Investments - Additional Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) Security	Dec. 31, 2020 USD ($) Security	Dec. 31, 2019 USD ($)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Debt Securities	$ 38,326	$ 36,254
Number of securities in unrealized loss position \| Security	23	3
Proceeds from sale of investment in fixed maturity securities	$ 9,200	$ 8,600
Proceeds from Sale of Other Investments	10,800	11,000
Payments to Acquire Investments	12,375	14,168	$ 17,520
Investments on deposit with the state insurance department	4,100
U.S. Treasury securities, obligations of U.S. Government agencies and municipalities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Debt Securities	30,021	28,831
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	7,400
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	5,500
Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Debt Securities	$ 8,305	$ 7,423

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

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