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Investments - Equity Securities, FV-NI (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI
Fair value	$ 39,407	$ 37,958
Percent of Total	100.00%	100.00%
Mutual Fund
Debt and Equity Securities, FV-NI
Fair value	$ 34,732	$ 33,064
Percent of Total	88.10%	87.10%
Nonredeemable Preferred Stocks
Debt and Equity Securities, FV-NI
Fair value	$ 4,675	$ 4,894
Percent of Total	11.90%	12.90%

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Equity securities, FV-NI Percent of Total

+ References

No definition available.

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- Definition

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
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-URI https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI https://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

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