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Pension and Other Postretirement Benefits (Tables)
 6 Months Ended
Jan. 31, 2024
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 January 31,For the Six Months Ended January 31,
 2024202320242023
Interest cost$— $338 $— $673 
Expected return on plan assets— (558)— (1,116)
Amortization of:
  Other actuarial loss— 19 — 28 
Net periodic benefit cost$— $(201)$— $(415)
Postretirement Health Benefits
 (in thousands)
 For the Three Months Ended January 31,For the Six Months Ended January 31,
 2024202320242023
Service cost$18 $20 $37 $42 
Interest cost19 16 41 36 
Amortization of:
  Other actuarial loss(29)(23)(53)(41)
  Prior service costs(1)(1)(3)(3)
Net periodic benefit cost$7 $12 $22 $34