Consolidated Statements Of Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Earned premium	$ 353,987	$ 341,368
Percent change, Earned premium	3.70%
Installment and other fee income	$ 27,395	26,739
Percent change, Installment and other fee income	2.50%
Net investment income	$ 9,786	8,695
Percent change, Net investment Income	12.50%
Total net realized (losses) gains on investments	$ (2,832)	509
Percent change, Net realized gains on investments	(656.20%)
Other income	$ 430	275
Percent change, Other income	56.30%
Total revenues	$ 388,766	377,587
Percent change, Total revenues	3.00%
Costs and Expenses:
Losses and loss adjustment expenses	$ 264,552	270,676
Percent change, Losses and loss adjustment expenses	(2.30%)
Commissions and other underwriting expenses	$ 90,521	85,939
Percent change, Commissions and other underwriting expenses	5.30%
Interest expense	$ 3,509	3,512
Percent change, Interest expense	(0.10%)
Corporate general and administrative expenses	$ 4,743	2,271
Percent change, Corporate general and administrative expenses	108.90%
Other expenses	$ 505	322
Percent change, Other expenses	56.90%
Total costs and expenses	$ 363,829	362,719
Percent change, Total costs and expenses	0.30%
Earnings before income taxes	$ 24,937	14,868
Percent change, Earnings before income taxes	67.70%
Provision for income taxes	$ 4,853	4,358
Percent change, Provision for income taxes	11.40%
Net Earnings	$ 20,083	$ 10,510
Percent change, Net Earnings	91.10%
Net Earnings per Common Share:
Basic (usd per share)	$ 1.84	$ 0.96
Percent change, Basic	91.70%
Diluted (usd per share)	$ 1.82	$ 0.94
Percent change, Diluted	93.60%
Average Number of Common Shares:
Basic (shares)	10,915	10,998
Percent change, Basic	(0.80%)
Diluted (shares)	11,009	11,127
Percent change, Diluted	(1.10%)
Cash Dividends per Common Share (usd per share)	$ 0.58	$ 0.58
Percent change, Cash Dividends per Common Share	0.00%
Net realized gains on sales	$ 1,363	$ 519
Trading Securities, Change in Unrealized Holding Gain (Loss)	(2,607)	0
Total other-than-temporary impairment (OTTI) losses	(1,468)	(46)
Non-credit portion in other comprehensive income	$ 158	36
Non-credit portion in other comprehensive income, percent	341.90%
OTTI losses reclassified from other comprehensive income	$ (278)	0
Net impairment losses recognized in earnings	1,588	10
Total net realized (losses) gains on investments	$ (2,832)	$ 509
Percent change, Total net realized gains on investments	(656.20%)

INFINITY PROPERTY & CASUALTY CORP 10-Q