Liability For Future Policy Benefits (Revenue and Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Benefit Reserves
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	$ 455,425	$ 460,859
Interest expense	97,139	94,645
Benefit Reserves | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	446,853	449,968
Interest expense	94,935	92,508
Benefit Reserves | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Interest expense	0	0
Benefit Reserves | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	8,572	10,891
Interest expense	2,204	2,137
Deferred profit liability
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	133	182
Deferred profit liability | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	0	0
Deferred profit liability | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	0	0
Deferred profit liability | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	133	182
Additional insurance reserves
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	419,396	427,489
Interest expense	128,241	117,307
Additional insurance reserves | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Interest expense	0	0
Additional insurance reserves | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	419,396	427,489
Interest expense	128,241	117,307
Additional insurance reserves | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Interest expense	0	0
Deferred Profit Liability Netting
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	(221)	(539)
Deferred Profit Liability Netting | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Deferred Profit Liability Netting | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Deferred Profit Liability Netting | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	(221)	(539)
Revenues
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	874,600	887,809
Revenues | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	446,853	449,968
Revenues | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	419,396	427,489
Revenues | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	8,351	10,352
Interest Expense
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	225,513	212,134
Interest Expense | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	94,935	92,508
Interest Expense | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	128,241	117,307
Interest Expense | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	$ 2,337	$ 2,319