Note 5 - Restructuring Charges and Acquisition Costs (Detail) - Summaries of the Restructuring Activities and Associated Costs Incurred (USD $)	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Liability	$ 0	$ 254,000	$ 0
Restructuring charges		9,927,000
Gain on sale of assets held for sale		(1,609,000)
Restructuring charges	832,000	8,318,000
Cash payments	(1,097,000)	(4,239,000)
Non-cash charges	11,000	(3,825,000)
Employee Severance [Member]
Liability	0	65,000	0
Restructuring charges		2,263,000
Restructuring charges	(40,000)	2,263,000
Cash payments	(25,000)	(2,198,000)
Asset Impairment Charges [Member]
Liability	0		0
Restructuring charges		3,825,000
Restructuring charges	(11,000)	3,825,000
Non-cash charges	11,000	(3,825,000)
Facility Closing [Member]
Liability	0	77,000	0
Restructuring charges		2,606,000
Gain on sale of assets held for sale		(1,609,000)
Restructuring charges	139,000	997,000
Cash payments	(216,000)	(920,000)
Equipment Relocation Costs [Member]
Liability	0	112,000	0
Restructuring charges		1,233,000
Restructuring charges	744,000	1,233,000
Cash payments	$ (856,000)	$ (1,121,000)