Note 2 - Marketable Securities (Tables)

12 Months Ended

Jun. 30, 2013

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

June 30, 2013	Amortized Cost		Unrealized Gain		Unrealized Loss			Fair Value
U.S. Treasury and U.S. Agency securities	$	1,047	$	—	$	(1	)	$	1,046
Mortgage backed securities		30		—		—			30
Municipal securities		5,728		15		—			5,743
Asset backed securities		127		—		—			127
Corporate securities		4,915		1		(11	)		4,905
Total	$	11,847	$	16	$	(12	)	$	11,851

June 30, 2012	Amortized Cost		Unrealized Gain		Unrealized Loss			Fair Value
U.S. Treasury and U.S. Agency securities	$	3,277	$	1	$	(1	)	$	3,277
Mortgage backed securities		2,525		—		(2	)		2,523
Municipal securities		3,471		6		—			3,477
Asset backed securities		1,629		1		—			1,630
Corporate securities		2,593		5		(1	)		2,597
Total	$	13,495	$	13	$	(4	)	$	13,504

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less Than 12 Months					12 Months or Greater					Total
June 30, 2013	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
	(In thousands)
U.S. Agency securities		-		-			543		(1	)		543		(1	)
Corporate securities		2,745		(3	)		2,160		(8	)		4,905		(11	)
Total	$	2,745	$	(3	)	$	2,703	$	(9	)	$	5,448	$	(12	)

	Less Than 12 Months					12 Months or Greater					Total
June 30, 2012	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
	(In thousands)
U.S. Agency securities		2,262		—			1,015		(1	)		3,277		(1	)
Corporate securities		1,696		—			901		(1	)		2,597		(1	)
Mortgage backed securities		169		(1	)		2,354		(1	)		2,523		(2	)
Total	$	4,127	$	(1	)	$	4,270	$	(3	)	$	8,397	$	(4	)

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30,
	2013		2012
Less than 90 days	$	—	$	—
Less than one year		6,305		7,135
Due in one to five years		5,546		6,369
	$	11,851	$	13,504