PENSION AND OTHER POSTRETIREMENT BENEFITS Fair value level of pension plan assets (Details) - USD ($)	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2021
Equity securities - international mutual funds: Developed market
Defined Benefit Plan Disclosure
Minimum % of Fund Assets Invested in Non-US Stocks Developed Market	80.00%
Fixed Income: Government sponsored entities
Defined Benefit Plan Disclosure
Amount Backed by US Government	$ 114,000
Fixed Income: Multi-strategy bond fund | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	34,989,000	$ 148,000	$ 40,388,000
Pension Benefits | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	15,072,000
Pension Benefits | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	19,917,000
Pension Benefits | Cash and Cash Equivalents
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	51,000
Pension Benefits | Cash and Cash Equivalents | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	51,000
Pension Benefits | Cash and Cash Equivalents | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits | Equity securities U.S. companies
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	15,389,000
Pension Benefits | Equity securities U.S. companies | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	10,387,000
Pension Benefits | Equity securities U.S. companies | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	5,002,000
Pension Benefits | Equity securities International companies
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	521,000
Pension Benefits | Equity securities International companies | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	521,000
Pension Benefits | Equity securities International companies | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits | Equity securities - international mutual funds: Developed market
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	4,025,000
Pension Benefits | Equity securities - international mutual funds: Developed market | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	923,000
Pension Benefits | Equity securities - international mutual funds: Developed market | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	3,102,000
Pension Benefits | Equity securities - international mutual funds: Emerging market
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,517,000
Pension Benefits | Equity securities - international mutual funds: Emerging market | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,149,000
Pension Benefits | Equity securities - international mutual funds: Emerging market | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	368,000
Pension Benefits | Commodities
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,137,000
Pension Benefits | Commodities | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,137,000
Pension Benefits | Commodities | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits | Fixed Income: U.S. Treasuries
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	3,019,000
Pension Benefits | Fixed Income: U.S. Treasuries | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	904,000
Pension Benefits | Fixed Income: U.S. Treasuries | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	2,115,000
Pension Benefits | Fixed Income: Debt securities
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,656,000
Pension Benefits | Fixed Income: Debt securities | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits | Fixed Income: Debt securities | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,656,000
Pension Benefits | Fixed Income: Government sponsored entities
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,256,000
Pension Benefits | Fixed Income: Government sponsored entities | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits | Fixed Income: Government sponsored entities | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	1,256,000
Pension Benefits | Fixed Income: Multi-strategy bond fund
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	5,079,000
Pension Benefits | Fixed Income: Multi-strategy bond fund | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	5,079,000
Pension Benefits | Money Market Fund
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	389,000
Pension Benefits | Money Market Fund | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits | Money Market Fund | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	389,000
Pension Benefits | Other
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	950,000
Pension Benefits | Other | Level 1
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	0
Pension Benefits | Other | Level 2
Defined Benefit Plan Disclosure
Defined Benefit Plan, Plan Assets, Amount	$ 950,000