Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Income Tax Reconciliation [Abstract]
Income tax provision at federal statutory tax rate	$ 26,020	$ 12,728	$ 14,593
Impact of Partnership income not subject to federal income taxes	(26,444)	(13,045)	(14,925)
Permanent differences	174	127	162
Change in valuation allowance	570	(298)	115
State income taxes	929	403	707
Other	(139)	(61)	205
Provision for income taxes - current and deferred	$ 1,110	$ (146)	$ 857

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

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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 increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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