Investments (Tables)

12 Months Ended

Dec. 31, 2023

Investments [Abstract]

Schedule Of Investments

Investments were as follows as of December 31, 2023 and 2022:

			Gross		Gross
			Unrealized		Unrealized			Fair		Carrying
Description	Cost		Gains		Losses			Value		Value
	(in thousands)
December 31, 2023
Nuclear decommissioning trust (1)
Debt securities	$	89,587	$	—	$	(11,626	)	$	77,961	$	77,961
Equity securities		97,056		90,539		(5,231	)		182,364		182,364
Cash and other		282		—		—			282		282
Total Nuclear Decommissioning Trust	$	186,925	$	90,539	$	(16,857	)	$	260,607	$	260,607
Other
Equity securities	$	125	$	12	$	—		$	137	$	137
Non-marketable equity investments		2,177		2,262		—			4,439		2,177
Total Other	$	2,302	$	2,274	$	—		$	4,576	$	2,314
										$	262,921
December 31, 2022
Nuclear decommissioning trust (1)
Debt securities	$	86,770	$	—	$	(13,083	)	$	73,687	$	73,687
Equity securities		93,878		64,139		(6,699	)		151,318		151,318
Cash and other		258		—		—			258		258
Total Nuclear Decommissioning Trust	$	180,906	$	64,139	$	(19,782	)	$	225,263	$	225,263
Other
Equity securities	$	238	$	41	$	—		$	279	$	279
Non-marketable equity investments		2,158		2,182		—			4,340		2,158
Total Other	$	2,396	$	2,223	$	—		$	4,619	$	2,437
										$	227,700

(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—Accounting for Asset Retirement and Environmental Obligations. 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 December 31, 2023, were as follows:

	Less than						More than
Description	1 year		1-5 years		5-10 years		10 years		Total
	(in thousands)
Other (1)	$	—	$	—	$	77,961	$	—	$	77,961
Total	$	—	$	—	$	77,961	$	—	$	77,961

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