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Loss and Loss Expense Reserves (Tables)
6 Months Ended
Jun. 30, 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 six months ended June 30 is summarized as follows.  All amounts are shown net of reinsurance, unless otherwise indicated.
 
  
2017
  
2016
 
Reserves at the beginning of the year
 
$
324,767
  
$
301,753
 
         
Provision for losses and loss expenses:
        
   Claims occurring during the current year
  
103,666
   
83,052
 
   Claims occurring during prior years
  
16,687
   
(1,763
)
   Total incurred
  
120,353
   
81,289
 
         
Loss and loss expense payments:
        
   Claims occurring during the current year
  
23,548
   
18,973
 
   Claims occurring during prior years
  
84,628
   
56,372
 
   Total paid
  
108,176
   
75,345
 
Reserves at the end of the period
  
336,944
   
307,697
 
         
Reinsurance recoverable on unpaid losses at the end of the period
  
290,781
   
233,651
 
Reserves, gross of reinsurance
        
    recoverable, at the end of the period
 
$
627,725
  
$
541,348