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Employee Benefit Plans (Tables) | 12 Months Ended
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Jul. 31, 2015
Compensation and Retirement Disclosure [Abstract] |
Schedule of Changes in Accumulated Postemployment Benefit Obligations | The following table provides a reconciliation of the changes in the Plan’s accumulated benefit obligation during the years ended July 31:
|  | 2015 |  | 2014
Obligation at beginning of year |  | $ | 8,056 |  |  | $ | 13,023 |
Service cost |  | 210 |  |  | 674 |
Interest cost |  | 222 |  |  | 534 |
Actuarial loss (gain) |  | 502 |  |  | (4,691 | )
Benefit payments |  | (365 | ) |  | (473 | )
Plan amendments |  | (1,935 | ) |  | (1,011 | )
Curtailment gain |  | (2,555 | ) |  | — |
Obligation at end of fiscal year |  | $ | 4,135 |  |  | $ | 8,056 |
Schedule of Amounts Recognized in Balance Sheet | As of July 31, 2015 and 2014, amounts recognized as liabilities in the accompanying Consolidated Balance Sheets consist of:
|  | 2015 |  | 2014
Current liability |  | $ | 659 |  |  | $ | 476 |
Non-current liability |  | 3,476 |  |  | 7,580 |
|  | $ | 4,135 |  |  | $ | 8,056 |
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) | As of July 31, 2015 and 2014, pre-tax amounts recognized in accumulated other comprehensive income in the accompanying Consolidated Balance Sheets consist of:
|  | 2015 |  | 2014
Net actuarial gain |  | $ | 6,655 |  |  | $ | 7,960 |
Prior service credit |  | 1,035 |  |  | 2,011 |
|  | $ | 7,690 |  |  | $ | 9,971 |
Schedule of Net Periodic Benefit Cost Not yet Recognized | Net periodic benefit cost for the Plan for fiscal years 2015, 2014, and 2013 includes the following components:
|  | Years Ended July 31,
|  | 2015 |  | 2014 |  | 2013
Net periodic postretirement benefit cost included the following components: |  |  |  |  |  |
Service cost |  | $ | 210 |  |  | $ | 674 |  |  | $ | 770 |
Interest cost |  | 222 |  |  | 534 |  |  | 476 |
Amortization of prior service credit |  | (1,169 | ) |  | (203 | ) |  | (203 | )
Amortization of net actuarial gain |  | (804 | ) |  | (265 | ) |  | (47 | )
Curtailment gain |  | (4,296 | ) |  | — |  |  | — |
Periodic postretirement benefit cost |  | $ | (5,837 | ) |  | $ | 740 |  |  | $ | 996 |
Schedule of Assumptions Used | The following assumptions were used in accounting for the Plan:
|  | 2015 |  | 2014 |  | 2013
Weighted average discount rate used in determining accumulated postretirement benefit obligation |  | 3.00 | % |  | 3.50 | % |  | 4.00 | %
Weighted average discount rate used in determining net periodic benefit cost |  | 3.41 | % |  | 4.00 | % |  | 3.25 | %
Assumed health care trend rate used to measure APBO at July 31 |  | 7.00 | % |  | 7.50 | % |  | 8.00 | %
Rate to which cost trend rate is assumed to decline (the ultimate trend rate) |  | 5.50 | % |  | 5.50 | % |  | 5.50 | %
Fiscal year the ultimate trend rate is reached |  | 2018 |  |  | 2018 |  |  | 2018 |
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates | A one-percentage point change in assumed health care cost trend rates would have the following effects on the Plan:
|  | One-Percentage Point Increase |  | One-Percentage Point Decrease
Effect on future service and interest cost |  | $ | 2 |  |  | $ | (2 | )
Effect on accumulated postretirement benefit obligation at July 31, 2015 |  | 8 |  |  | (8 | )
Schedule of Expected Benefit Payments | The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid during the years ending July 31:
2016 | $ | 659 |
2017 | 614 |
2018 | 569 |
2019 | 508 |
2020 | 439 |
2021 through 2025 | 1,264 |

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- Definition Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the change in the accumulated postemployment benefit obligation from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the effect of a one-percentage-point increase and the effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs and the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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