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Supplemental Cash Flow Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Cash Flow Supplemental Disclosures [Line Items]      
Interest paid $ 5,334 $ 2,802 $ 1,854
Income taxes net of refunds 73,168 46,819 45,137
Carrier Enterprise III
      
Cash Flow Supplemental Disclosures [Line Items]      
Common stock issued for Carrier Enterprise III   93,250  
Carrier Enterprise II
      
Cash Flow Supplemental Disclosures [Line Items]      
Net assets of locations contributed to Carrier Enterprise II     $ 14,769