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Investments - Additional Information (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 USD ($) Security | Dec. 31, 2019 USD ($) Security
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities | $ 32,147 | $ 32,006
Number of securities in unrealized loss position | Security | 1 | 10
Proceeds from sale of investment in fixed maturity securities | $ 2,000 |
Proceeds from Sale of Other Investments | 3,700 |
Investments on deposit with the state insurance department | 4,300 |
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities | 26,589 | $ 26,622
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities | Short-term Investments |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities | 10,700 | 4,600
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities | Bank Time Deposits |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities | 7,400 | 7,700
Corporate Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Debt Securities | $ 5,558 | $ 5,384

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