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Business Acquisitions and Dispositions - Assets and Liabilities Classified as Held for Sale (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Business Combinations [Abstract]    
Inventories $ 7,630  
Property and equipment, net 6,170 4,101
Goodwill 1,011  
Assets held for sale 14,811 4,101
Liabilities associated with assets held for sale - non-trade $ 6,587