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Note 3 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Year Ending December 31,

Payment (in $1,000s)

2022

$                             281 

2023

289

2024

298

2025

230

Total$                          1,098