Note 16 - Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Operating Leases, Rent Expense	$ 693,400	$ 684,100	$ 634,000
The 401K Plan [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	83,288	94,287	$ 97,607
Lease and Loan Commitments [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 41,800,000	$ 57,000,000