10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

xQuarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2018

OR

o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from              to             

Commission File No. 0-50167

INFINITY PROPERTY AND CASUALTY CORPORATION

(Exact name of registrant as specified in its charter)

Ohio	03-0483872
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

2201 4th Avenue North, Birmingham, Alabama 35203

(Address of principal executive offices and zip code)

(205) 870-4000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes x   No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x   No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	o  (Do not check if smaller reporting company)	Smaller reporting company	¨
Emerging growth company	o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ¨

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

As of April 26, 2018, there were 10,941,936 shares of the registrant’s common stock outstanding.

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

TABLE OF CONTENTS

		Page
	PART I – FINANCIAL INFORMATION
Item 1	Financial Statements
	Consolidated Statements of Earnings	3
	Consolidated Statements of Comprehensive Income	4
	Consolidated Balance Sheets	5
	Consolidated Statements of Changes in Shareholders’ Equity	6
	Consolidated Statements of Cash Flows	7
	Condensed Notes to Consolidated Financial Statements	8
Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	29
Item 3	Quantitative and Qualitative Disclosures About Market Risk	38
Item 4	Controls and Procedures	38
PART II – OTHER INFORMATION
Item 1	Legal Proceedings	38
Item 1A	Risk Factors	38
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	39
Item 6	Exhibits	39
	Signature	40

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

PART I

FINANCIAL INFORMATION

ITEM 1

Financial Statements

INFINITY PROPERTY AND CASUALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EARNINGS

(in thousands, except per share data)

(unaudited)

	Three months ended
	March 31,
	2018			2017			% Change
				(as adjusted)
Revenues:
Earned premium	$	353,987		$	341,368		3.7	%
Installment and other fee income	27,395			26,739			2.5	%
Net investment income	9,786			8,695			12.5	%
Net realized (losses) gains on investments (1)	(2,832		)	509			(656.2	)%
Other income	430			275			56.3	%
Total revenues	388,766			377,587			3.0	%
Costs and Expenses:
Losses and loss adjustment expenses	264,552			270,676			(2.3	)%
Commissions and other underwriting expenses	90,521			85,939			5.3	%
Interest expense	3,509			3,512			(0.1	)%
Corporate general and administrative expenses	4,743			2,271			108.9	%
Other expenses	505			322			56.9	%
Total costs and expenses	363,829			362,719			0.3	%
Earnings before income taxes	24,937			14,868			67.7	%
Provision for income taxes	4,853			4,358			11.4	%
Net Earnings	$	20,083		$	10,510		91.1	%
Net Earnings per Common Share:
Basic	$	1.84		$	0.96		91.7	%
Diluted	1.82			0.94			93.6	%
Average Number of Common Shares:
Basic	10,915			10,998			(0.8	)%
Diluted	11,009			11,127			(1.1	)%
Cash Dividends per Common Share	$	0.58		$	0.58		0.0	%
(1) Net realized gains on sales	$	1,363		$	519		162.6	%
Net holding period losses on equity securities	(2,607		)	0			NM
Total other-than-temporary impairment (OTTI) losses	(1,468		)	(46		)	NM
Non-credit portion in other comprehensive income	158			36			341.9	%
OTTI losses reclassified from other comprehensive income	(278		)	0			NM
Net impairment losses recognized in earnings	(1,588		)	(10		)	NM
Total net realized (losses) gains on investments	$	(2,832	)	$	509		(656.2	)%

NM = Not Meaningful

See Condensed Notes to Consolidated Financial Statements.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

INFINITY PROPERTY AND CASUALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

($ in thousands)

(unaudited)

	Three months ended
	March 31,
	2018			2017
				(as adjusted)
Net earnings	$	20,083		$	10,510
Other comprehensive income before tax:
Net change in post-retirement benefit liability	(2		)	(13		)
Unrealized gains on investments(1):
Unrealized holding (losses) gains arising during the period	(18,344		)	10,664
Less: Reclassification adjustments for losses (gains) included in net earnings	2,106			(509		)
Unrealized (losses) gains on investments, net	(16,238		)	10,155
Other comprehensive (loss) income, before tax	(16,240		)	10,143
Income tax benefit (expense) related to components of other comprehensive income	3,410			(3,550		)
Other comprehensive (loss) income, net of tax	(12,829		)	6,593
Comprehensive income	$	7,254		$	17,102
(1) The amounts for 2018 are for fixed maturities only.

See Condensed Notes to Consolidated Financial Statements.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

INFINITY PROPERTY AND CASUALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands, except share amounts in line descriptions)

	March 31, 2018			December 31, 2017
	(unaudited)			(as adjusted)
Assets
Investments:
Fixed maturities – at fair value (amortized cost $1,512,939 and $1,439,878)	$	1,497,930		$	1,441,107
Equity securities – at fair value (cost $65,913 and $68,812)	90,498			96,004
Short-term investments – at fair value (amortized cost $0 and $2,541)	0			2,541
Total investments	1,588,428			1,539,653
Cash and cash equivalents	88,793			107,589
Accrued investment income	10,098			13,079
Agents’ balances and premium receivable, net of allowances for doubtful accounts of $13,238 and $15,262	557,206			507,963
Property and equipment, net of accumulated depreciation of $87,945 and $84,776	78,732			82,453
Prepaid reinsurance premium	482			1,032
Recoverables from reinsurers (includes $3,124 and $(1,269) on paid losses and LAE)	22,674			30,340
Deferred policy acquisition costs	98,672			88,300
Current and deferred income taxes	9,091			10,543
Receivable for securities sold	120			1,700
Other assets	21,896			16,557
Goodwill	75,275			75,275
Total assets	$	2,551,466		$	2,474,484
Liabilities and Shareholders’ Equity
Liabilities:
Unpaid losses and loss adjustment expenses	$	701,006		$	715,098
Unearned premium	691,464			627,575
Long-term debt (fair value $286,330 and $290,824)	273,865			273,809
Commissions payable	15,844			16,743
Payable for securities purchased	40,375			5,615
Other liabilities	110,996			119,831
Total liabilities	1,833,550			1,758,672
Commitments and contingencies (See Note 9)
Shareholders’ equity:
Common stock, no par value (50,000,000 shares authorized; 21,879,505 and 21,867,436 shares issued)	21,908			21,888
Additional paid-in capital	385,346			383,567
Retained earnings	824,932			793,077
Accumulated other comprehensive income, net of tax	(11,202		)	19,756
Treasury stock, at cost (10,937,569 and 10,932,539 shares)	(503,069		)	(502,475		)
Total shareholders’ equity	717,916			715,812
Total liabilities and shareholders’ equity	$	2,551,466		$	2,474,484

See Condensed Notes to Consolidated Financial Statements.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

INFINITY PROPERTY AND CASUALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

($ in thousands)

(unaudited)

	Common Stock		Additional Paid-in Capital		Retained Earnings			Accumulated Other Comprehensive Income, Net of Tax			Treasury Stock			Total
Balance at December 31, 2016	$	21,829	$	378,745	$	777,695		$	7,907		$	(486,990	)	$	699,187
Cumulative effect of change in accounting principle	—		—		(3,808		)	—			—			(3,808		)
Net earnings	—		—		10,510			—			—			10,510
Net change in post-retirement benefit liability	—		—		—			(8		)	—			(8		)
Change in unrealized gain on investments	—		—		—			6,579			—			6,579
Change in non-credit component of impairment losses on fixed maturities	—		—		—			22			—			22
Comprehensive income														17,102
Dividends paid to common shareholders	—		—		(6,402		)	—			—			(6,402		)
Shares issued and share-based compensation expense	18		1,430		—			—			—			1,449
Acquisition of treasury stock	—		—		—			—			(2,303		)	(2,303		)
Balance at March 31, 2017, as adjusted	$	21,848	$	380,175	$	777,994		$	14,500		$	(489,293	)	$	705,225
Net earnings	—		—		34,214			—			—			34,214
Net change in post-retirement benefit liability	—		—		—			(124		)	—			(124		)
Change in unrealized gain on investments	—		—		—			5,074			—			5,074
Change in non-credit component of impairment losses on fixed maturities	—		—		—			306			—			306
Comprehensive income														39,469
Dividends paid to common shareholders	—		—		(19,131		)	—			—			(19,131		)
Shares issued and share-based compensation expense	40		3,391		—			—			—			3,432
Acquisition of treasury stock	—		—		—			—			(13,182		)	(13,182		)
Balance at December 31, 2017, as adjusted	$	21,888	$	383,567	$	793,077		$	19,756		$	(502,475	)	$	715,812
Cumulative effect of change in accounting principle	$	—	$	—	18,118			$	(18,128	)	$	—		(10		)
Net earnings	—		—		20,083			—			—			20,083
Net change in post-retirement benefit liability	—		—		—			(1		)	—			(1		)
Change in unrealized gain on fixed maturity investments	—		—		—			(12,980		)	—			(12,980		)
Change in non-credit component of impairment losses on fixed maturities	—		—		—			152			—			152
Comprehensive income														7,254
Dividends paid to common shareholders	—		—		(6,346		)	—			—			(6,346		)
Shares issued and share-based compensation expense	21		1,779		—			—			—			1,800
Acquisition of treasury stock	—		—		—			—			(594		)	(594		)
Balance at March 31, 2018	$	21,908	$	385,346	$	824,932		$	(11,202	)	$	(503,069	)	$	717,916

See Condensed Notes to Consolidated Financial Statements.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

INFINITY PROPERTY AND CASUALTY CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

($ in thousands, unaudited)

	Three months ended
	March 31,
	2018			2017
				(as adjusted)
Operating Activities:
Net earnings	$	20,083		$	10,510
Adjustments:
Depreciation	3,696			4,177
Amortization	4,840			5,327
Net realized losses (gains) on investments	2,832			(509		)
Loss (gain) on disposal of property and equipment	10			(2		)
Share-based compensation expense	1,731			1,384
Activity related to rabbi trust	(13		)	69
Change in accrued investment income	2,980			246
Change in agents’ balances and premium receivable	(49,243		)	(17,118		)
Change in reinsurance receivables	8,216			917
Change in deferred policy acquisition costs	(10,372		)	(2,957		)
Change in other assets	(804		)	(4,505		)
Change in unpaid losses and loss adjustment expenses	(14,092		)	(6,508		)
Change in unearned premium	63,889			26,943
Change in other liabilities	(9,815		)	5,565
Net cash provided by operating activities	23,939			23,538
Investing Activities:
Purchases of fixed maturities	(403,516		)	(120,831		)
Purchases of equity securities	0			(1,900		)
Purchases of property and equipment	(313		)	(889		)
Maturities and redemptions of fixed maturities	32,497			43,319
Proceeds from sale of fixed maturities	328,064			37,671
Proceeds from sale of equity securities	5,013			2,002
Proceeds from sale of short-term investments	2,528			2,400
Proceeds from sale of property and equipment	0			19
Net cash used in investing activities	(35,727		)	(38,209		)
Financing Activities:
Proceeds from stock options exercised and employee stock purchases	70			65
Principal payments under capital lease obligations	(138		)	(135		)
Acquisition of treasury stock	(594		)	(2,296		)
Dividends paid to shareholders	(6,346		)	(6,402		)
Net cash used in financing activities	(7,009		)	(8,768		)
Net decrease in cash and cash equivalents	(18,796		)	(23,438		)
Cash and cash equivalents at beginning of period	107,589			92,800
Cash and cash equivalents at end of period	$	88,793		$	69,361

See Condensed Notes to Consolidated Financial Statements.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

March 31, 2018

INDEX TO NOTES

1.	Significant Reporting and Accounting Policies	7.	Additional Information
2.	Computation of Net Earnings Per Share	8.	Insurance Reserves
3.	Fair Value	9.	Commitments and Contingencies
4.	Investments	10.	Accumulated Other Comprehensive Income
5.	Long-Term Debt	11.	Segment Information
6.	Income Taxes

Note 1Significant Reporting and Accounting Policies

Nature of Operations

We are a holding company that provides insurance through our subsidiaries for personal auto with a concentration on nonstandard risks, commercial auto and classic collectors. Although licensed to write insurance in all 50 states and the District of Columbia, we focus on select states that we believe offer the greatest opportunity for premium growth and profitability.

Basis of Consolidation and Reporting

The accompanying consolidated financial statements are unaudited and should be read in conjunction with our Annual Report on Form 10-K (Form 10-K) for the year ended December 31, 2017. This Quarterly Report on Form 10-Q, including the Condensed Notes to Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations, focuses on our financial performance since the beginning of the year.

These financial statements reflect certain adjustments necessary for a fair presentation of our results of operations and financial position. Such adjustments consist of normal, recurring accruals recorded to accurately match expenses with their related revenue streams and the elimination of all significant intercompany transactions and balances.

We have evaluated events that occurred after March 31, 2018, for recognition or disclosure in our financial statements and the notes to the financial statements.

Schedules may not foot due to rounding.

Estimates

We based certain accounts and balances within these financial statements upon our estimates and assumptions. The amount of reserves for claims not yet paid, for example, is an item that we can only record by estimation. Unrealized capital gains and losses on investments are subject to market fluctuations, and we use judgment in the determination of whether unrealized losses on certain securities are temporary or other-than-temporary. Should actual results differ significantly from these estimates, the effect on our results of operations could be material. The results of operations for the periods presented may not be indicative of our results for the entire year.

Recently Adopted Accounting Standards

In February 2018 the FASB issued an ASU allowing a reclassification from accumulated other comprehensive income to retained earnings and consequently eliminating the stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017. We elected to early adopt the ASU and applied the amendment in the period of adoption, with a cumulative-effect adjustment of $0.4 million reclassified from accumulated other comprehensive income to retained earnings.

In October 2016 the FASB issued an ASU related to the recognition of income tax on intra-entity transfers of assets other than inventory. The guidance requires the income tax to be recognized when the transfer occurs rather than when the asset is sold to an

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

outside party. We adopted the change on a modified retrospective basis, with a cumulative-effect adjustment of less than $(0.1) million recorded to retained earnings as of January 1, 2018.

In January 2016 the FASB issued an ASU amending the guidance on classifying and measuring financial instruments. The guidance requires equity securities to be measured at fair value and changes in that fair value to be recognized through net income. We adopted the change on a modified retrospective basis as of January 1, 2018, with a cumulative-effect adjustment of $17.7 million reclassified from other comprehensive income to retained earnings.

In May 2014 the FASB issued an ASU related to the accounting for revenue from contracts with customers. Insurance contracts were excluded from the scope of the guidance. As an insurance-entity, we are largely exempt from the provisions of this standard, with only fee income subject to this new standard. Processing and policy fees were generally earned at the inception of the policy under previous guidance but are earned over the life of the policy under current guidance. The guidance was adopted as of January 1, 2018, using a full retrospective approach with a cumulative-effect adjustment to the balance sheet, which reduced shareholders' equity by $4.5 million.

The following table illustrates the effect of adopting this standard on the Consolidated Balance Sheets ($ in millions):

	December 31, 2017
	As Reported		As Adjusted		Difference
Agents' balances and premium receivable	$	508.1	$	508.0	$	(0.1	)
Current and deferred income taxes	9.4		10.5		1.2
Total assets	2,473.4		2,474.5		1.1
Other liabilities	114.3		119.8		5.5
Shareholders' equity	720.3		715.8		(4.5		)
Total liabilities and shareholders' equity	2,473.4		2,474.5		1.1

The following table illustrates the effect of adopting this standard on the Consolidated Statements of Earnings (in millions, except per share amounts):        

	Three months ended March 31, 2017
	As Reported		As Adjusted		Difference
Installment and other fee income	$	26.9	$	26.7	$	(0.2	)
Total revenues	377.8		377.6		(0.2		)
Earnings before income taxes	15.1		14.9		(0.2		)
Provision for income taxes	4.4		4.4		(0.1		)
Net earnings	10.6		10.5		(0.1		)
Net earnings per common share:
Basic	$	0.97	$	0.96	$	(0.01	)
Diluted	0.96		0.94		(0.02		)

We also adjusted the Consolidated Statements of Changes in Shareholders' Equity and the Consolidated Statements of Cash Flows for these changes for the three months ended March 31, 2017.

Recently Issued Accounting Standards

In March 2017 the FASB issued an ASU related to the amortization of premium on purchased callable debt securities. The guidance amends the amortization period for certain purchased callable debt securities held at a premium. Securities that contain explicit, noncontingent call features that are callable at fixed prices and on preset dates should shorten the amortization period for the premium to the earliest call date (and if the call option is not exercised, the effective yield is reset using the payment terms of the debt security). The standard is effective for fiscal years, and interim period within those years, beginning after December 15, 2018, and is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

In June 2016 the FASB issued an ASU related to the accounting for credit losses. The guidance generally requires credit losses on available-for-sale debt securities to be recognized as an allowance rather than as a reduction to the amortized cost of a security.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

The standard is effective for fiscal periods beginning after December 15, 2019, and interim periods within the year of adoption, with prospective application of the ASU required for debt securities for which an other-than-temporary impairment has been recognized before the implementation date. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

In February 2016 the FASB issued an ASU related to the accounting for leases. The guidance requires lessees to recognize lease assets and liabilities on the balance sheet. The standard is effective for fiscal years beginning after December 15, 2018, and is to be applied retrospectively, with an option to use a modified retrospective approach for leases which commenced prior to the effective date of this ASU. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

Note 2Computation of Net Earnings per Share

The following table illustrates our computations of basic and diluted net earnings per common share ($ in thousands, except per

share figures):

	Three months ended
	March 31,
	2018		2017
Net earnings	$	20,083	$	10,510
Average basic shares outstanding	10,915		10,998
Basic net earnings per share	$	1.84	$	0.96
Average basic shares outstanding	10,915		10,998
Restricted stock not vested	8		33
Dilutive effect of Performance Share Plan	86		96
Average diluted shares outstanding	11,009		11,127
Diluted net earnings per share	$	1.82	$	0.94

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Note 3Fair Value

Fair values of instruments are based on:

(i) quoted prices in active markets for identical assets (Level 1);

(ii) quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs are observable in active markets (Level 2); or

(iii) valuations derived from valuation techniques in which one or more significant inputs are unobservable in the marketplace (Level 3).

The following tables present, for each of the fair value hierarchy levels, our assets and liabilities for which we report fair value on a recurring basis ($ in thousands):

	Fair Value
March 31, 2018	Level 1			Level 2			Level 3			Total
Cash and cash equivalents	$	88,793		$	0		$	0		$	88,793
Fixed maturity securities:
U.S. government	124,757			0			0			124,757
State and municipal	0			296,048			766			296,814
Mortgage-backed securities:
Residential	0			365,007			0			365,007
Commercial	0			59,204			2,857			62,061
Total mortgage-backed securities	0			424,211			2,857			427,068
Asset-backed securities	0			110,836			17,647			128,484
Corporates	0			520,698			109			520,807
Total fixed maturities	124,757			1,351,794			21,379			1,497,930
Equity securities	90,498			0			0			90,498
Short-term investments	0			0			0			0
Total cash and investments	$	304,048		$	1,351,794		$	21,379		$	1,677,221
Percentage of total cash and investments	18.1		%	80.6		%	1.3		%	100.0		%
December 31, 2017
Cash and cash equivalents	$	107,589		$	0		$	0		$	107,589
Fixed maturity securities:
U.S. government	60,528			0			0			60,528
State and municipal	0			490,724			3,488			494,211
Mortgage-backed securities:
Residential	0			350,992			0			350,992
Commercial	0			30,569			0			30,569
Total mortgage-backed securities	0			381,561			0			381,561
Asset-backed securities	0			62,266			152			62,418
Corporates	0			442,281			108			442,390
Total fixed maturities	60,528			1,376,832			3,748			1,441,107
Equity securities	96,004			0			0			96,004
Short-term investments	0			2,541			0			2,541
Total cash and investments	$	264,121		$	1,379,373		$	3,748		$	1,647,242
Percentage of total cash and investments	16.0		%	83.7		%	0.2		%	100.0		%

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

We do not report our long-term debt at fair value in the Consolidated Balance Sheets. The $286.3 million and $290.8 million fair value of our long-term debt at March 31, 2018, and December 31, 2017, respectively, would be included in Level 2 of the fair value hierarchy if it were reported at fair value.

Level 1 includes cash and cash equivalents, U.S. Treasury securities, an exchange-traded fund and equities held in a rabbi trust which funds our Supplemental Employee Retirement Plan (SERP). Level 2 includes securities whose fair value was determined using observable market inputs. Level 3 securities are comprised of (i) securities for which there is no active or inactive market for similar instruments; (ii) securities whose fair value is determined based on unobservable inputs; and (iii) securities, other than those backed by the U.S. Government, that are not rated by a nationally recognized statistical rating organization (NRSRO). We recognize transfers between levels at the beginning of the reporting period.

A third party nationally recognized pricing service provides the fair value of securities in Level 2. A summary of the significant valuation techniques and market inputs for each class of security follows:

U.S. Government: In determining the fair value for U.S. Government securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data and industry and economic events.

State and municipal: In determining the fair value for state and municipal securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data and industry and economic events.

Mortgage-backed securities: In determining the fair value for mortgage-backed securities we use the market approach and to a lesser extent the income approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data, industry and economic events and monthly payment information.

Asset-backed securities: In determining the fair value for asset-backed securities we use the market approach and to a lesser extent the income approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data, industry and economic events, monthly payment information and collateral performance.

Corporate: In determining the fair value for corporate securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads (for investment grade securities), observations of equity and credit default swap curves (for high-yield corporates), reference data and industry and economic events.

We review the third party pricing methodologies quarterly and test for significant differences between the market price used to value the security and recent sales activity.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

The following tables present the progression in the Level 3 fair value category ($ in thousands):

Three months ended March 31, 2018	State and Municipal			Mortgage- Backed Securities		Asset-Backed Securities			Corporates			Total
Balance at beginning of period	$	3,488		$	0	$	152		$	108		$	3,748
Total (losses) gains, unrealized or realized
Included in net earnings	(10		)	0		(0		)	(0		)	(10		)
Included in other comprehensive income	3			10		27			1			41
Purchases	0			2,847		17,729			0			20,576
Sales	(3,360		)	0		0			0			(3,360		)
Settlements	0			0		(261		)	0			(261		)
Transfers in	645			0		0			0			645
Balance at end of period	$	766		$	2,857	$	17,647		$	109		$	21,379
Three months ended March 31, 2017
Balance at beginning of period	$	3,860		$	0	$	412		$	666		$	4,938
Total (losses) gains, unrealized or realized
Included in net earnings	(31		)	0		0			1			(30		)
Included in other comprehensive income	15			0		1			(22		)	(6		)
Purchases	0			0		4,259			2,000			6,259
Sales	(694		)	0		0			0			(694		)
Settlements	0			0		(88		)	(92		)	(180		)
Transfers in	329			0		0			0			329
Balance at end of period	$	3,479		$	0	$	4,584		$	2,553		$	10,616

Of the $21.4 million fair value of securities in Level 3 at March 31, 2018, which consisted of eleven securities, we priced six based on non-binding broker quotes, one was priced based on our unaffiliated money manager and foursecurities, which were included in Level 3 because they were not rated by a nationally recognized statistical rating organization, were priced by a nationally recognized pricing service.

During the three months ended March 31, 2018, eight securities were purchased and are new issues. One security, which was an exchange of a rated municipal bond for an unrated refunded bond, was transferred from Level 2 into Level 3. There were no transfers of securities between Levels 1 and 2. During the three months ended March 31, 2017, one security, which was an exchange of a rated municipal bond for an unrated refunded bond, was transferred from Level 2 into Level 3.

The gains or losses included in net earnings are included in the line item "Net realized gains on investments" in the Consolidated Statements of Earnings. We recognize the net gains or losses included in other comprehensive income in the line item "Unrealized (losses) gains on investments, net" in the Consolidated Statements of Comprehensive Income and the line item "Change in unrealized gain on investments" or the line item "Change in non-credit component of impairment losses on fixed maturities" in the Consolidated Statements of Changes in Shareholders’ Equity.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

The following table presents the carrying value and estimated fair value of our financial instruments ($ in thousands):

	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	$	88,793	$	88,793	$	107,589	$	107,589
Available-for-sale securities:
Fixed maturities	1,497,930		1,497,930		1,441,107		1,441,107
Equity securities	90,498		90,498		96,004		96,004
Short-term investments	0		0		2,541		2,541
Total cash and investments	$	1,677,221	$	1,677,221	$	1,647,242	$	1,647,242
Liabilities:
Long-term debt	$	273,865	$	286,330	$	273,809	$	290,824

Refer to Note 4 – Investments to the Consolidated Financial Statements for additional information on investments and Note 5 – Long-Term Debt to the Consolidated Financial Statements for additional information on long-term debt.

