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EARNINGS PER SHARE (Details) - $ / shares shares in Thousands		3 Months Ended		6 Months Ended
		Jan. 26, 2019	Jan. 27, 2018	Jan. 26, 2019	Jan. 27, 2018
Reconciliation of the basic and diluted number of shares used in computing earnings per share:
Basic weighted average shares outstanding (shares)		50,815	50,449	50,699	50,633
Net effect of dilutive stock awards based upon the treasury stock method (in shares)	[1]	0	292	0	216
Diluted weighted average shares outstanding (in shares)	[1]	50,815	50,741	50,699	50,849
Basic per share data:
Continuing operations (usd per share)		$ (7.15)	$ 1.00	$ (7.59)	$ 1.60
Discontinued operations (usd per share)	[1]	0.42	0.00	0.46	0.00
Basic (loss) earnings per share (usd per share)		(6.72)	1.00	(7.12)	1.60
Diluted per share data:
Continuing operations (usd per share)		(7.15)	0.99	(7.59)	1.59
Discontinued operations (usd per share)	[1]	0.42	0.00	0.46	0.00
Diluted (loss) earnings per share (usd per share)		$ (6.72)	$ 0.99	$ (7.12)	$ 1.59
Anti-dilutive stock-based awards excluded from the calculation of diluted (loss) earnings per share (in shares)		4,094	293	1,969	582
Shares attributable to dilutive effect of stock awards		107		353
[1] The computation of diluted earnings per share from discontinued operations is calculated using diluted weighted average shares outstanding which includes the net effect of dilutive stock awards, or approximately 107 thousand shares for the 13-week period ended January 26, 2019 and 353 thousand shares for the 26-week period ended January 26, 2019.

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