Note 6 - Cash, Cash Equivalents and Marketable Securities Recorded at Fair Value (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Cash and Cash Equivalents [Abstract]
Marketable Securities, Realized Gain (Loss)			$ 0	$ (47,000)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	$ (7,000)	$ 9,000	$ (1,000)	$ 14,000