Balance Sheet Details - Letters of Credit (Details) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Balance Sheet Related Disclosures [Abstract]
Value added tax license	$ 1,395	$ 1,536
Customer proposal guarantee	1,353	1,373
Property leases	699	699
Letters of credit outstanding	$ 3,447	$ 3,608

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