Revenues (Schedule Of Disaggregated Revenue By Product Group) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 25, 2021	Dec. 26, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 341,781	$ 284,591	$ 1,031,298	$ 820,237
Tires [Member]
Disaggregation of Revenue [Line Items]
Revenues	190,086	162,442	544,395	454,217
Maintenance [Member]
Disaggregation of Revenue [Line Items]
Revenues	78,363	65,648	248,793	193,754
Brakes [Member]
Disaggregation of Revenue [Line Items]
Revenues	41,556	29,962	135,704	94,015
Steering [Member]
Disaggregation of Revenue [Line Items]
Revenues	25,894	20,464	82,246	60,497
Exhaust [Member]
Disaggregation of Revenue [Line Items]
Revenues	5,107	5,391	17,477	15,533
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 775	$ 684	$ 2,683	$ 2,221