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.

No definition available.

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Legal Proceedings - Additional Information (Detail) - Avid Technology Inc. [Member] - Patents	Jun. 29, 2012	Oct. 31, 2011
Media grid [Member]
Loss Contingencies [Line Items]
Infringements of number of patents held		2
Spectrum [Member]
Loss Contingencies [Line Items]
Infringements of number of patents held	1