares:
Weighted average shares for basic and diluted loss per share		12,253			12,253			12,253
Loss per share		(0.34	)		(0.06	)		(0.25	)