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Accumulated Other Comprehensive Income (Details 1) - USD ($) $ in Thousands | 3 Months Ended
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Nov. 30, 2017 | Nov. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning balance |  | $ 54,620 |
Other comprehensive income (loss) before reclassifications |  | 2,055 |
Amounts reclassified from AOCI |  | (5,191) |
Other comprehensive income (loss) |  | (3,136) | $ (13,038)
Ending balance |  | 51,484 |
Foreign currency translation adjustment |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning balance | [1] | 57,582 |
Other comprehensive income (loss) before reclassifications | [1] | (3,801) |
Amounts reclassified from AOCI | [1] | 0 |
Other comprehensive income (loss) | [1] | (3,801) |
Ending balance | [1] | 53,781 |
Derivative instruments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning balance | [2] | 29,967 |
Other comprehensive income (loss) before reclassifications | [2] | 7,744 |
Amounts reclassified from AOCI | [2] | (5,191) |
Other comprehensive income (loss) | [2] | 2,553 |
Ending balance | [2] | 32,520 |
Actuarial loss |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning balance |  | (33,215) |
Other comprehensive income (loss) before reclassifications |  | (423) |
Amounts reclassified from AOCI |  | 0 |
Other comprehensive income (loss) |  | (423) |
Ending balance |  | (33,638) |
Prior service cost |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning balance |  | 889 |
Other comprehensive income (loss) before reclassifications |  | 0 |
Amounts reclassified from AOCI |  | 0 |
Other comprehensive income (loss) |  | 0 |
Ending balance |  | 889 |
Available for sale securities |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning balance | [3] | (603) |
Other comprehensive income (loss) before reclassifications | [3] | (1,465) |
Amounts reclassified from AOCI | [3] | 0 |
Other comprehensive income (loss) | [3] | (1,465) |
Ending balance | [3] | $ (2,068) |
[1] | (1) There is no tax benefit (expense) related to the foreign currency translation adjustment components of AOCI, including reclassification adjustments, for the three months ended November 30, 2017 .
[2] | (2) $ 3.5 million of AOCI reclassified into earnings during the three months ended November 30, 2017 for derivative instruments was classified as a component reduction of income tax expense . The remaining amount reclassified into earnings was primarily classified as a component of cost of re venue. $ 11.3 million e xpected to be reclassified into earnings during the next 12 months will be classified as a component reduction of income tax expense . The remaining amount expected to be reclassified into earnings will be classified as a component of cost of revenue. The annual tax benefit (expense) for unrealized gains on derivative instruments is not material for the three months ended November 30, 2017 .
[3] | (3) There is no tax benefit (expense) related to the available for sale securities components of AOCI, including reclassification adjustments, for the three months ended November 30, 2017 .

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004921&loc=d3e1436-108581 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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