Note P - Accumulated Other Comprehensive Loss - Changes to the Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 29, 2018	Sep. 30, 2017
Balance	$ 682,322	$ 637,974
Balance	759,091	682,322
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(9,341)	(13,086)
Other comprehensive loss before reclassifications	(2,738)	3,745
Amounts reclassified from accumulated other comprehensive income
Balance	(12,079)	(9,341)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance	466	(329)
Other comprehensive loss before reclassifications	(455)	795
Amounts reclassified from accumulated other comprehensive income	74
Balance	85	466
AOCI Attributable to Parent [Member]
Balance	(8,875)	(13,415)
Other comprehensive loss before reclassifications	(3,193)	4,540
Amounts reclassified from accumulated other comprehensive income	74
Balance	$ (11,994)	$ (8,875)

Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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