• Filing Date: 2020-03-06
  • Form Type: 10-K
  • Description: Annual report
v3.19.3.a.u2
Investments (Other-than-temporary Impairment) - Additional Information (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Security
Dec. 31, 2018
USD ($)
Security
Dec. 31, 2017
USD ($)
Security
Schedule of Investments [Line Items]      
Other-than-temporary impairment losses | $ $ 289 $ 80 $ 1,467
Cumulative Credit Losses | $   $ 0  
Number of securities in an unrealized loss position | Security 8 82  
Number of securities had been in an unrealized loss position for 12 months or longer | Security 0 35  
Fixed-Maturity Securities [Member]      
Schedule of Investments [Line Items]      
Other-than-temporary impairment losses, number of securities sold | Security     4
Other-than-temporary impairment losses, number of securities | Security 1 1  
Other-than-temporary impairment losses | $ $ 289 $ 80 $ 428
Fixed-maturity securities with cumulative credit losses | $     $ 475
Number of securities with cumulative credit losses sold | Security     2
Equity Securities [Member]      
Schedule of Investments [Line Items]      
Net other-than-temporary impairment losses | $     $ 1,039