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Credit Agreement and Debt - Additional Information (Detail) - USD ($) |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 21 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 24, 2021 | Jul. 31, 2025 | Apr. 30, 2025 | Jul. 31, 2021 | Aug. 01, 2020 | Jul. 31, 2021 | Aug. 01, 2020 | Jan. 31, 2023 | Jan. 31, 2022 | Jan. 31, 2025
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving credit facility |  |  |  | $ 0 |  | $ 0 |  |  |  |
Interest Expense, Debt |  |  |  | $ 65,000 | $ 73,000 | $ 179,000 | $ 152,000 |  |  |
Principal payment terms |  |  |  |  |  | the principal amount of each quarterly installment required to be paid on the last day of each of our fiscal quarters ending on or about April 30, 2021 through January 31, 2022 is $187,500; the principal amount of each quarterly installment required to be paid on the last day of each of our fiscal quarters ending on or about April 30, 2022 through January 31, 2023 is $250,000; the principal amount of each quarterly installment required to be paid on the last day of each of our fiscal quarters ending on or about April 30, 2023 through January 31, 2025 is $312,500; the principal amount of each quarterly installment required to be paid on the last day of each of our fiscal quarters ending on or about April 30, 2025 and July 31, 2025 is $500,000; and the entire remaining principal balance of the term loan is required to be paid on September 30, 2025. |  |  |  |
Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Longterm Debt instrument, maturity date |  |  |  | Sep. 30, 2025 |  | Sep. 30, 2025 |  |  |  |
Debt Instrument, Frequency of Periodic Payment |  |  |  |  |  | quarterly installment |  |  |  |
Term Loan [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, principal Periodic payment |  | $ 500,000 | $ 500,000 |  |  |  |  | $ 250,000 | $ 187,500 | $ 312,500
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Variable interest rate |  |  |  |  |  | 0.50 |  |  |  |
LIBOR [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 1.00% |  |  |  |
Federal Funds Effective Swap Rate [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 0.50% |  |  |  |
Minimum [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Commitment fee rate |  |  |  |  |  | 0.15% |  |  |  |
Percentage added to variable rate |  |  |  |  |  | 0.60% |  |  |  |
Minimum [Member] | LIBOR [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 1.60% |  |  |  |
Maximum [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Commitment fee rate |  |  |  |  |  | 0.30% |  |  |  |
Percentage added to variable rate |  |  |  |  |  | 1.30% |  |  |  |
Maximum [Member] | LIBOR [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 2.30% |  |  |  |
Bank of America, N.A. [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Term loans repaid | $ 2,600,000 |  |  |  |  |  |  |  |  |
Bank of America, N.A. [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  | $ 10,000,000.0 |  | $ 10,000,000.0 |  |  |  |
Term loan, principal amount |  |  |  | 10,000,000.0 |  | 10,000,000.0 |  |  |  |
Bank of America, N.A. [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving credit facility |  |  |  | 0 |  | 0 |  |  |  |
Interest Expense, Debt |  |  |  | 0 |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | 22,500,000 |  | 22,500,000 |  |  |  |
Line of credit remaining borrowing capacity |  |  |  | 22,500,000 |  | 22,500,000 |  |  |  |
Bank of America, N.A. [Member] | Revolving Credit Facility [Member] | Interest Expense [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest Expense, Debt |  |  |  |  | $ 94,000 | 0 | $ 166,000 |  |  |
Commitement fees on the undrawn portion of the credit facility |  |  |  | 30,125 |  |  |  |  |  |
Payment of fees on the undrawn portion of the credit facility |  |  |  | 30,125 |  |  |  |  |  |
Bank of America, N.A. [Member] | Maximum [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  | 10,000,000.0 |  | 10,000,000.0 |  |  |  |
Term loan, principal amount |  |  |  | $ 10,000,000.0 |  | $ 10,000,000.0 |  |  |  |

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