XML 37 R26.htm IDEA: XBRL DOCUMENT v3.8.0.1
INVESTMENTS Debt Securities and Common Stock (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
security
Sep. 30, 2017
USD ($)
security
position
Sep. 30, 2016
USD ($)
security
Dec. 31, 2016
USD ($)
Securities in unrealized loss positions        
Unrealized Loss   $ 8,753,000   $ 18,596,000
Other-than-temporary impairment (OTTI) losses $ 95,000 $ 2,090,000 $ 95,000  
Debt securities        
Securities in unrealized loss positions        
Number of unrealized loss positions | position   288    
Number of securities in unrealized loss positions for 12 months or longer | security   89    
Unrealized losses as percentage of fixed income portfolio cost basis   0.40%    
Number of securities with OTTI losses recognized in earnings | security 1 2 1  
Other than Temporary Impairment Losses recognized in earnings   $ 2,100,000 $ 100,000  
Other than Temporary Impairment Losses recognized in other comprehensive earnings   $ 0 $ 0  
Common stock security        
Securities in unrealized loss positions        
Number of unrealized loss positions | position   6    
Number of securities in unrealized loss positions for 12 months or longer | security   2    
Unrealized Loss   $ 1,700,000    
Other-than-temporary impairment (OTTI) losses   $ 0