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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 02, 2021
Sep. 26, 2020
Oct. 02, 2021
Sep. 26, 2020
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 586,750 $ 507,063 $ 1,581,498 $ 1,393,224
Workplace furnishings        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 393,141 353,361 1,040,026 999,827
Workplace furnishings | Systems and storage        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 227,827 207,549 611,097 578,601
Workplace furnishings | Seating        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 134,248 127,294 349,572 358,005
Workplace furnishings | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 31,066 18,518 79,357 63,221
Residential building products        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 193,609 $ 153,702 $ 541,472 $ 393,397