10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

ý Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended September 30, 2014 or

¨ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from to

Commission file number 0-16533

ProAssurance Corporation

(Exact Name of Registrant as Specified in Its Charter)

Delaware	63-1261433
(State or Other Jurisdiction of Incorporation or Organization)	(IRS Employer Identification No.)
100 Brookwood Place, Birmingham, AL	35209
(Address of Principal Executive Offices)	(Zip Code)
(205) 877-4400
(Registrant’s Telephone Number, Including Area Code)	(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  ý    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  ý    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. (Check one):

Large accelerated filer	ý		Accelerated filer	¨
Non-accelerated filer	¨	(Do not check if a smaller reporting company)	Smaller reporting company	¨

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

As of October 31, 2014, there were 57,183,941 shares of the registrant’s common stock outstanding.

Forward-Looking Statements

Any statements in this Form 10-Q that are not historical facts are specifically identified as forward-looking statements. These statements are based upon our estimates and anticipation of future events and are subject to certain risks and uncertainties that could cause actual results to vary materially from the expected results described in the forward-looking statements. Forward-looking statements are identified by words such as, but not limited to, "anticipate," "believe," "estimate," "expect," "hope," "hopeful," "intend," "likely," "may," "optimistic," "possible," "potential," "preliminary," "project," "should," "will" and other analogous expressions. There are numerous factors that could cause our actual results to differ materially from those in the forward-looking statements. Thus, sentences and phrases that we use to convey our view of future events and trends are expressly designated as forward-looking statements as are sections of this Form 10-Q that are identified as giving our outlook on future business.

Forward-looking statements relating to our business include among other things: statements concerning future liquidity and capital requirements, investment valuation and performance, return on equity, financial ratios, net income, premiums, losses and loss reserve, premium rates and retention of current business, competition and market conditions, the expansion of product lines, the development or acquisition of business in new geographical areas, the availability of acceptable reinsurance, actions by regulators and rating agencies, court actions, legislative actions, payment or performance of obligations under indebtedness, payment of dividends, and other matters.

These forward-looking statements are subject to significant risks, assumptions and uncertainties, including, among other things, the following factors that could affect the actual outcome of future events:

Ÿ	changes in general economic conditions, including the impact of inflation or deflation and unemployment;
Ÿ	our ability to maintain our dividend payments;
Ÿ	regulatory, legislative and judicial actions or decisions that could affect our business plans or operations;
Ÿ	the enactment or repeal of tort reforms;
Ÿ	formation or dissolution of state-sponsored medical professional liability insurance entities that could remove or add sizable groups of physicians from or to the private insurance market;
Ÿ	changes in the interest rate environment;
Ÿ	changes in U.S. laws or government regulations regarding financial markets or market activity that may affect the U.S. economy and our business;
Ÿ	changes in the ability of the U.S. government to meet its obligations that may affect the U.S. economy and our business;
Ÿ	performance of financial markets affecting the fair value of our investments or making it difficult to determine the value of our investments;
Ÿ	changes in requirements or accounting policies and practices that may be adopted by our regulatory agencies, the Financial Accounting Standards Board, the Securities and Exchange Commission (SEC), the Public Company Accounting Oversight Board, or the New York Stock Exchange (NYSE) and that may affect our business;
Ÿ	changes in laws or government regulations affecting the financial services industry, the property and casualty insurance industry or particular insurance lines underwritten by our subsidiaries;
Ÿ	the effects of changes in the healthcare delivery system, including but not limited to the Patient Protection and Affordable Care Act (the Healthcare Reform Act);
Ÿ	consolidation of healthcare providers resulting in entities that are more likely to self-insure a substantial portion of their healthcare professional liability risk;
Ÿ	uncertainties inherent in the estimate of our loss and loss adjustment expense reserve and reinsurance recoverable;
Ÿ	changes in the availability, cost, quality, or collectability of insurance/reinsurance;
Ÿ	the results of litigation, including pre- or post-trial motions, trials and/or appeals we undertake;
Ÿ	allegations of bad faith which may arise from our handling of any particular claim, including failure to settle;
Ÿ	loss or consolidation of independent agents, agencies, brokers, or brokerage firms;
Ÿ	changes in our organization, compensation and benefit plans;
Ÿ	changes in the business or competitive environment may limit the effectiveness of our business strategy and impact our revenues;
Ÿ	our ability to retain and recruit senior management;
Ÿ	the availability, integrity and security of our technology infrastructure;
Ÿ	the impact of a catastrophic event, as it relates to both our operations and our insured risks;

2

Ÿ	the impact of acts of terrorism and acts of war;
Ÿ	the effects of terrorism related insurance legislation and laws;
Ÿ	assessments from guaranty funds;
Ÿ	our ability to achieve continued growth through expansion into other states or through acquisitions or business combinations;
Ÿ	changes to the ratings assigned by rating agencies to our insurance subsidiaries, individually or as a group;
Ÿ	provisions in our charter documents, Delaware law and state insurance laws may impede attempts to replace or remove management or may impede a takeover;
Ÿ	state insurance restrictions may prohibit assets held by our insurance subsidiaries, including cash and investment securities, from being used for general corporate purposes;
Ÿ	taxing authorities can take exception to our tax positions and cause us to incur significant amounts of legal and accounting costs and, if our defense is not successful, additional tax costs, including interest and penalties; and
Ÿ	expected benefits from completed and proposed acquisitions may not be achieved or may be delayed longer than expected due to business disruption; loss of customers, employees and key agents; increased operating costs or inability to achieve cost savings; and assumption of greater than expected liabilities, among other reasons.
Additional risks that could adversely affect the integration of Eastern Insurance Holdings, Inc. (Eastern) into ProAssurance, include, but are not limited to, the following:
Ÿ	the operations of ProAssurance and Eastern may not be integrated successfully, or such integration may take longer to accomplish than expected; and
Ÿ	operating costs, customer loss and business disruption following the transaction, including adverse effects on relationships with employees, may be greater than expected.
Additional risks that could arise from our membership in the Lloyd's of London market (Lloyd's) and our participation in Lloyd's Syndicate 1729 (Syndicate 1729) include, but are not limited to, the following:
Ÿ	members of Lloyd's are subject to levies by the Council of Lloyd's based on a percentage of the member's underwriting capacity, currently a maximum of 3%, but can be increased by Lloyd's;
Ÿ	Syndicate operating results can be affected by decisions made by the Council of Lloyd's over which the management of Syndicate 1729 has little ability to control, such as a decision to not approve the business plan of the Syndicate, or a decision to increase the capital required to continue operations, and by our obligation to pay levies to Lloyd's;
Ÿ	Lloyd's insurance and reinsurance relationships and distribution channels could be disrupted or Lloyd's trading licenses could be revoked making it more difficult for Syndicate 1729 to distribute and market its products; and
Ÿ	rating agencies could downgrade their ratings of Lloyd's as a whole.

Our results may differ materially from those we expect and discuss in any forward-looking statements. The principal risk factors that may cause these differences are described in "Item 1A, Risk Factors" in our Form 10-K and other documents we file with the SEC, such as our current reports on Form 8-K, and our regular reports on Form 10-Q.

We caution readers not to place undue reliance on any such forward-looking statements, which are based upon conditions existing only as of the date made, and advise readers that these factors could affect our financial performance and could cause actual results for future periods to differ materially from any opinions or statements expressed with respect to future periods in any current statements. Except as required by law or regulations, we do not undertake and specifically decline any obligation to publicly release the result of any revisions that may be made to any forward-looking statements to reflect events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events.

3

	TABLE OF CONTENTS
PART I. FINANCIAL INFORMATION
ITEM 1.	FINANCIAL STATEMENTS
	CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - SEPTEMBER 30, 2014 AND DECEMBER 31, 2013	5
	CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL (UNAUDITED) - NINE MONTHS ENDED SEPTEMBER 30, 2014 AND 2013	6
	CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (UNAUDITED) - THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2014 AND 2013	7
	CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - NINE MONTHS ENDED SEPTEMBER 30, 2014 AND 2013	8
	NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)	10
ITEM 2.	MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	38
ITEM 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	76
ITEM 4.	CONTROLS AND PROCEDURES	79
PART II. OTHER INFORMATION
ITEM 1.	LEGAL PROCEEDINGS	79
ITEM 1A.	RISK FACTORS	79
ITEM 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	79
ITEM 6.	EXHIBITS	80
SIGNATURE		81

4

ProAssurance Corporation and Subsidiaries

Condensed Consolidated Balance Sheets (Unaudited)

(In thousands, except share data)

	September 30, 2014			December 31, 2013
Assets
Investments
Fixed maturities, available for sale, at fair value; amortized cost, $3,143,726 and $3,026,256, respectively	$	3,246,820		$	3,118,049
Equity securities, trading, at fair value; cost, $274,324 and $203,308, respectively	306,631			253,541
Short-term investments	94,973			248,605
Business owned life insurance	55,918			54,374
Investment in unconsolidated subsidiaries	254,962			214,236
Other investments, $30,058 at fair value at September 30, 2014, otherwise at cost or amortized cost	92,010			52,240
Total Investments	4,051,314			3,941,045
Cash and cash equivalents	248,005			129,383
Restricted cash	—			78,000
Premiums receivable	229,798			115,403
Receivable from reinsurers on paid losses and loss adjustment expenses	9,918			3,231
Receivable from reinsurers on unpaid losses and loss adjustment expenses	251,605			247,518
Prepaid reinsurance premiums	36,286			21,449
Deferred policy acquisition costs	44,049			28,207
Deferred tax asset	—			1,757
Real estate, net	40,116			41,010
Intangible assets	103,224			52,002
Goodwill	210,725			161,115
Other assets	100,957			329,979
Total Assets	$	5,325,997		$	5,150,099
Liabilities and Shareholders’ Equity
Liabilities
Policy liabilities and accruals
Reserve for losses and loss adjustment expenses	$	2,146,018		$	2,072,822
Unearned premiums	391,296			255,463
Reinsurance premiums payable	32,314			34,321
Total Policy Liabilities	2,569,628			2,362,606
Deferred tax liability	21,062			—
Other liabilities	164,095			143,079
Long-term debt	250,000			250,000
Total Liabilities	3,004,785			2,755,685
Shareholders’ Equity
Common shares, par value $0.01 per share, 100,000,000 shares authorized, 62,283,426 and 62,096,787 shares issued, respectively	623			621
Additional paid-in capital	357,779			349,894
Accumulated other comprehensive income (loss), net of deferred tax expense (benefit) of $35,591 and $32,127, respectively	67,007			59,661
Retained earnings	2,094,181			2,015,603
Treasury shares, at cost, 4,596,000 shares and 900,281 shares, respectively	(198,378		)	(31,365		)
Total Shareholders’ Equity	2,321,212			2,394,414
Total Liabilities and Shareholders’ Equity	$	5,325,997		$	5,150,099

See accompanying notes.

5

ProAssurance Corporation and Subsidiaries

Condensed Consolidated Statements of Changes in Capital (Unaudited)

(In thousands)

	Common Stock		Additional Paid-in Capital			Accumulated Other Comprehensive Income (Loss)			Retained Earnings			Treasury Stock			Total
Balance at December 31, 2013	$	621	$	349,894		$	59,661		$	2,015,603		$	(31,365	)	$	2,394,414
Common shares reacquired	—		—			—			—			(167,242		)	(167,242		)
Common shares issued for compensation	—		2,679			—			—			229			2,908
Share-based compensation	—		8,022			—			—			—			8,022
Net effect of restricted and performance shares issued and stock options exercised	2		(2,816		)	—			—			—			(2,814		)
Dividends to shareholders	—		—			—			(52,873		)	—			(52,873		)
Other comprehensive income (loss)	—		—			7,346			—			—			7,346
Net income	—		—			—			131,451			—			131,451
Balance at September 30, 2014	$	623	$	357,779		$	67,007		$	2,094,181		$	(198,378	)	$	2,321,212
	Common Stock		Additional Paid-in Capital			Accumulated Other Comprehensive Income (Loss)			Retained Earnings			Treasury Stock			Total
Balance at December 31, 2012	$	619	$	341,780		$	145,380		$	1,782,857		$	(56	)	$	2,270,580
Common shares reacquired	—		—			—			—			(7,964		)	(7,964		)
Common shares issued for compensation	—		2,807			—			—			—			2,807
Share-based compensation	—		6,930			—			—			—			6,930
Net effect of restricted and performance shares issued and stock options exercised	2		(3,970		)	—			—			—			(3,968		)
Dividends to shareholders	—		—			—			(46,375		)	—			(46,375		)
Other comprehensive income (loss)	—		—			(75,307		)	—			—			(75,307		)
Net income	—		—			—			226,658			—			226,658
Balance at September 30, 2013	$	621	$	347,547		$	70,073		$	1,963,140		$	(8,020	)	$	2,373,361

See accompanying notes.

6

ProAssurance Corporation and Subsidiaries

Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited)

(In thousands, except per share data)

	Three Months Ended September 30						Nine Months Ended September 30
	2014			2013			2014			2013
Revenues
Net premiums earned	$	177,028		$	133,598		$	525,061		$	398,528
Net investment income	32,830			33,889			92,788			99,282
Equity in earnings (loss) of unconsolidated subsidiaries	298			(305		)	2,767			(3,500		)
Net realized investment gains (losses):
Other-than-temporary impairment (OTTI) losses	(1,425		)	—			(1,475		)	(71		)
Portion of OTTI losses recognized in (reclassified from) other comprehensive income before taxes	268			—			268			—
Net impairment losses recognized in earnings	(1,157		)	—			(1,207		)	(71		)
Other net realized investment gains (losses)	(6,974		)	12,500			8,866			47,721
Total net realized investment gains (losses)	(8,131		)	12,500			7,659			47,650
Other income	1,808			1,804			6,055			5,305
Total revenues	203,833			181,486			634,330			547,265
Expenses
Losses and loss adjustment expenses	106,486			65,619			306,591			203,885
Reinsurance recoveries	(7,264		)	(3,982		)	(18,948		)	(14,013		)
Net losses and loss adjustment expenses	99,222			61,637			287,643			189,872
Underwriting, policy acquisition and operating expenses	54,185			33,348			158,856			105,592
Segregated portfolio cells dividend expense	(483		)	—			2,355			—
Interest expense	3,606			322			10,697			1,085
Total expenses	156,530			95,307			459,551			296,549
Gain on acquisition	—			494			—			35,986
Income before income taxes	47,303			86,673			174,779			286,702
Provision for income taxes
Current expense (benefit)	15,591			12,687			37,884			36,902
Deferred expense (benefit)	(3,066		)	10,629			5,444			23,142
Total income tax expense (benefit)	12,525			23,316			43,328			60,044
Net income	34,778			63,357			131,451			226,658
Other comprehensive income (loss), after tax, net of reclassification adjustments	(14,646		)	(4,989		)	7,346			(75,307		)
Comprehensive income	$	20,132		$	58,368		$	138,797		$	151,351
Earnings per share:
Basic	$	0.59		$	1.02		$	2.20		$	3.67
Diluted	$	0.59		$	1.02		$	2.19		$	3.65
Weighted average number of common shares outstanding:
Basic	58,676			61,844			59,807			61,793
Diluted	58,931			62,108			60,047			62,040
Cash dividends declared per common share	$	0.30		$	0.25		$	0.90		$	0.75

See accompanying notes.

7

ProAssurance Corporation and Subsidiaries

Condensed Consolidated Statements of Cash Flows (Unaudited)

(In thousands)

	Nine Months Ended September 30
	2014			2013
Operating Activities
Net income	$	131,451		$	226,658
Adjustments to reconcile income to net cash provided by operating activities:
Depreciation and amortization, net of accretion	36,286			34,364
Gain on acquisition	—			(35,986		)
Net realized investment gains	(7,659		)	(47,650		)
Share-based compensation	8,022			6,930
Deferred income taxes	5,444			23,142
Policy acquisition costs, net amortization (net deferral)	(5,249		)	(7,066		)
Other	(5,980		)	(8,367		)
Other changes in assets and liabilities, excluding effect of business combinations:
Premiums receivable	(42,406		)	(21,881		)
Reinsurance related assets and liabilities	(19,829		)	(1,510		)
Other assets	33,823			(34,016		)
Reserve for losses and loss adjustment expenses	(78,558		)	(104,387		)
Unearned premiums	55,565			23,574
Other liabilities	(9,827		)	(29,844		)
Net cash provided (used) by operating activities	101,083			23,961
Investing Activities
Purchases of:
Fixed maturities, available for sale	(511,894		)	(406,152		)
Equity securities, trading	(85,986		)	(73,292		)
Other investments	(25,109		)	(7,926		)
Funding of tax credit limited partnerships	(8,439		)	(58,801		)
Investment in unconsolidated subsidiaries	(30,394		)	(15,637		)
Proceeds from sales or maturities of:
Fixed maturities, available for sale	486,702			782,612
Equity securities, trading	102,765			95,658
Other investments	15,074			2,352
Distributions from unconsolidated subsidiaries	3,850			14,564
Net sales or maturities (purchases) of short-term investments	177,013			(43,434		)
Cash received in acquisitions	35,013			22,780
Unsettled security transactions, net	(127		)	(2,744		)
(Increase) decrease in restricted cash	78,000			—
Other	3,467			(8,253		)
Net cash provided (used) by investing activities	239,935			301,727
Continued on following page.

8

	Nine Months Ended September 30
	2014			2013
Financing Activities
Repayment of long-term debt	—			(125,000		)
Repurchase of common stock	(163,146		)	(1,990		)
Dividends to shareholders	(53,820		)	(30,842		)
Other	(5,430		)	(7,356		)
Net cash provided (used) by financing activities	(222,396		)	(165,188		)
Increase (decrease) in cash and cash equivalents	118,622			160,500
Cash and cash equivalents at beginning of period	129,383			118,551
Cash and cash equivalents at end of period	$	248,005		$	279,051
Significant non-cash transactions
Deposit transferred as consideration for acquisition	$	205,244		$	153,700

See accompanying notes.

9

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

1. Basis of Presentation

The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of ProAssurance Corporation and its consolidated subsidiaries (ProAssurance, PRA or the Company). The financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation, consisting of normal recurring adjustments, have been included. ProAssurance’s results for the three- and nine-month periods ended September 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014. The accompanying Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes contained in ProAssurance’s December 31, 2013 report on Form 10-K. In connection with its preparation of the Condensed Consolidated Financial Statements, ProAssurance evaluated events that occurred subsequent to September 30, 2014 for recognition or disclosure in its financial statements and notes to financial statements.

ProAssurance operates in four reportable segments as follows: Specialty Property and Casualty (Specialty P&C), Workers' Compensation, Lloyd's Syndicate, and Corporate. For more information on the nature of products and services provided and for financial information by segment, refer to Note 13 of the Notes to Condensed Consolidated Financial Statements.

Reclassifications

On January 1, 2014, ProAssurance began reporting unearned ceding commissions as an offset to deferred policy acquisition costs (DPAC) on the Condensed Consolidated Balance Sheet, and the December 31, 2013 Condensed Consolidated Balance Sheet has been conformed to the current presentation. Previously, unearned ceding commissions ($0.8 million at December 31, 2013) were reported in Unearned premiums. Also, ceding commission income earned for the three and nine months endedSeptember 30, 2014 and 2013 has been reported as an offset to DPAC amortization (see Note 6) which lowered DPAC amortization as previously reported for the three and nine months endedSeptember 30, 2013 by $1.5 million and $4.2 million, respectively. Total underwriting, policy acquisition and operating expense for the 2013 three- and nine-month periods was not affected by the change in presentation.

Intangible Assets

Intangible assets with definite lives are amortized over the estimated useful life of the asset. Amortizable intangible assets primarily consist of agency and policyholder relationships, renewal rights and trade names and had a carrying value of $77.5 million at September 30, 2014 and $35.2 million at December 31, 2013. Intangible assets with an indefinite life, primarily state licenses, are not amortized and had carrying values of $25.8 million at September 30, 2014 and $16.8 million at December 31, 2013. Both amortizable and non-amortizable intangible assets increased during 2014 due to intangible assets purchased in the Eastern acquisition, see Note 2. Intangible assets are evaluated for impairment on an annual basis.

Amortization expense for intangible assets for the three and nine months endedSeptember 30, 2014 was $2.6 million and $7.7 million, respectively, and was $1.3 million and $4.0 million for the three and nine months endedSeptember 30, 2013, respectively. Aggregate amortization expense for intangible assets over the next five years is estimated to be $2.6 million for the remainder of 2014, $8.3 million for 2015, $8.0 million for 2016, $5.7 million for 2017 and $5.3 million for 2018.

Other Assets and Other Liabilities

At December 31, 2013, Other assets was principally comprised of a deposit with an intermediate third-party of $205 million, related to the completion of the Eastern Insurance Holdings, Inc. (Eastern) acquisition which closed on January 1, 2014. See Note 2.

At September 30, 2014, Other liabilities included $16.5 million in segregated portfolio cell (SPC) dividends payable related to our recently acquired Workers' Compensation segment. The SPC dividend payable represents the cumulative undistributed earnings of segregated portfolio cells that are contractually payable to external preferred shareholders of the cells.

10

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Accounting Policy Additions

The significant accounting policies adopted as a result of the acquisition of Eastern and commencement of our Lloyd's Syndicate operations effective January 1, 2014 and followed by ProAssurance in making estimates that materially affect financial reporting are as follows:

Earned But Unbilled Premiums (EBUB)

Workers’ compensation premiums are determined based upon the payroll of the insured, the applicable premium rates and, where applicable, an experience based modification factor. An audit of the policyholders’ records is conducted after policy expiration to make a final determination of applicable premiums. Audit premium due from or due to a policyholder as a result of an audit is reflected in net premiums earned when billed. ProAssurance tracks, by policy, the amount of additional premium billed in final audit invoices as a percentage of payroll exposure and uses this information to estimate the probable additional amount that it has earned, but not yet billed, as of the balance sheet date. Changes to the EBUB estimate are included in Net premiums earned in the period recognized. As of September 30, 2014, ProAssurance carried earned but unbilled premiums of $3.4 million as a part of Premiums receivable.

Convertible Bond Securities

Investments in convertible bond securities are carried at fair value as permitted by the accounting guidance for hybrid financial instruments, with changes in fair value recognized in income as a component of Net realized investment gains (losses) during the period of change. Interest on convertible bond securities is recorded on an accrual basis based on contractual interest rates and is included in Net investment income.

Foreign Currency

The functional currency of all ProAssurance foreign subsidiaries is the U.S. Dollar.

Accounting Changes Not Yet Adopted

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity

Effective for fiscal years beginning after December 15, 2014, the Financial Accounting Standards Board (FASB) issued guidance which changes the requirements for reporting discontinued operations. Under the new guidance, reporting entities are required to report disposals of business components only if the disposal represents a strategic shift in the entity’s operations that will have a major effect on the entity’s operations and financial results. The new guidance expands disclosure requirements for reported discontinued operations and requires disclosure of pre-tax profit or loss attributable to significant disposals that are not reported as discontinued operations. ProAssurance plans to adopt the guidance beginning January 1, 2015. Adoption of the guidance is expected to have no effect on ProAssurance’s results of operations or financial position.

Equity Method and Joint Ventures-Accounting for Investments in Qualified Affordable Housing Projects

Effective for fiscal years beginning after December 15, 2014, the FASB issued guidance which permits but does not require qualified reporting entities to use a new accounting method, the proportional amortization method, for investments in qualified affordable housing projects, also referred to as low income housing projects. Under the new method the initial cost of an investment is amortized in proportion to the tax benefits received, and investment performance is recognized as a component of income tax expense (benefit) rather than as a component of investment income. ProAssurance is in the process of evaluating whether it meets the qualification requirements for using the new method and the effect that the use of the new method would have on its results of operations and financial position. If ProAssurance elects to adopt the new method, the adoption will occur beginning January 1, 2015.

11

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period

Effective for fiscal years beginning after December 15, 2015, the FASB issued guidance for share-based payments in which the terms of the award provide that a performance target can be achieved after completion of the requisite service period. The new guidance provides that compensation cost for such awards should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. ProAssurance plans to adopt the guidance beginning January 1, 2016. Adoption of the guidance is expected to have no effect on ProAssurance’s results of operations or financial position as ProAssurance has no awards with performance targets extending beyond the requisite service period.

Revenue from Contracts with Customers

Effective for fiscal years beginning after December 15, 2016, the FASB issued guidance related to revenue from contracts with customers. The core principle of the new guidance is that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ProAssurance plans to adopt the guidance beginning January 1, 2017. As the majority of ProAssurance's revenues come from insurance contracts which fall under the scope of other FASB standards, adoption of the guidance is expected to have no material effect on ProAssurance’s results of operations or financial position.

Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern

Effective for fiscal years ending after December 15, 2016 and interim periods beginning after December 15, 2016, the FASB issued guidance that establishes principles and definitions related to management's evaluation of whether there is substantial doubt about the organization's ability to continue as a going concern. For each interim and annual reporting period, the new guidance requires management to evaluate the organization's ability to meet its obligations as they are due within one year of the date the financial statements are issued and requires disclosure when there is substantial doubt regarding the organization's ability to continue as a going concern. ProAssurance plans to adopt the guidance beginning December 15, 2016. Adoption is expected to have no effect on ProAssurance’s results of operations or financial position.

Accounting Changes Adopted

Obligations Resulting from Joint and Several Liability Arrangements

Effective for fiscal years beginning after December 15, 2013, the FASB revised guidance related to obligations resulting from joint and several liability arrangements. The new guidance requires an entity to recognize, measure and disclose obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, except for obligations already addressed within existing GAAP guidance, with retrospective application required for such arrangements existing at the beginning of the fiscal year of adoption. ProAssurance adopted the guidance on January 1, 2014. Adoption of this guidance had no effect on ProAssurance's results of operations or financial position.

Presentation of Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists

Effective for fiscal years beginning after December 15, 2013, the FASB issued guidance related to the financial statement presentation of unrecognized tax benefits. The new guidance requires an entity to present unrecognized tax benefits as a reduction to a deferred tax asset resulting from a net operating loss carryforward, a similar tax loss, or tax credit carryforward except in circumstances where the relevant taxing authority does not permit offset or does not require offset and the entity does not intend to use the deferred tax asset for offset. The guidance requires prospective application for all unrecognized tax benefits that exist as of the effective date, but may be applied retrospectively. ProAssurance adopted the guidance prospectively on January 1, 2014. Adoption of this guidance had no material effect on ProAssurance's results of operations or financial position.

12

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

2. Business Combinations

All entities acquired in 2014 were accounted for in accordance with GAAP relating to business combinations.

On January 1, 2014, ProAssurance completed the acquisition of Eastern by purchasing 100% of its outstanding common shares for cash of $205 million. Eastern is based in Lancaster, Pennsylvania and specializes in workers' compensation insurance and reinsurance products and services, including alternative market solutions. ProAssurance incurred expenses related to the purchase of approximately $2.1 million during the first nine months of 2014 and approximately $0.9 million during the year ended December 31, 2013. These expenses were included as a part of operating expenses in the periods incurred.

The purchase consideration for Eastern was allocated to the assets acquired and liabilities assumed based on their estimated fair values on the acquisition date. Goodwill of $49.6 million was recognized equal to the excess of the purchase price over the net fair value of identifiable assets acquired and liabilities assumed. Factors contributing to the recognition of goodwill include strategic and synergistic benefits that are expected to be realized as a result of the acquisition. These benefits include insurance market diversification, expanded access to alternative markets, and opportunities to reach additional insureds in the healthcare market by being a single source provider of a suite of insurance products. None of the goodwill is expected to be tax deductible. The allocation of purchase consideration is shown in the table below.

(In thousands)
Fixed maturities, available for sale	$	107,131
Equity securities, trading	65,945
Cash and short-term investments	58,944
Other investments	42,133
Premiums receivable	71,989
Receivable from reinsurers on paid and unpaid losses and LAE	18,942
Intangible assets	59,000
Deferred policy acquisition costs (see discussion below)	10,593
Other assets	19,225
Reserve for losses and loss adjustment expenses	(153,191		)
Unearned premiums	(80,268		)
Ceded balances payable	(9,507		)
Segregated portfolio cells dividends payable	(14,430		)
Deferred tax liabilities, net	(12,835		)
Other liabilities	(28,038		)
Fair value of net assets acquired	$	155,633
Goodwill	49,610
Total purchase consideration	$	205,243

Intangible assets acquired included the following:

(In millions)	Estimated Fair Value on Acquisition Date	Estimated Useful Life
Agency relationships	$27.0	15
Policyholder relationships	8.0	15
Trade names	8.0	15
Non-compete agreements	7.0	3
Total intangibles subject to amortization	$50.0	13	*
Insurance license agreements	$9.0	Indefinite

* Reflects the weighted average estimated useful life of acquired intangible assets that are subject to amortization.

ProAssurance's fair value estimate of the value of business acquired (VOBA), calculated as the present value of future earnings expected from the insurance contracts acquired, approximated the carrying value of Eastern's asset for deferred policy acquisition costs as of the acquisition date. Consequently, Eastern's asset for deferred policy acquisition costs was recognized in the purchase price allocation, as listed above, in lieu of recognizing an intangible asset for VOBA.

13

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

ProAssurance believes that all contractual cash flows related to acquired receivables will be collected. The fair value of the reserve for losses and loss adjustment expenses and related reinsurance recoverables was based on three components: an actuarial estimate of the expected future net cash flows, a reduction to those cash flows for the time value of money determined utilizing the U.S. Treasury Yield Curve, and a risk margin adjustment to reflect the net present value of profit that an investor would demand in return for the assumption of the development risk associated with the reserve. The fair value of the reserve, including the risk margin adjustment, exceeded the undiscounted loss reserve previously established by Eastern by $9.3 million; this fair value adjustment is being amortized over the average expected life of the reserve of 6 years as a reduction to loss expenses.

The following table provides Pro Forma Consolidated Results for the three and nine months endedSeptember 30, 2014 and 2013 as if the Eastern transaction had occurred on January 1, 2013. ProAssurance Actual Consolidated Results have been adjusted by the following, net of related tax effects, to reflect the Pro Forma Consolidated Results below.

• For the three and nine months endedSeptember 30, 2013, ProAssurance 2013 Actual Consolidated Results, which did not include Eastern, have been adjusted to include Eastern's 2013 operating results. ProAssurance Actual Consolidated Results for the three and nine months endedSeptember 30, 2014 included Eastern's operating results (Revenue of $49.6 million and $149.9 million, respectively, and Net income of $1.7 million and $7.1 million, respectively).

• Certain costs included in ProAssurance actual results for the three and nine months endedSeptember 30, 2014 have been reported in the Pro Forma Consolidated Results as if the costs had been incurred for the three and nine months endedSeptember 30, 2013. Such costs include direct transaction costs and certain compensation costs directly related to the integration of Eastern operations.

• Actual Consolidated Results for the three and nine months endedSeptember 30, 2013, were reduced to reflect amortization of intangible assets and debt security premiums and discounts recorded as a part of the Eastern purchase price allocation.

	Three Months Ended September 30, 2014		Nine Months Ended September 30, 2014
(In thousands)	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results
Revenue	$203,833	$203,833	$634,330	$634,330
Net income	$34,759	$34,778	$132,451	$131,451
	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
(In thousands)	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results
Revenue	$229,608	$181,486	$686,391	$547,265
Net income	$66,868	$63,357	$233,666	$226,658

14

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

3. Fair Value Measurement

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three level hierarchy has been established for valuing assets and liabilities based on how transparent (observable) the inputs are that are used to determine fair value, with the inputs considered most observable categorized as Level 1 and those that are the least observable categorized as Level 3. Hierarchy levels are defined as follows:

Level 1: quoted (unadjusted) market prices in active markets for identical assets and liabilities. For ProAssurance, Level 1 inputs are generally quotes for debt or equity securities actively traded in exchange or over-the-counter markets.

Level 2: market data obtained from sources independent of the reporting entity (observable inputs). For ProAssurance, Level 2 inputs generally include quoted prices in markets that are not active, quoted prices for similar assets or liabilities, and results from pricing models that use observable inputs such as interest rates and yield curves that are generally available at commonly quoted intervals.

Level 3: the reporting entity’s own assumptions about market participant assumptions based on the best information available in the circumstances (non-observable inputs). For ProAssurance, Level 3 inputs are used in situations where little or no Level 1 or 2 inputs are available or are inappropriate given the particular circumstances. Level 3 inputs include results from pricing models for which some or all of the inputs are not observable, discounted cash flow methodologies, single non-binding broker quotes and adjustments to externally quoted prices that are based on management judgment or estimation.

Fair values of assets measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013, including financial instruments for which ProAssurance has elected fair value, are shown in the following tables. The tables also indicate the fair value hierarchy of the valuation techniques utilized to determine those fair values. For some assets, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. When this is the case, the asset is categorized based on the level of the most significant input to the fair value measurement. Assessments of the significance of a particular input to the fair value measurement require judgment and consideration of factors specific to the assets being valued.

15

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

	September 30, 2014
	Fair Value Measurements Using						Total
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Assets:
Fixed maturities, available for sale
U.S. Treasury obligations	$	—	$	176,813	$	—	$	176,813
U.S. Government-sponsored enterprise obligations	—		43,966		—		43,966
State and municipal bonds	—		1,082,040		5,594		1,087,634
Corporate debt, multiple observable inputs	—		1,459,550		—		1,459,550
Corporate debt, limited observable inputs:
Other corporate debt, NRSRO ratings available	—		—		10,793		10,793
Other corporate debt, NRSRO ratings not available	—		—		2,642		2,642
Residential mortgage-backed securities	—		290,314		—		290,314
Agency commercial mortgage-backed securities	—		16,893		—		16,893
Other commercial mortgage-backed securities	—		57,323		—		57,323
Other asset-backed securities	—		96,119		4,773		100,892
Equity securities
Financial	75,141		—		—		75,141
Utilities/Energy	26,551		—		—		26,551
Consumer oriented	64,912		—		—		64,912
Industrial	54,912		—		—		54,912
Bond funds	53,178		—		—		53,178
All other	31,937		—		—		31,937
Short-term investments	94,323		650		—		94,973
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	—		—		110,793		110,793
Other investments	4,830		25,228		—		30,058
Total assets	$	405,784	$	3,248,896	$	134,595	$	3,789,275

16

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

	December 31, 2013
	Fair Value Measurements Using						Total
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Assets:
Fixed maturities, available for sale
U.S. Treasury obligations	$	—	$	170,714	$	—	$	170,714
U.S. Government-sponsored enterprise obligations	—		32,768		—		32,768
State and municipal bonds	—		1,147,328		7,338		1,154,666
Corporate debt, multiple observable inputs	—		1,346,977		—		1,346,977
Corporate debt, limited observable inputs:
Other corporate debt, NRSRO ratings available	—		—		11,449		11,449
Other corporate debt, NRSRO ratings not available	—		—		2,727		2,727
Residential mortgage-backed securities	—		235,614		—		235,614
Agency commercial mortgage-backed securities	—		27,475		—		27,475
Other commercial mortgage-backed securities	—		61,390		—		61,390
Other asset-backed securities	—		67,455		6,814		74,269
Equity securities
Financial	81,536		—		—		81,536
Utilities/Energy	32,350		—		—		32,350
Consumer oriented	66,461		—		—		66,461
Industrial	57,262		—		—		57,262
All other	15,932		—		—		15,932
Short-term investments	248,605						248,605
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	—		—		72,062		72,062
Total assets	$	502,146	$	3,089,721	$	100,390	$	3,692,257

The fair values for securities included in the Level 2 category, with the few exceptions described below, were developed by one of several third party, nationally recognized pricing services, including services that price only certain types of securities. Each service uses complex methodologies to determine values for securities and subject the values they develop to quality control reviews. Management selected a primary source for each type of security in the portfolio, and reviewed the values provided for reasonableness by comparing data to alternate pricing services and to available market and trade data. Values that appeared inconsistent were further reviewed for appropriateness. If a value did not appear reasonable, the valuation was discussed with the service that provided the value and would have been adjusted, if necessary. No such adjustments were necessary in 2014 or 2013.

Level 2 Valuations

Below is a summary description of the valuation methodologies primarily used by the pricing services for securities in the Level 2 category, by security type:

U.S. Treasury obligations were valued based on quoted prices for identical assets, or, in markets that are not active, quotes for similar assets, taking into consideration adjustments for variations in contractual cash flows and yields to maturity.

U.S. Government-sponsored enterprise obligations were valued using pricing models that consider current and historical market data, normal trading conventions, credit ratings, and the particular structure and characteristics of the security being valued, such as yield to maturity, redemption options, and contractual cash flows. Adjustments to model inputs or model results were included in the valuation process when necessary to reflect recent regulatory, government or corporate actions or significant economic, industry or geographic events affecting the security’s fair value.

State and municipal bonds were valued using a series of matrices that considered credit ratings, the structure of the security, the sector in which the security falls, yields, and contractual cash flows. Valuations were further adjusted, when necessary, to reflect recent significant economic or geographic events or ratings changes affecting the security’s fair value.

17

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Corporate debt with multiple observable inputs consisted primarily of corporate bonds, but also included a small number of bank loans. The methodology used to value Level 2 corporate bonds was the same as the methodology previously described for U.S. Government-sponsored enterprise obligations. Bank loans were valued by an outside vendor based upon a widely distributed, loan-specific listing of average bid and ask prices published daily by an investment industry group. The publisher of the listing derived the averages from data received from multiple market-makers for bank loans.

Residential and commercial mortgage backed securities. Agency pass-through securities were valued using a matrix, considering the issuer type, coupon rate and longest cash flows outstanding. The matrix was developed daily based on available market information. Agency and non-agency collateralized mortgage obligations were both valued using models that consider the structure of the security, current and historical information regarding prepayment speeds, ratings and ratings updates, and current and historical interest rate and interest rate spread data. Valuations of Alt-A mortgages included a review of collateral performance data, which is generally updated monthly.

