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Commitments and Contingencies - Additional Information (Detail)										1 Months Ended		12 Months Ended
	Dec. 29, 2020 USD ($)	Dec. 01, 2020 USD ($)	Nov. 13, 2020 USD ($)	Sep. 29, 2020 USD ($)	Sep. 12, 2018 USD ($)	Sep. 10, 2018 USD ($)	Sep. 07, 2018 USD ($)	Sep. 05, 2018 USD ($)	Mar. 23, 2018 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jan. 02, 2021 USD ($) Lawsuits	Jan. 10, 2020 USD ($)	Dec. 28, 2019 USD ($)	Oct. 28, 2019 USD ($)	Jul. 13, 2019 USD ($)
Loss Contingencies [Line Items]
Self-insurance reserves, current liabilities												$ 29,367,000		$ 30,294,000
Alleged complaints | Lawsuits												19
Legal settlement							$ 9,000,000.0
Legal settlement, amount paid										$ 3,500,000	$ 4,200,000
Remainder of legal settlement funds																$ 1,300,000
Settlement in principle due from insurer												$ 22,300,000	$ 21,000,000.0	$ 22,300,000
Other Current Assets
Loss Contingencies [Line Items]
Settlement in principle due from insurer															$ 1,300,000
Settlement Funds
Loss Contingencies [Line Items]
Legal settlement							5,400,000
Attorneys Fees
Loss Contingencies [Line Items]
Legal settlement							$ 3,600,000
Class and / or Collective action treatment
Loss Contingencies [Line Items]
Alleged complaints | Lawsuits												10
Individual claims or do not seek class or collective action treatment or, in cases class treatment was sought
Loss Contingencies [Line Items]
Alleged complaints | Lawsuits												9
Plaintiffs' motions for class certification
Loss Contingencies [Line Items]
Alleged complaints | Lawsuits												5
Noll Maine
Loss Contingencies [Line Items]
Lawsuit filing date												Dec. 03, 2015
Richard Louisiana
Loss Contingencies [Line Items]
Lawsuit filing date												Oct. 21, 2015
Medrano Mexico
Loss Contingencies [Line Items]
Lawsuit filing date												Apr. 27, 2016
Martins Florida
Loss Contingencies [Line Items]
Lawsuit filing date												Nov. 08, 2016
Caddick - Pennsylvania
Loss Contingencies [Line Items]
Lawsuit filing date		May 15, 2019
Legal settlement		$ 3,150,000
Rosinbaum - NorthCarolina
Loss Contingencies [Line Items]
Lawsuit filing date	Dec. 01, 2015
Legal settlement	$ 8,300,000
Carr - Pennsylvania
Loss Contingencies [Line Items]
Lawsuit filing date				Dec. 01, 2015
Legal settlement				$ 13,250,000
Boulange Pennsylvania
Loss Contingencies [Line Items]
Lawsuit filing date												Mar. 25, 2016
Neff - Vermont
Loss Contingencies [Line Items]
Lawsuit filing date			Dec. 02, 2015
Legal settlement			$ 7,600,000
Preliminary Approval of Class Action | Settlement Funds
Loss Contingencies [Line Items]
Legal settlement									$ 1,200,000
Preliminary Approval of Class Action | Attorneys Fees
Loss Contingencies [Line Items]
Legal settlement									2,900,000
Preliminary Approval of Class Action | Incentive Payments
Loss Contingencies [Line Items]
Legal settlement									$ 200,000
Preliminary Approval of Class Action | Coyle - Arizona
Loss Contingencies [Line Items]
Lawsuit filing date									Jul. 20, 2015
Legal settlement									$ 4,300,000
McCurley - Carolina
Loss Contingencies [Line Items]
Lawsuit filing date												Jan. 20, 2016
Legal settlement						$ 1,500,000
McCurley - Carolina | Settlement Funds
Loss Contingencies [Line Items]
Legal settlement						800,000
McCurley - Carolina | Attorneys Fees
Loss Contingencies [Line Items]
Legal settlement						600,000
McCurley - Carolina | Incentive Payments
Loss Contingencies [Line Items]
Legal settlement						$ 100,000
Zapata - Texas
Loss Contingencies [Line Items]
Lawsuit filing date												Mar. 14, 2016
Legal settlement					$ 740,700
Rodriguez - Texas
Loss Contingencies [Line Items]
Lawsuit filing date												Jan. 28, 2016
Green - Tennessee
Loss Contingencies [Line Items]
Lawsuit filing date												Feb. 01, 2019
Schucker - New York
Loss Contingencies [Line Items]
Lawsuit filing date												May 09, 2016
Legal settlement								$ 1,300,000
Schucker - New York | Settlement Funds
Loss Contingencies [Line Items]
Legal settlement								400,000
Schucker - New York | Attorneys Fees
Loss Contingencies [Line Items]
Legal settlement								900,000
Schucker - New York | Incentive Payments
Loss Contingencies [Line Items]
Legal settlement								$ 100,000

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