Note E - Property, Plant and Equipment (Details) - Property, Plant and Equipment (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	$ 510,442	$ 483,873
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	2,496	2,496
Property, Plant and Equipment, Estimated Usful Lives	-
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	26,741	26,741
Property, Plant and Equipment, Estimated Usful Lives	-
Building [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	15
Building [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	39.5
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	179,331	172,529
Property, Plant and Equipment, Estimated Usful Lives	-
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	5
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	20
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	244,770	233,612
Property, Plant and Equipment, Estimated Usful Lives	-
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	5
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	7
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	5,953	4,879
Property, Plant and Equipment, Estimated Usful Lives	5
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	16,282	14,987
Property, Plant and Equipment, Estimated Usful Lives	-
Office Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	3
Office Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	5
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	24,917	22,889
Property, Plant and Equipment, Estimated Usful Lives	-
Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	5
Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Usful Lives	20
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	$ 9,952	$ 5,740
Property, Plant and Equipment, Estimated Usful Lives	-