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Maturities on Long-Term Debt Outstanding (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Debt Disclosure [Abstract]    
2014 $ 47,313  
2015 65,055  
2016 70,969  
2017 70,969  
2018 201,077  
Thereafter 300,000  
Total $ 755,383 $ 374,250