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Investments - Equity Securities, FV-NI (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI
Fair value	$ 40,502	$ 36,794
Percent of Total	100.00%	100.00%
Mutual Fund
Debt and Equity Securities, FV-NI
Fair value	$ 35,480	$ 31,818
Percent of Total	87.60%	86.50%
Common Stock
Debt and Equity Securities, FV-NI
Fair value	$ 5,022	$ 4,976
Percent of Total	12.40%	13.50%

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Equity securities, FV-NI Percent of Total

+ References

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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-Topic 210
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-Section 45
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B

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