Investments (Tables)

3 Months Ended

Mar. 31, 2021

Investments [Abstract]

Schedule Of Investments

Investments were as follows as of March 31, 2021 and December 31, 2020:

			Gross		Gross
			Unrealized		Unrealized		Fair		Carrying
Description	Cost		Gains		Losses		Value		Value
	(in thousands)
March 31, 2021
Nuclear decommissioning trust (1)
Debt securities	$	68,197	$	4,188	$	—	$	72,385	$	72,385
Equity securities		92,567		84,694		—		177,261		177,261
Cash and other		644		—		—		644		644
Total Nuclear Decommissioning Trust	$	161,408	$	88,882	$	—	$	250,290	$	250,290
Other
Equity securities	$	132	$	39	$	—	$	171	$	171
Non-marketable equity investments		2,146		2,372		—		4,518		2,146
Total Other	$	2,278	$	2,411	$	—	$	4,689	$	2,317
									$	252,607
December 31, 2020
Nuclear decommissioning trust (1)
Debt securities	$	66,727	$	7,493	$	—	$	74,220	$	74,220
Equity securities		89,472		76,828		—		166,300		166,300
Cash and other		1,817		—		—		1,817		1,817
Total Nuclear Decommissioning Trust	$	158,016	$	84,321	$	—	$	242,337	$	242,337
Other
Equity securities	$	132	$	34	$	—	$	166	$	166
Non-marketable equity investments		2,145		2,340		—		4,485		2,145
Total Other	$	2,277	$	2,374	$	—	$	4,651	$	2,311
									$	244,648

⁽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 2020 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.

Schedule Of Contractual Maturities Of Debt Securities

Contractual maturities of debt securities as of March 31, 2021, were as follows:

Description	Less than 1 year		1-5 years		5-10 years		More than 10 years		Total
	(in thousands)
Other (1)	$	—	$	—	$	72,385	$	—	$	72,385
Total	$	—	$	—	$	72,385	$	—	$	72,385

⁽¹⁾ The contractual maturities of other debt securities are measured using the effective duration of the bond fund within the nuclear decommissioning trust.