Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Gross written premiums	$ 298,116	$ 224,179
Ceded written premiums	(87,138)	(66,269)
Net written premiums	210,978	157,910
Change in net unearned premiums	(10,036)	(3,223)
Net earned premiums	200,942	154,687
Net investment income	13,256	16,733
Net realized and unrealized (losses) gains on investments	(810)	1,047
Other income	4,956	3,935
Total revenues	218,344	176,402
Expenses
Losses and loss adjustment expenses	143,772	105,369
Other operating expenses	54,783	48,893
Other expenses	4	(114)
Interest expense	2,522	2,123
Amortization of intangible assets	149	149
Total expenses	201,230	156,420
Income before taxes	17,114	19,982
Income tax expense	1,481	1,532
Net income	15,633	18,450
Other comprehensive (loss) income:
Net unrealized (losses) gains, net of taxes of $(544) in 2018 and $1,514 in 2017	(18,547)	4,034
Total comprehensive (loss) income	$ (2,914)	$ 22,484
Per share data:
Basic earnings per share (in dollars per share)	$ 0.53	$ 0.63
Diluted earnings per share (in dollars per share)	0.52	0.61
Dividend declared per share (in dollars per share)	$ 0.30	$ 0.30
Weighted-average common shares outstanding:
Basic (in shares)	29,764,320	29,289,588
Diluted (in shares)	30,193,303	30,327,423