Federal Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Net loss reserve discounting	$ 65,907	$ 60,227
Net unearned premiums	76,513	68,086
Employee benefits	7,064	2,787
Long-term incentive compensation plans	6,384	5,904
Unrealized losses on AFS securities	110,857	0
Temporary investment write-downs	12,480	4,314
Other	9,824	2,245
Total deferred tax assets	289,029	143,563
Deferred policy acquisition costs	77,411	68,652
Unrealized gains on investment securities	0	48,082
Other investment-related items, net	26,713	27,044
Accelerated depreciation and amortization	12,172	13,198
Deferred Tax Liabilities, Total	116,296	156,976
Deferred federal income tax	(172,733)	0
Net deferred federal income tax	0	(13,413)
Deferred tax liability
Net deferred federal income tax	$ (172,733)	$ (13,413)

The tax effect as of the balance sheet date of the amount of the estimated future tax deductions, before any related valuation allowance, arising from unrealized losses on securities which can only be deducted for tax purposes when the losses are realized, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken.

No definition available.