Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Summary of Cash, Cash Equivalents, and Restricted Cash Total (Detail)

v3.19.2
Significant Accounting Policies - Summary of Cash, Cash Equivalents, and Restricted Cash Total (Detail) - USD ($)
$ in Thousands
Jul. 31, 2019
Jan. 31, 2019
Jul. 31, 2018
Jan. 31, 2018
Accounting Policies [Abstract]        
Cash and cash equivalents $ 9,202 $ 20,317 $ 24,393  
Restricted cash     547  
Total cash, cash equivalents and restricted cash $ 9,202 $ 20,317 $ 24,940 $ 43,661