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Employee Benefit Plans | 9 Months Ended
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Apr. 30, 2015
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] |
Postemployment Benefits Disclosure [Text Block] | Employee Benefit Plans The components of net periodic postretirement benefit cost for the three and nine months ended April 30, 2015 and 2014 were as follows:
| Three months ended April 30, |  | Nine months ended April 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Components of net periodic postretirement benefit cost: |  |  |  |  |  |  |
Service cost | $ | 40 |  |  | $ | 168 |  |  | $ | 203 |  |  | $ | 505 |
Interest cost | 35 |  |  | 134 |  |  | 177 |  |  | 401 |
Amortization of prior service credit | (40 | ) |  | (51 | ) |  | (202 | ) |  | (152 | )
Amortization of net actuarial gain | (106 | ) |  | (66 | ) |  | (540 | ) |  | (199 | )
Curtailment gain | (4,296 | ) |  | — |  |  | (4,296 | ) |  | — |
Net periodic postretirement benefit cost | $ | (4,367 | ) |  | $ | 185 |  |  | $ | (4,658 | ) |  | $ | 555 |
In March 2015, the Company announced the elimination of postretirement medical benefits for eligible domestic employees retiring on or after January 1, 2016. This amendment resulted in a decrease in the accumulated postretirement benefit obligation liability of $4,490 and a curtailment gain of $4,296. The curtailment gain was recognized in SG&A on the Condensed Consolidated Statements of Earnings, during the three months ended April 30, 2015.

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- Definition The entire disclosure for postemployment benefits, which may include supplemental unemployment benefits, obligations recognized for all types of benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement. Disclosure may also include discussion that an obligation for postemployment benefits is not accrued in accordance with regulation only because the amount cannot be reasonably estimated. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -SubTopic 10 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6410138&loc=d3e79691-111665 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6410195&loc=d3e80090-111668 + Details
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