Note 4Investments

We consider all fixed maturity and equity securities to be available-for-sale and report them at fair value. Net unrealized gains or losses on equity securities prior to January 1, 2018, and on fixed maturities are reported after-tax (net of any valuation allowance) as a component of other comprehensive income. As of January 1, 2018, changes in fair value of equity securities are recognized through net income. The proceeds from sales of securities for the three months ended March 31, 2018, and March 31, 2017, were $335.6 million and $42.1 million, respectively. Sales of securities were higher during the first quarter of 2018 as a result of our transition to a new investment policy statement and related portfolio repositioning. The proceeds for the three months ended March 31, 2018, were net of $0.1 million of receivable for securities sold as of March 31, 2018. The proceeds for the three months ended March 31, 2017, were net of $5.2 million of receivable for securities sold during the first quarter of 2017 that had not settled as of March 31, 2017.

Gross gains of $2.9 million and gross losses of $1.6 million were realized on sales of available-for-sale securities during the three months ended March 31, 2018, compared with gross gains of $0.7 million and gross losses of $0.2 million realized on sales during the three months ended March 31, 2017. Gains or losses on securities are determined on a specific identification basis.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Summarized information for the major categories of our investment portfolio follows ($ in thousands):

March 31, 2018	Amortized Cost or Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		OTTI Recognized in Accumulated OCI(1)
Fixed maturities:
U.S. government	$	125,887	$	58	$	(1,188	)	$	124,757	$	0
State and municipal	297,994		1,031		(2,211		)	296,814		0
Mortgage-backed securities:
Residential	372,319		669		(7,981		)	365,007		(72		)
Commercial	63,053		23		(1,016		)	62,061		0
Total mortgage-backed securities	435,372		693		(8,996		)	427,068		(72		)
Asset-backed securities	129,010		104		(630		)	128,484		0
Corporates	524,676		1,726		(5,595		)	520,807		0
Total fixed maturities	1,512,939		3,612		(18,621		)	1,497,930		(72		)
Short-term investments	0		0		0			0		0
Total	$	1,512,939	$	3,612	$	(18,621	)	$	1,497,930	$	(72	)
December 31, 2017
Fixed maturities:
U.S. government	$	61,196	$	0	$	(668	)	$	60,528	$	0
State and municipal	492,442		2,768		(999		)	494,211		(46		)
Mortgage-backed securities:
Residential	353,277		1,812		(4,097		)	350,992		(1,479		)
Commercial	31,204		18		(653		)	30,569		0
Total mortgage-backed securities	384,481		1,830		(4,750		)	381,561		(1,479		)
Asset-backed securities	62,552		62		(196		)	62,418		(8		)
Corporates	439,208		4,610		(1,429		)	442,390		(31		)
Total fixed maturities	1,439,878		9,271		(8,042		)	1,441,107		(1,564		)
Equity securities	68,812		27,192		0			96,004		0
Short-term investments	2,541		0		0			2,541		0
Total	$	1,511,232	$	36,463	$	(8,042	)	$	1,539,653	$	(1,564	)
(1) The total non-credit portion of OTTI recognized in Accumulated OCI reflecting the original non-credit loss at the time the credit impairment was determined.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

The following tables set forth the amount of unrealized loss by investment category and length of time that individual securities have been in a continuous unrealized loss position ($ in thousands):

	Less than 12 Months								12 Months or More
March 31, 2018	Number of Securities with Unrealized Losses	Fair Value		Gross Unrealized Losses			Unrealized Losses as % of Cost		Number of Securities with Unrealized Losses	Fair Value		Gross Unrealized Losses			Unrealized Losses as % of Cost
Fixed maturities:
U.S. government	28	$	48,202	$	(881	)	1.8	%	16	$	12,743	$	(307	)	2.4	%
State and municipal	99	184,046		(2,147		)	1.2	%	4	4,573		(64		)	1.4	%
Mortgage-backed securities:
Residential	263	144,098		(2,250		)	1.5	%	272	119,273		(5,730		)	4.6	%
Commercial	15	30,658		(177		)	0.6	%	8	23,206		(839		)	3.5	%
Total mortgage-backed securities	278	174,756		(2,427		)	1.4	%	280	142,480		(6,569		)	4.4	%
Asset-backed securities	43	74,670		(628		)	0.8	%	1	1,458		(2		)	0.1	%
Corporates	232	367,660		(5,168		)	1.4	%	15	18,126		(427		)	2.3	%
Total fixed maturities	680	849,333		(11,252		)	1.3	%	316	179,380		(7,369		)	3.9	%
Short-term investments	0	0		0			0.0	%	0	0		0			0.0	%
Total	680	$	849,333	$	(11,252	)	1.3	%	316	$	179,380	$	(7,369	)	3.9	%
December 31, 2017
Fixed maturities:
U.S. government	25	$	46,160	$	(422	)	0.9	%	16	$	14,368	$	(246	)	1.7	%
State and municipal	82	163,997		(939		)	0.6	%	5	10,529		(60		)	0.6	%
Mortgage-backed securities:
Residential	154	81,841		(453		)	0.6	%	279	127,317		(3,644		)	2.8	%
Commercial	2	3,578		(30		)	0.8	%	9	23,066		(623		)	2.6	%
Total mortgage-backed securities	156	85,419		(483		)	0.6	%	288	150,383		(4,267		)	2.8	%
Asset-backed securities	31	35,407		(193		)	0.5	%	2	1,561		(3		)	0.2	%
Corporates	104	158,788		(1,197		)	0.7	%	13	16,468		(232		)	1.4	%
Total fixed maturities	398	489,771		(3,233		)	0.7	%	324	193,309		(4,809		)	2.4	%
Equity securities	0	0		0			0.0	%	0	0		0			0.0	%
Short-term investments	0	0		0			0.0	%	0	0		0			0.0	%
Total	398	$	489,771	$	(3,233	)	0.7	%	324	$	193,309	$	(4,809	)	2.4	%

The determination of whether unrealized losses are “other-than-temporary” requires judgment based on subjective as well as objective factors. Factors we considered and resources we used in our determination include:

• whether the unrealized loss is credit-driven or a result of changes in market interest rates;

• the length of time the security’s market value has been below its cost;

• the extent to which fair value is less than cost basis;

• the intent to sell the security;

• whether it is more likely than not that there will be a requirement to sell the security before its anticipated recovery;

• historical operating, balance sheet and cash flow data contained in issuer SEC filings;

• issuer news releases;

• near-term prospects for improvement in the issuer and/or its industry;

• industry research and communications with industry specialists; and

• third-party research and credit rating reports.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

We regularly evaluate for potential impairment each security position that has either of the following: a fair value of less than 95% of its book value or an unrealized loss that equals or exceeds $100,000.

The following table summarizes those securities with unrealized gains or losses (2018 includes fixed maturity securities only):

	March 31, 2018		December 31, 2017
Number of positions held with unrealized:
Gains	302		496
Losses	996		722
Number of positions held that individually exceed unrealized:
Gains of $500,000	0		2
Losses of $500,000	0		0
Percentage of positions held with unrealized:
Gains that were investment grade	84	%	81	%
Losses that were investment grade	94	%	97	%
Percentage of fair value held with unrealized:
Gains that were investment grade	88	%	81	%
Losses that were investment grade	93	%	95	%

The following table sets forth the amount of unrealized losses by age and severity at March 31, 2018, ($ in thousands):

Age of Unrealized Losses	Fair Value of Securities with Unrealized Losses		Total Gross Unrealized Losses			Less  Than 5%*			5% - 10%*			Total Gross Greater Than 10%*
Three months or less	$	454,565	$	(3,506	)	$	(3,394	)	$	(112	)	$	0
Four months through six months	247,851		(4,193		)	(4,007		)	(185		)	0
Seven months through nine months	139,484		(3,392		)	(3,392		)	0			0
Ten months through twelve months	7,432		(161		)	(161		)	0			0
Greater than twelve months	179,380		(7,369		)	(4,846		)	(2,523		)	0
Total	$	1,028,713	$	(18,621	)	$	(15,801	)	$	(2,820	)	$	0

* As a percentage of amortized cost or cost.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

The change in unrealized gains (losses) on marketable securities recognized through accumulated other comprehensive income included the following ($ in thousands):

	Pre-tax
Three months ended March 31, 2018	Fixed Maturities			Short-Term Investments			Tax Effects			Net
Unrealized holding (losses) gains on securities arising during the period	$	(18,346	)	$	1		3,852			(14,492		)
Realized losses (gains) on securities sold	519			(1		)	(109		)	409
Impairment loss recognized in earnings	1,588			0			(334		)	1,255
Change in unrealized, net	$	(16,238	)	$	0		$	3,410		$	(12,828	)

	Pre-tax
Three months ended March 31, 2017	Fixed Maturities		Equity Securities			Short-Term Investments			Tax Effects			Net
Unrealized holding gains on securities arising during the period	$	4,368	$	6,294		$	3		$	(3,733	)	$	6,932
Realized losses (gains) on securities sold	52		(569		)	(1		)	182			(337		)
Impairment loss recognized in earnings	10		0			0			(3		)	6
Change in unrealized, net	$	4,429	$	5,725		$	1		$	(3,554	)	$	6,601

For fixed maturity securities that are other-than-temporarily impaired, we assess our intent to sell and the likelihood that we will be required to sell the security before recovery of our amortized cost. If a fixed maturity security is considered other-than-temporarily impaired but we do not intend to and are not more than likely to be required to sell the security before our recovery to amortized cost, the amount of the impairment is separated into a credit loss component and the amount due to all other factors ("non-credit component"). The excess of the amortized cost over the present value of the expected cash flows determines the credit loss component of an impairment charge on a fixed maturity security. The present value is determined using the best estimate of cash flows discounted at (i) the effective interest rate implicit at the date of acquisition for non-structured securities; or (ii) the book yield for structured securities. The techniques and assumptions for determining the best estimate of cash flows vary depending on the type of security. We recognize the credit loss component of an impairment charge in net earnings and the non-credit component in accumulated other comprehensive income. If we intend to sell or will, more likely than not, be required to sell a security, the entire amount of the impairment is treated as a credit loss.

For our securities held with unrealized losses, we believe, based on our analysis, that we will recover our cost basis in these securities and we do not intend to sell the securities nor is it more likely than not that there will be a requirement to sell the securities before they recover in value.

The following table is a progression of credit losses on fixed maturity securities that were bifurcated between a credit and non-credit component ($ in thousands):

	Three months ended March 31,
	2018			2017
Beginning balance	$	753		$	557
Additions for:
Previously impaired securities	278			0
Newly impaired securities	7			10
Reductions for:
Securities sold and paid down	(41		)	(24		)
Ending balance	$	996		$	542

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

The table below sets forth the scheduled maturities of fixed maturity securities at March 31, 2018, based on their fair values ($ in thousands). We report securities that do not have a single maturity date at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers.

	Fair Value								Amortized Cost
Maturity	Securities with Unrealized Gains		Securities with Unrealized Losses		Securities with No Unrealized Gains or Losses		All Fixed Maturity Securities		All Fixed Maturity Securities
One year or less	$	9,473	$	24,024	$	1,353	$	34,850	$	34,848
After one year through five years	188,968		453,537		7,187		649,692		653,913
After five years through ten years	68,219		157,207		649		226,075		228,286
After ten years	31,179		582		0		31,761		31,510
Mortgage- and asset-backed securities	143,210		393,363		18,979		555,552		564,382
Total	$	441,049	$	1,028,713	$	28,168	$	1,497,930	$	1,512,939

The portion of unrealized gains and losses recorded during the three months ended March 31, 2018, that relate to equities still held at the end of the reporting date are as follows ($ in thousands):

Net losses recognized during the period on equity securities	$	(726	)
Less: Net gains recognized during the period on equity securities sold	(1,881		)
Unrealized losses recognized during the period on equity securities still held at the reporting date	$	(2,607	)

Note 5Long-Term Debt

($ in thousands)	March 31, 2018		December 31, 2017
Principal	$	275,000	$	275,000
Unamortized debt issuance costs	1,135		1,191
Long-term debt less unamortized debt issuance costs	$	273,865	$	273,809

In September 2012 we issued $275 million principal of senior notes due September 2022 (the “5.0% Senior Notes”). The 5.0% Senior Notes accrue interest at 5.0%, payable semiannually. At the time we issued the 5.0% Senior Notes, we capitalized $2.2 million of debt issuance costs, which we are amortizing over the term of the 5.0% Senior Notes. We calculated the March 31, 2018, fair value of $286.3 million using a 124 basis point spread to the 10-year U.S. Treasury Note of 2.741%.

In August 2017 we renewed our agreement for a $50 millionthree-year revolving credit facility (the “Credit Agreement”) that requires us to meet certain financial and other covenants. We are currently in compliance with all covenants under the Credit Agreement, and as of March 31, 2018, there were no borrowings outstanding against it.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Note 6Income Taxes

The following is a reconciliation of income taxes at the statutory rate of 21% and 35% for 2018 and 2017, respectively, to the effective provision for income taxes as shown in the Consolidated Statements of Earnings ($ in thousands):

	Three months ended
	March 31,
	2018			2017
Earnings before income taxes	$	24,937		$	14,868
Income taxes at statutory rate	5,237			5,204
Effect of:
Dividends-received deduction	(25		)	(79		)
Tax-exempt interest	(279		)	(633		)
Other	(80		)	(134		)
Provision for income taxes as shown on the Consolidated Statements of Earnings	$	4,853		$	4,358
GAAP effective tax rate	19.5		%	29.3		%

Note 7Additional Information

Supplemental Cash Flow Information

We made the following payments that we do not separately disclose in the Consolidated Statements of Cash Flows ($ in thousands):

	Three months ended
	March 31,
	2018		2017
Income tax payments	$	0	$	3,100
Interest payments on debt	6,875		6,875
Interest payments on capital leases	15		21

Negative Cash Book Balances

Negative cash book balances, included in the line item “Other liabilities” in the Consolidated Balance Sheets, were $49.2 million and $49.7 million at March 31, 2018, and December 31, 2017, respectively.

Merger with Kemper Corporation

On February 13, 2018, Kemper Corporation (“Kemper”), a wholly owned subsidiary of Kemper (“Kemper Merger Sub”) and Infinity entered into a merger agreement (the “Merger Agreement”) under which Kemper will acquire Infinity in a cash and stock transaction valued at approximately $1.4 billion, plus assumption of certain of Infinity’s debt, or $129.00 per Infinity share; the exchange ratio for stock consideration to be issued in the merger is fixed and was determined based on Kemper’s 20-trading day volume weighted average price as of February 12, 2018 of $64.40. Based on Kemper’s February 12, 2018 closing stock price of $57.75, the implied total consideration is approximately $1.3 billion, or $121.01 per Infinity share. Pursuant to the Merger Agreement, Kemper Merger Sub will merge with and into Infinity, with Infinity surviving as a wholly owned subsidiary of Kemper. Kemper is a diversified insurance holding company, with subsidiaries that provide automobile, homeowners, life, health, and other insurance products to individuals and businesses. Kemper conducts its operations through two operating segments: Property & Casualty Insurance and Life & Health Insurance. Kemper conducts its operations solely in the United States with approximately 5,550 full-time associates supporting their operations.

Under the terms of the Merger Agreement, as of the effective time of the merger (the “Effective Time”), each share of Infinity common stock issued and outstanding as of immediately prior to the Effective Time (other than as set forth in the Merger Agreement) will be canceled and converted into, at the election of the holder of such share and subject to an automatic adjustment as described below, the right to, receive (i) $51.60 in cash and 1.2019 Kemper common shares for each share of Infinity common stock, without

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

interest (the “Mixed Consideration”), (ii) an amount of cash for each share of Infinity common stock, without interest, equal to $129.00 (the “Cash Consideration”) or (iii) a number of shares of Kemper common stock equal to 2.0031 (the “Stock Consideration”). Holders of Infinity common stock who do not make an election will receive the Mixed Consideration. The consideration to be paid to holders of Infinity common stock electing to receive the Cash Consideration or the Stock Consideration in connection with the merger is subject to automatic adjustment, as applicable, to ensure that the total amount of cash paid and the total number of shares of Kemper common stock issued in the merger is the same as what would be paid and issued if all holders of Infinity common stock were to receive the Mixed Consideration. Following the close of the merger, Infinity shareholders are expected to own approximately 20% of the combined company on a pro-forma basis.

The merger has been approved by the Board of Directors of each company and is expected to close in the third quarter of 2018, subject to the satisfaction or waiver of applicable closing conditions. During the first quarter of 2018, Kemper and Infinity received notice from the U.S. Federal Trade Commission granting early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, thereby satisfying one of the applicable closing conditions. Remaining closing conditions to which the completion of the merger is subject include, among others, (i) adoption by Infinity shareholders of the Merger Agreement, (ii) approval by Kemper stockholders of the issuance of Kemper common stock in connection with the merger, (iii) the receipt of certain other regulatory approvals, (iv) the absence of any effective order issued by any court of competent jurisdiction or other legal restraint prohibiting or preventing the consummation of the merger and (v) other closing conditions.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Note 8Insurance Reserves

Insurance reserves include liabilities for unpaid losses, both known and estimated for incurred but not reported (IBNR), and unpaid loss adjustment expenses (LAE). The following table provides an analysis of changes in the liability for unpaid losses and LAE on a GAAP basis ($ in thousands):

	Three months ended
	March 31,
	2018			2017
Balance at Beginning of Period
Unpaid losses on known claims	$	264,470		$	238,412
IBNR losses	312,516			306,641
LAE	138,112			140,402
Total unpaid losses and LAE	715,098			685,455
Reinsurance recoverables	(31,609		)	(17,130		)
Unpaid losses and LAE, net of reinsurance recoverables	683,489			668,325
Current Activity
Loss and LAE incurred:
Current accident year	273,408			277,044
Prior accident years	(8,856		)	(6,368		)
Total loss and LAE incurred	264,552			270,676
Loss and LAE payments:
Current accident year	(89,106		)	(96,869		)
Prior accident years	(177,479		)	(179,319		)
Total loss and LAE payments	(266,585		)	(276,187		)
Balance at End of Period
Unpaid losses and LAE, net of reinsurance recoverables	681,457			662,814
Add back reinsurance recoverables	19,549			16,133
Total unpaid losses and LAE	701,006			678,947
Unpaid losses on known claims	247,940			233,303
IBNR losses	318,281			307,932
LAE	134,786			137,712
Total unpaid losses and LAE	$	701,006		$	678,947

The $8.9 million of favorable reserve development during the three months ended March 31, 2018, was primarily due to decreases in accident year 2017 estimates from California, with lower ultimate frequency estimates in collision and comprehensive coverages along with lower ultimate severity estimates for collision coverage, and from Florida, with decreased ultimate frequency estimates in collision, comprehensive and personal injury protection coverages.

The $6.4 million of favorable reserve development during the three months ended March 31, 2017, was primarily due to decreases in frequency estimates in California and Florida material damage coverages related to accident year 2016, partially offset by increases in severity estimates in personal injury protection coverages and in bodily injury coverages in our commercial auto product related to accident years 2016 and prior.

Note 9Commitments and Contingencies

Commitments

There have been no material changes from the commitments discussed on Form 10-K for the year ended December 31, 2017. For a description of our previously reported commitments, refer to Note 14 Commitments and Contingencies of our Form 10-K for the year ended December 31, 2017.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Contingencies

From time to time, we and our subsidiaries are named as defendants in various lawsuits incidental to our insurance operations. We consider legal actions relating to claims made in the ordinary course of seeking indemnification for a loss covered by the insurance policy in establishing loss and LAE reserves.

We also face in the ordinary course of business lawsuits that seek damages beyond policy limits, commonly known as extra-contractual claims, as well as class action and individual lawsuits that involve issues not unlike those facing other insurance companies and employers.

We continually evaluate potential liabilities and reserves for litigation of these types using the criteria established by the Contingencies topic of the FASB Accounting Standards Codification. Under this guidance, we may only record reserves for a loss if the likelihood of occurrence is probable and we can reasonably estimate the amount or range of the loss. When disclosing litigation or claims where a material loss is judged to be reasonably possible, we will disclose an estimated range of loss or state that an estimate cannot be made. We consider each legal action using this guidance and record reserves for losses as warranted by establishing a reserve captured within our Consolidated Balance Sheets line-items “Unpaid losses and loss adjustment expenses” for extra-contractual claims and “Other liabilities” for class action and other non-claims related lawsuits. We record amounts incurred on the Consolidated Statements of Earnings within “Losses and loss adjustment expenses” for extra-contractual claims and “Other expenses” for class action and other non-claims related lawsuits.

Certain claims and regulatory or legal actions have been threatened or brought against us for which we have accrued no loss, and for which an estimate of a possible range of loss cannot be made under the above rules. While it is not possible to predict the ultimate outcome of these lawsuits, we do not believe they are likely to have a material effect on our financial condition or liquidity. However, losses incurred because of these cases could have a material adverse impact on net earnings in a given period.

As of March 31, 2018, pending putative (i.e., not certified) class action lawsuits that challenge certain of Infinity’s business operations and practices included the following:

• allegations we sold a lessor liability endorsement affording only illusory coverage.

• a challenge to denial of personal injury protection benefits to a class of injured third parties in vehicle accidents.

• a challenge to our payment of a percentage of arbitration awards to collection agencies in successful intercompany

arbitrations.

• allegations that we are obligated to reimburse Medicare or secondary payers for accident-related medical payments in

which personal injury protection benefits were denied.

In addition to lawsuits, regulatory bodies, including state insurance departments and the Securities and Exchange Commission, among others, may make inquiries, investigate consumer complaints or conduct on-site examinations concerning specific business practices or compliance more generally. Such inquiries, investigations or examinations have in the past and may in the future directly or indirectly result in regulatory orders requiring remedial, injunctive or other actions or the assessment of substantial fines or other penalties.

For a description of previously reported contingencies, refer to Note 14 Commitments and Contingencies of our Form 10-K for the year ended December 31, 2017.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Note 10Accumulated Other Comprehensive Income

The components of other comprehensive income before and after tax are as follows ($ in thousands):

	Three months ended March 31,
	2018									2017
	Before Tax			Income Tax			Net			Before Tax			Income Tax			Net
Accumulated change in post-retirement benefit liability, beginning of period	$	829		$	(290	)	$	539		$	1,033		$	(361	)	$	671
Cumulative effect of change in accounting principle	0			116			116			0			0			0
Effect on other comprehensive income	(2		)	0			(1		)	(13		)	4			(8		)
Accumulated change in post-retirement benefit liability, end of period	827			(174		)	653			1,020			(357		)	663
Accumulated unrealized gains on investments, net, beginning of period	28,421			(9,204		)	19,217			11,133			(3,896		)	7,236
Cumulative effect of change in accounting principle	(27,192		)	8,948			(18,244		)	0			0			0
Other comprehensive (loss) income before reclassification (1)	(18,344		)	3,852			(14,492		)	10,664			(3,733		)	6,932
Reclassification adjustment for other-than-temporary impairments included in net income (1)	1,588			(334		)	1,255			10			(3		)	6
Reclassification adjustment for realized losses (gains) included in net income (1)	518			(109		)	409			(519		)	182			(337		)
Effect on other comprehensive income	(16,238		)	3,410			(12,828		)	10,155			(3,554		)	6,601
Accumulated unrealized (losses) gains on investments, net, end of period	(15,009		)	3,154			(11,855		)	21,288			(7,451		)	13,837
Accumulated other comprehensive income, beginning of period	29,250			(9,494		)	19,756			12,165			(4,258		)	7,907
Cumulative effect of change in accounting principle	(27,192		)	9,064			(18,128		)	0			0			0
Change in post-retirement benefit liability	(2		)	0			(1		)	(13		)	4			(8		)
Change in unrealized (losses) gains on investments, net (1)	(16,238		)	3,410			(12,828		)	10,155			(3,554		)	6,601
Effect on other comprehensive income	(43,432		)	12,474			(30,958		)	10,143			(3,550		)	6,593
Accumulated other comprehensive (loss) income, end of period	$	(14,182	)	$	2,980		$	(11,202	)	$	22,308		$	(7,808	)	$	14,500

(1) The amounts for 2018 are for fixed maturities only.

24

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Note 11Segment Information

We manage our business based on product line and have three operating segments: Personal Auto, Commercial Auto and Classic Collector (our reportable segments are Personal Auto and Commercial Auto).

Our Personal Auto product provides coverage to individuals for liability to others for bodily injury and property damage and for physical damage to an insured's own vehicle from collision and various other perils. In addition, some states require policies to provide for first party personal injury protection, frequently referred to as no-fault coverage.

Our Commercial Auto product provides coverage to businesses for liability to others for bodily injury and property damage and for physical damage to vehicles from collision and various other perils. We primarily target businesses with fleets of 10 or fewer vehicles and average 1.9 vehicles per policy. We avoid businesses that are involved in what we consider to be hazardous operations or interstate commerce.

