Note 14 - Leases (Details Textual)	6 Months Ended
	Jun. 30, 2019
Lessee, Lease, Termination Period	1 year
Minimum [Member]
Lease, Remaining Lease Term	1 year
Lessee, Lease, Renewal Term	3 years
Maximum [Member]
Lease, Remaining Lease Term	10 years
Lessee, Lease, Renewal Term	5 years