Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Income Taxes [Line Items]
Interest and penalties included in provision for incomes taxes	$ 0.0	$ 0.0	$ 0.0
Accrued interest and penalties	0.2	0.2
Unrecognized tax benefits that would impact the effective tax rate if recognized	0.2	$ 0.8
Deferred tax assets capital loss carryforward	$ 0.9
State and Local Jurisdiction
Income Taxes [Line Items]
Income tax return examination	As of December 25, 2021, the Company’s 2018, 2019, and 2020 federal income tax returns remain subject to examination by IRS. The Company’s state income tax returns remain subject to examination for three or four years depending on the state’s statute of limitations.
State and Local Jurisdiction | Minimum
Income Taxes [Line Items]
Income tax return examination period	3 years
State and Local Jurisdiction | Maximum
Income Taxes [Line Items]
Income tax return examination period	4 years