Significant Accounting Policies (Details 4) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Significant Accounting Policies
Accumulated undistributed net investment losses	$ (55,890)	$ (54,780)
Unrealized appreciation of portfolio securities, net	18,208	8,889
Accumulated undistributed net capital gains	(3,664)	602
Accumulated deficit	$ (41,346)	$ (45,289)

The noncurrent portion of the reserve for accumulated deferred investment tax credits as of the balance sheet date. This is the remaining investment credit, which will reduce the cost of services collected from ratepayers by a ratable portion over the investment's regulatory life.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(26)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 27
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482525/740-10-45-27

Name:	us-gaap_AccumulatedDeferredInvestmentTaxCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant