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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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