Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investments:
Debt securities held to maturity, at amortized cost, net of allowance for credit losses ($5,086 and $0; fair value: $7,378,399 and $7,407,703)	$ 6,822,053	$ 7,106,245
Debt securities available for sale, at fair value (cost: $3,156,486 and $3,206,120)	3,410,656	3,356,945
Mortgage loans, net of allowance for credit losses ($2,357 and $675)	302,715	272,422
Policy loans	75,714	80,008
Derivatives, index options	93,367	157,588
Equity securities, at fair value (cost: $15,157 and $16,894)	18,610	23,594
Other long-term investments	78,579	62,090
Total investments	10,801,694	11,058,892
Cash and cash equivalents	507,025	253,525
Deferred policy acquisition costs	633,349	723,972
Deferred sales inducements	86,104	104,359
Value of business acquired	132,426	138,071
Accrued investment income	93,330	93,298
Federal income tax receivable	802	0
Other assets	166,256	181,330
Total assets	12,420,986	12,553,447
Future policy benefits:
Universal life and annuity contracts (Note 1)	9,013,661	9,303,233
Traditional life reserves	848,515	838,738
Other policyholder liabilities	136,392	127,607
Deferred Federal income tax liability (Note 1)	53,055	36,767
Federal income tax payable	0	3,748
Other liabilities	154,133	126,924
Total liabilities	10,205,756	10,437,017
COMMITMENTS AND CONTINGENCIES (Note 8)
Common stock:
Additional paid-in capital	41,716	41,716
Accumulated other comprehensive income (loss)	104,764	60,108
Retained earnings (Note 1)	2,068,714	2,014,570
Total stockholders’ equity	2,215,230	2,116,430
Total liabilities and stockholders' equity	12,420,986	12,553,447
Class A
Common stock:
Common stock, value outstanding	34	34
Class B
Common stock:
Common stock, value outstanding	$ 2	$ 2