Other asset-backed securities were valued using models that consider the structure of the security, monthly payment information, current and historical information regarding prepayment speeds, ratings and ratings updates, and current and historical interest rate and interest rate spread data. Spreads and prepayment speeds considered collateral type. Valuations of subprime home equity loans used the same valuation methodology as previously described for Alt-A mortgages.

Short-term investments are securities maturing within one year, carried at cost which approximated the fair value of the security due to the short term to maturity.

Other investments consisted primarily of convertible bond securities. Convertible bonds were valued using a pricing model that incorporated selected dealer quotes as well as real-time market data including equity prices and risk free rates. If dealer quotes were unavailable for the security being valued, quotes for securities with similar terms and credit status were used in the pricing model. Dealer quotes selected for use were those considered most accurate based on parameters such as underwriter status and historical reliability.

Level 3 Valuations

Below is a summary description of the valuation processes and methodologies used as well as quantitative information regarding securities in the Level 3 category.

Level 3 Valuation Processes

• Level 3 securities are priced by the Chief Investment Officer.

• Level 3 valuations are computed quarterly. Prices are evaluated quarterly against prior period prices and the expected change in price.

• Exclusive of Investments in unconsolidated subsidiaries, which are valued at net asset value (NAV), the securities noted in the disclosure are primarily NRSRO rated debt instruments for which comparable market inputs are commonly available for evaluating the securities in question. Valuation of these debt instruments is not overly sensitive to changes in the unobservable inputs used.

Level 3 Valuation Methodologies

State and municipal bonds consisted of auction rate municipal bonds valued internally using either published quotes for similar securities or values produced by discounted cash flow models using yields currently available on fixed rate securities with a similar term and collateral, adjusted to consider the effect of a floating rate and a premium for illiquidity. At September 30, 2014, 100% of the securities were rated; the average rating was A.

Corporate debt with limited observable inputs consisted of corporate bonds valued using dealer quotes for similar securities or discounted cash flow models using yields currently available for similar securities. Similar securities are defined as securities having like terms and payment features that are of comparable credit quality. Assessments of credit quality were based on NRSRO ratings, if available, or were subjectively determined by management if not available. At September 30, 2014, the average rating of rated securities was A-.

Other asset-backed securities consisted of securitizations of receivables valued using dealer quotes for similar securities or discounted cash flow models using yields currently available for similar securities.

18

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Investment in unconsolidated subsidiaries consisted of limited partnership (LP) and limited liability company (LLC) interests valued using the NAV provided by the LP/LLC, which approximated the fair value of the interest.

Such interests include the following:

	Unfunded Commitments	Fair Value
(In thousands)	September 30, 2014	September 30, 2014		December 31, 2013
Investments in LPs/LLCs:
Secured debt fund (1)	$16,200	$	23,896	$	13,233
Long equity fund (2)	None	7,034		6,574
Long/Short equity funds (3)	None	25,016		28,385
Non-public equity funds (4)	$71,518	42,818		23,870
Multi-strategy fund of funds (5)	None	8,263		—
Structured credit fund (6)	None	3,766		—
		$	110,793	$	72,062

(1) The LP is structured to provide income and capital appreciation primarily through investments in senior secured debt. Redemptions are not allowed. Income and capital are to be periodically distributed at the discretion of the LP over an anticipated time frame that spans from 7 to 9 years.

(2) The LP holds long equities of public international companies. Redemptions are allowed at the end of any calendar month with a prior notice requirement of 15 days and are paid within 10 days of the end of the calendar month of the redemption request.

(3) Comprised of interests in multiple unrelated LP funds. The funds hold primarily long and short North American equities, and target absolute returns using strategies designed to take advantage of event-driven market opportunities. The funds generally permit quarterly or semi-annual redemptions of the investors’ existing capital balance with notice requirements of 30 to 90 days. For some funds, redemptions above specified thresholds (lowest threshold is 90%) may be only partially payable until after a fund audit is completed and are then payable within 30 days.

(4) Comprised of interests in three unrelated LP funds, each structured to provide capital appreciation through diversified investments in private equity, which can include investments in buyout, venture capital, mezzanine debt, distressed debt and other private equity-oriented LPs. One LP allows redemption by special consent; the others do not permit redemption. Income and capital are to be periodically distributed at the discretion of the LP over time frames that are anticipated to span from 4 to 12 years.

(5) The LLC is structured to build and manage low volatility, multi-manager portfolios that have little or no correlation to the broader fixed income and equity security markets. Redemptions are not permitted but the LLC Board is permitted discretion to periodically extend offers to repurchase units of the LLC.

(6) The LP seeks to obtain superior risk-adjusted absolute returns by acquiring and actively managing a diversified portfolio of debt securities, including bonds, loans and other asset-backed instruments. Redemptions are allowed at any quarter-end with a prior notice requirement of 90 days.

ProAssurance may not sell, transfer or assign its interest in any of the above LPs/LLCs without special consent from the LPs/LLCs.

19

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Quantitative Information Regarding Level 3 Valuations

Quantitative Information about Level 3 Fair Value Measurements
	Fair Value at
(In millions)	September 30, 2014	December 31, 2013	Valuation Technique	Unobservable Input	Range (Weighted Average)
Assets:
State and municipal bonds	$5.6	$7.3	Market Comparable Securities	Comparability Adjustment	0% - 10% (5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 10% (5%)
Corporate debt with limited observable inputs	$13.4	$14.2	Market Comparable Securities	Comparability Adjustment	0% - 5% (2.5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 5% (2.5%)
Other asset-backed securities	$4.8	$6.8	Market Comparable Securities	Comparability Adjustment	0% - 5% (2.5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 5% (2.5%)

The significant unobservable inputs used in the fair value measurement of the above listed securities were the valuations of comparable securities with similar issuers, credit quality and maturity. Changes in the availability of comparable securities could result in changes in the fair value measurements.

Fair Value Measurements - Level 3 Assets

The following tables (the Level 3 Tables) present summary information regarding changes in the fair value of assets measured at fair value using Level 3 inputs.

	September 30, 2014
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance June 30, 2014	$	—	$	7,148		$	14,544		$	5,960		$	101,342		$	128,994
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		(4		)	16			—			—			12
Equity in earnings of unconsolidated subsidiaries	—		—			—			—			(683		)	(683		)
Net realized investment gains (losses)	—		—			—			—			—			—
Included in other comprehensive income	—		(76		)	35			(6		)	—			(47		)
Purchases	—		—			(499		)	—			12,055			11,556
Sales	—		(1,474		)	(661		)	—			(1,921		)	(4,056		)
Transfers in	—		—			—			—			—			—
Transfers out	—		—			—			(1,181		)	—			(1,181		)
Balance September 30, 2014	$	—	$	5,594		$	13,435		$	4,773		$	110,793		$	134,595
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—		$	—		$	—		$	(683	)	$	(683	)

20

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

	September 30, 2014
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations			State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance December 31, 2013	$	—		$	7,338		$	14,176		$	6,814		$	72,062		$	100,390
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—			(10		)	48			—			—			38
Equity in earnings of unconsolidated subsidiaries	—			—			—			—			5,413			5,413
Net realized investment gains (losses)	—			(95		)	3			—			—			(92		)
Included in other comprehensive income	1			(34		)	702			63			—			732
Purchases	1,000			1,861			2,000			3,340			37,430			45,631
Sales	—			(1,731		)	(1,469		)	(61		)	(4,112		)	(7,373		)
Transfers in	—			2,119			—			305			—			2,424
Transfers out	(1,001		)	(3,854		)	(2,025		)	(5,688		)	—			(12,568		)
Balance September 30, 2014	$	—		$	5,594		$	13,435		$	4,773		$	110,793		$	134,595
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—		$	—		$	—		$	—		$	5,413		$	5,413

	September 30, 2013
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds		Corporate Debt			Asset-backed Securities		Investment in Unconsolidated Subsidiaries			Total
Balance June 30, 2013	$	—	$	5,025	$	11,359		$	4,679	$	44,549		$	65,612
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		—		(1		)	—		—			(1		)
Equity in earnings of unconsolidated subsidiaries	—		—		—			—		1,301			1,301
Net realized investment gains (losses)	—		—		—			—		—			—
Included in other comprehensive income	—		—		(221		)	16		—			(205		)
Purchases	—		—		—			—		2,354			2,354
Sales	—		—		(503		)	—		(3,548		)	(4,051		)
Transfers in	—		—		100			—		—			100
Transfers out	—		—		—			—		—			—
Balance September 30, 2013	$	—	$	5,025	$	10,734		$	4,695	$	44,656		$	65,110
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—	$	—		$	—	$	1,301		$	1,301

21

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

	September 30, 2013
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance December 31, 2012	$	—	$	7,175		$	15,191		$	4,035		$	33,739		$	60,140
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		—			(103		)	(17		)	—			(120		)
Equity in earnings of unconsolidated subsidiaries	—		—			—			—			3,582			3,582
Net realized investment gains (losses)	—		(44		)	(69		)	—			—			(113		)
Included in other comprehensive income	—		—			(514		)	(81		)	—			(595		)
Purchases	—		—			7,470			1,356			20,975			29,801
Sales	—		(2,106		)	(1,368		)	(18		)	(13,640		)	(17,132		)
Transfers in	—		—			100			1,701			—			1,801
Transfers out	—		—			(9,973		)	(2,281		)	—			(12,254		)
Balance September 30, 2013	$	—	$	5,025		$	10,734		$	4,695		$	44,656		$	65,110
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—		$	—		$	—		$	3,582		$	3,582

Transfers

There were no transfers between the Level 1 and Level 2 categories during the three and nine months endedSeptember 30, 2014 or 2013.

Transfers shown in the preceding Level 3 Tables were as of the end of the period and were to or from Level 2, unless otherwise noted.

All transfers during the three and nine months endedSeptember 30, 2014 and September 30, 2013 related to securities held for which the level of market activity for identical or nearly identical securities varies from period to period. The securities were valued using multiple observable inputs when those inputs were available; otherwise the securities were valued using limited observable inputs.

22

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Financial Instruments - Methodologies Other Than Fair Value

The following table provides the estimated fair value of our financial instruments that, in accordance with GAAP for the type of investment, are measured using a methodology other than fair value. All fair values provided fall within the Level 3 fair value category.

	September 30, 2014				December 31, 2013
(In thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial assets:
BOLI	$	55,918	$	55,918	$	54,374	$	54,374
Other investments	61,952		63,247		52,240		51,833
Other assets	21,298		21,248		17,940		17,940
Financial liabilities:
Senior notes due 2023	$	250,000	$	273,750	$	250,000	$	262,500
Other liabilities	14,022		14,139		13,303		13,303

The fair value of the BOLI was equal to the cash surrender value associated with the policies on the valuation date.

Other investments listed in the table above include interests in certain investment fund LPs/LLCs accounted for using the cost method, investments in Federal Home Loan Bank (FHLB) common stock carried at cost, and an annuity investment carried at amortized cost. The estimated fair value of the LP/LLC interests was based on the NAVs provided by the LP/LLC managers. The estimated fair value of the FHLB common stock was based on the amount ProAssurance would receive if its membership were canceled, as the membership cannot be sold. The fair value of the annuity represents the present value of the expected future cash flows discounted using a rate available in active markets for similarly structured instruments.

Other assets and Other liabilities primarily consisted of related investment assets and liabilities associated with funded deferred compensation agreements. Fair values of the funded deferred compensation assets and liabilities were based on the NAVs of the underlying securities. Other assets also included a secured note receivable and an unsecured receivable under a revolving credit agreement. Fair value of these receivables was based on the present value of expected cash flows from the receivables, discounted at market rates on the valuation date for receivables with similar credit standings and similar payment structures. Other liabilities also included certain contractual liabilities related to prior business combinations. The fair values of the business combination liabilities were based on the present value of the expected future cash outflows, discounted at ProAssurance’s assumed incremental borrowing rate on the valuation date for unsecured liabilities with similar repayment structures.

The fair value of the long-term debt was estimated based on the present value of expected future cash outflows, discounted at rates available on the valuation date for similar debt issued by entities with a similar credit standing to ProAssurance.

23

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

4. Investments

Available-for-sale securities at September 30, 2014 and December 31, 2013 included the following:

	September 30, 2014
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Fixed maturities
U.S. Treasury obligations	$	173,632	$	4,396	$	1,215	$	176,813
U.S. Government-sponsored enterprise obligations	42,480		1,709		223		43,966
State and municipal bonds	1,038,278		50,055		699		1,087,634
Corporate debt	1,433,266		48,894		9,175		1,472,985
Residential mortgage-backed securities	282,717		8,817		1,220		290,314
Agency commercial mortgage-backed securities	16,785		172		64		16,893
Other commercial mortgage-backed securities	55,853		1,587		117		57,323
Other asset-backed securities	100,715		346		169		100,892
	$	3,143,726	$	115,976	$	12,882	$	3,246,820
	December 31, 2013
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Fixed maturities
U.S. Treasury obligations	$	166,115	$	6,118	$	1,519	$	170,714
U.S. Government-sponsored enterprise obligations	30,942		2,251		425		32,768
State and municipal bonds	1,116,060		46,533		7,927		1,154,666
Corporate debt	1,321,838		53,059		13,744		1,361,153
Residential mortgage-backed securities	230,861		7,608		2,855		235,614
Agency commercial mortgage-backed securities	27,268		343		136		27,475
Other commercial mortgage-backed securities	59,066		2,491		167		61,390
Other asset-backed securities	74,106		487		324		74,269
	$	3,026,256	$	118,890	$	27,097	$	3,118,049

24

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

The recorded cost basis and estimated fair value of available-for-sale fixed maturities at September 30, 2014, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(In thousands)	Amortized Cost		Due in one year or less		Due after one year through five years		Due after five years through ten years		Due after ten years		Total Fair Value
Fixed maturities, available for sale
U.S. Treasury obligations	$	173,632	$	19,612	$	104,211	$	48,950	$	4,040	$	176,813
U.S. Government-sponsored enterprise obligations	42,480		8,002		25,465		10,160		339		43,966
State and municipal bonds	1,038,278		49,169		393,569		442,212		202,684		1,087,634
Corporate debt	1,433,266		157,683		694,254		598,183		22,865		1,472,985
Residential mortgage-backed securities	282,717										290,314
Agency commercial mortgage-backed securities	16,785										16,893
Other commercial mortgage-backed securities	55,853										57,323
Other asset-backed securities	100,715										100,892
	$	3,143,726									$	3,246,820

Excluding obligations of the U.S. Government or U.S. Government-sponsored enterprises, no investment in any entity or its affiliates exceeded 10% of shareholders’ equity at September 30, 2014.

Cash and securities with a carrying value of $48.2 million at September 30, 2014 were on deposit with various state insurance departments to meet regulatory requirements.

As a member of Lloyd's and a capital provider to Syndicate 1729, ProAssurance is required to maintain capital at Lloyd's, referred to as Funds at Lloyd's (FAL). ProAssurance investments at September 30, 2014 included fixed maturities with a fair value of $71.5 million and short term investments with a fair value of approximately $5.7 million on deposit with Lloyd's in order to satisfy these FAL requirements.

Business Owned Life Insurance (BOLI)

ProAssurance holds BOLI policies on management employees that are carried at the current cash surrender value of the policies (original cost $33 million). The primary purpose of the program is to offset future employee benefit expenses through earnings on the cash value of the policies. ProAssurance is the owner and principal beneficiary of these policies.

Other Investments

Other investments at September 30, 2014 and December 31, 2013 was comprised as follows:

(In thousands)	September 30, 2014		December 31, 2013
Investments in LPs/LLCs, at cost	$	57,607	$	47,258
Convertible securities, at fair value, see Note 1	30,058		—
Other, principally FHLB capital stock, at cost	4,345		4,982
	$	92,010	$	52,240

FHLB capital stock is not marketable, but may be liquidated by terminating membership in the FHLB. The liquidation process can take up to five years.

25

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Unconsolidated Subsidiaries

ProAssurance holds investments in unconsolidated subsidiaries, accounted for under the equity method. The investments include the following:

	September 30, 2014			Carrying Value
(In thousands)	Unfunded Commitments*	Percentage Ownership		September 30, 2014		December 31, 2013
Investment in LPs/LLCs:
Tax credit partnerships	$15,710	See below		$	137,386	$	142,174
Secured debt fund	$16,200	<	20%	23,896		13,233
Long equity fund	None	<	20%	7,034		6,574
Long/short equity funds	None	<	25%	25,016		28,385
Non-public equity funds	$88,034	<	20%	46,127		23,870
Multi-strategy fund of funds	None	<	20%	8,263		—
Structured credit fund	None	<	20%	3,766		—
Real estate fund	$6,526	<	20%	3,474		—
				$	254,962	$	214,236

* Unfunded commitments are included in the carrying value of tax credit partnerships only.

Tax credit partnership interests held by ProAssurance generate investment returns by providing tax benefits to fund investors in the form of project operating losses and tax credits. The related properties are principally low income housing projects. ProAssurance's ownership percentage relative to two of the tax credit partnership interests is almost 100%; these interests had a carrying value of $60.9 million at September 30, 2014. ProAssurance's ownership percentage relative to the remaining tax credit partnership interests is less than 20%; these interests had a carrying value of $76.5 million at September 30, 2014. All are accounted for under the equity method as ProAssurance does not have the ability to exert control over the partnerships.

The Secured debt fund is structured to provide interest distributions and capital appreciation primarily through investments in senior secured debt.

The Long equity fund targets long-term total returns through holdings in public international companies.

The Long/Short equity fund targets absolute returns using a strategy designed to take advantage of event-driven market opportunities.

The Non-public equity funds hold diversified private equities and are structured to provide capital appreciation.

The Multi-strategy fund of funds holds portfolios having little or no correlation to the broader fixed income and equity security markets.

The Structured credit fund seeks to obtain superior risk-adjusted absolute returns by acquiring and actively managing a diversified portfolio of debt securities.

The Real estate fund invests in multi-tenant industrial real estate with the objective of achieving superior absolute returns in all market cycles.

26

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Investments Held in a Loss Position

The following tables provide summarized information with respect to investments held in an unrealized loss position at September 30, 2014 and December 31, 2013, including the length of time the investment had been held in a continuous unrealized loss position.

	September 30, 2014
	Total				Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(In thousands)	Value		Loss		Value		Loss		Value		Loss
Fixed maturities, available for sale
U.S. Treasury obligations	$	59,770	$	1,215	$	37,309	$	534	$	22,461	$	681
U.S. Government-sponsored enterprise obligations	7,887		223		2,136		22		5,751		201
State and municipal bonds	71,155		699		32,129		128		39,026		571
Corporate debt	477,806		9,175		372,670		5,909		105,136		3,266
Residential mortgage-backed securities	66,143		1,220		26,012		105		40,131		1,115
Agency commercial mortgage-backed securities	10,432		64		8,536		8		1,896		56
Other commercial mortgage-backed securities	14,592		117		7,528		33		7,064		84
Other asset-backed securities	39,328		169		35,269		77		4,059		92
	$	747,113	$	12,882	$	521,589	$	6,816	$	225,524	$	6,066
Other investments
Investments in LPs/LLCs carried at cost	$	17,106	$	582	$	15,458	$	577	$	1,648	$	5

	December 31, 2013
	Total				Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(In thousands)	Value		Loss		Value		Loss		Value		Loss
Fixed maturities, available for sale
U.S. Treasury obligations	$	47,668	$	1,519	$	44,304	$	1,182	$	3,364	$	337
U.S. Government-sponsored enterprise obligations	6,640		425		5,752		321		888		104
State and municipal bonds	203,970		7,927		184,401		6,640		19,569		1,287
Corporate debt	349,277		13,744		324,510		12,061		24,767		1,683
Residential mortgage-backed securities	93,608		2,855		84,045		2,393		9,563		462
Agency commercial mortgage-backed securities	11,658		136		11,082		116		576		20
Other commercial mortgage-backed securities	11,153		167		10,215		159		938		8
Other asset-backed securities	25,539		324		21,804		77		3,735		247
	$	749,513	$	27,097	$	686,113	$	22,949	$	63,400	$	4,148
Other investments
Investments in LPs/LLCs carried at cost	$	14,752	$	1,059	$	13,166	$	1,018	$	1,586	$	41

As of September 30, 2014, excluding U.S. government backed securities, there were 617 debt securities (21.1% of all available-for-sale fixed maturity securities held) in an unrealized loss position representing 441 issuers. The greatest and second greatest unrealized loss position among those securities was approximately $0.5 million and $0.3 million, respectively. The securities were evaluated for impairment as of September 30, 2014.

27

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

As of December 31, 2013, excluding U.S. government backed securities, there were 714 debt securities (26.3% of all available-for-sale fixed maturity securities held) in an unrealized loss position representing 516 issuers. Both the greatest and second greatest unrealized loss position among those securities approximated $0.4 million. The securities were evaluated for impairment as of December 31, 2013.

Each quarter, ProAssurance performs a detailed analysis for the purpose of assessing whether any of the securities it holds in an unrealized loss position have suffered an other-than-temporary impairment in value. A detailed discussion of the factors considered in the assessment is included in Note 1 of the Notes to Consolidated Financial Statements included in ProAssurance's December 31, 2013 Form 10-K.

Fixed maturity securities held in an unrealized loss position at September 30, 2014, excluding asset-backed securities, have paid all scheduled contractual payments and are expected to continue doing so. Expected future cash flows of asset-backed securities held in an unrealized loss position were estimated as part of the September 30, 2014 impairment evaluation using the most recently available six-month historical performance data for the collateral (loans) underlying the security or, if historical data was not available, sector based assumptions, and equaled or exceeded the current amortized cost basis of the security.

Net Investment Income

Net investment income by investment category was as follows:

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Fixed maturities	$	28,442		$	30,672		$	85,402		$	93,687
Equities	2,661			2,394			7,479			7,000
Short-term investments and Other invested assets	2,793			2,000			4,723			2,514
Business owned life insurance	646			633			1,544			1,508
Investment fees and expenses	(1,712		)	(1,810		)	(6,360		)	(5,427		)
Net investment income	$	32,830		$	33,889		$	92,788		$	99,282

28

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Net Realized Investment Gains (Losses)

Realized investment gains and losses are recognized on the specific identification basis. The following table provides detailed information regarding net realized investment gains (losses):

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Total other-than-temporary impairment losses:
State and municipal bonds	$	—		$	—		$	(50	)	$	(71	)
Corporate debt	(1,425		)	—			(1,425		)	—
Portion recognized in (reclassified from) Other Comprehensive Income:
Corporate debt	268			—			268			—
Net impairments recognized in earnings	$	(1,157	)	$	—		$	(1,207	)	$	(71	)
Gross realized gains, available-for-sale securities	736			7,708			3,711			14,631
Gross realized (losses), available-for-sale securities	(52		)	(5,305		)	(371		)	(6,269		)
Net realized gains (losses), trading securities	3,227			5,818			21,830			14,650
Net realized gains (losses), Other investments	55			—			321			—
Change in unrealized holding gains (losses), trading securities	(10,402		)	3,355			(17,906		)	23,784
Change in unrealized holding gains (losses), convertible securities, carried at fair value	(538		)	—			1,281			—
Other	—			924			—			925
Net realized investment gains (losses)	$	(8,131	)	$	12,500		$	7,659		$	47,650

Credit-related impairments related to two corporate debt instruments were recognized in the third quarter of 2014. Additionally, a non-credit impairment related to one of the instruments was recognized as the fair value of the instrument was less than the expected future cash flows from the security. No significant impairment losses were recognized in the 2013three- and nine-month periods.

The following table presents a roll forward of cumulative credit losses recorded in earnings related to impaired debt securities for which a portion of the other-than-temporary impairment was recorded in Other comprehensive income.

	Three Months Ended September 30					Nine Months Ended September 30
(In thousands)	2014		2013			2014		2013
Balance beginning of period	$	83	$	413		$	83	$	3,301
Additional credit losses recognized during the period, related to securities for which:
No OTTI has been previously recognized	149		—			149		—
Reductions due to:
Securities sold during the period (realized)	—		(330		)	—		(3,218		)
Balance September 30	$	232	$	83		$	232	$	83

Other information regarding sales and purchases of available-for-sale securities is as follows:

	Three Months Ended September 30				Nine Months Ended September 30
(In millions)	2014		2013		2014		2013
Proceeds from sales (exclusive of maturities and paydowns)	$	24.8	$	319.2	$	147.3	$	494.8
Purchases	$	146.5	$	98.8	$	511.9	$	406.2

29

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

5. Income Taxes

ProAssurance estimates its annual effective tax rate at the end of each quarterly reporting period and uses this estimated rate to record the provision for income taxes in the interim financial statements. The provision for income taxes is different from that which would be obtained by applying the statutory Federal income tax rate to income before taxes primarily because a portion of ProAssurance’s investment income is tax-exempt, because ProAssurance utilizes tax credit benefits transferred from tax credit partnership investments, and in 2013, because ProAssurance recognized a non-taxable gain related to an acquisition.

In 2013 the IRS issued a Notice of Proposed Adjustment (NOPA) for the 2009 and 2010 tax years. ProAssurance subsequently protested certain issues in the NOPA, all of which related to the timing of deductions. In April 2014, ProAssurance and the IRS reached a final settlement on all contested issues which resulted in no additional tax liability for ProAssurance. ProAssurance subsequently received IRS refunds totaling $30.6 million, exclusive of interest, which included a refund from the settlement of non-contested issues addressed by the NOPA, and return of a protective payment made in 2013.

The statute of limitations is now closed for all tax years prior to 2011.

The liability for unrecognized tax benefits was $0.6 million at September 30, 2014 and $4.8 million at December 31, 2013. All unrecognized benefits included in the December 31, 2013 balance were attributable to timing issues which fully reversed during the first quarter of 2014; an additional $0.6 million was added to the liability in 2014 as a result of the acquisition of Eastern.

ProAssurance had receivables for federal income taxes of $11.4 million at September 30, 2014 and $27.3 million at December 31, 2013, both carried as a part of Other Assets.

6. Deferred Policy Acquisition Costs

Policy acquisition costs that are primarily and directly related to the successful production of new and renewal insurance contracts, most significantly agent commissions, premium taxes, and underwriting salaries and benefits, are capitalized as policy acquisition costs and amortized to expense, net of ceding commissions earned, as the related premium revenues are earned.

Amortization of deferred policy acquisition costs was $16.7 million and $52.9 million for the three and nine months endedSeptember 30, 2014, respectively, and $13.9 million and $39.0 million for the three and nine months endedSeptember 30, 2013, respectively.

7. Reserve for Losses and Loss Adjustment Expenses

The reserve for losses is established based on estimates of individual claims and actuarially determined estimates of future losses based on ProAssurance’s past loss experience, available industry data and projections as to future claims frequency, severity, inflationary trends and settlement patterns. Estimating the reserve, particularly the reserve appropriate for liability exposures, is a complex process. Claims may be resolved over an extended period of time, often five years or more, and may be subject to litigation. Estimating losses requires ProAssurance to make and revise judgments and assessments regarding multiple uncertainties over an extended period of time. As a result, the reserve estimate may vary significantly from the eventual outcome. The assumptions used in establishing ProAssurance’s reserve are regularly reviewed and updated by management as new data becomes available. Changes to estimates of previously established reserves are included in earnings in the period in which the estimate is changed.

During the three and nine months endedSeptember 30, 2014, ProAssurance recognized favorable net loss development of $42.9 million and $133.3 million, respectively, related to prior accident years, of which $0.6 million and $2.9 million, respectively, related to the loss reserve assumed in the acquisition of Eastern. The favorable net loss development reflected reductions in the Company's estimates of claims severity, principally related to the 2007 through 2012 accident years.

For the three and nine months endedSeptember 30, 2013, ProAssurance recognized favorable net loss development of $49.4 million and $141.0 million, respectively, to reflect reductions in estimated claims severity. The favorable net loss development reflected reductions in the Company's estimates of claims severity, principally related to the 2005 through 2011 accident years.

30

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

8. Commitments and Contingencies

ProAssurance is involved in various legal actions related to insurance policies and claims handling including, but not limited to, claims asserted by policyholders. These types of legal actions arise in the Company's ordinary course of business and, in accordance with GAAP for insurance entities, are considered as a part of the Company's loss reserving process, which is described in detail under the heading "Losses and Loss Adjustment Expenses" in the Accounting Policies section in Note 1 of the Notes to Consolidated Financial Statements in ProAssurance's 2013 Form 10-K.

ProAssurance has funding commitments primarily related to non-public investment entities totaling approximately $164.7 million, expected to be paid as follows: $22.6 million in 2014, $124.7 million in 2015 and 2016 combined, $16.5 million in 2017 and 2018 combined, and $0.9 million thereafter.

As a member of Lloyd's and a capital provider to Syndicate 1729, ProAssurance is required to provide capital, referred to as FAL. At September 30, 2014, ProAssurance is satisfying the FAL requirement with investment securities on deposit with Lloyd's with a carrying value of $77.2 million (see Note 4). ProAssurance anticipates its FAL requirement for the 2015 underwriting year to be approximately £50.9 million, which would require ProAssurance to fund an additional £5.8 million (approximately $9.8 million if funded with U.S. currency) during 2014. At December 31, 2013, the FAL requirement was primarily met through a standby letter of credit (LOC).

ProAssurance has also issued an unconditional revolving credit agreement (the Credit Agreement) of up to £10 million ($16 million at September 30, 2014) to the Premium Trust Fund of Syndicate 1729 for the purpose of providing working capital. Advances under the Credit Agreement bear interest at 8.5% annually, and are repayable upon demand after December 31, 2016. As of September 30, 2014, £5.5 million ($9.2 million) had been advanced under the Credit Agreement.

9. Long-term Debt

ProAssurance’s outstanding long-term debt consisted of the following:

(In thousands)	September 30, 2014		December 31, 2013
Senior notes due 2023, unsecured, interest at 5.3% annually	$	250,000	$	250,000
Revolving credit agreement, maximum outstanding borrowings of $200 million permitted, expires in 2016	—		—
	$	250,000	$	250,000

Covenant Compliance

There are no financial covenants associated with the Senior Notes due 2023.

The Revolving credit agreement (the Agreement) contains customary representations, covenants and events constituting default, and remedies for default. The Agreement also defines financial covenants regarding permitted leverage ratios and minimum net worth. ProAssurance is currently in compliance with all covenants of the Agreement.

Additional Information

For additional information regarding ProAssurance's long-term debt, see Note 10 of the Notes to Consolidated Financial Statements included in ProAssurance's December 31, 2013 Form 10-K.

31

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

10. Shareholders’ Equity

At September 30, 2014 and December 31, 2013, ProAssurance had 100 million shares of authorized common stock and 50 million shares of authorized preferred stock. The Board has the authority to determine provisions for the issuance of preferred shares, including the number of shares to be issued, the designations, powers, preferences and rights, and the qualifications, limitations or restrictions of such shares. To date, the Board has not approved the issuance of preferred stock.

ProAssurance declared cash dividends of $0.30 per share during each of the first three quarters of 2014, totaling $52.9 million, which included the third quarter dividend of $17.3 million that was paid in October 2014. ProAssurance declared cash dividends of $0.25 per share during each of the first three quarters of 2013, totaling $46.4 million, which included the third quarter dividend of $15.5 million that was paid in October 2013. The liability for unpaid dividends was included in Other liabilities. Though dividends are typically paid in the month following the quarter in which they were declared, no dividends were paid in the first quarter of 2013 because payment of the regular fourth quarter 2012 dividend was accelerated into December 2012.

At September 30, 2014, Board authorizations for the repurchase of common shares or the retirement of outstanding debt of $136.7 million remained available for use. ProAssurance repurchased approximately 3.7 million and 0.2 million shares, having a total cost of $167.2 million and $8.0 million, during the nine months endedSeptember 30, 2014 and 2013, respectively.

Share-based compensation expense was $2.4 million and $8.0 million for the three and nine months endedSeptember 30, 2014, respectively, and $2.2 million and $6.9 million for the three and nine months endedSeptember 30, 2013, respectively. Related tax benefits were $0.8 million and $2.8 million for the three and nine months endedSeptember 30, 2014, respectively, and $0.8 million and $2.4 million for the three and nine months endedSeptember 30, 2013, respectively.

ProAssurance awarded approximately 50,000 restricted share units and 161,000 base performance share units to employees in February 2014. The fair value of each unit awarded was estimated at $46.34, equal to the market value of a ProAssurance common share on the date of grant. All awards are charged to expense as an increase to equity over the service period (generally the vesting period) associated with the award. Restricted share units and performance share units vest in their entirety at the end of a three-year period following the grant date based on a continuous service requirement and, for performance share units, achievement of a performance objective. Partial vesting is permitted for retirees. A ProAssurance common share is issued for each unit once vesting requirements are met, except that units sufficient to satisfy required tax withholdings are paid in cash. The number of common shares issued for performance share units varies from 75% to 125% of base awards depending upon the degree to which stated performance objectives are achieved. ProAssurance issued approximately 29,000 and 111,000 common shares to employees in February 2014 related to restricted share units and performance share units, respectively, granted in 2011. Shares issued for performance share units were awarded at the maximum level (125%).

ProAssurance issued approximately 30,000 common shares to employees in February 2014 as bonus compensation, as approved by the Compensation Committee of the Board. The shares issued were valued at fair value (the market price of a ProAssurance common share on the date of award).

Other Comprehensive Income (Loss) (OCI)

For the three and nine months endedSeptember 30, 2014 and September 30, 2013, OCI was primarily comprised of unrealized gains and losses arising during the period related to available-for-sale securities, less reclassification adjustments as shown in the table below, net of tax. At September 30, 2014 and December 31, 2013, accumulated other comprehensive income was comprised primarily of unrealized gains and losses from available-for-sale securities, including non-credit impairment losses previously recognized in OCI of $0.8 million and 0.5 million, respectively, net of tax. All tax effects were computed using a 35% rate. OCI and accumulated other comprehensive income also included immaterial amounts of foreign currency translation adjustments.

32

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Amounts reclassified from accumulated other comprehensive income to net income and the amounts of deferred tax expense (benefit) included in OCI were as follows:

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Reclassifications from accumulated other comprehensive income to net income, available-for-sale securities:
Realized investment gains (losses)	$	(473	)	$	2,403		$	2,133		$	8,638
Non-credit impairment losses reclassified to earnings, due to sale of securities or reclassification as a credit loss	—			—			—			(347		)
Total amounts reclassified, before tax effect	(473		)	2,403			2,133			8,291
Tax effect (at 35%)	166			(841		)	(747		)	(2,902		)
Net reclassification adjustments	$	(307	)	$	1,562		$	1,386		$	5,389
Deferred tax expense (benefit) included in OCI	$	(5,126	)	$	(1,746	)	$	(2,571	)	$	(26,358	)

11. Variable Interest Entities

ProAssurance holds passive interests in a number of entities that are considered to be Variable Interest Entities (VIEs) under GAAP guidance. ProAssurance's VIE interests principally consist of interests in LPs/LLCs formed for the purpose of achieving diversified equity and debt returns. ProAssurance VIE interests carried as a part of Other investments totaled $37.6 million at September 30, 2014 and $27.3 million at December 31, 2013. ProAssurance VIE interests carried as a part of Investment in unconsolidated subsidiaries totaled $58.1 million at September 30, 2014 and $49.5 million at December 31, 2013.

ProAssurance has not consolidated these VIEs because it has either very limited or no power to control the activities that most significantly affect the economic performance of these entities and is not the primary beneficiary of any of the entities. ProAssurance’s involvement with each entity is limited to its direct ownership interest in the entity. ProAssurance has no arrangements with any of the entities to provide other financial support to or on behalf of the entity. At September 30, 2014, ProAssurance’s maximum loss exposure relative to these investments was limited to the carrying value of ProAssurance’s investment in the VIE.

12. Earnings Per Share

Diluted weighted average shares is calculated as basic weighted average shares plus the effect, calculated using the treasury stock method, of assuming that dilutive stock options have been exercised and that performance, restricted and purchase share units have vested. All outstanding stock options, performance, restricted and purchase share units had a dilutive effect for the three and nine months endedSeptember 30, 2014 and 2013.

33

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

13. Segment Information

ProAssurance operates in four segments that are organized around the nature of the products and services provided: Specialty P&C, Workers' Compensation, Lloyd's Syndicate, and Corporate. A description of each segment follows.

Specialty P&C is primarily focused on professional liability insurance and medical technology and life sciences products liability insurance. The professional liability business primarily offers professional liability insurance to healthcare providers and institutions and to attorneys and their firms. The medical technology and life sciences business offers products liability insurance for medical technology and life sciences companies that manufacture or distribute products. The Specialty P&C segment cedes certain premium to the Lloyd's Syndicate segment under an agreement with Syndicate 1729. As discussed below, Syndicate 1729 operating results are reported on a quarter delay. The ceded premium associated with the Syndicate 1729 reinsurance agreement has been reported within the Specialty P&C segment on a similar lag, as this results in the ceded premium being reported in the same period in which the Lloyd's Syndicate segment reports the corresponding assumed premium.

Workers' Compensation provides workers' compensation products primarily to employers with 1,000 or fewer employees. The segment also offers alternative market solutions whereby policies written are 100% ceded either to a captive insurer unaffiliated with ProAssurance or to SPCs operated by a wholly owned subsidiary of ProAssurance. The SPCs are fully or partially owned by the employer (or employer group, association or affiliate) insured by the policies ceded. Financial results (underwriting profit or loss, plus investment income) of the SPCs accrue to the owners of that cell. Our workers' compensation segment is comprised entirely of the business acquired through Eastern on January 1, 2014.

