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Stockholders' Equity (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2019
Oct. 31, 2018
Total stock-based compensation $ (345) $ 189 $ (596) $ 491
2017 Plan        
Total stock-based compensation $ (345) $ 189 $ (596) $ 491