Investments - Schedule of Other Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Other Investments
Fair Value	$ 561,728	$ 663,602
Certificates of Deposit
Other Investments
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	0
Fair value - certificates of deposit	300
Limited Partnership
Other Investments
Fixed maturities, cost	16,045
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	977
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	796
Fair Value of Limited Partnership Interest	16,226
Short-term Investments
Other Investments
Fair Value	181
Fixed maturities, cost	182
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	1
Other Long-term Investments
Other Investments
Other Investments	16,707
Fixed maturities, cost	16,527
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	977
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 797

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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A savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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Amount of investments classified as other.

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