Lloyd'sSyndicate includes operating results from ProAssurance's 58% participation in Lloyd's of London Syndicate 1729 that began writing business as of January 1, 2014. Syndicate 1729 underwrites risks over a wide range of property and casualty insurance and reinsurance lines. The results of this segment are reported on a quarter delay, except that investment results associated with the FAL investments and certain U.S. paid administrative expenses, primarily start-up costs, are reported concurrently as that information is available on an earlier time frame.

Corporate includes ProAssurance's U.S. investment operations, interest expense and U.S. income taxes, all of which are managed at the corporate level, non-premium revenues generated outside of our insurance entities, and corporate expenses.

The accounting policies of the segments are the same as those described in Note 1 of the Notes to Consolidated Financial Statements in ProAssurance’s December 31, 2013 report on Form 10-K and Note 1 herein. ProAssurance evaluates performance of its Specialty P&C and Workers' Compensation segments based on before tax underwriting profit or loss, and excludes investment performance. Performance of the Lloyd's Syndicate segment is evaluated based on underwriting profit or loss, and investment results of investment assets solely allocated to Syndicate 1729 operations, net of United Kingdom income tax expense. Performance of the Corporate segment is evaluated based on the contribution made to consolidated after tax results. ProAssurance accounts for inter-segment sales and transfers as if the sales or transfers were to third parties at current market prices. Assets are not allocated to segments because investments and assets are not managed at the segment level.

34

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

Financial data by segment for the three and nine months endedSeptember 30, 2014 and 2013 were as follows:

	Three Months Ended September 30, 2014
(In thousands)	Specialty P&C			Workers' Compensation			Lloyd's Syndicate			Corporate			Eliminations			Consolidated
Net premiums earned	$	123,791		$	49,792		$	3,445		$	—		$	—		$	177,028
Net investment income	—			—			120			32,710			—			32,830
Equity in earnings (loss) of unconsolidated subsidiaries	—			—			—			298			—			298
Net realized gains (losses)	—			—			—			(8,131		)	—			(8,131		)
Other income	1,071			179			(79		)	824			(187		)	1,808
Net losses and loss adjustment expenses	(63,639		)	(33,046		)	(2,537		)	—			—			(99,222		)
Underwriting, policy acquisition and operating expenses	(33,814		)	(14,785		)	(2,584		)	(3,189		)	187			(54,185		)
Segregated portfolio cells dividend expense	—			483			—			—			—			483
Interest expense	—			—			—			(3,606		)	—			(3,606		)
Income tax expense (benefit)	—			—			—			(12,525		)	—			(12,525		)
Segment operating results	$	27,409		$	2,623		$	(1,635	)	$	6,381		$	—		$	34,778
Significant non-cash items
Depreciation and amortization	$	2,334		$	1,602		$	157		$	8,219		$	—		$	12,312

	Nine Months Ended September 30, 2014
(In thousands)	Specialty P&C			Workers' Compensation			Lloyd's Syndicate			Corporate			Eliminations			Consolidated
Net premiums earned	$	374,704		$	143,960		$	6,397		$	—		$	—		$	525,061
Net investment income	—			—			244			92,544			—			92,788
Equity in earnings (loss) of unconsolidated subsidiaries	—			—			—			2,767			—			2,767
Net realized gains (losses)	—			—			—			7,659			—			7,659
Other income	4,167			503			(79		)	1,856			(392		)	6,055
Net losses and loss adjustment expenses	(191,263		)	(91,975		)	(4,405		)	—			—			(287,643		)
Underwriting, policy acquisition and operating expenses	(101,044		)	(45,379		)	(5,999		)	(6,826		)	392			(158,856		)
Segregated portfolio cells dividend expense	—			(2,355		)	—			—			—			(2,355		)
Interest expense	—			—			—			(10,697		)	—			(10,697		)
Income tax expense (benefit)	—			—			—			(43,328		)	—			(43,328		)
Segment operating results	$	86,564		$	4,754		$	(3,842	)	$	43,975		$	—		$	131,451
Significant non-cash items
Depreciation and amortization	$	6,708		$	4,384		$	329		$	24,865		$	—		$	36,286

35

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

	Three Months Ended September 30, 2013
(In thousands)	Specialty P&C			Workers' Compensation		Lloyd's Syndicate		Corporate			Eliminations		Consolidated
Net premiums earned	$	133,598		$	—	$	—	$	—		$	—	$	133,598
Net investment income	—			—		—		33,889			—		33,889
Equity in earnings (loss) of unconsolidated subsidiaries	—			—		—		(305		)	—		(305		)
Net realized gains (losses)	—			—		—		12,500			—		12,500
Other income	1,225			—		—		579			—		1,804
Gain on acquisition	—			—		—		494			—		494
Net losses and loss adjustment expenses	(61,637		)	—		—		—			—		(61,637		)
Underwriting, policy acquisition and operating expenses	(30,708		)	—		—		(2,640		)	—		(33,348		)
Interest expense	—			—		—		(322		)	—		(322		)
Income tax expense (benefit)	—			—		—		(23,316		)	—		(23,316		)
Segment operating results	$	42,478		$	—	$	—	$	20,879		$	—	$	63,357
Significant non-cash items
Depreciation and amortization	$	990		$	—	$	—	$	8,930		$	—	$	9,920

	Nine Months Ended September 30, 2013
(In thousands)	Specialty P&C			Workers' Compensation		Lloyd's Syndicate		Corporate			Eliminations			Consolidated
Net premiums earned	$	398,528		$	—	$	—	$	—		$	—		$	398,528
Net investment income	—			—		—		99,282			—			99,282
Equity in earnings (loss) of unconsolidated subsidiaries	—			—		—		(3,500		)	—			(3,500		)
Net realized gains (losses)	—			—		—		47,650			—			47,650
Other income	3,902			—		—		1,410			(7		)	5,305
Gain on acquisition	—			—		—		35,986			—			35,986
Net losses and loss adjustment expenses	(189,872		)	—		—		—			—			(189,872		)
Underwriting, policy acquisition and operating expenses	(95,907		)	—		—		(9,692		)	7			(105,592		)
Interest expense	—			—		—		(1,085		)	—			(1,085		)
Income tax expense (benefit)	—			—		—		(60,044		)	—			(60,044		)
Segment operating results	$	116,651		$	—	$	—	$	110,007		$	—		$	226,658
Significant non-cash items
Depreciation and amortization	$	4,845		$	—	$	—	$	29,519		$	—		$	34,364

36

ProAssurance Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

September 30, 2014

The following table provides detailed information regarding ProAssurance's gross premiums earned by product as well as a reconciliation to net premiums earned. All gross premiums earned are from external customers except as noted. ProAssurance's insured risks are primarily within the United States.

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Specialty P&C Segment
Gross premiums earned:
Healthcare professional liability	$	120,623		$	128,532		$	361,179		$	382,678
Legal professional liability	7,145			6,849			21,147			20,328
Medical technology and life sciences products liability	9,258			8,436			27,043			24,442
Other	420			463			1,445			1,336
Ceded premiums earned*	(13,655		)	(10,682		)	(36,110		)	(30,256		)
Segment net premiums earned	$	123,791		$	133,598		$	374,704		$	398,528
Workers' Compensation Segment
Gross premiums earned:
Traditional business	$	42,345		$	—		$	119,702		$	—
Alternative market business	14,345			—			40,253			—
Ceded premiums earned	(6,898		)	—			(15,995		)	—
Segment net premiums earned	$	49,792		$	—		$	143,960		$	—
Lloyd's Syndicate Segment
Gross premiums earned:
Property and casualty*	$	4,085		$	—		$	7,110		$	—
Ceded premiums earned	(640		)	—			(713		)	—
Segment net premiums earned	$	3,445		$	—		$	6,397		$	—
Consolidated net premiums earned	$	177,028		$	133,598		$	525,061		$	398,528

* Includes premium ceded from the Specialty P&C Segment to the Lloyd's Syndicate Segment of $1.1 million for the three months and $1.6 million for nine months ended September 30, 2014, respectively.

37

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

The following discussion should be read in conjunction with the Condensed Consolidated Financial Statements and Notes to those statements which accompany this report. A glossary of insurance terms and phrases is available on the investor section of our website. Throughout the discussion, references to "ProAssurance," "PRA," "Company," "we," "us" and "our" refer to ProAssurance Corporation and its consolidated subsidiaries. The discussion contains certain forward-looking information that involves risks and uncertainties. As discussed under the heading "Forward-Looking Statements," our actual financial condition and operating results could differ significantly from these forward-looking statements.

Overview

We report our results in four distinct segments, based on the operational focus of the segment. Our Specialty Property and Casualty (Specialty P&C) segment includes both our professional liability business and our medical technology and life sciences business. Our Workers' Compensation segment includes the business acquired through our January 1, 2014 purchase of Eastern and includes workers' compensation insurance for employers, groups and associations. Our Lloyd's Syndicate segment includes operating results from our participation in Lloyd's Syndicate 1729, which began operations January 1, 2014. Information regarding Lloyd's operations derived from U.K. based entities is reported on a quarter delay, although investment results associated with our Funds at Lloyd's (FAL) investments are reported concurrently as those results are available on an earlier time frame. Our Corporate segment includes our U.S. investment operations which are managed at the corporate level, non-premium revenues generated outside of our insurance entities, corporate expenses, interest and U.S. income taxes. Additional information regarding our segments is included in Note 13 of the Notes to Condensed Consolidated Financial Statements and in Part I of our 2013 Form 10K.

Critical Accounting Estimates

Our Condensed Consolidated Financial Statements are prepared in conformity with U.S. generally accepted accounting principles (GAAP). Preparation of these financial statements requires us to make estimates and assumptions that affect the amounts we report on those statements. We evaluate these estimates and assumptions on an ongoing basis based on current and historical developments, market conditions, industry trends and other information that we believe to be reasonable under the circumstances. There can be no assurance that actual results will conform to our estimates and assumptions; reported results of operations may be materially affected by changes in these estimates and assumptions.

Management considers the following accounting estimates to be critical because they involve significant judgment by management and the effect of those judgments could result in a material effect on our financial statements.

Reserve for Losses and Loss Adjustment Expenses

The largest component of our liabilities is our reserve for losses and loss adjustment expenses ("reserve for losses" or "reserve"), and the largest component of expense for our operations is incurred losses and loss adjustment expenses (also referred to as "losses and loss adjustment expenses," "incurred losses," "losses incurred," and "losses"). Incurred losses reported in any period reflect our estimate of losses incurred related to the premiums earned in that period as well as any changes to our previous estimate of the reserve required for prior periods.

As of September 30, 2014 our reserve is almost entirely comprised of long-tail risk exposures. The estimation of long-tailed insurance losses is inherently difficult and is subject to significant judgment on the part of management. Due to the nature of our claims, our loss costs, even for claims with similar characteristics, can vary significantly depending upon many factors including the specific characteristics of the claim and the manner in which the claim is resolved. Long-tailed insurance is characterized by the extended period of time typically required to assess the viability of a claim, potential damages, if any, and then to reach a resolution of those claims. For ProAssurance the claims resolution process often extends to more than five years. The combination of continually changing conditions and the extended time required for claim resolution results in a loss cost estimation process that requires actuarial skill and the application of significant judgment, and such estimates require periodic revision.

Our reserve is established by management after taking into consideration a variety of factors including premium rates, claims frequency, historical paid and incurred loss development trends, the expected effect of inflation, general economic trends, the legal and political environment, and the conclusions reached by our internal and consulting actuaries. We update and review the data underlying the estimation of our reserve for losses each reporting period and make adjustments to loss estimation assumptions that we believe best reflect emerging data. Both our internal and consulting actuaries perform an in-depth review of our reserve for losses on at least a semi-annual basis using the loss and exposure data of our insurance subsidiaries, supplemented to the extent necessary by relevant industry loss and exposure data. In periods in which business combinations occur, we must also establish reserves for the loss exposures assumed.

38

Our reserving process can be broadly grouped into three areas: the establishment of the initial reserve for risks assumed in business combinations (the acquired reserve), the establishment of the reserve for the current accident year (the initial reserve) and the re-estimation of the reserve for prior accident years (development of prior accident years).

Acquired Reserve

The acquisition of Eastern increased our loss reserve by $153.2 million which represented the fair value of Eastern's loss reserve at the time of the acquisition. The fair value of the reserve for losses and loss adjustment expenses and related reinsurance recoverables was based on an actuarial estimate of the expected future net cash flows, a reduction of those cash flows for the time value of money determined utilizing the U.S. Treasury Yield Curve, and a risk adjustment to reflect the net present value of profit that an investor would demand in return for the associated risks. Expected net cash flows were derived from the expected loss payment patterns included in an actuarial analysis of Eastern's reserve performed as of December 31, 2013. Actuarial methods used to evaluate Eastern's reserve included the Bornhuetter-Ferguson Method (Paid and Reported) and the Development Method (Paid and Reported) described in our Critical Accounting Estimates section in Item 7 of our 2013 Form 10K. The fair value of the reserve, reflecting the risk margin discussed above, exceeded the undiscounted loss reserve previously established by Eastern by $9.3 million; this fair value adjustment is being amortized over the average expected life of the reserve of 6 years.

Initial Reserve-Current Accident Year

Considerable judgment is required in establishing our initial reserve for any current accident year period, as there is limited open or closed claims data available for a current accident year period at the time the reserve for that period is estimated. Our process for setting an initial reserve considers the unique characteristics of each line of business, but in general we rely heavily on the loss assumptions that were used to price business during the accident year, as our pricing reflects our analysis of loss costs that we expect to incur relative to the business being priced.

Specialty P&C Segment. Professional and product liability loss costs are impacted by many factors, including but not limited to, the nature of the claim, including whether or not the claim is an individual or a mass tort claim, the personal situation of the claimant or the claimant's family, the outcome of jury trials, the legislative and judicial climate where any potential litigation may occur, general economic conditions and, for claims involving bodily injury, the trend of healthcare costs. Within our Specialty P&C segment, for our healthcare professional liability (HCPL) business (63% of consolidated gross premiums earned for the nine months endedSeptember 30, 2014) we set an initial reserve using the average loss ratio used in our pricing, plus an additional provision in consideration of the historical loss volatility we and others in the industry have experienced. For our HCPL business, our target loss ratio during recent accident years has approximated 75%, and the provision for loss volatility has ranged from 8 to 10 percentage points, producing an overall average initial loss ratio for our HCPL business of approximately 85%. We believe use of a provision for volatility considers inherent risks associated with our rate development process and the historic volatility of professional liability losses (the industry has experienced accident year loss ratios as high as 163% and as low as 53% over the past 30 years) and produces a reasonable best estimate of the reserve required to cover actual ultimate unpaid losses. A similar practice is followed for our legal professional liability business (4% of consolidated gross premiums earned for the nine months endedSeptember 30, 2014). The risks insured in our medical technology and life sciences products liability business (5% of consolidated gross premiums earned for the nine months endedSeptember 30, 2014) are more varied, and policies are individually priced based on the risk characteristics of the policy. Therefore, for this business we establish an initial reserve using our most recently developed actuarial estimates of losses expected to be incurred based on factors which include: results from prior analysis of similar business, industry indications, observed trends and judgment. The products liability line of business exhibits similar volatility to HCPL, and the actuarial estimate includes a provision for volatility.

Severity is defined as the average cost of resolving claims, and the severity trend is the increase or decrease in severity from period to period. The severity trend assumption is a key assumption for both pricing models and the actuarial estimation of our reserve. The severity trend is an explicit component of our pricing models, whereas in our reserving process the severity trend's impact is implicit. Our estimate of this trend and our expectations about changes in this trend impact a variety of factors, from the selection of expected loss ratios to the ultimate point estimates established by management.

39

Because of the implicit and wide-ranging nature of severity trend assumptions on the loss reserving process, it is not practical to specifically isolate the impact of changing severity trends. However, because severity is an explicit component of our HCPL pricing process, we can better isolate the impact that changing severity can have on our loss costs and loss ratios as regards our pricing models for this business component. Our current HCPL pricing models assume a severity trend of 2% to 3% in most states and lines of business. If the severity trend were to be higher by 1 percentage point, the impact would be an increase in our expected loss ratio for this business of 3.2 percentage points, based on current claim disposition patterns. An increase in the severity trend of 3 percentage points would result in a 10.1 percentage point increase in our expected loss ratio. Due to the long tailed nature of our claims and the previously discussed historical volatility of loss costs, selection of a severity trend assumption is a subjective process that is inherently likely to prove inaccurate over time. Given the long tail and volatility, we are generally cautious in making changes to the severity assumptions within our pricing models. Also of note is that all open claims and accident years are generally impacted by a change in the severity trend, which compounds the effect of such a change.

For the 2004 to 2009 accident years, both our internal and consulting actuaries observed an unprecedented reduction in the frequency of HCPL claims (or number of claims per exposure unit) that cannot be attributed to any single factor. We believe that much of the reduction in claim frequency is the result of a decline in the filing of non-meritorious lawsuits that have historically been dismissed or otherwise resulted in no payment of indemnity on behalf of our insureds. With fewer non-meritorious claims being filed we expect that the claims that are filed have the potential for greater average losses, or greater severity. As a result, we cannot be certain as to the impact this decline will ultimately have on the average cost of claims, which has complicated the selection of an appropriate severity trend for our pricing models for these lines. It has also made it more challenging to factor severity into the various actuarial methodologies we use to evaluate our reserve. Based on a weighted average of payments, 85% of our HCPL claims are resolved after eight years for a given accident year. Due to this long tail, we continue to be uncertain of the full impact of the observed decline in frequency and whether the expected increase in severity will materialize.

Although we remain uncertain regarding the ultimate severity and frequency trends to project into the future due to the long-tailed nature of our business, we have given consideration to both factors in setting our rates. For our HCPL business this practice has resulted in rate reductions in recent years. For example, on average, excluding our podiatry business acquired in 2009, we have gradually reduced the premium rates we charge on our standard physician renewal business (our largest HCPL line) by approximately 17% from the beginning of 2006 to September 30, 2014. Loss ratios for the current accident years have thus remained fairly constant because expected loss reductions have been reflected in our rates.

Workers' Compensation Segment. Many factors affect the ultimate losses incurred for our workers' compensation coverages (28% of consolidated gross premiums earned for the nine months endedSeptember 30, 2014), including, but not limited to, the type of injury, treatments available for the injury as well as the cost of those treatments, the responsiveness of the worker and the employer to rehabilitation plans, the willingness of claimants to settle claims, the involvement of attorneys, and inflation or deflation of healthcare costs. We do not measure and estimate values for all of these variables individually due to the difficulty of directly measuring the impact of individual factors. Rather, we rely on historical experience to select an expected loss ratio for various premium groupings, based on rate changes, type and geographic location of the insured. We perform an analysis of claims data quarterly and use the information obtained from this analysis to assist us in selecting an expected loss ratio.

Development of Prior Accident Years

We re-evaluate the reserve for prior accident years each period based on our most recently available claims data and currently available industry trend information. Changes to previously established reserve estimates are recognized in the current period if management’s best estimate of ultimate losses differs from the estimate previously established. While management considers a variety of variables in determining its best estimate, in general, as claims age, our methodologies give more weight to actual loss costs which, as a whole, continue to indicate that ultimate loss costs will be lower than our previous estimates. The discussion in our Critical Accounting Estimates section in Item 7 of our 2013 Form 10K includes additional information regarding the methodologies used to evaluate our reserve.

Any change in our estimate of net ultimate losses for prior years is reflected in net income in the period in which such changes are made. Over the past several years such changes have reduced our estimate of net ultimate losses, resulting in a reduction of reported losses for the period and a corresponding increase in pre-tax income.

We recognized net favorable reserve development of $42.9 million during the three months endedSeptember 30, 2014, of which $42.3 million related to our Specialty P&C segment and $0.6 million related to our Workers' Compensation segment. During the nine months endedSeptember 30, 2014, we recognized net favorable reserve development of $133.3 million, of which $130.4 million related to our Specialty P&C segment and $2.9 million related to our Workers' Compensation segment. The development recognized within the Specialty P&C segment was primarily attributable to the favorable resolution of HCPL

40

claims during the period and an evaluation of established case reserves and paid claims data that indicated that the actual severity trend associated with the remaining HCPL claims continues to be less than we had previously estimated. Development recognized within our Workers' Compensation segment includes amortization of the purchase accounting fair value adjustment of $0.4 million and $1.2 million for the three and nine months endedSeptember 30, 2014, respectively; the remaining development of $0.2 million and $1.7 million for the three- and nine-month periods, respectively, was attributable to our segregated portfolio cells (SPCs) which are evaluated at the cell level. Because a relatively small number of claims are open per cell, the closing of claims can affect the actuarial projections for the remaining open claims in the cell to an extent that indicates development should be recognized for the cell.

Due to the size of our consolidated reserve for losses and the large number of claims outstanding at any point in time, even a small percentage adjustment to our total reserve estimate could have a material effect on our results of operations for the period in which the adjustment is made.

Investment Valuations

We record the majority of our investments at fair value as shown in the table below. At September 30, 2014 the distribution of our investments based on GAAP fair value hierarchies (levels) was as follows:

	Distribution by GAAP Fair Value Hierarchy			September 30, 2014
	Level 1	Level 2	Level 3	Total Investments
Investments recorded at:
Fair value	10%	80%	4%	94%
Other valuations				6%
Total Investments				100%

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. All of our fixed maturity and equity security investments are carried at fair value. Our short-term securities are carried at amortized cost, which approximates fair value.

Because of the number of securities we own and the complexity and cost of developing accurate fair values, we utilize multiple independent pricing services to assist us in establishing the fair value of individual securities. The pricing services provide fair values based on exchange traded prices, if available. If an exchange traded price is not available, the pricing services, if possible, provide a fair value that is based on multiple broker/dealer quotes or that has been developed using pricing models. Pricing models vary by asset class and utilize currently available market data for securities comparable to ours to estimate the fair value for our security. The pricing services scrutinize market data for consistency with other relevant market information before including the data in the pricing models. The pricing services disclose the types of pricing models used and the inputs used for each asset class. Determining fair values using these pricing models requires the use of judgment to identify appropriate comparable securities and to choose a valuation methodology that is appropriate for the asset class and available data.

The pricing services provide a single value per instrument quoted. We review the values provided for reasonableness each quarter by comparing market yields generated by the supplied value versus market yields observed in the market place. We also compare yields indicated by the provided values to appropriate benchmark yields and review for values that are unchanged or that reflect an unanticipated variation as compared to prior period values. In addition, we compare provided information for consistency with our other pricing services, known market data and information from our own trades, considering both values and valuation trends. We also review weekly trades versus the prices supplied by the services. If a supplied value appears unreasonable, we discuss the valuation in question with the pricing service and make adjustments if deemed necessary. To date, our review has not resulted in any changes to the values supplied by the pricing services.

The pricing services do not provide a fair value unless an exchange traded price or multiple observable inputs are available. As a result, the pricing services may provide a fair value for a security in some periods but not others, depending upon the level of recent market activity for the security or comparable securities.

Level 1 Investments

Fair values for our equity securities and a portion of our convertible securities and short-term securities are determined using exchange traded prices. There is little judgment involved when fair value is determined using an exchange traded price. In accordance with GAAP, for disclosure purposes we classify securities valued using an exchange traded price as Level 1 securities.

41

Level 2 Investments

Most fixed income securities do not trade daily, and thus exchange traded prices are generally not available for these securities. However, market information (often referred to as observable inputs or market data, including but not limited to, last reported trade, non-binding broker quotes, bids, benchmark yield curves, issuer spreads, two sided markets, benchmark securities, offers and recent data regarding assumed prepayment speeds, cash flow and loan performance data) is available for most of our fixed income securities. We determine fair value for a large portion of our fixed income securities using available market information. In accordance with GAAP, for disclosure purposes we classify securities valued based on multiple market observable inputs as Level 2 securities.

Level 3 Investments

When a pricing service does not provide a value for one of our fixed maturity securities, management estimates fair value using either a single non-binding broker quote or pricing models that utilize market based assumptions which have limited observable inputs. The process involves significant judgment in selecting the appropriate data and modeling techniques to use in the valuation process. For disclosure purposes we classify fixed maturity securities valued using limited observable inputs as Level 3 securities.

We also classify as Level 3 our investment interests that are carried at equity, valued using a fund-provided net asset value (NAV) for our interest, which approximates fair value. All investments valued in this manner are LP or LLC interests that hold debt and equity securities. At September 30, 2014 interests valued using a fund-provided NAV totaled $110.8 million, or 3% of total investments, and were classified as part of our Investment in Unconsolidated Subsidiaries.

Investments - Other Valuation Methodologies

Certain of our investments, in accordance with GAAP for the type of investment, are measured using methodologies other than fair value. At September 30, 2014 these investments represented approximately 6% of total investments and are detailed in the following table. Additional information about these investments is provided in Notes 3 and 4 of the Notes to Condensed Consolidated Financial Statements.

(In millions)	Carrying Value		GAAP Measurement Method
Other investments:
Investments in LPs, at cost	$	57.6	Cost
Other, principally Federal Home Loan Bank capital stock	4.4		Cost
Total other investments	62.0
Investment in unconsolidated subsidiaries:
Investments in tax credit partnerships	137.4		Equity
Equity method LPs/LLCs	6.8		Equity
Total investment in unconsolidated subsidiaries	144.2
Business owned life insurance	55.9		Cash surrender value
Total investments - Other valuation methodologies	$	262.1

Investment Impairments

We evaluate our investments on at least a quarterly basis for declines in fair value that represent other than temporary impairment (OTTI). We consider an impairment to be an OTTI if we intend to sell the security or if we believe we will be required to sell the security before we fully recover the amortized cost basis of the security. Otherwise, we consider various factors in our evaluation, as discussed below.

For debt securities, we consider whether we expect to fully recover the amortized cost basis of the security, based upon consideration of some or all of the following:

• third party research and credit rating reports;

• the current credit standing of the issuer, including credit rating downgrades;

• the extent to which the decline in fair value is attributable to credit risk specifically associated with the security or its issuer;

42

• our internal assessments and those of our external portfolio managers regarding specific circumstances surrounding a security, which can cause us to believe the security is more or less likely to recover its value than other securities with a similar structure;

• for asset-backed securities, the origination date of the underlying loans, the remaining average life, the probability that credit performance of the underlying loans will deteriorate in the future, and our assessment of the quality of the collateral underlying the loan;

• failure of the issuer of the security to make scheduled interest or principal payments;

• any changes to the rating of the security by a rating agency;

• recoveries or additional declines in fair value subsequent to the balance sheet date; and

• our intent to sell and whether it is more likely than not we will be required to sell the security before the recovery of its amortized cost basis.

In assessing whether we expect to recover the cost basis of debt securities, particularly asset-backed securities, we must make a number of assumptions regarding the cash flows that we expect to receive from the security in future periods. These judgments are subjective in nature and may subsequently be proved to be inaccurate.

We evaluate our cost method interests in LPs/LLCs for OTTI by considering whether there has been a decline in fair value below the recorded value, which involves assumptions and estimates. We receive a report from each of the LPs/LLCs at least quarterly which provides us a NAV for our interest. The NAV is based on the fair values of securities held by the LP/LLC as determined by the LP/LLC manager. We consider the most recent NAV provided, the performance of the LP/LLC relative to the market, the stated objectives of the LP/LLC, the cash flows expected from the LP/LLC and audited financial statements of the entity, if available, in considering whether an OTTI exists.

Our investments in tax credit partnerships are evaluated for OTTI by considering both qualitative and quantitative factors which include: whether cash flows currently expected from the investment, primarily tax benefits, equal or exceed the carrying value of the investment, whether currently expected cash flows are less than those expected at the time the investment was acquired, and our ability and intent to hold the investment until the recovery of its carrying value.

We also evaluate our holdings of Federal Home Loan Bank (FHLB) securities for impairment. We consider the current capital status of the FHLB, whether the FHLB is in compliance with regulatory minimum capital requirements, and the FHLB’s most recently reported operating results.

Deferred Policy Acquisition Costs

Policy acquisition costs (primarily commissions, premium taxes and underwriting salaries) which are directly related to the successful acquisition of new and renewal premiums are capitalized as deferred policy acquisition costs and charged to expense, net of ceding commissions earned, as the related premium revenue is recognized. We evaluate the recoverability of our deferred policy acquisition costs each reporting period, and any amounts estimated to be unrecoverable are charged to expense in the current period. As of September 30, 2014 we have not determined that any amounts are unrecoverable.

ProAssurance's fair value estimate of the value of business acquired (VOBA), calculated as the present value of future earnings expected from the insurance contracts acquired, approximated the carrying value of Eastern's asset for deferred policy acquisition costs as of the acquisition date. Consequently, Eastern's asset for deferred policy acquisition costs was recognized in the purchase price allocation in lieu of recognizing an intangible asset for VOBA.

Deferred Taxes

Deferred federal income taxes arise from the recognition of temporary differences between the bases of assets and liabilities determined for financial reporting purposes and the bases determined for income tax purposes. Our temporary differences principally relate to our loss reserve, unearned premiums, deferred policy acquisition costs, unrealized investment gains (losses), and basis differences on investment assets. Deferred tax assets and liabilities are measured using the enacted tax rates expected to be in effect when such benefits are realized. We review our deferred tax assets quarterly for impairment. If we determine that it is more likely than not that some or all of a deferred tax asset will not be realized, a valuation allowance is recorded to reduce the carrying value of the asset. In assessing the need for a valuation allowance, management is required to make certain judgments and assumptions about our future operations based on historical experience and information as of the measurement period regarding reversal of existing temporary differences, carryback capacity, future taxable income (including its capital and operating characteristics) and tax planning strategies. We did not have any significant valuation allowances as of September 30, 2014.

43

Unrecognized Tax Benefits

We evaluate tax positions taken on tax returns and recognize positions in our financial statements when it is more likely than not that we will sustain the position upon resolution with a taxing authority. If recognized, the benefit is measured as the largest amount of benefit that has a greater than fifty percent probability of being realized. We review uncertain tax positions each period, considering changes in facts and circumstances, such as changes in tax law, interactions with taxing authorities and developments in case law, and make adjustments as we consider necessary. Adjustments to our unrecognized tax benefits may affect our income tax expense, and settlement of uncertain tax positions may require the use of cash. At September 30, 2014, our liability for unrecognized tax benefits approximated $0.6 million.

Goodwill

Management evaluates the carrying value of goodwill annually as of October 1st. If, at any time during the year, events occur or circumstances change that would more likely than not reduce the fair value below the carrying value, we also evaluate goodwill at that time. As of October 1, 2013 we evaluated goodwill as assigned to one reporting unit because, at that time, we operated as a single operating segment and all of our segment components were economically similar. We estimated the fair value of our reporting unit on the evaluation date based on market capitalization and an expected premium that would be paid to acquire control of our Company (a control premium). We then performed a sensitivity analysis using a range of historical stock prices and control premiums. Based on this evaluation, we concluded that the fair value of our reporting unit exceeded the carrying value and no adjustment to impair goodwill was necessary. As of January 1, 2014, due to the acquisition of Eastern and commencement of operations by Syndicate 1729, we are operating in multiple segments and future evaluations of goodwill will reflect multiple reporting units consistent with our segment structure. Note 13 of the Notes to Condensed Consolidated Financial Statements provides additional information regarding our segments.

Goodwill is recognized in conjunction with acquisitions as the excess of the purchase consideration for the acquisition over the fair value of identifiable assets acquired and liabilities assumed. The fair value of identifiable assets and liabilities, and thus goodwill, is subject to redetermination within a measurement period of up to one year following completion of an acquisition.

Intangibles

Intangible assets with definite lives are amortized over the estimated useful life of the asset. Amortizable intangible assets primarily consist of agency and policyholder relationships, renewal rights and trade names. Intangible assets with an indefinite life, primarily state licenses, are not amortized. Increases in both amortizable and non-amortizable intangible assets during 2014 were attributable to intangible assets recognized related to the 2014 acquisition of Eastern. Intangible assets are evaluated for impairment on an annual basis. Additional information regarding intangible assets is included in Note 1 of the Notes to Condensed Consolidated Financial Statements.

Audit Premium

Workers’ compensation premiums are determined based upon the payroll of the insured, the applicable premium rates and, where applicable, an experience based modification factor. An audit of the policyholders’ records is conducted after policy expiration to make a final determination of applicable premiums. Audit premium due from or due to a policyholder as a result of an audit is reflected in net premiums earned when billed. We track, by policy, the amount of additional premium billed in final audit invoices as a percentage of payroll exposure and use this information to estimate the probable additional amount of earned, but unbilled, (EBUB) premium as of the balance sheet date. We include changes to the EBUB premium estimate in net premiums earned in the period recognized.

Accounting Changes

We are not aware of any accounting changes not yet adopted as of September 30, 2014 that would have a material effect on our results of operations or financial position. Note 1 of the Notes to Condensed Consolidated Financial Statements provides additional detail regarding accounting changes.

44

Liquidity and Capital Resources and Financial Condition

Overview

ProAssurance Corporation is a holding company and is a legal entity separate and distinct from its subsidiaries. The holding company has no business operations apart from its investment operations, thus dividends from its operating subsidiaries represent a significant source of funds for its obligations, including debt service and shareholder dividends. At September 30, 2014, we held cash and liquid investments of approximately $263.2 million outside our insurance subsidiaries that were available for use without regulatory approval. Our holding company also has $200 million available under a revolving credit agreement, as discussed in this section under the heading "Debt."

Dividends that may be or have been paid by our insurance subsidiaries during 2014 are as follows:

($ in thousands)	2014
Dividends available to be paid in 2014 without regulatory approval	$	260,300
Ordinary dividends paid or declared in 2014:
Paid during nine months ended 9/30/14	$	(62,500	)
Declared dividends unpaid at 9/30/14	$	(166,200	)
Dividends available to be paid during remainder of 2014 without regulatory approval	$	31,600
Extraordinary dividends during 2014:
Paid during during October 2014	$	(50,000	)
Submitted for approval in 2014 but not yet paid	$	(6,300	)

Operating Activities and Related Cash Flows

The principal components of our operating cash flows are the excess of premiums collected and net investment income over losses paid and operating costs, including income taxes. Timing delays exist between the collection of premiums and the payment of losses associated with the premiums. Premiums are generally collected within the twelve-month period after the policy is written, while our claim payments are generally paid over a more extended period of time. Likewise, timing delays exist between the payment of claims and the collection of any associated reinsurance recoveries.

Our operating activities provided cash of approximately $101.1 million and $24.0 million for the nine months endedSeptember 30, 2014 and 2013, respectively. The table below summarizes changes in our operating cash flows as compared to the prior year.

	Operating Cash Flow
(In Millions)	2014 vs 2013			2013 vs 2012
Cash provided (used) by operating activities for the nine months ended September 30, 2013 and 2012, respectively	$	24		$	61
Increase (decrease) in operating cash flows:
Increase (decrease) in premium receipts (1)	(15		)	(28		)
(Increase) decrease in payments to reinsurers (2)	(10		)	(6		)
(Increase) decrease in losses paid, net of reinsurance recoveries (3)	9			14
Increase (decrease) in deposit contracts (4)	—			(5		)
Increase (decrease) in cash received from investments (5)	(12		)	(1		)
(Increase) decrease in cash paid for other expenses and operating liabilities (6)	4			(1		)
(Increase) decrease in cash paid for interest (7)	(6		)	1
(Increase) decrease in Federal and state income tax payments (8)	85			(1		)
Net cash flows provided (used) by acquisitions completed during 2014 and 2013, respectively, and, in 2014, net cash flows from our participation in Syndicate 1729 (9)	21			(11		)
Other amounts not individually significant, net	1			1
Cash provided (used) by operating activities for the nine months ended September 30, 2014 and September 30, 2013, respectively	$	101		$	24

45

(1) The reduction in premium receipts for both 2014 and 2013 reflected lower premium volume during the preceding twelve month periods, exclusive of the effect of acquisitions.

(2) The increase in payments to reinsurers for both 2014 and 2013 was primarily attributable to expansion of our shared risk arrangements and, for 2014, to payments made pursuant to our quota share reinsurance agreement with Syndicate 1729. Our 58% share of Syndicate 1729 net cash flows, reported in item 9 below, reflects receipt of these payments. See the discussion in the Premiums section for our Specialty P&C segment under the heading "Ceded Premiums Written" for additional information.

(3) The timing of our net loss payments varies from period to period because the process for resolving claims is complex and occurs at an uneven pace depending upon the circumstances of the individual claim. The reduction in loss payments for both 2014 and 2013 primarily related to the number of large settlements paid and the timing of reinsurance collections on those settlements as compared to claim settlement activity in the prior year.

(4) We are party to certain contracts that involve claims handling but do not transfer insurance risk. These contracts do not constitute a significant business activity for us, but did reduce cash flows in 2013 as compared to 2012.

(5) The decline in cash received from investments for 2014 primarily reflects lower receipts from our fixed income securities.

(6) Settlements of certain operating liabilities were lower in 2014 than in 2013 primarily due to timing differences. Also, approximately $2.2 million of the 2014 decrease in other expenses was attributable to transaction costs paid in 2013 for a business combination completed in 2013. Transaction costs paid in 2014 for a business combination completed in 2014 are included in item 9 below.

(7) The increase in cash paid for interest during 2014 is primarily due to a higher interest rate on a greater amount of outstanding long-term debt as compared to 2013.

(8) The decrease in net tax payments during 2014 as compared to those made in 2013 primarily reflected the following:

• Tax refunds totaling $30.6 million, exclusive of interest, received in 2014 related to an Internal Revenue Service (IRS) examination, as discussed in further detail in this section under the heading "Taxes." The refunds included the return of a $20.6 million protective tax payment made in 2013.

