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Nature of Operations and Basis of Presentation - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 1 Months Ended 6 Months Ended
Apr. 30, 2016
USD ($)
$ / shares
shares
Jun. 30, 2015
USD ($)
Jun. 30, 2016
State
$ / shares
Dec. 31, 2015
$ / shares
Equity [Line Items]        
Number of states | State     13  
Common stock, par value | $ / shares     $ 0.01 $ 0.01
Issuance of common stock   $ 504    
Private Placement [Member] | RenaissanceRe Ventures Ltd [Member]        
Equity [Line Items]        
Number of common stock, shares issued | shares 583,771      
Common stock, par value | $ / shares $ 17.13      
Issuance of common stock $ 10,000      
Proceeds used to cancellation of outstanding indebtedness 7,035      
Cash proceeds from private placement $ 2,965