Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Investments:
Fixed maturities—available for sale, at fair value (amortized cost: 2019—$15,984,272; 2018—$15,753,471)	$ 17,934,274	$ 16,297,932
Policy loans	560,469	550,066
Other long-term investments (includes: 2019—$165,426; 2018—$108,241 under the fair value option)	289,147	207,258
Short-term investments	74,116	63,288
Total investments	18,858,006	17,118,544
Cash	89,319	121,026
Accrued investment income	247,383	243,003
Other receivables	425,372	415,157
Deferred acquisition costs	4,232,717	4,137,925
Goodwill	441,591	441,591
Other assets	561,057	549,899
Assets related to discontinued operations	0	68,577
Total assets	24,855,445	23,095,722
Liabilities:
Future policy benefits	14,218,030	13,953,826
Unearned and advance premium	66,892	61,208
Policy claims and other benefits payable	351,347	350,826
Other policyholders' funds	95,753	97,459
Total policy liabilities	14,732,022	14,463,319
Current and deferred income taxes	1,351,495	1,047,737
Short-term debt	257,453	307,848
Long-term debt (estimated fair value: 2019—$1,446,082; 2018—$1,384,455)	1,353,395	1,357,185
Other liabilities	460,682	453,270
Liabilities related to discontinued operations	0	51,186
Total liabilities	18,155,047	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	526,518	524,414
Accumulated other comprehensive income (loss)	1,439,250	319,475
Retained earnings	5,514,517	5,213,468
Treasury stock, at cost: (2019—11,995,233 shares; 2018—10,525,147 shares)	(901,105)	(763,398)
Total shareholders' equity	6,700,398	5,415,177
Total liabilities and shareholders' equity	$ 24,855,445	$ 23,095,722