Note 4 - Stock-based Compensation (Tables)

12 Months Ended

Jun. 30, 2017

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, 2014		75,388					424,612
Options granted		35,208			13.97		(35,208	)
Options exercised		(30,718	)		8.82		-
Options canceled		(25,571	)				25,571
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

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:
2015	$	4.68
2016		3.34
2017		2.76