DEFERRED COMPENSATION SERP (Details) - Supplemental Employee Retirement Plan - USD ($)	12 Months Ended
Jul. 31, 2020	Jul. 31, 2019
SERP Disclosure
SERP, benefit obligation	$ 1,447,000	$ 2,708,000
SERP expense	34,000	$ 539,000
Curtailment gain	$ 1,296,000

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of (increase) decrease in benefit obligation of defined benefit plan from event reducing expected years of future service of present employees or eliminating accrual of benefits for some or all future services of present employees.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

+ References

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