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Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 1,955,363	$ 2,246,947	$ 2,257,895
Workplace Furnishings
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	1,365,711	1,697,186	1,706,092
Workplace Furnishings | Systems and storage
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	741,183	951,965	1,015,900
Workplace Furnishings | Seating
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	489,342	583,245	598,722
Workplace Furnishings | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	135,186	161,976	91,470
Residential building products
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 589,652	$ 549,761	$ 551,803

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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