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Note 6 - Stock-based Compensation (Details Textual) - USD ($) | 12 Months Ended
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Mar. 29, 2025 | Mar. 29, 2025 | Mar. 30, 2024 | Mar. 30, 2024 | Mar. 25, 2023 | Mar. 25, 2023
Share-Based Payment Arrangement, Expense, Tax Benefit | $ 1,300,000 |  |  | $ 600,000 |  | $ 400,000
Share-Based Payment Arrangement, Expense | $ 3,200,000 |  |  | $ 4,500,000 |  | 3,400,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 10,000 |  |  | 47,000 | 56,000 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value |  | $ 3,200,000 |  | $ 1,300,000 |  | 300,000
Proceeds from Stock Options Exercised | $ 1,300,000 |  | $ 1,500,000 |  |  | $ 100,000
Individual Employee [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  | 5 years |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  | 10,000 |  |
Director [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  | 5 years |  | 5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  | 30,000 |  | 10,000
Each Director [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  | 10,000 |  |
Performance-based Restricted Stock Units [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 10,000 |  |  | 10,000 |  | 11,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Percentage of Shares Awarded for Share Based Payment Awards | 150.00% |  |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Expense | $ 2,400,000 |  |  | $ 3,200,000 |  | $ 2,000,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 4,200,000 | 4,200,000 |  |  |  |
Restricted Stock Units (RSUs) [Member] | Maximum [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 5,500,000 | 5,500,000 |  |  |  |
Restricted Stock Units (RSUs) [Member] | Non-employee Director [Member] |  |  |  |  |  |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | $ 85,000 |  |  | $ 50,000 |  | $ 50,000
Time-vested Restricted Stock Units [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 32,000 |  |  | 38,000 |  | 19,000
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 5 years |  |  |  |  | 3 years
Share-Based Payment Arrangement, Expense | $ 800,000 |  |  | $ 1,300,000 |  | $ 1,400,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 1,400,000 | $ 1,400,000 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% |  |  | 0.00% |  | 0.00%
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 3 years |  |  |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Employee [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 10,000 |  |  | 7,000 |  | 46,000
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Employee [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years |  |  | 3 years |  |
Share-Based Payment Arrangement, Option [Member] | Maximum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | 10 years |  |  |  |  |
Share-Based Payment Arrangement, Option [Member] | Minimum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | 5 years |  |  |  |  |
The 2021 Plan [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | 600,000 | 600,000 |  |  |  |

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