XML 63 R53.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
INVESTMENTS - Investments In Fixed Income and Equity Securities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Available-for-sale    
Total amortized cost $ 1,915,278 $ 1,776,465
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) $ 1,983,086 1,760,515
Percentage of securities of portfolio rated with highest credit rating by by one or more major rating agency 97.00%  
Total fixed income and equity securities    
Net unrealized appreciation of available-for-sale fixed income securities $ 67,800 (16,000)
U.S. government    
Available-for-sale    
Total amortized cost 186,699 199,982
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 193,661 200,229
Gross Unrealized Gains 6,994 1,232
Gross Unrealized Losses (32) (985)
U.S. Agency    
Available-for-sale    
Total amortized cost 36,535 31,716
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 38,855 31,904
Gross Unrealized Gains 2,362 403
Gross Unrealized Losses (42) (215)
Non-U.S. govt. & agency    
Available-for-sale    
Total amortized cost 7,333 8,170
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 7,628 7,639
Gross Unrealized Gains 295  
Gross Unrealized Losses   (531)
Mtge/ABS/CMO    
Available-for-sale    
Gross Unrealized Losses (1,000)  
Agency MBS    
Available-for-sale    
Total amortized cost 411,808 402,992
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 420,165 395,253
Gross Unrealized Gains 8,920 1,709
Gross Unrealized Losses (563) (9,448)
ABS/CMBS/MBS    
Available-for-sale    
Total amortized cost 222,832 137,224
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 224,870 136,723
Gross Unrealized Gains 2,514 375
Gross Unrealized Losses (476) (876)
Corporate Debt    
Available-for-sale    
Total amortized cost 659,640 681,909
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 692,067 668,679
Gross Unrealized Gains 33,245 2,894
Gross Unrealized Losses (818) (16,124)
Municipal    
Available-for-sale    
Total amortized cost 390,431 314,472
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 405,840 320,088
Gross Unrealized Gains 16,131 6,926
Gross Unrealized Losses $ (722) (1,310)
General obligations to state and local governments Percentage 42.00%  
Revenue based obligations percentage 58.00%  
Percentage of securities of portfolio rated as AA or better 86.00%  
Percentage of securities of portfolio rated as A or better 99.00%  
Debt securities    
Available-for-sale    
Total amortized cost $ 1,915,278 1,776,465
Available-for-sale, at fair value (amortized cost - $1,915,278 in 2019 and $1,776,465 in 2018) 1,983,086 1,760,515
Gross Unrealized Gains 70,461 13,539
Gross Unrealized Losses (2,653) $ (29,489)
Equity securities    
Equity Securities, FV-NI, Unrealized Gain (Loss)    
Increase Decrease In Equity Securities Gross Unrealized Loss (8,100)  
Gross Unrealized Losses $ 2,000