Note 4 - Stock-based Compensation (Tables)

12 Months Ended

Jun. 30, 2019

Notes Tables

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Shares on Options			Weighted Average Exercise Price		Shares Available for Grant
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
Options granted		55,227			5.45		(55,227	)
Options exercised		(11,981	)		5.72		-
Options canceled		(26,628	)				18,087
Balance, June 30, 2019		87,133					412,867

Share-based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]

Weighted average remaining life (years)		1.3
Weighted average fair value on grant date of options granted in:
2017	$	2.76
2018		2.23
2019		2.28