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Note I - Income Taxes (Details Textual) - USD ($) | 12 Months Ended
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Sep. 28, 2019 | Sep. 29, 2018 | Sep. 30, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 24.50% | 35.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability |  | $ (20,700,000) |
Income Tax Expense (Benefit), Continuing Operations, Changed in Tax Rate, Tax Cut and Jobs Act |  | (8,800,000) |
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount |  | $ 1,200,000 | $ 0
Effective Income Tax Rate Reconciliation, Percent, Total | 25.80% | 27.70% |
Effective Income Tax Rate Reconciliation, Changed in Prior Tax for Repatriation of Foreign Earnings, Amount | $ (885,000) |  |
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Total |  | $ 315,000 |
New Jersey Division of Taxation [Member] | State and Local Jurisdiction [Member] |  |  |
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability |  | 1,400,000 |
Internal Revenue Service (IRS) [Member] | Domestic Tax Authority [Member] | PHILLY SWIRL [Member] |  |  |
Operating Loss Carryforwards, Total | $ 4,500,000 | 4,000,000 |
Operating Loss Carryforwards, Subject to Limitation and Expiration |  | 378,000 |
Operating Loss Carryforwards, Valuation Allowance, Total |  | $ 0 |

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to change in prior year tax for repatriation of foreign earnings. + References No definition available. + Details
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- Definition Amount of income tax expense (benefit) from continuing operations attributable to changed in tax rate by the Tax Cut and Jobs Act. + References No definition available. + Details
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- Definition Amount of operating loss carryforwards that are subject to limitation and expiration under Code Section 382. + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to repatriation of foreign earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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