Note 10 - Leases (Details Textual) $ in Thousands	Mar. 31, 2020 USD ($)
Lessee, Operating Lease, Lease Not yet Commenced, Present Value	$ 8,928
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	10 years
Minimum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	7 years
Maximum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	25 years