Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheet Detail - Additional Information (Detail)

v3.21.2
Consolidated Balance Sheet Detail - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Disclosure Consolidated Balance Sheet Detail Additional Information Detail [Abstract]        
Depreciation expense $ 48 $ 71 $ 151 $ 214