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Leases - Narrative (Details)
 3 Months Ended 12 Months Ended
Sep. 24, 2022
USD ($)
Sep. 24, 2022
USD ($)
Sep. 25, 2021
USD ($)
Sep. 26, 2020
USD ($)
Lessee, Lease, Description [Line Items]        
Period with option to terminate lease   1 year    
Extension period   10 years    
Weighted average discount rate   0.0197    
Finance lease liabilities (current) $ 3,200,000 $ 3,200,000 $ 3,700,000  
Finance lease liabilities (non-current) $ 18,000,000.0 18,000,000.0 22,800,000  
Lease revenue as a percentage of total 0.03      
Right-of-use asset obtained in exchange for finance lease liability   0 9,100  
Lease receivable     15,200,000  
Operating lease, right-of-use assets $ 68,900,000 68,900,000 83,600,000  
Present value of lease liabilities 77,000.0 77,000.0    
Present value of lease liabilities $ 21,200 21,200    
ROU assets arising from entering into new operating lease obligations   16,600 28,600  
Sublease Income   $ 2,800,000 $ 2,600,000 $ 2,000,000
Cynosure        
Lessee, Lease, Description [Line Items]        
Right-of-use asset obtained in exchange for finance lease liability       $ 10,200,000
Minimum        
Lessee, Lease, Description [Line Items]        
Lessee, operating and finance lease, remaining lease term   1 year    
Maximum        
Lessee, Lease, Description [Line Items]        
Lessee, operating and finance lease, remaining lease term   13 years