Fair Value - Fair Value of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 30,204	$ 18,743	$ 10,940	$ 22,012
Accounts receivable, net	20,821	13,997
Long-term debt (including current portion)	77,255	37,500
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	30,204	18,743
Accounts receivable, net	20,821	13,997
Accounts payable and accrued liabilities	15,522	13,279
Long-term debt (including current portion)	77,255	37,500
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	30,204	18,743
Accounts receivable, net	20,821	13,997
Accounts payable and accrued liabilities	15,522	13,279
Long-term debt (including current portion)	$ 77,255	$ 37,500

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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