PENSION PLANS - Changes in Benefit Obligations and Reconciliation of Funded Status (Details) - USD ($)	12 Months Ended
	Jul. 30, 2016	Jul. 25, 2015	Jul. 26, 2014
Compensation Related Costs [Abstract]
Defined Benefit Plan, Curtailments	$ 17,904,000	$ 0
Changes in Benefit Obligation:
Benefit obligation at beginning of year	83,961,000	77,090,000
Service cost	3,099,000	3,642,000	$ 2,926,000
Interest cost on projected benefit obligation	3,031,000	3,055,000	2,775,000
Benefits paid	(3,440,000)	(3,769,000)
Settlement	0	(3,033,000)
Actuarial loss	11,274,000	6,976,000
Benefit obligation at end of year	80,021,000	83,961,000	77,090,000
Changes in Plan Assets:
Fair value of plan assets at beginning of year	51,729,000	50,129,000
Actual return on plan assets	1,468,000	2,279,000
Employer contributions	3,524,000	6,203,000
Benefits paid	(3,440,000)	(3,769,000)
Settlements paid	0	(3,113,000)
Fair value of plan assets at end of year	53,281,000	51,729,000	$ 50,129,000
Funded status at end of year	(26,740,000)	(32,232,000)
Amounts recognized in the consolidated balance sheets:
Pension liabilities	(26,740,000)	(32,232,000)
Accumulated other comprehensive loss, net of income taxes	13,339,000	16,874,000
Amounts included in Accumulated other comprehensive loss (pre-tax):
Net actuarial loss	$ 22,502,000	$ 28,459,000