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Maturities on Long-Term Debt Outstanding (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Debt Disclosure [Abstract]  
Remainder of 2013 $ 8,871
2014 47,312
2015 65,055
2016 70,969
2017 70,969
2018 201,077
Thereafter 300,000
Total $ 764,253