Fixed Maturity Securities in an Unrealized Loss Position (Non-Investment Grade Fixed Maturity Securities) (Details) - External Credit Rating, Non Investment Grade $ in Thousands	Dec. 31, 2023 USD ($)
Foreign government
Debt Securities, Available-for-sale [Line Items]
Number of Securities	5
Aggregate Fair Value	$ 197
Gross Unrealized Loss	$ 148
Corporate
Debt Securities, Available-for-sale [Line Items]
Number of Securities	15
Aggregate Fair Value	$ 4,393
Gross Unrealized Loss	$ 185
Mortgage- Backed
Debt Securities, Available-for-sale [Line Items]
Number of Securities	16
Aggregate Fair Value	$ 21,424
Gross Unrealized Loss	$ 1,928
Asset-backed
Debt Securities, Available-for-sale [Line Items]
Number of Securities	5
Aggregate Fair Value	$ 22,830
Gross Unrealized Loss	$ 6,469
Debt Securities
Debt Securities, Available-for-sale [Line Items]
Number of Securities	74
Aggregate Fair Value	$ 151,533
Gross Unrealized Loss	$ 116,031
State and municipal
Debt Securities, Available-for-sale [Line Items]
Number of Securities	33
Aggregate Fair Value	$ 102,689
Gross Unrealized Loss	$ 107,301