SIGNIFICANT ACCOUNTING POLICIES (Details 4) (USD $)	12 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Jul. 28, 2012
Amortizing intangible assets:
Gross Carrying Amount	$ 100,406,000	$ 35,475,000
Accumulated Amortization	19,002,000	14,214,000
Net	81,404,000	21,261,000
Total intangible assets
Intangible assets, gross	153,991,000	63,754,000
Intangible assets, net	134,989,000	49,540,000
Amortization expense	5,100,000	4,100,000	3,300,000
Estimated future amortization expense on finite lived intangible assets
2014	7,880,000
2015	6,755,000
2016	6,525,000
2017	5,836,000
2018	5,821,000
2020 and thereafter	48,587,000
Net	81,404,000	21,261,000
Customer relationships
Amortizing intangible assets:
Gross Carrying Amount	98,928,000	34,704,000
Accumulated Amortization	18,901,000	14,136,000
Net	80,027,000	20,568,000
Estimated future amortization expense on finite lived intangible assets
Net	80,027,000	20,568,000
Noncompete Agreements
Amortizing intangible assets:
Gross Carrying Amount	800,000	0
Accumulated Amortization	13,000	0
Net	787,000	0
Estimated future amortization expense on finite lived intangible assets
Net	787,000	0
Trademarks and tradenames
Amortizing intangible assets:
Gross Carrying Amount	678,000	771,000
Accumulated Amortization	88,000	78,000
Net	590,000	693,000
Indefinite lived intangible assets:
Indefinite lived intangible assets	53,585,000	28,279,000
Estimated future amortization expense on finite lived intangible assets
Net	$ 590,000	$ 693,000