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BALANCE SHEET DETAILS - Accrued expenses and other current liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2020
Jan. 31, 2019
Accrued expenses and other current liabilities:    
Fair value of common stock liability $ 383  
Operating lease liability - current portion 260  
Legal 138 $ 45
Compensation 51 371
Research and development 49 399
Other 61 119
Accrued expenses and other current liabilities $ 942 $ 934