DISCONTINUED OPERATIONS - Balance Sheets (Details) - USD ($) $ in Thousands	Apr. 27, 2019	Jul. 28, 2018
Current assets:
Cash and cash equivalents	$ 3,019
Receivables, net	2,182
Inventories	136,713
Other current assets	5,607
Total current assets of discontinued operations	147,521	$ 0
Long-term assets [Abstract]
Property, plant and equipment	337,591
Intangible assets	53,486
Other assets	2,067
Total long-term assets of discontinued operations	393,143	0
Total assets of discontinued operations	540,664
Current liabilities:
Accounts payable	55,261
Accrued compensation and benefits	39,497
Other current liabilities	21,352
Total current liabilities of discontinued operations	116,110	0
Liabilities, Noncurrent [Abstract]
Other long-term liabilities	935
Total long-term liabilities of discontinued operations	935	$ 0
Total liabilities of discontinued operations	117,045
Net assets of discontinued operations	$ 423,619