Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Net premiums earned	$ 122,853	$ 109,659
Net investment income	5,306	7,236
Commissions and other income	1,858	1,663
Net realized gains (losses) on investments, excluding impairment losses	2,339	(4,787)
Impairment losses on investments	(82)	(40)
Net unrealized gains (losses) on equity securities and limited partnership investments	8,252	(22,929)
Net realized and unrealized gains (losses) on investments	10,509	(27,756)
Total revenues	140,526	90,802
Expenses
Losses and loss expenses incurred	82,318	81,831
Other operating expenses	41,855	34,110
Total expenses	124,173	115,941
Income (loss) before federal income tax expense (benefit)	16,353	(25,139)
Federal income tax expense (benefit)	3,415	(2,983)
Net income (loss)	$ 12,938	$ (22,156)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.91	$ (1.56)
Diluted (in dollars per share)	$ 0.90	$ (1.56)
Weighted average number of shares outstanding:
Basic (in shares)	14,153	14,169
Dilutive effect of share equivalents (in shares)	154
Diluted (in shares)	14,307	14,169