Note 11 - Income Taxes - Liability for Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Balance at beginning of the fiscal year	$ 648	$ 687	$ 746
Decreases — tax positions in prior period	(170)	(161)	(134)
Increases — tax positions in current period	50	122	75
Increases — tax positions in prior period	314
Settlements and payments	0	0	0
Lapse of statute of limitations	0	0	0
Balance at end of the fiscal year	$ 842	$ 648	$ 687