• Final tax payments made during 2014 for the prior fiscal year were $29.1 million lower than those made in 2013.

• Estimated tax payments for the current fiscal year were $7.1 million lower during 2014 than those made in 2013.

The net increase in tax payments during 2013 as compared to those made in 2012 primarily reflected the following:

• A $20.6 million protective tax payment made in 2013 as noted above. No such payment was made in 2012.

• Final tax payments made during 2014 for the prior fiscal year were $8.3 million lower than those made in 2012.

• Estimated tax payments for the current fiscal year were $7.9 million lower during 2013 than those made in 2012.

(9) Operations acquired in 2014 as a part of the Eastern transaction produced positive operating cash flows of approximately $22.0 million in 2014. Our Lloyd's Syndicate operations used operating cash flows of approximately $1.3 million, primarily due to the payment of start-up expenses.

Operations acquired in 2013used cash of approximately $11.0 million, primarily due to the payment of transaction costs, the payment of several large prior accident year claims, and normal expenses for which the timing of the payment differed from the recognition of the expense.

Reinsurance

Within our Specialty P&C segment, we use insurance and reinsurance (collectively, "reinsurance") to provide capacity to write larger limits of liability, to provide reimbursement for losses incurred under the higher limit coverages we offer, to provide protection against losses in excess of policy limits, and, in the case of risk sharing arrangements, to provide custom insurance solutions for large customer groups. Within our Workers' Compensation segment, we use reinsurance to reduce our net liability on individual risks, to mitigate the effect of significant loss occurrences (including catastrophic events), to stabilize underwriting results, and to increase underwriting capacity by decreasing leverage. The purchase of reinsurance does not relieve us from the ultimate risk on our policies, but it does provide reimbursement for certain losses we pay.

Within our Specialty P&C segment, we generally reinsure professional liability risks under annual treaties (our excess of loss reinsurance arrangements) pursuant to which the reinsurers agree to assume all or a portion of all risks that we insure above our individual risk retention of $1 million per claim, up to the maximum individual limit offered. Historically, our professional liability per claim retention level has been 100% of the first $1 million of coverage and up to 15% of claims exceeding those levels depending on the coverage year and the state in which business was written. Large professional liability

46

risks that are above the limits of our basic reinsurance treaties are reinsured on a facultative basis, whereby the reinsurer agrees to insure a particular risk up to a designated limit. We also have in place a number of risk sharing arrangements that apply to the first $1 million of losses for certain large healthcare systems and other insurance entities. Medical technology and life sciences products coverages are separately reinsured; subsequent to 2010, retention has been 100% on the first $1 million of coverage and between 20% and 33% of coverage exceeding those levels.

There are also in place various older reinsurance contracts acquired as a part of business combinations. The structure of these acquired arrangements typically reflects a lower retention level than our excess of loss reinsurance arrangements.

Within our Workers' Compensation segment, our traditional business is reinsured under an excess of loss arrangement under which the Company retains the first $500,000 on each loss occurrence. Loss occurrences in excess of $500,000 are covered up to a maximum of $149.5 million per occurrence.

Over 90% of the alternative market business within our Workers' Compensation segment is fully reinsured under 100% quota share agreements to the SPC's of our wholly owned subsidiary, Eastern Re Ltd., SPC (Eastern Re), domiciled in the Cayman Islands, net of a ceding commission. Each SPC has preferred shareholders and the underwriting profit or loss of each cell accrues fully to these preferred shareholders. We participate as a preferred shareholder in certain SPC's. Our ownership interest in the segregated portfolio cells for which we participate is generally 50%, but we have ownership interests as low as 25% and as high as 82.5%. Each SPC has in place its own reinsurance arrangements:

• Each cell has an aggregate excess reinsurance agreement with another of our insurance subsidiaries. This agreement provides for cession of 100% of losses of the cell which exceed a specified attachment point (typically 89% of premiums assumed), up to a maximum of $100,000.

• For losses that exceed the attachment point, each segregated portfolio cell further purchases two types of external reinsurance coverage:

• Per occurrence reinsurance agreements cover each SPC for a catastrophic claim resulting from one event with respect to its SPC business. The specific retentions for per occurrence coverage for an SPC range from $300,000 to $350,000, with limits of approximately $149.5 million. For example, in the case of an SPC with a $300,000 retention that has a $3.0 million claim relating to the injury and/or death of a covered employee, the SPC would cover the first $300,000 of the claim with the third party reinsurer paying the remaining $2.7 million in claims.

• Aggregate reinsurance agreements cover each SPC for losses and LAE beyond the $100,000 aggregate coverage provided by us. The need for this coverage would arise in the event of a series of losses as opposed to a single, catastrophic event. Aggregate reinsurance coverage purchased through external reinsurers has ultimate loss limits of $1.0 million or $2.0 million, depending on the underlying risks. This external reinsurance combined with the aggregate coverage provided by us provides aggregate loss limits for each segregated portfolio cell ranging from $1.1 million to $2.1 million.

Each SPC maintains a loss fund for the cell initially equal to the difference between premium assumed by the cell and the ceding commission. The external participants of each cell provide a letter of credit to us that is equal to the difference between the loss fund (amount of funds available to pay losses after deduction of ceding commission) and the aggregate attachment point of the reinsurance.

Within our Lloyd's Syndicate segment, Syndicate 1729 purchases reinsurance to limit its liability on individual risks and to protect against catastrophic loss. The level of reinsurance that the Syndicate purchases is dependent on a number of factors, including its underwriting risk appetite for catastrophe risk, the specific risks inherent in each line or class of business risk written and the pricing, coverage and terms and conditions available from the reinsurance market. Both quota share reinsurance and excess-of-loss reinsurance is utilized to manage the net loss exposure. The Syndicate may still be exposed to loss that exceeds the level of reinsurance purchased, as well as to reinstatement premiums triggered by additional loss events.

For all of our segments, we make a determination of the amount of insurance risk we choose to retain based upon numerous factors, including our risk tolerance and the capital we have to support it, the price and availability of reinsurance, the volume of business, our level of experience with a particular set of claims and our analysis of the potential underwriting results. We purchase reinsurance from a number of companies to mitigate concentrations of credit risk. We utilize a reinsurance broker to assist us in the placement of our reinsurance program and in the analysis of the credit quality of our reinsurers. The determination of which reinsurers we choose to do business with is based upon an evaluation of their then-current financial strength, rating and stability. However, the financial strength of our reinsurers, and their corresponding ability to pay us, may change in the future due to forces or events we cannot control or anticipate.

Taxes

In 2013 we received a Notice of Proposed Adjustment (NOPA) from the IRS related to the examination of our 2009 and 2010 tax years. We subsequently protested certain issues in the NOPA, all of which related to the timing of deductions, and also

47

made a related $20.6 million protective payment. In April 2014, we reached a final settlement with the IRS on all contested issues, which did not increase our tax liability. We received refunds from the IRS related to the NOPA in July 2014 of $30.6 million in total, exclusive of interest, which included a refund from the settlement of non-contested issues addressed by the NOPA and the return of the protective payment.

Litigation

We are involved in various legal actions related to insurance policies and claims handling including, but not limited to, claims asserted against us by policyholders. These types of legal actions arise in the ordinary course of business and, in accordance with GAAP for insurance entities, are generally considered as a part of our loss reserving process, which is described in detail in our Critical Accounting Estimates section under the heading "Reserve for Losses and Loss Adjustment Expenses." We also have other direct actions against the Company unrelated to our claims activity which we evaluate and account for as a part of our other liabilities. For these corporate legal actions, we evaluate each case separately and establish what we believe is an appropriate reserve based on GAAP guidance related to contingent liabilities. As of September 30, 2014 there were no material reserves established for corporate legal actions.

48

Investing Activities and Related Cash Flows

Investment Exposures - The following table provides summarized information regarding our investments as of September 30, 2014:

			Included in Carrying Value:
($ in thousands)	Carrying Value		Unrealized Gains		Unrealized Losses		Average Rating	(1)	% Total Investments
Fixed Maturities
Government
U.S. Treasury	$	176,813	$	4,396	$	1,215	AA+	(2)	4	%
U.S. Government-sponsored enterprise	43,966		1,709		223		AA+	(2)	1	%
Total government	220,779		6,105		1,438		AA+	(2)	5	%
State and Municipal Bonds
Pre-refunded	152,738		5,990		47		AA		4	%
General obligation	281,360		13,882		83		AA		7	%
Special revenue	653,536		30,183		569		AA		16	%
Total state and municipal bonds	1,087,634		50,055		699		AA		27	%
Corporate Debt
Financial institutions	430,075		12,988		1,161		A		11	%
Consumer oriented	303,638		10,869		2,353		BBB+		7	%
Utilities/Energy	296,918		11,767		2,636		BBB+		7	%
Industrial	418,523		12,944		3,004		BBB+		10	%
Other	23,831		326		21		AA		1	%
Total corporate debt	1,472,985		48,894		9,175		A-		36	%
Securities backed by:
Agency mortgages	279,755		8,778		1,069		AA+	(2)	7	%
Non-agency mortgages	10,559		39		151		AA+		<1%
Agency commercial mortgages	16,893		172		64		AA+	(2)	<1%
Other commercial mortgages	57,323		1,587		117		AAA		1	%
Automobile loans	49,845		73		66		AAA		1	%
Other asset loans	51,047		273		103		AA+		1	%
Total asset-backed securities	465,422		10,922		1,570		AAA		11	%
Total fixed maturities	3,246,820		115,976		12,882		A+		80	%
Equities
Financial	75,141		—		—				2	%
Utilities/Energy	26,551		—		—				1	%
Industrial	54,912		—		—				1	%
Consumer oriented	64,912		—		—				2	%
Bond funds	53,178		—		—				1	%
All Other	31,937		—		—				1	%
Total equities	306,631		—		—				8	%
Short-Term	94,973		—		—				2	%
Business-owned life insurance	55,918		—		—				1	%
Investment in Unconsolidated Subsidiaries
Investment in tax credit partnerships	137,386		—		—				3	%
Equity method LPs/LLCs	117,576		—		—				3	%
Total investment in unconsolidated subsidiaries	254,962		—		—				6	%
Other Investments
Investments in LPs, carried at cost	57,607		—		—				1	%
Convertible securities, at fair value	30,058		—		—				1	%
FHLB capital stock and other	4,345		—		—				<1%
Total other investments	92,010		—		—				2	%
Total Investments	$	4,051,314	$	115,976	$	12,882			100	%

(1) A weighted average rating is calculated using available ratings from Standard & Poor’s, Moody’s and Fitch. The table presents the Standard & Poor’s rating that is equivalent to the computed average.

(2) The rating presented is the Standard & Poor’s rating rather than the average. The Moody’s rating is Aaa and the Fitch rating is AAA.

49

A detailed listing of our investment holdings as of September 30, 2014 is presented in an Investor Supplement we make available in the Investor Relations section of our website, www.proassurance.com, or directly at www.proassurance.com/investorrelations/supplemental.aspx.

We manage our investments to ensure that we will have sufficient liquidity to meet our obligations, taking into consideration the timing of cash flows from our investments, including interest payments, dividends and principal payments, as well as the expected cash flows to be generated by our operations. In addition to the interest and dividends we will receive, we anticipate that between $80 million and $140 million of our investments will mature (or be paid down) each quarter of the next year and become available, if needed, to meet our cash flow requirements. The primary outflow of cash at our insurance subsidiaries is related to paid losses and operating costs, including income taxes. The payment of individual claims cannot be predicted with certainty; therefore, we rely upon the history of paid claims in estimating the timing of future claims payments. To the extent that we may have an unanticipated shortfall in cash we may either liquidate securities or borrow funds under existing borrowing arrangements through our credit facility and the FHLB system. Currently, $200 million is available for use through our credit facility, as discussed in this section under the heading "Debt." Given the duration of our investments, we do not foresee a shortfall that would require us to meet operating cash needs through additional borrowings. Additional information regarding the credit facility is detailed in Note 9 of the Notes to Condensed Consolidated Financial Statements.

Our investment portfolio continues to be primarily composed of high quality fixed income securities with approximately 93% of our fixed maturities being investment grade securities as determined by national rating agencies. The weighted average effective duration of our fixed maturity securities at September 30, 2014 was 3.6 years; the weighted average effective duration of our fixed maturity securities combined with our short-term securities was 3.5 years.

Our acquisition of Eastern added the following to our investment holdings as of January 1, 2014, the date of acquisition:

(In thousands)
Fixed maturities	$	107,131
Equities	65,945
Short-Term	23,931
Equity Method LPs/LLCs	11,994
Convertible Securities	30,139
Total	$	239,140

As discussed under the heading "Business Combinations and Ventures" and in Note 4 of the Notes to Condensed Consolidated Financial Statements, our fixed maturity and short term investments include securities deposited with Lloyd's in order to meet our FAL requirement. At September 30, 2014 securities on deposit with Lloyd's included fixed maturities having a fair value of $71.5 million and short term investments with a fair value of $5.7 million.

The carrying value of our tax credit partnerships was approximately $137.4 million at September 30, 2014 and $142.2 million at December 31, 2013. Carrying value reflects our total commitments (both funded and unfunded) to the partnerships, less amortization, since our initial investment. We fund these investments based on funding schedules maintained by the partnerships. During the nine months endedSeptember 30, 2014 and 2013 we funded approximately $8.4 million and $58.8 million, respectively. As of September 30, 2014, approximately $15.7 million of our total commitments to the tax credit partnerships had not yet been funded.

At September 30, 2014 and December 31, 2013 the total carrying value of our investment fund LPs/LLCs was approximately $175.2 million and $119.3 million, respectively, all of which has been funded. During the nine months endedSeptember 30, 2014 and 2013, we funded investment LPs/LLCs, net of capital returned, in the amount of $35.2 million and $8.4 million, respectively. As of September 30, 2014, we had active commitments to investment fund LPs/LLCs of approximately $149.0 million that had not yet been funded. The unfunded commitments will be paid over a period of approximately 5 years as requested by the fund managers.

Business Combinations and Ventures

We acquired 100% of the outstanding common shares of Eastern on January 1, 2014 for cash totaling $205 million. Funds for the transaction were deposited with an intermediate third-party several days prior to the close date. Additional information related to our acquisition of Eastern is detailed in Note 2 of the Notes to Condensed Consolidated Financial Statements.

Late in 2013, we became a Lloyd's member and a primary (58%) capital provider to Syndicate 1729, which began active operations effective January 1, 2014. We are required to provide capital, referred to as FAL, to support Syndicate 1729. As of December 31, 2013, we met the FAL requirements through a fully secured standby letter of credit (LOC) (£41.9 million or approximately $69.3 million at December 31, 2013) and a deposit of approximately $8.7 million (included in Other assets at December 31, 2013). During the first quarter of 2014 we elected to begin satisfying the FAL requirement by placing securities

50

on deposit with Lloyd's (see "Investment Exposures"). We subsequently canceled the LOC and our deposit was returned. Funds which had secured the LOC (classified as restricted cash at December 31, 2013) were also returned to us during the first quarter of 2014. We anticipate our FAL requirement for the 2015 underwriting year will be approximately £50.9 million, which would require us to fund an additional £5.8 million (approximately $9.8 million if funded with U.S. currency) during 2014. As discussed in Note 8 of the Notes to Condensed Consolidated Financial Statements, we have agreed to provide Syndicate 1729 with operating funds of up to £10 million (approximately $16 million at September 30, 2014) under an unconditional revolving credit agreement (the Credit Agreement). As of September 30, 2014, we had advanced £5.5 million ($9.2 million) to Syndicate 1729 under the Credit Agreement.

Financing Activities and Related Cash Flows

Treasury Shares

We repurchased approximately 3.7 million common shares, having a total cost of approximately $167.2 million, during the nine months endedSeptember 30, 2014 (including approximately 1.0 million shares at a total cost of $45.0 million during the three months endedSeptember 30, 2014). During the nine months endedSeptember 30, 2013 we repurchased approximately 0.2 million shares, having a total cost of approximately $8.0 million, all in the third quarter period. In May 2014 our Board increased its authorization for the repurchase of common shares or the retirement of outstanding debt by $100 million. Subsequent to September 30, 2014, through our 10b5-1 plan, we reacquired an additional 551,000 common shares at a cost of approximately $24.8 million. As of October 31, 2014 our remaining Board authorization was approximately $111.9 million.

Shareholder Dividends

Our Board of Directors declared cash dividends of $0.30 per share during each of the first three quarters of 2014 and $0.25 per share during each of the first three quarters of 2013. During the nine months endedSeptember 30, 2014 we paid the dividends declared in first and second quarters of 2014, as well as the dividends declared in the fourth quarter of 2013. During the nine months endedSeptember 30, 2013 we paid only the 2013 first and second quarter dividends as payment of the dividends declared in fourth quarter 2012 was accelerated to December 2012. Any decision to pay future cash dividends is subject to the Board’s final determination after a comprehensive review of financial performance, future expectations and other factors deemed relevant by the Board.

Debt

At September 30, 2014 our long-term debt consisted of $250 million of outstanding unsecured senior notes. The notes bear interest at 5.3% annually and are due in 2023 although they may be redeemed in whole or part prior to maturity. There are no financial covenants associated with these notes.

We have a revolving credit agreement (the Agreement) which allows us to borrow up to $200 million for general corporate purposes, including, but not limited to, short-term working capital, share repurchases as authorized by the Board, and support for other activities we enter into in the normal course of business. The Agreement expires in April 2016. No borrowings have been outstanding under the Agreement during 2014. We are in compliance with the financial covenants of the Agreement.

Additional information regarding our long-term debt is provided in Note 9 of the Notes to Condensed Consolidated Financial Statements.

We are a member of a number of FHLBs. Through membership, we have access to secured cash advances which can be used for liquidity purposes or other operational needs. To date, we have not established a FHLB line of credit or materially utilized our membership.

51

Results of Operations – Three and Nine Months EndedSeptember 30, 2014 Compared to Three and Nine Months EndedSeptember 30, 2013

Selected consolidated financial data for each period is summarized in the table below.

	Three Months Ended September 30									Nine Months Ended September 30
($ in thousands, except per share data)	2014			2013			Change			2014			2013			Change
Revenues:
Net premiums written	$	200,909		$	157,641		$	43,268		$	568,575		$	417,813		$	150,762
Net premiums earned	$	177,028		$	133,598		$	43,430		$	525,061		$	398,528		$	126,533
Net investment result	33,128			33,584			(456		)	95,555			95,782			(227		)
Net realized investment gains (losses)	(8,131		)	12,500			(20,631		)	7,659			47,650			(39,991		)
Other income	1,808			1,804			4			6,055			5,305			750
Total revenues	203,833			181,486			22,347			634,330			547,265			87,065
Expenses:
Losses and loss adjustment expenses	106,486			65,619			40,867			306,591			203,885			102,706
Reinsurance recoveries	(7,264		)	(3,982		)	(3,282		)	(18,948		)	(14,013		)	(4,935		)
Net losses and loss adjustment expenses	99,222			61,637			37,585			287,643			189,872			97,771
Underwriting, policy acquisition and operating expenses	54,185			33,348			20,837			158,856			105,592			53,264
Segregated portfolio cells dividend expense	(483		)	—			(483		)	2,355			—			2,355
Interest expense	3,606			322			3,284			10,697			1,085			9,612
Total expenses	156,530			95,307			61,223			459,551			296,549			163,002
Gain on acquisition	—			494			(494		)	—			35,986			(35,986		)
Income before income taxes	47,303			86,673			(39,370		)	174,779			286,702			(111,923		)
Income taxes	12,525			23,316			(10,791		)	43,328			60,044			(16,716		)
Net income	$	34,778		$	63,357		$	(28,579	)	$	131,451		$	226,658		$	(95,207	)
Operating income	$	40,131		$	54,800		$	(14,669	)	$	126,020		$	159,746		$	(33,726	)
Earnings per share:
Basic	$	0.59		$	1.02		$	(0.43	)	$	2.20		$	3.67		$	(1.47	)
Diluted	$	0.59		$	1.02		$	(0.43	)	$	2.19		$	3.65		$	(1.46	)
Operating earnings per share:
Basic	$	0.68		$	0.89		$	(0.21	)	$	2.11		$	2.59		$	(0.48	)
Diluted	$	0.68		$	0.88		$	(0.20	)	$	2.10		$	2.57		$	(0.47	)
Net loss ratio	56.0		%	46.1		%	9.9			54.8		%	47.6		%	7.2
Underwriting expense ratio	30.6		%	25.0		%	5.6			30.3		%	26.5		%	3.8
Combined ratio	86.6		%	71.1		%	15.5			85.1		%	74.1		%	11.0
Operating ratio	68.1		%	45.7		%	22.4			67.4		%	49.2		%	18.2
Effective tax rate	26.5		%	26.9		%	(0.4		)	24.8		%	20.9		%	3.9
Return on equity*	5.9		%	10.7		%	(4.8		)	7.4		%	10.9		%	(3.5		)

* Annualized. Gain on acquisition is excluded from this calculation.

In all tables that follow, the abbreviation "nm" indicates that the information or the percentage change is not meaningful.

52

Revenues

Our consolidated net premiums earned were as follows:

	Three Months Ended September 30									Nine Months Ended September 30
($ in thousands)	2014		2013		Change					2014		2013		Change
Net Premiums Earned
Specialty P&C	$	123,791	$	133,598	$	(9,807	)	(7.3	%)	$	374,704	$	398,528	$	(23,824	)	(6.0	%)
Workers' Compensation	49,792		—		49,792			nm		143,960		—		143,960			nm
Lloyd's Syndicate	3,445		—		3,445			nm		6,397		—		6,397			nm
Consolidated total	$	177,028	$	133,598	$	43,430		32.5	%	$	525,061	$	398,528	$	126,533		31.8	%

Consolidated net premiums earned increased in 2014 as compared to 2013 primarily due to the contribution of our recently acquired Workers' Compensation segment. The decline in net premiums earned for our Specialty P&C segment was primarily attributable to the pro-rata effect of lower physician premiums written during the preceding twelve months and also reflected an increase in ceded premiums earned. Given the start-up nature of Syndicate 1729 it added only $3.4 million and $6.4 million in net premiums earned for the 2014three- and nine-month periods, respectively (as compared to net written premium of $3.9 million and $24.2 million for the three- and nine-month periods, respectively).

Our net investment result (which includes both net investment income and earnings from unconsolidated subsidiaries) decreased $0.5 million or 1.4% for the 2014three-month period and decreased $0.2 million or 0.2% for the 2014nine-month period. Net investment income decreased during the 2014three- and nine-month periods primarily due to reduced earnings on our fixed income portfolio, which was partially offset by increased earnings from our other invested assets. Earnings from unconsolidated subsidiaries increased $0.6 million in the 2014three-month period and increased $6.3 million in the 2014nine-month period, primarily reflecting increased earnings from investment LPs. Amortization from tax credit partnerships was higher for the 2014 three-month period, but lower for the 2014 nine-month period.

Net realized investment gains (losses) decreased $20.6 million and $40.0 million for the 2014three- and nine-month periods, respectively, as compared to 2013. The changes primarily relate to trading securities which are carried at fair value. Net impairments were approximately $1.2 million in both the 2014three- and nine-month periods and nominal in both the 2013three- and nine-month periods.

Expenses

The following table shows our net loss ratio by segment:

	Three Months Ended September 30									Nine Months Ended September 30
($ in millions)	2014			2013			Change			2014			2013			Change
Current accident year net loss ratio
Consolidated ratio	80.3		%	83.1		%	(2.8		)	80.2		%	83.0		%	(2.8		)
Specialty P&C	85.6		%	83.1		%	2.5			85.8		%	83.0		%	2.8
Workers' Compensation	67.6		%	—		%	nm			65.9		%	—		%	nm
Lloyd's Syndicate	73.6		%	—		%	nm			68.9		%	—		%	nm
Calendar year net loss ratio
Consolidated ratio	56.0		%	46.1		%	9.9			54.8		%	47.6		%	7.2
Specialty P&C	51.4		%	46.1		%	5.3			51.0		%	47.6		%	3.4
Workers' Compensation	66.4		%	—		%	nm			63.9		%	—		%	nm
Lloyd's Syndicate	73.6		%	—		%	nm			68.9		%	—		%	nm
Favorable net loss development, prior accident years
Consolidated	$	42.9		$	49.4		$	(6.5	)	$	133.3		$	141.0		$	(7.7	)
Specialty P&C	$	42.3		$	49.4		$	(7.1	)	$	130.4		$	141.0		$	(10.6	)
Workers' Compensation	$	0.6		$	—		nm			$	2.9		$	—		nm
Lloyd's Syndicate	$	—		$	—		nm			$	—		$	—		nm

53

The decrease in our consolidated current accident year net loss ratio for the 2014three- and nine-month periods was primarily attributable to the addition of our workers' compensation business. The start-up of Syndicate 1729 during 2014 had only a nominal effect on the consolidated ratio. Combined, these new operations decreased our 2014 consolidated current accident year net loss ratio by 5.3 percentage points for the three-month period and 5.6 percentage points for the nine-month period. The current accident year net loss ratio of our Specialty P&C segment (our historical business) reflected an increase primarily attributable to a higher accrual for internal claims adjustment expenses on a lower volume of premiums earned and additional administrative claims costs now recognized on a more timely, quarterly basis.

Our consolidated calendar year net loss ratio is lower than our consolidated current accident year net loss ratio due to the recognition of net favorable loss development in our Specialty P&C and Workers' Compensation segments as shown in the table above.

Our underwriting expense ratio reflected the following:

	Three Months Ended September 30					Nine Months Ended September 30
	2014		2013		Change	2014		2013		Change
Underwriting Expense Ratio, as reported
Consolidated	30.6	%	25.0	%	5.6	30.3	%	26.5	%	3.8
Underwriting Expense Ratio, excluding the effect of discrete events, and Syndicate 1729
Consolidated	27.7	%	24.4	%	3.3	27.8	%	25.3	%	2.5
Specialty P&C	25.9	%	22.8	%	3.1	25.6	%	23.5	%	2.1
Workers' Compensation	29.4	%	—	%	nm	29.6	%	—	%	nm

Our consolidated expense ratio increased in 2014 due to a number of factors, including the acquisition of Eastern and additional expenses associated with our participation in Syndicate 1729. The ratios for both 2014 and 2013 were also impacted by expenses attributable to discrete events, such as the effect of purchase accounting on deferred policy acquisition cost amortization, transaction and other costs associated with business combinations or expansions, and costs associated with technology initiatives. Exclusive of expenses attributable to discrete events, we estimate that the addition of our workers' compensation business, which carries a higher expense ratio, increased our 2014 consolidated expense ratio by approximately 0.3 and 0.4 percentage points for the 2014three- and nine-month periods, respectively. We estimate that the Lloyd's Syndicate segment, which had a high expense ratio due to its start-up phase, increased our consolidated expense ratio by approximately 0.9 and 0.8 percentage points for the 2014three- and nine-month periods, respectively.

Exclusive of the effect of discrete events, the increase in our Specialty P&C segment ratio principally reflects the effects of higher compensation costs and a lower premium base. Approximately 2.6 and 2.7 percentage points of the Workers' Compensation segment expense ratio for the 2014three- and nine-month periods, respectively, was attributable to the amortization of intangible assets recognized in the acquisition of Eastern.

Taxes

Our effective tax rate was 26.5% for the 2014three-month period, a 0.4 percentage point decrease as compared to the 2013three-month period, and was 24.8% for the 2014nine-month period, a 3.9 percentage point increase as compared to the 2013nine-month period. The increase for the nine-month period principally reflects a reduction to our effective tax rate in 2013 due to a gain on acquisition that was not taxable.

54

Operating Ratio and Return on Equity

Our operating ratio (calculated as our combined ratio, less our investment income ratio) increased by 22.4 percentage points in the 2014three-month period and increased by 18.2 percentage points in the 2014nine-month period, reflecting higher net loss and expense ratios, and a decline in our investment ratio of 6.9 percentage points and 7.2 percentage points for the three- and nine-month periods, respectively, primarily due to the acquisition of Eastern. Compared to our professional liability business, workers' compensation generally requires lower reserves which necessitates lower investment assets to support those reserves in proportion to earned premium.

Return on equity (ROE) was 5.9% and 7.4% for the 2014three- and nine-month periods, respectively, and was 10.7% and 10.9% for the same respective periods of 2013. Our calculation of return on equity for the 2013three- and nine-month periods excluded the effect of the $0.5 million and $36.0 million gain on acquisition, respectively.

Book Value per Share

Our book value per share at September 30, 2014 as compared to December 31, 2013 is shown in the following table. The past growth rates of our book value per share do not necessarily predict similar future results.

	Book Value Per Share
Book Value Per Share at December 31, 2013	$	39.13
Increase (decrease) to book value per share during the nine months ended September 30, 2014 attributable to:
Net income	2.20
Increase in accumulated other comprehensive income	0.12
Dividends declared	(0.90		)
Other, primarily the repurchase of shares	(0.31		)
Book Value Per Share at September 30, 2014	$	40.24

55

Non-GAAP Financial Measures

Operating income is a non-GAAP financial measure that is widely used to evaluate performance within the insurance sector. In calculating operating income, we have excluded the after-tax effects of net realized investment gains or losses, guaranty fund assessments or recoupments, gain on acquisition and the effect of confidential settlements that do not reflect normal operating results. We believe operating income presents a useful view of the performance of our insurance operations, but should be considered in conjunction with net income computed in accordance with GAAP.

The following table is a reconciliation of Net income to Operating income:

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands, except per share data)	2014			2013			2014			2013
Net income	$	34,778		$	63,357		$	131,451		$	226,658
Items excluded in the calculation of operating income:
Net realized investment (gains) losses	8,131			(12,500		)	(7,659		)	(47,650		)
Guaranty fund assessments (recoupments)	104			95			147			71
Gain on acquisition	—			(494		)	—			(35,986		)
Effect of confidential settlements, net	—			—			(843		)	—
Pre-tax effect of exclusions	8,235			(12,899		)	(8,355		)	(83,565		)
Tax effect, at 35%, exclusive of non-taxable gain on acquisition	(2,882		)	4,342			2,924			16,653
Operating income	$	40,131		$	54,800		$	126,020		$	159,746
Per diluted common share:
Net income	$	0.59		$	1.02		$	2.19		$	3.65
Effect of exclusions	0.09			(0.14		)	(0.09		)	(1.08		)
Operating income per diluted common share	$	0.68		$	0.88		$	2.10		$	2.57

Note: The 35% rate above is the annual expected incremental tax rate associated with the taxable or tax deductible items listed. We record the provision for income taxes in our interim financial statements based upon our estimated annual effective tax rate.

56

Segment Operating Results - Specialty Property & Casualty

Our Specialty P&C segment focuses on professional liability insurance and medical technology and life sciences products liability insurance as discussed in Note 13 of the Notes to Condensed Consolidated Financial Statements. Specialty P&C segment operating results reflect pre-tax underwriting profit or loss from these insurance lines, exclusive of investment results, which are included in our Corporate segment. Segment operating results for the three and nine months endedSeptember 30, 2014 were $27.4 million and $86.6 million, respectively, as compared to $42.5 million and $116.7 million for the same respective periods of 2013, and included the following:

	Three Months Ended September 30											Nine Months Ended September 30
($ in thousands)	2014			2013			Change					2014			2013			Change
Net premiums written	$	142,733		$	157,641		$	(14,908	)	(9.5	%)	$	379,428		$	417,813		$	(38,385	)	(9.2	%)
Net premiums earned	$	123,791		$	133,598		$	(9,807	)	(7.3	%)	$	374,704		$	398,528		$	(23,824	)	(6.0	%)
Net losses and loss adjustment expenses	$	63,639		$	61,637		$	2,002		3.2	%	$	191,263		$	189,872		$	1,391		0.7	%
Underwriting, policy acquisition and operating expenses	$	33,814		$	30,708		$	3,106		10.1	%	$	101,044		$	95,907		$	5,137		5.4	%
Net loss ratio	51.4		%	46.1		%	5.3					51.0		%	47.6		%	3.4
Underwriting expense ratio	27.3		%	23.0		%	4.3					27.0		%	24.1		%	2.9

Premiums Written

Changes in our premium volume within our Specialty P&C segment are driven by four primary factors: (1) the amount of new business, (2) our retention of existing business, (3) the premium charged for business that is renewed, which is affected by rates charged and by the amount and type of coverage an insured chooses to purchase, and (4) the timing of premium written through multi-period policies. In addition, premium volume may periodically be affected by shifts in the timing of renewals between periods. The healthcare professional liability market, which accounts for a majority of the revenues in this segment, remains challenging as physicians continue joining hospitals or larger group practices and are thus no longer purchasing insurance in the standard market. In addition, some competitors have chosen to compete primarily on price; both factors impact our ability to write new business and retain existing business.

Gross, ceded and net premiums written were as follows:

	Three Months Ended September 30											Nine Months Ended September 30
($ in thousands)	2014			2013			Change					2014			2013			Change
Gross premiums written	$	163,134		$	165,794		$	(2,660	)	(1.6	%)	$	429,730		$	451,819		$	(22,089	)	(4.9	%)
Ceded premiums written	(20,401		)	(8,153		)	(12,248		)	<(100%)		(50,302		)	(34,006		)	(16,296		)	(47.9	%)
Net premiums written	$	142,733		$	157,641		$	(14,908	)	(9.5	%)	$	379,428		$	417,813		$	(38,385	)	(9.2	%)

57

Gross Premiums Written

Gross premiums written by component were as follows:

	Three Months Ended September 30									Nine Months Ended September 30
($ in thousands)	2014		2013		Change					2014		2013		Change
Professional liability
Physicians (1):
Twelve month term	$	115,698	$	118,347	$	(2,649	)	(2.2	%)	$	289,533	$	310,880	$	(21,347	)	(6.9	%)
Twenty-four month term	5,311		7,720		(2,409		)	(31.2	%)	17,648		22,865		(5,217		)	(22.8	%)
Total Physicians	121,009		126,067		(5,058		)	(4.0	%)	307,181		333,745		(26,564		)	(8.0	%)
Other healthcare providers (2)	10,203		10,381		(178		)	(1.7	%)	26,458		25,852		606			2.3	%
Healthcare facilities (3)	9,291		6,195		3,096			50.0	%	28,932		27,106		1,826			6.7	%
Legal professionals (4)	7,097		6,984		113			1.6	%	23,095		22,174		921			4.2	%
Tail coverages (5)	4,630		5,884		(1,254		)	(21.3	%)	15,132		16,467		(1,335		)	(8.1	%)
Total professional liability	152,230		155,511		(3,281		)	(2.1	%)	400,798		425,344		(24,546		)	(5.8	%)
Medical technology and life sciences products liability (6)	10,473		9,759		714			7.3	%	27,561		25,040		2,521			10.1	%
Other	431		524		(93		)	(17.7	%)	1,371		1,435		(64		)	(4.5	%)
Total	$	163,134	$	165,794	$	(2,660	)	(1.6	%)	$	429,730	$	451,819	$	(22,089	)	(4.9	%)

(1) Physician policies were our greatest source of premium revenues in both 2014 and 2013. We offer twenty-four month term policies to our physician insureds in one selected jurisdiction. The decline in twenty-four month premium, as compared to 2013, primarily reflects the normal cycle of renewals (policies subject to renewal in 2014 were previously written in 2012 rather than in 2013). There was no significant volume change associated with twenty-four month policies during the three- and nine-month periods of 2014.

(2) Our other healthcare providers are primarily dentists, chiropractors and allied health professionals.

(3) Our healthcare facilities premium (which includes hospitals, surgery centers and other facilities) increased in 2014, principally due to a shift in the timing of renewals between periods.

(4) Our legal professionals policies are offered throughout the United States, principally through agent and brokerage arrangements.

(5) We offer extended reporting endorsement or "tail" coverage to insureds who discontinue their claims-made coverage with us, and we also periodically offer "tail" coverage through custom policies. The amount of tail coverage premium written can vary widely from period to period.

(6) Our medical technology and life sciences products liability (products liability) business is marketed throughout the United States; coverage is offered on a primary basis, within specified limits, to manufacturers and distributors of medical technology and life sciences products. In addition to the previously listed factors that affect our premium volume, our products liability premium volume is impacted by the sales volume of insureds.

New business written by component was as follows:

	Three Months Ended September 30				Nine Months Ended September 30
(In millions)	2014		2013		2014		2013
Physicians	$	5.3	$	5.6	$	13.2	$	13.1
Other healthcare providers	$	0.9	$	0.8	$	2.3	$	1.9
Healthcare facilities	$	2.1	$	1.0	$	3.9	$	3.3
Legal professionals *	$	1.2	$	0.5	$	3.4	$	1.5
Medical technology and life sciences products liability *	$	1.4	nm		$	4.0	nm
* Excludes new business attributable to our Medmarc acquisition for the 2013 three- and nine-month periods, as the entire Medmarc book of business was new to us in 2013.

58

We calculate our retention rate as annualized renewed premium divided by all annualized premium subject to renewal. Retention rates are affected by a number of factors. We may lose insureds to competitors or to alternative insurance mechanisms such as risk retention groups or self-insurance entities (often when physicians join hospitals or large group practices) or due to pricing or other issues. We may choose not to renew an insured as a result of our underwriting evaluation. Insureds may also terminate coverage because they have left the practice of medicine for various reasons, principally for retirement but also for personal reasons or due to disability or death.

Retention by component is shown in the following table.

	Three Months Ended September 30				Nine Months Ended September 30
	2014		2013		2014		2013
Physicians, standard lines only	90	%	89	%	89	%	89	%
Other healthcare providers	85	%	85	%	81	%	82	%
Healthcare facilities	84	%	82	%	82	%	83	%
Legal professionals *	80	%	90	%	82	%	87	%
Medical technology and life sciences products liability *	83	%	nm		87	%	nm
* Premiums contributed by our Medmarc acquisition are excluded from the calculation of retention for the 2013 three- and nine-month periods, as the entire Medmarc book of business was new to us in 2013.

