Acquisitions (Details) (USD $)	3 Months Ended	9 Months Ended		9 Months Ended
	Dec. 29, 2012	Dec. 29, 2012	Dec. 28, 2013	Dec. 29, 2012 Kramer Acquisition numberofstores	Dec. 29, 2012 Colony Acquisition numberofstores	Dec. 29, 2012 Tuffy Acquisition numberofstores	Dec. 29, 2012 Brothers Acquisition numberofstores	Dec. 29, 2012 Chesley Acquisition numberofstores	Dec. 29, 2012 Everybody's Oil Acquisition numberofstores	Dec. 29, 2012 Towery Acquisition numberofstores numberofwarehouses	Dec. 28, 2013 Curry Acquisition numberofstores	Dec. 29, 2012 Delaware and Maryland Stores Acquisitions [Member] numberofstores	Dec. 29, 2012 Kentucky Stores Acquisition [Member] numberofstores	Dec. 29, 2012 Third Quarter Fiscal 2014 Acquisitions [Member] numberofsellers
Business Acquisition [Line Items]
Number of stores acquired				20	18	17	1	5	31	27	10	6	4
Number of sellers														2
Number of wholesale operations acquired										1
Number of warehouses acquired										1
Property, plant and equipment, purchase price adjustment	$ 4,200,000	$ 4,200,000
Intangible assets, purchase price adjustment	3,900,000	3,900,000
Long-term deferred income tax asset, purchase price adjustment	7,400,000	7,400,000
Current portion of long-term debt, capital leases and financing obligations, purchase price adjustment	1,900,000	1,900,000
Warranty reserves, purchase price adjustment	(200,000)	(200,000)
Long-term capital leases and financing obligations, purchase price adjustment	28,100,000	28,100,000
Other long-term liabilities, purchase price adjustment	200,000	200,000
Goodwill, purchase price adjustment	14,500,000	14,500,000
Schedule Of Business Acquisitions Purchase Price Allocation [Line Items]
Inventories	16,645,000	16,645,000
Other current assets	1,214,000	1,214,000
Property, plant and equipment	38,531,000	38,531,000
Intangible assets	19,920,000	19,920,000
Long-term deferred income tax asset	13,030,000	13,030,000
Total assets acquired	89,340,000	89,340,000	12,184,000
Warranty reserves	3,166,000	3,166,000
Other current liabilities	4,338,000	4,338,000
Long-term capital leases and financing obligations	43,218,000	43,218,000
Other long-term liabilities	4,096,000	4,096,000
Total liabilities assumed	54,818,000	54,818,000	2,303,000
Total net identifiable assets acquied	34,522,000	34,522,000
Total consideration transferred	144,715,000	144,715,000	26,334,000
Less: total net identifiable assets acquired	34,522,000	34,522,000
Goodwill		110,193,000
Total costs related to acquisitions	600,000	1,300,000
Sales for the fiscal 2013 acquired entities	$ 21,700,000	$ 42,800,000