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Investments - Schedule of Other Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Other Investments
Fair Value	$ 153,857	$ 204,682
Other Long-term Investments
Other Investments
Unrealized Loss	1
Unrealized Gain	357
Fair Value	2,599
Fixed maturities, cost	2,243	3,072
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	357
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	1
Short-term Investments
Other Investments
Unrealized Loss	1
Unrealized Gain	0
Fair Value	116	$ 125
Fixed maturities, cost	117
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	1
Limited Partnership
Other Investments
Unrealized Loss	0
Unrealized Gain	357
Fixed maturities, cost	2,126
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	357
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	0
Fair Value of Limited Partnership Interest	$ 2,483

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