The pricing of our business includes the effects of filed rates, surcharges and discounts. We continue to base our pricing on expected losses, as indicated by our historical loss data and available industry loss data. We are committed to a rate structure that will allow us to fulfill our obligations to our insureds, while generating competitive returns for our shareholders. The pricing of our standard physician business averaged 2% higher during the 2014 three-month period and 1% higher during the 2014 nine-month period. Rate increases resulted in an increase in average pricing of 4% and 7% for our legal professionals business for the 2014 three- and nine-month periods, respectively, which, when combined with our choosing to be more selective in the coverages we insure, contributed to lower retention for the same respective periods.

59

Ceded Premiums Written

Ceded premiums represent the amounts owed to our reinsurers for their assumption of a portion of our losses. Through our current excess of loss reinsurance arrangements we retain the first $1 million in risk insured by us and cede any coverages in excess of this amount, and for our products liability coverages, we also retain 20% of the next $9 million of risk for coverages in excess of $1 million. We pay our reinsurers a ceding premium in exchange for their accepting the risk, the ultimate amount of which is determined by the loss experience of the business ceded, subject to certain minimum and maximum amounts.

Ceded premiums written for the three and nine months endedSeptember 30, 2014 and 2013 were comprised as follows:

	Three Months Ended September 30										Nine Months Ended September 30
($ in thousands)	2014			2013			Change				2014			2013			Change
Excess of loss reinsurance arrangements	$	8,382		$	7,657		$	725	9.5	%	$	24,406		$	22,867		$	1,539		6.7	%
Premium ceded to Syndicate 1729 (1)	4,974			—			4,974		nm		9,847			—			9,847			nm
Other shared risk arrangements (2)	7,837			2,132			5,705		>100%		19,319			15,987			3,332			20.8	%
Other ceded premiums written	2,365			2,039			326		16.0	%	6,870			7,157			(287		)	(4.0	%)
Reduction in premiums owed under reinsurance agreements, prior accident years, net (3)	(3,157		)	(3,675		)	518		14.1	%	(10,140		)	(12,005		)	1,865			15.5	%
Total ceded premiums written	$	20,401		$	8,153		$	12,248	>100%		$	50,302		$	34,006		$	16,296		47.9	%

(1) Effective January 1, 2014, one of our subsidiaries began ceding premium to Syndicate 1729 under a quota share agreement, net of a related ceding commission. As previously discussed, we are a 58% participant in Syndicate 1729 and record our pro rata share of its operating results in our Lloyd's Syndicate segment on a quarter delay. We also record the Specialty P&C segment results for this agreement on a quarter delay as the amounts are not material and this permits the cession to be reported by both the Lloyd's Syndicate segment and the Specialty P&C segment in the same reporting period. Premium ceded to Syndicate 1729 reported for the three- and nine-month periods of 2014 in the table above reflects cessions that occurred during the three- and six-months ended June 30, 2014, respectively. The related ceding commission income recorded as an offset to deferred policy acquisition costs for the three- and nine-month periods of 2014 was $1.3 million and $2.7 million, respectively. The third quarter cession of $11.1 million and the related ceding commission income of $3.0 million will be recorded in the fourth quarter of 2014. Eliminations of the inter-segment portion (58% of the Specialty P&C cession) of the transactions are also recorded on a quarter delay.

(2) We have entered into various shared risk arrangements, including quota share, fronting, and captive arrangements, with certain large healthcare systems and other insurance entities. These arrangements include our Ascension Health Certitude and CAPAssurance Programs. The increase in ceded premiums written under our shared risk arrangements for the 2014three- and nine-month periods principally reflected premiums ceded under arrangements begun after the third quarter of 2013. The increase for the 2014nine-month period was partially offset by decreases attributable to a shift in renewal period for one arrangement from the second quarter to the fourth quarter and a large policy under one of the arrangements that did not renew in 2014.

(3) Given the length of time that it takes to resolve our claims, many years may elapse before all losses recoverable under a reinsurance arrangement are known. As a part of the process of estimating our loss reserve we also make estimates regarding the amounts recoverable under our reinsurance arrangements. As previously discussed, the premiums ultimately ceded under our excess of loss reinsurance arrangements are subject to the losses ceded under the arrangements. In both 2014 and 2013, on a net basis, we reduced our estimate of expected losses and associated recoveries for prior year ceded losses, as well as our estimate of ceded premiums owed to reinsurers. Changes to estimates of premiums ceded related to prior accident years are fully earned in the period the change in estimates occur.

60

Ceded Premiums Ratio

As shown in the table below, our ceded premiums ratio was affected in both 2014 and 2013 by revisions to our estimate of premiums owed to reinsurers related to coverages provided in prior accident years.

	Three Months Ended September 30					Nine Months Ended September 30
	2014		2013		Change	2014		2013		Change
Ceded premiums ratio, as reported	12.5	%	4.9	%	7.6	11.7	%	7.5	%	4.2
Less the effect of reduction in premiums owed under reinsurance agreements, prior accident years (as previously discussed)	(1.9	%)	(2.2	%)	0.3	(2.4	%)	(2.7	%)	0.3
Ratio, current accident year	14.4	%	7.1	%	7.3	14.1	%	10.2	%	3.9

The remaining increase in the current accident year ceded premiums ratio for the three- and nine-month periods was primarily attributable to the increase in ceded premiums written under the quota share arrangement with Syndicate 1729 and our shared risk arrangements, as previously discussed. Additionally, premium volume from retained coverages was lower in 2014 than in 2013, which reduced gross premiums written but had no effect on ceded premiums written, and thus increased the ratio.

Net Premiums Earned

Net premiums earned were as follows:

	Three Months Ended September 30											Nine Months Ended September 30
($ in thousands)	2014			2013			Change					2014			2013			Change
Gross premiums earned	$	137,446		$	144,280		$	(6,834	)	(4.7	%)	$	410,814		$	428,784		$	(17,970	)	(4.2	%)
Ceded premiums earned	(13,655		)	(10,682		)	(2,973		)	(27.8	%)	(36,110		)	(30,256		)	(5,854		)	(19.3	%)
Net premiums earned	$	123,791		$	133,598		$	(9,807	)	(7.3	%)	$	374,704		$	398,528		$	(23,824	)	(6.0	%)

Net premiums earned consist of gross premiums earned less the portion of earned premiums that we cede to our reinsurers for their assumption of a portion of our losses. Because premiums are generally earned pro rata over the entire policy period, fluctuations in premiums earned tend to lag those of premiums written. Generally, our policies carry a term of one year, but as discussed above, we write certain policies with a twenty-four month term, and certain of our medical technology and life sciences products liability policies carry a multi-year term. Tail coverage premiums are generally 100% earned in the period written because the policies insure only incidents that occurred in prior periods and are not cancellable. Additionally, ceded premium changes due to changes to estimates of premiums owed under reinsurance agreements are fully earned in the period of change.

The decrease in gross premiums earned in 2014 primarily reflected the pro-rata effect of lower physician premiums written during the preceding twelve months, partially offset by an increase in premiums earned due to growth associated with our shared risk arrangements. The increase in premiums ceded during 2014 primarily reflects growth associated with certain shared risk arrangements that were either new in 2014 or not in effect for all of 2013 and premiums ceded under the quota share arrangement with Syndicate 1729. Also, for the 2014three- and nine-month periods, prior accident year ceded premiums reductions were $0.5 million and $1.9 million lower, respectively, than for the 2013three- and nine-month periods (see discussion under the heading "Ceded Premiums Written").

61

Losses and Loss Adjustment Expenses

The determination of calendar year losses involves the actuarial evaluation of incurred losses for the current accident year and the actuarial re-evaluation of incurred losses for prior accident years, including an evaluation of the reserve amounts required for losses in excess of policy limits.

Accident year refers to the accounting period in which the insured event becomes a liability of the insurer. For claims-made policies, which represent over 90% of the premiums written in our Specialty P&C segment, the insured event generally becomes a liability when the event is first reported to the insurer. For occurrence policies the insured event becomes a liability when the event takes place. We believe that measuring losses on an accident year basis is the best measure of the underlying profitability of the premiums earned in that period, since it associates policy premiums earned with the estimate of the losses incurred related to those policy premiums.

The following table summarizes calendar year net loss ratios by separating losses between the current accident year and all prior accident years. Additionally, the table shows our current accident year net loss ratio was significantly affected by revisions to our estimate of premiums owed to reinsurers related to coverages provided in prior accident years. Our current accident year net loss ratios for the three and nine months endedSeptember 30, 2014 and 2013 compare as follows:

	Net Loss Ratios (1)
	Three Months Ended September 30					Nine Months Ended September 30
	2014		2013		Change	2014		2013		Change
Calendar year net loss ratio	51.4	%	46.1	%	5.3	51.0	%	47.6	%	3.4
Less impact of prior accident years on the net loss ratio	(34.2	%)	(37.0	%)	2.8	(34.8	%)	(35.4	%)	0.6
Current accident year net loss ratio, as reported	85.6	%	83.1	%	2.5	85.8	%	83.0	%	2.8
Less estimated ratio increase (decrease) attributable to:
Ceded premium reductions, prior accident years (2)	(2.2	%)	(2.3	%)	0.1	(2.4	%)	(2.6	%)	0.2
Current accident year net loss ratio, excluding the effect of prior year ceded premium (3)	87.8	%	85.4	%	2.4	88.2	%	85.6	%	2.6

(1) Net losses as specified divided by net premiums earned.

(2) Reductions to premiums owed under reinsurance agreements for prior accident years increased net premiums earned (the denominator of the current accident year ratio) in both 2014 and 2013. See the discussion in the Premiums section for our Specialty P&C segment under the heading "Ceded Premiums Written" for additional information.

(3) The remaining increase in the current accident year net loss ratio reflects the effect of a higher accrual for internal claims adjustment expenses on a lower volume of premiums earned and additional costs for administrative claims now recognized on a more timely, quarterly basis rather than as part of the fourth quarter reserve review adjustment.

We recognized favorable loss development related to our previously established reserve, on a gross basis, of $47.8 million and $146.9 million during the three and nine months endedSeptember 30, 2014, respectively. On a net basis, we recognized favorable development of $42.3 million and $130.4 million during three and nine months endedSeptember 30, 2014, respectively. The net basis reflects the favorable development recognized with respect to our ceded coverage layers. We re-evaluate our previously established reserve each quarter based on our most recently available claims data and currently available industry trend information. Development recognized during the three and nine months endedSeptember 30, 2014 principally related to accident years 2007 through 2012.

We recognized favorable loss development related to our previously established reserve, on a gross basis, of $54.6 million and $158.1 million during the three and nine months endedSeptember 30, 2013, respectively. On a net basis, we recognized favorable development of $49.4 million and $141.0 million during the three and nine months endedSeptember 30, 2013, respectively. Development recognized during the 2013three- and nine-month periods principally related to accident years 2005 through 2011.

A detailed discussion of factors influencing our recognition of loss development recognized is included in our Critical Accounting Estimates section under the heading "Reserve for Losses and Loss Adjustment Expenses" and in our 2013 Form 10K under the same heading. Assumptions used in establishing our reserve are regularly reviewed and updated by management as new data becomes available. Any adjustments necessary are reflected in the then current operations. Due to the size of our reserve, even a small percentage adjustment to the assumptions can have a material effect on our results of operations for the period in which the change is made, as was the case in both 2014 and 2013.

62

Underwriting, Policy Acquisition and Operating Expenses

The table below provides a comparison of underwriting, policy acquisition and operating expenses for the three and nine months endedSeptember 30, 2014 and 2013:

	Three Months Ended September 30								Nine Months Ended September 30
($ in thousands)	2014		2013		Change				2014		2013		Change
Underwriting, policy acquisition and operating expenses	$	33,814	$	30,708	$	3,106	10.1	%	$	101,044	$	95,907	$	5,137	5.4	%

The following table highlights the more significant items affecting the comparability of expenses between 2014 and 2013:

	Expense Increase (Decrease) 2014 vs 2013
(In millions)	Three Months Ended September 30			Nine Months Ended September 30
Excluding the effect from purchase accounting (see below), the decrease in DPAC amortization primarily reflects the decline in premium volume and an increased amount of ceding commission income during 2014, partially offset by an increased amount of underwriting compensation costs capitalized beginning in the third quarter of 2013. The increase in ceding commission income, which is accounted for as an offset to DPAC amortization, reflected the 2014 increase in ceded premiums earned.	$	(0.9	)	$	(0.2	)
Costs associated with ongoing technology enhancement initiatives	0.1			0.9
Higher compensation costs. The three-month increase was primarily attributable to allocation adjustments made in the 2013 three-month period. The nine-month increase was primarily attributable to higher stock compensation costs in 2014 relative to a performance based plan.	1.3			1.2
Other variances not individually significant	1.2			0.3
Expenses associated with discrete events:
Amortization of deferred policy acquisition costs associated with entities acquired in 2013 increased in 2014. Application of GAAP purchase accounting rules lowered amortization recorded in 2013.	0.7			3.6
Transaction-related costs associated with entities acquired in 2013, principally professional fees and one time compensation costs	—			(1.4		)
Technology enhancement initiatives	0.7			0.7
Net change in expenses	$	3.1		$	5.1

63

Underwriting Expense Ratio (the Expense Ratio)

As shown in the following table, our expense ratio was affected in both 2014 and 2013 by ceded premium reductions related to prior accident years as discussed under the heading "Ceded Premiums Written," and by expenses associated with discrete events, as identified in the previous table.

	Underwriting Expense Ratio
	Three Months Ended September 30						Nine Months Ended September 30
	2014		2013		Change		2014		2013		Change
Underwriting expense ratio, as reported	27.3	%	23.0	%	4.3		27.0	%	24.1	%	2.9
Less estimated ratio increase (decrease) attributable to:
Net ceded premium reductions, prior accident years	(0.7	%)	(0.6	%)	(0.1	)	(0.7	%)	(0.7	%)	—
Expenses associated with discrete events (see table above)	1.4	%	0.2	%	1.2		1.4	%	0.6	%	0.8
Underwriting expense ratio, less listed effects	26.6	%	23.4	%	3.2		26.3	%	24.2	%	2.1

The remaining difference in our 2014 and 2013 expense ratios is attributable to the following:

	Increase (decrease), 2014 versus 2013
(In percentage points)	Comparative three-month periods	Comparative nine-month periods
Estimated ratio increase (decrease) attributable to:
Increase in compensation costs included in DPAC amortization, as previously discussed	0.5	0.9
Costs associated with ongoing technology enhancement initiatives	0.1	0.3
Higher compensation costs	1.0	0.3
Lower net premiums earned, partially offset by the effect of higher ceding commission income	0.7	0.6
Other variances not individually significant	0.9	—
Net increase/(decrease) in ratio	3.2	2.1

64

Segment Operating Results - Workers' Compensation

Our Workers' Compensation segment provides traditional workers' compensation insurance products to employers with 1,000 employees or fewer and alternative market solutions, as discussed in Note 13 to the Notes to Condensed Consolidated Financial Statements. Our Workers' Compensation operations are the primary business operations acquired through our purchase of Eastern in 2014. Segment operating results reflect pre-tax underwriting profit or loss, exclusive of investment results which are included in our Corporate segment. Segment operating results for the three and nine months endedSeptember 30, 2014 were $2.6 million and $4.8 million, respectively, and included the following:

	September 30, 2014
($ in thousands)	Three Months Ended			Nine Months Ended
Net premiums written	$	54,287		$	164,984
Net premiums earned	$	49,792		$	143,960
Net losses and loss adjustment expenses	$	33,046		$	91,975
Underwriting, policy acquisition and operating expenses	$	14,785		$	45,379
Segregated portfolio cell dividend expense	$	(483	)	$	2,355
Net loss ratio	66.4		%	63.9		%
Underwriting expense ratio	29.7		%	31.5		%

Premiums Written

Our workers’ compensation premium volume is driven by four primary factors: 1) the amount of new business written, 2) retention of our existing book of business, 3) premium rates charged on our renewal book of business, and 4) audit premium.

Gross, ceded and net premiums written for the three and nine months endedSeptember 30, 2014 were as follows:

	September 30, 2014
(In thousands)	Three Months Ended			Nine Months Ended
Gross premiums written	$	60,307		$	181,130
Ceded premiums written	(6,020		)	(16,146		)
Net premiums written	$	54,287		$	164,984

Gross Premiums Written

Gross premiums written in our traditional and alternative market business for the three and nine months endedSeptember 30, 2014 were as follows:

	September 30, 2014
(In thousands)	Three Months Ended		Nine Months Ended
Traditional business	$	46,666	$	136,752
Alternative market business	13,641		44,378
Gross premiums written	$	60,307	$	181,130

Our traditional workers’ compensation insurance products include guaranteed cost, dividend, deductible, and retrospectively-rated policies. Our alternative market business is ceded 100% to the segregated portfolio cells at our wholly owned Cayman Islands reinsurance subsidiary, Eastern Re, and an unaffiliated captive insurer. Additional information regarding the operations of the segregated portfolio cells is included in the Underwriting, policy acquisition and operating expense section below.

65

Gross premiums written for the three and nine months endedSeptember 30, 2014 reflected the following:

Our retention rate was approximately 85% and 83% for the 2014three- and nine-month periods, respectively, reflecting the impact of price competition in the marketplace. We calculate our workers' compensation retention rate as annualized renewed premium divided by all annualized premium subject to renewal.

The pricing of our renewed business averaged 2% higher than that of our expiring premium during both the 2014 three month period and the 2014 nine-month period. The pricing of our business includes an assessment of the underlying policy exposure and the effects of current market conditions. We continue to base our pricing on expected losses, as indicated by our historical loss data.

In addition to the effects of retention and renewal pricing factors discussed above, premium volume reflected new business of approximately $12.6 million and $36.4 million and audit premium of $2.2 million and $3.0 million for the three and nine months endedSeptember 30, 2014, respectively.

Ceded Premiums Written

Ceded premiums written reflect our external reinsurance programs and alternative market business ceded to an unaffiliated captive insurance company.

Ceded premiums written for three and nine months endedSeptember 30, 2014 were as follows:

	September 30, 2014
(In thousands)	Three Months Ended		Nine Months Ended
Premiums ceded to external reinsurers	$	4,502	$	12,396
Return premium estimate under external reinsurance	750		(213		)
Premiums ceded to unaffiliated captive insurers	768		3,963
Total ceded premiums written	$	6,020	$	16,146

We retain the first $0.5 million in risk insured by us and cede losses in excess of this amount on each loss occurrence under our primary external reinsurance contract. The external reinsurance contract contains a return premium provision under which we estimate return premium based on the underlying loss experience of policies covered under the contract. Changes in the return premium estimate reflect the loss experience under the reinsurance contract for the three and nine months endedSeptember 30, 2014. We cede 100% of premiums written under two alternative market programs to an unaffiliated captive insurer.

Ceded Premiums Ratio

	September 30, 2014
	Three Months Ended		Nine Months Ended
Ceded premiums ratio, as reported	10.0	%	8.9	%
Less the effect of:
Return premium estimated under external reinsurance	1.2	%	(0.1	%)
Premiums ceded to unaffiliated captive insurer (100%)	1.3	%	2.2	%
Ceded premiums ratio, less the effects of above	7.5	%	6.8	%

Ceded premiums under our primary external reinsurance contract represented 7.5% and 6.8% of gross premiums written for the three and nine months endedSeptember 30, 2014, respectively. We cede premiums related to our traditional business on an earned premium basis, whereas alternative market premiums are ceded on a written premium basis.

66

Net Premiums Earned

Net premiums earned for the three and nine months endedSeptember 30, 2014 were as follows:

	September 30, 2014
(In thousands)	Three Months Ended			Nine Months Ended
Gross premiums earned	$	56,690		$	159,955
Ceded premiums earned	(6,898		)	(15,995		)
Net premiums earned	$	49,792		$	143,960

Net premiums earned consist of gross premiums earned less the portion of earned premiums that we cede to our reinsurers for their assumption of a portion of our losses. Our workers’ compensation policies are twelve-month policies and premiums are earned on a pro-rata basis over the policy period. Net premiums earned also include premium adjustments related to the audit of our insureds' payrolls. Payroll audits are conducted subsequent to the end of the policy period and any related adjustments are recorded in the current period. In addition, we record an estimate for EBUB and evaluate the estimate on a quarterly basis. We increased the EBUB estimate by $0.8 million and $0.4 million during the three and nine months endedSeptember 30, 2014, respectively, and the impact of that change is included in Audit premium.

Losses and Loss Adjustment Expenses

The following table summarizes calendar year net loss ratios by separating losses between the current accident year and all prior accident years. The components of the calendar year loss ratio were as follows:

	Net Loss Ratios
	September 30, 2014
	Three Months Ended		Nine Months Ended
Calendar year net loss ratio	66.4	%	63.9	%
Less impact of prior accident years on the net loss ratio	(1.2	%)	(2.0	%)
Current accident year net loss ratio, as reported	67.6	%	65.9	%
Less impact of audit premium on loss ratio	(3.1	%)	(1.4	%)
Current accident year net loss ratio, excluding the effect of audit premium	70.7	%	67.3	%

The increase in the current accident year loss ratio for the three and nine months ended September 30, 2014 primarily reflects severity-related claims activity in the alternative market business.

We recorded favorable prior accident year development of $0.6 million and $2.9 million for three and nine months endedSeptember 30, 2014, respectively, related to our SPCs due to better than anticipated loss experience during 2014, and we also recognized amortization associated with the purchase accounting fair value adjustment. There were no prior accident year reserve adjustments related to our traditional business. We recognized audit premium from customers during 2014, which reduced the current accident year net loss ratio. Audit premium from customers results in a decrease in the net loss ratio, whereas audit premium returned to customers results in an increase in the net loss ratio.

Underwriting, Policy Acquisition and Operating Expenses

Underwriting, policy acquisition and operating expenses for the three and nine months endedSeptember 30, 2014 were $14.8 million and $45.4 million, respectively. These expenses include commissions, premium taxes, and underwriter salaries, which are capitalized and deferred over the related workers’ compensation policy period, net of ceding commissions earned. The capitalization of these costs can vary as they are subject to the success rate of our contract acquisition efforts.

The following table highlights certain discrete events affecting expenses in the 2014three- and nine-month periods:

	Expense Increase (Decrease)
	September 30, 2014
(In thousands)	Three Months Ended		Nine Months Ended
One-time professional fees	$	—	$	661
Transaction-related expenses	$	146	$	2,055

67

Underwriting Expense Ratio (the Expense Ratio)

Our expense ratio for the three and nine months endedSeptember 30, 2014, including the impact of audit premium and certain discrete items, was as follows:

	Underwriting Expense Ratio
	September 30, 2014
	Three Months Ended		Nine Months Ended
Underwriting expense ratio, as reported	29.7	%	31.5	%
Less estimated ratio increase (decrease) attributable to:
Transaction-related expenses	0.3	%	1.4	%
One-time professional fees	—	%	0.5	%
Amortization of intangible assets	2.6	%	2.7	%
Impact of return premium estimate	0.4	%	(0.1	%)
Impact of audit premium	(1.4	%)	(0.7	%)
Underwriting expense ratio, less listed effects	27.8	%	27.7	%

Segregated Portfolio Cell (SPC) Dividend Expense

Our Workers' Compensation segment provides turn-key workers' compensation alternative market solutions that include program design, fronting, claims administration, risk management, SPC rental, asset management and SPC management services. The asset management and SPC management services are outsourced to a third party. Alternative market customers include individual companies, groups and/or associations (known as SPC dividend participants). SPC dividend expense for each period represents the difference between total revenue and the sum of net losses and loss adjustment expenses and underwriting, policy acquisition and operating expenses attributable to the alternative market business ceded to the SPC's of Eastern Re, net of any participation we have taken in the SPC's.

The SPC's are segregated pools of assets and liabilities that provide an insurance facility for a defined set of risks. Assets of each SPC are solely for the benefit of that individual cell and each SPC is solely responsible for the liabilities of that individual cell. Assets of one SPC are statutorily protected from the creditors of the others. We participate to a varying degree in the results of selected SPC's. Our ownership interest in the SPC's in which we participate is generally 50%, but we have ownership interests as low as 25% and as high as 82.5%. Under the SPC structure, the net operating results of each cell, net of our participation, are due to the SPC participants of that cell.

SPC dividend expense for the three and nine months endedSeptember 30, 2014 was as follows:

	September 30, 2014
(In thousands)	Three Months Ended			Nine Months Ended
Segregated portfolio cell dividend expense before Eastern participation	$	(598	)	$	3,297
Eastern participation	$	115		$	(942	)
Segregated portfolio cell dividend expense	$	(483	)	$	2,355

68

Segment Operating Results - Lloyd's Syndicate

Through a wholly owned and consolidated subsidiary (the Corporate Member), we are a corporate member of Lloyd's of London. Our Corporate Member is the majority (58%) capital provider to Syndicate 1729, which began writing and reinsuring property and casualty business as of January 1, 2014. The remaining capital for Syndicate 1729 is provided by unrelated third parties, including private names and other corporate members. We have provided $77.2 million of capital in the form of FAL for the first year of Syndicate 1729 operations, as discussed under the heading "Investment Exposures" in Liquidity and Capital Resources and Financial Condition and have a total capital commitment to Syndicate 1729 through 2019 of up to $200 million. Syndicate 1729 covers a range of property and casualty insurance and reinsurance lines, and has a maximum underwriting capacity of £75 million for the 2014 underwriting year, of which £43.2 million ($70.0 million based on September 30, 2014 exchange rates) is our allocated underwriting capacity as a corporate member.

Syndicate 1729 functions as the medium through which we and the other capital providers participate in the property and casualty business underwritten by the Syndicate. Syndicate 1729 is led by Duncan Dale, an underwriter with more than 30 years of experience at Lloyd’s and in the London insurance and reinsurance market. A service company, 70% owned by Mr. Dale and 30% owned by ProAssurance, provides underwriting and other services to Syndicate 1729 on a fee basis. We account for our interest in the service company using the equity method as we do not control the service company. We have provided a £10 million credit facility to the Trustees of Syndicate 1729 to provide initial operating funds, £5.5 million ($9.2 million) of which had been advanced at September 30, 2014. See discussion under the heading "Business Combinations and Ventures" in Liquidity and Capital Resources and Financial Condition for additional detail.

Our Lloyd's Syndicate segment (comprised of our 58% participation in Syndicate 1729 operating results and 100% of the operating results of our wholly owned subsidiaries that support Syndicate 1729) reported net operating losses for the three and nine months endedSeptember 30, 2014 of $1.6 million and $3.8 million, respectively. We report results from our Syndicate 1729 involvement on a quarter delay, except that investment results associated with our FAL investments and certain U.S. paid administrative expenses, primarily start-up costs, are reported concurrently as that information is available on an earlier time frame.

Segment results reported for the three and nine months endedSeptember 30, 2014 included the following:

	September 30, 2014
($ in thousands)	Three Months Ended			Nine Months Ended
Net premiums written	$	3,889		$	24,163
Net premiums earned	$	3,445		$	6,397
Net investment income	$	120		$	244
Net losses and loss adjustment expenses	$	2,537		$	4,405
Underwriting, policy acquisition and operating expenses	$	2,584		$	5,999
Net loss ratio	73.6		%	68.9		%
Underwriting expense ratio	75.0		%	93.8		%

Net premiums written were $3.9 million and $24.2 million for the three and nine months endedSeptember 30, 2014, respectively, and included casualty, property, and property reinsurance coverages. As discussed in our Specialty P&C segment operating results, effective January 1, 2014, Syndicate 1729 entered into a quota share reinsurance agreement with one of our Specialty P&C wholly owned insurance subsidiaries and pays a ceding commission related to the amount assumed. Our Specialty P&C segment reports this ceding arrangement on a quarter delay as the amounts are not material and this permits the cession to be reported by both the Lloyd's Syndicate segment and the Specialty P&C segment in the same reporting period. Net premiums written in the above table included $2.9 million and $5.7 million for the three and nine months endedSeptember 30, 2014, respectively, attributable to our 58% participation in this arrangement.

69

Net premiums earned consist of gross premiums earned less the portion of earned premiums that we cede to our reinsurers for their assumption of a portion of our losses. Because premiums are generally earned pro rata over the entire policy period, fluctuations in premiums earned tend to lag those of premiums written. Policies written to date primarily carry a term of one year.

The net loss ratio was 73.6% and 68.9% for the three and nine months endedSeptember 30, 2014, respectively. Losses for the three- and nine-month periods were recorded using the loss assumptions incorporated into the business plan submitted to Lloyd's for Syndicate 1729; these assumptions are consistent with loss results reflected in Lloyd's historical data for similar risks. We expect loss ratios to fluctuate from quarter to quarter as Syndicate 1729 writes more business and the book begins to mature.

Underwriting expenses were $2.6 million and $6.0 million for the three and nine months endedSeptember 30, 2014, respectively, and primarily consisted of underwriting and administrative salaries and benefits, professional fees and amortization of policy acquisition costs (approximately $0.9 million and $1.7 million, respectively). No underwriting salaries or benefits were deferred during the period due to the Syndicate being in a start-up phase. The high expense ratio for the segment reflects these and other start-up costs expensed during the three- and nine-month periods, and a low level of earned premium due to Syndicate 1729 being in its initial stage of operations.

Net investment income for the 2014three- and nine-month periods related entirely to the income earned on the FAL investments. Our FAL investments are primarily in the form of short-term investments and investment-grade corporate debt securities.

Operating results of this segment are primarily taxed in the U.K. No tax benefit has been recognized related to the operations of this segments as the loss is not currently deductible for tax purposes in either the U.K. or the U.S. and does not meet GAAP criteria for recognition of a deferred tax asset.

70

Segment Operating Results - Corporate

Segment operating results for our Corporate segment for the three and nine months endedSeptember 30, 2014 were $6.4 million and $44.0 million, respectively, and were $20.9 million and $110.0 million for same respective periods of 2013. Results included the following:

	Three Months Ended September 30											Nine Months Ended September 30
($ in thousands)	2014			2013			Change					2014		2013			Change
Net investment income	$	32,710		$	33,889		$	(1,179	)	(3.5	%)	$	92,544	$	99,282		$	(6,738	)	(6.8	%)
Equity in earnings (loss) of unconsolidated subsidiaries	$	298		$	(305	)	$	603		>100%		$	2,767	$	(3,500	)	$	6,267		>100%
Total net realized investment gains (losses)	$	(8,131	)	$	12,500		$	(20,631	)	<(100%)		$	7,659	$	47,650		$	(39,991	)	(83.9	%)
Operating expense	$	3,189		$	2,640		$	549		20.8	%	$	6,826	$	9,692		$	(2,866	)	(29.6	%)
Interest expense	$	3,606		$	322		$	3,284		>100%		$	10,697	$	1,085		$	9,612		>100%
Income taxes	$	12,525		$	23,316		$	(10,791	)	(46.3	%)	$	43,328	$	60,044		$	(16,716	)	(27.8	%)
Gain on acquisition	$	—		$	494		$	(494	)	nm		$	—	$	35,986		$	(35,986	)	nm

Net Investment Income, Equity in Earnings (Loss) of Unconsolidated Subsidiaries, Net Realized Investment Gains (Losses)

Net Investment Income

Net investment income is primarily derived from the income earned by our fixed maturity securities and also includes dividend income from equity securities, income from our short-term and cash equivalent investments, earnings from other investments and increases in the cash surrender value of business owned life insurance (BOLI) contracts. Investment fees and expenses are deducted from investment income.

Net investment income by investment category was as follows:

	Three Months Ended September 30											Nine Months Ended September 30
($ in thousands)	2014			2013			Change					2014			2013			Change
Fixed maturities	$	28,302		$	30,672		$	(2,370	)	(7.7	%)	$	85,132		$	93,687		$	(8,555	)	(9.1	%)
Equities	2,661			2,394			267			11.2	%	7,479			7,000			479			6.8	%
Short-term investments and Other invested assets	2,793			2,000			793			39.7	%	4,723			2,514			2,209			87.9	%
Business owned life insurance	646			633			13			2.1	%	1,544			1,508			36			2.4	%
Investment fees and expenses	(1,692		)	(1,810		)	118			6.5	%	(6,334		)	(5,427		)	(907		)	(16.7	%)
Net investment income	$	32,710		$	33,889		$	(1,179	)	(3.5	%)	$	92,544		$	99,282		$	(6,738	)	(6.8	%)

Fixed Maturities

The decrease in our income from fixed maturity securities for both the three- and the nine-month periods of 2014 was primarily due to lower average investment balances. Although we added fixed securities valued at $107 million to our portfolio in 2014 as a result of the Eastern acquisition, we reduced the size of our fixed portfolio over the last year in order to purchase Eastern, repay debt, repurchase stock, pay dividends and invest in other asset classes. On an overall basis our average investment in fixed securities was approximately 7% lower for both the three- and nine-month periods of 2014, respectively, as compared to the same periods in 2013.

Average yields for our fixed maturity portfolio were as follows:

	Three Months Ended September 30		Nine Months Ended September 30
	2014	2013	2014	2013
Average income yield	3.7%	3.7%	3.7%	3.7%
Average tax equivalent income yield	4.2%	4.3%	4.3%	4.3%

Yields on fixed maturity securities remained relatively flat as compared to the same period in the prior year. Yields for the 2014three- and nine-month periods reflected a decline of less than 10 basis points related to fixed maturity securities acquired

71

in the Eastern transaction. In accordance with purchase accounting guidance, all Eastern securities were valued at fair value on the date acquired, which resulted in these securities having a lower yield on average than our other securities. Income from Treasury Inflation-Protected Securities showed little change for the 2014 three-month period but increased approximately $0.7 million for the 2014 nine-month period.

Equities

Income from our equity portfolio increased approximately 11% and 7% for the 2014three- and nine-month periods, respectively, as compared to the same periods in 2013. Average investment balances increased for the 2014three- and nine-month periods primarily due to the acquisition of Eastern. The equities acquired in the Eastern transaction were predominately bond funds which produce lower average yields than our traditional equities.

Short-term Investments and Other Invested Assets

Income from our other invested assets increased for the 2014three- and nine-month periods, principally due to increased distributions received from our interests in LPs that we account for using the cost method.

Investment Fees and Expenses

Investment fees and expenses were relatively flat for the 2014three-month period but increased for the 2014nine-month period due to the addition of Eastern and some associated transition expenses in the first two quarters of 2014.

Equity in Earnings (Loss) of Unconsolidated Subsidiaries

Equity in earnings (loss) of unconsolidated subsidiaries is derived from our investment interests accounted for under the equity method. Results were as follows:

	Three Months Ended September 30											Nine Months Ended September 30
($ in thousands)	2014			2013			Change					2014			2013			Change
Investment LPs/LLCs	$	2,760		$	1,597		$	1,163		72.8	%	$	9,255		$	3,877		$	5,378	>100%
Tax credit partnerships	(2,462		)	(1,902		)	(560		)	(29.4	%)	(6,488		)	(7,377		)	889		12.1	%
Equity in earnings (loss) of unconsolidated subsidiaries	$	298		$	(305	)	$	603		>100%		$	2,767		$	(3,500	)	$	6,267	>100%

We hold interests in certain LPs/LLCs that generate earnings from trading portfolios, secured debt, debt securities, multi-strategy funds and private equity investments. The additional income in 2014 reflects the contribution of an LP changed from the cost to the equity method in the fourth quarter of 2013 and higher earnings from our other LPs.

Our tax credit investments are designed to generate returns by providing tax benefits in the form of tax credits and tax-deductible project operating losses. We account for our tax credit investments on the equity method and record amortization of our investment each period based on our allocable portion of the projected operating losses of the underlying properties. Amortization is adjusted periodically as actual operating results of the underlying properties become available. The comparative amortization increase for the three-month period is primarily attributable to the re-estimation of inception-to-date amortization of certain partnership interests during the 2013 three-month period. The comparative nine-month decrease reflects lower amortization which occurs as the underlying projects mature.

The tax benefits received from our tax credit partnerships, which are not reflected in our investment results above, reduced our tax expenses in 2014 and 2013 as follows:

	Three Months Ended September 30				Nine Months Ended September 30
(In thousands)	2014		2013		2014		2013
Tax credits recognized during the period	$	4,649	$	4,473	$	13,432	$	13,418
Tax benefit of amortization	$	862	$	666	$	2,271	$	2,582

72

Non-GAAP Financial Measure – Tax Equivalent Investment Result

We believe that to fully understand our investment returns it is important to consider the current tax benefits associated with certain investments as the tax benefit received represents a portion of the return provided by our tax-exempt bonds, BOLI, common and preferred stocks, and tax credit partnership investments (our tax-preferred investments). We impute a pro-forma tax-equivalent result by estimating the amount of fully-taxable income needed to achieve the same after-tax result as is currently provided by our tax-preferred investments. We believe this better reflects the economics behind our decision to invest in certain asset classes that are either taxed at lower rates and/or result in reductions to our current federal income tax expense. Our pro forma tax-equivalent investment result is shown in the table that follows as is a reconciliation of our tax equivalent result to our GAAP net investment result.

