Accrued Expenses and Other Current Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2013	Dec. 31, 2012	Mar. 30, 2012	Dec. 31, 2011
Accrued Expenses and Other Current Liabilities [Line Items]
Accrued compensation and benefits	$ 7,632	$ 6,655
Accrued warranty	3,550	2,777	2,898	3,035
Customer deposits	1,527	3,033
Other	9,647	6,497
Total	$ 22,356	$ 18,962

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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