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v3.25.2

Nature of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Apr. 26, 2025 | Apr. 27, 2026 | Apr. 26, 2025 | Apr. 27, 2024 | Apr. 29, 2023 | May 11, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |
Contract with customer assets | $ 41,169,000 |  | $ 41,169,000 | $ 55,800,000 |  |
Gross profit |  |  | 195,487,000 | 222,443,000 | $ 151,355,000 |
Equity method investments | 0 |  | 0 | 1,813,000 |  |
Income (loss) from equity method investments |  |  | (3,053,000) | (3,764,000) | (3,332,000) |
Impairment | 4,576,000 |  | 4,576,000 | 4,576,000 |  |
Equity investees impairment |  |  | 0 | 6,359,000 | 4,473,000 |
Accounts payable | 75,000 |  | 75,000 | 146,000 |  |
Amount invested |  |  | 4,565,000 | 5,050,000 | 4,315,000 |
Purchase of convertible notes | 19,843,000 |  | 19,843,000 | 14,241,000 |  |
Financing receivable, credit loss, expense (reversal) |  |  | 15,480,000 | 0 | 0 |
Investment in affiliates loss, amount |  |  |  | 0 |  |
Convertible note and investment in affiliates, amount |  |  | 3,123,000 | 16,054,000 |  |
Cash and cash equivalents | 127,507,000 |  | 127,507,000 | 81,299,000 | 23,982,000 |
Capitalized contract cost, net | 321,000 |  | 321,000 | $ 384,000 |  |
Self insured, individual retention | $ 250,000 |  | $ 250,000 |  |  |
Common stock, par value (in dollar per share) | $ 0.00001 |  | $ 0.00001 | $ 0.00001 |  |
Antidilutive securities excluded from computation of earnings per share, amount (in shares) | 2,218,000 |  |  |  |  |
Forecast |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Convertible note and investment in affiliates, amount |  | $ 400,000 |  |  |  |
Geographic Distribution, Foreign |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Cash and cash equivalents | $ 14,749,000 |  | $ 14,749,000 |  |  |
Subsidiaries | Geographic Distribution, Foreign |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Cash and cash equivalents | 12,309,000 |  | 12,309,000 |  |  |
Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Contract with customer assets | 0 |  | 0 | $ 1,955,000 |  |
Contract with customer, liability | 41,000 |  | 41,000 | 38,000 |  |
Gross profit |  |  | 89,000 | 2,761,000 |  |
United States of America, Dollars |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Cash and cash equivalents | 112,758,000 |  | 112,758,000 |  |  |
United States of America, Dollars | Subsidiaries |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Cash and cash equivalents | $ 932,000 |  | 932,000 |  |  |
Product Design And Development |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Related party transaction, amounts of transaction |  |  | $ 771,000 | 577,000 | 672,000 |
Miortech |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage | 55.90% |  | 55.90% |  |  |
Impairment |  |  |  |  | $ 4,473,000 |
XdisplayTM |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage | 16.40% |  | 16.40% |  |  |
Convertible note |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Amount invested |  |  | $ 4,565,000 | 5,050,000 |  |
Interest payable | $ 838,000 |  | $ 838,000 | $ 449,000 |  |
Antidilutive securities excluded from computation of earnings per share, amount (in shares) |  |  |  | 3,915,000 |  |
Debt instrument, face amount |  |  |  | $ 25,000,000 |  | $ 25,000,000
Stock options |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share, amount (in shares) |  |  | 49,000 | 675,000 | 2,084,000 |
Antidilutive securities excluded from computation of earnings per share, weighted average exercise price (in dollars per share) |  |  | $ 10.57 | $ 10.29 | $ 7.47 |
Minimum |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Product warranty accrual, standard parts warranty coverage term (year) |  |  | 1 year |  |  |
Product warranty accrual, installation warranty coverage term (year) |  |  | 1 year |  |  |
Maximum |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Product warranty accrual, standard parts warranty coverage term (year) |  |  | 5 years |  |  |
Product warranty accrual, installation warranty coverage term (year) |  |  | 10 years |  |  |

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