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Leases (Supplemental Balance Sheet Information Related to Operating Leases) (Details) - USD ($) $ in Thousands | Nov. 30, 2019 | Aug. 31, 2019 | Nov. 30, 2018
--- | --- | --- | ---
Leases [Abstract] |  |  |
Operating lease ROU assets | $ 25,764 | $ 0 | $ 0
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:OperatingLeaseRightOfUseAsset |  |
Operating lease short-term liabilities | $ 4,200 | 0 | 0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesCurrent |  |
Operating lease long-term liabilities | $ 25,323 | $ 0 | $ 0
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:OperatingLeaseLiabilityNoncurrent |  |
Total lease liabilities | $ 29,523 |  |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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