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Long-term Debt - Estimate of Principal Payments to be Made for the Amount Due on the Surplus Note (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Debt Disclosure [Abstract]  
2014 $ 7,471
2015 8,471
2016 8,471
2017 1,471
2018 1,471
Thereafter 11,395
Total $ 38,750