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Schedule I (Details) $ in Thousands | Dec. 31, 2020 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | $ 172,606 | [1],[2]
Market Value | 210,723 | [2]
Amount at which shown in the Balance Sheet | 210,723 | [2],[3]
Fixed maturity securities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 112,037 |
Market Value | 117,713 |
Amount at which shown in the Balance Sheet | 117,713 | [3]
Government obligations |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 24,026 |
Market Value | 24,083 |
Amount at which shown in the Balance Sheet | 24,083 | [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 | 17,186 |
Market Value | 18,439 |
Amount at which shown in the Balance Sheet | 18,439 | [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 | 33,635 |
Market Value | 36,134 |
Amount at which shown in the Balance Sheet | 36,134 | [3]
Public utilities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 11,509 |
Market Value | 12,286 |
Amount at which shown in the Balance Sheet | 12,286 | [3]
Corporate debt securities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 25,681 |
Market Value | 26,771 |
Amount at which shown in the Balance Sheet | 26,771 | [3]
Equity securities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 32,478 |
Market Value | 64,919 |
Amount at which shown in the Balance Sheet | 64,919 | [3]
Public utilities |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 323 |
Market Value | 486 |
Amount at which shown in the Balance Sheet | 486 | [3]
Banks, trusts and insurance companies |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 2,640 |
Market Value | 5,938 |
Amount at which shown in the Balance Sheet | 5,938 | [3]
Industrial, miscellaneous and all other |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 26,144 |
Market Value | 46,802 |
Amount at which shown in the Balance Sheet | 46,802 | [3]
Technology |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 3,371 |
Market Value | 11,693 |
Amount at which shown in the Balance Sheet | 11,693 | [3]
Short-term investments |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 15,170 |
Market Value | 15,170 |
Amount at which shown in the Balance Sheet | 15,170 | [3]
Other investments |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 12,921 | [2]
Market Value | 12,921 | [2]
Amount at which shown in the Balance Sheet | 12,921 | [2],[3]
Total other investments |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Cost | 28,091 |
Market Value | 28,091 |
Amount at which shown in the Balance Sheet | $ 28,091 | [3]
[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 $2,572.
[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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