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Note 7 - Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Remainder of 2022

  $ 219  

Years ending December 31,

       

2023

    1,345  

2024

    1,379  

2025

    543  

Total minimum lease payments

    3,486  

Less: amount of lease payments representing interest

    (267 )

Present value of future minimum lease payments

    3,219  

Less: operating lease obligations, current portion

    (1,075 )

Operating lease obligations, long-term portion

  $ 2,144