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Loss and Loss Expense Reserves (Tables)
3 Months Ended
Mar. 31, 2017
Loss and Loss Expense Reserves [Abstract]  
Summary of activity in reserves for losses and loss expenses
Activity in the reserves for losses and loss expenses for the three months ended March 31 is summarized as follows.  All amounts are shown net of reinsurance, unless otherwise indicated.
 
  
2017
  
2016
 
Reserves at the beginning of the quarter
 
$
324,767
  
$
301,753
 
         
Provision for losses and loss expenses:
        
   Claims occurring during the current quarter
  
48,487
   
39,861
 
   Claims occurring during prior quarters
  
112
   (1,238 )
   Total incurred
  
48,599
   38,623  
         
Loss and loss expense payments:
        
   Claims occurring during the current quarter
  
9,508
   7,087  
   Claims occurring during prior quarters
  
41,814
   35,526  
   Total paid
  
51,322
   42,613  
Reserves at the end of the quarter
  
322,044
   298,296  
         
Reinsurance recoverable on unpaid losses at the end of the quarter
  
256,797
   226,498  
Reserves, gross of reinsurance
        
    recoverable, at the end of the quarter
 
$
578,841
   
$
524,794