|
Pension and Other Postretirement Benefits (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jan. 31, 2015
|
Jan. 31, 2014
|
Jan. 31, 2015
|
Jan. 31, 2014
|
|
| Pension Plan | ||||
| Defined Benefit Plans and Other Postretirement Benefit Plans | ||||
| Service cost | $ 371 | $ 361 | $ 803 | $ 721 |
| Interest cost | 457 | 435 | 925 | 871 |
| Expected return on plan assets | (469) | (429) | (939) | (858) |
| Amortization of Prior service costs | 3 | 4 | 5 | 7 |
| Amortization of Other actuarial loss | 139 | 78 | 289 | 156 |
| Net periodic benefit cost | 501 | 449 | 1,083 | 897 |
| Postretirement Health Plan | ||||
| Defined Benefit Plans and Other Postretirement Benefit Plans | ||||
| Service cost | 34 | 30 | 67 | 60 |
| Interest cost | 26 | 29 | 53 | 58 |
| Amortization of Net transition obligation | 0 | 4 | 0 | 8 |
| Amortization of Prior service costs | (1) | (2) | (3) | (3) |
| Amortization of Other actuarial loss | 9 | 8 | 18 | 15 |
| Net periodic benefit cost | $ 68 | $ 69 | $ 135 | $ 138 |