• Filing Date: 2018-03-07
  • Form Type: 10-K
  • Description: Annual report
v3.8.0.1
Reinsurance - Additional Information (Detail)
1 Months Ended 4 Months Ended 12 Months Ended
Sep. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2017
USD ($)
Reinsurers
Dec. 31, 2017
USD ($)
Reinsurers
Dec. 31, 2016
USD ($)
Reinsurers
Dec. 31, 2015
USD ($)
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]            
Percentage of ceding commission on ceded premiums written     30.00% 30.00%    
Excess of loss reinsurance contract period       3 years    
Reinsurance recoverable     $ 100,760,000 $ 100,760,000 $ 0 $ 0
Number of reinsurers | Reinsurers     37 37 35  
Recoveries pertaining to reinsurance contracts       $ 103,104,000 $ 0  
Number of reinsurers in which major reinsurance recoverable concentrated | Reinsurers     2 2    
Percentage of reinsurance recoverable major reinsurers       29.70%    
Percentage of assumed premiums to net premium earned       4.90% 2.50% 22.00%
Credit risk associated with reinsurance receivables     $ 0 $ 0    
Ceded losses recognized as a reduction in losses and LAE       214,082,000    
Net reduction in premiums ceded         $ 12,677,000 $ 18,322,000
Net increase in premiums ceded       5,740,000    
Amount received from retrospective reinsurance contracts $ 5,716,000 $ 37,800,000        
Other assets     10,550,000 10,550,000 11,342,000  
Prepaid reinsurance premiums     22,286,000 22,286,000 24,554,000  
Oxbridge [Member]            
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]            
Ceded losses recognized as a reduction in losses and LAE       7,400,000    
Net reduction in premiums ceded         1,929,000 $ 2,797,000
Net increase in premiums ceded       933,000    
Amount received from retrospective reinsurance contracts   $ 7,560,000        
Other assets     479,000 479,000 1,043,000  
Prepaid reinsurance premiums     0 0 338,000  
Reinsurance [Member]            
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]            
Other assets     2,393,000 2,393,000 5,810,000  
Prepaid reinsurance premiums     $ 0 $ 0 $ 2,152,000