Valuation And Qualifying Accounts - Additional Information (Detail) - USD ($)	12 Months Ended
Jan. 01, 2016	Jan. 02, 2015	Jan. 03, 2014
Trade Accounts Receivable [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Written-off Net of Recoveries	$ 7,000	$ 135,000	$ 50,000

Total of recoveries of amounts due the Entity that had previously been written off as uncollectible using allowances (the valuation accounts that are netted against the cost of an asset to value it at its carrying value) and total of reestablishments of reserves (liabilities established to represent expected future costs) that had previously been utilized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration