Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Income Tax Disclosure [Abstract]
Tax Credit Carryforward, Amount	$ 6,200,000	$ 5,700,000
Deferred Tax Assets, Valuation Allowance	0	0
Current tax expense
Federal	128,490,000	123,388,000	$ 207,986,000
State	25,091,000	15,597,000	14,516,000
Total current	153,581,000	138,985,000	222,502,000
Deferred tax expense (benefit)
Deferred Federal Income Tax Expense (Benefit)	11,770,000	9,650,000	22,469,000
Deferred State and Local Income Tax Expense (Benefit)	(4,328,000)	2,393,000	4,953,000
Deferred income tax expense (benefit), net of tax expense of interest rate swap	7,442,000	12,043,000	27,422,000
Total income tax expense	161,023,000	151,028,000	249,924,000
Tax assets
Inventory valuation	16,676,000	14,417,000
Accrued employee benefits costs	12,002,000	15,333,000
Accrued sales tax audit reserve	4,173,000	3,419,000
Rent expenses in excess of cash payments required	30,975,000	25,628,000
Deferred compensation	14,836,000	17,598,000
Workers’ compensation insurance	10,154,000	9,900,000
General liability insurance	6,025,000	5,410,000
Lease exit obligations	2,087,000	2,010,000
Income tax credits	6,377,000	5,773,000
Other	5,768,000	9,160,000
Total non current deferred tax asset	109,073,000	108,648,000
Tax liabilities
Inventory basis differences	(4,667,000)	(4,590,000)
Prepaid Expenses	(2,024,000)	(1,912,000)
Depreciation	(93,919,000)	(87,417,000)
Amortization	(8,230,000)	(6,039,000)
Other	(386,000)	(2,083,000)
Total non current deferred tax liabilities	(109,226,000)	(102,041,000)
Net deferred tax asset		6,607,000
Provision for income tax reconciliation to amounts computed at the federal statutory rate
Tax provision at statutory rate	151,909,000	143,511,000	235,383,000
State income taxes, net of federal tax benefits	19,722,000	18,019,000	14,320,000
Tax Adjustments, Settlements, and Unusual Provisions	2,572,000	2,581,000	1,223,000
Tax credits, net of federal tax benefits	(7,768,000)	(7,140,000)	(5,060,000)
Share-based compensation programs	(4,484,000)	(4,522,000)	(1,040,000)
Enactment of tax legislation	0	0	4,856,000
Other	(928,000)	1,421,000	(242,000)
Total income tax expense	161,023,000	151,028,000	249,924,000
Unrecognized tax benefits that would Impact effective tax rate	2,300,000
Reconciliation of gross unrecognized tax benefits
Balance at beginning of period	2,451,000	1,993,000	1,579,000
Additions based on tax positions related to the current year	650,000	621,000	527,000
Additions for tax positions of prior years	59,000	257,000	14,000
Reductions for tax positions of prior years	(400,000)	(420,000)	(127,000)
Balance at end of year	2,760,000	$ 2,451,000	$ 1,993,000
Deferred Tax Liabilities, Net	$ 153,000