Note 10 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Provision for income taxes at federal statutory rate	$ 11,537	$ 8,823	$ 6,299
Provision for income taxes at federal statutory rate	35.00%	35.00%	35.00%
Qualified production activities deduction	$ (1,005)	$ (755)	$ (165)
Qualified production activities deduction	(3.00%)	(3.00%)	(0.90%)
Valuation allowance	$ (55)	$ (183)	$ 51
Valuation allowance	(0.20%)	(0.70%)	0.30%
State income taxes, net of federal tax benefit	$ 612	$ 577	$ 479
State income taxes, net of federal tax benefit	1.90%	2.30%	2.70%
Nondeductible stock option expense	$ 28	$ 30	$ (51)
Nondeductible stock option expense	0.00%	0.10%	(0.30%)
Other, net	$ 137	$ 75	$ (351)
Other, net	0.40%	0.30%	(2.00%)
Provision for income taxes	$ 11,254	$ 8,567	$ 6,262
Provision for income taxes	34.10%	34.00%	34.80%