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Acquisitions (Schedule Of Intangible Assets Acquired) (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Customer Lists [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 1,523  
Weighted average useful life 7 years  
Fiscal 2019 Acquisitions [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   $ 6,812
Weighted average useful life 12 years  
Fiscal 2019 Acquisitions [Member] | Customer Lists [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   5,247
Weighted average useful life 13 years  
Fiscal 2019 Acquisitions [Member] | Favorable Leases [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   1,165
Weighted average useful life 10 years  
Fiscal 2019 Acquisitions [Member] | Trade Names [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   $ 400
Weighted average useful life 2 years