PENSION PLANS - Changes in Benefit Obligations and Reconciliation of Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 25, 2020	Jul. 27, 2019
Changes in Benefit Obligation:
Benefit obligation at beginning of year	$ 69,932	$ 69,553
Service cost	202	213
Interest cost	2,154	2,674
Benefits paid	(887)	(779)
Settlement	(6,733)	(6,331)
Actuarial loss	12,181	4,602
Benefit obligation at end of year	76,849	69,932
Changes in Plan Assets:
Fair value of plan assets at beginning of year	65,173	61,071
Actual return on plan assets	13,130	6,203
Employer contributions	0	5,009
Benefits paid	(887)	(779)
Settlements paid	(6,733)	(6,331)
Fair value of plan assets at end of year	70,683	65,173
Funded status at end of year	6,166	4,759
Amounts recognized in the consolidated balance sheets:
Pension liabilities	6,166	4,759
Accumulated other comprehensive loss, net of income taxes	8,092	8,342
Amounts included in Accumulated other comprehensive loss (pre-tax):
Net actuarial loss	$ 11,299	$ 11,615