Accrued Expenses and Other Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Apr. 26, 2014	Apr. 27, 2013
Accrued Expenses and Other Current Liabilities [Abstract]
Payroll and other compensation	$ 42,667	$ 39,270
Accrued product warranty, current portion	9,815	9,532
Customer deposits	20,903	15,852
Other current liabilities	29,491	34,454
Accrued expenses and other current liabilities	$ 102,876	$ 99,108

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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