Balance Sheet Details - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Balance Sheet Details [Line Items]
Letters of credit outstanding	$ 3.3	$ 2.7
Value added tax license	1.4	1.4
Customer proposal guarantee	1.2	0.5
Property leases	$ 0.7	$ 0.8

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant