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Note B - Acquisitions (Details Textual) - USD ($)				3 Months Ended								12 Months Ended
	Aug. 16, 2017	May 22, 2017	Dec. 30, 2016	Sep. 30, 2017	Jun. 24, 2017	Mar. 25, 2017	Dec. 24, 2016	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 30, 2017	Sep. 24, 2016	Sep. 26, 2015
Revenue, Net				$ 316,726,000	$ 295,415,000	$ 246,513,000	$ 225,570,000	$ 262,240,000	$ 277,981,000	$ 229,710,000	$ 222,850,000	$ 1,084,224,000	$ 992,781,000	$ 976,256,000
Operating Income (Loss)												118,107,000	$ 112,810,000	$ 110,888,000
Hill & Valley Inc. [Member]
Minimum Annual Revenues			$ 45,000,000
Labriola Baking Company [Member]
Minimum Annual Revenues	$ 17,000,000
Hill & Valley Inc. [Member]
Payments to Acquire Businesses, Gross			$ 31,000,000
Revenue, Net												35,800,000
Operating Income (Loss)												653,000
ICEE Distributor [Member]
Payments to Acquire Businesses, Gross		$ 11,000,000
Revenue, Net												1,689,000
Operating Income (Loss)												395,000
Labriola Baking Company [Member]
Payments to Acquire Businesses, Gross	$ 6,000,000
Revenue, Net												2,061,000
Hill & Valley, Inc., ICEE Distributor, and Labriola Baking Company [Member] | Other Expense [Member]
Business Combination, Acquisition Related Costs												$ 1,070,000

X

- Definition

Amount of minimum annual revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

No definition available.

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X

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460

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X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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X

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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