Revenue (Schedule Of Disaggregated Revenue By Product Group) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 26, 2022	Mar. 27, 2021	Mar. 28, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 1,359,328	$ 1,125,721	$ 1,256,524
Tires [Member]
Disaggregation of Revenue [Line Items]
Revenues	716,325	617,815	634,513
Maintenance [Member]
Disaggregation of Revenue [Line Items]
Revenues	330,732	269,337	324,494
Brakes [Member]
Disaggregation of Revenue [Line Items]
Revenues	174,854	130,179	169,138
Steering [Member]
Disaggregation of Revenue [Line Items]
Revenues	109,793	85,290	100,230
Exhaust [Member]
Disaggregation of Revenue [Line Items]
Revenues	24,398	20,201	25,058
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 3,226	$ 2,899	$ 3,091