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Fair Value of Financial Instruments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Fair Value Disclosures [Abstract]  
Estimated fair value of Long-term debt (including current maturities) $ 1,948,040
Gross amount of company long term debt 1,938,802
Carrying amount of company long term debt $ 1,938,802