Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Net premiums earned	$ 245,167	$ 236,444
Investment income, net of investment expenses	13,492	12,585
Net realized investment gains (losses) (includes reclassifications for net unrealized investment gains on available-for-sale securities of $37 in 2018 and $3,405 in 2017; previously included in accumulated other comprehensive income)	(7,864)	2,249
Total revenues	250,795	251,278
Benefits, Losses and Expenses
Losses and loss settlement expenses	144,728	156,552
Amortization of deferred policy acquisition costs	49,639	50,461
Other underwriting expenses (includes reclassifications for employee benefit costs of $1,660 in 2018 and $1,352 in 2017; previously included in accumulated other comprehensive income)	34,855	21,259
Total benefits, losses and expenses	229,222	228,272
Income from continuing operations before income taxes	21,573	23,006
Federal income tax expense (includes reclassifications of $341 in 2018 and ($718) in 2017; previously included in accumulated other comprehensive income)	1,209	4,422
Income from continuing operations	20,364	18,584
Income (loss) from discontinued operations, net of taxes	(1,912)	1,352
Gain on sale of discontinued operations, net of taxes	27,307	0
Net income	45,759	19,936
Other comprehensive income
Change in net unrealized appreciation on investments	(51,814)	14,966
Change in liability for underfunded employee benefit plans	0	0
Other comprehensive income, before tax and reclassification adjustments	(51,814)	14,966
Income tax effect	10,881	(5,238)
Other comprehensive income, after tax, before reclassification adjustments	(40,933)	9,728
Reclassification adjustment for net realized investment gains included in income	(37)	(3,405)
Reclassification adjustment for employee benefit costs included in expense	1,660	1,352
Total reclassification adjustments, before tax	1,623	(2,053)
Income tax effect	(341)	718
Total reclassification adjustments, after tax	1,282	(1,335)
Comprehensive income	$ 6,108	$ 28,329
Diluted weighted average common shares outstanding (in shares)	25,458,090	25,854,181
Earnings per common share from continuing operations:
Basic (in dollars per share)	$ 0.82	$ 0.73
Diluted (in dollars per share)	0.80	0.72
Earnings per common share:
Basic (in dollars per share)	1.84	0.78
Diluted (in dollars per share)	$ 1.80	$ 0.77