Legal Proceedings - Additional Information (Detail) - Patent	Feb. 05, 2016	Sep. 17, 2015
Commitments And Contingencies Disclosure [Abstract]
Number of lawsuits		4
Number of additional lawsuits	2
Number of Patent covering infringement	3

Number of another entity's patents that the entity has allegedly infringed.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration