Income Taxes (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Income Taxes [Line Items]
Income tax expense (benefit), including excise tax expense (benefit)	$ 343,000	$ 327,000	$ 637,000	$ 857,000
Excise tax expense (benefit)	0	(64,000)	0	(127,000)
Net deferred tax liabilities	10,000,000.0		10,000,000.0		$ 10,600,000
Subsidiaries
Income Taxes [Line Items]
Income tax expense (benefit), including excise tax expense (benefit)	$ 300,000	$ 400,000	$ 300,000	$ 1,000,000.0

Amount of tax expense (benefit) on investment income classified as operating. Excludes realized and unrealized gain (loss) on investment.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478297/946-220-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-3

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration