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Note 6 - Goodwill and Intangible Assets - Future Amortization of Intangible Assets (Details) - USD ($)
$ in Thousands
Apr. 30, 2020
Jan. 31, 2020
2021 remaining $ 188  
2022 251  
2023 251  
2024 142  
Thereafter  
Net amortizable intangible assets $ 832 $ 985