Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Commitments And Contingencies Disclosure [Abstract]
Lease expenses	$ 1.3	$ 1.2	$ 1.7
Amount required for payment of materials	2.5
Purchase of materials	72.7	57.0	62.9
Letters of credit	0.6
Commitments to purchase equipment	$ 1.9

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration