Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Investments:
Fixed maturities—available for sale, at fair value (amortized cost: 2019—$15,988,228; 2018—$15,753,471)	$ 17,223,585	$ 16,297,932
Policy loans	555,456	550,066
Other long-term investments (includes: 2019—$118,556; 2018—$108,241 under the fair value option)	231,934	207,258
Short-term investments	125,759	63,288
Total investments	18,136,734	17,118,544
Cash	67,342	121,026
Accrued investment income	255,148	243,003
Other receivables	419,610	415,157
Deferred acquisition costs	4,185,231	4,137,925
Goodwill	441,591	441,591
Other assets	559,225	549,899
Assets related to discontinued operations	68,557	68,577
Total assets	24,133,438	23,095,722
Liabilities:
Future policy benefits	14,084,082	13,953,826
Unearned and advance premiums	66,924	61,208
Policy claims and other benefits payable	357,294	350,826
Other policyholders' funds	96,986	97,459
Total policy liabilities	14,605,286	14,463,319
Current and deferred income taxes payable	1,225,497	1,047,737
Other liabilities	557,824	453,270
Short-term debt	294,378	307,848
Long-term debt (estimated fair value: 2019—$1,458,751; 2018—$1,384,455)	1,355,601	1,357,185
Liabilities related to discontinued operations	51,426	51,186
Total liabilities	18,090,012	17,680,545
Commitments and Contingencies (Note 5)
Shareholders’ equity:
Preferred stock, par value $1 per share—5,000,000 shares authorized; outstanding: 0 in 2019 and 2018	0	0
Common stock, par value $1 per share—320,000,000 shares authorized; outstanding: (2019—121,218,183 issued; 2018—121,218,183 issued)	121,218	121,218
Additional paid-in capital	518,529	524,414
Accumulated other comprehensive income (loss)	870,067	319,475
Retained earnings	5,364,820	5,213,468
Treasury stock, at cost: (2019—11,292,000 shares; 2018—10,525,147 shares)	(831,208)	(763,398)
Total shareholders’ equity	6,043,426	5,415,177
Total liabilities and shareholders’ equity	$ 24,133,438	$ 23,095,722