Investments | 4. Investments The amortized cost and estimated fair value of investments in debt and equity securities by category is as follows (in thousands): Gross Gross Unrealized Unrealized Amortized Cost Gains Losses Fair Value As of March 31, 2019 U.S. Treasury securities and obligations of U.S. Government $ 48,490 $ 7 $ (288) $ 48,209 Corporate bonds 217,979 1,296 (440) 218,835 Collateralized corporate bank loans 130,526 66 (1,752) 128,840 Municipal bonds 113,812 845 (298) 114,359 Mortgage-backed 12,938 14 (218) 12,734 Total debt securities 523,745 2,228 (2,996) 522,977 Total equity securities 68,709 25,549 (5,602) 88,656 Total other investments 3,763 — (2,579) 1,184 Total investments $ 596,217 $ 27,777 $ (11,177) $ 612,817 As of December 31, 2018 U.S. Treasury securities and obligations of U.S. Government $ 48,609 $ 5 $ (508) $ 48,106 Corporate bonds 243,314 440 (1,602) 242,152 Collateralized corporate bank loans 131,779 19 (5,270) 126,528 Municipal bonds 112,574 3,791 (838) 115,527 Mortgage-backed 13,992 11 (446) 13,557 Total debt securities 550,268 4,266 (8,664) 545,870 Total equity securities 68,709 20,693 (8,506) 80,896 Total other investments 3,763 — (2,615) 1,148 Total investments $ 622,740 $ 24,959 $ (19,785) $ 627,914 Major categories of net investment gains (losses) on investments are summarized as follows (in thousands): Three Months Ended March 31, 2019 2018 U.S. Treasury securities and obligations of U.S. Government $ — $ — Corporate bonds 23 (8) Collateralized corporate bank loans 17 12 Municipal bonds 4,101 (21) Mortgage-backed — 2 Equity securities — — Gain (loss) on investments 4,141 (15) Unrealized gains (losses) on other investments 36 (363) Unrealized gains (losses) on equity investments 7,760 (4,457) Investment gains (losses), net $ 11,937 $ (4,835) We realized gross gains on investments of $4.2 million and $60 thousand during the three months ended March 31, 2019 and 2018, respectively. We realized gross losses on investments of $0.1 million and $ 75 thousand for the three months ended March 31, 2019 and 2018, respectively. We had no proceeds from the sale of investment securities during the three months ended March 31, 2019 or 2018. Realized investment gains and losses are recognized in operations on the first in-first out method. The following schedules summarize the gross unrealized losses showing the length of time that investments have been continuously in an unrealized loss position as of March 31, 2019 and December 31, 2018 (in thousands): As of March 31, 2019 12 months or less Longer than 12 months Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities and obligations of U.S. Government $ — $ — $ 47,205 $ (288) $ 47,205 $ (288) Corporate bonds 13,462 (72) 85,392 (368) 98,854 (440) Collateralized corporate bank loans 115,083 (1,660) 4,832 (92) 119,915 (1,752) Municipal bonds 11,463 (79) 25,229 (219) 36,692 (298) Mortgage-backed 769 - 8,825 (218) 9,594 (218) Total debt securities 140,777 (1,811) 171,483 (1,185) 312,260 (2,996) Total equity securities 16,082 (1,518) 5,537 (4,084) 21,619 (5,602) Total other investments 914 (1,873) 270 (706) 1,184 (2,579) Total investments $ 157,773 $ (5,202) $ 177,290 $ (5,975) $ 335,063 $ (11,177) As of December 31, 2018 12 months or less Longer than 12 months Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities and obligations of U.S. Government $ 18,902 $ (181) $ 28,201 $ (327) $ 47,103 $ (508) Corporate bonds 117,450 (907) 100,060 (695) 217,510 (1,602) Collateralized corporate bank loans 120,410 (4,938) 4,931 (332) 125,341 (5,270) Municipal bonds 14,281 (96) 25,891 (742) 40,172 (838) Mortgage-backed 6,592 (60) 5,986 (386) 12,578 (446) Total debt securities 277,635 (6,182) 165,069 (2,482) 442,704 (8,664) Total equity securities 30,981 (3,699) 4,475 (4,807) 35,456 (8,506) Total other investments 1,148 (2,615) — — 1,148 (2,615) Total investments $ 309,764 $ (12,496) $ 169,544 $ (7,289) $ 479,308 $ (19,785) We had a total of 232 debt securities with an unrealized loss, of which 137 were in an unrealized loss position for less than one year and 95 were in an unrealized loss position for a period of one year or greater, as of March 31, 2019. We had a total of 328 debt securities with an unrealized loss, of which 221 were in an unrealized loss position for less than one year and 107 were in an unrealized loss position for a period of one year or greater, as of December 31, 2018. We consider these losses as a temporary decline in value as they are predominately on securities that we do not intend to sell and do not believe we will be required to sell prior to recovery of our amortized cost basis. We see no other indications that the decline in values of these securities is other-than-temporary. We complete a detailed analysis each quarter to assess whether any decline in the fair value of any fixed maturity investment below cost is deemed other-than-temporary. All fixed maturity investments with an unrealized loss are reviewed. We recognize an impairment loss when an investment’s value declines below cost, adjusted for accretion, amortization and previous other-than-temporary impairments, and it is determined that the decline is other-than-temporary. We assess whether we intend to sell, or it is more likely than not that we will be required to sell, a fixed maturity investment before recovery of its amortized cost basis less any current period credit losses. For fixed maturity investments that are considered other-than-temporarily impaired and that we do not intend to sell and will not be required to sell, we separate the amount of the impairment into the amount that is credit related (credit loss component) and the amount due to all other factors. The credit loss component is recognized in earnings and is the difference between the investment’s amortized cost basis and the present value of its expected future cash flows. The remaining difference between the investment’s fair value and the present value of future expected cash flows is recognized in other comprehensive income. Details regarding the carrying value of the other investments portfolio as of March 31, 2019 and December 31, 2018 are as follows (in thousands): 2019 2018 Investment Type Equity warrant $ 1,184 $ 1,148 Total other investments $ 1,184 $ 1,148 We acquired this warrant in an active market. The warrant entitles us to buy the underlying common stock of a publicly traded company at a fixed price until the expiration date of January 19, 2021. The amortized cost and estimated fair value of debt securities at March 31, 2019 by contractual maturity are as follows. Expected maturities may differ from contractual maturities because certain borrowers may have the right to call or prepay obligations with or without penalties. Amortized Cost Fair Value (in thousands) Due in one year or less $ 122,350 $ 121,972 Due after one year through five years 264,476 265,022 Due after five years through ten years 92,907 91,964 Due after ten years 31,074 31,285 Mortgage-backed 12,938 12,734 $ 523,745 $ 522,977 |