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Note A - Summary of Significant Accounting Policies (Details Textual) $ in Thousands | 12 Months Ended
--- | ---
Sep. 27, 2025 USD ($) shares | Sep. 28, 2024 USD ($) shares | Sep. 30, 2023 USD ($) shares | Sep. 24, 2022
Contract with Customer, Asset, Allowance for Deductions | $ 22,300 | $ 21,900 |  |
Accounts Receivable, Allowance for Credit Loss | 3,300 | 3,200 | $ 3,200 |
Accounts Receivable, after Allowance for Credit Loss | $ 184,100 | 189,200 | $ 198,100 |
Employees Covered Under Collective Bargaining Agreement, Percentage | 28.00% |  |  |
Unrecognized Tax Benefits | $ 343 | 343 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | $ 300 | $ 300 |  |
Effective Income Tax Rate Reconciliation, Percent | 24.10% | 27.20% | 26.60% |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares | 207,171 | 152,381 | 252,044 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares | 0 | 0 | 0 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate |  |  |  | 25.80%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate |  |  |  | 0.80%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate |  |  |  | 1.60%
Advertising Expense | $ 11,900 | $ 11,100 | $ 9,700 |
Unrecorded Unconditional Purchase Obligation | 133,000 |  |  |
Research and Development Expense | $ 1,400 | $ 1,200 | $ 1,200 |
Five Year Options [Member] |  |  |  |
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions Volatility Calculation Term (Month) |  |  |  | 51 months
Ten Year Options [Member] |  |  |  |
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions Volatility Calculation Term (Month) |  |  |  | 10 years
Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period | shares | 34,868 | 25,957 | 21,864 |
Performance Shares [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period | shares | 17,500 | 14,506 | 21,260 |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Certificates of Deposit, at Carrying Value | $ 5,200 | $ 5,200 |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |
Number of Major Customers | 10 | 10 | 10 |
Minimum [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years | 2 years |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term |  |  |  | 4 years
Maximum [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 20 years |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term |  |  |  | 10 years
Customer Group One [Member] |  |  |  |
Approximate Number of Customers | 21 |  |  |
Customer Group One [Member] | Minimum [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss | $ 1,000 |  |  |
Customer Group One [Member] | Maximum [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss | $ 10,000 |  |  |
Balance Over 10 Million [Member] |  |  |  |
Number of Major Customers | 5 |  |  |
Balance Over 10 Million [Member] | Minimum [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss | $ 10,000 |  |  |
Largest Customer [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss | $ 25,000 |  |  |
Largest Customer [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |
Concentration Risk, Percentage | 10.00% | 9.00% | 9.00% |
Top Ten Customers [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |
Concentration Risk, Percentage | 46.00% | 45.00% | 43.00% |
UNITED STATES |  |  |  |
Cash, Uninsured Amount | $ 47,000 |  |  |
Non-US [Member] |  |  |  |
Cash, Uninsured Amount | $ 56,000 |  |  |

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