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Segment Information
9 Months Ended
Sep. 30, 2019
Segment Information [Abstract]  
Segment Information
(5)  Segment Information:

The Company has one reportable business segment in its operations: Property and Casualty Insurance.  The property and casualty insurance segment provides multiple lines of insurance coverage primarily to commercial automobile companies, as well as to independent contractors who contract with commercial automobile companies.  In addition, the Company provides workers' compensation coverage for a variety of operations outside the transportation industry.

The following table summarizes segment revenues for the three and nine months ended September 30, 2019 and 2018:

  
Three Months Ended
September 30
  
Nine Months Ended
September 30
 
  
2019
  
2018
  
2019
  
2018
 
Revenues:
            
Net premiums earned
 
$
110,288
  
$
96,807
  
$
335,931
  
$
314,209
 
Net investment income
  
6,703
   
5,578
   
19,434
   
16,010
 
Net realized and unrealized gains (losses) on investments
  
125
   
2,373
   
9,041
   
(5,595
)
Commissions and other income
  
2,716
   
3,413
   
6,761
   
7,488
 
Total revenues
 
$
119,832
  
$
108,171
  
$
371,167
  
$
332,112