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PENSION PLANS - Fair Value of Pension Assets (Details) - USD ($) $ in Thousands | Jul. 28, 2018 | Jul. 29, 2017
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Cash | $ 17 | $ 776
Equity Securities [Abstract] |  |
Company stock | 611 | 636
Mutual/Collective Trust Funds - U.S. | 10,213 | 0
Mutual/Collective Trust Funds - International | 8,337 | 0
U.S large cap | 0 | 20,893
U.S. small/mid cap | 0 | 6,823
International | 0 | 7,608
Emerging markets | 0 | 1,277
Fixed Income Securities [Abstract] |  |
Mutual/Collective Trust Funds - Fixed Income | 41,893 | 0
U.S treasuries | 0 | 9,876
Mortgage-backed | 0 | 1,889
Corporate bonds | 0 | 6,110
International | 0 | 619
Total | 61,071 | 56,507
Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Cash | 17 | 166
Equity Securities [Abstract] |  |
Company stock | 611 | 636
Mutual/Collective Trust Funds - U.S. | 0 | 0
Mutual/Collective Trust Funds - International | 0 | 0
U.S large cap | 0 | 19,696
U.S. small/mid cap | 0 | 6,644
International | 0 | 7,187
Emerging markets | 0 | 1,277
Fixed Income Securities [Abstract] |  |
Mutual/Collective Trust Funds - Fixed Income | 0 | 0
U.S treasuries | 0 | 9,520
Mortgage-backed | 0 | 1,783
Corporate bonds | 0 | 2,931
International | 0 | 619
Total | 628 | 50,459
FairValueMeasuredAtNetAssetValuePerShareMember [Domain] |  |
Equity Securities [Abstract] |  |
Mutual/Collective Trust Funds - U.S. | 10,213 |
Mutual/Collective Trust Funds - International | 8,337 |
Fixed Income Securities [Abstract] |  |
Mutual/Collective Trust Funds - Fixed Income | 41,893 |
Total | 60,443 |
Assets Measured at NAV/Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Cash | 0 | 610
Equity Securities [Abstract] |  |
Company stock | 0 | 0
Mutual/Collective Trust Funds - U.S. |  | 0
Mutual/Collective Trust Funds - International |  | 0
U.S large cap | 0 | 1,197
U.S. small/mid cap | 0 | 179
International | 0 | 421
Emerging markets | 0 | 0
Fixed Income Securities [Abstract] |  |
Mutual/Collective Trust Funds - Fixed Income |  | 0
U.S treasuries | 0 | 356
Mortgage-backed | 0 | 106
Corporate bonds | 0 | 3,179
International | $ 0 | 0
Total |  | $ 6,048

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- Definition The amount of employer securities or securities of parties related to the employer that are included in plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (n) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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