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SIGNIFICANT ACCOUNTING POLICIES (Details 4) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jul. 29, 2017 | Jul. 30, 2016 | Aug. 01, 2015
Amortizing intangible assets: |  |  |
Gross Carrying Amount | $ 202,452 | $ 200,913 |
Accumulated Amortization | 49,926 | 34,315 |
Net | 152,526 | 166,598 |
Total intangible assets |  |  |
Intangible assets, gross | 258,215 | 256,629 |
Intangible assets, net | 208,289 | 222,314 |
Amortization expense | 15,200 | 8,900 | $ 7,800
Estimated future amortization expense on finite lived intangible assets |  |  |
2014 | 14,981 |  |
2015 | 14,440 |  |
2016 | 13,813 |  |
2017 | 12,908 |  |
2018 | 11,582 |  |
2023 and thereafter | 84,802 |  |
Net | 152,526 | 166,598 |
Customer relationships |  |  |
Amortizing intangible assets: |  |  |
Gross Carrying Amount | 197,852 | 196,313 |
Accumulated Amortization | 48,044 | 33,447 |
Net | 149,808 | 162,866 |
Estimated future amortization expense on finite lived intangible assets |  |  |
Net | 149,808 | 162,866 |
Non-compete agreements |  |  |
Amortizing intangible assets: |  |  |
Gross Carrying Amount | 2,900 | 2,900 |
Accumulated Amortization | 1,334 | 753 |
Net | 1,566 | 2,147 |
Estimated future amortization expense on finite lived intangible assets |  |  |
Net | 1,566 | 2,147 |
Trademarks and tradenames |  |  |
Amortizing intangible assets: |  |  |
Gross Carrying Amount | 1,700 | 1,700 |
Accumulated Amortization | 548 | 115 |
Net | 1,152 | 1,585 |
Indefinite lived intangible assets: |  |  |
Indefinite lived intangible assets | 55,763 | 55,716 |
Indefinite-Lived Intangible assets, accumulated amortization | 0 | 0 |
Estimated future amortization expense on finite lived intangible assets |  |  |
Net | $ 1,152 | $ 1,585 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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