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
GAAP net investment result:
Net investment income	$	32,710		$	33,889		$	92,544		$	99,282
Equity in earnings (loss) of unconsolidated subsidiaries	298			(305		)	2,767			(3,500		)
GAAP net investment result	$	33,008		$	33,584		$	95,311		$	95,782
Pro forma tax-equivalent investment results	$	45,077		$	46,015		$	130,860		$	132,694
Reconciliation of pro forma and GAAP tax-equivalent investment results:
Pro forma tax-equivalent investment results	$	45,077		$	46,015		$	130,860		$	132,694
Taxable equivalent adjustments, calculated using the 35% federal statutory tax rate:
State and municipal bonds	(4,070		)	(4,639		)	(12,699		)	(14,270		)
BOLI	(348		)	(341		)	(831		)	(812		)
Dividends received	(479		)	(570		)	(1,286		)	(1,187		)
Tax credit partnerships	(7,152		)	(6,881		)	(20,665		)	(20,643		)
Other investments	(20		)	—			(68		)	—
GAAP net investment result	$	33,008		$	33,584		$	95,311		$	95,782

73

Net Realized Investment Gains (Losses)

The following table provides detailed information regarding our net realized investment gains (losses).

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Other-than-temporary impairment losses, total:
State and municipal bonds	$	—		$	—		$	(50	)	$	(71	)
Corporate debt	(1,425		)	—			(1,425		)	—
Portion recognized in (reclassified from) Other Comprehensive Income:
Corporate debt	268			—			268			—
Net impairments, attributable to fixed maturity impairments recognized in earnings	$	(1,157	)	$	—		$	(1,207	)	$	(71	)
Gross realized gains, available-for-sale securities	736			7,708			3,711			14,631
Gross realized (losses), available-for-sale securities	(52		)	(5,305		)	(371		)	(6,269		)
Net realized gains (losses), trading securities	3,227			5,818			21,830			14,650
Net realized gains (losses), other investments	55			—			321			—
Change in unrealized holding gains (losses), trading securities	(10,402		)	3,355			(17,906		)	23,784
Change in unrealized holding gains (losses), convertible securities, carried at fair value as a part of Other investments	(538		)	—			1,281			—
Other	—			924			—			925
Net realized investment gains (losses)	$	(8,131	)	$	12,500		$	7,659		$	47,650

During the third quarter of 2014, we recognized credit-related impairments of $1.4 million related to two corporate debt instruments. Additionally, we recognized a non-credit impairment related to one of the instruments of $0.3 million as the fair value of the instrument was less than the expected future cash flows from the security. All impairments of debt securities recognized during 2013 were credit-related.

In both 2014 and 2013, sales of securities in our trading portfolio generated realized gains which reduced trading security unrealized holding gains (losses). For the 2014 three-month period, unrealized holding gains (losses) were further reduced by declines in market valuations. On the whole, market valuations improved during the nine-month periods of both 2014 and 2013. In 2013, the improvement more than offset the effect of sales during the period, but only partially offset the effect of sales during the 2014 nine-month period.

74

Operating Expenses

Operating expenses were $3.2 million and $6.8 million for the three and nine months endedSeptember 30, 2014, respectively, and $2.6 million and $9.7 million for the three and nine months endedSeptember 30, 2013, respectively. Corporate expenses in 2014 reflected cost increases as compared to 2013 of approximately $1.2 million for the three-month period and cost reductions of approximately $1.8 million for the nine-month period that were attributable to discrete events of one period or the other, including in 2013 costs associated with business combinations or expansions, and in 2014, recoveries associated with the settlement of litigation and a reserve established related to discontinued operations of an acquired entity. Otherwise, we reduced corporate expenses by approximately $0.7 million during the 2014 three-month period and $1.1 million during the 2014 nine-month period.

Interest Expense

Interest expense increased during the three and nine months endedSeptember 30, 2014 as compared to the same periods in 2013 primarily due to the issuance of unsecured senior notes in the fourth quarter of 2013 which carry a higher interest rate and are greater in amount than our average borrowing outstanding in 2013. Our weighted average outstanding debt approximated $250 million for both the three and nine months endedSeptember 30, 2014 as compared to $125 million for the same periods in 2013.

Interest expense for the three and nine months endedSeptember 30, 2014 and 2013 is provided in the following table:

	Three Months Ended September 30							Nine Months Ended September 30
(In thousands)	2014		2013		Change			2014		2013		Change
Senior notes due 2023	$	3,467	$	—	$	3,467		$	10,186	$	—	$	10,186
Revolving credit agreement (including fees and amortization)	129		322		(193		)	376		1,077		(701		)
Other	10		—		10			135		8		127
	$	3,606	$	322	$	3,284		$	10,697	$	1,085	$	9,612

Taxes

We calculate our effective tax rate on a consolidated basis, dividing consolidated tax expense by consolidated pre-tax income. Factors affecting our effective tax rate include the following:

	Three Months Ended September 30				Nine Months Ended September 30
	2014		2013		2014		2013
Statutory rate	35.0	%	35.0	%	35.0	%	35.0	%
Tax-exempt income	(4.5	%)	(4.1	%)	(4.9	%)	(5.3	%)
Tax credits	(7.2	%)	(5.2	%)	(6.9	%)	(6.9	%)
Non-taxable gain on acquisition	—%		(0.5	%)	—	%	(2.9	%)
Non-U.S. loss	0.4	%	—	%	0.4	%	—	%
Other	2.8	%	1.7	%	1.2	%	1.0	%
Effective tax rate	26.5	%	26.9	%	24.8	%	20.9	%

We estimate our annual effective tax rate at the end of each quarterly reporting period, which is used to record the provision for income taxes in our interim financial statements. Our effective tax rates for both 2014 and 2013 were different from the statutory Federal income tax rate primarily due to the following:

• a portion of our investment income was tax-exempt

• we utilized tax credits transferred to us from our tax credit partnership investments

• we did not recognize a tax benefit related to the operating loss associated with our participation in Lloyd's Syndicate 1729, a U.K. tax entity

• the gain on acquisition recognized in 2013 was not taxable

Tax benefits recognized, related to the tax credits, approximated $4.6 million and $13.4 million for the three and nine months endedSeptember 30, 2014 as compared to $4.5 million and $13.4 million for the 2013three- and nine-month periods.

75

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

We believe that we are principally exposed to three types of market risk related to our investment operations. These risks are interest rate risk, credit risk and equity price risk. We have limited exposure to foreign currency risk as we issue few insurance contracts denominated in currencies other than the U. S. dollar and we have few monetary assets or obligations denominated in foreign currencies.

Interest Rate Risk

Our fixed maturities portfolio is exposed to interest rate risk. Fluctuations in interest rates have a direct impact on the market valuation of these securities. As interest rates rise, market values of fixed income portfolios fall and vice versa. Certain of the securities are held in an unrealized loss position; we do not intend to sell and believe we will not be required to sell any of the debt securities held in an unrealized loss position before its anticipated recovery.

The following table summarizes estimated changes in the fair value of our available-for-sale fixed maturity securities for specific hypothetical changes in interest rates by asset class at September 30, 2014 and December 31, 2013. There are principally two factors that determine interest rates on a given security: market interest rates and credit spreads. As different asset classes can be affected in different ways by movements in those two factors, we have broken out our portfolio by asset class in the following table.

76

	Interest Rate Shift in Basis Points
	September 30, 2014
	(200)		(100)		Current		100		200
Fair Value (in millions):
U.S. Treasury obligations	$	185	$	183	$	177	$	177	$	173
U.S. Government-sponsored enterprise obligations	46		45		44		43		41
State and municipal bonds	1,137		1,121		1,088		1,048		1,007
Corporate debt	1,568		1,527		1,473		1,417		1,365
Asset-backed securities	477		474		465		450		436
All fixed maturity securities	$	3,413	$	3,350	$	3,247	$	3,135	$	3,022
Duration:
U.S. Treasury obligations	3.65		3.61		3.57		3.53		3.50
U.S. Government-sponsored enterprise obligations	2.47		2.45		2.86		3.00		2.98
State and municipal bonds	3.31		3.44		3.61		3.79		3.92
Corporate debt	3.69		3.74		3.83		3.78		3.72
Asset-backed securities	1.57		2.10		2.87		3.44		3.73
All fixed maturity securities	3.25		3.38		3.59		3.71		3.77
	December 31, 2013
Fair Value (in millions):
U.S. Treasury obligations	$	176	$	174	$	171	$	168	$	165
U.S. Government-sponsored enterprise obligations	34		34		33		32		30
State and municipal bonds	1,220		1,195		1,155		1,107		1,061
Corporate debt	1,453		1,413		1,361		1,308		1,257
Asset-backed securities	410		406		398		385		371
All fixed maturity securities	$	3,293	$	3,222	$	3,118	$	3,000	$	2,884
Duration:
U.S. Treasury obligations	3.85		3.81		3.77		3.72		3.68
U.S. Government-sponsored enterprise obligations	2.82		3.07		3.15		3.12		3.07
State and municipal bonds	3.61		3.84		4.07		4.20		4.25
Corporate debt	4.10		4.13		4.09		4.03		3.96
Asset-backed securities	2.08		2.55		3.12		3.57		3.80
All fixed maturity securities	3.60		3.80		3.90		4.00		4.00

Computations of prospective effects of hypothetical interest rate changes are based on numerous assumptions, including the maintenance of the existing level and composition of fixed income security assets, and should not be relied on as indicative of future results.

Certain shortcomings are inherent in the method of analysis presented in the computation of the fair value of fixed rate instruments. Actual values may differ from the projections presented should market conditions vary from assumptions used in the calculation of the fair value of individual securities, including non-parallel shifts in the term structure of interest rates and changing individual issuer credit spreads.

Our cash and short-term investment portfolio at September 30, 2014 was carried on a cost basis which approximates its fair value. Our portfolio lacks significant interest rate sensitivity due to its short duration.

77

Credit Risk

We have exposure to credit risk primarily as a holder of fixed income securities. We control this exposure by emphasizing investment grade credit quality in the fixed income securities we purchase.

As of September 30, 2014, 93% of our fixed maturity securities were rated investment grade as determined by Nationally Recognized Statistical Rating Organizations (NRSROs), such as Fitch, Moody’s and Standard & Poor’s. We believe that this concentration in investment grade securities reduces our exposure to credit risk on our fixed income investments to an acceptable level. However, investment grade securities, in spite of their rating, can rapidly deteriorate and result in significant losses. Ratings published by the NRSROs are one of the tools used to evaluate the credit worthiness of our securities. The ratings reflect the subjective opinion of the rating agencies as to the credit worthiness of the securities, and therefore, we may be subject to additional credit exposure should the rating prove to be unreliable.

We also have exposure to credit risk related to our receivables from reinsurers. Our receivables from reinsurers (with regard to both paid and unpaid losses) approximated $262 million at September 30, 2014 and $251 million at December 31, 2013, with the 2014 increase primarily attributable to our acquisition of Eastern. We monitor the credit risk associated with our reinsurers using publicly available financial and rating agency data.

Equity Price Risk

At September 30, 2014 the fair value of our equity investments, excluding our equity investments in bond investment funds as discussed below, was $253 million. These equity securities are subject to equity price risk, which is defined as the potential for loss in fair value due to a decline in equity prices. The weighted average beta of this group of securities was 0.94. Beta measures the price sensitivity of an equity security or group of equity securities to a change in the broader equity market, in this case the S&P 500 Index. If the value of the S&P 500 Index increased by 10%, the fair value of these securities would be expected to increase by 9.4% to $277 million. Conversely, a 10% decrease in the S&P 500 Index would imply a decrease of 9.4% in the fair value of these securities to $230 million. The selected hypothetical changes of plus or minus 10% do not reflect what could be considered the best or worst case scenarios and are used for illustrative purposes only.

Our equity investments include equity investments in certain bond investment funds which are not significantly subject to equity price risk, and thus we have excluded these investments from the above analysis. Furthermore, these bond fund investments are primarily held by the segregated portfolio cells of our Eastern Re insurance subsidiary and changes in the fair value of these investments, when realized, accrue to the preferred stockholders of the related portfolio cell.

78

ITEM 4. CONTROLS AND PROCEDURES.

The Chief Executive Officer and Chief Financial Officer of the Company participated in management’s evaluation of our disclosure controls and procedures (as defined in SEC Rule 13a-15(e)) as of September 30, 2014. ProAssurance’s disclosure controls and procedures are designed to reasonably assure that information required to be disclosed by us in reports we file or submit under the Exchange Act is accumulated and communicated to our management as appropriate to allow timely decisions regarding disclosure and is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures are effective.

Changes in Internal Control over Financial Reporting

There have been no significant changes in our internal controls over financial reporting that have materially affected, or are reasonably likely to materially affect, those controls during the quarter. On January 1, 2014 we completed the acquisition of Eastern Insurance Holdings, Inc. (Eastern). Our management has concluded that it will exclude Eastern's systems and processes from the scope of ProAssurance's assessment of internal control over financial reporting as of December 31, 2014 in reliance on the guidance set forth in Question 3 of a "Frequently Asked Questions" interpretive release issued by the staff of the Securities and Exchange Commission's Office of the Chief Accountant and the Division of Corporation Finance in September 2004 (and revised on October 6, 2004). We are excluding Eastern from that scope because we will not have completed our assessment of Eastern's systems and processes by that date.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.

See Note 8 of the Notes to Condensed Consolidated Financial Statements.

ITEM 1A. RISK FACTORS.

There are no changes to the "Risk Factors" in Part 1, Item 1A of the 2013 Form 10-K.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.

(a) Not applicable.

(b) Not applicable.

(c) Information required by Item 703 of Regulation S-K.

Period	Total Number of Shares Purchased	Average Price Paid per Share	Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (*) (in thousands)
July 1 - 31, 2014	423,910	$44.67	423,910	$162,677
August 1 - 31, 2014	226,329	$45.10	226,329	$152,464
September 1 - 30, 2014	349,030	$45.26	349,030	$136,660
Total	999,269	$44.97	999,269

* Under its current plan begun in November 2010, the ProAssurance Board of Directors has authorized $400 million for the repurchase of common shares or the retirement of outstanding debt. This is ProAssurance’s only plan for the repurchase of common shares, and the plan has no expiration date.

79

ITEM 6. EXHIBITS

Exhibit Number	Description
31.1	Certification of Principal Executive Officer of ProAssurance as required under SEC rule 13a-14(a).
31.2	Certification of Principal Financial and Accounting Officer of ProAssurance as required under SEC rule 13a-14(a).
32.1	Certification of Principal Executive Officer of ProAssurance as required under SEC Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code, as amended (18 U.S.C. 1350).
32.2	Certification of Principal Financial and Accounting Officer of ProAssurance as required under SEC Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code, as amended (18 U.S.C. 1350).
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

80

SIGNATURE

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

PROASSURANCE CORPORATION

November 5, 2014

/s/    Edward L. Rand, Jr.

Edward L. Rand, Jr.

Chief Financial Officer

(Duly authorized officer and principal financial officer)

81

EX-31.1

Exhibit 31.1

CERTIFICATION

I, W. Stancil Starnes, certify that:

1. I have reviewed this report on Form 10-Q of ProAssurance 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 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.

Date: November 5, 2014

/s/ W. Stancil Starnes

W. Stancil Starnes

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Edward L. Rand, Jr., certify that:

1. I have reviewed this report on Form 10-Q of ProAssurance 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 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.

Date: November 5, 2014

/s/ Edward L. Rand, Jr.

Edward L. Rand, Jr.

Chief Financial Officer

EX-32.1

Exhibit 32.1

A signed original of this written statement required by Section 906 has been provided to ProAssurance Corporation and will be retained by ProAssurance Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ProAssurance Corporation (the “Company”) on Form 10-Q for the quarter ending September 30, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, W. Stancil Starnes, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) 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 result of operations of the Company.

/s/ W. Stancil Starnes

W. Stancil Starnes

Chief Executive Officer

November 5, 2014

EX-32.2

Exhibit 32.2

A signed original of this written statement required by Section 906 has been provided to ProAssurance Corporation and will be retained by ProAssurance Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ProAssurance Corporation (the “Company”) on Form 10-Q for the quarter ending September 30, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Edward L. Rand, Jr., Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) 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 result of operations of the Company.

/s/ Edward L. Rand, Jr.

Edward L. Rand, Jr.

Chief Financial Officer

November 5, 2014

Exhibit 32.2

XML

Investments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
U.S. Treasury obligations [Member]
Fixed maturities, available for sale
Amortized Cost	$ 173,632	$ 166,115
Gross Unrealized Gains	4,396	6,118
Gross Unrealized Losses	1,215	1,519
Estimated Fair Value	176,813	170,714
U.S. Government-sponsored enterprise obligations [Member]
Fixed maturities, available for sale
Amortized Cost	42,480	30,942
Gross Unrealized Gains	1,709	2,251
Gross Unrealized Losses	223	425
Estimated Fair Value	43,966	32,768
State and municipal bonds [Member]
Fixed maturities, available for sale
Amortized Cost	1,038,278	1,116,060
Gross Unrealized Gains	50,055	46,533
Gross Unrealized Losses	699	7,927
Estimated Fair Value	1,087,634	1,154,666
Corporate debt [Member]
Fixed maturities, available for sale
Amortized Cost	1,433,266	1,321,838
Gross Unrealized Gains	48,894	53,059
Gross Unrealized Losses	9,175	13,744
Estimated Fair Value	1,472,985	1,361,153
Residential mortgage-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	282,717	230,861
Gross Unrealized Gains	8,817	7,608
Gross Unrealized Losses	1,220	2,855
Estimated Fair Value	290,314	235,614
Agency commercial mortgage-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	16,785	27,268
Gross Unrealized Gains	172	343
Gross Unrealized Losses	64	136
Estimated Fair Value	16,893	27,475
Other commercial mortgage-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	55,853	59,066
Gross Unrealized Gains	1,587	2,491
Gross Unrealized Losses	117	167
Estimated Fair Value	57,323	61,390
Other asset-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	100,715	74,106
Gross Unrealized Gains	346	487
Gross Unrealized Losses	169	324
Estimated Fair Value	100,892	74,269
Debt Securities [Member]
Fixed maturities, available for sale
Amortized Cost	3,143,726	3,026,256
Gross Unrealized Gains	115,976	118,890
Gross Unrealized Losses	12,882	27,097
Estimated Fair Value	$ 3,246,820	$ 3,118,049

XML

Shareholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reclassification adjustments related to available-for-sale securities
Net realized investment gains (losses)	$ (8,131)	$ 12,500	$ 7,659	$ 47,650
Total amounts reclassified, before tax effect	47,303	86,673	174,779	286,702
Tax effect (at 35%)	(12,525)	(23,316)	(43,328)	(60,044)
Net income	34,778	63,357	131,451	226,658
Tax rate used to compute the tax effect of OCI components	35.00%	35.00%	35.00%	35.00%
Deferred tax expense (benefit) included in OCI	(5,126)	(1,746)	(2,571)	(26,358)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification adjustments related to available-for-sale securities
Total amounts reclassified, before tax effect	(473)	2,403	2,133	8,291
Tax effect (at 35%)	166	(841)	(747)	(2,902)
Net income	(307)	1,562	1,386	5,389
Reclassification out of Accumulated Other Comprehensive Income [Member] | Realized investment gains (losses) [Member]
Reclassification adjustments related to available-for-sale securities
Net realized investment gains (losses)	(473)	2,403	2,133	8,638
Reclassification out of Accumulated Other Comprehensive Income [Member] | Non-credit impairment losses reclassified to earnings, due to sale of securities or reclassification as a credit loss
Reclassification adjustments related to available-for-sale securities
Net realized investment gains (losses)	$ 0	$ 0	$ 0	$ (347)

XML

Investments (Details Textual) (USD $)					9 Months Ended
	Sep. 30, 2014 Affiliate	Dec. 31, 2013	Sep. 30, 2014 Tax Credit Partnerships Almost 100% Ownership [Member] investment_interest	Sep. 30, 2014 Tax Credit Partnerships Less Than 20% Ownership [Member]	Sep. 30, 2014 Maximum [Member]	Sep. 30, 2014 Maximum [Member] Tax Credit Partnerships Almost 100% Ownership [Member]	Sep. 30, 2014 Maximum [Member] Tax Credit Partnerships Less Than 20% Ownership [Member]	Sep. 30, 2014 Fixed maturities [Member]	Sep. 30, 2014 Short-term Investments [Member]	Sep. 30, 2014 Non Government-Backed [Member] Issuer Security	Dec. 31, 2013 Non Government-Backed [Member] Security Issuer
Schedule of Available-for-sale Securities [Line Items]
Number of investment affiliates exceeding shareholder's equity ten percent threshold limit	0
Threshold limit of investments based on shareholders' equity	10.00%
Securities on deposit with state insurance departments	$ 48,200,000
Required FAL Deposit	77,200,000							71,500,000	5,700,000
Business owned life insurance cost	33,000,000
Period for federal home loan bank stock liquidation process					5 years
Number of tax credit partnerships almost 100% ownership percentage			2
Percentage Ownership						100.00%	20.00%
Investment in unconsolidated subsidiaries	254,962,000	214,236,000	60,900,000	76,500,000
Number of debt securities in unrealized loss position										617	714
Debt securities in unrealized loss position as percentage of total debt securities held										21.10%	26.30%
Number of issuers in unrealized loss position										441	516
Single greatest unrealized loss position										500,000	400,000
Second greatest unrealized loss position										$ 300,000	$ 400,000

XML

Shareholders' Equity (Details Textual) (USD $)	1 Months Ended	3 Months Ended						9 Months Ended
	Feb. 28, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized common stock (in shares)		100,000,000						100,000,000		100,000,000
Authorized preferred stock (in shares)		50,000,000						50,000,000		50,000,000
Quarterly dividend declared, per share (USD per share)		$ 0.3	$ 0.30	$ 0.30	$ 0.25	$ 0.25	$ 0.25	$ 0.90	$ 0.75
Dividend declared		$ 17,300,000			$ 15,500,000			$ 52,900,000	$ 46,400,000
Total authorizations which remain available for use		136,700,000						136,700,000
Common shares acquired (in shares)								3,700,000	200,000
Cost of common shares reacquired								167,242,000	7,964,000
Share-based compensation		2,400,000			2,200,000			8,022,000	6,930,000
Tax benefits from share-based compensation expense		800,000			800,000			2,800,000	2,400,000
Bonus compensation shares issued (in shares)	30,000
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities		$ 800,000						$ 800,000		$ 500,000
Tax rate used to compute the tax effect of amounts reclassified out of OCI		35.00%			35.00%			35.00%	35.00%
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards in period (in shares)	50,000
Fair value of each unit awarded (USD per share)	$ 46.34
Award vesting period	3 years
Shares issued in period for share-based compensation (in shares)	29,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards in period (in shares)	161,000
Fair value of each unit awarded (USD per share)	$ 46.34
Award vesting period	3 years
Shares issued in period for share-based compensation (in shares)	111,000
Award payout rate	125.00%
Minimum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award payout rate	75.00%
Maximum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award payout rate	125.00%

XML

Investments (Details 7) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Cumulative credit losses recorded in earnings related to impaired debt securities
Accumulated credit losses related to impaired debt securities, Beginning Balance	$ 83	$ 413	$ 83	$ 3,301
No OTTI has been previously recognized	149	0	149	0
Reductions due to: Securities sold during the period (realized)	0	(330)	0	(3,218)
Accumulated credit losses related to impaired debt securities, Ending Balance	$ 232	$ 83	$ 232	$ 83

XML

Fair Value Measurement (Details 1) (USD $)	Sep. 30, 2014		Dec. 31, 2013
Secured debt fund [Member]
Investments in private funds [Abstract]
Investments LPs/LLCs unfunded commitments	$ 16,200,000	[1]
Investments in LPs/LLCs fair value	23,896,000	[1]	13,233,000	[1]
Long equity fund [Member]
Investments in private funds [Abstract]
Investments LPs/LLCs unfunded commitments	0	[2]
Investments in LPs/LLCs fair value	7,034,000	[2]	6,574,000	[2]
Long/Short equity funds [Member]
Investments in private funds [Abstract]
Investments LPs/LLCs unfunded commitments	0	[3]
Investments in LPs/LLCs fair value	25,016,000	[3]	28,385,000	[3]
Non-public equity funds [Member]
Investments in private funds [Abstract]
Investments LPs/LLCs unfunded commitments	71,518,000	[4]
Investments in LPs/LLCs fair value	42,818,000	[4]	23,870,000	[4]
Multi-Strategy Fund of Funds [Member]
Investments in private funds [Abstract]
Investments LPs/LLCs unfunded commitments	0	[5]
Investments in LPs/LLCs fair value	8,263,000	[5]	0	[5]
Structured Credit Fund [Member]
Investments in private funds [Abstract]
Investments LPs/LLCs unfunded commitments	0	[6]
Investments in LPs/LLCs fair value	3,766,000	[6]	0	[6]
Investment in LPs/LLCs [Member]
Investments in private funds [Abstract]
Investments in LPs/LLCs fair value	$ 110,793,000		$ 72,062,000

[1] The LP is structured to provide income and capital appreciation primarily through investments in senior secured debt. Redemptions are not allowed. Income and capital are to be periodically distributed at the discretion of the LP over an anticipated time frame that spans from 7 to 9 years.

[2] The LP holds long equities of public international companies. Redemptions are allowed at the end of any calendar month with a prior notice requirement of 15 days and are paid within 10 days of the end of the calendar month of the redemption request.

[3] Comprised of interests in multiple unrelated LP funds. The funds hold primarily long and short North American equities, and target absolute returns using strategies designed to take advantage of event-driven market opportunities. The funds generally permit quarterly or semi-annual redemptions of the investors’ existing capital balance with notice requirements of 30 to 90 days. For some funds, redemptions above specified thresholds (lowest threshold is 90%) may be only partially payable until after a fund audit is completed and are then payable within 30 days.

[4] Comprised of interests in three unrelated LP funds, each structured to provide capital appreciation through diversified investments in private equity, which can include investments in buyout, venture capital, mezzanine debt, distressed debt and other private equity-oriented LPs. One LP allows redemption by special consent; the others do not permit redemption. Income and capital are to be periodically distributed at the discretion of the LP over time frames that are anticipated to span from 4 to 12 years.

[5] The LLC is structured to build and manage low volatility, multi-manager portfolios that have little or no correlation to the broader fixed income and equity security markets. Redemptions are not permitted but the LLC Board is permitted discretion to periodically extend offers to repurchase units of the LLC.

[6] The LP seeks to obtain superior risk-adjusted absolute returns by acquiring and actively managing a diversified portfolio of debt securities, including bonds, loans and other asset-backed instruments. Redemptions are allowed at any quarter-end with a prior notice requirement of 90 days.

XML

Segment Information (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Segment Reporting Information [Line Items]
Number of operating segments		4
Workers Compensation [Member]
Segment Reporting Information [Line Items]
Worker's compensation SPC percentage ceded	100.00%	100.00%
Lloyds Syndicate [Member]
Segment Reporting Information [Line Items]
Proportion of Capital Provided to support Lloyd's Syndicate 1729	58.00%	58.00%
Specialty Property and Casualty [Member]
Segment Reporting Information [Line Items]
Premiums Ceded To Lloyd's Syndicate Segment	$ 1.1	$ 1.6

XML

Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2014

Equity [Abstract]

Reclassification adjustments related to available-for-sale securities

Amounts reclassified from accumulated other comprehensive income to net income and the amounts of deferred tax expense (benefit) included in OCI were as follows:

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Reclassifications from accumulated other comprehensive income to net income, available-for-sale securities:
Realized investment gains (losses)	$	(473	)	$	2,403		$	2,133		$	8,638
Non-credit impairment losses reclassified to earnings, due to sale of securities or reclassification as a credit loss	—			—			—			(347		)
Total amounts reclassified, before tax effect	(473		)	2,403			2,133			8,291
Tax effect (at 35%)	166			(841		)	(747		)	(2,902		)
Net reclassification adjustments	$	(307	)	$	1,562		$	1,386		$	5,389
Deferred tax expense (benefit) included in OCI	$	(5,126	)	$	(1,746	)	$	(2,571	)	$	(26,358	)

XML

Deferred Policy Acquisition Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Insurance [Abstract]
Amortization of deferred policy acquisition costs	$ 16.7	$ 13.9	$ 52.9	$ 39.0

XML

Investments (Details 3) (USD $)	9 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
Unconsolidated Subsidiaries
Investment in unconsolidated subsidiaries	$ 254,962,000		$ 214,236,000
Tax credit partnerships [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	15,710,000	[1]
Investment in unconsolidated subsidiaries	137,386,000		142,174,000
Secured debt fund [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	16,200,000	[1]
Investment in unconsolidated subsidiaries	23,896,000		13,233,000
Secured debt fund [Member] | Maximum [Member]
Unconsolidated Subsidiaries
Percentage Ownership	20.00%
Long equity fund [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	0	[1]
Investment in unconsolidated subsidiaries	7,034,000		6,574,000
Long equity fund [Member] | Maximum [Member]
Unconsolidated Subsidiaries
Percentage Ownership	20.00%
Long/Short equity funds [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	0	[1]
Investment in unconsolidated subsidiaries	25,016,000		28,385,000
Long/Short equity funds [Member] | Maximum [Member]
Unconsolidated Subsidiaries
Percentage Ownership	25.00%
Non-public equity funds [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	88,034,000	[1]
Investment in unconsolidated subsidiaries	46,127,000		23,870,000
Non-public equity funds [Member] | Maximum [Member]
Unconsolidated Subsidiaries
Percentage Ownership	20.00%
Multi-Strategy Fund of Funds [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	0	[1]
Investment in unconsolidated subsidiaries	8,263,000		0
Multi-Strategy Fund of Funds [Member] | Maximum [Member]
Unconsolidated Subsidiaries
Percentage Ownership	20.00%
Structured Credit Fund [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	0	[1]
Investment in unconsolidated subsidiaries	3,766,000		0
Structured Credit Fund [Member] | Maximum [Member]
Unconsolidated Subsidiaries
Percentage Ownership	20.00%
Real Estate Funds [Member]
Unconsolidated Subsidiaries
Unfunded Commitments	6,526,000	[1]
Investment in unconsolidated subsidiaries	$ 3,474,000		$ 0
Real Estate Funds [Member] | Maximum [Member]
Unconsolidated Subsidiaries
Percentage Ownership	20.00%

[1] Unfunded commitments are included in the carrying value of tax credit partnerships only.

XML

Fair Value Measurement (Details Textuals) (Details)	9 Months Ended
	Sep. 30, 2014
Long equity fund [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investment redemption notice period	15 days
Structured Credit Fund [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investment redemption notice period	90 days
Minimum [Member] | Secured debt fund [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Liquidating investments remaining period	7 years
Minimum [Member] | Long/Short Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Redemption percentage of LP at NAV for which initial payment is limited	90.00%
Investment redemption notice period	30 days
Minimum [Member] | Non-public equity funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Liquidating investments remaining period	4 years
Maximum [Member] | Secured debt fund [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Liquidating investments remaining period	9 years
Maximum [Member] | Long equity fund [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Payment period for redemption of LP valued at NAV	10 days
Maximum [Member] | Long/Short Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Payment period for redemption of LP valued at NAV	30 days
Investment redemption notice period	90 days
Maximum [Member] | Non-public equity funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Liquidating investments remaining period	12 years

XML

Commitments and Contingencies (Details Textual)	Sep. 30, 2014 USD ($)	Sep. 30, 2014 GBP (£)	Sep. 30, 2014 Non-Public Investment Entities [Member] USD ($)
Other Commitment, Fiscal Year Maturity [Abstract]
Commitments Total			$ 164,700,000
Commitments due 2014			22,600,000
Commitments due 2015 and 2016			124,700,000
Commitments due 2017 and 2018			16,500,000
Commitments due thereafter			900,000
Required FAL Deposit	77,200,000
Estimated FAL For Next Underwriting Year		50,900,000
Estimated Additional Funding Required In Current Year For FAL	9,800,000	5,800,000
Current lending capacity under revolving credit agreement	16,000,000	10,000,000
Interest rate on revolving credit agreement	8.50%	8.50%
Advances outstanding under revolving credit agreement	$ 9,200,000	£ 5,500,000

XML

Investments (Details 8) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Information regarding sales and purchases of available-for-sale securities
Proceeds from sales (exclusive of maturities and paydowns)	$ 24,800,000	$ 319,200,000	$ 147,300,000	$ 494,800,000
Purchases	$ 146,500,000	$ 98,800,000	$ 511,894,000	$ 406,152,000

XML

Fair Value Measurement

9 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurement

Fair Value Measurement

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three level hierarchy has been established for valuing assets and liabilities based on how transparent (observable) the inputs are that are used to determine fair value, with the inputs considered most observable categorized as Level 1 and those that are the least observable categorized as Level 3. Hierarchy levels are defined as follows:

Level 1: quoted (unadjusted) market prices in active markets for identical assets and liabilities. For ProAssurance, Level 1 inputs are generally quotes for debt or equity securities actively traded in exchange or over-the-counter markets.

Level 2: market data obtained from sources independent of the reporting entity (observable inputs). For ProAssurance, Level 2 inputs generally include quoted prices in markets that are not active, quoted prices for similar assets or liabilities, and results from pricing models that use observable inputs such as interest rates and yield curves that are generally available at commonly quoted intervals.

Level 3: the reporting entity’s own assumptions about market participant assumptions based on the best information available in the circumstances (non-observable inputs). For ProAssurance, Level 3 inputs are used in situations where little or no Level 1 or 2 inputs are available or are inappropriate given the particular circumstances. Level 3 inputs include results from pricing models for which some or all of the inputs are not observable, discounted cash flow methodologies, single non-binding broker quotes and adjustments to externally quoted prices that are based on management judgment or estimation.

Fair values of assets measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013, including financial instruments for which ProAssurance has elected fair value, are shown in the following tables. The tables also indicate the fair value hierarchy of the valuation techniques utilized to determine those fair values. For some assets, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. When this is the case, the asset is categorized based on the level of the most significant input to the fair value measurement. Assessments of the significance of a particular input to the fair value measurement require judgment and consideration of factors specific to the assets being valued.

	September 30, 2014
	Fair Value Measurements Using						Total
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Assets:
Fixed maturities, available for sale
U.S. Treasury obligations	$	—	$	176,813	$	—	$	176,813
U.S. Government-sponsored enterprise obligations	—		43,966		—		43,966
State and municipal bonds	—		1,082,040		5,594		1,087,634
Corporate debt, multiple observable inputs	—		1,459,550		—		1,459,550
Corporate debt, limited observable inputs:
Other corporate debt, NRSRO ratings available	—		—		10,793		10,793
Other corporate debt, NRSRO ratings not available	—		—		2,642		2,642
Residential mortgage-backed securities	—		290,314		—		290,314
Agency commercial mortgage-backed securities	—		16,893		—		16,893
Other commercial mortgage-backed securities	—		57,323		—		57,323
Other asset-backed securities	—		96,119		4,773		100,892
Equity securities
Financial	75,141		—		—		75,141
Utilities/Energy	26,551		—		—		26,551
Consumer oriented	64,912		—		—		64,912
Industrial	54,912		—		—		54,912
Bond funds	53,178		—		—		53,178
All other	31,937		—		—		31,937
Short-term investments	94,323		650		—		94,973
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	—		—		110,793		110,793
Other investments	4,830		25,228		—		30,058
Total assets	$	405,784	$	3,248,896	$	134,595	$	3,789,275

	December 31, 2013
	Fair Value Measurements Using						Total
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Assets:
Fixed maturities, available for sale
U.S. Treasury obligations	$	—	$	170,714	$	—	$	170,714
U.S. Government-sponsored enterprise obligations	—		32,768		—		32,768
State and municipal bonds	—		1,147,328		7,338		1,154,666
Corporate debt, multiple observable inputs	—		1,346,977		—		1,346,977
Corporate debt, limited observable inputs:
Other corporate debt, NRSRO ratings available	—		—		11,449		11,449
Other corporate debt, NRSRO ratings not available	—		—		2,727		2,727
Residential mortgage-backed securities	—		235,614		—		235,614
Agency commercial mortgage-backed securities	—		27,475		—		27,475
Other commercial mortgage-backed securities	—		61,390		—		61,390
Other asset-backed securities	—		67,455		6,814		74,269
Equity securities
Financial	81,536		—		—		81,536
Utilities/Energy	32,350		—		—		32,350
Consumer oriented	66,461		—		—		66,461
Industrial	57,262		—		—		57,262
All other	15,932		—		—		15,932
Short-term investments	248,605						248,605
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	—		—		72,062		72,062
Total assets	$	502,146	$	3,089,721	$	100,390	$	3,692,257

The fair values for securities included in the Level 2 category, with the few exceptions described below, were developed by one of several third party, nationally recognized pricing services, including services that price only certain types of securities. Each service uses complex methodologies to determine values for securities and subject the values they develop to quality control reviews. Management selected a primary source for each type of security in the portfolio, and reviewed the values provided for reasonableness by comparing data to alternate pricing services and to available market and trade data. Values that appeared inconsistent were further reviewed for appropriateness. If a value did not appear reasonable, the valuation was discussed with the service that provided the value and would have been adjusted, if necessary. No such adjustments were necessary in 2014 or 2013.

Level 2 Valuations

Below is a summary description of the valuation methodologies primarily used by the pricing services for securities in the Level 2 category, by security type:

U.S. Treasury obligations were valued based on quoted prices for identical assets, or, in markets that are not active, quotes for similar assets, taking into consideration adjustments for variations in contractual cash flows and yields to maturity.

U.S. Government-sponsored enterprise obligations were valued using pricing models that consider current and historical market data, normal trading conventions, credit ratings, and the particular structure and characteristics of the security being valued, such as yield to maturity, redemption options, and contractual cash flows. Adjustments to model inputs or model results were included in the valuation process when necessary to reflect recent regulatory, government or corporate actions or significant economic, industry or geographic events affecting the security’s fair value.

State and municipal bonds were valued using a series of matrices that considered credit ratings, the structure of the security, the sector in which the security falls, yields, and contractual cash flows. Valuations were further adjusted, when necessary, to reflect recent significant economic or geographic events or ratings changes affecting the security’s fair value.

