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Note 1 - Summary of Business and Significant Accounting Policies - Future Amortization Expense (Details) - USD ($)
$ in Thousands
Jan. 31, 2019
Feb. 01, 2018
Jan. 31, 2018
2020 $ 759    
2021 572    
2022 226    
2023 27    
Thereafter 14    
$ 1,598 $ 990 $ 990