Note 10 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Provision for income taxes at federal statutory rate	$ 19,701	$ 11,537	$ 8,823
Provision for income taxes at federal statutory rate	35.00%	35.00%	35.00%
Qualified production activities deduction	$ (1,596)	$ (1,005)	$ (755)
Qualified production activities deduction	(2.80%)	(3.00%)	(3.00%)
Valuation allowance	$ (213)	$ (55)	$ (183)
Valuation allowance	(0.40%)	(0.20%)	(0.70%)
State income taxes, net of federal tax benefit	$ 1,093	$ 612	$ 577
State income taxes, net of federal tax benefit	1.90%	1.90%	2.30%
Other, net	$ 60	$ 165	$ 105
Other, net	0.10%	0.40%	0.40%
Provision for income taxes	$ 19,045	$ 11,254	$ 8,567
Provision for income taxes	33.80%	34.10%	34.00%

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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