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Commitments and Contingencies - Strategic Alliance Agreement - Additional Information (Detail)	1 Months Ended
	Nov. 30, 2016
Strategic Alliance Agreement [Member]
Commitments And Contingencies [Line Items]
Initial term of agreement	7 years

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- Definition

Commitments and contingencies.

+ References

No definition available.

+ Details

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- Definition

Initial term of agreement.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
Data Type:	na
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Period Type: