PENSION AND OTHER POSTRETIREMENT BENEFITS Amounts Recognized in Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019
Defined Benefit Plans and Postretirement Health Benefits
Other noncurrent Liabilities	$ (15,140)	$ (23,721)
Pension Benefits
Defined Benefit Plans and Postretirement Health Benefits
Deferred income tax	2,443	5,346
Other current liabilities	0	0
Other noncurrent Liabilities	(11,946)	(20,828)
Accumulated other comprehensive income - net of tax, Net actuarial loss	11,642	14,731
Accumulated other comprehensive income - net of tax, Prior service cost (income)	0	0
Postretirement Health Benefits
Defined Benefit Plans and Postretirement Health Benefits
Deferred income tax	850	754
Other current liabilities	(97)	(65)
Other noncurrent Liabilities	(3,194)	(2,893)
Accumulated other comprehensive income - net of tax, Net actuarial loss	352	184
Accumulated other comprehensive income - net of tax, Prior service cost (income)	$ 0	$ (24)