Note 11 - Employee Benefit Plans (Detail) - Net Periodic Pension Costs and Related Components (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Delaware Plan [Member] | Net [Member]
Recognized net actuarial loss		$ 49,000	$ 304,000	$ 195,000
Net periodic pension cost		61,000	286,000	206,000
Delaware Plan [Member]
Interest cost		146,000	193,000	211,000
Expected return on plan assets		(134,000)	(211,000)	(200,000)
Recognized net actuarial loss		218,000	69,000	182,000
SERP [Member]
Interest cost		301,000	282,000	278,000
Prior service cost	227,000	227,000	227,000	227,000
Amortization of net loss		91,000	34,000	31,000
Recognized net actuarial loss		1,085,000	297,000	95,000
Net periodic pension cost		836,000	719,000	701,000
Service cost		$ 217,000	$ 176,000	$ 165,000