Our Classic Collector product provides coverage to individuals with classic or antique automobiles for liability to others for bodily injury and property damage and for physical damage to an insured's own vehicle from collision and various other perils.

25

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

All segment revenues are generated from external customers. The following table provides revenues by segment and a reconciliation to "Total revenues" as reported on the Consolidated Statements of Earnings ($ in thousands):

	Three months ended
	March 31,
Gross written premium:	2018			2017
Personal Auto	$	370,193		$	324,352
Commercial Auto	47,739			42,785
Classic Collector	3,660			3,565
Total gross written premium	421,592			370,702
Ceded reinsurance:
Personal Auto	(2,077		)	(983		)
Commercial Auto	(1,379		)	(1,412		)
Classic Collector	(260		)	(213		)
Total ceded reinsurance	(3,716		)	(2,608		)
Net written premium:
Personal Auto	368,116			323,369
Commercial Auto	46,360			41,373
Classic Collector	3,400			3,352
Total net written premium	417,876			368,094
Change in unearned premium:
Personal Auto	(57,817		)	(20,983		)
Commercial Auto	(6,532		)	(6,170		)
Classic Collector	460			428
Total change in unearned premium	(63,889		)	(26,726		)
Earned premium:
Personal Auto	310,298			302,386
Commercial Auto	39,828			35,203
Classic Collector	3,860			3,780
Total earned premium	353,987			341,368
Installment and other fee income:
Personal Auto	24,281			23,937
Commercial Auto	3,114			2,802
Classic Collector	0			0
Total installment and other fee income	27,395			26,739
Net investment income	9,786			8,695
Net realized gains on investments	(2,832		)	509
Other income	430			275
Total revenues	$	388,766		$	377,587

26

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Our management uses underwriting income and combined ratios calculated on a statutory accident year basis as primary measures of profitability. Statutory accident year underwriting income is calculated by subtracting losses and loss adjustment expenses and commissions and other underwriting expenses (including bad debt charge-offs on agents' balances and premium receivables) from the total of earned premium and installment and other fee income. The statutory accident year combined ratio represents the sum of the following ratios: (i) losses and LAE incurred, excluding development from prior accident years, as a percentage of net earned premium; and (ii) underwriting expenses incurred, including bad debt and net of fees, as a percentage of net written premium.

The primary differences between the calculation of the statutory accident year used by management and the statutory calendar year combined ratios is the exclusion of bad debt charge-offs and the inclusion of development on prior accident year loss and LAE reserves.

Certain expenses are treated differently under statutory accounting principles. Under GAAP, commissions, premium taxes and other variable costs incurred in connection with successfully writing new and renewal business are capitalized as deferred policy acquisition costs and amortized on a pro rata basis over the period in which the related premium is earned. On a statutory basis, these items are expensed as incurred. Additionally, bad debt charge-offs on agents' balances and premium receivables are included in the GAAP combined ratios.

The following tables present the underwriting income and combined ratio on a statutory accident year basis with reconciliations to "Earnings before income taxes" as presented on the Consolidated Statements of Earnings ($ in thousands). We do not allocate assets or "Provision for income taxes" to operating segments.

	Three months ended March 31, 2018
	Personal Auto				Commercial Auto					Classic Collector					Total
	Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)
Statutory accident year underwriting income	$	6,311	94.8	%	$	812		95.2	%	$	613		88.1	%	$	7,737		94.7	%
Bad debt charge-offs	3,363				392					(44		)			3,711
Favorable (unfavorable) development on prior accident years	10,555				(1,362		)			(337		)			8,856
Statutory calendar year underwriting income	20,229		90.5	%	(158		)	97.8	%	233			98.2	%	20,304			91.3	%
Statutory-to-GAAP underwriting income differences															6,005
GAAP calendar year underwriting income															26,309			92.6	%
Net investment income															9,786
Net realized gains on investments															(2,832		)
Other income															430
Interest expense															(3,509		)
Corporate general and administrative expenses															(4,743		)
Other expenses															(505		)
Earnings before income taxes															$	24,937
(1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

27

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

	Three months ended March 31, 2017
	Personal Auto				Commercial Auto					Classic Collector				Total
	Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)
Statutory accident year underwriting income	$	1,594	98.3	%	$	629		95.3	%	$	335	95.3	%	$	2,558		98.0	%
Bad debt charge-offs	2,251				291					10				2,552
Favorable (unfavorable) development on prior accident years	6,986				(874		)			256				6,368
Statutory calendar year underwriting income	10,831		95.2	%	45			97.1	%	602		88.3	%	11,478			95.4	%
Statutory-to-GAAP underwriting income differences														14
GAAP calendar year underwriting income														11,492			96.6	%
Net investment income														8,695
Net realized gains on investments														509
Other income														275
Interest expense														(3,512		)
Corporate general and administrative expenses														(2,271		)
Other expenses														(322		)
Earnings before income taxes														$	14,868
(1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

28

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

ITEM 2

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains certain “forward-looking statements” which anticipate results based on our estimates, assumptions and plans that are subject to uncertainty. We make these statements subject to the safe-harbor provisions of the Private Securities Litigation Reform Act of 1995. All statements in this report not dealing with historical results or current facts are forward-looking and we base them on estimates, assumptions and projections. Statements which include the words “assumes,” “believes,” “seeks,” “expects,” “may,” “should,” “intends,” “likely,” “targets,” “plans,” “anticipates,” “estimates” or the negative version of those words and similar statements of a future or forward-looking nature identify forward-looking statements. Examples of such forward-looking statements include statements relating to expectations concerning market conditions, premium growth, earnings, investment performance, expected losses, rate changes and loss experience.

The primary events or circumstances that could cause actual results to differ materially from what we expect include determinations with respect to reserve adequacy, realized gains or losses on the investment portfolio (including other-than-temporary impairments for credit losses), loss cost trends, and competitive conditions in our key Focus States (defined in Results of Operations – Underwriting – Premium). Additionally, risks and uncertainties related to the merger are set forth in the Joint Proxy Statement/Prospectus with Kemper, filed with the SEC on April 27, 2018, and incorporated herein by reference.We undertake no obligation to publicly update or revise any of the forward-looking statements. For a more detailed discussion of some of the foregoing risks and uncertainties which could cause actual results to differ from those contained in the forward-looking statements refer to Part I, Item 1A, Risk Factors of our Annual Report on Form 10-K for the year ended December 31, 2017.

OVERVIEW

On February 13, 2018, the Company entered into the Merger Agreement with Kemper and Kemper Merger Sub. The Merger Agreement provides that, subject to the satisfaction or waiver of certain conditions set forth therein, Kemper Merger Sub will merge with and into the Company in accordance with the Ohio General Corporation Law (the “merger”), with the Company surviving such merger as a wholly owned subsidiary of Kemper. The Company expects the closing of the merger to occur in the third quarter of 2018.

Gross written premium grew 13.7% during the first quarter of 2018 compared with the first quarter of 2017 primarily due to an increase in new application counts and higher average premium in California, higher average premium on renewal business in Texas as well as policy growth and higher average premium in our Commercial Auto product. Partially offsetting the growth was a decline in renewal business in Florida. Refer to Results of Operations – Underwriting – Premium for a more detailed discussion of our gross written premium.

Net earnings and diluted earnings per share for the three months ended March 31, 2018, were $20.1 million and $1.82, respectively, compared with $10.5 million and $0.94, respectively, for the same period of 2017. The increase in net earnings and diluted earnings per share for the three months ended March 31, 2018, was primarily due to a decrease in the accident year combined ratio from 98.5% at March 31, 2017, to 95.1% at March 31, 2018,

Included in net earnings for the three months ended March 31, 2018, was $7.0 million ($8.9 million pre-tax) of favorable development on prior accident year loss and LAE reserves. This development was primarily due to decreases in accident year 2017 estimates from California, with lower ultimate frequency estimates in collision and comprehensive coverages along with lower ultimate severity estimates for collision coverage, and from Florida, with decreased ultimate frequency estimates in collision, comprehensive and personal injury protection coverages. Included in net earnings for the three months ended March 31, 2017, was $4.1 million ($6.4 million pre-tax) of favorable development on prior accident year loss and LAE reserves. This development was primarily due to decreases in frequency estimates in California and Florida material damage coverages related to accident year 2016, partially offset by increases in severity estimates in personal injury protection coverages and in bodily injury coverages in our commercial auto product related to accident years 2016 and prior.

29

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following table displays combined ratio results by accident year developed through March 31, 2018:

	Accident Year Combined Ratio Developed Through								Prior Accident Year (Favorable) Unfavorable Development ($ in millions)
	Dec 2016		Mar 2017		Dec 2017		Mar 2018		Q1 2018
Accident Year
Prior											$	(0.2	)
2010	99.3	%	99.3	%	99.3	%	99.3	%	(0.0	)%	(0.1		)
2011	99.8	%	99.9	%	99.9	%	99.9	%	0.0	%	0.0
2012	99.6	%	99.5	%	99.4	%	99.4	%	(0.0	)%	(0.0		)
2013	94.8	%	94.9	%	94.8	%	94.7	%	(0.1	)%	(1.4		)
2014	94.4	%	94.4	%	94.5	%	94.5	%	(0.0	)%	(0.6		)
2015	98.3	%	98.4	%	98.5	%	98.4	%	(0.0	)%	(0.6		)
2016	98.4	%	97.8	%	96.7	%	96.6	%	(0.1	)%	(0.8		)
2017			98.5	%	96.5	%	96.1	%	(0.4	)%	(5.2		)
2018 YTD							95.1	%
											$	(8.9	)

Pre-tax net investment income increased from $8.7 millionduring the three months endedMarch 31, 2017, to $9.8 millionduring the three months endedMarch 31, 2018, primarily due to lower premium amortization on municipal bonds and commercial mortgage-backed securities during 2018.

Our book value per share increased0.2% from $65.46 at December 31, 2017, to $65.61 at March 31, 2018. This increase was primarily due to earnings partially offset by a decrease in unrealized gains on fixed maturity investments and shareholder dividends.

RESULTS OF OPERATIONS

Underwriting

Premium

Our insurance subsidiaries provide personal automobile insurance products with a concentration on nonstandard auto insurance. While there is no industry-recognized definition of nonstandard auto insurance, we believe that it is generally understood to mean coverage for drivers who, due to factors such as their driving record, driving experience, lapse in (or the absence of) prior insurance, or credit history, represent a higher than normal risk. Customers in the market for nonstandard auto insurance generally seek minimum required liability limits and are willing to accept restrictive coverages in exchange for more affordable insurance, given their risk profile. We also write commercial auto insurance and insurance for classic collectible automobiles (Classic Collector).

We are licensed to write insurance in all 50 states and the District of Columbia, but we focus our operations in targeted urban areas that we believe offer the greatest opportunity for premium growth and profitability.

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INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Our net earned premium was as follows ($ in thousands):

	Three months ended March 31,
	2018			2017			Change			% Change
Gross written premium:
Personal Auto	$	370,193		$	324,352		$	45,841		14.1	%
Commercial Auto	47,739			42,785			4,954			11.6	%
Classic Collector	3,660			3,565			95			2.7	%
Total gross written premium	421,592			370,702			50,890			13.7	%
Ceded reinsurance	(3,716		)	(2,608		)	(1,108		)	42.5	%
Net written premium	417,876			368,094			49,782			13.5	%
Change in unearned premium	(63,889		)	(26,726		)	(37,163		)	139.1	%
Net earned premium	$	353,987		$	341,368		$	12,618		3.7	%

The following table summarizes our policies in force:

	At March 31,
	2018	2017	Change		% Change
Personal Auto	712,893	706,783	6,110		0.9	%
Commercial Auto	58,708	53,756	4,952		9.2	%
Classic Collector	41,009	41,547	(538	)	(1.3	)%
Total policies in force	812,610	802,086	10,524		1.3	%

The increase in gross written premium in Personal Auto during the first quarter of 2018 was primarily due to premium growth in California and Texas, partially offset by a decline in Florida. New business in California grew during the first quarter of 2018 dueto an increase in application counts and higher average premium. Growth during the first three months in Texas was primarily due to higher average premium on renewal business. This growth was offset by a decline in renewal business in Florida primarily as a result of rate increases of 14.4% implemented during 2017.

The gross written premium growth in our Commercial Auto product during the first quarter of 2018 was primarily due to new and renewal policy growth and higher average premium in Texas, California and Florida.

Profitability

A key operating performance measure of insurance companies is underwriting profitability, as opposed to overall profitability or net earnings. We measure underwriting profitability by the combined ratio. When the combined ratio is under 100%, we consider underwriting results profitable; when the ratio is over 100%, we consider underwriting results unprofitable. The combined ratio does not reflect investment income, other income, interest expense, corporate general and administrative expenses, other expenses or federal income taxes.

In addition to reporting financial results in accordance with GAAP, we report results on a statutory basis for insurance regulatory purposes. We evaluate underwriting profitability based on a combined ratio calculated using statutory accounting principles. The statutory combined ratio represents the sum of the following ratios: (i) losses and LAE incurred as a percentage of net earned premium; and (ii) underwriting expenses incurred, net of installment and other fees, as a percentage of net written premium. Certain expenses are treated differently under statutory and GAAP accounting principles. Under GAAP, commissions, premium taxes and other variable costs incurred in connection with writing new and renewal business are capitalized as deferred policy acquisition costs and amortized on a pro rata basis over the period in which the related premium is earned. On a statutory basis, these items are expensed as incurred. Additionally, bad debt charge-offs on agent balances and premium receivables are included only in the GAAP combined ratios.

The discussion of underwriting results that follows focuses on statutory ratios and the components thereof, unless otherwise indicated.

31

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following table presents statutory and GAAP combined ratios:

	Three months ended March 31,
	2018						2017						% Point Change
	Loss & LAE Ratio		Underwriting Ratio		Combined Ratio		Loss & LAE Ratio		Underwriting Ratio		Combined Ratio		Loss & LAE Ratio		Underwriting Ratio		Combined Ratio
Personal Auto	74.3	%	16.2	%	90.5	%	79.6	%	15.6	%	95.2	%	(5.4	)%	0.6	%	(4.7	)%
Commercial Auto	81.7	%	16.1	%	97.8	%	81.0	%	16.1	%	97.1	%	0.7	%	0.0	%	0.7	%
Classic Collector	62.9	%	35.3	%	98.2	%	51.0	%	37.2	%	88.3	%	11.8	%	(1.9	)%	9.9	%
Total statutory ratios	75.0	%	16.3	%	91.3	%	79.5	%	15.9	%	95.4	%	(4.5	)%	0.5	%	(4.1	)%
Total statutory ratios excluding development	77.5	%	16.3	%	93.8	%	81.4	%	15.9	%	97.3	%	(3.9	)%	0.5	%	(3.4	)%
GAAP ratios	74.7	%	17.8	%	92.6	%	79.3	%	17.3	%	96.6	%	(4.6	)%	0.6	%	(4.0	)%
GAAP ratios excluding development	77.2	%	17.8	%	95.1	%	81.2	%	17.3	%	98.5	%	(3.9	)%	0.6	%	(3.4	)%

The statutory combined ratio for the three months ended March 31, 2018, decreased by 4.1points from the same period of 2017. The first quarter of 2018 included $8.9 million of favorable reserve development on prior accident year loss and LAE reserves primarily due to decreases in accident year 2017 estimates from California, with lower ultimate frequency estimates in collision and comprehensive coverages along with lower ultimate severity estimates for collision coverage, and from Florida, with decreased ultimate frequency estimates in collision, comprehensive and personal injury protection coverages. The first quarter of 2017 included $6.4 million of favorable development on prior accident year loss and LAE reserves primarily due to decreases in frequency estimates in California and Florida material damage coverages related to accident year 2016, partially offset by increases in severity estimates in personal injury protection coverages and in bodily injury coverages in our commercial auto product related to accident years 2016 and prior. Excluding the effect of development, the statutory combined ratio decreased3.4points during the first quarter of 2018, compared with the same period of 2017.

The GAAP combined ratio for the three months ended March 31, 2018, decreased by 4.0points from the same period of 2017. Excluding the effect of development, the GAAP combined ratio decreased by 3.4points during the first quarter of 2018 primarily due to an increase in average earned premium and lower estimates of ultimate frequency and severity.

Net recoveries from catastrophes were $0.1 million for the three months ended March 31, 2018, compared with net losses from catastrophes of $1.5 million for the same period of 2017.

The 4.7pointsdecrease in the Personal Auto combined ratio for the three months ended March 31, 2018, compared with the same period of 2017, was primarily due to relatively flat loss cost trends and an increase in average earned premium in California and lower frequency estimates in Florida.

The 0.7pointincrease in the Commercial Auto combined ratio for the three months ended March 31, 2018, was primarily due to an increase in frequency and severity estimates in our bodily injury product.

Installment and Other Fee Income

	Three months ended
	March 31,
($ in thousands)	2018		2017
Installment and other fee income	$	27,395	$	26,739

The increase in installment and other fee income charged to policyholders during the first three months of 2018 was primarily related to an increase in installment fees.

32

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Net Investment Income

Net investment income is comprised of gross investment income less investment management fees and expenses, as shown in the following table ($ in thousands):

	Three months ended
	March 31,
	2018			2017
Gross investment income:
Interest income on fixed maturities, cash and cash equivalents	$	10,017		$	8,890
Dividends on equity securities	317			376
Gross investment income	10,335			9,266
Investment expenses	(548		)	(570		)
Net investment income	9,786			8,695
Average investment balance, at cost	$	1,609,057		$	1,542,245
Annualized returns excluding realized gains and losses	2.4%			2.3%
Annualized returns including realized gains and losses	2.4%			2.4%

Pre-tax net investment income increased from $8.7 millionduring the three months endedMarch 31, 2017, to $9.8 millionduring the three months endedMarch 31, 2018, primarily due to lower premium amortization on municipal bonds and commercial mortgage-backed securities during 2018.

New money rates are higher than the book yield on the portfolio. Therefore, we expect investment returns will gradually increase as proceeds from maturing or prepaid investments are reinvested at the higher yields.

The following table provides information about our fixed maturity investments at March 31, 2018, which are sensitive to interest rate risk. The table shows expected principal cash flows by expected maturity date for each of the five subsequent years and collectively for all years thereafter. Callable bonds and notes are included based on call date or maturity date depending upon which date produces the most conservative yield. Mortgage Backed Securities (MBS) and sinking fund issues are included based on maturity year adjusted for expected payment patterns.

	Expected Principal Cash Flows
($ in thousands)	MBS and ABS only		Excluding MBS and ABS		Total		Maturing Book Yield
For the period ending December 31,
2018	$	29,268	$	16,050	$	45,318	3.1%
2019	44,763		128,762		173,524		2.4%
2020	53,990		165,164		219,153		2.8%
2021	51,694		199,374		251,069		2.9%
2022	53,905		153,245		207,150		2.8%
Thereafter	314,171		253,941		568,112		3.1%
Total	$	547,791	$	916,535	$	1,464,326	2.9%

The cash flows presented take into consideration historical relationships of market yields and prepayment rates. However, the actual prepayment rate may differ from historical trends, resulting in actual principal cash flows that differ from those presented above.

33

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Net Realized Gains (Losses) on Investments

We recorded net realized gains (losses) on sales, impairments for unrealized losses deemed other-than-temporary and net holding period losses on equity securities as follows (before tax, $ in thousands):

	Three months ended March 31, 2018
	Net Realized (Losses) Gains on Sales		Net Impairment Losses Recognized in Earnings		Net Holding Period Losses		Total Net Realized (Losses) Gains on Investments
Fixed maturities	(519	)	(1,588	)	0		(2,107	)
Equity securities	1,881		0		(2,607	)	(726	)
Short-term investments	1		0		0		1
Total	1,363		(1,588	)	(2,607	)	(2,832	)

	Three months ended March 31, 2017
	Net Realized (Losses) Gains on Sales		Net Impairment Losses Recognized in Earnings		Total Net Realized (Losses) Gains on Investments
Fixed maturities	(52	)	(10	)	(62		)
Equity securities	569		0		569
Short-term investments	1		0		1
Total	519		(10	)	$	509

For our securities held with unrealized losses, we believe, based on our analysis, that (i) we will recover our cost basis in these securities; and (ii) we do not intend to sell the securities nor is it more likely than not that there will be a requirement to sell the securities before they recover in value. Should either of these beliefs change with regard to a particular security, a charge for impairment would likely be required. While it is not possible to predict accurately if or when a specific security will become impaired, charges for other-than-temporary impairments could be material to results of operations in a future period.

Of the $1.6 million impairments recorded during the first quarter of 2018, $1.5 million were as a result of our transition to a new investment policy statement and the related repositioning of our portfolio. These securities, impaired as we have an intent to sell, are expected to be sold by the end of May 2018.

Interest Expense

	Three months ended
	March 31,
($ in thousands)	2018		2017
5.0% Senior Notes	$	3,438	$	3,438
Amortization of debt issuance costs	56		53
Capital leases	15		21
Total	$	3,509	$	3,512

At March 31, 2018, we had $275 million principal outstanding of senior notes. These notes carry a coupon rate of 5.0% and require no principal payment until maturity in September 2022. Refer to Note 5 – Long-Term Debt to the Consolidated Financial Statements for additional information on the 5.0% Senior Notes.

34

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Income Taxes

Our GAAP effective tax rate was 19.5% and 29.3% for the three months ended March 31, 2018, and 2017, respectively. The GAAP effective tax rate has decreased in 2018 primarily as a result of the enacted tax rate change from 35% to 21% under the Tax Cuts and Jobs Act of 2017 (TCJA). Refer to Note 6 – Income Taxes to the Consolidated Financial Statements for additional information on income taxes.

The TCJA also changed the interest rate used to calculate the discounted tax loss reserves and required the setup of a transition liability to be ratably recognized in income over eight years. Since neither the new interest rate nor the discount factors have not been published by the Internal Revenue Service, we believe that the estimates used to calculate the deferred tax asset and liability relating to these two items as of December 31, 2017, continue to be reasonable estimates under SAB 118.

LIQUIDITY AND CAPITAL RESOURCES

Sources of Funds

We are a holding company and our insurance subsidiaries conduct our operations. Accordingly, we will have continuing cash needs for administrative expenses, the payment of interest on borrowings, shareholder dividends, share repurchases and taxes.

Funds to meet expenditures at the holding company level come primarily from dividends and tax payments from the insurance subsidiaries, as well as cash and investments held by the holding company. As of March 31, 2018, the holding company had $170.7 million of cash and investments. In 2018 our insurance subsidiaries may pay us up to $67.9 million in ordinary dividends without prior regulatory approval. For the three months ended March 31, 2018, our insurance subsidiaries have paid us ordinary dividends of $16.8 million.

Our insurance subsidiaries generate liquidity to satisfy their obligations primarily by collecting and investing premiums in advance of paying claims and generating investment income on their $1.4 billion investment portfolio. Our insurance subsidiaries generated positive cash flows from operations of $30.9 million during the three months ended March 31, 2018, compared with positive operating cash flows of $28.4 million during the same period of 2017.

At March 31, 2018, we had $275 million principal outstanding of 5.0% Senior Notes. The 5.0% Senior Notes accrue interest at 5.0%, payable semiannually each March and September. Refer to Note 5 – Long-Term Debt to the Consolidated Financial Statements for more information on our long-term debt.

In August 2017 we renewed our agreement for a $50 million three-year revolving credit facility (the “Credit Agreement”) that requires us to meet certain financial and other covenants. We are currently in compliance with all covenants under the Credit Agreement, and as of March 31, 2018, there were no borrowings outstanding against it.

On February 29, 2016, we filed a "shelf" registration statement with the Securities and Exchange Commission registering securities, and as long as it remains effective, it will allow us to sell any combination of senior or subordinated debt securities, common stock, preferred stock, warrants, depositary shares, purchase contracts and units in one or more offerings should we choose to do so in the future. This shelf registration statement expires March 1, 2019.

Uses of Funds

Our quarterly dividend is currently $0.58 per share. At this current amount, our 2018 annualized dividend payments would be approximately $25.4 million.

On November 4, 2014, our Board of Directors increased the authority of our share and debt repurchase program to a total of $75 million and extended the date to execute the program to December 31, 2016, from December 31, 2014. On November 1, 2016, our Board approved the extension of the date to execute the program from December 31, 2016, to December 31, 2017, and on November 2, 2017, approved an extension to December 31, 2018. In addition, the Merger Agreement prohibits us from repurchasing shares between the signing of the Merger Agreement (i.e., February 13, 2018) and the closing of the merger. There were no share repurchases during the first three months of 2018.

We believe that cash balances, cash flows generated from operations or borrowings, and maturities and sales of investments are adequate to meet our future liquidity needs and those of our insurance subsidiaries.

