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Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Total $ 24,324 $ 30,610
Surplus Note [Member]    
Debt Instrument [Line Items]    
Notes payable 16,176 17,280
Term Loan [Member]    
Debt Instrument [Line Items]    
Term loan 6,758 $ 13,330
Promissory Note [Member]    
Debt Instrument [Line Items]    
Notes payable $ 1,390