XML 67 R52.htm IDEA: XBRL DOCUMENT v3.20.2
Investments (Amortized Cost and Estimated Fair Value of Investments in Debt and Equity Securities by Category) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost $ 569,498 $ 550,268
Fair Value 574,279 545,870
Equity Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Equity securities, Amortized Cost 71,895 68,709
Total equity securities 99,215 80,896
Investments, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Investments, Amortized cost 645,156 622,740
Investments, Gross Unrealized Gains 40,710 24,959
Investments, Gross Unrealized Losses (10,203) (19,785)
Investments, Fair value 675,663 627,914
Mortgage Backed [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost 7,999  
Fair Value 7,827  
Other Investments [Member]    
Equity Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Equity securities, Amortized Cost 3,763 3,763
Equity Securities, Gross Unrealized Losses (1,594) (2,615)
Total equity securities 2,169 1,148
Debt Securities [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost 569,498 550,268
Gross Unrealized Gain 5,682 4,266
Gross Unrealized Loss (901) (8,664)
Fair Value 574,279 545,870
Debt Securities [Member] | U.S. Treasury Securities and Obligations of U.S. Government [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost 66,441 48,609
Gross Unrealized Gain 162 5
Gross Unrealized Loss (3) (508)
Fair Value 66,600 48,106
Debt Securities [Member] | Corporate Bonds [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost 297,601 243,314
Gross Unrealized Gain 3,387 440
Gross Unrealized Loss (163) (1,602)
Fair Value 300,825 242,152
Debt Securities [Member] | Collateralized Corporate Bank Loans [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost 115,669 131,779
Gross Unrealized Gain 556 19
Gross Unrealized Loss (468) (5,270)
Fair Value 115,757 126,528
Debt Securities [Member] | Municipal Bonds [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost 81,787 112,574
Gross Unrealized Gain 1,531 3,791
Gross Unrealized Loss (48) (838)
Fair Value 83,270 115,527
Debt Securities [Member] | Mortgage Backed [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Amortized Cost 8,000 13,992
Gross Unrealized Gain 46 11
Gross Unrealized Loss (219) (446)
Fair Value 7,827 13,557
Equity Securities [Member]    
Equity Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Equity securities, Amortized Cost 71,895 68,709
Equity Securities, Gross Unrealized Gains 35,028 20,693
Equity Securities, Gross Unrealized Losses (7,708) (8,506)
Total equity securities $ 99,215 $ 80,896