Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 15, 2018	Apr. 16, 2017	Apr. 15, 2018	Apr. 16, 2017
Income Tax Disclosure [Abstract]
Income tax expense at statutory rate, amount		$ 10,717	$ 19,221	$ 28,037	$ 40,961
Income tax expense at statutory rate		29.40%	37.90%	29.10%	38.20%
Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit)		$ 577	$ 0	$ 31,204	$ 0
One-time, non-cash impact of the Tax Act, percent		1.60%	0.00%	32.40%	0.00%
Stock compensation excess tax benefit, amount		$ (14)	$ 0	$ (816)	$ 0
Stock compensation excess tax benefit, percent		0.00%	0.00%	(0.90%)	0.00%
Other, amount		$ 146	$ 112	$ 139	$ 203
Other, percent		0.40%	0.20%	0.10%	0.20%
Effective income tax rate, amount		$ 11,426	$ 19,333	$ 58,564	$ 41,164
Effective income tax rates, percent	[1]	31.40%	38.10%	60.70%	38.40%

[1] (1)Percentages may not add due to rounding.