Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies and Nature of Operations - Aggregate Warranty Liabilities (Detail)

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Summary of Significant Accounting Policies and Nature of Operations - Aggregate Warranty Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Product Warranties Disclosures [Abstract]    
Warranty liabilities, beginning of period $ 282 $ 384
Adjustments to preexisting warranty liabilities (58) (232)
Additions to warranty liabilities 165 248
Reductions to warranty liabilities (93) (118)
Warranty liabilities, end of period $ 297 $ 282