Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly financial data

The following is a summary of the unaudited quarterly financial data for 2013 and 2012:

(U.S. dollars in thousands, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2013
Net premiums earned – P&C operations	$	1,464,246	$	1,488,497	$	1,550,629	$	1,510,727
Net premiums earned – Life operations	$	65,445	$	73,896	$	74,683	$	81,398
Underwriting profit (loss) – P&C operations	$	180,588	$	92,124	$	76,900	$	101,450
Net income (loss) attributable to ordinary shareholders	$	350,790	$	272,698	$	135,648	$	300,780
Net income (loss) per ordinary share and ordinary equivalent – basic	$	1.19	$	0.94	$	0.48	$	1.07
Net income (loss) per ordinary share and ordinary equivalent – diluted	$	1.17	$	0.93	$	0.47	$	1.05
2012
Net premiums earned – P&C operations	$	1,357,897	$	1,400,970	$	1,468,554	$	1,538,557
Net premiums earned – Life operations	$	78,520	$	85,623	$	79,487	$	80,829
Underwriting profit (loss) – P&C operations	$	63,238	$	129,372	$	114,203	$	(90,681	)
Net income (loss) attributable to ordinary shareholders	$	176,628	$	221,154	$	171,902	$	81,444
Net income (loss) per ordinary share and ordinary equivalent – basic	$	0.56	$	0.71	$	0.57	$	0.27
Net income (loss) per ordinary share and ordinary equivalent – diluted	$	0.56	$	0.71	$	0.56	$	0.27