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Fixed Maturity Securities In An Unrealized Loss Position (Non-Investment Grade Fixed Maturity Securities) (Details) - External Credit Rating, Non Investment Grade $ in Thousands	Jun. 30, 2024 USD ($)
Foreign government
Debt Securities, Available-for-sale [Line Items]
Number of Securities	51
Aggregate Fair Value	$ 99,230
Gross Unrealized Loss	$ 159,930
State and municipal
Debt Securities, Available-for-sale [Line Items]
Number of Securities	5
Aggregate Fair Value	$ 24,865
Gross Unrealized Loss	$ 4,838
Corporate
Debt Securities, Available-for-sale [Line Items]
Number of Securities	30
Aggregate Fair Value	$ 42,131
Gross Unrealized Loss	$ 2,651
Mortgage-backed
Debt Securities, Available-for-sale [Line Items]
Number of Securities	16
Aggregate Fair Value	$ 4,107
Gross Unrealized Loss	$ 201
Special revenue
Debt Securities, Available-for-sale [Line Items]
Number of Securities	102
Aggregate Fair Value	$ 170,333
Gross Unrealized Loss	$ 167,620

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