35

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Reinsurance

Premium ceded under all reinsurance agreements for the three months ended March 31, 2018, was $3.7 million compared with $2.6 million for the same period of 2017. Refer to Note 11 - Reinsurance to the Consolidated Financial Statements of our Form 10-K for the year ended December 31, 2017, for more information on our reinsurance contracts.

Investments

Our consolidated investment portfolio at March 31, 2018, contained approximately $1.5 billion in fixed maturity securities and $90.5 million in equity securities. All of these are carried at fair value with unrealized gains and losses on fixed maturity securities reported in accumulated other comprehensive income, a separate component of shareholders’ equity, on an after-tax basis. As of January 1, 2018, unrealized gains and losses on equity securities are recognized through net income. At March 31, 2018, we had pre-tax net unrealized losses of $15.0 million on fixed maturities. The average option adjusted duration of our fixed maturity portfolio was 4.0 years at March 31, 2018, compared with 3.3 years at December 31, 2017.

Since we carry all of these securities at fair value in our balance sheet, there is virtually no effect on liquidity or financial condition upon the sale and ultimate realization of unrealized gains and losses.

Approximately 91.2% of our fixed maturity investments at March 31, 2018, were rated “investment grade,” and, as of the same date, the average credit rating of our fixed maturity portfolio was AA-. Investment grade securities generally bear lower yields and have lower degrees of risk than those that are unrated or non-investment grade. We believe that a high quality investment portfolio is more likely to generate a stable and predictable investment return.

Fair values of instruments are based on (i) quoted prices in active markets for identical assets (Level 1); (ii) quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs are observable in active markets (Level 2); or (iii) valuations derived from valuation techniques in which one or more significant inputs are unobservable in the marketplace (Level 3).

Our Level 1 securities are U.S. Treasury securities, an exchange-traded fund and equity securities held in a rabbi trust. Our Level 2 securities are comprised of securities whose fair value was determined using observable market inputs. Our Level 3 securities are comprised of (i) securities for which there is no active or inactive market for similar instruments; (ii) securities whose fair value is determined based on unobservable inputs; and (iii) securities that nationally recognized statistical rating organizations do not rate.

36

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Summarized information for our investment portfolio at March 31, 2018, was as follows ($ in thousands):

	Amortized Cost		Fair Value		% of Total  Fair Value
Fixed Maturities:
U.S. government	$	125,887	$	124,757	7.9	%
State and municipal	297,994		296,814		18.7	%
Mortgage- and asset-backed:
Residential mortgage-backed securities	372,319		365,007		23.0	%
Commercial mortgage-backed securities	63,053		62,061		3.9	%
Asset-backed securities (ABS):
Collateralized loan obligations	42,042		41,996		2.6	%
Auto loans	32,383		32,162		2.0	%
Equipment leases	5,983		5,969		0.4	%
Credit card	24,785		24,530		1.5	%
All other	23,818		23,827		1.5	%
Total ABS	129,010		128,484		8.1	%
Total mortgage- and asset-backed	564,382		555,552		35.0	%
Corporates
Investment grade	401,681		398,594		25.1	%
Non-investment grade	122,996		122,213		7.7	%
Total corporates	524,676		520,807		32.8	%
Total fixed maturities	1,512,939		1,497,930		94.3	%
Equity securities	65,913		90,498		5.7	%
Short-term investments	0		0		0.0	%
Total investments	$	1,578,852	$	1,588,428	100.0	%

We categorize securities by rating based upon available ratings issued by Moody's, Standard & Poor's or Fitch. If all three ratings are available but not equivalent, we exclude the lowest rating and the lower of the remaining ratings is used. If ratings are only available from two agencies, the lowest is used. This methodology is consistent with that used by the major bond indices.

The following table presents the credit rating and fair value of our fixed maturity portfolio by major security type at March 31, 2018 ($ in thousands):

	Rating
	AAA		AA		A		BBB		Non-investment Grade		Total Fair Value		% of Total Exposure
U.S. government	$	124,757	$	0	$	0	$	0	$	0	$	124,757	8.3	%
State and municipal	44,719		168,372		80,741		2,216		766		296,814		19.8	%
Mortgage- and asset-backed	480,097		49,168		10,573		6,450		9,263		555,552		37.1	%
Corporates	0		19,712		175,310		203,572		122,213		520,807		34.8	%
Total fair value	$	649,573	$	237,252	$	266,624	$	212,238	$	132,243	$	1,497,930	100.0	%
% of total fair value	43.4%		15.8%		17.8%		14.2%		8.8%		100.0%

37

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

ITEM 3

Quantitative and Qualitative Disclosures about Market Risk

As of March 31, 2018, there were no material changes to the information provided on Form 10-K for the year ended December 31, 2017, under the caption “Exposure to Market Risk” in Management’s Discussion and Analysis of Financial Condition and Results of Operations. Refer to Item 2 Management’s Discussion and Analysis under the caption “Investments” for updates to disclosures made under the subcaption “Credit Risk” of our Form 10-K for the year ended December 31, 2017.

ITEM 4

Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We carried out an evaluation, under the supervision and with the participation of the Company’s management, including its principal executive officer and principal financial officer, of the effectiveness of our disclosure controls and procedures (as defined in Securities Exchange Act Rules 13a-15(e) and 15d-15(e)) as of March 31, 2018. Based on that evaluation, we concluded that the controls and procedures are effective in providing reasonable assurance that material information required to be disclosed in our reports filed with or submitted to the Securities and Exchange Commission (SEC) under the Securities Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate.

Changes in Internal Control over Financial Reporting

During the fiscal quarter ended March 31, 2018, there have been no changes to our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II

OTHER INFORMATION

ITEM 1

Legal Proceedings

We have not become a party to any material legal proceedings and there have not been any material developments in our legal proceedings disclosed on Form 10-K for the year ended December 31, 2017. For a description of our previously reported legal proceedings, refer to Part I, Item 3, Legal Proceedings of our Form 10-K for the year ended December 31, 2017.

ITEM 1A

Risk Factors

Other than the risks relating to entering into the Merger Agreement referred to in Part I, Item 2 "Cautionary Statement Regarding Forward-Looking Statements," there have been no material changes in our risk factors as disclosed on Form 10-K for the year ended December 31, 2017. For a description of our previously reported risk factors, refer to Part I, Item 1A, Risk Factors of our Form 10-K for the year ended December 31, 2017.

38

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

ITEM 2

Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

Period	Total Number of Shares Purchased (a)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value that May Yet Be Purchased Under the Plans or Programs (b)
January 1, 2018 - January 31, 2018	0	$	0.00	0	$	22,531,509
February 1, 2018 - February 28, 2018	0	0.00		0	22,531,509
March 1, 2018 - March 31, 2018	5,030	118.10		0	22,531,509
Total	5,030	$	118.10	0	$	22,531,509

(a) 5,030 shares surrendered to cover the withholding taxes related to the issuance of shares under the performance share plan.

(b) On November 4, 2014, our Board of Directors increased the authority under our current share and debt repurchase plan to a total of $75.0 million and extended the date to execute the program to December 31, 2016, from December 31, 2014. On November 1, 2016, our Board approved the extension of the date to execute the program from December 31, 2016, to December 31, 2017, and on November 2, 2017, approved an extension to December 31, 2018.

ITEM 6

Exhibit 31.1	Certification of the Chief Executive Officer under Exchange Act Rule 13a-14(a)
Exhibit 31.2	Certification of the Chief Financial Officer under Exchange Act Rule 13a-14(a)
Exhibit 32	Certification of the Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350
Exhibit 101.INS	XBRL Instance Document
Exhibit 101.SCH	XBRL Taxonomy Extension Schema Document (1)
Exhibit 101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document (1)
Exhibit 101.DEF	XBRL Taxonomy Extension Definition Linkbase Document (1)
Exhibit 101.LAB	XBRL Taxonomy Extension Label Linkbase Document (1)
Exhibit 101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document (1)
(1) Furnished with this report, in accordance with Rule 406T of Regulation S-T, the information in these exhibits shall not be deemed to be "filed" for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, or otherwise subject to liability under that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, except as expressly set forth by specific reference in such filing.

39

INFINITY PROPERTY AND CASUALTY CORPORATION FORM 10-Q

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, Infinity Property and Casualty Corporation has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Infinity Property and Casualty Corporation
	BY:	/s/ ROBERT H. BATEMAN
April 30, 2018		Robert H. Bateman
		Executive Vice President, Chief Financial Officer and Treasurer

40

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Glen N. Godwin, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Infinity Property and Casualty Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

April 30, 2018	BY:	/s/ GLEN N. GODWIN
		Glen N. Godwin
		Chief Executive Officer
		(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Robert H. Bateman, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Infinity Property and Casualty Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

April 30, 2018	BY:	/s/ ROBERT H. BATEMAN
		Robert H. Bateman
		Chief Financial Officer
		(Principal Financial Officer)

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

In connection with the filing with the Securities and Exchange Commission of the Quarterly Report of Infinity Property and Casualty Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2018 (the “Report”), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. Section 1350, that to the best of his knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

April 30, 2018	BY:	/s/ GLEN N. GODWIN
		Glen N. Godwin Chief Executive Officer
April 30, 2018	BY:	/s/ ROBERT H. BATEMAN
		Robert H. Bateman Executive Vice President, Chief Financial Officer and Treasurer

A signed original of this written statement will be retained by the Registrant and

furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 26, 2018
Document Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Entity Registrant Name	INFINITY PROPERTY & CASUALTY CORP
Entity Central Index Key	0001195933
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		10,941,936

XML

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%)

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 20,083	$ 10,510
Other comprehensive income before tax:
Net change in post-retirement benefit liability	(2)	(13)
Unrealized gains on investments(1):
Unrealized holding (losses) gains arising during the period	(18,344)	10,664
Less: Reclassification adjustments for losses (gains) included in net earnings	2,106	(509)
Unrealized (losses) gains on investments, net	(16,238)	10,155
Other comprehensive (loss) income, before tax	(16,240)	10,143
Income tax benefit (expense) related to components of other comprehensive income	3,410	(3,550)
Other comprehensive (loss) income, net of tax	(12,829)	6,593
Comprehensive income	$ 7,254	$ 17,102

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments:
Fixed maturities – at fair value (amortized cost $1,512,939 and $1,439,878)	$ 1,497,930	$ 1,441,107
Equity securities – at fair value (cost $65,913 and $68,812)	90,498	96,004
Short-term investments – at fair value (amortized cost $0 and $2,541)	0	2,541
Total investments	1,588,428	1,539,653
Cash and cash equivalents	88,793	107,589
Accrued investment income	10,098	13,079
Agents’ balances and premium receivable, net of allowances for doubtful accounts of $13,238 and $15,262	557,206	507,963
Property and equipment, net of accumulated depreciation of $87,945 and $84,776	78,732	82,453
Prepaid reinsurance premium	482	1,032
Recoverables from reinsurers (includes $3,124 and $(1,269) on paid losses and LAE)	22,674	30,340
Deferred policy acquisition costs	98,672	88,300
Current and deferred income taxes	9,091	10,543
Receivable for securities sold	120	1,700
Other assets	21,896	16,557
Goodwill	75,275	75,275
Total assets	2,551,466	2,474,484
Liabilities:
Unpaid losses and loss adjustment expenses	701,006	715,098
Unearned premium	691,464	627,575
Long-term debt (fair value $286,330 and $290,824)	273,865	273,809
Commissions payable	15,844	16,743
Payable for securities purchased	40,375	5,615
Other liabilities	110,996	119,831
Total liabilities	1,833,550	1,758,672
Commitments and contingencies (See Note 9)
Shareholders’ equity:
Common stock, no par value (50,000,000 shares authorized; 21,879,505 and 21,867,436 shares issued)	21,908	21,888
Additional paid-in capital	385,346	383,567
Retained earnings	824,932	793,077
Accumulated other comprehensive income, net of tax	(11,202)	19,756
Treasury stock, at cost (10,937,569 and 10,932,539 shares)	(503,069)	(502,475)
Total shareholders’ equity	717,916	715,812
Total liabilities and shareholders’ equity	$ 2,551,466	$ 2,474,484

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost	$ 1,512,939	$ 1,439,878
Equity securities, cost	65,913	68,812
Short term investments, amortized cost	0	2,541
Agents' balances and premium receivable, allowance for doubtful accounts	13,238	15,262
Property and equipment, accumulated depreciation	87,945	84,776
Recoverable from reinsurers, paid losses and loss adjustment expenses	(3,124)	(1,269)
Long-term debt, fair value	$ 289,831	$ 290,824
Common stock, par value (usd per share)	$ 0	$ 0
Common stock, shares authorized (shares)	50,000,000	50,000,000
Common stock, shares issued (shares)	21,879,505	21,867,436
Treasury stock, shares (shares)	10,937,569	10,932,539

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Consolidated Statements Of Changes In Shareholders' Equity - USD ($)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income, Net of Tax	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principle	$ (3,808,000)	$ 0	$ 0	$ (3,808,000)	$ 0	$ 0
Beginning Balance at Dec. 31, 2016	699,187,000	21,829,000	378,745,000	777,695,000	7,907,000	(486,990,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	10,510,000			10,510,000
Net change in post-retirement benefit liability	(8,000)				(8,000)
Change in unrealized gain on investments	6,579,000				6,579,000
Change in non-credit component of impairment losses on fixed maturities	22,000				22,000
Comprehensive income	17,102,000
Dividends paid to common shareholders	(6,402,000)			(6,402,000)
Shares issued and share-based compensation expense	1,449,000	18,000	1,430,000
Acquisition of treasury stock	(2,303,000)					(2,303,000)
Ending Balance at Mar. 31, 2017	705,225,000	21,848,000	380,175,000	777,994,000	14,500,000	(489,293,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	34,214,000			34,214,000
Net change in post-retirement benefit liability	(124,000)				(124,000)
Change in unrealized gain on investments	5,074,000				5,074,000
Change in non-credit component of impairment losses on fixed maturities	306,000				306,000
Comprehensive income	39,469,000
Dividends paid to common shareholders	(19,131,000)			(19,131,000)
Shares issued and share-based compensation expense	3,432,000	40,000	3,391,000
Acquisition of treasury stock	(13,182,000)					(13,182,000)
Ending Balance at Dec. 31, 2017	715,812,000	21,888,000	383,567,000	793,077,000	19,756,000	(502,475,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principle	(10,000)	0	0	18,118,000	(18,128,000)	0
Net earnings	20,083,000			20,083,000
Net change in post-retirement benefit liability	(1,000)				(1,000)
Change in unrealized gain on investments	(12,980,000)				(12,980,000)
Change in non-credit component of impairment losses on fixed maturities	152,000				152,000
Comprehensive income	7,254,000
Dividends paid to common shareholders	(6,346,000)			(6,346,000)
Shares issued and share-based compensation expense	1,800,000	21,000	1,779,000
Acquisition of treasury stock	(594,000)					(594,000)
Ending Balance at Mar. 31, 2018	$ 717,916,000	$ 21,908,000	$ 385,346,000	$ 824,932,000	$ (11,202,000)	$ (503,069,000)

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Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Activities:
Net earnings	$ 20,083	$ 10,510
Adjustments:
Depreciation	3,696	4,177
Amortization	4,840	5,327
Net realized gains on investments	2,832	(509)
Loss on disposal of property and equipment	10	(2)
Share-based compensation expense	1,731	1,384
Activity related to rabbi trust	(13)	69
Change in accrued investment income	2,980	246
Change in agents’ balances and premium receivable	(49,243)	(17,118)
Change in reinsurance receivables	8,216	917
Change in deferred policy acquisition costs	(10,372)	(2,957)
Change in other assets	(804)	(4,505)
Change in unpaid losses and loss adjustment expenses	(14,092)	(6,508)
Change in unearned premium	63,889	26,943
Change in other liabilities	(9,815)	5,565
Net cash provided by operating activities	23,939	23,538
Investing Activities:
Purchases of fixed maturities	(403,516)	(120,831)
Purchases of equity securities	0	(1,900)
Purchases of property and equipment	(313)	(889)
Maturities and redemptions of fixed maturities	32,497	43,319
Proceeds from sale of fixed maturities	328,064	37,671
Proceeds from sale of equity securities	5,013	2,002
Proceeds from sale of short-term investments	2,528	2,400
Proceeds from sale of property and equipment	0	19
Net cash used in investing activities	(35,727)	(38,209)
Financing Activities:
Proceeds from stock options exercised and employee stock purchases	70	65
Principal payments under capital lease obligations	(138)	(135)
Acquisition of treasury stock	(594)	(2,296)
Dividends paid to shareholders	(6,346)	(6,402)
Net cash used in financing activities	(7,009)	(8,768)
Net increase (decrease) in cash and cash equivalents	(18,796)	(23,438)
Cash and cash equivalents at beginning of period	107,589	92,800
Cash and cash equivalents at end of period	$ 88,793	$ 69,361

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Significant Reporting And Accounting Policies

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Significant Reporting And Accounting Policies

Significant Reporting and Accounting Policies

Nature of Operations

We are a holding company that provides insurance through our subsidiaries for personal auto with a concentration on nonstandard risks, commercial auto and classic collectors. Although licensed to write insurance in all 50 states and the District of Columbia, we focus on select states that we believe offer the greatest opportunity for premium growth and profitability.

Basis of Consolidation and Reporting

The accompanying consolidated financial statements are unaudited and should be read in conjunction with our Annual Report on Form 10-K (Form 10-K) for the year ended December 31, 2017. This Quarterly Report on Form 10-Q, including the Condensed Notes to Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations, focuses on our financial performance since the beginning of the year.

These financial statements reflect certain adjustments necessary for a fair presentation of our results of operations and financial position. Such adjustments consist of normal, recurring accruals recorded to accurately match expenses with their related revenue streams and the elimination of all significant intercompany transactions and balances.

We have evaluated events that occurred after March 31, 2018, for recognition or disclosure in our financial statements and the notes to the financial statements.

Schedules may not foot due to rounding.

Estimates

We based certain accounts and balances within these financial statements upon our estimates and assumptions. The amount of reserves for claims not yet paid, for example, is an item that we can only record by estimation. Unrealized capital gains and losses on investments are subject to market fluctuations, and we use judgment in the determination of whether unrealized losses on certain securities are temporary or other-than-temporary. Should actual results differ significantly from these estimates, the effect on our results of operations could be material. The results of operations for the periods presented may not be indicative of our results for the entire year.

Recently Adopted Accounting Standards

In February 2018 the FASB issued an ASU allowing a reclassification from accumulated other comprehensive income to retained earnings and consequently eliminating the stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017. We elected to early adopt the ASU and applied the amendment in the period of adoption, with a cumulative-effect adjustment of $0.4 million reclassified from accumulated other comprehensive income to retained earnings.

In October 2016 the FASB issued an ASU related to the recognition of income tax on intra-entity transfers of assets other than inventory. The guidance requires the income tax to be recognized when the transfer occurs rather than when the asset is sold to an outside party. We adopted the change on a modified retrospective basis, with a cumulative-effect adjustment of less than $(0.1) million recorded to retained earnings as of January 1, 2018.

In January 2016 the FASB issued an ASU amending the guidance on classifying and measuring financial instruments. The guidance requires equity securities to be measured at fair value and changes in that fair value to be recognized through net income. We adopted the change on a modified retrospective basis as of January 1, 2018, with a cumulative-effect adjustment of $17.7 million reclassified from other comprehensive income to retained earnings.

In May 2014 the FASB issued an ASU related to the accounting for revenue from contracts with customers. Insurance contracts were excluded from the scope of the guidance. As an insurance-entity, we are largely exempt from the provisions of this standard, with only fee income subject to this new standard. Processing and policy fees were generally earned at the inception of the policy under previous guidance but are earned over the life of the policy under current guidance. The guidance was adopted as of January 1, 2018, using a full retrospective approach with a cumulative-effect adjustment to the balance sheet, which reduced shareholders' equity by $4.5 million.

The following table illustrates the effect of adopting this standard on the Consolidated Balance Sheets ($ in millions):

	December 31, 2017
	As Reported		As Adjusted		Difference
Agents' balances and premium receivable	$	508.1	$	508.0	$	(0.1	)
Current and deferred income taxes	9.4		10.5		1.2
Total assets	2,473.4		2,474.5		1.1
Other liabilities	114.3		119.8		5.5
Shareholders' equity	720.3		715.8		(4.5		)
Total liabilities and shareholders' equity	2,473.4		2,474.5		1.1

The following table illustrates the effect of adopting this standard on the Consolidated Statements of Earnings (in millions, except per share amounts):        

	Three months ended March 31, 2017
	As Reported		As Adjusted		Difference
Installment and other fee income	$	26.9	$	26.7	$	(0.2	)
Total revenues	377.8		377.6		(0.2		)
Earnings before income taxes	15.1		14.9		(0.2		)
Provision for income taxes	4.4		4.4		(0.1		)
Net earnings	10.6		10.5		(0.1		)
Net earnings per common share:
Basic	$	0.97	$	0.96	$	(0.01	)
Diluted	0.96		0.94		(0.02		)

We also adjusted the Consolidated Statements of Changes in Shareholders' Equity and the Consolidated Statements of Cash Flows for these changes for the three months ended March 31, 2017.

Recently Issued Accounting Standards

In March 2017 the FASB issued an ASU related to the amortization of premium on purchased callable debt securities. The guidance amends the amortization period for certain purchased callable debt securities held at a premium. Securities that contain explicit, noncontingent call features that are callable at fixed prices and on preset dates should shorten the amortization period for the premium to the earliest call date (and if the call option is not exercised, the effective yield is reset using the payment terms of the debt security). The standard is effective for fiscal years, and interim period within those years, beginning after December 15, 2018, and is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

In June 2016 the FASB issued an ASU related to the accounting for credit losses. The guidance generally requires credit losses on available-for-sale debt securities to be recognized as an allowance rather than as a reduction to the amortized cost of a security. The standard is effective for fiscal periods beginning after December 15, 2019, and interim periods within the year of adoption, with prospective application of the ASU required for debt securities for which an other-than-temporary impairment has been recognized before the implementation date. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

In February 2016 the FASB issued an ASU related to the accounting for leases. The guidance requires lessees to recognize lease assets and liabilities on the balance sheet. The standard is effective for fiscal years beginning after December 15, 2018, and is to be applied retrospectively, with an option to use a modified retrospective approach for leases which commenced prior to the effective date of this ASU. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

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Computation Of Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Computation of Net Earnings per Share

Computation of Net Earnings per Share

The following table illustrates our computations of basic and diluted net earnings per common share ($ in thousands, except per

share figures):

	Three months ended
	March 31,
	2018		2017
Net earnings	$	20,083	$	10,510
Average basic shares outstanding	10,915		10,998
Basic net earnings per share	$	1.84	$	0.96
Average basic shares outstanding	10,915		10,998
Restricted stock not vested	8		33
Dilutive effect of Performance Share Plan	86		96
Average diluted shares outstanding	11,009		11,127
Diluted net earnings per share	$	1.82	$	0.94

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Fair Value

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value

Fair Value

Fair values of instruments are based on:

(i) quoted prices in active markets for identical assets (Level 1);

(ii) quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs are observable in active markets (Level 2); or

(iii) valuations derived from valuation techniques in which one or more significant inputs are unobservable in the marketplace (Level 3).

The following tables present, for each of the fair value hierarchy levels, our assets and liabilities for which we report fair value on a recurring basis ($ in thousands):

	Fair Value
March 31, 2018	Level 1			Level 2			Level 3			Total
Cash and cash equivalents	$	88,793		$	0		$	0		$	88,793
Fixed maturity securities:
U.S. government	124,757			0			0			124,757
State and municipal	0			296,048			766			296,814
Mortgage-backed securities:
Residential	0			365,007			0			365,007
Commercial	0			59,204			2,857			62,061
Total mortgage-backed securities	0			424,211			2,857			427,068
Asset-backed securities	0			110,836			17,647			128,484
Corporates	0			520,698			109			520,807
Total fixed maturities	124,757			1,351,794			21,379			1,497,930
Equity securities	90,498			0			0			90,498
Short-term investments	0			0			0			0
Total cash and investments	$	304,048		$	1,351,794		$	21,379		$	1,677,221
Percentage of total cash and investments	18.1		%	80.6		%	1.3		%	100.0		%
December 31, 2017
Cash and cash equivalents	$	107,589		$	0		$	0		$	107,589
Fixed maturity securities:
U.S. government	60,528			0			0			60,528
State and municipal	0			490,724			3,488			494,211
Mortgage-backed securities:
Residential	0			350,992			0			350,992
Commercial	0			30,569			0			30,569
Total mortgage-backed securities	0			381,561			0			381,561
Asset-backed securities	0			62,266			152			62,418
Corporates	0			442,281			108			442,390
Total fixed maturities	60,528			1,376,832			3,748			1,441,107
Equity securities	96,004			0			0			96,004
Short-term investments	0			2,541			0			2,541
Total cash and investments	$	264,121		$	1,379,373		$	3,748		$	1,647,242
Percentage of total cash and investments	16.0		%	83.7		%	0.2		%	100.0		%

We do not report our long-term debt at fair value in the Consolidated Balance Sheets. The $286.3 million and $290.8 million fair value of our long-term debt at March 31, 2018, and December 31, 2017, respectively, would be included in Level 2 of the fair value hierarchy if it were reported at fair value.

