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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands | Jun. 24, 2016 | Jun. 09, 2016 | Jan. 23, 2015 | Jul. 29, 2017 | Jul. 30, 2016
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Derivatives |  |  |  |  |
Interest Rate Derivative Assets, at Fair Value |  |  |  | $ 2,491 |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  | $ (308) | $ (5,917)
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 | $ 122,500 |  |  |  |

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