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, 2021 USD ($)
Foreign government
Debt Securities, Available-for-sale [Line Items]
Number of Securities	38
Aggregate Fair Value	$ 130,621
Gross Unrealized Loss	$ 38,849
Corporate
Debt Securities, Available-for-sale [Line Items]
Number of Securities	8
Aggregate Fair Value	$ 26,903
Gross Unrealized Loss	$ 1,644
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Number of Securities	4
Aggregate Fair Value	$ 210
Gross Unrealized Loss	$ 13
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Number of Securities	2
Aggregate Fair Value	$ 154
Gross Unrealized Loss	$ 14
Debt Securities
Debt Securities, Available-for-sale [Line Items]
Number of Securities	53
Aggregate Fair Value	$ 172,482
Gross Unrealized Loss	$ 40,931
State and municipal
Debt Securities, Available-for-sale [Line Items]
Number of Securities	1
Aggregate Fair Value	$ 14,594
Gross Unrealized Loss	$ 411