Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Net premiums earned	$ 187,159,000	$ 182,903,000
Net investment income	22,027,000	23,186,000
Equity in earnings (loss) of unconsolidated subsidiaries	1,640,000	1,808,000
Net realized investment gains (losses):
OTTI losses	0	(419,000)
Portion of OTTI losses recognized in other comprehensive income before taxes	0	248,000
Net impairment losses recognized in earnings	0	(171,000)
Other net realized investment gains (losses)	(12,517,000)	13,451,000
Total net realized investment gains (losses)	(12,517,000)	13,280,000
Other income	2,723,000	1,821,000
Total revenues	201,032,000	222,998,000
Expenses
Net losses and loss adjustment expenses	129,786,000	119,151,000
Underwriting, policy acquisition and operating expenses
Operating expense	32,467,000	34,482,000
DPAC amortization	24,893,000	22,626,000
Segregated portfolio cells dividend expense (income)	1,747,000	2,375,000
Interest expense	3,705,000	4,133,000
Total expenses	192,598,000	182,767,000
Income before income taxes	8,434,000	40,231,000
Provision for income taxes
Current expense (benefit)	(1,328,000)	(8,278,000)
Deferred expense (benefit)	(2,094,000)	7,054,000
Total income tax expense (benefit)	(3,422,000)	(1,224,000)
Net income	11,856,000	41,455,000
Other comprehensive income (loss), after tax, net of reclassification adjustments	(26,373,000)	2,924,000
Comprehensive income (loss)	$ (14,517,000)	$ 44,379,000
Earnings per share
Basic (USD per share)	$ 0.22	$ 0.78
Diluted (USD per share)	$ 0.22	$ 0.77
Weighted average number of common shares outstanding:
Basic (in shares)	53,515	53,315
Diluted (in shares)	53,682	53,535
Cash dividends declared per common share (USD per share)	$ 0.310	$ 0.31