PENSION PLANS - Changes in Benefit Obligations and Reconciliation of Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 28, 2018	Jul. 29, 2017
Changes in Benefit Obligation:
Benefit obligation at beginning of year	$ 71,701	$ 80,021
Service cost	259	388
Interest cost	2,515	2,424
Benefits paid	(643)	(549)
Settlement	(4,317)	(4,487)
Actuarial loss (gain)	38	(6,096)
Benefit obligation at end of year	69,553	71,701
Changes in Plan Assets:
Fair value of plan assets at beginning of year	56,507	53,281
Actual return on plan assets	3,014	5,262
Employer contributions	6,510	3,000
Benefits paid	(643)	(549)
Settlements paid	(4,317)	(4,487)
Fair value of plan assets at end of year	61,071	56,507
Funded status at end of year	8,482	15,194
Amounts recognized in the consolidated balance sheets:
Pension liabilities	8,482	15,194
Accumulated other comprehensive loss, net of income taxes	8,185	7,406
Amounts included in Accumulated other comprehensive loss (pre-tax):
Net actuarial loss	$ 11,388	$ 12,521