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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019 | May 06, 2020
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Highly liquid investments with an original maturity | 90 days or less |  |  |
Cash of held in foreign bank accounts | $ 4,600,000 | $ 3,400,000 |  |
Net transactional foreign exchange losses | 600,000 | 400,000 | $ 700,000 |
Advertising expense | 900,000 | 1,800,000 | 1,900,000 |
Impairment of Long lived assets held for use | 0 | 0 | 0 |
Impairment of intangible assets | $ 0 | $ 0 | $ 0 |
Number of common equivalent shares | 642,623 | 202,187 | 326,275 |
No compensation expense is recognized on forfeited options | $ 0 |  |  |
Liability for self-insured claims | 200,000 | $ 600,000 |  |
Green wood Credit Union [Member] | Paycheck Protection Program Loan [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Debt instrument face amount |  |  |  | $ 4,400,000
Promissory Note [Member] | Paycheck Protection Program Loan [Member] | Greenwood Credit Union [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Debt related commitment fees and debt issuance costs | $ 4,400,000 |  |  |
Maximum [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of revenue satisfied for services | 10.00% | 10.00% |  |
Maximum [Member] | Airborne Product [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Products warranty period | 5 years |  |  |
Minimum [Member] | Airborne Product [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Products warranty period | 3 years |  |  |
Land Improvements [Member] | Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 20 years |  |  |
Land Improvements [Member] | Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 10 years |  |  |
Building And Leasehold Improvements [Member] | Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 45 years |  |  |
Building And Leasehold Improvements [Member] | Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 10 years |  |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 10 years |  |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 3 years |  |  |
Computer Equipment And Software [Member] | Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 10 years |  |  |
Computer Equipment And Software [Member] | Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of the assets | 3 years |  |  |

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