Liability For Future Policy Benefits (Revenue and Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Benefit Reserves
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	$ 453,746	$ 455,425
Interest expense	99,329	97,139
Benefit Reserves | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	441,000	446,853
Interest expense	96,837	94,935
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	12,746	8,572
Interest expense	2,492	2,204
Deferred profit liability
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	234	133
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	234	133
Additional insurance reserves
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	458,049	419,396
Interest expense	142,506	128,241
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	458,049	419,396
Interest expense	142,506	128,241
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	(452)	(221)
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	(452)	(221)
Revenues
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	911,343	874,600
Revenues | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	441,000	446,853
Revenues | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	458,049	419,396
Revenues | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	12,294	8,351
Interest Expense
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	242,069	225,513
Interest Expense | Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	96,837	94,935
Interest Expense | Variable/Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	142,506	128,241
Interest Expense | Fixed Annuities
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	$ 2,726	$ 2,337