Corporate debt with multiple observable inputs consisted primarily of corporate bonds, but also included a small number of bank loans. The methodology used to value Level 2 corporate bonds was the same as the methodology previously described for U.S. Government-sponsored enterprise obligations. Bank loans were valued by an outside vendor based upon a widely distributed, loan-specific listing of average bid and ask prices published daily by an investment industry group. The publisher of the listing derived the averages from data received from multiple market-makers for bank loans.

Residential and commercial mortgage backed securities. Agency pass-through securities were valued using a matrix, considering the issuer type, coupon rate and longest cash flows outstanding. The matrix was developed daily based on available market information. Agency and non-agency collateralized mortgage obligations were both valued using models that consider the structure of the security, current and historical information regarding prepayment speeds, ratings and ratings updates, and current and historical interest rate and interest rate spread data. Valuations of Alt-A mortgages included a review of collateral performance data, which is generally updated monthly.

Other asset-backed securities were valued using models that consider the structure of the security, monthly payment information, current and historical information regarding prepayment speeds, ratings and ratings updates, and current and historical interest rate and interest rate spread data. Spreads and prepayment speeds considered collateral type. Valuations of subprime home equity loans used the same valuation methodology as previously described for Alt-A mortgages.

Short-term investments are securities maturing within one year, carried at cost which approximated the fair value of the security due to the short term to maturity.

Other investments consisted primarily of convertible bond securities. Convertible bonds were valued using a pricing model that incorporated selected dealer quotes as well as real-time market data including equity prices and risk free rates. If dealer quotes were unavailable for the security being valued, quotes for securities with similar terms and credit status were used in the pricing model. Dealer quotes selected for use were those considered most accurate based on parameters such as underwriter status and historical reliability.

Level 3 Valuations

Below is a summary description of the valuation processes and methodologies used as well as quantitative information regarding securities in the Level 3 category.

Level 3 Valuation Processes

• Level 3 securities are priced by the Chief Investment Officer.

• Level 3 valuations are computed quarterly. Prices are evaluated quarterly against prior period prices and the expected change in price.

• Exclusive of Investments in unconsolidated subsidiaries, which are valued at net asset value (NAV), the securities noted in the disclosure are primarily NRSRO rated debt instruments for which comparable market inputs are commonly available for evaluating the securities in question. Valuation of these debt instruments is not overly sensitive to changes in the unobservable inputs used.

Level 3 Valuation Methodologies

State and municipal bonds consisted of auction rate municipal bonds valued internally using either published quotes for similar securities or values produced by discounted cash flow models using yields currently available on fixed rate securities with a similar term and collateral, adjusted to consider the effect of a floating rate and a premium for illiquidity. At September 30, 2014, 100% of the securities were rated; the average rating was A.

Corporate debt with limited observable inputs consisted of corporate bonds valued using dealer quotes for similar securities or discounted cash flow models using yields currently available for similar securities. Similar securities are defined as securities having like terms and payment features that are of comparable credit quality. Assessments of credit quality were based on NRSRO ratings, if available, or were subjectively determined by management if not available. At September 30, 2014, the average rating of rated securities was A-.

Other asset-backed securities consisted of securitizations of receivables valued using dealer quotes for similar securities or discounted cash flow models using yields currently available for similar securities.

Investment in unconsolidated subsidiaries consisted of limited partnership (LP) and limited liability company (LLC) interests valued using the NAV provided by the LP/LLC, which approximated the fair value of the interest.

Such interests include the following:

	Unfunded Commitments	Fair Value
(In thousands)	September 30, 2014	September 30, 2014		December 31, 2013
Investments in LPs/LLCs:
Secured debt fund (1)	$16,200	$	23,896	$	13,233
Long equity fund (2)	None	7,034		6,574
Long/Short equity funds (3)	None	25,016		28,385
Non-public equity funds (4)	$71,518	42,818		23,870
Multi-strategy fund of funds (5)	None	8,263		—
Structured credit fund (6)	None	3,766		—
		$	110,793	$	72,062

(1) The LP is structured to provide income and capital appreciation primarily through investments in senior secured debt. Redemptions are not allowed. Income and capital are to be periodically distributed at the discretion of the LP over an anticipated time frame that spans from 7 to 9 years.

(2) The LP holds long equities of public international companies. Redemptions are allowed at the end of any calendar month with a prior notice requirement of 15 days and are paid within 10 days of the end of the calendar month of the redemption request.

(3) Comprised of interests in multiple unrelated LP funds. The funds hold primarily long and short North American equities, and target absolute returns using strategies designed to take advantage of event-driven market opportunities. The funds generally permit quarterly or semi-annual redemptions of the investors’ existing capital balance with notice requirements of 30 to 90 days. For some funds, redemptions above specified thresholds (lowest threshold is 90%) may be only partially payable until after a fund audit is completed and are then payable within 30 days.

(4) Comprised of interests in three unrelated LP funds, each structured to provide capital appreciation through diversified investments in private equity, which can include investments in buyout, venture capital, mezzanine debt, distressed debt and other private equity-oriented LPs. One LP allows redemption by special consent; the others do not permit redemption. Income and capital are to be periodically distributed at the discretion of the LP over time frames that are anticipated to span from 4 to 12 years.

(5) The LLC is structured to build and manage low volatility, multi-manager portfolios that have little or no correlation to the broader fixed income and equity security markets. Redemptions are not permitted but the LLC Board is permitted discretion to periodically extend offers to repurchase units of the LLC.

(6) The LP seeks to obtain superior risk-adjusted absolute returns by acquiring and actively managing a diversified portfolio of debt securities, including bonds, loans and other asset-backed instruments. Redemptions are allowed at any quarter-end with a prior notice requirement of 90 days.

ProAssurance may not sell, transfer or assign its interest in any of the above LPs/LLCs without special consent from the LPs/LLCs.

Quantitative Information Regarding Level 3 Valuations

Quantitative Information about Level 3 Fair Value Measurements
	Fair Value at
(In millions)	September 30, 2014	December 31, 2013	Valuation Technique	Unobservable Input	Range (Weighted Average)
Assets:
State and municipal bonds	$5.6	$7.3	Market Comparable Securities	Comparability Adjustment	0% - 10% (5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 10% (5%)
Corporate debt with limited observable inputs	$13.4	$14.2	Market Comparable Securities	Comparability Adjustment	0% - 5% (2.5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 5% (2.5%)
Other asset-backed securities	$4.8	$6.8	Market Comparable Securities	Comparability Adjustment	0% - 5% (2.5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 5% (2.5%)

The significant unobservable inputs used in the fair value measurement of the above listed securities were the valuations of comparable securities with similar issuers, credit quality and maturity. Changes in the availability of comparable securities could result in changes in the fair value measurements.

Fair Value Measurements - Level 3 Assets

The following tables (the Level 3 Tables) present summary information regarding changes in the fair value of assets measured at fair value using Level 3 inputs.

	September 30, 2014
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance June 30, 2014	$	—	$	7,148		$	14,544		$	5,960		$	101,342		$	128,994
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		(4		)	16			—			—			12
Equity in earnings of unconsolidated subsidiaries	—		—			—			—			(683		)	(683		)
Net realized investment gains (losses)	—		—			—			—			—			—
Included in other comprehensive income	—		(76		)	35			(6		)	—			(47		)
Purchases	—		—			(499		)	—			12,055			11,556
Sales	—		(1,474		)	(661		)	—			(1,921		)	(4,056		)
Transfers in	—		—			—			—			—			—
Transfers out	—		—			—			(1,181		)	—			(1,181		)
Balance September 30, 2014	$	—	$	5,594		$	13,435		$	4,773		$	110,793		$	134,595
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—		$	—		$	—		$	(683	)	$	(683	)

	September 30, 2014
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations			State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance December 31, 2013	$	—		$	7,338		$	14,176		$	6,814		$	72,062		$	100,390
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—			(10		)	48			—			—			38
Equity in earnings of unconsolidated subsidiaries	—			—			—			—			5,413			5,413
Net realized investment gains (losses)	—			(95		)	3			—			—			(92		)
Included in other comprehensive income	1			(34		)	702			63			—			732
Purchases	1,000			1,861			2,000			3,340			37,430			45,631
Sales	—			(1,731		)	(1,469		)	(61		)	(4,112		)	(7,373		)
Transfers in	—			2,119			—			305			—			2,424
Transfers out	(1,001		)	(3,854		)	(2,025		)	(5,688		)	—			(12,568		)
Balance September 30, 2014	$	—		$	5,594		$	13,435		$	4,773		$	110,793		$	134,595
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—		$	—		$	—		$	—		$	5,413		$	5,413

	September 30, 2013
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds		Corporate Debt			Asset-backed Securities		Investment in Unconsolidated Subsidiaries			Total
Balance June 30, 2013	$	—	$	5,025	$	11,359		$	4,679	$	44,549		$	65,612
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		—		(1		)	—		—			(1		)
Equity in earnings of unconsolidated subsidiaries	—		—		—			—		1,301			1,301
Net realized investment gains (losses)	—		—		—			—		—			—
Included in other comprehensive income	—		—		(221		)	16		—			(205		)
Purchases	—		—		—			—		2,354			2,354
Sales	—		—		(503		)	—		(3,548		)	(4,051		)
Transfers in	—		—		100			—		—			100
Transfers out	—		—		—			—		—			—
Balance September 30, 2013	$	—	$	5,025	$	10,734		$	4,695	$	44,656		$	65,110
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—	$	—		$	—	$	1,301		$	1,301

	September 30, 2013
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance December 31, 2012	$	—	$	7,175		$	15,191		$	4,035		$	33,739		$	60,140
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		—			(103		)	(17		)	—			(120		)
Equity in earnings of unconsolidated subsidiaries	—		—			—			—			3,582			3,582
Net realized investment gains (losses)	—		(44		)	(69		)	—			—			(113		)
Included in other comprehensive income	—		—			(514		)	(81		)	—			(595		)
Purchases	—		—			7,470			1,356			20,975			29,801
Sales	—		(2,106		)	(1,368		)	(18		)	(13,640		)	(17,132		)
Transfers in	—		—			100			1,701			—			1,801
Transfers out	—		—			(9,973		)	(2,281		)	—			(12,254		)
Balance September 30, 2013	$	—	$	5,025		$	10,734		$	4,695		$	44,656		$	65,110
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—		$	—		$	—		$	3,582		$	3,582

Transfers

There were no transfers between the Level 1 and Level 2 categories during the three and nine months endedSeptember 30, 2014 or 2013.

Transfers shown in the preceding Level 3 Tables were as of the end of the period and were to or from Level 2, unless otherwise noted.

All transfers during the three and nine months endedSeptember 30, 2014 and September 30, 2013 related to securities held for which the level of market activity for identical or nearly identical securities varies from period to period. The securities were valued using multiple observable inputs when those inputs were available; otherwise the securities were valued using limited observable inputs.

Financial Instruments - Methodologies Other Than Fair Value

The following table provides the estimated fair value of our financial instruments that, in accordance with GAAP for the type of investment, are measured using a methodology other than fair value. All fair values provided fall within the Level 3 fair value category.

	September 30, 2014				December 31, 2013
(In thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial assets:
BOLI	$	55,918	$	55,918	$	54,374	$	54,374
Other investments	61,952		63,247		52,240		51,833
Other assets	21,298		21,248		17,940		17,940
Financial liabilities:
Senior notes due 2023	$	250,000	$	273,750	$	250,000	$	262,500
Other liabilities	14,022		14,139		13,303		13,303

The fair value of the BOLI was equal to the cash surrender value associated with the policies on the valuation date.

Other investments listed in the table above include interests in certain investment fund LPs/LLCs accounted for using the cost method, investments in Federal Home Loan Bank (FHLB) common stock carried at cost, and an annuity investment carried at amortized cost. The estimated fair value of the LP/LLC interests was based on the NAVs provided by the LP/LLC managers. The estimated fair value of the FHLB common stock was based on the amount ProAssurance would receive if its membership were canceled, as the membership cannot be sold. The fair value of the annuity represents the present value of the expected future cash flows discounted using a rate available in active markets for similarly structured instruments.

Other assets and Other liabilities primarily consisted of related investment assets and liabilities associated with funded deferred compensation agreements. Fair values of the funded deferred compensation assets and liabilities were based on the NAVs of the underlying securities. Other assets also included a secured note receivable and an unsecured receivable under a revolving credit agreement. Fair value of these receivables was based on the present value of expected cash flows from the receivables, discounted at market rates on the valuation date for receivables with similar credit standings and similar payment structures. Other liabilities also included certain contractual liabilities related to prior business combinations. The fair values of the business combination liabilities were based on the present value of the expected future cash outflows, discounted at ProAssurance’s assumed incremental borrowing rate on the valuation date for unsecured liabilities with similar repayment structures.

The fair value of the long-term debt was estimated based on the present value of expected future cash outflows, discounted at rates available on the valuation date for similar debt issued by entities with a similar credit standing to ProAssurance.

XML

Investments (Details 4) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Investments in LPs/LLCs [Member]
Investments held in an unrealized loss position
Other Investments, Investments in LPs/LLCs carried at cost, Fair Value	$ 17,106	$ 14,752
Other Investments, Investments in LPs/LLCs carried at cost, Unrealized Loss	582	1,059
Other investments, Investments in LPs/LLCs carried at cost, Less than Twelve Months, Fair Value	15,458	13,166
Other Investments, Investments in LPs/LLCs carried at cost, Less than 12 Months, Unrealized Losses	577	1,018
Other Investments, Investments in LPs/LLCs carried at cost, Twelve Months or Longer, Fair Value	1,648	1,586
Other Investments, Investments in LPs/LLCs carried at cost, 12 Months or Longer, Unrealized Losses	5	41
U.S. Treasury obligations [Member]
Investments held in an unrealized loss position
Fair Value	59,770	47,668
Unrealized Loss	1,215	1,519
Less than 12 months, Fair Value	37,309	44,304
Less than 12 months, Unrealized Loss	534	1,182
More than 12 months, Fair Value	22,461	3,364
More than 12 months, Unrealized Loss	681	337
US Government-sponsored Enterprises Debt Securities [Member]
Investments held in an unrealized loss position
Fair Value	7,887	6,640
Unrealized Loss	223	425
Less than 12 months, Fair Value	2,136	5,752
Less than 12 months, Unrealized Loss	22	321
More than 12 months, Fair Value	5,751	888
More than 12 months, Unrealized Loss	201	104
State and municipal bonds [Member]
Investments held in an unrealized loss position
Fair Value	71,155	203,970
Unrealized Loss	699	7,927
Less than 12 months, Fair Value	32,129	184,401
Less than 12 months, Unrealized Loss	128	6,640
More than 12 months, Fair Value	39,026	19,569
More than 12 months, Unrealized Loss	571	1,287
Corporate debt [Member]
Investments held in an unrealized loss position
Fair Value	477,806	349,277
Unrealized Loss	9,175	13,744
Less than 12 months, Fair Value	372,670	324,510
Less than 12 months, Unrealized Loss	5,909	12,061
More than 12 months, Fair Value	105,136	24,767
More than 12 months, Unrealized Loss	3,266	1,683
Residential mortgage-backed securities [Member]
Investments held in an unrealized loss position
Fair Value	66,143	93,608
Unrealized Loss	1,220	2,855
Less than 12 months, Fair Value	26,012	84,045
Less than 12 months, Unrealized Loss	105	2,393
More than 12 months, Fair Value	40,131	9,563
More than 12 months, Unrealized Loss	1,115	462
Agency commercial mortgage-backed securities [Member]
Investments held in an unrealized loss position
Fair Value	10,432	11,658
Unrealized Loss	64	136
Less than 12 months, Fair Value	8,536	11,082
Less than 12 months, Unrealized Loss	8	116
More than 12 months, Fair Value	1,896	576
More than 12 months, Unrealized Loss	56	20
Other commercial mortgage-backed securities [Member]
Investments held in an unrealized loss position
Fair Value	14,592	11,153
Unrealized Loss	117	167
Less than 12 months, Fair Value	7,528	10,215
Less than 12 months, Unrealized Loss	33	159
More than 12 months, Fair Value	7,064	938
More than 12 months, Unrealized Loss	84	8
Other asset-backed securities [Member]
Investments held in an unrealized loss position
Fair Value	39,328	25,539
Unrealized Loss	169	324
Less than 12 months, Fair Value	35,269	21,804
Less than 12 months, Unrealized Loss	77	77
More than 12 months, Fair Value	4,059	3,735
More than 12 months, Unrealized Loss	92	247
Debt Securities [Member]
Investments held in an unrealized loss position
Fair Value	747,113	749,513
Unrealized Loss	12,882	27,097
Less than 12 months, Fair Value	521,589	686,113
Less than 12 months, Unrealized Loss	6,816	22,949
More than 12 months, Fair Value	225,524	63,400
More than 12 months, Unrealized Loss	$ 6,066	$ 4,148

XML

Business Combinations (Details 1) (Eastern Insurance Holdings [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	Jan. 01, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value on Acquisition Date	$ 50.0
Estimated Useful Life, Weighted Average Useful Life	13 years	[1]
Agency relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value on Acquisition Date	27.0
Estimated Useful Life	15 years
Policyholder relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value on Acquisition Date	8.0
Estimated Useful Life	15 years
Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value on Acquisition Date	8.0
Estimated Useful Life	15 years
Noncompete agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value on Acquisition Date	$ 7.0
Estimated Useful Life	3 years

[1] Reflects the weighted average estimated useful life of acquired intangible assets that are subject to amortization.

XML

Business Combinations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Jan. 01, 2014 Eastern Insurance Holdings [Member]	Jan. 01, 2014 Eastern Insurance Holdings [Member]
Business Acquisition [Line Items]
Fixed maturities, available for sale							$ 107,131
Equity securities, trading							65,945
Cash and short-term investments							58,944
Other investments							42,133
Premiums receivable							71,989
Receivable from reinsurers on paid and unpaid losses and LAE							18,942
Intangible assets							59,000
Deferred policy acquisition costs (see discussion below)							10,593
Other assets							19,225
Reserve for losses and loss adjustment expenses							(153,191)
Unearned premiums							(80,268)
Ceded balances payable							(9,507)
Segregated portfolio cells dividends payable							(14,430)
Deferred tax liabilities, net							(12,835)
Other liabilities							(28,038)
Fair value of net assets acquired							155,633
Goodwill	210,725		210,725		161,115		49,610
Total purchase consideration						205,243
ProAssurance Consolidated results
ProAssurance Pro Forma Consolidated Results, Revenue	203,833	229,608	634,330	686,391
ProAssurance Pro Forma Consolidated Results, Net Income	34,759	66,868	132,451	233,666
ProAssurance Actual Consolidated Results, Revenue	203,833	181,486	634,330	547,265
ProAssurance Actual Consolidated Results, Net Income	$ 34,778	$ 63,357	$ 131,451	$ 226,658

XML

Variable Interest Entities (Details) (Variable Interest Entity, Not Primary Beneficiary [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other Investments [Member]
Variable Interest Entity [Line Items]
VIE interests carrying value	$ 37.6	$ 27.3
VIE interest maximum loss exposure	37.6
Investment in unconsolidated subsidiaries [Member]
Variable Interest Entity [Line Items]
VIE interests carrying value	58.1	49.5
VIE interest maximum loss exposure	$ 58.1

XML

Investments (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net Investment Income
Investment fees and expenses	$ (1,712)	$ (1,810)	$ (6,360)	$ (5,427)
Net investment income	32,830	33,889	92,788	99,282
Fixed maturities [Member]
Net Investment Income
Investment Income	28,442	30,672	85,402	93,687
Equities [Member]
Net Investment Income
Investment Income	2,661	2,394	7,479	7,000
Short-term investments and Other invested assets [Member]
Net Investment Income
Investment Income	2,793	2,000	4,723	2,514
Business owned life insurance [Member]
Net Investment Income
Investment Income	$ 646	$ 633	$ 1,544	$ 1,508

XML

Business Combinations (Details 2) (Eastern Insurance Holdings [Member], Insurance license agreements [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	Jan. 01, 2014
Eastern Insurance Holdings [Member] | Insurance license agreements [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Estimated Fair Value on Acquisition Date	$ 9.0

XML

Business Combinations (Details Textual) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jan. 01, 2014	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Jan. 01, 2014
Business Acquisition [Line Items]
Goodwill		$ 210,725,000	$ 210,725,000	$ 161,115,000
Eastern Insurance Holdings [Member]
Business Acquisition [Line Items]
Voting interests acquired					100.00%
Business acquisition cash paid	205,243,000
Expenses related to the purchase of business			2,100,000	900,000
Goodwill					49,610,000
Risk premium used in determining underlying net cash flows for fair value of acquired assets/liabilities					9,300,000
Amortization period of fair value estimate of Acquired Reserves for Losses and related reinsurance recoverables	6 years
Revenue since acquisition date		49,600,000	149,900,000
Earnings since acquisition date		$ 1,700,000	$ 7,100,000

XML

Business Combinations

9 Months Ended

Sep. 30, 2014

Business Combinations [Abstract]

Business Combinations

Business Combinations

All entities acquired in 2014 were accounted for in accordance with GAAP relating to business combinations.

On January 1, 2014, ProAssurance completed the acquisition of Eastern by purchasing 100% of its outstanding common shares for cash of $205 million. Eastern is based in Lancaster, Pennsylvania and specializes in workers' compensation insurance and reinsurance products and services, including alternative market solutions. ProAssurance incurred expenses related to the purchase of approximately $2.1 million during the first nine months of 2014 and approximately $0.9 million during the year ended December 31, 2013. These expenses were included as a part of operating expenses in the periods incurred.

The purchase consideration for Eastern was allocated to the assets acquired and liabilities assumed based on their estimated fair values on the acquisition date. Goodwill of $49.6 million was recognized equal to the excess of the purchase price over the net fair value of identifiable assets acquired and liabilities assumed. Factors contributing to the recognition of goodwill include strategic and synergistic benefits that are expected to be realized as a result of the acquisition. These benefits include insurance market diversification, expanded access to alternative markets, and opportunities to reach additional insureds in the healthcare market by being a single source provider of a suite of insurance products. None of the goodwill is expected to be tax deductible. The allocation of purchase consideration is shown in the table below.

(In thousands)
Fixed maturities, available for sale	$	107,131
Equity securities, trading	65,945
Cash and short-term investments	58,944
Other investments	42,133
Premiums receivable	71,989
Receivable from reinsurers on paid and unpaid losses and LAE	18,942
Intangible assets	59,000
Deferred policy acquisition costs (see discussion below)	10,593
Other assets	19,225
Reserve for losses and loss adjustment expenses	(153,191		)
Unearned premiums	(80,268		)
Ceded balances payable	(9,507		)
Segregated portfolio cells dividends payable	(14,430		)
Deferred tax liabilities, net	(12,835		)
Other liabilities	(28,038		)
Fair value of net assets acquired	$	155,633
Goodwill	49,610
Total purchase consideration	$	205,243

Intangible assets acquired included the following:

(In millions)	Estimated Fair Value on Acquisition Date	Estimated Useful Life
Agency relationships	$27.0	15
Policyholder relationships	8.0	15
Trade names	8.0	15
Non-compete agreements	7.0	3
Total intangibles subject to amortization	$50.0	13	*
Insurance license agreements	$9.0	Indefinite

* Reflects the weighted average estimated useful life of acquired intangible assets that are subject to amortization.

ProAssurance's fair value estimate of the value of business acquired (VOBA), calculated as the present value of future earnings expected from the insurance contracts acquired, approximated the carrying value of Eastern's asset for deferred policy acquisition costs as of the acquisition date. Consequently, Eastern's asset for deferred policy acquisition costs was recognized in the purchase price allocation, as listed above, in lieu of recognizing an intangible asset for VOBA.

ProAssurance believes that all contractual cash flows related to acquired receivables will be collected. The fair value of the reserve for losses and loss adjustment expenses and related reinsurance recoverables was based on three components: an actuarial estimate of the expected future net cash flows, a reduction to those cash flows for the time value of money determined utilizing the U.S. Treasury Yield Curve, and a risk margin adjustment to reflect the net present value of profit that an investor would demand in return for the assumption of the development risk associated with the reserve. The fair value of the reserve, including the risk margin adjustment, exceeded the undiscounted loss reserve previously established by Eastern by $9.3 million; this fair value adjustment is being amortized over the average expected life of the reserve of 6 years as a reduction to loss expenses.

The following table provides Pro Forma Consolidated Results for the three and nine months endedSeptember 30, 2014 and 2013 as if the Eastern transaction had occurred on January 1, 2013. ProAssurance Actual Consolidated Results have been adjusted by the following, net of related tax effects, to reflect the Pro Forma Consolidated Results below.

• For the three and nine months endedSeptember 30, 2013, ProAssurance 2013 Actual Consolidated Results, which did not include Eastern, have been adjusted to include Eastern's 2013 operating results. ProAssurance Actual Consolidated Results for the three and nine months endedSeptember 30, 2014 included Eastern's operating results (Revenue of $49.6 million and $149.9 million, respectively, and Net income of $1.7 million and $7.1 million, respectively).

• Certain costs included in ProAssurance actual results for the three and nine months endedSeptember 30, 2014 have been reported in the Pro Forma Consolidated Results as if the costs had been incurred for the three and nine months endedSeptember 30, 2013. Such costs include direct transaction costs and certain compensation costs directly related to the integration of Eastern operations.

• Actual Consolidated Results for the three and nine months endedSeptember 30, 2013, were reduced to reflect amortization of intangible assets and debt security premiums and discounts recorded as a part of the Eastern purchase price allocation.

	Three Months Ended September 30, 2014		Nine Months Ended September 30, 2014
(In thousands)	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results
Revenue	$203,833	$203,833	$634,330	$634,330
Net income	$34,759	$34,778	$132,451	$131,451
	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
(In thousands)	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results
Revenue	$229,608	$181,486	$686,391	$547,265
Net income	$66,868	$63,357	$233,666	$226,658

XML

Fair Value Measurement (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets:
Equity securities	$ 306,631	$ 253,541
Level 3 [Member] | State and municipal bonds [Member]
Financial instruments carried at fair value, classified as a part of:
Total assets	5,600	7,300
Level 3 [Member] | Other asset-backed securities [Member]
Financial instruments carried at fair value, classified as a part of:
Total assets	4,800	6,800
Fair Value, Measurements, Recurring [Member]
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	110,793	72,062
Other Investments	30,058
Total assets	3,789,275	3,692,257
Fair Value, Measurements, Recurring [Member] | U.S. Treasury obligations [Member]
Assets:
Fixed maturities, available for sale	176,813	170,714
Fair Value, Measurements, Recurring [Member] | U.S. Government-sponsored enterprise obligations [Member]
Assets:
Fixed maturities, available for sale	43,966	32,768
Fair Value, Measurements, Recurring [Member] | State and municipal bonds [Member]
Assets:
Fixed maturities, available for sale	1,087,634	1,154,666
Fair Value, Measurements, Recurring [Member] | Corporate debt, multiple observable inputs [Member]
Assets:
Fixed maturities, available for sale	1,459,550	1,346,977
Fair Value, Measurements, Recurring [Member] | Other corporate debt, NRSRO ratings available [Member]
Assets:
Fixed maturities, available for sale	10,793	11,449
Fair Value, Measurements, Recurring [Member] | Other corporate debt, NRSRO ratings not available [Member]
Assets:
Fixed maturities, available for sale	2,642	2,727
Fair Value, Measurements, Recurring [Member] | Residential mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	290,314	235,614
Fair Value, Measurements, Recurring [Member] | Agency commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	16,893	27,475
Fair Value, Measurements, Recurring [Member] | Other commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	57,323	61,390
Fair Value, Measurements, Recurring [Member] | Other asset-backed securities [Member]
Assets:
Fixed maturities, available for sale	100,892	74,269
Fair Value, Measurements, Recurring [Member] | Financial [Member]
Assets:
Equity securities	75,141	81,536
Fair Value, Measurements, Recurring [Member] | Utilities/Energy [Member]
Assets:
Equity securities	26,551	32,350
Fair Value, Measurements, Recurring [Member] | Consumer oriented [Member]
Assets:
Equity securities	64,912	66,461
Fair Value, Measurements, Recurring [Member] | Industrial [Member]
Assets:
Equity securities	54,912	57,262
Fair Value, Measurements, Recurring [Member] | Bond funds [Member]
Assets:
Equity securities	53,178
Fair Value, Measurements, Recurring [Member] | All other [Member]
Assets:
Equity securities	31,937	15,932
Fair Value, Measurements, Recurring [Member] | Short-term Investments [Member]
Assets:
Short-term investments	94,973	248,605
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	0	0
Other Investments	4,830
Total assets	405,784	502,146
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. Treasury obligations [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. Government-sponsored enterprise obligations [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | State and municipal bonds [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Corporate debt, multiple observable inputs [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other corporate debt, NRSRO ratings available [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other corporate debt, NRSRO ratings not available [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Residential mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Agency commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other asset-backed securities [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Financial [Member]
Assets:
Equity securities	75,141	81,536
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Utilities/Energy [Member]
Assets:
Equity securities	26,551	32,350
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Consumer oriented [Member]
Assets:
Equity securities	64,912	66,461
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Industrial [Member]
Assets:
Equity securities	54,912	57,262
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Bond funds [Member]
Assets:
Equity securities	53,178
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | All other [Member]
Assets:
Equity securities	31,937	15,932
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Short-term Investments [Member]
Assets:
Short-term investments	94,323	248,605
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	0	0
Other Investments	25,228
Total assets	3,248,896	3,089,721
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. Treasury obligations [Member]
Assets:
Fixed maturities, available for sale	176,813	170,714
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. Government-sponsored enterprise obligations [Member]
Assets:
Fixed maturities, available for sale	43,966	32,768
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | State and municipal bonds [Member]
Assets:
Fixed maturities, available for sale	1,082,040	1,147,328
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate debt, multiple observable inputs [Member]
Assets:
Fixed maturities, available for sale	1,459,550	1,346,977
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other corporate debt, NRSRO ratings available [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other corporate debt, NRSRO ratings not available [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Residential mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	290,314	235,614
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Agency commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	16,893	27,475
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	57,323	61,390
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other asset-backed securities [Member]
Assets:
Fixed maturities, available for sale	96,119	67,455
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Financial [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Utilities/Energy [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Consumer oriented [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Industrial [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Bond funds [Member]
Assets:
Equity securities	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | All other [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Short-term Investments [Member]
Assets:
Short-term investments	650
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	110,793	72,062
Other Investments	0
Total assets	134,595	100,390
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. Treasury obligations [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. Government-sponsored enterprise obligations [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | State and municipal bonds [Member]
Assets:
Fixed maturities, available for sale	5,594	7,338
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Corporate debt, multiple observable inputs [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other corporate debt, NRSRO ratings available [Member]
Assets:
Fixed maturities, available for sale	10,793	11,449
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other corporate debt, NRSRO ratings not available [Member]
Assets:
Fixed maturities, available for sale	2,642	2,727
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Residential mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Agency commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other commercial mortgage-backed securities [Member]
Assets:
Fixed maturities, available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other asset-backed securities [Member]
Assets:
Fixed maturities, available for sale	4,773	6,814
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Utilities/Energy [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Consumer oriented [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Industrial [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Bond funds [Member]
Assets:
Equity securities	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | All other [Member]
Assets:
Equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Short-term Investments [Member]
Assets:
Short-term investments	$ 0

XML

Investments (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
U.S. Treasury obligations [Member]
Fixed maturities, available for sale
Amortized Cost	$ 173,632	$ 166,115
Due in one year or less	19,612
Due after one year through five years	104,211
Due after five years through ten years	48,950
Due after ten years	4,040
Estimated Fair Value	176,813	170,714
U.S. Government-sponsored enterprise obligations [Member]
Fixed maturities, available for sale
Amortized Cost	42,480	30,942
Due in one year or less	8,002
Due after one year through five years	25,465
Due after five years through ten years	10,160
Due after ten years	339
Estimated Fair Value	43,966	32,768
State and municipal bonds [Member]
Fixed maturities, available for sale
Amortized Cost	1,038,278	1,116,060
Due in one year or less	49,169
Due after one year through five years	393,569
Due after five years through ten years	442,212
Due after ten years	202,684
Estimated Fair Value	1,087,634	1,154,666
Corporate debt [Member]
Fixed maturities, available for sale
Amortized Cost	1,433,266	1,321,838
Due in one year or less	157,683
Due after one year through five years	694,254
Due after five years through ten years	598,183
Due after ten years	22,865
Estimated Fair Value	1,472,985	1,361,153
Residential mortgage-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	282,717	230,861
Estimated Fair Value	290,314	235,614
Agency commercial mortgage-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	16,785	27,268
Estimated Fair Value	16,893	27,475
Other commercial mortgage-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	55,853	59,066
Estimated Fair Value	57,323	61,390
Other asset-backed securities [Member]
Fixed maturities, available for sale
Amortized Cost	100,715	74,106
Estimated Fair Value	100,892	74,269
Debt Securities [Member]
Fixed maturities, available for sale
Amortized Cost	3,143,726	3,026,256
Estimated Fair Value	$ 3,246,820	$ 3,118,049

XML

Long-term Debt (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Outstanding long-term debt
Long-term debt	$ 250,000,000	$ 250,000,000
Senior Notes [Member] | Senior notes due 2023 [Member]
Outstanding long-term debt
Long-term debt	250,000,000	250,000,000
Interest rate on Senior Notes	5.30%
Line of Credit [Member] | Revolving Credit Agreement [Member]
Outstanding long-term debt
Long-term debt	0	0
Maximum outstanding borrowings under revolving credit agreement	$ 200,000,000

XML

Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Investments
Fixed maturities, available for sale, at fair value; amortized cost, $3,143,726 and $3,026,256, respectively	$ 3,246,820	$ 3,118,049
Equity securities, trading, at fair value; cost, $274,324 and $203,308, respectively	306,631	253,541
Short-term investments	94,973	248,605
Business owned life insurance	55,918	54,374
Investment in unconsolidated subsidiaries	254,962	214,236
Other investments, $30,058 at fair value at September 30, 2014, otherwise at cost or amortized cost	92,010	52,240
Total Investments	4,051,314	3,941,045
Cash and cash equivalents	248,005	129,383
Restricted cash	0	78,000
Premiums receivable	229,798	115,403
Receivable from reinsurers on paid losses and loss adjustment expenses	9,918	3,231
Receivable from reinsurers on unpaid losses and loss adjustment expenses	251,605	247,518
Prepaid reinsurance premiums	36,286	21,449
Deferred policy acquisition costs	44,049	28,207
Deferred tax asset	0	1,757
Real estate, net	40,116	41,010
Intangible assets	103,224	52,002
Goodwill	210,725	161,115
Other assets	100,957	329,979
Total Assets	5,325,997	5,150,099
Policy liabilities and accruals
Reserve for losses and loss adjustment expenses	2,146,018	2,072,822
Unearned premiums	391,296	255,463
Reinsurance premiums payable	32,314	34,321
Total Policy Liabilities	2,569,628	2,362,606
Deferred tax liability	21,062	0
Other liabilities	164,095	143,079
Long-term debt	250,000	250,000
Total Liabilities	3,004,785	2,755,685
Shareholders’ Equity
Common shares, par value $0.01 per share, 100,000,000 shares authorized, 62,283,426 and 62,096,787 shares issued, respectively	623	621
Additional paid-in capital	357,779	349,894
Accumulated other comprehensive income (loss), net of deferred tax expense (benefit) of $35,591 and $32,127, respectively	67,007	59,661
Retained earnings	2,094,181	2,015,603
Treasury shares, at cost, 4,596,000 shares and 900,281 shares, respectively	(198,378)	(31,365)
Total Shareholders’ Equity	2,321,212	2,394,414
Total Liabilities and Shareholders’ Equity	$ 5,325,997	$ 5,150,099

XML

Investments (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment (OTTI) losses	$ (1,425)	$ 0	$ (1,475)	$ (71)
Portion of OTTI losses recognized in (reclassified from) other comprehensive income before taxes	268	0	268	0
Net impairments recognized in earnings	(1,157)	0	(1,207)	(71)
Gross realized gains, available-for-sale securities	736	7,708	3,711	14,631
Gross realized (losses), available-for-sale securities	(52)	(5,305)	(371)	(6,269)
Net realized gains (losses), trading securities	3,227	5,818	21,830	14,650
Net realized gains (losses), Other investments	55	0	321	0
Change in unrealized holding gains (losses), trading securities	(10,402)	3,355	(17,906)	23,784
Change in unrealized holding gains (losses), convertible securities, carried at fair value	(538)	0	1,281	0
Other	0	924	0	925
Total net realized investment gains (losses)	(8,131)	12,500	7,659	47,650
US States and Political Subdivisions Debt Securities [Member]
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment (OTTI) losses	0	0	(50)	(71)
Corporate debt [Member]
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment (OTTI) losses	(1,425)	0	(1,425)	0
Portion of OTTI losses recognized in (reclassified from) other comprehensive income before taxes	$ 268	$ 0	$ 268	$ 0

XML

Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating Activities
Net income	$ 131,451	$ 226,658
Depreciation and amortization, net of accretion	36,286	34,364
Gain on acquisition	0	(35,986)
Net realized investment gains	(7,659)	(47,650)
Share-based compensation	8,022	6,930
Deferred income taxes	5,444	23,142
Policy acquisition costs, net amortization (net deferral)	(5,249)	(7,066)
Other	(5,980)	(8,367)
Other changes in assets and liabilities, excluding effect of business combinations:
Premiums receivable	(42,406)	(21,881)
Reinsurance related assets and liabilities	(19,829)	(1,510)
Other assets	33,823	(34,016)
Reserve for losses and loss adjustment expenses	(78,558)	(104,387)
Unearned premiums	55,565	23,574
Other liabilities	(9,827)	(29,844)
Net cash provided (used) by operating activities	101,083	23,961
Purchases of:
Fixed maturities, available for sale	(511,894)	(406,152)
Equity securities, trading	(85,986)	(73,292)
Other investments	(25,109)	(7,926)
Funding of tax credit limited partnerships	(8,439)	(58,801)
Investment in unconsolidated subsidiaries	(30,394)	(15,637)
Proceeds from sales or maturities of:
Fixed maturities, available for sale	486,702	782,612
Equity securities, trading	102,765	95,658
Other investments	15,074	2,352
Distributions from unconsolidated subsidiaries	3,850	14,564
Net sales or maturities (purchases) of short-term investments	177,013	(43,434)
Cash received in acquisitions	35,013	22,780
Unsettled security transactions, net	(127)	(2,744)
(Increase) decrease in restricted cash	78,000	0
Other	3,467	(8,253)
Net cash provided (used) by investing activities	239,935	301,727
Financing Activities
Repayment of long-term debt	0	(125,000)
Repurchase of common stock	(163,146)	(1,990)
Dividends to shareholders	(53,820)	(30,842)
Other	(5,430)	(7,356)
Net cash provided (used) by financing activities	(222,396)	(165,188)
Increase (decrease) in cash and cash equivalents	118,622	160,500
Cash and cash equivalents at beginning of period	129,383	118,551
Cash and cash equivalents at end of period	248,005	279,051
Significant non-cash transactions
Deposit transferred as consideration for acquisition	$ 205,244	$ 153,700

XML

Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Segment Reporting Information [Line Items]
Net premiums earned	$ 177,028		$ 133,598	$ 525,061		$ 398,528
Specialty P&C [Member]
Segment Reporting Information [Line Items]
Ceded premiums earned	(13,655)	[1]	(10,682)	(36,110)	[1]	(30,256)
Net premiums earned	123,791		133,598	374,704		398,528
Workers Compensation [Member]
Segment Reporting Information [Line Items]
Ceded premiums earned	(6,898)		0	(15,995)		0
Net premiums earned	49,792		0	143,960		0
Lloyds Syndicate [Member]
Segment Reporting Information [Line Items]
Ceded premiums earned	(640)		0	(713)		0
Net premiums earned	3,445		0	6,397		0
Healthcare professional liability [Member] | Specialty P&C [Member]
Segment Reporting Information [Line Items]
Gross premiums earned	120,623		128,532	361,179		382,678
Legal professional liability [Member] | Specialty P&C [Member]
Segment Reporting Information [Line Items]
Gross premiums earned	7,145		6,849	21,147		20,328
Medical technology and life sciences product liability [Member] | Specialty P&C [Member]
Segment Reporting Information [Line Items]
Gross premiums earned	9,258		8,436	27,043		24,442
Other [Member] | Specialty P&C [Member]
Segment Reporting Information [Line Items]
Gross premiums earned	420		463	1,445		1,336
Traditional business [Member] | Workers Compensation [Member]
Segment Reporting Information [Line Items]
Gross premiums earned	42,345		0	119,702		0
Alternative market business [Member] | Workers Compensation [Member]
Segment Reporting Information [Line Items]
Gross premiums earned	14,345		0	40,253		0
Property, Liability and Casualty Insurance Product Line [Member] | Lloyds Syndicate [Member]
Segment Reporting Information [Line Items]
Gross premiums earned	$ 4,085	[1]	$ 0	$ 7,110	[1]	$ 0

[1] Includes premium ceded from the Specialty P&C Segment to the Lloyd's Syndicate Segment of $1.1 million for the three months and $1.6 million for nine months ended September 30, 2014, respectively.

