Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 2,184,408	$ 1,955,363	$ 2,246,947
Workplace Furnishings
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	1,433,985	1,365,711	1,697,186
Workplace Furnishings | Systems and storage
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	833,220	741,183	951,965
Workplace Furnishings | Seating
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	481,739	489,342	583,245
Workplace Furnishings | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	119,026	135,186	161,976
Residential building products
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 750,423	$ 589,652	$ 549,761