Note 11 - Income Taxes - Liability for Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Balance at beginning of the fiscal year	$ 842	$ 648	$ 687
Decreases — tax positions in prior period	(185)	(170)	(161)
Increases — tax positions in current period	41	50	122
Increases – tax positions in prior period	42	314
Settlements and payments	(4)	0	0
Lapse of statute of limitations	0	0	0
Balance at end of the fiscal year	$ 736	$ 842	$ 648