Post Closing Purchase Price (Detail) (Beall Corporation, USD $) In Thousands, unless otherwise specified	Feb. 04, 2013
Beall Corporation
Business Combination Allocation Of Purchase Price [Line Items]
Current assets	$ 1,023
Property, plant and equipment	2,714
Intangibles	8,900
Goodwill	1,800
Total assets	14,393
Current liabilities	(462)
Total liabilities	(462)
Business acquisition cost of acquired entity purchase price	$ 13,900

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