Note 10 - Leases (Details Textual) $ in Thousands	Jun. 30, 2019 USD ($)
Lessee, Operating Lease, Lease Not yet Commenced, Present Value	$ 640
Minimum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	4 years
Maximum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	25 years