CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Investments:
Fixed maturities, available for sale, at fair value (Amortized cost 2021: $11,638,359; 2020: $11,566,930 Allowance for expected credit losses 2021: $84; 2020: $323)	$ 11,898,300	$ 12,041,799
Fixed maturities, held to maturity, at amortized cost (Fair value 2021: $403,034 Allowance for expected credit losses 2021: $nil)	403,370	0
Equity securities, at fair value (Cost 2021: $472,214; 2020: $421,744)	588,196	518,445
Mortgage loans, held for investment, at fair value (Allowance for expected credit losses 2021: $nil; 2020: $nil)	656,056	593,290
Other investments, at fair value	865,238	829,156
Equity method investments	133,169	114,209
Short-term investments, at fair value	112,862	161,897
Total investments	14,657,191	14,258,796
Cash and cash equivalents	999,899	902,831
Restricted cash and cash equivalents	589,544	600,401
Accrued interest receivable	63,215	65,020
Insurance and reinsurance premium balances receivable (Allowance for expected credit losses 2021: $9,898; 2020: $8,836)	3,393,777	2,738,342
Reinsurance recoverable on unpaid losses and loss expenses (Allowance for expected credit losses 2021: $26,209; 2020: $23,711)	4,626,454	4,496,641
Reinsurance recoverable on paid losses and loss expenses	467,180	434,201
Deferred acquisition costs	574,658	431,439
Prepaid reinsurance premiums	1,479,328	1,194,455
Receivable for investments sold	3,671	2,150
Goodwill	100,801	100,801
Intangible assets	214,286	219,633
Value of business acquired	1,798	3,854
Operating lease right-of-use assets	112,444	123,579
Other assets	297,484	305,544
Total assets	27,581,730	25,877,687
Liabilities
Reserve for losses and loss expenses	14,157,353	13,926,766
Unearned premiums	4,698,944	3,685,886
Insurance and reinsurance balances payable	1,409,772	1,092,042
Debt	1,310,328	1,309,695
Payable for investments purchased	205,895	104,777
Operating lease liabilities	130,174	140,263
Other liabilities	279,504	322,564
Total liabilities	22,191,970	20,581,993
Shareholders’ equity
Preferred shares	550,000	550,000
Common shares (shares issued 2021: 176,580; 2020: 176,580 shares outstanding 2021: 84,767; 2020: 84,353)	2,206	2,206
Additional paid-in capital	2,326,288	2,330,054
Accumulated other comprehensive income	226,317	414,395
Retained earnings	6,034,151	5,763,607
Treasury shares, at cost (2021: 91,813; 2020: 92,227)	(3,749,202)	(3,764,568)
Total shareholders’ equity	5,389,760	5,295,694
Total liabilities and shareholders’ equity	$ 27,581,730	$ 25,877,687