Property and Equipment - Components of Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Apr. 01, 2012
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 289,234	$ 254,615
Less accumulated depreciation and amortization	192,898	176,605
Property and Equipment, net	96,336	78,010
Land [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	14,656	11,663
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	46,462	41,186
Production and test equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	220,130	193,820
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 7,986	$ 7,946

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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