Note 2 - Marketable Securities (Details) - Gross Unrealized Losses and Fair Value of the Company's Investments (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013
Note 2 - Marketable Securities (Details) - Gross Unrealized Losses and Fair Value of the Company's Investments [Line Items]
Less Than 12 Months Fair Value	$ 2,745
Less Than 12 Months Unrealized Loss	(3)
12 Months or Greater Fair Value	2,703
12 Months or Greater Unrealized Loss	(9)
Total Fair Value	5,448
Total Unrealized Loss	(12)
US Government Agencies Debt Securities [Member]
Note 2 - Marketable Securities (Details) - Gross Unrealized Losses and Fair Value of the Company's Investments [Line Items]
Less Than 12 Months Fair Value	0
Less Than 12 Months Unrealized Loss	0
12 Months or Greater Fair Value	543
12 Months or Greater Unrealized Loss	(1)
Total Fair Value	543
Total Unrealized Loss	(1)
Corporate Debt Securities [Member]
Note 2 - Marketable Securities (Details) - Gross Unrealized Losses and Fair Value of the Company's Investments [Line Items]
Less Than 12 Months Fair Value	2,745
Less Than 12 Months Unrealized Loss	(3)
12 Months or Greater Fair Value	2,160
12 Months or Greater Unrealized Loss	(8)
Total Fair Value	4,905
Total Unrealized Loss	$ (11)