Level 1 includes cash and cash equivalents, U.S. Treasury securities, an exchange-traded fund and equities held in a rabbi trust which funds our Supplemental Employee Retirement Plan (SERP). Level 2 includes securities whose fair value was determined using observable market inputs. Level 3 securities are comprised of (i) securities for which there is no active or inactive market for similar instruments; (ii) securities whose fair value is determined based on unobservable inputs; and (iii) securities, other than those backed by the U.S. Government, that are not rated by a nationally recognized statistical rating organization (NRSRO). We recognize transfers between levels at the beginning of the reporting period.

A third party nationally recognized pricing service provides the fair value of securities in Level 2. A summary of the significant valuation techniques and market inputs for each class of security follows:

U.S. Government: In determining the fair value for U.S. Government securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data and industry and economic events.

State and municipal: In determining the fair value for state and municipal securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data and industry and economic events.

Mortgage-backed securities: In determining the fair value for mortgage-backed securities we use the market approach and to a lesser extent the income approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data, industry and economic events and monthly payment information.

Asset-backed securities: In determining the fair value for asset-backed securities we use the market approach and to a lesser extent the income approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data, industry and economic events, monthly payment information and collateral performance.

Corporate: In determining the fair value for corporate securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads (for investment grade securities), observations of equity and credit default swap curves (for high-yield corporates), reference data and industry and economic events.

We review the third party pricing methodologies quarterly and test for significant differences between the market price used to value the security and recent sales activity.

The following tables present the progression in the Level 3 fair value category ($ in thousands):

Three months ended March 31, 2018	State and Municipal			Mortgage- Backed Securities		Asset-Backed Securities			Corporates			Total
Balance at beginning of period	$	3,488		$	0	$	152		$	108		$	3,748
Total (losses) gains, unrealized or realized
Included in net earnings	(10		)	0		(0		)	(0		)	(10		)
Included in other comprehensive income	3			10		27			1			41
Purchases	0			2,847		17,729			0			20,576
Sales	(3,360		)	0		0			0			(3,360		)
Settlements	0			0		(261		)	0			(261		)
Transfers in	645			0		0			0			645
Balance at end of period	$	766		$	2,857	$	17,647		$	109		$	21,379
Three months ended March 31, 2017
Balance at beginning of period	$	3,860		$	0	$	412		$	666		$	4,938
Total (losses) gains, unrealized or realized
Included in net earnings	(31		)	0		0			1			(30		)
Included in other comprehensive income	15			0		1			(22		)	(6		)
Purchases	0			0		4,259			2,000			6,259
Sales	(694		)	0		0			0			(694		)
Settlements	0			0		(88		)	(92		)	(180		)
Transfers in	329			0		0			0			329
Balance at end of period	$	3,479		$	0	$	4,584		$	2,553		$	10,616

Of the $21.4 million fair value of securities in Level 3 at March 31, 2018, which consisted of eleven securities, we priced six based on non-binding broker quotes, one was priced based on our unaffiliated money manager and foursecurities, which were included in Level 3 because they were not rated by a nationally recognized statistical rating organization, were priced by a nationally recognized pricing service.

During the three months ended March 31, 2018, eight securities were purchased and are new issues. One security, which was an exchange of a rated municipal bond for an unrated refunded bond, was transferred from Level 2 into Level 3. There were no transfers of securities between Levels 1 and 2. During the three months ended March 31, 2017, one security, which was an exchange of a rated municipal bond for an unrated refunded bond, was transferred from Level 2 into Level 3.

The gains or losses included in net earnings are included in the line item "Net realized gains on investments" in the Consolidated Statements of Earnings. We recognize the net gains or losses included in other comprehensive income in the line item "Unrealized (losses) gains on investments, net" in the Consolidated Statements of Comprehensive Income and the line item "Change in unrealized gain on investments" or the line item "Change in non-credit component of impairment losses on fixed maturities" in the Consolidated Statements of Changes in Shareholders’ Equity.

The following table presents the carrying value and estimated fair value of our financial instruments ($ in thousands):

	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	$	88,793	$	88,793	$	107,589	$	107,589
Available-for-sale securities:
Fixed maturities	1,497,930		1,497,930		1,441,107		1,441,107
Equity securities	90,498		90,498		96,004		96,004
Short-term investments	0		0		2,541		2,541
Total cash and investments	$	1,677,221	$	1,677,221	$	1,647,242	$	1,647,242
Liabilities:
Long-term debt	$	273,865	$	286,330	$	273,809	$	290,824

Refer to Note 4 – Investments to the Consolidated Financial Statements for additional information on investments and Note 5 – Long-Term Debt to the Consolidated Financial Statements for additional information on long-term debt.

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Investments

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

We consider all fixed maturity and equity securities to be available-for-sale and report them at fair value. Net unrealized gains or losses on equity securities prior to January 1, 2018, and on fixed maturities are reported after-tax (net of any valuation allowance) as a component of other comprehensive income. As of January 1, 2018, changes in fair value of equity securities are recognized through net income. The proceeds from sales of securities for the three months ended March 31, 2018, and March 31, 2017, were $335.6 million and $42.1 million, respectively. Sales of securities were higher during the first quarter of 2018 as a result of our transition to a new investment policy statement and related portfolio repositioning. The proceeds for the three months ended March 31, 2018, were net of $0.1 million of receivable for securities sold as of March 31, 2018. The proceeds for the three months ended March 31, 2017, were net of $5.2 million of receivable for securities sold during the first quarter of 2017 that had not settled as of March 31, 2017.

Gross gains of $2.9 million and gross losses of $1.6 million were realized on sales of available-for-sale securities during the three months ended March 31, 2018, compared with gross gains of $0.7 million and gross losses of $0.2 million realized on sales during the three months ended March 31, 2017. Gains or losses on securities are determined on a specific identification basis.

Summarized information for the major categories of our investment portfolio follows ($ in thousands):

March 31, 2018	Amortized Cost or Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		OTTI Recognized in Accumulated OCI(1)
Fixed maturities:
U.S. government	$	125,887	$	58	$	(1,188	)	$	124,757	$	0
State and municipal	297,994		1,031		(2,211		)	296,814		0
Mortgage-backed securities:
Residential	372,319		669		(7,981		)	365,007		(72		)
Commercial	63,053		23		(1,016		)	62,061		0
Total mortgage-backed securities	435,372		693		(8,996		)	427,068		(72		)
Asset-backed securities	129,010		104		(630		)	128,484		0
Corporates	524,676		1,726		(5,595		)	520,807		0
Total fixed maturities	1,512,939		3,612		(18,621		)	1,497,930		(72		)
Short-term investments	0		0		0			0		0
Total	$	1,512,939	$	3,612	$	(18,621	)	$	1,497,930	$	(72	)
December 31, 2017
Fixed maturities:
U.S. government	$	61,196	$	0	$	(668	)	$	60,528	$	0
State and municipal	492,442		2,768		(999		)	494,211		(46		)
Mortgage-backed securities:
Residential	353,277		1,812		(4,097		)	350,992		(1,479		)
Commercial	31,204		18		(653		)	30,569		0
Total mortgage-backed securities	384,481		1,830		(4,750		)	381,561		(1,479		)
Asset-backed securities	62,552		62		(196		)	62,418		(8		)
Corporates	439,208		4,610		(1,429		)	442,390		(31		)
Total fixed maturities	1,439,878		9,271		(8,042		)	1,441,107		(1,564		)
Equity securities	68,812		27,192		0			96,004		0
Short-term investments	2,541		0		0			2,541		0
Total	$	1,511,232	$	36,463	$	(8,042	)	$	1,539,653	$	(1,564	)
(1) The total non-credit portion of OTTI recognized in Accumulated OCI reflecting the original non-credit loss at the time the credit impairment was determined.

The following tables set forth the amount of unrealized loss by investment category and length of time that individual securities have been in a continuous unrealized loss position ($ in thousands):

	Less than 12 Months								12 Months or More
March 31, 2018	Number of Securities with Unrealized Losses	Fair Value		Gross Unrealized Losses			Unrealized Losses as % of Cost		Number of Securities with Unrealized Losses	Fair Value		Gross Unrealized Losses			Unrealized Losses as % of Cost
Fixed maturities:
U.S. government	28	$	48,202	$	(881	)	1.8	%	16	$	12,743	$	(307	)	2.4	%
State and municipal	99	184,046		(2,147		)	1.2	%	4	4,573		(64		)	1.4	%
Mortgage-backed securities:
Residential	263	144,098		(2,250		)	1.5	%	272	119,273		(5,730		)	4.6	%
Commercial	15	30,658		(177		)	0.6	%	8	23,206		(839		)	3.5	%
Total mortgage-backed securities	278	174,756		(2,427		)	1.4	%	280	142,480		(6,569		)	4.4	%
Asset-backed securities	43	74,670		(628		)	0.8	%	1	1,458		(2		)	0.1	%
Corporates	232	367,660		(5,168		)	1.4	%	15	18,126		(427		)	2.3	%
Total fixed maturities	680	849,333		(11,252		)	1.3	%	316	179,380		(7,369		)	3.9	%
Short-term investments	0	0		0			0.0	%	0	0		0			0.0	%
Total	680	$	849,333	$	(11,252	)	1.3	%	316	$	179,380	$	(7,369	)	3.9	%
December 31, 2017
Fixed maturities:
U.S. government	25	$	46,160	$	(422	)	0.9	%	16	$	14,368	$	(246	)	1.7	%
State and municipal	82	163,997		(939		)	0.6	%	5	10,529		(60		)	0.6	%
Mortgage-backed securities:
Residential	154	81,841		(453		)	0.6	%	279	127,317		(3,644		)	2.8	%
Commercial	2	3,578		(30		)	0.8	%	9	23,066		(623		)	2.6	%
Total mortgage-backed securities	156	85,419		(483		)	0.6	%	288	150,383		(4,267		)	2.8	%
Asset-backed securities	31	35,407		(193		)	0.5	%	2	1,561		(3		)	0.2	%
Corporates	104	158,788		(1,197		)	0.7	%	13	16,468		(232		)	1.4	%
Total fixed maturities	398	489,771		(3,233		)	0.7	%	324	193,309		(4,809		)	2.4	%
Equity securities	0	0		0			0.0	%	0	0		0			0.0	%
Short-term investments	0	0		0			0.0	%	0	0		0			0.0	%
Total	398	$	489,771	$	(3,233	)	0.7	%	324	$	193,309	$	(4,809	)	2.4	%

The determination of whether unrealized losses are “other-than-temporary” requires judgment based on subjective as well as objective factors. Factors we considered and resources we used in our determination include:

• whether the unrealized loss is credit-driven or a result of changes in market interest rates;

• the length of time the security’s market value has been below its cost;

• the extent to which fair value is less than cost basis;

• the intent to sell the security;

• whether it is more likely than not that there will be a requirement to sell the security before its anticipated recovery;

• historical operating, balance sheet and cash flow data contained in issuer SEC filings;

• issuer news releases;

• near-term prospects for improvement in the issuer and/or its industry;

• industry research and communications with industry specialists; and

• third-party research and credit rating reports.

We regularly evaluate for potential impairment each security position that has either of the following: a fair value of less than 95% of its book value or an unrealized loss that equals or exceeds $100,000.

The following table summarizes those securities with unrealized gains or losses (2018 includes fixed maturity securities only):

	March 31, 2018		December 31, 2017
Number of positions held with unrealized:
Gains	302		496
Losses	996		722
Number of positions held that individually exceed unrealized:
Gains of $500,000	0		2
Losses of $500,000	0		0
Percentage of positions held with unrealized:
Gains that were investment grade	84	%	81	%
Losses that were investment grade	94	%	97	%
Percentage of fair value held with unrealized:
Gains that were investment grade	88	%	81	%
Losses that were investment grade	93	%	95	%

The following table sets forth the amount of unrealized losses by age and severity at March 31, 2018, ($ in thousands):

Age of Unrealized Losses	Fair Value of Securities with Unrealized Losses		Total Gross Unrealized Losses			Less  Than 5%*			5% - 10%*			Total Gross Greater Than 10%*
Three months or less	$	454,565	$	(3,506	)	$	(3,394	)	$	(112	)	$	0
Four months through six months	247,851		(4,193		)	(4,007		)	(185		)	0
Seven months through nine months	139,484		(3,392		)	(3,392		)	0			0
Ten months through twelve months	7,432		(161		)	(161		)	0			0
Greater than twelve months	179,380		(7,369		)	(4,846		)	(2,523		)	0
Total	$	1,028,713	$	(18,621	)	$	(15,801	)	$	(2,820	)	$	0

* As a percentage of amortized cost or cost.

The change in unrealized gains (losses) on marketable securities recognized through accumulated other comprehensive income included the following ($ in thousands):

	Pre-tax
Three months ended March 31, 2018	Fixed Maturities			Short-Term Investments			Tax Effects			Net
Unrealized holding (losses) gains on securities arising during the period	$	(18,346	)	$	1		3,852			(14,492		)
Realized losses (gains) on securities sold	519			(1		)	(109		)	409
Impairment loss recognized in earnings	1,588			0			(334		)	1,255
Change in unrealized, net	$	(16,238	)	$	0		$	3,410		$	(12,828	)

	Pre-tax
Three months ended March 31, 2017	Fixed Maturities		Equity Securities			Short-Term Investments			Tax Effects			Net
Unrealized holding gains on securities arising during the period	$	4,368	$	6,294		$	3		$	(3,733	)	$	6,932
Realized losses (gains) on securities sold	52		(569		)	(1		)	182			(337		)
Impairment loss recognized in earnings	10		0			0			(3		)	6
Change in unrealized, net	$	4,429	$	5,725		$	1		$	(3,554	)	$	6,601

For fixed maturity securities that are other-than-temporarily impaired, we assess our intent to sell and the likelihood that we will be required to sell the security before recovery of our amortized cost. If a fixed maturity security is considered other-than-temporarily impaired but we do not intend to and are not more than likely to be required to sell the security before our recovery to amortized cost, the amount of the impairment is separated into a credit loss component and the amount due to all other factors ("non-credit component"). The excess of the amortized cost over the present value of the expected cash flows determines the credit loss component of an impairment charge on a fixed maturity security. The present value is determined using the best estimate of cash flows discounted at (i) the effective interest rate implicit at the date of acquisition for non-structured securities; or (ii) the book yield for structured securities. The techniques and assumptions for determining the best estimate of cash flows vary depending on the type of security. We recognize the credit loss component of an impairment charge in net earnings and the non-credit component in accumulated other comprehensive income. If we intend to sell or will, more likely than not, be required to sell a security, the entire amount of the impairment is treated as a credit loss.

For our securities held with unrealized losses, we believe, based on our analysis, that we will recover our cost basis in these securities and we do not intend to sell the securities nor is it more likely than not that there will be a requirement to sell the securities before they recover in value.

The following table is a progression of credit losses on fixed maturity securities that were bifurcated between a credit and non-credit component ($ in thousands):

	Three months ended March 31,
	2018			2017
Beginning balance	$	753		$	557
Additions for:
Previously impaired securities	278			0
Newly impaired securities	7			10
Reductions for:
Securities sold and paid down	(41		)	(24		)
Ending balance	$	996		$	542

The table below sets forth the scheduled maturities of fixed maturity securities at March 31, 2018, based on their fair values ($ in thousands). We report securities that do not have a single maturity date at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers.

	Fair Value								Amortized Cost
Maturity	Securities with Unrealized Gains		Securities with Unrealized Losses		Securities with No Unrealized Gains or Losses		All Fixed Maturity Securities		All Fixed Maturity Securities
One year or less	$	9,473	$	24,024	$	1,353	$	34,850	$	34,848
After one year through five years	188,968		453,537		7,187		649,692		653,913
After five years through ten years	68,219		157,207		649		226,075		228,286
After ten years	31,179		582		0		31,761		31,510
Mortgage- and asset-backed securities	143,210		393,363		18,979		555,552		564,382
Total	$	441,049	$	1,028,713	$	28,168	$	1,497,930	$	1,512,939

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Long-Term Debt

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Long-Term Debt

Long-Term Debt

($ in thousands)	March 31, 2018		December 31, 2017
Principal	$	275,000	$	275,000
Unamortized debt issuance costs	1,135		1,191
Long-term debt less unamortized debt issuance costs	$	273,865	$	273,809

In September 2012 we issued $275 million principal of senior notes due September 2022 (the “5.0% Senior Notes”). The 5.0% Senior Notes accrue interest at 5.0%, payable semiannually. At the time we issued the 5.0% Senior Notes, we capitalized $2.2 million of debt issuance costs, which we are amortizing over the term of the 5.0% Senior Notes. We calculated the March 31, 2018, fair value of $286.3 million using a 124 basis point spread to the 10-year U.S. Treasury Note of 2.741%.

In August 2017 we renewed our agreement for a $50 millionthree-year revolving credit facility (the “Credit Agreement”) that requires us to meet certain financial and other covenants. We are currently in compliance with all covenants under the Credit Agreement, and as of March 31, 2018, there were no borrowings outstanding against it.

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The following is a reconciliation of income taxes at the statutory rate of 21% and 35% for 2018 and 2017, respectively, to the effective provision for income taxes as shown in the Consolidated Statements of Earnings ($ in thousands):

	Three months ended
	March 31,
	2018			2017
Earnings before income taxes	$	24,937		$	14,868
Income taxes at statutory rate	5,237			5,204
Effect of:
Dividends-received deduction	(25		)	(79		)
Tax-exempt interest	(279		)	(633		)
Other	(80		)	(134		)
Provision for income taxes as shown on the Consolidated Statements of Earnings	$	4,853		$	4,358
GAAP effective tax rate	19.5		%	29.3		%

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Additional Information

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Additional Information

Additional Information

Supplemental Cash Flow Information

We made the following payments that we do not separately disclose in the Consolidated Statements of Cash Flows ($ in thousands):

	Three months ended
	March 31,
	2018		2017
Income tax payments	$	0	$	3,100
Interest payments on debt	6,875		6,875
Interest payments on capital leases	15		21

Negative Cash Book Balances

Negative cash book balances, included in the line item “Other liabilities” in the Consolidated Balance Sheets, were $49.2 million and $49.7 million at March 31, 2018, and December 31, 2017, respectively.

Merger with Kemper Corporation

On February 13, 2018, Kemper Corporation (“Kemper”), a wholly owned subsidiary of Kemper (“Kemper Merger Sub”) and Infinity entered into a merger agreement (the “Merger Agreement”) under which Kemper will acquire Infinity in a cash and stock transaction valued at approximately $1.4 billion, plus assumption of certain of Infinity’s debt, or $129.00 per Infinity share; the exchange ratio for stock consideration to be issued in the merger is fixed and was determined based on Kemper’s 20-trading day volume weighted average price as of February 12, 2018 of $64.40. Based on Kemper’s February 12, 2018 closing stock price of $57.75, the implied total consideration is approximately $1.3 billion, or $121.01 per Infinity share. Pursuant to the Merger Agreement, Kemper Merger Sub will merge with and into Infinity, with Infinity surviving as a wholly owned subsidiary of Kemper. Kemper is a diversified insurance holding company, with subsidiaries that provide automobile, homeowners, life, health, and other insurance products to individuals and businesses. Kemper conducts its operations through two operating segments: Property & Casualty Insurance and Life & Health Insurance. Kemper conducts its operations solely in the United States with approximately 5,550 full-time associates supporting their operations.

Under the terms of the Merger Agreement, as of the effective time of the merger (the “Effective Time”), each share of Infinity common stock issued and outstanding as of immediately prior to the Effective Time (other than as set forth in the Merger Agreement) will be canceled and converted into, at the election of the holder of such share and subject to an automatic adjustment as described below, the right to, receive (i) $51.60 in cash and 1.2019 Kemper common shares for each share of Infinity common stock, without interest (the “Mixed Consideration”), (ii) an amount of cash for each share of Infinity common stock, without interest, equal to $129.00 (the “Cash Consideration”) or (iii) a number of shares of Kemper common stock equal to 2.0031 (the “Stock Consideration”). Holders of Infinity common stock who do not make an election will receive the Mixed Consideration. The consideration to be paid to holders of Infinity common stock electing to receive the Cash Consideration or the Stock Consideration in connection with the merger is subject to automatic adjustment, as applicable, to ensure that the total amount of cash paid and the total number of shares of Kemper common stock issued in the merger is the same as what would be paid and issued if all holders of Infinity common stock were to receive the Mixed Consideration. Following the close of the merger, Infinity shareholders are expected to own approximately 20% of the combined company on a pro-forma basis.

The merger has been approved by the Board of Directors of each company and is expected to close in the third quarter of 2018, subject to the satisfaction or waiver of applicable closing conditions. During the first quarter of 2018, Kemper and Infinity received notice from the U.S. Federal Trade Commission granting early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, thereby satisfying one of the applicable closing conditions. Remaining closing conditions to which the completion of the merger is subject include, among others, (i) adoption by Infinity shareholders of the Merger Agreement, (ii) approval by Kemper stockholders of the issuance of Kemper common stock in connection with the merger, (iii) the receipt of certain other regulatory approvals, (iv) the absence of any effective order issued by any court of competent jurisdiction or other legal restraint prohibiting or preventing the consummation of the merger and (v) other closing conditions.

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Insurance Reserves

3 Months Ended

Mar. 31, 2018

Insurance [Abstract]

Insurance Reserves

Insurance Reserves

Insurance reserves include liabilities for unpaid losses, both known and estimated for incurred but not reported (IBNR), and unpaid loss adjustment expenses (LAE). The following table provides an analysis of changes in the liability for unpaid losses and LAE on a GAAP basis ($ in thousands):

	Three months ended
	March 31,
	2018			2017
Balance at Beginning of Period
Unpaid losses on known claims	$	264,470		$	238,412
IBNR losses	312,516			306,641
LAE	138,112			140,402
Total unpaid losses and LAE	715,098			685,455
Reinsurance recoverables	(31,609		)	(17,130		)
Unpaid losses and LAE, net of reinsurance recoverables	683,489			668,325
Current Activity
Loss and LAE incurred:
Current accident year	273,408			277,044
Prior accident years	(8,856		)	(6,368		)
Total loss and LAE incurred	264,552			270,676
Loss and LAE payments:
Current accident year	(89,106		)	(96,869		)
Prior accident years	(177,479		)	(179,319		)
Total loss and LAE payments	(266,585		)	(276,187		)
Balance at End of Period
Unpaid losses and LAE, net of reinsurance recoverables	681,457			662,814
Add back reinsurance recoverables	19,549			16,133
Total unpaid losses and LAE	701,006			678,947
Unpaid losses on known claims	247,940			233,303
IBNR losses	318,281			307,932
LAE	134,786			137,712
Total unpaid losses and LAE	$	701,006		$	678,947

The $8.9 million of favorable reserve development during the three months ended March 31, 2018, was primarily due to decreases in accident year 2017 estimates from California, with lower ultimate frequency estimates in collision and comprehensive coverages along with lower ultimate severity estimates for collision coverage, and from Florida, with decreased ultimate frequency estimates in collision, comprehensive and personal injury protection coverages.

The $6.4 million of favorable reserve development during the three months ended March 31, 2017, was primarily due to decreases in frequency estimates in California and Florida material damage coverages related to accident year 2016, partially offset by increases in severity estimates in personal injury protection coverages and in bodily injury coverages in our commercial auto product related to accident years 2016 and prior.

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Commitments And Contingencies

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments

There have been no material changes from the commitments discussed on Form 10-K for the year ended December 31, 2017. For a description of our previously reported commitments, refer to Note 14 Commitments and Contingencies of our Form 10-K for the year ended December 31, 2017.

Contingencies

From time to time, we and our subsidiaries are named as defendants in various lawsuits incidental to our insurance operations. We consider legal actions relating to claims made in the ordinary course of seeking indemnification for a loss covered by the insurance policy in establishing loss and LAE reserves.

We also face in the ordinary course of business lawsuits that seek damages beyond policy limits, commonly known as extra-contractual claims, as well as class action and individual lawsuits that involve issues not unlike those facing other insurance companies and employers.

We continually evaluate potential liabilities and reserves for litigation of these types using the criteria established by the Contingencies topic of the FASB Accounting Standards Codification. Under this guidance, we may only record reserves for a loss if the likelihood of occurrence is probable and we can reasonably estimate the amount or range of the loss. When disclosing litigation or claims where a material loss is judged to be reasonably possible, we will disclose an estimated range of loss or state that an estimate cannot be made. We consider each legal action using this guidance and record reserves for losses as warranted by establishing a reserve captured within our Consolidated Balance Sheets line-items “Unpaid losses and loss adjustment expenses” for extra-contractual claims and “Other liabilities” for class action and other non-claims related lawsuits. We record amounts incurred on the Consolidated Statements of Earnings within “Losses and loss adjustment expenses” for extra-contractual claims and “Other expenses” for class action and other non-claims related lawsuits.

