Note 11 - Leases (Details Textual) $ in Thousands	Dec. 31, 2019 USD ($)
Lessee, Operating Lease, Lease Not yet Commenced, Present Value	$ 464
Minimum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	7 years
Maximum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	25 years