Acquisitions (Narrative) (Details) $ in Thousands													12 Months Ended
	May. 01, 2016 store property	Jan. 31, 2016 store	Dec. 13, 2015 store	Aug. 16, 2015 store	Jul. 12, 2015 store	Apr. 25, 2015 store item	Mar. 01, 2015 store	Dec. 07, 2014 store	Sep. 28, 2014 store	Aug. 08, 2014 store	Jun. 15, 2014 store	Apr. 13, 2014 store	Mar. 26, 2016 USD ($) store item	Mar. 28, 2015 USD ($) agreement store
Business Acquisition [Line Items]
Number of stores never opened | store											2
Total consideration transferred, portion in cash													$ 45,100
Total consideration transferred, portion payable													6,000
Change in estimates, property, plant and equipment													4,100
Change in estimates, intangible assets													600
Change in estimates, other current assets													400
Change in estimates, long-term deferred income tax assets													2,300
Change in estimates, current potion of capital leases and financing obligations													800
Change in estimates, long-term capital leases and financing obligations													9,500
Change in estimates, other liabilities													(200)
Adjustments to goodwill related to purchase accounting													$ 4,326	$ (267)
Subsequent Event [Member]
Business Acquisition [Line Items]
Number of stores acquired | store	29
Number of plants acquired | property	1
Former Car-X Franchised Stores Acquisitions [Member]
Business Acquisition [Line Items]
Number of stores acquired | store													3
Number of franchisees | item													2
Marietta Tire & Service, Inc. Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store		1
McMar, Inc. Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store			4
Host Tires of Lakeland, Inc. Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store			1
Kost Tire [Member]
Business Acquisition [Line Items]
Number of stores acquired | store				27
Windsor Tire Co. Aquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store					4
Car-X Associates Corp. Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store						146
Number of franchisees | item						32
Hennelly Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store										35
Lentz Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store											10
Kan Rock Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store											9
Bald Tire Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store												2
Wood & Fullerton Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store									9
Martino Tire Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store							8
Gold Coast Acquisition [Member]
Business Acquisition [Line Items]
Number of stores acquired | store								9
Fiscal 2015 Acquisitions [Member]
Business Acquisition [Line Items]
Costs related to acquisitions													$ 1,100
Sales for acquired entities													52,200
Net income for acquired entities													500
Total consideration transferred														$ 87,451
Fiscal 2016 Aquisitions [Member]
Business Acquisition [Line Items]
Costs related to acquisitions													700
Sales for acquired entities													24,800
Net income for acquired entities													1,400
Total consideration transferred													$ 51,104
New York, Georgia, and New Jersey [Member]
Business Acquisition [Line Items]
Number of stores acquired | store														5
Number of separate transactions | agreement														5