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Debt - Schedule of Future Principal Repayments of Long-Term Debt (Details) - USD ($)
$ in Thousands
Jul. 31, 2019
Jan. 31, 2018
Senior Term Loan    
2020 $ 1,298  
2021 3,433  
Total 4,731 $ 4,030
Term Loan    
Senior Term Loan    
Total 3,731 4,030
Deferred finance costs $ 53 $ 82