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Loss and Loss Expense Reserves (Tables)
9 Months Ended
Sep. 30, 2018
Loss and Loss Expense Reserves [Abstract]  
Activity in Reserves for Losses and Loss Expenses
Activity in the reserves for losses and loss expenses for the nine months ended September 30, 2018 and 2017 is summarized as follows.  All amounts are shown net of reinsurance, unless otherwise indicated.

 
2018
 
2017
Reserves, gross of reinsurance recoverable, at the beginning of the year
$
680,274
 
$
576,330
Reinsurance recoverable on unpaid losses at the beginning of the year
 
308,143
  
251,563
Reserves at the beginning of the year
 
372,131
  
324,767
      
Provision for losses and loss expenses:
     
Claims occurring during the current period
 
229,644
  
164,546
Claims occurring during prior periods
 
14,683
  
16,480
Total incurred
 
244,327
  
181,026
      
Loss and loss expense payments:
     
Claims occurring during the current period
 
49,510
  
41,616
Claims occurring during prior periods
 
123,167
  
109,616
Total paid
 
172,677
  
151,232
Reserves at the end of the period
 
443,781
  
354,561
      
Reinsurance recoverable on unpaid losses at the end of the period
 
334,056
  
301,445
Reserves, gross of reinsurance recoverable, at the end of the period
$
777,837
 
$
656,006