Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments:
Fixed maturities—available for sale, at fair value (amortized cost: 2020—$16,371,944; 2019—$16,415,776, allowance for credit losses: 2020— $31,854; 2019— $0)	$ 17,879,541	$ 18,907,147
Policy loans	579,133	575,492
Other long-term investments (includes: 2020—$211,791; 2019—$185,851 under the fair value option)	377,239	326,347
Short-term investments	272,601	38,285
Total investments	19,108,514	19,847,271
Cash	90,370	75,933
Accrued investment income	258,437	245,129
Other receivables	441,740	441,662
Deferred acquisition costs	4,386,478	4,341,941
Goodwill	441,591	441,591
Other assets	624,784	583,933
Total assets	25,351,914	25,977,460
Liabilities:
Future policy benefits	14,617,072	14,508,134
Unearned and advance premium	67,868	63,709
Policy claims and other benefits payable	364,276	365,402
Other policyholders' funds	96,525	96,282
Total policy liabilities	15,145,741	15,033,527
Current and deferred income taxes	1,295,024	1,476,832
Short-term debt	458,127	298,738
Long-term debt (estimated fair value: 2020—$1,386,511; 2019—$1,473,364)	1,346,795	1,348,988
Other liabilities	585,945	525,068
Total liabilities	18,831,632	18,683,153
Commitments and Contingencies (Note 5)
Shareholders' equity:
Preferred stock, par value $1 per share—5,000,000 shares authorized; outstanding: 0 in 2020 and 2019	0	0
Common stock, par value $1 per share—320,000,000 shares authorized; outstanding: (2020—117,218,183 issued; 2019— 117,218,183 issued)	117,218	117,218
Additional paid-in-capital	519,428	531,554
Accumulated other comprehensive income (loss)	1,066,247	1,844,830
Retained earnings	5,686,431	5,551,329
Treasury stock, at cost: (2020—10,783,915 shares; 2019—9,497,940 shares)	(869,042)	(750,624)
Total shareholders' equity	6,520,282	7,294,307
Total liabilities and shareholders' equity	$ 25,351,914	$ 25,977,460