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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 24, 2016 | Jun. 09, 2016 | Jan. 23, 2015 | Jul. 28, 2018 | Jul. 29, 2017 | Jul. 30, 2016
Derivatives |  |  |  |  |  |
Interest expense |  |  |  | $ 16,471 | $ 17,114 | $ 16,259
Interest Rate Derivative Assets, at Fair Value |  |  |  |  | 2,491 |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  | 0 | $ (308) |
June 9, 2019 |  |  |  |  |  |
Derivatives |  |  |  |  |  |
Derivative, Maturity Date |  | Jun. 09, 2019 |  |  |  |
Derivative, Forward Interest Rate |  | 0.8725% |  |  |  |
Derivative, Notional Amount |  | $ 50,000 |  |  |  |
June 24, 2019 |  |  |  |  |  |
Derivatives |  |  |  |  |  |
Derivative, Maturity Date | Jun. 24, 2019 |  |  |  |  |
Derivative, Forward Interest Rate | 0.7265% |  |  |  |  |
Derivative, Notional Amount | $ 50,000 |  |  |  |  |
April 29, 2021 |  |  |  |  |  |
Derivatives |  |  |  |  |  |
Derivative, Maturity Date |  | Apr. 29, 2021 |  |  |  |
Derivative, Forward Interest Rate |  | 1.065% |  |  |  |
Derivative, Notional Amount |  | $ 25,000 |  |  |  |
April 29, 2021 |  |  |  |  |  |
Derivatives |  |  |  |  |  |
Derivative, Maturity Date | Apr. 29, 2021 |  |  |  |  |
Derivative, Forward Interest Rate | 0.926% |  |  |  |  |
Derivative, Notional Amount | $ 25,000 |  |  |  |  |
August 3, 2022 |  |  |  |  |  |
Derivatives |  |  |  |  |  |
Derivative, Maturity Date |  |  | Aug. 03, 2022 |  |  |
Derivative, Forward Interest Rate |  |  | 1.795% |  |  |
Derivative, Notional Amount | $ 112,500 |  |  |  |  |
Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |  |
Derivatives |  |  |  |  |  |
Interest Rate Derivative Assets, at Fair Value |  |  |  | 1,459 |  |
Other Assets [Member] |  |  |  |  |  |
Derivatives |  |  |  |  |  |
Interest Rate Derivative Assets, at Fair Value |  |  |  | $ 5,860 |  |

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