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Investments - Equity Securities, FV-NI (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Mutual Fund |  |
Debt and Equity Securities, FV-NI |  |
Fair value | $ 5,170 | $ 152
Percent of Total | 27.20% | 2.00%
Common Stock |  |
Debt and Equity Securities, FV-NI |  |
Fair value | $ 6,914 | $ 0
Percent of Total | 36.30% | 0.00%
Nonredeemable Preferred Stocks |  |
Debt and Equity Securities, FV-NI |  |
Fair value | $ 6,952 | $ 7,293
Percent of Total | 36.50% | 98.00%
Equity Securities |  |
Debt and Equity Securities, FV-NI |  |
Fair value | $ 19,036 | $ 7,445
Percent of Total | 100.00% | 100.00%

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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 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details
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