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BALANCE SHEET DETAILS - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Oct. 31, 2019
Jan. 31, 2019
Jan. 31, 2018
Accrued liabilities:      
Research and development $ 119 $ 399 $ 404
Payroll 417 371 368
Legal   45 438
Purchase commitment liability     215
Deferred Revenue     8
Other 67 164 170
Total $ 863 $ 934 $ 1,603