CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues
Net premiums earned	$ 1,104,003	$ 1,123,607	$ 2,192,628	$ 2,257,819
Net investment income	45,040	137,949	138,140	245,254
Other insurance related income (loss)	1,996	2,925	(6,710)	9,852
Net investment gains (losses):
Allowance for expected credit losses	13,761	0	(6,257)	0
Impairment losses	(112)	0	(1,302)	0
Other-than-temporary impairment ("OTTI") losses	0	(834)	0	(4,870)
Other realized and unrealized investment gains (losses)	39,394	22,059	(2,272)	38,866
Total net investment gains (losses)	53,043	21,225	(9,831)	33,996
Total revenues	1,204,082	1,285,706	2,314,227	2,546,921
Expenses
Net losses and loss expenses	676,261	672,463	1,584,335	1,336,491
Acquisition costs	228,502	242,363	467,152	502,781
General and administrative expenses	140,652	165,395	297,712	340,486
Foreign exchange losses (gains)	9,709	(12,381)	(51,974)	(5,325)
Interest expense and financing costs	20,595	15,607	44,067	31,502
Reorganization expenses	392	3,276	(591)	18,096
Amortization of value of business acquired	1,285	7,194	3,083	20,298
Amortization of intangible assets	2,855	2,912	5,725	5,914
Total expenses	1,080,251	1,096,829	2,349,509	2,250,243
Income (loss) before income taxes and interest in income (loss) of equity method investments	123,831	188,877	(35,282)	296,678
Income tax expense	(10,893)	(14,469)	(6,026)	(15,703)
Interest in income (loss) of equity method investments	7,102	2,635	(16,475)	4,853
Net income (loss)	120,040	177,043	(57,783)	285,828
Preferred share dividends	7,563	10,656	15,125	21,313
Net income (loss) available (attributable) to common shareholders	$ 112,477	$ 166,387	$ (72,908)	$ 264,515
Earnings (loss) per common share:
Earnings (loss) per common share (in usd per share)	$ 1.33	$ 1.98	$ (0.87)	$ 3.16
Earnings (loss) per diluted common share (in usd per share)	$ 1.33	$ 1.97	$ (0.87)	$ 3.14
Weighted average common shares outstanding (in shares)	84,303	83,941	84,198	83,834
Weighted average diluted common shares outstanding (in shares)	84,600	84,401	84,198	84,338