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Schedule I (Details) $ in Thousands | Dec. 31, 2021 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | $ 168,678 | [1],[2]
Market Value | 220,333 | [2]
Amount at which shown in the Balance Sheet | 220,333 | [2],[3]
Fixed maturity securities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 75,511 | [1]
Market Value | 79,791 |
Amount at which shown in the Balance Sheet | 79,791 | [3]
Government obligations |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 0 | [1]
Market Value | 0 |
Amount at which shown in the Balance Sheet | 0 | [1],[3]
General obligations of U.S. states, territories and political subdivisions |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 16,467 | [1]
Market Value | 17,383 |
Amount at which shown in the Balance Sheet | 17,383 | [3]
Special revenue issuer obligations of U.S. states, territories and political subdivisions |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 31,695 | [1]
Market Value | 33,573 |
Amount at which shown in the Balance Sheet | 33,573 | [3]
Public utilities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 10,260 | [1]
Market Value | 10,839 |
Amount at which shown in the Balance Sheet | 10,839 | [3]
Corporate debt securities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 17,089 | [1]
Market Value | 17,996 |
Amount at which shown in the Balance Sheet | 17,996 | [3]
Equity securities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 29,478 | [1]
Market Value | 76,853 |
Amount at which shown in the Balance Sheet | 76,853 | [3]
Public utilities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 286 | [1]
Market Value | 506 |
Amount at which shown in the Balance Sheet | 506 | [3]
Banks, trusts and insurance companies |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 2,785 | [1]
Market Value | 7,578 |
Amount at which shown in the Balance Sheet | 7,578 | [3]
Industrial, miscellaneous and all other |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 23,540 | [1]
Market Value | 53,581 |
Amount at which shown in the Balance Sheet | 53,581 | [3]
Technology |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 2,867 | [1]
Market Value | 15,188 |
Amount at which shown in the Balance Sheet | 15,188 | [3]
Short-term investments |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 45,930 | [1]
Market Value | 45,930 |
Amount at which shown in the Balance Sheet | 45,930 | [3]
Other investments |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 17,759 | [2]
Market Value | 17,759 | [2]
Amount at which shown in the Balance Sheet | 17,759 | [2],[3]
Total other investments |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 63,689 | [1]
Market Value | 63,689 |
Amount at which shown in the Balance Sheet | 63,689 | [3]
Other Affiliates |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Amount at which shown in the Balance Sheet | $ 2,539 |
[1] | Fixed maturity securities are shown at amortized cost and equity securities are shown at original cost.
[2] | The above summary of investments does not include investments in related parties accounted for under the cost and equity methods of accounting in the amount of $2,539.
[3] | All fixed maturity securities presented are classified as available-for-sale and shown at estimated fair value. Equity securities are shown at fair value.

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