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Fair Value Measurements - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Fair Value Disclosures [Abstract]    
Fair value discount rate 5.30%  
Fair value of long-term debt $ 3.5 $ 6.3
Carrying value of long-term debt $ 3.6 $ 6.4