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Commitments And Contingencies (Narrative) (Details)	Nov. 30, 2017 USD ($)
Purchase Commitment [Member]
Loss Contingencies [Line Items]
Commitment outstanding	$ 0
Indemnification Agreement 1 [Member]
Loss Contingencies [Line Items]
Liabilities related to indemnification agreement	0
Senior Officers And Directors [Member] | Indemnification Agreement 1 [Member]
Loss Contingencies [Line Items]
Liabilities related to indemnification agreement	$ 0

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- Definition

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+ References

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- Definition

Liabilities related to indemnification agreement.

+ References

No definition available.

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- Definition

Purchase commitments amount outstanding.

+ References

No definition available.

+ Details

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- Details

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