Certain claims and regulatory or legal actions have been threatened or brought against us for which we have accrued no loss, and for which an estimate of a possible range of loss cannot be made under the above rules. While it is not possible to predict the ultimate outcome of these lawsuits, we do not believe they are likely to have a material effect on our financial condition or liquidity. However, losses incurred because of these cases could have a material adverse impact on net earnings in a given period.

As of March 31, 2018, pending putative (i.e., not certified) class action lawsuits that challenge certain of Infinity’s business operations and practices included the following:

• allegations we sold a lessor liability endorsement affording only illusory coverage.

• a challenge to denial of personal injury protection benefits to a class of injured third parties in vehicle accidents.

• a challenge to our payment of a percentage of arbitration awards to collection agencies in successful intercompany

arbitrations.

• allegations that we are obligated to reimburse Medicare or secondary payers for accident-related medical payments in

which personal injury protection benefits were denied.

In addition to lawsuits, regulatory bodies, including state insurance departments and the Securities and Exchange Commission, among others, may make inquiries, investigate consumer complaints or conduct on-site examinations concerning specific business practices or compliance more generally. Such inquiries, investigations or examinations have in the past and may in the future directly or indirectly result in regulatory orders requiring remedial, injunctive or other actions or the assessment of substantial fines or other penalties.

For a description of previously reported contingencies, refer to Note 14 Commitments and Contingencies of our Form 10-K for the year ended December 31, 2017.

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Accumulated Other Comprehensive Income

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income

The components of other comprehensive income before and after tax are as follows ($ in thousands):

	Three months ended March 31,
	2018									2017
	Before Tax			Income Tax			Net			Before Tax			Income Tax			Net
Accumulated change in post-retirement benefit liability, beginning of period	$	829		$	(290	)	$	539		$	1,033		$	(361	)	$	671
Cumulative effect of change in accounting principle	0			116			116			0			0			0
Effect on other comprehensive income	(2		)	0			(1		)	(13		)	4			(8		)
Accumulated change in post-retirement benefit liability, end of period	827			(174		)	653			1,020			(357		)	663
Accumulated unrealized gains on investments, net, beginning of period	28,421			(9,204		)	19,217			11,133			(3,896		)	7,236
Cumulative effect of change in accounting principle	(27,192		)	8,948			(18,244		)	0			0			0
Other comprehensive (loss) income before reclassification (1)	(18,344		)	3,852			(14,492		)	10,664			(3,733		)	6,932
Reclassification adjustment for other-than-temporary impairments included in net income (1)	1,588			(334		)	1,255			10			(3		)	6
Reclassification adjustment for realized losses (gains) included in net income (1)	518			(109		)	409			(519		)	182			(337		)
Effect on other comprehensive income	(16,238		)	3,410			(12,828		)	10,155			(3,554		)	6,601
Accumulated unrealized (losses) gains on investments, net, end of period	(15,009		)	3,154			(11,855		)	21,288			(7,451		)	13,837
Accumulated other comprehensive income, beginning of period	29,250			(9,494		)	19,756			12,165			(4,258		)	7,907
Cumulative effect of change in accounting principle	(27,192		)	9,064			(18,128		)	0			0			0
Change in post-retirement benefit liability	(2		)	0			(1		)	(13		)	4			(8		)
Change in unrealized (losses) gains on investments, net (1)	(16,238		)	3,410			(12,828		)	10,155			(3,554		)	6,601
Effect on other comprehensive income	(43,432		)	12,474			(30,958		)	10,143			(3,550		)	6,593
Accumulated other comprehensive (loss) income, end of period	$	(14,182	)	$	2,980		$	(11,202	)	$	22,308		$	(7,808	)	$	14,500

(1) The amounts for 2018 are for fixed maturities only.

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Segment Information

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Information

Segment Information

We manage our business based on product line and have three operating segments: Personal Auto, Commercial Auto and Classic Collector (our reportable segments are Personal Auto and Commercial Auto).

Our Personal Auto product provides coverage to individuals for liability to others for bodily injury and property damage and for physical damage to an insured's own vehicle from collision and various other perils. In addition, some states require policies to provide for first party personal injury protection, frequently referred to as no-fault coverage.

Our Commercial Auto product provides coverage to businesses for liability to others for bodily injury and property damage and for physical damage to vehicles from collision and various other perils. We primarily target businesses with fleets of 10 or fewer vehicles and average 1.9 vehicles per policy. We avoid businesses that are involved in what we consider to be hazardous operations or interstate commerce.

Our Classic Collector product provides coverage to individuals with classic or antique automobiles for liability to others for bodily injury and property damage and for physical damage to an insured's own vehicle from collision and various other perils.

All segment revenues are generated from external customers. The following table provides revenues by segment and a reconciliation to "Total revenues" as reported on the Consolidated Statements of Earnings ($ in thousands):

	Three months ended
	March 31,
Gross written premium:	2018			2017
Personal Auto	$	370,193		$	324,352
Commercial Auto	47,739			42,785
Classic Collector	3,660			3,565
Total gross written premium	421,592			370,702
Ceded reinsurance:
Personal Auto	(2,077		)	(983		)
Commercial Auto	(1,379		)	(1,412		)
Classic Collector	(260		)	(213		)
Total ceded reinsurance	(3,716		)	(2,608		)
Net written premium:
Personal Auto	368,116			323,369
Commercial Auto	46,360			41,373
Classic Collector	3,400			3,352
Total net written premium	417,876			368,094
Change in unearned premium:
Personal Auto	(57,817		)	(20,983		)
Commercial Auto	(6,532		)	(6,170		)
Classic Collector	460			428
Total change in unearned premium	(63,889		)	(26,726		)
Earned premium:
Personal Auto	310,298			302,386
Commercial Auto	39,828			35,203
Classic Collector	3,860			3,780
Total earned premium	353,987			341,368
Installment and other fee income:
Personal Auto	24,281			23,937
Commercial Auto	3,114			2,802
Classic Collector	0			0
Total installment and other fee income	27,395			26,739
Net investment income	9,786			8,695
Net realized gains on investments	(2,832		)	509
Other income	430			275
Total revenues	$	388,766		$	377,587

Our management uses underwriting income and combined ratios calculated on a statutory accident year basis as primary measures of profitability. Statutory accident year underwriting income is calculated by subtracting losses and loss adjustment expenses and commissions and other underwriting expenses (including bad debt charge-offs on agents' balances and premium receivables) from the total of earned premium and installment and other fee income. The statutory accident year combined ratio represents the sum of the following ratios: (i) losses and LAE incurred, excluding development from prior accident years, as a percentage of net earned premium; and (ii) underwriting expenses incurred, including bad debt and net of fees, as a percentage of net written premium.

The primary differences between the calculation of the statutory accident year used by management and the statutory calendar year combined ratios is the exclusion of bad debt charge-offs and the inclusion of development on prior accident year loss and LAE reserves.

Certain expenses are treated differently under statutory accounting principles. Under GAAP, commissions, premium taxes and other variable costs incurred in connection with successfully writing new and renewal business are capitalized as deferred policy acquisition costs and amortized on a pro rata basis over the period in which the related premium is earned. On a statutory basis, these items are expensed as incurred. Additionally, bad debt charge-offs on agents' balances and premium receivables are included in the GAAP combined ratios.

The following tables present the underwriting income and combined ratio on a statutory accident year basis with reconciliations to "Earnings before income taxes" as presented on the Consolidated Statements of Earnings ($ in thousands). We do not allocate assets or "Provision for income taxes" to operating segments.

	Three months ended March 31, 2018
	Personal Auto				Commercial Auto					Classic Collector					Total
	Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)
Statutory accident year underwriting income	$	6,311	94.8	%	$	812		95.2	%	$	613		88.1	%	$	7,737		94.7	%
Bad debt charge-offs	3,363				392					(44		)			3,711
Favorable (unfavorable) development on prior accident years	10,555				(1,362		)			(337		)			8,856
Statutory calendar year underwriting income	20,229		90.5	%	(158		)	97.8	%	233			98.2	%	20,304			91.3	%
Statutory-to-GAAP underwriting income differences															6,005
GAAP calendar year underwriting income															26,309			92.6	%
Net investment income															9,786
Net realized gains on investments															(2,832		)
Other income															430
Interest expense															(3,509		)
Corporate general and administrative expenses															(4,743		)
Other expenses															(505		)
Earnings before income taxes															$	24,937
(1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

	Three months ended March 31, 2017
	Personal Auto				Commercial Auto					Classic Collector				Total
	Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)
Statutory accident year underwriting income	$	1,594	98.3	%	$	629		95.3	%	$	335	95.3	%	$	2,558		98.0	%
Bad debt charge-offs	2,251				291					10				2,552
Favorable (unfavorable) development on prior accident years	6,986				(874		)			256				6,368
Statutory calendar year underwriting income	10,831		95.2	%	45			97.1	%	602		88.3	%	11,478			95.4	%
Statutory-to-GAAP underwriting income differences														14
GAAP calendar year underwriting income														11,492			96.6	%
Net investment income														8,695
Net realized gains on investments														509
Other income														275
Interest expense														(3,512		)
Corporate general and administrative expenses														(2,271		)
Other expenses														(322		)
Earnings before income taxes														$	14,868
(1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

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Significant Reporting And Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Basis of Consolidation and Reporting

Basis of Consolidation and Reporting

The accompanying consolidated financial statements are unaudited and should be read in conjunction with our Annual Report on Form 10-K (Form 10-K) for the year ended December 31, 2017. This Quarterly Report on Form 10-Q, including the Condensed Notes to Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations, focuses on our financial performance since the beginning of the year.

These financial statements reflect certain adjustments necessary for a fair presentation of our results of operations and financial position. Such adjustments consist of normal, recurring accruals recorded to accurately match expenses with their related revenue streams and the elimination of all significant intercompany transactions and balances.

We have evaluated events that occurred after March 31, 2018, for recognition or disclosure in our financial statements and the notes to the financial statements.

Schedules may not foot due to rounding.

Estimates

Estimates

We based certain accounts and balances within these financial statements upon our estimates and assumptions. The amount of reserves for claims not yet paid, for example, is an item that we can only record by estimation. Unrealized capital gains and losses on investments are subject to market fluctuations, and we use judgment in the determination of whether unrealized losses on certain securities are temporary or other-than-temporary. Should actual results differ significantly from these estimates, the effect on our results of operations could be material. The results of operations for the periods presented may not be indicative of our results for the entire year.

Recently Adopted and Issued Accounting Standards

Recently Adopted Accounting Standards

In February 2018 the FASB issued an ASU allowing a reclassification from accumulated other comprehensive income to retained earnings and consequently eliminating the stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017. We elected to early adopt the ASU and applied the amendment in the period of adoption, with a cumulative-effect adjustment of $0.4 million reclassified from accumulated other comprehensive income to retained earnings.

In October 2016 the FASB issued an ASU related to the recognition of income tax on intra-entity transfers of assets other than inventory. The guidance requires the income tax to be recognized when the transfer occurs rather than when the asset is sold to an outside party. We adopted the change on a modified retrospective basis, with a cumulative-effect adjustment of less than $(0.1) million recorded to retained earnings as of January 1, 2018.

In January 2016 the FASB issued an ASU amending the guidance on classifying and measuring financial instruments. The guidance requires equity securities to be measured at fair value and changes in that fair value to be recognized through net income. We adopted the change on a modified retrospective basis as of January 1, 2018, with a cumulative-effect adjustment of $17.7 million reclassified from other comprehensive income to retained earnings.

In May 2014 the FASB issued an ASU related to the accounting for revenue from contracts with customers. Insurance contracts were excluded from the scope of the guidance. As an insurance-entity, we are largely exempt from the provisions of this standard, with only fee income subject to this new standard. Processing and policy fees were generally earned at the inception of the policy under previous guidance but are earned over the life of the policy under current guidance. The guidance was adopted as of January 1, 2018, using a full retrospective approach with a cumulative-effect adjustment to the balance sheet, which reduced shareholders' equity by $4.5 million.

The following table illustrates the effect of adopting this standard on the Consolidated Balance Sheets ($ in millions):

	December 31, 2017
	As Reported		As Adjusted		Difference
Agents' balances and premium receivable	$	508.1	$	508.0	$	(0.1	)
Current and deferred income taxes	9.4		10.5		1.2
Total assets	2,473.4		2,474.5		1.1
Other liabilities	114.3		119.8		5.5
Shareholders' equity	720.3		715.8		(4.5		)
Total liabilities and shareholders' equity	2,473.4		2,474.5		1.1

The following table illustrates the effect of adopting this standard on the Consolidated Statements of Earnings (in millions, except per share amounts):        

	Three months ended March 31, 2017
	As Reported		As Adjusted		Difference
Installment and other fee income	$	26.9	$	26.7	$	(0.2	)
Total revenues	377.8		377.6		(0.2		)
Earnings before income taxes	15.1		14.9		(0.2		)
Provision for income taxes	4.4		4.4		(0.1		)
Net earnings	10.6		10.5		(0.1		)
Net earnings per common share:
Basic	$	0.97	$	0.96	$	(0.01	)
Diluted	0.96		0.94		(0.02		)

We also adjusted the Consolidated Statements of Changes in Shareholders' Equity and the Consolidated Statements of Cash Flows for these changes for the three months ended March 31, 2017.

Recently Issued Accounting Standards

In March 2017 the FASB issued an ASU related to the amortization of premium on purchased callable debt securities. The guidance amends the amortization period for certain purchased callable debt securities held at a premium. Securities that contain explicit, noncontingent call features that are callable at fixed prices and on preset dates should shorten the amortization period for the premium to the earliest call date (and if the call option is not exercised, the effective yield is reset using the payment terms of the debt security). The standard is effective for fiscal years, and interim period within those years, beginning after December 15, 2018, and is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

In June 2016 the FASB issued an ASU related to the accounting for credit losses. The guidance generally requires credit losses on available-for-sale debt securities to be recognized as an allowance rather than as a reduction to the amortized cost of a security. The standard is effective for fiscal periods beginning after December 15, 2019, and interim periods within the year of adoption, with prospective application of the ASU required for debt securities for which an other-than-temporary impairment has been recognized before the implementation date. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

In February 2016 the FASB issued an ASU related to the accounting for leases. The guidance requires lessees to recognize lease assets and liabilities on the balance sheet. The standard is effective for fiscal years beginning after December 15, 2018, and is to be applied retrospectively, with an option to use a modified retrospective approach for leases which commenced prior to the effective date of this ASU. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations.

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Significant Reporting And Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The following table illustrates the effect of adopting this standard on the Consolidated Balance Sheets ($ in millions):

	December 31, 2017
	As Reported		As Adjusted		Difference
Agents' balances and premium receivable	$	508.1	$	508.0	$	(0.1	)
Current and deferred income taxes	9.4		10.5		1.2
Total assets	2,473.4		2,474.5		1.1
Other liabilities	114.3		119.8		5.5
Shareholders' equity	720.3		715.8		(4.5		)
Total liabilities and shareholders' equity	2,473.4		2,474.5		1.1

The following table illustrates the effect of adopting this standard on the Consolidated Statements of Earnings (in millions, except per share amounts):        

	Three months ended March 31, 2017
	As Reported		As Adjusted		Difference
Installment and other fee income	$	26.9	$	26.7	$	(0.2	)
Total revenues	377.8		377.6		(0.2		)
Earnings before income taxes	15.1		14.9		(0.2		)
Provision for income taxes	4.4		4.4		(0.1		)
Net earnings	10.6		10.5		(0.1		)
Net earnings per common share:
Basic	$	0.97	$	0.96	$	(0.01	)
Diluted	0.96		0.94		(0.02		)

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Computation of Net Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Earnings Per Common Share

The following table illustrates our computations of basic and diluted net earnings per common share ($ in thousands, except per

share figures):

	Three months ended
	March 31,
	2018		2017
Net earnings	$	20,083	$	10,510
Average basic shares outstanding	10,915		10,998
Basic net earnings per share	$	1.84	$	0.96
Average basic shares outstanding	10,915		10,998
Restricted stock not vested	8		33
Dilutive effect of Performance Share Plan	86		96
Average diluted shares outstanding	11,009		11,127
Diluted net earnings per share	$	1.82	$	0.94

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Fair Value (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair value by hierarchy

The following tables present, for each of the fair value hierarchy levels, our assets and liabilities for which we report fair value on a recurring basis ($ in thousands):

	Fair Value
March 31, 2018	Level 1			Level 2			Level 3			Total
Cash and cash equivalents	$	88,793		$	0		$	0		$	88,793
Fixed maturity securities:
U.S. government	124,757			0			0			124,757
State and municipal	0			296,048			766			296,814
Mortgage-backed securities:
Residential	0			365,007			0			365,007
Commercial	0			59,204			2,857			62,061
Total mortgage-backed securities	0			424,211			2,857			427,068
Asset-backed securities	0			110,836			17,647			128,484
Corporates	0			520,698			109			520,807
Total fixed maturities	124,757			1,351,794			21,379			1,497,930
Equity securities	90,498			0			0			90,498
Short-term investments	0			0			0			0
Total cash and investments	$	304,048		$	1,351,794		$	21,379		$	1,677,221
Percentage of total cash and investments	18.1		%	80.6		%	1.3		%	100.0		%
December 31, 2017
Cash and cash equivalents	$	107,589		$	0		$	0		$	107,589
Fixed maturity securities:
U.S. government	60,528			0			0			60,528
State and municipal	0			490,724			3,488			494,211
Mortgage-backed securities:
Residential	0			350,992			0			350,992
Commercial	0			30,569			0			30,569
Total mortgage-backed securities	0			381,561			0			381,561
Asset-backed securities	0			62,266			152			62,418
Corporates	0			442,281			108			442,390
Total fixed maturities	60,528			1,376,832			3,748			1,441,107
Equity securities	96,004			0			0			96,004
Short-term investments	0			2,541			0			2,541
Total cash and investments	$	264,121		$	1,379,373		$	3,748		$	1,647,242
Percentage of total cash and investments	16.0		%	83.7		%	0.2		%	100.0		%

Fair value level 3 reconciliation

The following tables present the progression in the Level 3 fair value category ($ in thousands):

Three months ended March 31, 2018	State and Municipal			Mortgage- Backed Securities		Asset-Backed Securities			Corporates			Total
Balance at beginning of period	$	3,488		$	0	$	152		$	108		$	3,748
Total (losses) gains, unrealized or realized
Included in net earnings	(10		)	0		(0		)	(0		)	(10		)
Included in other comprehensive income	3			10		27			1			41
Purchases	0			2,847		17,729			0			20,576
Sales	(3,360		)	0		0			0			(3,360		)
Settlements	0			0		(261		)	0			(261		)
Transfers in	645			0		0			0			645
Balance at end of period	$	766		$	2,857	$	17,647		$	109		$	21,379
Three months ended March 31, 2017
Balance at beginning of period	$	3,860		$	0	$	412		$	666		$	4,938
Total (losses) gains, unrealized or realized
Included in net earnings	(31		)	0		0			1			(30		)
Included in other comprehensive income	15			0		1			(22		)	(6		)
Purchases	0			0		4,259			2,000			6,259
Sales	(694		)	0		0			0			(694		)
Settlements	0			0		(88		)	(92		)	(180		)
Transfers in	329			0		0			0			329
Balance at end of period	$	3,479		$	0	$	4,584		$	2,553		$	10,616

Carrying Value and Estimated Fair Value

The following table presents the carrying value and estimated fair value of our financial instruments ($ in thousands):

	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	$	88,793	$	88,793	$	107,589	$	107,589
Available-for-sale securities:
Fixed maturities	1,497,930		1,497,930		1,441,107		1,441,107
Equity securities	90,498		90,498		96,004		96,004
Short-term investments	0		0		2,541		2,541
Total cash and investments	$	1,677,221	$	1,677,221	$	1,647,242	$	1,647,242
Liabilities:
Long-term debt	$	273,865	$	286,330	$	273,809	$	290,824

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Investments (Tables)

3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Summary of information of investment portfolio

Summarized information for the major categories of our investment portfolio follows ($ in thousands):

March 31, 2018	Amortized Cost or Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		OTTI Recognized in Accumulated OCI(1)
Fixed maturities:
U.S. government	$	125,887	$	58	$	(1,188	)	$	124,757	$	0
State and municipal	297,994		1,031		(2,211		)	296,814		0
Mortgage-backed securities:
Residential	372,319		669		(7,981		)	365,007		(72		)
Commercial	63,053		23		(1,016		)	62,061		0
Total mortgage-backed securities	435,372		693		(8,996		)	427,068		(72		)
Asset-backed securities	129,010		104		(630		)	128,484		0
Corporates	524,676		1,726		(5,595		)	520,807		0
Total fixed maturities	1,512,939		3,612		(18,621		)	1,497,930		(72		)
Short-term investments	0		0		0			0		0
Total	$	1,512,939	$	3,612	$	(18,621	)	$	1,497,930	$	(72	)
December 31, 2017
Fixed maturities:
U.S. government	$	61,196	$	0	$	(668	)	$	60,528	$	0
State and municipal	492,442		2,768		(999		)	494,211		(46		)
Mortgage-backed securities:
Residential	353,277		1,812		(4,097		)	350,992		(1,479		)
Commercial	31,204		18		(653		)	30,569		0
Total mortgage-backed securities	384,481		1,830		(4,750		)	381,561		(1,479		)
Asset-backed securities	62,552		62		(196		)	62,418		(8		)
Corporates	439,208		4,610		(1,429		)	442,390		(31		)
Total fixed maturities	1,439,878		9,271		(8,042		)	1,441,107		(1,564		)
Equity securities	68,812		27,192		0			96,004		0
Short-term investments	2,541		0		0			2,541		0
Total	$	1,511,232	$	36,463	$	(8,042	)	$	1,539,653	$	(1,564	)
(1) The total non-credit portion of OTTI recognized in Accumulated OCI reflecting the original non-credit loss at the time the credit impairment was determined.

The portion of unrealized gains and losses recorded during the three months ended March 31, 2018, that relate to equities still held at the end of the reporting date are as follows ($ in thousands):

Net losses recognized during the period on equity securities	$	(726	)
Less: Net gains recognized during the period on equity securities sold	(1,881		)
Unrealized losses recognized during the period on equity securities still held at the reporting date	$	(2,607	)

Unrealized loss by investment category and length of time

The following tables set forth the amount of unrealized loss by investment category and length of time that individual securities have been in a continuous unrealized loss position ($ in thousands):

	Less than 12 Months								12 Months or More
March 31, 2018	Number of Securities with Unrealized Losses	Fair Value		Gross Unrealized Losses			Unrealized Losses as % of Cost		Number of Securities with Unrealized Losses	Fair Value		Gross Unrealized Losses			Unrealized Losses as % of Cost
Fixed maturities:
U.S. government	28	$	48,202	$	(881	)	1.8	%	16	$	12,743	$	(307	)	2.4	%
State and municipal	99	184,046		(2,147		)	1.2	%	4	4,573		(64		)	1.4	%
Mortgage-backed securities:
Residential	263	144,098		(2,250		)	1.5	%	272	119,273		(5,730		)	4.6	%
Commercial	15	30,658		(177		)	0.6	%	8	23,206		(839		)	3.5	%
Total mortgage-backed securities	278	174,756		(2,427		)	1.4	%	280	142,480		(6,569		)	4.4	%
Asset-backed securities	43	74,670		(628		)	0.8	%	1	1,458		(2		)	0.1	%
Corporates	232	367,660		(5,168		)	1.4	%	15	18,126		(427		)	2.3	%
Total fixed maturities	680	849,333		(11,252		)	1.3	%	316	179,380		(7,369		)	3.9	%
Short-term investments	0	0		0			0.0	%	0	0		0			0.0	%
Total	680	$	849,333	$	(11,252	)	1.3	%	316	$	179,380	$	(7,369	)	3.9	%
December 31, 2017
Fixed maturities:
U.S. government	25	$	46,160	$	(422	)	0.9	%	16	$	14,368	$	(246	)	1.7	%
State and municipal	82	163,997		(939		)	0.6	%	5	10,529		(60		)	0.6	%
Mortgage-backed securities:
Residential	154	81,841		(453		)	0.6	%	279	127,317		(3,644		)	2.8	%
Commercial	2	3,578		(30		)	0.8	%	9	23,066		(623		)	2.6	%
Total mortgage-backed securities	156	85,419		(483		)	0.6	%	288	150,383		(4,267		)	2.8	%
Asset-backed securities	31	35,407		(193		)	0.5	%	2	1,561		(3		)	0.2	%
Corporates	104	158,788		(1,197		)	0.7	%	13	16,468		(232		)	1.4	%
Total fixed maturities	398	489,771		(3,233		)	0.7	%	324	193,309		(4,809		)	2.4	%
Equity securities	0	0		0			0.0	%	0	0		0			0.0	%
Short-term investments	0	0		0			0.0	%	0	0		0			0.0	%
Total	398	$	489,771	$	(3,233	)	0.7	%	324	$	193,309	$	(4,809	)	2.4	%

Summary of unrealized gains or losses

The following table summarizes those securities with unrealized gains or losses (2018 includes fixed maturity securities only):

	March 31, 2018		December 31, 2017
Number of positions held with unrealized:
Gains	302		496
Losses	996		722
Number of positions held that individually exceed unrealized:
Gains of $500,000	0		2
Losses of $500,000	0		0
Percentage of positions held with unrealized:
Gains that were investment grade	84	%	81	%
Losses that were investment grade	94	%	97	%
Percentage of fair value held with unrealized:
Gains that were investment grade	88	%	81	%
Losses that were investment grade	93	%	95	%

Unrealized loss by age and severity

The following table sets forth the amount of unrealized losses by age and severity at March 31, 2018, ($ in thousands):

Age of Unrealized Losses	Fair Value of Securities with Unrealized Losses		Total Gross Unrealized Losses			Less  Than 5%*			5% - 10%*			Total Gross Greater Than 10%*
Three months or less	$	454,565	$	(3,506	)	$	(3,394	)	$	(112	)	$	0
Four months through six months	247,851		(4,193		)	(4,007		)	(185		)	0
Seven months through nine months	139,484		(3,392		)	(3,392		)	0			0
Ten months through twelve months	7,432		(161		)	(161		)	0			0
Greater than twelve months	179,380		(7,369		)	(4,846		)	(2,523		)	0
Total	$	1,028,713	$	(18,621	)	$	(15,801	)	$	(2,820	)	$	0

* As a percentage of amortized cost or cost.

