Note I - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 24, 2016
Increase (Decrease) in Deferred Income Taxes		$ 6,632,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	24.50%	35.00%	35.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ (20,900,000)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	(20,670,000)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 1,200,000
Effective Income Tax Rate Reconciliation, Percent, Total	27.80%	35.20%
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 1,935,000	$ 3,061,000	$ 1,980,000
Capital Loss Carryforward [Member]
Tax Credit Carryforward, Amount	4,200,000
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	4,000,000
Operating Loss Carryforwards, Subject to Limitation and Expiration	378,000
Operating Loss Carryforwards, Valuation Allowance, Total	$ 0