Note 10 - Leases and Purchase Commitments (Details Textual) - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Minimum [Member]
Lessee Leasing Arrangements, Operating Leases, Renewal Term	1 year
Maximum [Member]
Lessee Leasing Arrangements, Operating Leases, Renewal Term	5 years
Contractual Obligation	$ 20,824,000	$ 23,942,000
Operating Leases, Rent Expense	$ 2,027,000	$ 1,876,000	$ 1,783,000