Summary of Property Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Property, Plant and Equipment [Line Items]
Land, buildings, and improvements	$ 206,610	$ 201,038
Machinery and equipment	528,546	511,599
Construction in progress	25,139	29,779
Property, Plant and Equipment, Gross, Total	760,295	742,416
Less accumulated depreciation	(410,169)	(389,201)
Total	$ 350,126	$ 353,215	$ 344,385

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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