Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments:
Debt securities held to maturity, at amortized cost, net of allowance for credit losses ($6,039 and $0; fair value: $7,181,687 and $7,407,703)	$ 6,990,041	$ 7,106,245
Debt securities available for sale, at fair value (cost: $3,206,357 and $3,206,120)	3,174,260	3,356,945
Mortgage loans, net of allowance for credit losses ($1,885 and $675)	276,083	272,422
Policy loans	78,036	80,008
Derivatives, index options	24,335	157,588
Equity securities, at fair value (cost: $15,246 and $16,894)	15,984	23,594
Other long-term investments	66,152	62,090
Total investments	10,624,891	11,058,892
Cash and cash equivalents	352,215	253,525
Deferred policy acquisition costs	782,904	723,972
Deferred sales inducements	114,171	104,359
Value of business acquired	135,879	138,071
Accrued investment income	95,780	93,298
Federal income tax receivable	13,282	0
Other assets	165,300	181,330
Total assets	12,284,422	12,553,447
Future policy benefits:
Universal life and annuity contracts (Note 1)	9,125,612	9,303,233
Traditional life reserves	842,551	838,738
Other policyholder liabilities	134,579	127,607
Deferred Federal income tax liability (Note 1)	30,438	36,767
Federal income tax payable	0	3,748
Other liabilities	120,764	126,924
Total liabilities	10,253,944	10,437,017
COMMITMENTS AND CONTINGENCIES (Note 8)
Common stock:
Additional paid-in capital	41,716	41,716
Accumulated other comprehensive income (loss)	(20,750)	60,108
Retained earnings (Note 1)	2,009,476	2,014,570
Total stockholders’ equity	2,030,478	2,116,430
Total liabilities and stockholders' equity	12,284,422	12,553,447
Class A
Common stock:
Common stock, value outstanding	34	34
Class B
Common stock:
Common stock, value outstanding	$ 2	$ 2