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Operations by Industry Segment and Geographic Area - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013 Country	Mar. 31, 2012	Mar. 31, 2011
Segment Reporting Information [Line Items]
Operations in number of countries	100
Property, plant, and equipment, net	$ 350,126	$ 353,215	$ 344,385
United States
Segment Reporting Information [Line Items]
Percentage of sales to customers	43.00%	42.60%	41.30%
Property, plant, and equipment, net	$ 127,191	$ 119,242

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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