Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Investments:
Debt securities available-for-sale, at fair value (cost: $8,083,487 and $8,438,760)	$ 7,324,100	$ 7,611,633
Debt securities trading, at fair value (cost: $1,254,993 and $1,269,597)	1,069,625	1,065,993
Mortgage loans, net of allowance for credit losses ($3,736 and $3,575), ($19,422 and $19,334 at fair value)	495,411	505,730
Policy loans	69,123	70,495
Derivatives, index options	72,863	23,669
Equity securities, at fair value (cost: $13,986 and $14,547)	23,157	22,076
Other long-term investments	300,466	262,106
Short-term investments	7,821	3,937
Total investments	9,362,566	9,565,639
Cash and cash equivalents	291,820	295,270
Deferred policy acquisition costs (Note 1)	644,933	663,882
Deferred sales inducements (Note 1)	78,209	85,303
Value of business acquired (Note 1)	134,097	138,495
Cost of reinsurance (Note 1)	72,276	78,328
Market risk benefits asset (Note 1)	40,073	48,759
Accrued investment income	90,607	92,250
Federal income tax receivable	5,489	6,508
Deferred Federal income tax asset (Note 1)	13,822	9,032
Amounts recoverable from reinsurer, net of allowance for credit losses ($800 and $450) (Note 1)	1,611,143	1,688,788
Other assets	109,351	110,691
Total assets	12,454,386	12,782,945
Future policyholder obligations:
Liability for policyholder account balances (Note 1)	7,285,129	7,661,785
Additional liability for benefits in excess of account balance (Note 1)	151,787	148,708
Liability for future policy benefits (Note 1)	908,212	900,146
Market risk benefits liability (Note 1)	248,876	215,777
Other policyholder liabilities	148,113	175,089
Funds withheld liability	1,243,314	1,333,036
Other liabilities	190,755	157,482
Total liabilities	10,176,186	10,592,023
COMMITMENTS AND CONTINGENCIES (Note 11)
Common stock:
Additional paid-in capital	41,716	41,716
Accumulated other comprehensive income (loss) (Note 1)	(432,879)	(478,219)
Retained earnings (Note 1)	2,669,327	2,627,389
Total stockholders’ equity	2,278,200	2,190,922
Total liabilities and stockholders' equity	12,454,386	12,782,945
Class A (Note 4)
Common stock:
Common stock value	34	34
Class B (Note 4)
Common stock:
Common stock value	$ 2	$ 2