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Note A - Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 24, 2016 USD ($) | Jun. 25, 2016 USD ($) | Mar. 26, 2016 USD ($) | Dec. 26, 2015 USD ($) | Sep. 26, 2015 USD ($) | Jun. 27, 2015 USD ($) | Mar. 28, 2015 USD ($) | Dec. 27, 2014 USD ($) | Sep. 24, 2016 USD ($) shares | Sep. 26, 2015 USD ($) shares | Sep. 27, 2014 USD ($)
Frozen Beverages [Member] | Machine Sales [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  |  | $ 24,664,000 | $ 25,536,000 | $ 22,826,000
Repair and Maintenance Service [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  |  | 24,571,000 | 25,534,000 | $ 22,748,000
Deferred Revenue |  | $ 1,671,000 |  |  |  | $ 1,579,000 |  |  |  | 1,671,000 | 1,579,000 |
Deferred Revenue, Noncurrent |  | 145,000 |  |  |  | 70,000 |  |  |  | 145,000 | $ 70,000 |
Customer Group One [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Net |  | 1,000,000 |  |  |  |  |  |  |  | 1,000,000 |  |
Customer Group One [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Net |  | $ 10,000,000 |  |  |  |  |  |  |  | $ 10,000,000 |  |
Customer Group One [Member] |  |  |  |  |  |  |  |  |  |  |  |
Approximate Number of Cusomters |  | 15 |  |  |  |  |  |  |  | 15 |  |
Largest Customer [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 8.00% | 8.00% | 8.00%
Minimum [Member] | 5 year options [Member] |  |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Term |  |  |  |  |  |  |  |  |  | 4 years 30 days |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  | 3 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term |  |  |  |  |  |  |  |  |  | 5 years |  |
Maximum [Member] | 5 year options [Member] |  |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Term |  |  |  |  |  |  |  |  |  | 4 years 210 days |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  | 20 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term |  |  |  |  |  |  |  |  |  | 10 years |  |
Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 42.00% | 43.00% | 43.00%
Ingredients and Packaging [Member] | Supplier Concentration Risk [Member] |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 0.00%
Ten Year Options [Member] |  |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Term |  |  |  |  |  |  |  |  |  | 10 years |  |
Sales Discounts, Returns and Allowances, Goods |  |  |  |  |  |  |  |  |  | $ 14,300,000 | $ 11,700,000 |
Shipping, Handling and Transportation Costs | [1] |  |  |  |  |  |  |  |  | 73,114,000 | 74,158,000 | $ 71,159,000
Revenue, Net |  | $ 262,240,000 | $ 277,981,000 | $ 229,710,000 | $ 222,850,000 | 259,772,000 | $ 278,724,000 | $ 225,008,000 | $ 212,752,000 | 992,781,000 | 976,256,000 | $ 919,451,000
Cash, Uninsured Amount |  | 100,000,000 |  |  |  |  |  |  |  | 100,000,000 |  |
Cash, FDIC Insured Amount |  | 250,000 |  |  |  |  |  |  |  | 250,000 |  |
Accounts Receivable, Net |  | $ 98,325,000 |  |  |  | 102,649,000 |  |  |  | $ 98,325,000 | 102,649,000 |
Employees Covered Under Collective Bargaining Agreement, Percentage |  | 30.00% |  |  |  |  |  |  |  | 30.00% |  |
Allowance for Doubtful Accounts Receivable |  | $ 571,000 |  |  |  | 304,000 |  |  |  | $ 571,000 | 304,000 |
Unrecognized Tax Benefits |  | 354,000 |  |  |  | 334,000 |  |  |  | 354,000 | 334,000 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued |  | 219,000 |  |  |  | $ 199,000 |  |  |  | $ 219,000 | $ 199,000 |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares |  |  |  |  |  |  |  |  |  | 180,170 | 1,500 |
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense |  |  |  |  |  |  |  |  |  | $ 885,000 |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized |  | 3,100,000 |  |  |  |  |  |  |  | $ 3,100,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate |  |  |  |  |  |  |  |  |  | 16.70% | 18.40% | 21.20%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate |  |  |  |  |  |  |  |  |  | 1.30% | 1.70% | 1.60%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate |  |  |  |  |  |  |  |  |  | 1.40% | 1.40% | 0.90%
Share-based Compensation Arrangement by Share-based Payment Award Fair Value Assumptions Expected Forfeiture Rate |  |  |  |  |  |  |  |  |  | 19.00% | 19.00% | 20.00%
Advertising Expense |  |  |  |  |  |  |  |  |  | $ 4,870,000 | $ 4,290,000 | $ 3,487,000
Commodity Futures Contracts and Spot Commodities, Proprietary Capital Charges |  | $ 75,000,000 |  |  |  |  |  |  |  | 75,000,000 |  |
Research and Development Expense |  |  |  |  |  |  |  |  |  | $ 525,000 | $ 506,000 | $ 499,000
[1] | Includes share-based compensation expense of $48 for the year ended September 24, 2016, $44 for the year ended September 26, 2015 and $42 for the year ended September 27, 2014.

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