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Borrowings - Maturity of Borrowings (Detail) (USD $)
Dec. 31, 2013
Schedule Of Borrowings [Line Items]  
2014 $ 57,000,000
2015   
2016   
2017   
2018   
Thereafter 8,248,000
Total borrowings 65,248,000
Fixed Interest Rate [Member]
 
Schedule Of Borrowings [Line Items]  
2014 57,000,000
2015   
2016   
2017   
2018   
Thereafter   
Total borrowings 57,000,000
Floating Interest Rate [Member]
 
Schedule Of Borrowings [Line Items]  
2014   
2015   
2016   
2017   
2018   
Thereafter 8,248,000
Total borrowings $ 8,248,000