• Filing Date: 2014-03-12
  • Form Type: 10-K
  • Description: Annual report
v2.4.0.8
Fair Value Measurements - Available-for-Sale Securities Measured at Fair Value (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Financial Assets:    
Total fixed-maturity securities $ 112,151 $ 35,953
Equity securities 17,649 8,876
Total available-for-sale securities 129,800 44,829
Fair Value, Measurements, Recurring [Member]
   
Financial Assets:    
Cash and cash equivalents 293,398 230,214
Total available-for-sale securities 129,800 44,829
Total 423,198 275,043
Financial Liabilities:    
Total long-term debt 130,020  
Fair Value, Measurements, Recurring [Member] | Senior Notes [Member]
   
Financial Liabilities:    
Total long-term debt 43,390  
Fair Value, Measurements, Recurring [Member] | Convertible Debt [Member]
   
Financial Liabilities:    
Total long-term debt 86,630  
Fair Value, Measurements, Recurring [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 112,151 35,953
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
   
Financial Assets:    
Equity securities 17,649 8,876
Fair Value, Measurements, Recurring [Member] | U.S. Treasury and U.S. Government Agencies [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 4,564 1,447
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 25,404 10,860
Fair Value, Measurements, Recurring [Member] | Commercial Mortgage-Backed Securities [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 11,332 11,644
Fair Value, Measurements, Recurring [Member] | State, Municipalities, and Political Subdivisions [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 70,451 11,066
Fair Value, Measurements, Recurring [Member] | Redeemable Preferred Stock [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 400 936
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member]
   
Financial Assets:    
Cash and cash equivalents 293,398 230,214
Total available-for-sale securities 46,045 32,321
Total 339,443 262,535
Financial Liabilities:    
Total long-term debt     
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | Senior Notes [Member]
   
Financial Liabilities:    
Total long-term debt     
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | Convertible Debt [Member]
   
Financial Liabilities:    
Total long-term debt     
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 28,396 23,445
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | Equity Securities [Member]
   
Financial Assets:    
Equity securities 17,649 8,876
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | U.S. Treasury and U.S. Government Agencies [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 3,520 583
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | Corporate Bonds [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 24,476 10,860
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | Commercial Mortgage-Backed Securities [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities      
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | State, Municipalities, and Political Subdivisions [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities    11,066
Fair Value, Measurements, Recurring [Member] | (Level 1) [Member] | Redeemable Preferred Stock [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 400 936
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member]
   
Financial Assets:    
Cash and cash equivalents      
Total available-for-sale securities 83,755 12,508
Total 83,755 12,508
Financial Liabilities:    
Total long-term debt 43,390  
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | Senior Notes [Member]
   
Financial Liabilities:    
Total long-term debt 43,390  
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | Convertible Debt [Member]
   
Financial Liabilities:    
Total long-term debt     
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 83,755 12,508
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | Equity Securities [Member]
   
Financial Assets:    
Equity securities      
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | U.S. Treasury and U.S. Government Agencies [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 1,044 864
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | Corporate Bonds [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 928   
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | Commercial Mortgage-Backed Securities [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 11,332 11,644
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | State, Municipalities, and Political Subdivisions [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities 70,451   
Fair Value, Measurements, Recurring [Member] | (Level 2) [Member] | Redeemable Preferred Stock [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities      
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member]
   
Financial Assets:    
Cash and cash equivalents      
Total available-for-sale securities      
Total      
Financial Liabilities:    
Total long-term debt 86,630  
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | Senior Notes [Member]
   
Financial Liabilities:    
Total long-term debt     
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | Convertible Debt [Member]
   
Financial Liabilities:    
Total long-term debt 86,630  
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities      
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | Equity Securities [Member]
   
Financial Assets:    
Equity securities      
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | U.S. Treasury and U.S. Government Agencies [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities      
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | Corporate Bonds [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities      
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | Commercial Mortgage-Backed Securities [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities      
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | State, Municipalities, and Political Subdivisions [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities      
Fair Value, Measurements, Recurring [Member] | (Level 3) [Member] | Redeemable Preferred Stock [Member] | Fixed-Maturity Securities [Member]
   
Financial Assets:    
Total fixed-maturity securities