Change in unrealized gains (losses) on marketable securities

The change in unrealized gains (losses) on marketable securities recognized through accumulated other comprehensive income included the following ($ in thousands):

	Pre-tax
Three months ended March 31, 2018	Fixed Maturities			Short-Term Investments			Tax Effects			Net
Unrealized holding (losses) gains on securities arising during the period	$	(18,346	)	$	1		3,852			(14,492		)
Realized losses (gains) on securities sold	519			(1		)	(109		)	409
Impairment loss recognized in earnings	1,588			0			(334		)	1,255
Change in unrealized, net	$	(16,238	)	$	0		$	3,410		$	(12,828	)

	Pre-tax
Three months ended March 31, 2017	Fixed Maturities		Equity Securities			Short-Term Investments			Tax Effects			Net
Unrealized holding gains on securities arising during the period	$	4,368	$	6,294		$	3		$	(3,733	)	$	6,932
Realized losses (gains) on securities sold	52		(569		)	(1		)	182			(337		)
Impairment loss recognized in earnings	10		0			0			(3		)	6
Change in unrealized, net	$	4,429	$	5,725		$	1		$	(3,554	)	$	6,601

Progression of credit losses on fixed maturity securities

The following table is a progression of credit losses on fixed maturity securities that were bifurcated between a credit and non-credit component ($ in thousands):

	Three months ended March 31,
	2018			2017
Beginning balance	$	753		$	557
Additions for:
Previously impaired securities	278			0
Newly impaired securities	7			10
Reductions for:
Securities sold and paid down	(41		)	(24		)
Ending balance	$	996		$	542

Scheduled maturities of fixed maturity securities

The table below sets forth the scheduled maturities of fixed maturity securities at March 31, 2018, based on their fair values ($ in thousands). We report securities that do not have a single maturity date at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers.

	Fair Value								Amortized Cost
Maturity	Securities with Unrealized Gains		Securities with Unrealized Losses		Securities with No Unrealized Gains or Losses		All Fixed Maturity Securities		All Fixed Maturity Securities
One year or less	$	9,473	$	24,024	$	1,353	$	34,850	$	34,848
After one year through five years	188,968		453,537		7,187		649,692		653,913
After five years through ten years	68,219		157,207		649		226,075		228,286
After ten years	31,179		582		0		31,761		31,510
Mortgage- and asset-backed securities	143,210		393,363		18,979		555,552		564,382
Total	$	441,049	$	1,028,713	$	28,168	$	1,497,930	$	1,512,939

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Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of long-term debt

($ in thousands)	March 31, 2018		December 31, 2017
Principal	$	275,000	$	275,000
Unamortized debt issuance costs	1,135		1,191
Long-term debt less unamortized debt issuance costs	$	273,865	$	273,809

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Reconciliation of provision for income taxes

The following is a reconciliation of income taxes at the statutory rate of 21% and 35% for 2018 and 2017, respectively, to the effective provision for income taxes as shown in the Consolidated Statements of Earnings ($ in thousands):

	Three months ended
	March 31,
	2018			2017
Earnings before income taxes	$	24,937		$	14,868
Income taxes at statutory rate	5,237			5,204
Effect of:
Dividends-received deduction	(25		)	(79		)
Tax-exempt interest	(279		)	(633		)
Other	(80		)	(134		)
Provision for income taxes as shown on the Consolidated Statements of Earnings	$	4,853		$	4,358
GAAP effective tax rate	19.5		%	29.3		%

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Additional Information (Tables)

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

We made the following payments that we do not separately disclose in the Consolidated Statements of Cash Flows ($ in thousands):

	Three months ended
	March 31,
	2018		2017
Income tax payments	$	0	$	3,100
Interest payments on debt	6,875		6,875
Interest payments on capital leases	15		21

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Insurance Reserves (Tables)

3 Months Ended

Mar. 31, 2018

Insurance [Abstract]

Liability for unpaid losses and LAE

The following table provides an analysis of changes in the liability for unpaid losses and LAE on a GAAP basis ($ in thousands):

	Three months ended
	March 31,
	2018			2017
Balance at Beginning of Period
Unpaid losses on known claims	$	264,470		$	238,412
IBNR losses	312,516			306,641
LAE	138,112			140,402
Total unpaid losses and LAE	715,098			685,455
Reinsurance recoverables	(31,609		)	(17,130		)
Unpaid losses and LAE, net of reinsurance recoverables	683,489			668,325
Current Activity
Loss and LAE incurred:
Current accident year	273,408			277,044
Prior accident years	(8,856		)	(6,368		)
Total loss and LAE incurred	264,552			270,676
Loss and LAE payments:
Current accident year	(89,106		)	(96,869		)
Prior accident years	(177,479		)	(179,319		)
Total loss and LAE payments	(266,585		)	(276,187		)
Balance at End of Period
Unpaid losses and LAE, net of reinsurance recoverables	681,457			662,814
Add back reinsurance recoverables	19,549			16,133
Total unpaid losses and LAE	701,006			678,947
Unpaid losses on known claims	247,940			233,303
IBNR losses	318,281			307,932
LAE	134,786			137,712
Total unpaid losses and LAE	$	701,006		$	678,947

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Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Schedule of Other Comprehensive Income Before and After Tax

The components of other comprehensive income before and after tax are as follows ($ in thousands):

	Three months ended March 31,
	2018									2017
	Before Tax			Income Tax			Net			Before Tax			Income Tax			Net
Accumulated change in post-retirement benefit liability, beginning of period	$	829		$	(290	)	$	539		$	1,033		$	(361	)	$	671
Cumulative effect of change in accounting principle	0			116			116			0			0			0
Effect on other comprehensive income	(2		)	0			(1		)	(13		)	4			(8		)
Accumulated change in post-retirement benefit liability, end of period	827			(174		)	653			1,020			(357		)	663
Accumulated unrealized gains on investments, net, beginning of period	28,421			(9,204		)	19,217			11,133			(3,896		)	7,236
Cumulative effect of change in accounting principle	(27,192		)	8,948			(18,244		)	0			0			0
Other comprehensive (loss) income before reclassification (1)	(18,344		)	3,852			(14,492		)	10,664			(3,733		)	6,932
Reclassification adjustment for other-than-temporary impairments included in net income (1)	1,588			(334		)	1,255			10			(3		)	6
Reclassification adjustment for realized losses (gains) included in net income (1)	518			(109		)	409			(519		)	182			(337		)
Effect on other comprehensive income	(16,238		)	3,410			(12,828		)	10,155			(3,554		)	6,601
Accumulated unrealized (losses) gains on investments, net, end of period	(15,009		)	3,154			(11,855		)	21,288			(7,451		)	13,837
Accumulated other comprehensive income, beginning of period	29,250			(9,494		)	19,756			12,165			(4,258		)	7,907
Cumulative effect of change in accounting principle	(27,192		)	9,064			(18,128		)	0			0			0
Change in post-retirement benefit liability	(2		)	0			(1		)	(13		)	4			(8		)
Change in unrealized (losses) gains on investments, net (1)	(16,238		)	3,410			(12,828		)	10,155			(3,554		)	6,601
Effect on other comprehensive income	(43,432		)	12,474			(30,958		)	10,143			(3,550		)	6,593
Accumulated other comprehensive (loss) income, end of period	$	(14,182	)	$	2,980		$	(11,202	)	$	22,308		$	(7,808	)	$	14,500

(1) The amounts for 2018 are for fixed maturities only.

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Revenues and Earnings Before Income Taxes

The following table provides revenues by segment and a reconciliation to "Total revenues" as reported on the Consolidated Statements of Earnings ($ in thousands):

	Three months ended
	March 31,
Gross written premium:	2018			2017
Personal Auto	$	370,193		$	324,352
Commercial Auto	47,739			42,785
Classic Collector	3,660			3,565
Total gross written premium	421,592			370,702
Ceded reinsurance:
Personal Auto	(2,077		)	(983		)
Commercial Auto	(1,379		)	(1,412		)
Classic Collector	(260		)	(213		)
Total ceded reinsurance	(3,716		)	(2,608		)
Net written premium:
Personal Auto	368,116			323,369
Commercial Auto	46,360			41,373
Classic Collector	3,400			3,352
Total net written premium	417,876			368,094
Change in unearned premium:
Personal Auto	(57,817		)	(20,983		)
Commercial Auto	(6,532		)	(6,170		)
Classic Collector	460			428
Total change in unearned premium	(63,889		)	(26,726		)
Earned premium:
Personal Auto	310,298			302,386
Commercial Auto	39,828			35,203
Classic Collector	3,860			3,780
Total earned premium	353,987			341,368
Installment and other fee income:
Personal Auto	24,281			23,937
Commercial Auto	3,114			2,802
Classic Collector	0			0
Total installment and other fee income	27,395			26,739
Net investment income	9,786			8,695
Net realized gains on investments	(2,832		)	509
Other income	430			275
Total revenues	$	388,766		$	377,587

The following tables present the underwriting income and combined ratio on a statutory accident year basis with reconciliations to "Earnings before income taxes" as presented on the Consolidated Statements of Earnings ($ in thousands). We do not allocate assets or "Provision for income taxes" to operating segments.

	Three months ended March 31, 2018
	Personal Auto				Commercial Auto					Classic Collector					Total
	Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)
Statutory accident year underwriting income	$	6,311	94.8	%	$	812		95.2	%	$	613		88.1	%	$	7,737		94.7	%
Bad debt charge-offs	3,363				392					(44		)			3,711
Favorable (unfavorable) development on prior accident years	10,555				(1,362		)			(337		)			8,856
Statutory calendar year underwriting income	20,229		90.5	%	(158		)	97.8	%	233			98.2	%	20,304			91.3	%
Statutory-to-GAAP underwriting income differences															6,005
GAAP calendar year underwriting income															26,309			92.6	%
Net investment income															9,786
Net realized gains on investments															(2,832		)
Other income															430
Interest expense															(3,509		)
Corporate general and administrative expenses															(4,743		)
Other expenses															(505		)
Earnings before income taxes															$	24,937
(1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

	Three months ended March 31, 2017
	Personal Auto				Commercial Auto					Classic Collector				Total
	Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)		Pre-tax Profit (Loss)		Combined Ratio (1)		Pre-tax Profit (Loss)			Combined Ratio (1)
Statutory accident year underwriting income	$	1,594	98.3	%	$	629		95.3	%	$	335	95.3	%	$	2,558		98.0	%
Bad debt charge-offs	2,251				291					10				2,552
Favorable (unfavorable) development on prior accident years	6,986				(874		)			256				6,368
Statutory calendar year underwriting income	10,831		95.2	%	45			97.1	%	602		88.3	%	11,478			95.4	%
Statutory-to-GAAP underwriting income differences														14
GAAP calendar year underwriting income														11,492			96.6	%
Net investment income														8,695
Net realized gains on investments														509
Other income														275
Interest expense														(3,512		)
Corporate general and administrative expenses														(2,271		)
Other expenses														(322		)
Earnings before income taxes														$	14,868
(1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

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Significant Reporting And Accounting Policies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) state	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Accounting Policies [Abstract]
Number of states licensed to write insurance | state	50
Schedule of Available-for-sale Securities [Line Items]
Cumulative effect of change in accounting principle			$ (10)	$ (3,808)
Unrealized holding gains on securities arising during period, net of tax	$ (14,492)	$ 6,932
Installment and other fee income	$ 27,395	26,739
Accounting Standards Update 2018-05
Schedule of Available-for-sale Securities [Line Items]
Cumulative effect of change in accounting principle		400
Accounting Standards Update 2016-16
Schedule of Available-for-sale Securities [Line Items]
Cumulative effect of change in accounting principle		(100)
Accounting Standards Update 2016-01
Schedule of Available-for-sale Securities [Line Items]
Cumulative effect of change in accounting principle		17,700
Accounting Standards Update 2014-09
Schedule of Available-for-sale Securities [Line Items]
Cumulative effect of change in accounting principle		$ 4,500

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Significant Reporting And Accounting Policies - Effect of Revenue Standard on the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Agents' balances and premium receivable	$ 557,206	$ 507,963
Current and deferred income taxes	9,091	10,543
Total assets	2,551,466	2,474,484
Other liabilities	110,996	119,831
Shareholders' equity	717,916	715,812	$ 705,225	$ 699,187
Total liabilities and shareholders' equity	$ 2,551,466	2,474,484
As Reported
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Agents' balances and premium receivable		508,100
Current and deferred income taxes		9,400
Total assets		2,473,400
Other liabilities		114,300
Shareholders' equity		720,300
Total liabilities and shareholders' equity		2,473,400
Accounting Standards Update 2014-09 | As Adjusted
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Agents' balances and premium receivable		(100)
Current and deferred income taxes		1,200
Total assets		1,100
Other liabilities		5,500
Shareholders' equity		(4,500)
Total liabilities and shareholders' equity		$ 1,100

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Significant Reporting And Accounting Policies - Effect of Revenue Standard on the Consolidated Statement of Earnigns (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Installment and other fee income	$ 27,395	$ 26,739
Total revenues	388,766	377,587
Earnings before income taxes	24,937	14,868
Provision for income taxes	4,853	4,358
Net earnings	$ 20,083	$ 10,510	$ 34,214
Basic (usd per share)	$ 1.84	$ 0.96
Diluted (usd per share)	$ 1.82	$ 0.94
As Reported
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Installment and other fee income		$ 26,900
Total revenues		377,800
Earnings before income taxes		15,100
Provision for income taxes		4,400
Net earnings		$ 10,600
Basic (usd per share)		$ 0
Diluted (usd per share)		$ 0
Accounting Standards Update 2014-09 | As Adjusted
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Installment and other fee income		$ (200)
Total revenues		(200)
Earnings before income taxes		(200)
Provision for income taxes		(100)
Net earnings		$ (100)
Basic (usd per share)		$ 0
Diluted (usd per share)		$ 0

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Computation of Net Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Computation of net earnings per share
Net earnings	$ 20,083	$ 10,510	$ 34,214
Average basic shares outstanding (shares)	10,915	10,998
Basic net earnings per share (usd per share)	$ 1.84	$ 0.96
Average diluted shares outstanding (shares)	11,009	11,127
Diluted net earnings per share (usd per share)	$ 1.82	$ 0.94
Restricted stock not vested
Computation of net earnings per share
Dilutive shares (shares)	8	33
Dilutive effect of Performance Share Plan
Computation of net earnings per share
Dilutive shares (shares)	86	96

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Fair Value - Fair Value by Hierarchy (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 1,497,930	$ 1,539,653
Recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Long-term debt	286,300	290,800
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	88,793	107,589
Long-term debt	286,330	290,824
Fair Value | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	1,497,930	1,441,107
Fair Value | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	90,498	96,004
Fair Value | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	2,541
Fair Value | Recurring basis
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	88,793	107,589
Total cash and investments	$ 1,677,221	$ 1,647,242
Percentage of total cash and investments (percent)	100.00%	100.00%
Fair Value | Recurring basis | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 1,497,930	$ 1,441,107
Fair Value | Recurring basis | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	124,757	60,528
Fair Value | Recurring basis | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	296,814	494,211
Fair Value | Recurring basis | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	427,068	381,561
Fair Value | Recurring basis | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	365,007	350,992
Fair Value | Recurring basis | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	62,061	30,569
Fair Value | Recurring basis | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	128,484	62,418
Fair Value | Recurring basis | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	520,807	442,390
Fair Value | Recurring basis | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	90,498	96,004
Fair Value | Recurring basis | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	2,541
Fair Value | Recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	88,793	107,589
Total cash and investments	$ 304,048	$ 264,121
Percentage of total cash and investments (percent)	18.10%	16.00%
Fair Value | Recurring basis | Level 1 | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 124,757	$ 60,528
Fair Value | Recurring basis | Level 1 | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	124,757	60,528
Fair Value | Recurring basis | Level 1 | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	90,498	96,004
Fair Value | Recurring basis | Level 1 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	0	0
Total cash and investments	$ 1,351,794	$ 1,379,373
Percentage of total cash and investments (percent)	80.60%	83.70%
Fair Value | Recurring basis | Level 2 | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 1,351,794	$ 1,376,832
Fair Value | Recurring basis | Level 2 | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 2 | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	296,048	490,724
Fair Value | Recurring basis | Level 2 | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	424,211	381,561
Fair Value | Recurring basis | Level 2 | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	365,007	350,992
Fair Value | Recurring basis | Level 2 | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	59,204	30,569
Fair Value | Recurring basis | Level 2 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	110,836	62,266
Fair Value | Recurring basis | Level 2 | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	520,698	442,281
Fair Value | Recurring basis | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 2 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	2,541
Fair Value | Recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	0	0
Total cash and investments	$ 21,379	$ 3,748
Percentage of total cash and investments (percent)	1.30%	0.20%
Fair Value | Recurring basis | Level 3 | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 21,379	$ 3,748
Fair Value | Recurring basis | Level 3 | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	766	3,488
Fair Value | Recurring basis | Level 3 | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	2,857	0
Fair Value | Recurring basis | Level 3 | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	2,857	0
Fair Value | Recurring basis | Level 3 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	17,647	152
Fair Value | Recurring basis | Level 3 | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	109	108
Fair Value | Recurring basis | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 0	$ 0

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Fair Value - Level 3 Investments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) security Securities	Mar. 31, 2017 USD ($) Securities
Level 3 reconciliation
Number of securities purchased and new issues | Securities	8
Number of securities, exchange of a rate bond for an unrated refund bond, transfers into level 3 | Securities	1	1
Number of securities transferred from level 1 to level 2 | Securities	0
Level 3
Level 3 reconciliation
Balance at beginning of period	$ 3,748	$ 4,938
Included in net earnings	(10)	(30)
Included in other comprehensive income	41	(6)
Purchases	20,576	6,259
Sales	(3,360)	(694)
Settlements	(261)	(180)
Transfers in	645	329
Balance at end of period	$ 21,379	10,616
Number of positions (securities) | security	11
Level 3 | Non-binding broker quotes
Level 3 reconciliation
Number of positions (securities) | security	6
Level 3 | Nationally recognized pricing service
Level 3 reconciliation
Number of positions (securities) | security	4
State and Municipal | Level 3
Level 3 reconciliation
Balance at beginning of period	$ 3,488	3,860
Included in net earnings	(10)	(31)
Included in other comprehensive income	3	15
Purchases	0	0
Sales	(3,360)	(694)
Settlements	0	0
Transfers in	645	329
Balance at end of period	766	3,479
Asset-backed securities | Level 3
Level 3 reconciliation
Balance at beginning of period	152	412
Included in net earnings	0	0
Included in other comprehensive income	27	1
Purchases	17,729	4,259
Sales	0	0
Settlements	(261)	(88)
Transfers in	0	0
Balance at end of period	17,647	4,584
Corporates | Level 3
Level 3 reconciliation
Balance at beginning of period	108	666
Included in net earnings	0	1
Included in other comprehensive income	1	(22)
Purchases	0	2,000
Sales	0	0
Settlements	0	(92)
Transfers in	0	0
Balance at end of period	109	2,553
Mortgage- Backed Securities
Level 3 reconciliation
Balance at beginning of period	0	0
Included in net earnings	0	0
Included in other comprehensive income	10	0
Purchases		0
Sales		0
Settlements	0	0
Transfers in		0
Balance at end of period	$ 2,857	$ 0

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Fair Value - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	$ 1,497,930	$ 1,539,653
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	88,793	107,589
Total cash and investments	1,677,221	1,647,242
Long-term debt	273,865	273,809
Carrying Value | Fixed Maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	1,497,930	1,441,107
Carrying Value | Equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	90,498	96,004
Carrying Value | Short-term investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	0	2,541
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	88,793	107,589
Total cash and investments	1,677,221	1,647,242
Long-term debt	286,330	290,824
Fair Value | Fixed Maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	1,497,930	1,441,107
Fair Value | Equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	90,498	96,004
Fair Value | Short-term investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	$ 0	$ 2,541

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Investments - Textual (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of available-for-sale securities	$ 335,600	$ 42,100
Receivable for securities sold	120	5,200	$ 1,700
Gross realized gains	2,900	700
Gross realized losses	$ 1,600	$ 200

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Investments - Investments by major category (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fixed Maturities
Amortized Cost, Fixed Maturities	$ 1,512,939	$ 1,439,878
Fixed maturities, Fair Value	1,497,930	1,441,107
Equity Securities
Equity securities, Amortized cost	65,913	68,812
Equity securities, Fair Value	90,498	96,004
Available-for-sale securities, Amortized Cost or Cost, Total	1,512,939	1,511,232
Available-for-sale securities, Gross Unrealized Gains	3,612	36,463
Available-for-sale securities, Gross Unrealized Losses	(18,621)	(8,042)
Available-for-sale securities, Fair Value	1,497,930	1,539,653
Available-for-sale securities, OTTI Recognized in Accumulated OCI	(72)	(1,564)
Fixed Maturities
Fixed Maturities
Amortized Cost, Fixed Maturities	1,512,939	1,439,878
Fixed maturities, Gross Unrealized Gains	3,612	9,271
Fixed maturities, Gross Unrealized Losses	(18,621)	(8,042)
Fixed maturities, Fair Value	1,497,930	1,441,107
Fixed maturities, OTTI Recognized in Accumulated OCI	(72)	(1,564)
U.S. government
Fixed Maturities
Amortized Cost, Fixed Maturities	125,887	61,196
Fixed maturities, Gross Unrealized Gains	58	0
Fixed maturities, Gross Unrealized Losses	(1,188)	(668)
Fixed maturities, Fair Value	124,757	60,528
Fixed maturities, OTTI Recognized in Accumulated OCI	0	0
State and Municipal
Fixed Maturities
Amortized Cost, Fixed Maturities	297,994	492,442
Fixed maturities, Gross Unrealized Gains	1,031	2,768
Fixed maturities, Gross Unrealized Losses	(2,211)	(999)
Fixed maturities, Fair Value	296,814	494,211
Fixed maturities, OTTI Recognized in Accumulated OCI	0	(46)
Mortgage- Backed Securities
Fixed Maturities
Amortized Cost, Fixed Maturities	435,372	384,481
Fixed maturities, Gross Unrealized Gains	693	1,830
Fixed maturities, Gross Unrealized Losses	(8,996)	(4,750)
Fixed maturities, Fair Value	427,068	381,561
Fixed maturities, OTTI Recognized in Accumulated OCI	(72)	(1,479)
Residential
Fixed Maturities
Amortized Cost, Fixed Maturities	372,319	353,277
Fixed maturities, Gross Unrealized Gains	669	1,812
Fixed maturities, Gross Unrealized Losses	(7,981)	(4,097)
Fixed maturities, Fair Value	365,007	350,992
Fixed maturities, OTTI Recognized in Accumulated OCI	(72)	(1,479)
Commercial
Fixed Maturities
Amortized Cost, Fixed Maturities	63,053	31,204
Fixed maturities, Gross Unrealized Gains	23	18
Fixed maturities, Gross Unrealized Losses	(1,016)	(653)
Fixed maturities, Fair Value	62,061	30,569
Fixed maturities, OTTI Recognized in Accumulated OCI	0	0
Asset-backed securities
Fixed Maturities
Amortized Cost, Fixed Maturities	129,010	62,552
Fixed maturities, Gross Unrealized Gains	104	62
Fixed maturities, Gross Unrealized Losses	(630)	(196)
Fixed maturities, Fair Value	128,484	62,418
Fixed maturities, OTTI Recognized in Accumulated OCI	0	(8)
Corporates
Fixed Maturities
Amortized Cost, Fixed Maturities	524,676	439,208
Fixed maturities, Gross Unrealized Gains	1,726	4,610
Fixed maturities, Gross Unrealized Losses	(5,595)	(1,429)
Fixed maturities, Fair Value	520,807	442,390
Fixed maturities, OTTI Recognized in Accumulated OCI	0	(31)
Equity securities
Equity Securities
Equity securities, Amortized cost		68,812
Equity securities, Gross Unrealized Gains		27,192
Equity securities, Gross Unrealized Losses		0
Equity securities, Fair Value		96,004
Equity securities, OTTI Recognized in Accumulated OCI		0
Short-term investments
Equity Securities
Equity securities, Amortized cost	0	2,541
Equity securities, Gross Unrealized Gains	0	0
Equity securities, Gross Unrealized Losses	0	0
Equity securities, Fair Value	0	2,541
Equity securities, OTTI Recognized in Accumulated OCI	$ 0	$ 0

