Acquisition (Detail) - Fair values of the assets acquired and liabilities of the Business assumed at the acquisition date (USD $) In Thousands, unless otherwise specified	Apr. 03, 2012
Inventories	$ 11,165
Property, plant and equipment	25,570
Other assets	630
Total identifiable assets acquired	37,365
Accrued expenses	1,026
Total liabilities assumed	1,026
Net assets acquired	$ 36,339