Note 9 - Nonvested Share Activity (Details) - $ / shares	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Nonvested (in shares)	100,000
Nonvested, weighted-average grant-date fair value (in dollars per share)	$ 0.76
Granted, options (in shares)	100,000	957,500
Granted, weighted-average grant-date fair value (in dollars per share)	$ 0.59
Vested (in shares)	(150,000)
Vested, weighted-average grant-date fair value (in dollars per share)	$ (0.65)
Nonvested (in shares)	50,000	100,000
Nonvested, weighted-average grant-date fair value (in dollars per share)	$ 0.76	$ 0.76