Note 11 - Employee Benefit Plans - Projected Benefit Obligation Reconciliation (Details) - USD ($)	12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Pension Plan [Member] | Change in Benefit Obligation [Member]
Distributions	$ (4,224,000)	$ (259,000)	$ (206,000)
Pension Plan [Member] | Change in Plan Assets [Member]
Distributions	(221,000)	(259,000)	(210,000)
Pension Plan [Member]
Benefit obligation	3,463,000	3,078,000	2,973,000
Interest cost	147,000	130,000	137,000
Actuarial loss	324,000	514,000	174,000
Plan settlement	290,000
Benefit obligation		3,463,000	3,078,000
Fair value of plan assets	2,201,000	2,253,000	2,045,000
Actual return on plan assets	104,000	(27,000)	178,000
Defined Benefit Plan, Contributions by Employer	1,919,000	234,000	240,000
Plan settlement	(4,003,000)
Fair value of plan assets		2,201,000	2,253,000
Funded status		(1,263,000)	(825,000)
Accrued benefit liability		(1,263,000)	(825,000)
Accumulated other comprehensive loss (net of tax)		1,197,000	782,000
Net amount recognized		(66,000)	(43,000)
Unrecognized net loss		1,930,000	1,261,000
Net amount recognized		1,930,000	1,261,000
Net loss	685,000	723,000	165,000
Amortization of net loss	(76,000)	(53,000)	(43,000)
Settlement loss	(2,539,000)
Total recognized in other comprehensive income (loss)	(1,930,000)	670,000	122,000
Supplemental Employee Retirement Plan [Member]
Benefit obligation	7,821,000	7,480,000	6,938,000
Interest cost	326,000	323,000	315,000
Actuarial loss	1,039,000	21,000	298,000
Distributions	(290,000)	(290,000)	(290,000)
Benefit obligation	9,159,000	7,821,000	7,480,000
Fair value of plan assets	0	0
Defined Benefit Plan, Contributions by Employer	290,000	290,000	290,000
Fair value of plan assets	0	0	0
Funded status	(9,159,000)	(7,821,000)	(7,480,000)
Unrecognized net loss	2,485,000	1,531,000	1,627,000
Net amount recognized	2,485,000	1,531,000	1,627,000
Service cost	263,000	287,000	219,000
Net loss	1,039,000	21,000	298,000
Amortization of net loss	(85,000)	(117,000)	(52,000)
Total recognized in other comprehensive income (loss)	954,000	$ (96,000)	$ 246,000
Net loss	$ 1,197,000