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Financial Instruments - Summary of Effects of Interest Rate Swap (Detail) (Interest Rate Swap [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Interest Rate Swap [Member]
   
Derivatives, Fair Value [Line Items]    
Gain (loss) Recognized in AOCL, net of tax $ 230 $ (93)
Loss Reclassified from AOCL into Expense $ (459) $ (387)