Note 1 - Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

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, 2013	$	38	$	31	$	—	$	(1	)	$	68
Year Ended June 30, 2012	$	180	$	35	$	—	$	(177	)	$	38
Year Ended June 30, 2011	$	113	$	67	$	—	$	—		$	180

Schedule of Product Warranty Liability [Table Text Block]

	June 30,
	2013			2012
Beginning balance	$	205		$	198
Cost of warranty claims		(77	)		(46	)
Accruals for product warranties		62			53
Ending balance	$	190		$	205

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

	June 30, 2013
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash & Cash Equivalents		Short-term Marketable Securities		Long-term Marketable Securities
Level 1:
Cash		1,257		-		-			1,257		1,257
Money Market Funds		709		-		-			709		709
U.S. Treasury Securities		503		-		-			503		-		503		-
Subtotal	$	2,469	$	-		-		$	2,469	$	1,966	$	503	$	-
Level 2:
U.S. Agency Securities		544		-		(1	)		543		-		-		543
Corporate securities		4,915		1		(11	)		4,905		-		2,745		2,160
Municipal securities		5,728		15		-			5,743		-		2,900		2,843
Asset backed securities		127		-		-			127		-		127		-
Mortgage backed securities		30		-		-			30		-		30		-
Subtotal	$	11,344	$	16		(12	)	$	11,348		-	$	5,802	$	5,546
Total	$	13,813	$	16		(12	)	$	13,817	$	1,966	$	6,305	$	5,546

	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

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

	Year Ended June 30,
	2013			2012			2011
	(In thousands)
Loss:
Net loss	$	(10,363	)	$	(4,107	)	$	(680	)
Shares:
Weighted average shares for basic and diluted loss per share		12,253			12,253			12,253
Loss per share		(0.85	)		(0.34	)		(0.06	)