Note 9 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Provision for income taxes at federal statutory rate	$ 11,959	$ 19,701	$ 11,537
Provision for income taxes at federal statutory rate	35.00%	35.00%	35.00%
Qualified production activities deduction	$ (768)	$ (1,596)	$ (1,005)
Qualified production activities deduction	(2.20%)	(2.80%)	(3.00%)
Valuation allowance	$ (29)	$ (213)	$ (55)
Valuation allowance	(0.10%)	(0.40%)	(0.20%)
State income taxes, net of federal tax benefit	$ 598	$ 1,093	$ 612
State income taxes, net of federal tax benefit	1.80%	1.90%	1.90%
Other, net	$ (140)	$ 60	$ 165
Other, net	(0.50%)	0.10%	0.40%
Provision for income taxes	$ 11,620	$ 19,045	$ 11,254
Provision for income taxes	34.00%	33.80%	34.10%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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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 expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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