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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2018
Fair Value Disclosures [Abstract]  
Fair Value Measurements for Investments in Available-for-Sale Fixed Maturity and Equity Securities

The following table presents our fair value measurements for our investments in available-for-sale fixed maturity and equity securities at March 31, 2018:

 

     Fair Value Measurements Using  
     Fair Value      Quoted Prices in
Active Markets
for Identical
Assets (Level 1)		      Significant
Other
Observable
Inputs (Level 2)		      Significant
Unobservable
Inputs (Level 3)		  
            (in thousands)  

U.S. Treasury securities and obligations of U.S. government corporations and agencies

    $ 43,537      $ —        $ 43,537      $ —    

Obligations of states and political subdivisions

      118,883        —          118,883        —    

Corporate securities

      108,301        —          108,301        —    

Mortgage-backed securities

      254,696        —          254,696        —    

Equity securities

      37,167        37,167        —          —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Total investments in the fair value hierarchy

      562,584        37,167        525,417        —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Investment measured at net asset value

      13,863        —          —          —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Totals

    $ 576,447      $ 37,167      $ 525,417      $ —    
  

 

 

     

 

 

     

 

 

     

 

 

  

The following table presents our fair value measurements for our investments in available-for-sale fixed maturity and equity securities at December 31, 2017:

 

     Fair Value Measurements Using  
     Fair Value      Quoted Prices in
Active Markets
for Identical
Assets (Level 1)		      Significant
Other
Observable
Inputs (Level 2)		      Significant
Unobservable
Inputs (Level 3)		  
            (in thousands)  

U.S. Treasury securities and obligations of U.S. government corporations and agencies

    $ 44,049      $ —        $ 44,049      $ —    

Obligations of states and political subdivisions

      132,117        —          132,117        —    

Corporate securities

      105,739        —          105,739        —    

Mortgage-backed securities

      257,041        —          257,041        —    

Equity securities

      36,736        36,736        —          —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Total investments in the fair value hierarchy

      575,682        36,736        538,946        —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Investment measured at net asset value

      13,709        —          —          —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Totals

    $ 589,391      $ 36,736      $ 538,946      $ —