CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Premiums written:
Direct	$ 287,918,000	$ 283,618,000	$ 828,986,000	$ 831,022,000
Assumed	(91,000)	152,000	1,882,000	542,000
Ceded	(31,931,000)	(33,446,000)	(92,436,000)	(99,944,000)
Net premiums written	255,896,000	250,324,000	738,432,000	731,620,000
Increase in unearned premiums, net	(18,813,000)	(12,948,000)	(41,110,000)	(41,447,000)
Net premiums earned	237,083,000	237,376,000	697,322,000	690,173,000
Investment income, net of expenses	30,402,000	27,515,000	89,595,000	82,572,000
Net realized investment (losses) gains	(47,000)	5,092,000	(211,000)	8,984,000
Other revenue	2,922,000	3,867,000	7,846,000	14,234,000
Total revenues	270,360,000	273,850,000	794,552,000	795,963,000
Losses and expenses:
Losses incurred, net	29,747,000	60,897,000	84,705,000	192,499,000
Amortization of deferred policy acquisition costs	2,985,000	2,575,000	7,799,000	6,781,000
Other underwriting and operating expenses, net	39,888,000	37,870,000	119,164,000	112,995,000
Interest expense	13,273,000	13,536,000	43,779,000	40,481,000
Loss on debt extinguishment	0	75,223,000	65,000	90,531,000
Total losses and expenses	85,893,000	190,101,000	255,512,000	443,287,000
Income before tax	184,467,000	83,749,000	539,040,000	352,676,000
Provision for income taxes	64,440,000	27,131,000	210,593,000	117,646,000
Net income	$ 120,027,000	$ 56,618,000	$ 328,447,000	$ 235,030,000
Earnings per share:
Basic (in dollars per share)	$ 0.32	$ 0.16	$ 0.91	$ 0.68
Diluted (in dollars per share)	$ 0.32	$ 0.14	$ 0.86	$ 0.58
Weighted average common shares outstanding - basic (in shares)	370,586	349,376	359,613	343,403
Weighted average common shares outstanding - diluted (in shares)	391,087	406,050	395,870	421,423