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Note 8 - Leases (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Lease, Cost [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

June 30,

   

June 30,

 
   

2020

   

2019

   

2020

   

2019

 

Lease expense

                               

Operating lease expense

  $ 3     $ 3     $ 6     $ 6  

Short-term lease expense

    -       -       1       1  

Total lease expense

  $ 3     $ 3     $ 7     $ 7  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Year ending December 31,

 

Operating Leases

 

Remainder of 2020

 $5 

2021

  10 

2022

  10 

2023

  8 

2024

  8 

Thereafter

  47 

Total lease payments

  88 

Less: Imputed interest

  (27)

Present value of lease liabilities

 $61