Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Mar. 29, 2015	Dec. 28, 2014
Income Tax Disclosure [Abstract]
Deferred tax assets, net	$ 53.9us-gaap_DeferredTaxAssetsNet	$ 54.3us-gaap_DeferredTaxAssetsNet

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b),(c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Name:	us-gaap_DeferredTaxAssetsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant