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Related Party Transactions - Non-interest Bearing Advances - Additional Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Related Party Transaction [Line Items]    
Advances to affiliates $ 13,026 $ 11,942
Advances from affiliates 22,987 43,205
Affiliated Entity [Member]    
Related Party Transaction [Line Items]    
Advances to affiliates 13,026 11,942
Advances from affiliates $ 22,987 $ 43,205