PENSION AND OTHER POSTRETIREMENT BENEFITS Change in Benefit Obligation and Plan Assets, Funded Status (Details) - USD ($)	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Pension Benefits
Change in benefit obligation:
Benefit obligation, beginning of year	$ 33,741,000	$ 42,267,000
Service cost	0	0
Interest cost	1,009,000	1,068,000
Actuarial gain	(3,054,000)	(8,386,000)
Benefits paid	941,000	1,208,000
Settlements	(30,755,000)	0
Benefit obligation, end of year	0	33,741,000
Change in plan assets:
Fair value of plan assets, beginning of year	34,989,000	40,388,000
Actual return on plan assets	502,000	(4,191,000)
Employer contribution	0	0
Benefits paid	941,000	1,208,000
Settlements	(30,755,000)	0
Surplus Transfer	(3,647,000)	0
Fair value of plan assets, end of year	148,000	34,989,000
Funded status, recorded in Consolidated Balance Sheets	148,000	1,248,000
Postretirement Health Benefits
Change in benefit obligation:
Benefit obligation, beginning of year	2,119,000	3,125,000
Service cost	84,000	123,000
Interest cost	73,000	58,000
Actuarial gain	(429,000)	(1,155,000)
Benefits paid	6,000	32,000
Settlements	0	0
Benefit obligation, end of year	1,853,000	2,119,000
Change in plan assets:
Fair value of plan assets, beginning of year	0	0
Actual return on plan assets	0	0
Employer contribution	(6,000)	(32,000)
Benefits paid	6,000	32,000
Settlements	0	0
Surplus Transfer	0	0
Fair value of plan assets, end of year	0	0
Funded status, recorded in Consolidated Balance Sheets	$ (1,853,000)	$ (2,119,000)