PENSION AND OTHER POSTRETIREMENT BENEFITS Amounts Recognized in Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jul. 31, 2018	Jul. 31, 2017
Defined Benefit Plans and Postretirement Health Benefits
Other noncurrent Liabilities	$ (15,906)	$ (29,161)
Pension Benefits
Defined Benefit Plans and Postretirement Health Benefits
Deferred income tax	3,525	9,311
Other current liabilities	0	0
Other noncurrent Liabilities	(13,296)	(26,285)
Accumulated other comprehensive income - net of tax, Net actuarial loss	10,301	10,036
Accumulated other comprehensive income - net of tax, Prior service cost (income)	2	3
Postretirement Health Benefits
Defined Benefit Plans and Postretirement Health Benefits
Deferred income tax	639	1,108
Other current liabilities	(57)	(49)
Other noncurrent Liabilities	(2,610)	(2,876)
Accumulated other comprehensive income - net of tax, Net actuarial loss	110	315
Accumulated other comprehensive income - net of tax, Prior service cost (income)	$ (29)	$ (27)