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RESTRUCTURING ACTIVITIES AND ASSET IMPAIRMENTS (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 28, 2018 | Apr. 28, 2018 | Jan. 27, 2018 | Apr. 29, 2017 | Apr. 28, 2018 | Apr. 29, 2017 | Jul. 29, 2017
Restructuring Costs Recorded in Fiscal 2016 |  |  |  |  |  |  |
Restructuring and asset impairment |  |  |  |  | $ 3,370 | $ 711 |
Goodwill impairment |  |  |  |  | 7,872 | 0 |
Restructuring Costs [Abstract] |  |  |  |  |  |  |
Restructuring and asset impairment expenses |  | $ 151 |  | $ 3,946 | 11,393 | $ 3,946 |
Earth Origins Market [Member] |  |  |  |  |  |  |
Restructuring Costs Recorded in Fiscal 2016 |  |  |  |  |  |  |
Restructuring and asset impairment |  | 3,300 |  |  |  |  |
Restructuring Costs [Abstract] |  |  |  |  |  |  |
Restructuring and asset impairment expenses |  | 11,400 |  |  |  |  |
2017 Cost Saving and Efficiency Initiatives [Member] |  |  |  |  |  |  |
Restructuring Cost Liability as of April 28, 2018 |  |  |  |  |  |  |
Restructuring Charges |  |  |  |  |  |  | $ 6,864
Payments for Restructuring |  |  |  |  | (5,988) |  |
Restructuring Reserve |  | 876 |  |  | 876 |  |
Restructuring Reserve, Accrual Adjustment |  | 151 | $ (182) |  |  |  |
Employee Severance [Member] | 2017 Cost Saving and Efficiency Initiatives [Member] |  |  |  |  |  |  |
Restructuring Cost Liability as of April 28, 2018 |  |  |  |  |  |  |
Restructuring Charges |  |  |  |  |  |  | 6,606
Payments for Restructuring |  |  |  |  | (5,730) |  |
Restructuring Reserve |  | 876 |  |  | 876 |  |
Employee Severance [Member] | Earth Origins Market |  |  |  |  |  |  |
Restructuring Cost Liability as of April 28, 2018 |  |  |  |  |  |  |
Restructuring Charges |  |  |  |  | 245 |  |
Payments for Restructuring |  |  |  |  | (17) |  |
Restructuring Reserve |  | 228 |  |  | 228 |  |
Facility Closing [Member] | 2017 Cost Saving and Efficiency Initiatives [Member] |  |  |  |  |  |  |
Restructuring Cost Liability as of April 28, 2018 |  |  |  |  |  |  |
Restructuring Charges |  |  |  |  |  |  | $ 258
Payments for Restructuring |  |  |  |  | (258) |  |
Restructuring Reserve |  | $ 0 |  |  | $ 0 |  |
Maximum |  |  |  |  |  |  |
Restructuring Cost Liability as of April 28, 2018 |  |  |  |  |  |  |
Restructuring Charges | $ 1,400 |  |  |  |  |  |

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