Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Apr. 30, 2022

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Benefit Costs

The components of net periodic pension and postretirement health benefit costs were as follows:

	Pension Benefits
	(in thousands)
	For the Three Months Ended April 30,				For the Nine Months Ended April 30,
	2022		2021		2022		2021
Interest cost	$	267	$	292	$	801	$	875
Expected return on plan assets	(646)		(722)		(1,939)		(2,166)
Amortization of:
Other actuarial loss	36		218		108		653
Net periodic benefit cost	$	(343)	$	(212)	$	(1,030)	$	(638)
	Postretirement Health Benefits
	(in thousands)
	For the Three Months Ended April 30,				For the Nine Months Ended April 30,
	2022		2021		2022		2021
Service cost	$	31	$	35	$	92	$	104
Interest cost	15		13		44		38
Amortization of:
Other actuarial loss	—		1		—		3
Prior service costs	(2)		(2)		(5)		(5)
Net periodic benefit cost	$	44	$	47	$	131	$	140

Schedule of Assumptions Used

Assumptions used in the previous calculations were as follows:

	Pension Benefits				Postretirement Health Benefits
	For the Three and Nine Months Ended April 30,
	2022		2021		2022		2021
Discount rate for net periodic benefit cost	2.57	%	2.14	%	2.10	%	1.63	%
Rate of increase in compensation levels	—	%	—	%	—	%	—	%
Long-term expected rate of return on assets	6.50	%	6.50	%	—	%	—	%

The medical cost trend assumption for postretirement health benefits was 7.05%. The graded trend rate is expected to decrease to an ultimate rate of 4.50% in fiscal year 2038.