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Investments - Continuous loss position investments (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) security	Dec. 31, 2017 USD ($) security
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	996	722
Maximum
Schedule of Available-for-sale Securities [Line Items]
Percentage of book value (percent)	95.00%
Minimum
Schedule of Available-for-sale Securities [Line Items]
Unrealized loss amount	$ 100,000
Less than 12 Months
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	680	398
Less than 12 Months, Fair Value	$ 849,333,000	$ 489,771,000
Less than 12 Months, Gross Unrealized Losses	$ (11,252,000)	$ (3,233,000)
Unrealized Losses as Percentage of Cost	1.30%	0.70%
Less than 12 Months | Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	680	398
Less than 12 Months, Fair Value	$ 849,333,000	$ 489,771,000
Less than 12 Months, Gross Unrealized Losses	$ (11,252,000)	$ (3,233,000)
Unrealized Losses as Percentage of Cost	1.30%	0.70%
Less than 12 Months | U.S. government
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	28	25
Less than 12 Months, Fair Value	$ 48,202,000	$ 46,160,000
Less than 12 Months, Gross Unrealized Losses	$ (881,000)	$ (422,000)
Unrealized Losses as Percentage of Cost	1.80%	0.90%
Less than 12 Months | State and Municipal
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	99	82
Less than 12 Months, Fair Value	$ 184,046,000	$ 163,997,000
Less than 12 Months, Gross Unrealized Losses	$ (2,147,000)	$ (939,000)
Unrealized Losses as Percentage of Cost	1.20%	0.60%
Less than 12 Months | Mortgage- Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	278	156
Less than 12 Months, Fair Value	$ 174,756,000	$ 85,419,000
Less than 12 Months, Gross Unrealized Losses	$ (2,427,000)	$ (483,000)
Unrealized Losses as Percentage of Cost	1.40%	0.60%
Less than 12 Months | Residential
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	263	154
Less than 12 Months, Fair Value	$ 144,098,000	$ 81,841,000
Less than 12 Months, Gross Unrealized Losses	$ (2,250,000)	$ (453,000)
Unrealized Losses as Percentage of Cost	1.50%	0.60%
Less than 12 Months | Commercial
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	15	2
Less than 12 Months, Fair Value	$ 30,658,000	$ 3,578,000
Less than 12 Months, Gross Unrealized Losses	$ (177,000)	$ (30,000)
Unrealized Losses as Percentage of Cost	0.60%	0.80%
Less than 12 Months | Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	43	31
Less than 12 Months, Fair Value	$ 74,670,000	$ 35,407,000
Less than 12 Months, Gross Unrealized Losses	$ (628,000)	$ (193,000)
Unrealized Losses as Percentage of Cost	0.80%	0.50%
Less than 12 Months | Corporates
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	232	104
Less than 12 Months, Fair Value	$ 367,660,000	$ 158,788,000
Less than 12 Months, Gross Unrealized Losses	$ (5,168,000)	$ (1,197,000)
Unrealized Losses as Percentage of Cost	1.40%	0.70%
Less than 12 Months | Equity securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security		0
Less than 12 Months, Fair Value		$ 0
Less than 12 Months, Gross Unrealized Losses		$ 0
Unrealized Losses as Percentage of Cost		0.00%
Less than 12 Months | Short-term investments
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	0	0
Less than 12 Months, Fair Value	$ 0	$ 0
Less than 12 Months, Gross Unrealized Losses	$ 0	$ 0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
12 Months or More
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	316	324
Unrealized Losses as Percentage of Cost	3.90%	2.40%
12 Months or More, Fair Value	$ 179,380,000	$ 193,309,000
12 Months of More, Gross Unrealized Losses	$ (7,369,000)	$ (4,809,000)
12 Months or More | Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	316	324
Unrealized Losses as Percentage of Cost	3.90%	2.40%
12 Months or More, Fair Value	$ 179,380,000	$ 193,309,000
12 Months of More, Gross Unrealized Losses	$ (7,369,000)	$ (4,809,000)
12 Months or More | U.S. government
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	16	16
Unrealized Losses as Percentage of Cost	2.40%	1.70%
12 Months or More, Fair Value	$ 12,743,000	$ 14,368,000
12 Months of More, Gross Unrealized Losses	$ (307,000)	$ (246,000)
12 Months or More | State and Municipal
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	4	5
Unrealized Losses as Percentage of Cost	1.40%	0.60%
12 Months or More, Fair Value	$ 4,573,000	$ 10,529,000
12 Months of More, Gross Unrealized Losses	$ (64,000)	$ (60,000)
12 Months or More | Mortgage- Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	280	288
Unrealized Losses as Percentage of Cost	4.40%	2.80%
12 Months or More, Fair Value	$ 142,480,000	$ 150,383,000
12 Months of More, Gross Unrealized Losses	$ (6,569,000)	$ (4,267,000)
12 Months or More | Residential
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	272	279
Unrealized Losses as Percentage of Cost	4.60%	2.80%
12 Months or More, Fair Value	$ 119,273,000	$ 127,317,000
12 Months of More, Gross Unrealized Losses	$ (5,730,000)	$ (3,644,000)
12 Months or More | Commercial
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	8	9
Unrealized Losses as Percentage of Cost	3.50%	2.60%
12 Months or More, Fair Value	$ 23,206,000	$ 23,066,000
12 Months of More, Gross Unrealized Losses	$ (839,000)	$ (623,000)
12 Months or More | Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	1	2
Unrealized Losses as Percentage of Cost	0.10%	0.20%
12 Months or More, Fair Value	$ 1,458,000	$ 1,561,000
12 Months of More, Gross Unrealized Losses	$ (2,000)	$ (3,000)
12 Months or More | Corporates
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	15	13
Unrealized Losses as Percentage of Cost	2.30%	1.40%
12 Months or More, Fair Value	$ 18,126,000	$ 16,468,000
12 Months of More, Gross Unrealized Losses	$ (427,000)	$ (232,000)
12 Months or More | Equity securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security		0
Unrealized Losses as Percentage of Cost		0.00%
12 Months or More, Fair Value		$ 0
12 Months of More, Gross Unrealized Losses		$ 0
12 Months or More | Short-term investments
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
12 Months or More, Fair Value	$ 0	$ 0
12 Months of More, Gross Unrealized Losses	$ 0	$ 0

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Investments - Summary of unrealized gains and losses (Details) - security	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Number of positions held with unrealized gains (positions)	302	496
Number of positions held with unrealized losses (positions)	996	722
Number of positions held that individually exceed unrealized gains of $500,000 (positions)	0	2
Number of positions held that individually exceed unrealized losses of $500,000 (positions)	0	0
Percentage of positions held with unrealized gains that were investment grade (percent)	84.00%	81.00%
Percentage of positions held with unrealized losses that were investment grade (percent)	94.00%	97.00%
Percentage of fair value held with unrealized gains that were investment grade (percent)	88.00%	81.00%
Percentage of fair value held with unrealized losses that were investment grade (percent)	93.00%	95.00%

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Investments - Unrealized losses by age and severity (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	$ 1,028,713
Total Gross Unrealized Losses	(18,621)
Three months or less
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	454,565
Total Gross Unrealized Losses	(3,506)
Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	247,851
Total Gross Unrealized Losses	(4,193)
Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	139,484
Total Gross Unrealized Losses	(3,392)
Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	7,432
Total Gross Unrealized Losses	(161)
Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	179,380
Total Gross Unrealized Losses	(7,369)
Less Than 5% as a Percentage of Amortized Cost or Cost
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(15,801)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Three months or less
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(3,394)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(4,007)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(3,392)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(161)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(4,846)	[1]
5% - 10% as a Percentage of Amortized Cost or Cost
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(2,820)	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Three months or less
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(112)	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(185)	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(2,523)	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Three months or less
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	$ 0	[1]

[1] As a percentage of amortized cost or cost.

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Investments - Change in unrealized gains and losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax	$ (18,344)	$ 10,664
Unrealized holding gains (losses) on securities arising during the period, tax effects	3,852	(3,733)
Unrealized holding gains (losses) on securities arising during period, net of tax	(14,492)	6,932
Realized gains on securities sold, pre-tax	(1,363)	(519)
Realized gains on securities sold, tax effects	(109)	182
Realized gains on securities sold, net of tax	409	(337)
Net impairment losses recognized in earnings	(1,588)	(10)
Impairment loss recognized in earnings, tax effects	(334)	(3)
Impairment loss recognized in earnings	1,255	6
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	(3,410)	3,554
Change in unrealized gains (losses) on marketable securities, net, net of tax	(12,828)	6,601
Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax	(18,346)	4,368
Realized gains on securities sold, pre-tax	(519)	(52)
Net impairment losses recognized in earnings	1,588	10
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax	(16,238)	4,429
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax		6,294
Realized gains on securities sold, pre-tax		569
Net impairment losses recognized in earnings		0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax		5,725
Short-term investments
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax	1	3
Realized gains on securities sold, pre-tax	1	1
Net impairment losses recognized in earnings	0	0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax	$ 0	$ 1

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Investments - Credit losses rollforward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Credit losses on fixed maturity securities
Beginning balance	$ 753	$ 557
Percent change, Net realized gains on sales	162.60%
Additions for: Previously impaired securities	$ 278	0
Additions for: Newly impaired securities	7	10
Reductions for: Securities sold and paid down	(41)	(24)
Ending balance	$ 996	$ 542

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Investments - Investments by contractual maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	$ 34,850
One year or less, amortized cost	34,848
After one year through five years, fair value	649,692
After one year through five years, amortized cost	653,913
After five years through ten years, fair value	226,075
After five years through ten years, amortized cost	228,286
After ten years, fair value	31,761
After ten years, amortized cost basis	31,510
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	555,552
Mortgage-backed, asset-backed and collateralized mortgage obligations, amortized cost	564,382
Fair Value, Fixed maturities	1,497,930	$ 1,441,107
Amortized Cost, Fixed Maturities	1,512,939	$ 1,439,878
Securities with Unrealized Gains
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	9,473
After one year through five years, fair value	188,968
After five years through ten years, fair value	68,219
After ten years, fair value	31,179
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	143,210
Fair Value, Fixed maturities	441,049
Securities with Unrealized Losses
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	24,024
After one year through five years, fair value	453,537
After five years through ten years, fair value	157,207
After ten years, fair value	582
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	393,363
Fair Value, Fixed maturities	1,028,713
Securities with No Unrealized Gains or Losses
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	1,353
After one year through five years, fair value	7,187
After five years through ten years, fair value	649
After ten years, fair value	0
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	18,979
Fair Value, Fixed maturities	$ 28,168

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Investments - Unrealized Gains and Losses Relating to Equities (Details) - Equity securities $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Gain (Loss) on Investments [Line Items]
Net losses recognized during the period on equity securities	$ (726)
Less: Net gains recognized during the period on equity securities sold	(1,881)
Unrealized losses recognized during the period on equity securities still held at the reporting date	$ (2,607)

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Long-Term Debt - Long-term Debt Less Unamortized Debt Issuance Costs (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2012
Debt Instrument [Line Items]
Long-term debt less unamortized debt issuance costs	$ 273,865,000	$ 273,809,000
Senior Notes | Senior Notes Due 2022
Debt Instrument [Line Items]
Principal	275,000,000	275,000,000	$ 275,000,000
Unamortized debt issuance costs	1,135,000	1,191,000
Long-term debt less unamortized debt issuance costs	$ 273,865,000	$ 273,809,000

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Long-Term Debt (Details) - USD ($)	1 Months Ended	3 Months Ended
	Aug. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2012
Debt Instrument [Line Items]
Long-term debt, fair value		$ 289,831,000	$ 290,824,000
US Treasury Note
Debt Instrument [Line Items]
Term of note used (years)		10 years
Effective percentage (percent)		2.741%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility capacity	$ 50,000,000
Term of revolving credit facility (years)	3 years
Senior Notes Due 2022 | Senior Notes
Debt Instrument [Line Items]
Principal		$ 275,000,000	$ 275,000,000	$ 275,000,000
Coupon rate (percent)				5.00%
Capitalized debt issuance costs				$ 2,200,000
Long-term debt, fair value		$ 286,300,000
10-year U.S. Treasury note | Senior Notes Due 2022 | Senior Notes
Debt Instrument [Line Items]
Basis points		1.24%

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income tax reconciliation
Earnings before income taxes	$ 24,937	$ 14,868
Income taxes at statutory rate	5,237	5,204
Dividends-received deduction	(25)	(79)
Tax-exempt interest	(279)	(633)
Other	(80)	(134)
Provision for income taxes as shown on the Consolidated Statements of Earnings	$ 4,853	$ 4,358
GAAP effective tax rate (percent)	19.50%	29.30%

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Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Income tax payments	$ 0	$ 3,100
Interest payments on debt	6,875	6,875
Interest payments on capital leases	15	$ 21
Negative cash book balances	$ 49,200		$ 49,700

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Additional Information - Merger with Kemper Corporation (Details) - Kemper Corporation $ / shares in Units, $ in Billions	Feb. 13, 2018 USD ($) $ / shares shares	Feb. 12, 2018 USD ($) employee $ / shares
Business Acquisition [Line Items]
Transaction value | $	$ 1.4	$ 1.3
Weighted average share price (usd per share)		$ 64.40
Share price (usd per share)		57.75
Business acquisition, share price (usd per share)	$ 129.00	$ 121.01
Entity Number of Employees | employee		5,550
Cash, mixed consideration (use per share)	$ 51.60
Stock, mixed consideration (shares) | shares	1.2019
Cash, cash consideration (usd per share)	$ 129.00
Stock, stock consideration (shares) | shares	2.0031
Percentage of ownership	20.00%

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Insurance Reserves - Changes in the liability for unpaid losses and LAE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Unpaid losses on known claims, balance at beginning of period	$ 264,470	$ 238,412
IBNR losses, balance at beginning of period	312,516	306,641
LAE, balance at beginning of period	138,112	140,402
Total unpaid losses and LAE, balance at beginning of period	715,098	685,455
Reinsurance recoverables, balance at beginning of period	(31,609)	(17,130)
Unpaid losses and LAE, net of reinsurance recoverables, balance at beginning of period	683,489	668,325
Loss and LAE incurred, current accident year	273,408	277,044
Loss and LAE incurred, Prior accident years	(8,856)	(6,368)
Total loss and LAE incurred	264,552	270,676
Loss and LAE payments, current accident year	(89,106)	(96,869)
Loss and LAE payments, prior accident years	(177,479)	(179,319)
Total loss and LAE payments	(266,585)	(276,187)
Unpaid losses and LAE, net of reinsurance recoverables, balance at end of period	681,457	662,814
Add back reinsurance recoverables, balance at end of period	19,549	16,133
Total unpaid losses and LAE, balance at end of period	701,006	678,947
Unpaid losses on known claims, balance at end of period	247,940	233,303
IBNR losses, balance at end of period	318,281	307,932
LAE, balance at end of period	$ 134,786	$ 137,712

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Insurance Reserves - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Insurance [Abstract]
Favorable reserve development related to prior accident years	$ 8,856	$ 6,368

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Accumulated Other Comprehensive Income (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Before Tax [Abstract]
Accumulated other comprehensive income, beginning of period	$ 29,250,000	$ 12,165,000
Effect on other comprehensive income	(16,240,000)	10,143,000
Effect on other comprehensive income, including cumulative effect of change in accounting principle	(43,432,000)	10,143,000
Accumulated other comprehensive income, end of period	(14,182,000)	22,308,000
Income Tax [Abstract]
Accumulated other comprehensive income, beginning of period	(9,494,000)	(4,258,000)
Cumulative Effect of New Accounting Principle in Period of Adoption, Tax			$ 9,064,000
Effect on other comprehensive income	3,410,000	(3,550,000)
Effect on other comprehensive income, including cumulative effect of change in accounting principle	12,474,000	(3,550,000)
Accumulated other comprehensive income, end of period	2,980,000	(7,808,000)
Net [Abstract]
Accumulated other comprehensive income, beginning of period	19,756,000	7,907,000
Cumulative Effect of New Accounting Principle in Period of Adoption, Net of Tax			(18,128,000)
Other comprehensive (loss) income, net of tax	(12,829,000)	6,593,000
Effect on other comprehensive income, including cumulative effect of change in accounting principle	(30,958,000)	6,593,000
Accumulated other comprehensive income, end of period	(11,202,000)	14,500,000
Accumulated Change Post-retirement Benefit Liability
Before Tax [Abstract]
Accumulated other comprehensive income, beginning of period	829,000	1,033,000
Cumulative Effect of New Accounting Principle in Period of Adoption, Before Tax			0	$ 0
Effect on other comprehensive income	(2,000)	(13,000)
Accumulated other comprehensive income, end of period	827,000	1,020,000
Income Tax [Abstract]
Accumulated other comprehensive income, beginning of period	(290,000)	(361,000)
Cumulative Effect of New Accounting Principle in Period of Adoption, Tax			116,000	0
Effect on other comprehensive income	0	4,000
Accumulated other comprehensive income, end of period	(174,000)	(357,000)
Net [Abstract]
Accumulated other comprehensive income, beginning of period	539,000	671,000
Cumulative Effect of New Accounting Principle in Period of Adoption, Net of Tax			116,000	0
Other comprehensive (loss) income, net of tax	(1,000)	(8,000)
Accumulated other comprehensive income, end of period	653,000	663,000
Accumulated Unrealized Gains on Investments, Net and Other-than-Temporary Impairments
Before Tax [Abstract]
Accumulated other comprehensive income, beginning of period	28,421,000	11,133,000
Cumulative Effect of New Accounting Principle in Period of Adoption, Before Tax			(27,192,000)	0
Other comprehensive income (loss) before reclassification	(18,344,000)	10,664,000
Effect on other comprehensive income	(16,238,000)	10,155,000
Accumulated other comprehensive income, end of period	(15,009,000)	21,288,000
Income Tax [Abstract]
Accumulated other comprehensive income, beginning of period	(9,204,000)	(3,896,000)
Cumulative Effect of New Accounting Principle in Period of Adoption, Tax			8,948,000	0
Other comprehensive income (loss) before reclassification	3,852,000	(3,733,000)
Effect on other comprehensive income	3,410,000	(3,554,000)
Accumulated other comprehensive income, end of period	3,154,000	(7,451,000)
Net [Abstract]
Accumulated other comprehensive income, beginning of period	19,217,000	7,236,000
Cumulative Effect of New Accounting Principle in Period of Adoption, Net of Tax			$ (18,244,000)	$ 0
Other comprehensive income (loss) before reclassification	(14,492,000)	6,932,000
Other comprehensive (loss) income, net of tax	(12,828,000)	6,601,000
Accumulated other comprehensive income, end of period	(11,855,000)	13,837,000
Reclassification Adjustment for Other-than-Temporary Impairments
Before Tax [Abstract]
Reclassicification adjustment	1,588,000	10,000
Income Tax [Abstract]
Reclassification adjustment	(334,000)	(3,000)
Net [Abstract]
Reclassicification adjustment	1,255,000	6,000
Accumulated Unrealized Gains on Investments, Net
Before Tax [Abstract]
Reclassicification adjustment	518,000	(519,000)
Effect on other comprehensive income	(16,238,000)	10,155,000
Income Tax [Abstract]
Reclassification adjustment	(109,000)	182,000
Effect on other comprehensive income	3,410,000	(3,554,000)
Net [Abstract]
Reclassicification adjustment	409,000	(337,000)
Other comprehensive (loss) income, net of tax	$ (12,828,000)	$ 6,601,000

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Segment Information - Narrative (Details)	3 Months Ended
	Mar. 31, 2018 vehicle / policy vehicle segment
Segment Reporting [Abstract]
Number of operating segments | segment	3
Number of vehicles in fleet in target businesses (or fewer) | vehicle	10
Average vehicles per policy | vehicle / policy	1.9

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Segment Information - Revenues by segment and reconciliation to Total revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Gross written premium	$ 421,592	$ 370,702
Ceded reinsurance	(3,716)	(2,608)
Net written premium	417,876	368,094
Change in unearned premium	(63,889)	(26,726)
Earned premium	353,987	341,368
Installment and other fee income	27,395	26,739
Net investment income	9,786	8,695
Net realized gains on investments	(2,832)	509
Other income	430	275
Total revenues	388,766	377,587
Personal Auto
Segment Reporting Information [Line Items]
Gross written premium	370,193	324,352
Ceded reinsurance	(2,077)	(983)
Net written premium	368,116	323,369
Change in unearned premium	(57,817)	(20,983)
Earned premium	310,298	302,386
Installment and other fee income	24,281	23,937
Commercial Vehicle
Segment Reporting Information [Line Items]
Gross written premium	47,739	42,785
Ceded reinsurance	(1,379)	(1,412)
Net written premium	46,360	41,373
Change in unearned premium	(6,532)	(6,170)
Earned premium	39,828	35,203
Installment and other fee income	3,114	2,802
Classic Collector
Segment Reporting Information [Line Items]
Gross written premium	3,660	3,565
Ceded reinsurance	(260)	(213)
Net written premium	3,400	3,352
Change in unearned premium	460	428
Earned premium	3,860	3,780
Installment and other fee income	$ 0	$ 0

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Segment Information - Underwriting income and reconciliations to Earnings before income taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ 7,737	$ 2,558
Statutory accident year underwriting income, Combined Ratio	94.70%	98.00%
Bad debt charge-offs	$ 3,711	$ 2,552
Favorable (unfavorable) development on prior accident years	8,856	6,368
Statutory calendar year underwriting income	$ 20,304	$ 11,478
Statutory calendar year underwriting income, Combined Ratio	91.30%	95.40%
Statutory-to-GAAP underwriting income differences	$ 6,005	$ 14
GAAP calendar year underwriting income	$ 26,309	$ 11,492
GAAP calendar year underwriting income, Combined Ratio	92.60%	96.60%
Net investment income	$ 9,786	$ 8,695
Net realized gains on investments	(2,832)	509
Other income	430	275
Interest expense	(3,509)	(3,512)
Corporate general and administrative expenses	(4,743)	(2,271)
Other expenses	(505)	(322)
Earnings before income taxes	24,937	14,868
Personal Auto
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ 6,311	$ 1,594
Statutory accident year underwriting income, Combined Ratio	94.80%	98.30%
Bad debt charge-offs	$ 3,363	$ 2,251
Favorable (unfavorable) development on prior accident years	10,555	6,986
Statutory calendar year underwriting income	$ 20,229	$ 10,831
Statutory calendar year underwriting income, Combined Ratio	90.50%	95.20%
Commercial Vehicle
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ 812	$ 629
Statutory accident year underwriting income, Combined Ratio	95.20%	95.30%
Bad debt charge-offs	$ 392	$ 291
Favorable (unfavorable) development on prior accident years	(1,362)	(874)
Statutory calendar year underwriting income	$ (158)	$ 45
Statutory calendar year underwriting income, Combined Ratio	97.80%	97.10%
Classic Collector
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ 613	$ 335
Statutory accident year underwriting income, Combined Ratio	88.10%	95.30%
Bad debt charge-offs	$ (44)	$ 10
Favorable (unfavorable) development on prior accident years	(337)	256
Statutory calendar year underwriting income	$ 233	$ 602
Statutory calendar year underwriting income, Combined Ratio	98.20%	88.30%