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Product Warranty Liability - Activity in Product Warranty Liability (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2020
Product Warranties Disclosures [Abstract]      
Balance, beginning of the year $ 730 $ 850 $ 832
Provision for Warranty Expense 2,174 855 1,733
Cost of Warranty Repairs (2,070) (975) (1,715)
Balance, end of the year $ 834 $ 730 $ 850