CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Investments:
Fixed maturities, available for sale, at fair value (Amortized cost 2019: $12,407,704; 2018: $11,616,312)	$ 12,616,241	$ 11,435,347
Equity securities, at fair value (Cost 2019: $380,645; 2018: $365,905)	429,903	381,633
Mortgage loans, held for investment, at fair value	407,790	298,650
Other investments, at fair value	779,200	787,787
Equity method investments	113,748	108,103
Short-term investments, at fair value	12,539	144,040
Total investments	14,359,421	13,155,560
Cash and cash equivalents	763,825	1,232,814
Restricted cash and cash equivalents	444,726	597,206
Accrued interest receivable	81,371	80,335
Insurance and reinsurance premium balances receivable	3,322,316	3,007,296
Reinsurance recoverable on unpaid losses and loss expenses	3,705,793	3,501,669
Reinsurance recoverable on paid losses and loss expenses	252,087	280,233
Deferred acquisition costs	586,440	566,622
Prepaid reinsurance premiums	1,243,040	1,013,573
Receivable for investments sold	9,711	32,627
Goodwill	102,003	102,003
Intangible assets	233,305	241,568
Value of business acquired	11,048	35,714
Operating lease right-of-use assets	116,560	0
Other assets	263,880	285,346
Total assets	25,495,526	24,132,566
Liabilities
Reserve for losses and loss expenses	12,498,507	12,280,769
Unearned premiums	4,153,003	3,635,758
Insurance and reinsurance balances payable	1,276,123	1,338,991
Senior notes	1,388,135	1,341,961
Payable for investments purchased	89,805	111,838
Operating lease liabilities	115,887	0
Other liabilities	388,196	393,178
Total liabilities	19,909,656	19,102,495
Shareholders’ equity
Preferred shares	775,000	775,000
Common shares (shares issued 2019: 176,580; 2018: 176,580 shares outstanding 2019: 83,947; 2018: 83,586)	2,206	2,206
Additional paid-in capital	2,309,483	2,308,583
Accumulated other comprehensive income (loss)	176,296	(177,110)
Retained earnings	6,101,902	5,912,812
Treasury shares, at cost (2019: 92,633; 2018: 92,994 shares)	(3,779,017)	(3,791,420)
Total shareholders’ equity	5,585,870	5,030,071
Total liabilities and shareholders’ equity	$ 25,495,526	$ 24,132,566