Income Taxes - Summary of Valuation Allowances Against Net Deferred Income Tax Assets (Detail) - USD ($) $ in Thousands |
Aug. 03, 2025 |
Apr. 27, 2025 |
Jul. 28, 2024 |
|---|---|---|---|
| Valuation Allowance [Line Items] | |||
| Valuation allowance | $ 26,991 | $ 26,303 | $ 23,656 |
| U.S. Capital Loss Carryforward [Member] | |||
| Valuation Allowance [Line Items] | |||
| Valuation allowance | 2,330 | 2,330 | 2,330 |
| U.S. Federal and State [Member] | Deferred Income Tax Assets [Member] | |||
| Valuation Allowance [Line Items] | |||
| Valuation allowance | $ 24,661 | $ 23,973 | $ 21,326 |