Investments | 4. Investments were as follows as of March 31, 2020 and December 31, 2019: Gross Gross Unrealized Unrealized Fair Carrying Description Cost Gains Losses Value Value (in thousands) March 31, 2020 Nuclear decommissioning trust (1) Debt securities $ 60,161 $ 3,775 $ — $ 63,936 $ 63,936 Equity securities 85,027 40,375 (12,142 ) 113,260 113,260 Cash and other 370 — — 370 370 Total Nuclear Decommissioning Trust $ 145,558 $ 44,150 $ (12,142 ) $ 177,566 $ 177,566 Unrestricted investments Government obligations $ 2,872 $ 11 $ — $ 2,883 $ 2,872 Debt securities 240 — — 240 240 Total Unrestricted Investments $ 3,112 $ 11 $ — $ 3,123 $ 3,112 Other Equity securities $ 110 $ — $ (7 ) $ 103 $ 103 Non-marketable equity investments 2,144 2,331 — 4,475 2,144 Total Other $ 2,254 $ 2,331 $ (7 ) $ 4,578 $ 2,247 $ 182,925 December 31, 2019 Nuclear decommissioning trust (1) Debt securities $ 59,748 $ 4,325 $ — $ 64,073 $ 64,073 Equity securities 85,303 63,858 (2,557 ) 146,604 146,604 Cash and other 431 — — 431 431 Total Nuclear Decommissioning Trust $ 145,482 $ 68,183 $ (2,557 ) $ 211,108 $ 211,108 Unrestricted investments Government obligations $ 2,869 $ 4 $ — $ 2,873 $ 2,869 Debt securities 240 — — 240 240 Total Unrestricted Investments $ 3,109 $ 4 $ — $ 3,113 $ 3,109 Other Equity securities $ 110 $ 15 $ — $ 125 $ 125 Non-marketable equity investments 2,146 2,176 — 4,322 2,146 Total Other $ 2,256 $ 2,191 $ — $ 4,447 $ 2,271 $ 216,488 (1) Investments in the nuclear decommissioning trust are restricted for the use of funding our share of the asset retirement obligations of the future decommissioning of North Anna. See Note 3 of the Notes to Consolidated Financial Statements in our 2019 Annual Report on Form 10-K. Unrealized gains and losses on investments held in the nuclear decommissioning trust are deferred as a regulatory liability or regulatory asset, respectively. Contractual maturities of debt securities as of March 31, 2020, were as follows: Description Less than 1 year 1-5 years 5-10 years More than 10 years Total (in thousands) Other (1) $ — $ — $ 63,936 $ — $ 63,936 Held to maturity 3,112 — — — 3,112 Total $ 3,112 $ — $ 63,936 $ — $ 67,048 (1) The contractual maturities of other debt securities are measured using the effective duration of the bond fund within the nuclear decommissioning trust. |