Note 4 - Stock-based Compensation (Tables)

12 Months Ended

Jun. 30, 2018

Notes Tables

Share-based Compensation, Stock Options, Activity [Table Text Block]

	Shares On Option			Weighted Average Exercise Price		Shares Available For Grant
Balance, June 30, 2015		54,307					414,975
Options granted		52,836			9.37		(52,836	)
Options exercised		(15,523	)		9.57		-
Options canceled		(27,705	)				27,705
Balance, June 30, 2016		63,915					389,844
Options granted		55,766			7.88		(55,766	)
Options exercised		(10,893	)		8.34		-
Options canceled		(31,503	)				31,503
Balance, June 30, 2017		77,285					365,581
2012 Plan Expired		-					(365,581	)
2017 Plan Authorized		-					500,000
Options granted		63,607			6.35		(63,607	)
Options exercised		(17,561	)		6.69		-
Options canceled		(52,816	)				13,614
Balance, June 30, 2018		70,515					450,007

Share-based Compensation, Performance Shares Award Outstanding Activity [Table Text Block]

Weighted average remaining life (years)		1.3
Weighted average fair value on grant date of options granted in:
2016	$	3.34
2017		2.76
2018		2.23