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Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Promissory note $ 1,390  
Total 24,600 $ 30,610
Surplus Note [Member]    
Debt Instrument [Line Items]    
Surplus note 16,545 17,280
Term Loan [Member]    
Debt Instrument [Line Items]    
Term loan $ 6,665 $ 13,330