Note 11 - Employee Benefit Plans - Projected Benefit Obligation Reconciliation (Details) - USD ($)	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Pension Plan [Member] | Change in Benefit Obligation [Member]
Distributions	$ (259,000)	$ (206,000)	$ (202,000)
Pension Plan [Member] | Change in Plan Assets [Member]
Distributions	(259,000)	(210,000)	(202,000)
Pension Plan [Member]
Benefit obligation	3,078,000	2,973,000	3,181,000
Interest cost	130,000	137,000	128,000
Actuarial loss (gain)	514,000	174,000	(134,000)
Benefit obligation	3,463,000	3,078,000	2,973,000
Fair value of plan assets	2,253,000	2,045,000	1,739,000
Actual return on plan assets	(27,000)	178,000	201,000
Employer contributions	234,000	240,000	307,000
Fair value of plan assets	2,201,000	2,253,000	2,045,000
Funded status	(1,263,000)	(825,000)	(928,000)
Net amount recognized	(1,263,000)	(825,000)	(928,000)
Accrued benefit liability	(1,263,000)	(825,000)	(928,000)
Accumulated other comprehensive loss (net of tax)	1,197,000	782,000	706,000
Net amount recognized	(66,000)	(43,000)	(222,000)
Unrecognized net loss	1,930,000	1,261,000	1,138,000
Net amount recognized	1,930,000	1,261,000	1,138,000
Net loss (gain)	723,000	165,000	(192,000)
Amortization of net loss	(53,000)	(43,000)	(56,000)
Total recognized in other comprehensive income (loss)	670,000	122,000	(248,000)
Supplemental Employee Retirement Plan [Member]
Benefit obligation	7,480,000	6,938,000	7,461,000
Interest cost	323,000	315,000	287,000
Actuarial loss (gain)	21,000	298,000	(807,000)
Distributions	(290,000)	(290,000)	(245,000)
Benefit obligation	7,821,000	7,480,000	6,938,000
Fair value of plan assets	0	0
Employer contributions	290,000	290,000	245,000
Fair value of plan assets	0	0	0
Funded status	(7,821,000)	(7,480,000)	(6,938,000)
Net amount recognized	(7,821,000)	(7,480,000)	(6,938,000)
Unrecognized net loss	1,531,000	1,627,000	1,380,000
Net amount recognized	1,531,000	1,627,000	1,380,000
Net loss (gain)	21,000	298,000	(807,000)
Amortization of net loss	(117,000)	(52,000)	(136,000)
Total recognized in other comprehensive income (loss)	(96,000)	246,000	(1,170,000)
Service cost	287,000	219,000	242,000
Prior service costs	0	0	(227,000)
Accumulated other comprehensive loss (net of tax)	2,146,000	1,790,000	1,562,000
Total recognized in other comprehensive income (loss)	$ 356,000	$ 228,000	$ (879,000)