Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended	12 Months Ended
	Dec. 27, 2020 USD ($) segment	Dec. 27, 2020 USD ($) segment	Dec. 29, 2019 USD ($)	Dec. 30, 2018 USD ($)	Jan. 01, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment	2	2
Number of reportable segments | segment	2	2
Foreign currency transaction gains and (losses)		$ (300,000)	$ (200,000)	$ 400,000
Book overdrafts	$ 0	0	33,600,000
Accrued medical benefits and workers' compensation expense	6,600,000	6,600,000	7,200,000
Accrued automobile and general liability expense	$ 1,300,000	$ 1,300,000	$ 1,200,000
Cumulative effect adjustment for adoption of ASC, net of tax				$ (1,100,000)	$ 3,000,000.0
Term for access to auction		1 year
Auction Sales | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Performance obligation satisfaction	1 year	1 year
Accounting Standards Update 2014-09 | Retained Earnings (Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment for adoption of ASC, net of tax					$ 3,000,000.0