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Note 10 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
   

December 31,

2021

 

2022

  $ 538  

2023

    349  

Total lease payments

    887  

Less present value discount

    (31

)

Present value of lease liabilities

  $ 856