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Note 4 - Leases (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Maturity of Operating Lease Liabilities

    

Remainder of 2021

 $11 

2022

  37 

2023

  30 

2024

  26 

2025

  20 

After 2025

  203 

Total lease payments

  327 

Less: Interest

  (121)

Present value of lease liabilities

 $206 
Lease, Cost [Table Text Block]
  

September 30,

 

Operating Lease Term and Discount Rate

 

2021

 

Weighted-average remaining lease term (years)

  13 

Weighted-average discount rate

  6.8%