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Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Jan. 01, 2022
Goodwill [Roll Forward]      
Goodwill, gross beginning balance $ 371,100 $ 376,100  
Accumulated impairment losses, beginning balance (65,200) (78,800)  
Goodwill, net beginning balance 305,900 297,300  
Goodwill acquired / measurement period adjustments 162,700 (5,000)  
Accumulated impairment losses disposed 14,100 13,600  
Impairment losses (27,600)   $ (5,800)
Goodwill disposed (14,100)    
Goodwill, gross ending balance 519,600 371,100 376,100
Accumulated impairment losses, ending balance (78,600) (65,200) (78,800)
Goodwill, net ending balance 441,000 305,900 297,300
Workplace Furnishings      
Goodwill [Roll Forward]      
Goodwill, gross beginning balance 148,700 162,300  
Accumulated impairment losses, beginning balance (65,000) (78,600)  
Goodwill, net beginning balance 83,600 83,600  
Goodwill acquired / measurement period adjustments 162,700 (13,600)  
Accumulated impairment losses disposed 14,100 13,600  
Impairment losses (27,600)    
Goodwill disposed (14,100)    
Goodwill, gross ending balance 297,200 148,700 162,300
Accumulated impairment losses, ending balance (78,500) (65,000) (78,600)
Goodwill, net ending balance 218,700 83,600 83,600
Residential Building Products      
Goodwill [Roll Forward]      
Goodwill, gross beginning balance 222,400 213,800  
Accumulated impairment losses, beginning balance (100) (100)  
Goodwill, net beginning balance 222,300 213,700  
Goodwill acquired / measurement period adjustments 0 8,600  
Accumulated impairment losses disposed 0 0  
Impairment losses 0    
Goodwill disposed 0    
Goodwill, gross ending balance 222,400 222,400 213,800
Accumulated impairment losses, ending balance (100) (100) (100)
Goodwill, net ending balance $ 222,300 $ 222,300 $ 213,700