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Note 7 - Stock Based Compensation (Detail) - Table of Estimated Future Stock-Based Compensation Expense Relating to Stock Options (USD $)	12 Months Ended							60 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2016
Future share base compensation expense	$ 9,000	$ 32,000	$ 122,000	$ 275,000	$ 1,129,000	$ 1,328,000	$ 715,000	$ 438,000

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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