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Note 6 - Leases (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Year ending December 31,
 
Amount(1)
 
2020
  $
1,914
 
2021
   
1,783
 
2022
   
1,574
 
2023
   
1,355
 
2024
   
1,070
 
2025 and thereafter
   
3,789
 
Total future minimum lease payments
  $
11,485
 
Less: Interest(2)
   
(1,941
)
Present value of operating lease liabilities(3)
  $
9,544