Income Taxes - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 30, 2014	Dec. 30, 2020	Dec. 25, 2019	Dec. 26, 2018	Jan. 02, 2018	Jan. 06, 2015
Investments, Owned, Federal Income Tax Note [Line Items]
Increase in valuation allowance		$ 100	$ 900	$ 5,100
Valuation allowance		6,127	5,993
Percentage of cash savings in taxes realized as a result of utilizing net operating losses payable to pre-IPO stockholders	85.00%
TRA tax expense (benefit)		100	100	(800)	$ (5,600)	$ 41,400
AMT Credits, CARES Act		400
Payments to pre-IPO stockholders under TRA		5,237	5,764	$ 7,272
Deferred tax asset credit		8,579	10,442
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		0
Unrecognized Tax Benefits, Income Tax Penalties Accrued		0	0
Federal
Investments, Owned, Federal Income Tax Note [Line Items]
Net operating loss carryforwards		0
State and Local Jurisdiction
Investments, Owned, Federal Income Tax Note [Line Items]
Net operating loss carryforwards		100
Enterprise Zone
Investments, Owned, Federal Income Tax Note [Line Items]
Tax credits carry forward		10,200
WOTC
Investments, Owned, Federal Income Tax Note [Line Items]
Tax credits carry forward		500
California | Enterprise Zone
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred tax asset credit		$ 2,500	$ 3,300