Note 11 - Income Taxes - Liability for Uncertain Tax Positions (Details) - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Balance at beginning of the fiscal year	$ 687,000	$ 746,000	$ 969,000
Decreases — tax positions in prior period	(161,000)	(134,000)	(225,000)
Increases — tax positions in current period	122,000	75,000	2,000
Settlements and payments	0	0	0
Lapse of statute of limitations	0	0	0
Balance at end of the fiscal year	$ 648,000	$ 687,000	$ 746,000