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Note 13 - Leases (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 4 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2020
Jun. 30, 2019
Lessee, Operating Lease, Renewal Term (Year) 5 years   5 years 5 years  
Lessee, Operating Lease, Option to Terminate Term (Year)       1 year  
Lessee, Operating Lease, Option to Extend, Amount       $ 600  
Lessee, Operating Lease, Lease Not yet Commenced, Future Minimum Payments Due $ 1,100   $ 1,100 1,100  
Increase (Decrease) in Operating Lease, Right-of-Use Asset $ 36 $ 41   $ 911 $ 4,468
Corporate Office Lease [Member]          
Increase (Decrease) in Operating Lease, Right-of-Use Asset     300    
Increase (Decrease) in Operating Lease Liability     $ 600    
Minimum [Member]          
Lessee, Operating Lease, Remaining Lease Term (Year) 1 year   1 year 1 year  
Maximum [Member]          
Lessee, Operating Lease, Remaining Lease Term (Year) 20 years   20 years 20 years