CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Premiums written:
Direct	$ 280,229	$ 287,918	$ 824,989	$ 828,986
Assumed	(3,020)	(91)	(843)	1,882
Ceded	(25,326)	(31,931)	(79,921)	(92,436)
Net premiums written	251,883	255,896	744,225	738,432
Increase in unearned premiums, net	(1,457)	(18,813)	(14,728)	(41,110)
Net premiums earned	250,426	237,083	729,497	697,322
Investment income, net of expenses	36,380	30,402	103,003	89,595
Net realized investment gains (losses)	1,114	(50)	(1,112)	(227)
Other revenue	2,525	2,925	6,827	7,862
Total revenues	290,445	270,360	838,215	794,552
Losses and expenses:
Losses incurred, net	(1,518)	29,747	8,877	84,705
Amortization of deferred policy acquisition costs	3,156	2,985	8,573	7,799
Other underwriting and operating expenses, net	43,655	39,888	131,587	119,164
Interest expense	13,258	13,273	39,737	43,779
Loss on debt extinguishment	0	0	0	65
Total losses and expenses	58,551	85,893	188,774	255,512
Income before tax	231,894	184,467	649,441	539,040
Provision for income taxes	49,994	64,440	137,090	210,593
Net income	$ 181,900	$ 120,027	$ 512,351	$ 328,447
Earnings per share:
Basic (in dollars per share)	$ 0.50	$ 0.32	$ 1.40	$ 0.91
Diluted (in dollars per share)	$ 0.49	$ 0.32	$ 1.36	$ 0.86
Weighted average common shares outstanding - basic (in shares)	362,180	370,586	367,190	359,613
Weighted average common shares outstanding - diluted (in shares)	382,905	391,087	387,765	395,870