CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Premiums written:
Direct	$ 265,412	$ 244,189
Assumed	338	451
Ceded (note 4)	(31,294)	(26,620)
Net premiums written	234,456	218,020
Increase in unearned premiums, net	(17,168)	(3,759)
Net premiums earned	217,288	214,261
Investment income, net of expenses	24,120	20,156
Net realized investment gains (losses):
Total other-than-temporary impairment losses	0	0
Portion of losses recognized in comprehensive income, before taxes	0	0
Net impairment losses recognized in earnings	0	0
Other realized investment gains (losses)	26,327	(231)
Net realized investment gains (losses)	26,327	(231)
Other revenue	2,480	896
Total revenues	270,215	235,082
Losses and expenses:
Losses incurred, net (note 12)	81,785	122,608
Change in premium deficiency reserve (note 13)	(6,418)	(5,173)
Amortization of deferred policy acquisition costs	1,757	1,419
Other underwriting and operating expenses, net	39,268	37,981
Interest expense	17,362	17,539
Total losses and expenses	133,754	174,374
Income before tax	136,461	60,708
Provision for income taxes (note 11)	3,385	726
Net income	$ 133,076	$ 59,982
Income per share (note 6)
Basic (in dollars per share)	$ 0.39	$ 0.18
Diluted (in dollars per share)	$ 0.32	$ 0.15
Weighted average common shares outstanding - basic (note 6) (in shares)	339,107	338,213
Weighted average common shares outstanding - diluted (note 6) (in shares)	468,141	413,180