XML

Fair Value Measurement (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation:
Beginning Balance	$ 128,994	$ 65,612	$ 100,390	$ 60,140
Included in earnings, as a part of:
Included in other comprehensive income	(47)	(205)	732	(595)
Purchases	11,556	2,354	45,631	29,801
Sales	(4,056)	(4,051)	(7,373)	(17,132)
Transfers in	0	100	2,424	1,801
Transfers out	(1,181)	0	(12,568)	(12,254)
Ending Balance	134,595	65,110	134,595	65,110
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	(683)	1,301	5,413	3,582
U.S. Government-sponsored enterprise obligations [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation:
Beginning Balance	0	0	0	0
Included in earnings, as a part of:
Included in other comprehensive income	0	0	1	0
Purchases	0	0	1,000	0
Sales	0	0	0	0
Transfers in	0	0	0	0
Transfers out	0	0	(1,001)	0
Ending Balance	0	0	0	0
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	0	0	0	0
State and municipal bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation:
Beginning Balance	7,148	5,025	7,338	7,175
Included in earnings, as a part of:
Included in other comprehensive income	(76)	0	(34)	0
Purchases	0	0	1,861	0
Sales	(1,474)	0	(1,731)	(2,106)
Transfers in	0	0	2,119	0
Transfers out	0	0	(3,854)	0
Ending Balance	5,594	5,025	5,594	5,025
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	0	0	0	0
Corporate debt [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation:
Beginning Balance	14,544	11,359	14,176	15,191
Included in earnings, as a part of:
Included in other comprehensive income	35	(221)	702	(514)
Purchases	(499)	0	2,000	7,470
Sales	(661)	(503)	(1,469)	(1,368)
Transfers in	0	100	0	100
Transfers out		0	(2,025)	(9,973)
Ending Balance	13,435	10,734	13,435	10,734
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	0	0	0	0
Asset-backed securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation:
Beginning Balance	5,960	4,679	6,814	4,035
Included in earnings, as a part of:
Included in other comprehensive income	(6)	16	63	(81)
Purchases	0	0	3,340	1,356
Sales	0	0	(61)	(18)
Transfers in	0	0	305	1,701
Transfers out	(1,181)	0	(5,688)	(2,281)
Ending Balance	4,773	4,695	4,773	4,695
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	0	0	0	0
Investment in LPs/LLCs [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation:
Beginning Balance	101,342	44,549	72,062	33,739
Included in earnings, as a part of:
Included in other comprehensive income	0	0	0	0
Purchases	12,055	2,354	37,430	20,975
Sales	(1,921)	(3,548)	(4,112)	(13,640)
Transfers in	0	0	0	0
Transfers out	0	0	0	0
Ending Balance	110,793	44,656	110,793	44,656
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	(683)	1,301	5,413	3,582
Net investment Income [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	12	(1)	38	(120)
Net investment Income [Member] | U.S. Government-sponsored enterprise obligations [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Net investment Income [Member] | State and municipal bonds [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	(4)	0	(10)	0
Net investment Income [Member] | Corporate debt [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	16	(1)	48	(103)
Net investment Income [Member] | Asset-backed securities [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	(17)
Net investment Income [Member] | Investment in LPs/LLCs [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Equity in earnings (loss) of unconsolidated subsidiaries [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	(683)	1,301	5,413	3,582
Equity in earnings (loss) of unconsolidated subsidiaries [Member] | U.S. Government-sponsored enterprise obligations [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Equity in earnings (loss) of unconsolidated subsidiaries [Member] | State and municipal bonds [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Equity in earnings (loss) of unconsolidated subsidiaries [Member] | Corporate debt [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Equity in earnings (loss) of unconsolidated subsidiaries [Member] | Asset-backed securities [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Equity in earnings (loss) of unconsolidated subsidiaries [Member] | Investment in LPs/LLCs [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	(683)	1,301	5,413	3,582
Net realized investment gains (losses) [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	(92)	(113)
Net realized investment gains (losses) [Member] | U.S. Government-sponsored enterprise obligations [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Net realized investment gains (losses) [Member] | State and municipal bonds [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	(95)	(44)
Net realized investment gains (losses) [Member] | Corporate debt [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	3	(69)
Net realized investment gains (losses) [Member] | Asset-backed securities [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	0	0	0	0
Net realized investment gains (losses) [Member] | Investment in LPs/LLCs [Member]
Included in earnings, as a part of:
Total gains (losses) realized and unrealized, included in earnings	$ 0	$ 0	$ 0	$ 0

XML

Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value

Fair values of assets measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013, including financial instruments for which ProAssurance has elected fair value, are shown in the following tables. The tables also indicate the fair value hierarchy of the valuation techniques utilized to determine those fair values. For some assets, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. When this is the case, the asset is categorized based on the level of the most significant input to the fair value measurement. Assessments of the significance of a particular input to the fair value measurement require judgment and consideration of factors specific to the assets being valued.

	September 30, 2014
	Fair Value Measurements Using						Total
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Assets:
Fixed maturities, available for sale
U.S. Treasury obligations	$	—	$	176,813	$	—	$	176,813
U.S. Government-sponsored enterprise obligations	—		43,966		—		43,966
State and municipal bonds	—		1,082,040		5,594		1,087,634
Corporate debt, multiple observable inputs	—		1,459,550		—		1,459,550
Corporate debt, limited observable inputs:
Other corporate debt, NRSRO ratings available	—		—		10,793		10,793
Other corporate debt, NRSRO ratings not available	—		—		2,642		2,642
Residential mortgage-backed securities	—		290,314		—		290,314
Agency commercial mortgage-backed securities	—		16,893		—		16,893
Other commercial mortgage-backed securities	—		57,323		—		57,323
Other asset-backed securities	—		96,119		4,773		100,892
Equity securities
Financial	75,141		—		—		75,141
Utilities/Energy	26,551		—		—		26,551
Consumer oriented	64,912		—		—		64,912
Industrial	54,912		—		—		54,912
Bond funds	53,178		—		—		53,178
All other	31,937		—		—		31,937
Short-term investments	94,323		650		—		94,973
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	—		—		110,793		110,793
Other investments	4,830		25,228		—		30,058
Total assets	$	405,784	$	3,248,896	$	134,595	$	3,789,275

	December 31, 2013
	Fair Value Measurements Using						Total
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Assets:
Fixed maturities, available for sale
U.S. Treasury obligations	$	—	$	170,714	$	—	$	170,714
U.S. Government-sponsored enterprise obligations	—		32,768		—		32,768
State and municipal bonds	—		1,147,328		7,338		1,154,666
Corporate debt, multiple observable inputs	—		1,346,977		—		1,346,977
Corporate debt, limited observable inputs:
Other corporate debt, NRSRO ratings available	—		—		11,449		11,449
Other corporate debt, NRSRO ratings not available	—		—		2,727		2,727
Residential mortgage-backed securities	—		235,614		—		235,614
Agency commercial mortgage-backed securities	—		27,475		—		27,475
Other commercial mortgage-backed securities	—		61,390		—		61,390
Other asset-backed securities	—		67,455		6,814		74,269
Equity securities
Financial	81,536		—		—		81,536
Utilities/Energy	32,350		—		—		32,350
Consumer oriented	66,461		—		—		66,461
Industrial	57,262		—		—		57,262
All other	15,932		—		—		15,932
Short-term investments	248,605						248,605
Financial instruments carried at fair value, classified as a part of:
Investment in unconsolidated subsidiaries	—		—		72,062		72,062
Total assets	$	502,146	$	3,089,721	$	100,390	$	3,692,257

Investments in Limited liability companies and limited partnerships

Investment in unconsolidated subsidiaries consisted of limited partnership (LP) and limited liability company (LLC) interests valued using the NAV provided by the LP/LLC, which approximated the fair value of the interest.

Such interests include the following:

	Unfunded Commitments	Fair Value
(In thousands)	September 30, 2014	September 30, 2014		December 31, 2013
Investments in LPs/LLCs:
Secured debt fund (1)	$16,200	$	23,896	$	13,233
Long equity fund (2)	None	7,034		6,574
Long/Short equity funds (3)	None	25,016		28,385
Non-public equity funds (4)	$71,518	42,818		23,870
Multi-strategy fund of funds (5)	None	8,263		—
Structured credit fund (6)	None	3,766		—
		$	110,793	$	72,062

(1) The LP is structured to provide income and capital appreciation primarily through investments in senior secured debt. Redemptions are not allowed. Income and capital are to be periodically distributed at the discretion of the LP over an anticipated time frame that spans from 7 to 9 years.

(2) The LP holds long equities of public international companies. Redemptions are allowed at the end of any calendar month with a prior notice requirement of 15 days and are paid within 10 days of the end of the calendar month of the redemption request.

(3) Comprised of interests in multiple unrelated LP funds. The funds hold primarily long and short North American equities, and target absolute returns using strategies designed to take advantage of event-driven market opportunities. The funds generally permit quarterly or semi-annual redemptions of the investors’ existing capital balance with notice requirements of 30 to 90 days. For some funds, redemptions above specified thresholds (lowest threshold is 90%) may be only partially payable until after a fund audit is completed and are then payable within 30 days.

(4) Comprised of interests in three unrelated LP funds, each structured to provide capital appreciation through diversified investments in private equity, which can include investments in buyout, venture capital, mezzanine debt, distressed debt and other private equity-oriented LPs. One LP allows redemption by special consent; the others do not permit redemption. Income and capital are to be periodically distributed at the discretion of the LP over time frames that are anticipated to span from 4 to 12 years.

(5) The LLC is structured to build and manage low volatility, multi-manager portfolios that have little or no correlation to the broader fixed income and equity security markets. Redemptions are not permitted but the LLC Board is permitted discretion to periodically extend offers to repurchase units of the LLC.

(6) The LP seeks to obtain superior risk-adjusted absolute returns by acquiring and actively managing a diversified portfolio of debt securities, including bonds, loans and other asset-backed instruments. Redemptions are allowed at any quarter-end with a prior notice requirement of 90 days.

Summary of quantitative information about Level 3 fair value measurements

Quantitative Information Regarding Level 3 Valuations

Quantitative Information about Level 3 Fair Value Measurements
	Fair Value at
(In millions)	September 30, 2014	December 31, 2013	Valuation Technique	Unobservable Input	Range (Weighted Average)
Assets:
State and municipal bonds	$5.6	$7.3	Market Comparable Securities	Comparability Adjustment	0% - 10% (5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 10% (5%)
Corporate debt with limited observable inputs	$13.4	$14.2	Market Comparable Securities	Comparability Adjustment	0% - 5% (2.5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 5% (2.5%)
Other asset-backed securities	$4.8	$6.8	Market Comparable Securities	Comparability Adjustment	0% - 5% (2.5%)
			Discounted Cash Flows	Comparability Adjustment	0% - 5% (2.5%)

Summary of changes in the fair value of assets measured at fair value

The following tables (the Level 3 Tables) present summary information regarding changes in the fair value of assets measured at fair value using Level 3 inputs.

	September 30, 2014
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance June 30, 2014	$	—	$	7,148		$	14,544		$	5,960		$	101,342		$	128,994
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		(4		)	16			—			—			12
Equity in earnings of unconsolidated subsidiaries	—		—			—			—			(683		)	(683		)
Net realized investment gains (losses)	—		—			—			—			—			—
Included in other comprehensive income	—		(76		)	35			(6		)	—			(47		)
Purchases	—		—			(499		)	—			12,055			11,556
Sales	—		(1,474		)	(661		)	—			(1,921		)	(4,056		)
Transfers in	—		—			—			—			—			—
Transfers out	—		—			—			(1,181		)	—			(1,181		)
Balance September 30, 2014	$	—	$	5,594		$	13,435		$	4,773		$	110,793		$	134,595
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—		$	—		$	—		$	(683	)	$	(683	)

	September 30, 2014
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations			State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance December 31, 2013	$	—		$	7,338		$	14,176		$	6,814		$	72,062		$	100,390
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—			(10		)	48			—			—			38
Equity in earnings of unconsolidated subsidiaries	—			—			—			—			5,413			5,413
Net realized investment gains (losses)	—			(95		)	3			—			—			(92		)
Included in other comprehensive income	1			(34		)	702			63			—			732
Purchases	1,000			1,861			2,000			3,340			37,430			45,631
Sales	—			(1,731		)	(1,469		)	(61		)	(4,112		)	(7,373		)
Transfers in	—			2,119			—			305			—			2,424
Transfers out	(1,001		)	(3,854		)	(2,025		)	(5,688		)	—			(12,568		)
Balance September 30, 2014	$	—		$	5,594		$	13,435		$	4,773		$	110,793		$	134,595
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—		$	—		$	—		$	—		$	5,413		$	5,413

	September 30, 2013
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds		Corporate Debt			Asset-backed Securities		Investment in Unconsolidated Subsidiaries			Total
Balance June 30, 2013	$	—	$	5,025	$	11,359		$	4,679	$	44,549		$	65,612
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		—		(1		)	—		—			(1		)
Equity in earnings of unconsolidated subsidiaries	—		—		—			—		1,301			1,301
Net realized investment gains (losses)	—		—		—			—		—			—
Included in other comprehensive income	—		—		(221		)	16		—			(205		)
Purchases	—		—		—			—		2,354			2,354
Sales	—		—		(503		)	—		(3,548		)	(4,051		)
Transfers in	—		—		100			—		—			100
Transfers out	—		—		—			—		—			—
Balance September 30, 2013	$	—	$	5,025	$	10,734		$	4,695	$	44,656		$	65,110
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—	$	—		$	—	$	1,301		$	1,301

	September 30, 2013
	Level 3 Fair Value Measurements – Assets
(In thousands)	U.S. Government-sponsored Enterprise Obligations		State and Municipal Bonds			Corporate Debt			Asset-backed Securities			Investment in Unconsolidated Subsidiaries			Total
Balance December 31, 2012	$	—	$	7,175		$	15,191		$	4,035		$	33,739		$	60,140
Total gains (losses) realized and unrealized:
Included in earnings, as a part of:
Net investment income	—		—			(103		)	(17		)	—			(120		)
Equity in earnings of unconsolidated subsidiaries	—		—			—			—			3,582			3,582
Net realized investment gains (losses)	—		(44		)	(69		)	—			—			(113		)
Included in other comprehensive income	—		—			(514		)	(81		)	—			(595		)
Purchases	—		—			7,470			1,356			20,975			29,801
Sales	—		(2,106		)	(1,368		)	(18		)	(13,640		)	(17,132		)
Transfers in	—		—			100			1,701			—			1,801
Transfers out	—		—			(9,973		)	(2,281		)	—			(12,254		)
Balance September 30, 2013	$	—	$	5,025		$	10,734		$	4,695		$	44,656		$	65,110
Change in unrealized gains (losses) included in earnings for the above period for Level 3 assets held at period-end	$	—	$	—		$	—		$	—		$	3,582		$	3,582

Financial instruments not measured at fair value

The following table provides the estimated fair value of our financial instruments that, in accordance with GAAP for the type of investment, are measured using a methodology other than fair value. All fair values provided fall within the Level 3 fair value category.

	September 30, 2014				December 31, 2013
(In thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial assets:
BOLI	$	55,918	$	55,918	$	54,374	$	54,374
Other investments	61,952		63,247		52,240		51,833
Other assets	21,298		21,248		17,940		17,940
Financial liabilities:
Senior notes due 2023	$	250,000	$	273,750	$	250,000	$	262,500
Other liabilities	14,022		14,139		13,303		13,303

XML

Fair Value Measurement (Details 4) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financial assets:
BOLI	$ 55,918	$ 54,374
Other investments	92,010	52,240
Other assets	100,957	329,979
Financial liabilities:
Senior notes due 2023	250,000	250,000
Other Liabilities	164,095	143,079
Not Measured At Fair Value [Member] | Carrying Value [Member]
Financial assets:
BOLI	55,918	54,374
Other investments	61,952	52,240
Other assets	21,298	17,940
Financial liabilities:
Other Liabilities	14,022	13,303
Not Measured At Fair Value [Member] | Carrying Value [Member] | Senior notes due 2023 [Member]
Financial liabilities:
Senior notes due 2023	250,000	250,000
Not Measured At Fair Value [Member] | Level 3 [Member] | Fair Value [Member]
Financial assets:
BOLI	55,918	54,374
Other investments	63,247	51,833
Other assets	21,248	17,940
Financial liabilities:
Other Liabilities	14,139	13,303
Not Measured At Fair Value [Member] | Level 3 [Member] | Fair Value [Member] | Senior notes due 2023 [Member]
Financial liabilities:
Senior notes due 2023	$ 273,750	$ 262,500

XML

Long-term Debt (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

ProAssurance’s outstanding long-term debt consisted of the following:

(In thousands)	September 30, 2014		December 31, 2013
Senior notes due 2023, unsecured, interest at 5.3% annually	$	250,000	$	250,000
Revolving credit agreement, maximum outstanding borrowings of $200 million permitted, expires in 2016	—		—
	$	250,000	$	250,000

XML

Basis of Presentation

9 Months Ended

Sep. 30, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of ProAssurance Corporation and its consolidated subsidiaries (ProAssurance, PRA or the Company). The financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation, consisting of normal recurring adjustments, have been included. ProAssurance’s results for the three- and nine-month periods ended September 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014. The accompanying Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes contained in ProAssurance’s December 31, 2013 report on Form 10-K. In connection with its preparation of the Condensed Consolidated Financial Statements, ProAssurance evaluated events that occurred subsequent to September 30, 2014 for recognition or disclosure in its financial statements and notes to financial statements.

ProAssurance operates in four reportable segments as follows: Specialty Property and Casualty (Specialty P&C), Workers' Compensation, Lloyd's Syndicate, and Corporate. For more information on the nature of products and services provided and for financial information by segment, refer to Note 13 of the Notes to Condensed Consolidated Financial Statements.

Reclassifications

On January 1, 2014, ProAssurance began reporting unearned ceding commissions as an offset to deferred policy acquisition costs (DPAC) on the Condensed Consolidated Balance Sheet, and the December 31, 2013 Condensed Consolidated Balance Sheet has been conformed to the current presentation. Previously, unearned ceding commissions ($0.8 million at December 31, 2013) were reported in Unearned premiums. Also, ceding commission income earned for the three and nine months endedSeptember 30, 2014 and 2013 has been reported as an offset to DPAC amortization (see Note 6) which lowered DPAC amortization as previously reported for the three and nine months endedSeptember 30, 2013 by $1.5 million and $4.2 million, respectively. Total underwriting, policy acquisition and operating expense for the 2013 three- and nine-month periods was not affected by the change in presentation.

Intangible Assets

Intangible assets with definite lives are amortized over the estimated useful life of the asset. Amortizable intangible assets primarily consist of agency and policyholder relationships, renewal rights and trade names and had a carrying value of $77.5 million at September 30, 2014 and $35.2 million at December 31, 2013. Intangible assets with an indefinite life, primarily state licenses, are not amortized and had carrying values of $25.8 million at September 30, 2014 and $16.8 million at December 31, 2013. Both amortizable and non-amortizable intangible assets increased during 2014 due to intangible assets purchased in the Eastern acquisition, see Note 2. Intangible assets are evaluated for impairment on an annual basis.

Amortization expense for intangible assets for the three and nine months endedSeptember 30, 2014 was $2.6 million and $7.7 million, respectively, and was $1.3 million and $4.0 million for the three and nine months endedSeptember 30, 2013, respectively. Aggregate amortization expense for intangible assets over the next five years is estimated to be $2.6 million for the remainder of 2014, $8.3 million for 2015, $8.0 million for 2016, $5.7 million for 2017 and $5.3 million for 2018.

Other Assets and Other Liabilities

At December 31, 2013, Other assets was principally comprised of a deposit with an intermediate third-party of $205 million, related to the completion of the Eastern Insurance Holdings, Inc. (Eastern) acquisition which closed on January 1, 2014. See Note 2.

At September 30, 2014, Other liabilities included $16.5 million in segregated portfolio cell (SPC) dividends payable related to our recently acquired Workers' Compensation segment. The SPC dividend payable represents the cumulative undistributed earnings of segregated portfolio cells that are contractually payable to external preferred shareholders of the cells.

Accounting Policy Additions

The significant accounting policies adopted as a result of the acquisition of Eastern and commencement of our Lloyd's Syndicate operations effective January 1, 2014 and followed by ProAssurance in making estimates that materially affect financial reporting are as follows:

Earned But Unbilled Premiums (EBUB)

Workers’ compensation premiums are determined based upon the payroll of the insured, the applicable premium rates and, where applicable, an experience based modification factor. An audit of the policyholders’ records is conducted after policy expiration to make a final determination of applicable premiums. Audit premium due from or due to a policyholder as a result of an audit is reflected in net premiums earned when billed. ProAssurance tracks, by policy, the amount of additional premium billed in final audit invoices as a percentage of payroll exposure and uses this information to estimate the probable additional amount that it has earned, but not yet billed, as of the balance sheet date. Changes to the EBUB estimate are included in Net premiums earned in the period recognized. As of September 30, 2014, ProAssurance carried earned but unbilled premiums of $3.4 million as a part of Premiums receivable.

Convertible Bond Securities

Investments in convertible bond securities are carried at fair value as permitted by the accounting guidance for hybrid financial instruments, with changes in fair value recognized in income as a component of Net realized investment gains (losses) during the period of change. Interest on convertible bond securities is recorded on an accrual basis based on contractual interest rates and is included in Net investment income.

Foreign Currency

The functional currency of all ProAssurance foreign subsidiaries is the U.S. Dollar.

Accounting Changes Not Yet Adopted

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity

Effective for fiscal years beginning after December 15, 2014, the Financial Accounting Standards Board (FASB) issued guidance which changes the requirements for reporting discontinued operations. Under the new guidance, reporting entities are required to report disposals of business components only if the disposal represents a strategic shift in the entity’s operations that will have a major effect on the entity’s operations and financial results. The new guidance expands disclosure requirements for reported discontinued operations and requires disclosure of pre-tax profit or loss attributable to significant disposals that are not reported as discontinued operations. ProAssurance plans to adopt the guidance beginning January 1, 2015. Adoption of the guidance is expected to have no effect on ProAssurance’s results of operations or financial position.

Equity Method and Joint Ventures-Accounting for Investments in Qualified Affordable Housing Projects

Effective for fiscal years beginning after December 15, 2014, the FASB issued guidance which permits but does not require qualified reporting entities to use a new accounting method, the proportional amortization method, for investments in qualified affordable housing projects, also referred to as low income housing projects. Under the new method the initial cost of an investment is amortized in proportion to the tax benefits received, and investment performance is recognized as a component of income tax expense (benefit) rather than as a component of investment income. ProAssurance is in the process of evaluating whether it meets the qualification requirements for using the new method and the effect that the use of the new method would have on its results of operations and financial position. If ProAssurance elects to adopt the new method, the adoption will occur beginning January 1, 2015.

Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period

Effective for fiscal years beginning after December 15, 2015, the FASB issued guidance for share-based payments in which the terms of the award provide that a performance target can be achieved after completion of the requisite service period. The new guidance provides that compensation cost for such awards should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. ProAssurance plans to adopt the guidance beginning January 1, 2016. Adoption of the guidance is expected to have no effect on ProAssurance’s results of operations or financial position as ProAssurance has no awards with performance targets extending beyond the requisite service period.

Revenue from Contracts with Customers

Effective for fiscal years beginning after December 15, 2016, the FASB issued guidance related to revenue from contracts with customers. The core principle of the new guidance is that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ProAssurance plans to adopt the guidance beginning January 1, 2017. As the majority of ProAssurance's revenues come from insurance contracts which fall under the scope of other FASB standards, adoption of the guidance is expected to have no material effect on ProAssurance’s results of operations or financial position.

Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern

Effective for fiscal years ending after December 15, 2016 and interim periods beginning after December 15, 2016, the FASB issued guidance that establishes principles and definitions related to management's evaluation of whether there is substantial doubt about the organization's ability to continue as a going concern. For each interim and annual reporting period, the new guidance requires management to evaluate the organization's ability to meet its obligations as they are due within one year of the date the financial statements are issued and requires disclosure when there is substantial doubt regarding the organization's ability to continue as a going concern. ProAssurance plans to adopt the guidance beginning December 15, 2016. Adoption is expected to have no effect on ProAssurance’s results of operations or financial position.

Accounting Changes Adopted

Obligations Resulting from Joint and Several Liability Arrangements

Effective for fiscal years beginning after December 15, 2013, the FASB revised guidance related to obligations resulting from joint and several liability arrangements. The new guidance requires an entity to recognize, measure and disclose obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, except for obligations already addressed within existing GAAP guidance, with retrospective application required for such arrangements existing at the beginning of the fiscal year of adoption. ProAssurance adopted the guidance on January 1, 2014. Adoption of this guidance had no effect on ProAssurance's results of operations or financial position.

Presentation of Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists

Effective for fiscal years beginning after December 15, 2013, the FASB issued guidance related to the financial statement presentation of unrecognized tax benefits. The new guidance requires an entity to present unrecognized tax benefits as a reduction to a deferred tax asset resulting from a net operating loss carryforward, a similar tax loss, or tax credit carryforward except in circumstances where the relevant taxing authority does not permit offset or does not require offset and the entity does not intend to use the deferred tax asset for offset. The guidance requires prospective application for all unrecognized tax benefits that exist as of the effective date, but may be applied retrospectively. ProAssurance adopted the guidance prospectively on January 1, 2014. Adoption of this guidance had no material effect on ProAssurance's results of operations or financial position.

XML

Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, at fair value; amortized cost	$ 3,143,726	$ 3,026,256
Equity securities, trading, cost	274,324	203,308
Other investments, portion carried at fair value	30,058	0
Common shares, par value (USD per share)	$ 0.01	$ 0.01
Common shares, shares authorized	100,000,000	100,000,000
Common shares, shares issued	62,283,426	62,096,787
Deferred tax expense (benefit) on accumulated other comprehensive income (loss)	$ 35,591	$ 32,127
Treasury shares, number of shares	4,596,000	900,281

XML

Variable Interest Entities

9 Months Ended

Sep. 30, 2014

Variable Interest Entities [Abstract]

Variable Interest Entities

Variable Interest Entities

ProAssurance holds passive interests in a number of entities that are considered to be Variable Interest Entities (VIEs) under GAAP guidance. ProAssurance's VIE interests principally consist of interests in LPs/LLCs formed for the purpose of achieving diversified equity and debt returns. ProAssurance VIE interests carried as a part of Other investments totaled $37.6 million at September 30, 2014 and $27.3 million at December 31, 2013. ProAssurance VIE interests carried as a part of Investment in unconsolidated subsidiaries totaled $58.1 million at September 30, 2014 and $49.5 million at December 31, 2013.

ProAssurance has not consolidated these VIEs because it has either very limited or no power to control the activities that most significantly affect the economic performance of these entities and is not the primary beneficiary of any of the entities. ProAssurance’s involvement with each entity is limited to its direct ownership interest in the entity. ProAssurance has no arrangements with any of the entities to provide other financial support to or on behalf of the entity. At September 30, 2014, ProAssurance’s maximum loss exposure relative to these investments was limited to the carrying value of ProAssurance’s investment in the VIE.

XML

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	PROASSURANCE CORP
Entity Central Index Key	0001127703
Document Type	10-Q
Document Period End Date	Sep. 30, 2014
Amendment Flag	false
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		57,183,941
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

XML

Earnings Per Share

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Diluted weighted average shares is calculated as basic weighted average shares plus the effect, calculated using the treasury stock method, of assuming that dilutive stock options have been exercised and that performance, restricted and purchase share units have vested. All outstanding stock options, performance, restricted and purchase share units had a dilutive effect for the three and nine months endedSeptember 30, 2014 and 2013.

XML

Condensed Consolidated Statements of Changes in Capital (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity:
Beginning Balance			$ 2,394,414	$ 2,270,580
Common shares reacquired			(167,242)	(7,964)
Common shares issued for compensation			2,908	2,807
Share-based compensation	2,400	2,200	8,022	6,930
Net effect of restricted and performance shares issued and stock options exercised			(2,814)	(3,968)
Dividends to shareholders			(52,873)	(46,375)
Other comprehensive income (loss)			7,346	(75,307)
Net income	34,778	63,357	131,451	226,658
Ending Balance	2,321,212	2,373,361	2,321,212	2,373,361
Common Stock
Increase (Decrease) in Stockholders' Equity:
Beginning Balance			621	619
Common shares reacquired			0	0
Common shares issued for compensation			0	0
Share-based compensation			0	0
Net effect of restricted and performance shares issued and stock options exercised			2	2
Dividends to shareholders			0	0
Other comprehensive income (loss)			0	0
Net income			0	0
Ending Balance	623	621	623	621
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity:
Beginning Balance			349,894	341,780
Common shares reacquired			0	0
Common shares issued for compensation			2,679	2,807
Share-based compensation			8,022	6,930
Net effect of restricted and performance shares issued and stock options exercised			(2,816)	(3,970)
Dividends to shareholders			0	0
Other comprehensive income (loss)			0	0
Net income			0	0
Ending Balance	357,779	347,547	357,779	347,547
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity:
Beginning Balance			59,661	145,380
Common shares reacquired			0	0
Common shares issued for compensation			0	0
Share-based compensation			0	0
Net effect of restricted and performance shares issued and stock options exercised			0	0
Dividends to shareholders			0	0
Other comprehensive income (loss)			7,346	(75,307)
Net income			0	0
Ending Balance	67,007	70,073	67,007	70,073
Retained Earnings
Increase (Decrease) in Stockholders' Equity:
Beginning Balance			2,015,603	1,782,857
Common shares reacquired			0	0
Common shares issued for compensation			0	0
Share-based compensation			0	0
Net effect of restricted and performance shares issued and stock options exercised			0	0
Dividends to shareholders			(52,873)	(46,375)
Other comprehensive income (loss)			0	0
Net income			131,451	226,658
Ending Balance	2,094,181	1,963,140	2,094,181	1,963,140
Treasury Stock
Increase (Decrease) in Stockholders' Equity:
Beginning Balance			(31,365)	(56)
Common shares reacquired			(167,242)	(7,964)
Common shares issued for compensation			229	0
Share-based compensation			0	0
Net effect of restricted and performance shares issued and stock options exercised			0	0
Dividends to shareholders			0	0
Other comprehensive income (loss)			0	0
Net income			0	0
Ending Balance	$ (198,378)	$ (8,020)	$ (198,378)	$ (8,020)

XML

Deferred Policy Acquisition Costs

9 Months Ended

Sep. 30, 2014

Insurance [Abstract]

Deferred Policy Acquisition Costs

Deferred Policy Acquisition Costs

Policy acquisition costs that are primarily and directly related to the successful production of new and renewal insurance contracts, most significantly agent commissions, premium taxes, and underwriting salaries and benefits, are capitalized as policy acquisition costs and amortized to expense, net of ceding commissions earned, as the related premium revenues are earned.

Amortization of deferred policy acquisition costs was $16.7 million and $52.9 million for the three and nine months endedSeptember 30, 2014, respectively, and $13.9 million and $39.0 million for the three and nine months endedSeptember 30, 2013, respectively.

XML

Income Taxes

9 Months Ended

Sep. 30, 2014

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

ProAssurance estimates its annual effective tax rate at the end of each quarterly reporting period and uses this estimated rate to record the provision for income taxes in the interim financial statements. The provision for income taxes is different from that which would be obtained by applying the statutory Federal income tax rate to income before taxes primarily because a portion of ProAssurance’s investment income is tax-exempt, because ProAssurance utilizes tax credit benefits transferred from tax credit partnership investments, and in 2013, because ProAssurance recognized a non-taxable gain related to an acquisition.

In 2013 the IRS issued a Notice of Proposed Adjustment (NOPA) for the 2009 and 2010 tax years. ProAssurance subsequently protested certain issues in the NOPA, all of which related to the timing of deductions. In April 2014, ProAssurance and the IRS reached a final settlement on all contested issues which resulted in no additional tax liability for ProAssurance. ProAssurance subsequently received IRS refunds totaling $30.6 million, exclusive of interest, which included a refund from the settlement of non-contested issues addressed by the NOPA, and return of a protective payment made in 2013.

The statute of limitations is now closed for all tax years prior to 2011.

The liability for unrecognized tax benefits was $0.6 million at September 30, 2014 and $4.8 million at December 31, 2013. All unrecognized benefits included in the December 31, 2013 balance were attributable to timing issues which fully reversed during the first quarter of 2014; an additional $0.6 million was added to the liability in 2014 as a result of the acquisition of Eastern.

ProAssurance had receivables for federal income taxes of $11.4 million at September 30, 2014 and $27.3 million at December 31, 2013, both carried as a part of Other Assets.

XML

Investments (Tables)

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Amortized cost and estimated fair value of available-for-sale fixed maturities and equity securities

Available-for-sale securities at September 30, 2014 and December 31, 2013 included the following:

	September 30, 2014
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Fixed maturities
U.S. Treasury obligations	$	173,632	$	4,396	$	1,215	$	176,813
U.S. Government-sponsored enterprise obligations	42,480		1,709		223		43,966
State and municipal bonds	1,038,278		50,055		699		1,087,634
Corporate debt	1,433,266		48,894		9,175		1,472,985
Residential mortgage-backed securities	282,717		8,817		1,220		290,314
Agency commercial mortgage-backed securities	16,785		172		64		16,893
Other commercial mortgage-backed securities	55,853		1,587		117		57,323
Other asset-backed securities	100,715		346		169		100,892
	$	3,143,726	$	115,976	$	12,882	$	3,246,820
	December 31, 2013
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Fixed maturities
U.S. Treasury obligations	$	166,115	$	6,118	$	1,519	$	170,714
U.S. Government-sponsored enterprise obligations	30,942		2,251		425		32,768
State and municipal bonds	1,116,060		46,533		7,927		1,154,666
Corporate debt	1,321,838		53,059		13,744		1,361,153
Residential mortgage-backed securities	230,861		7,608		2,855		235,614
Agency commercial mortgage-backed securities	27,268		343		136		27,475
Other commercial mortgage-backed securities	59,066		2,491		167		61,390
Other asset-backed securities	74,106		487		324		74,269
	$	3,026,256	$	118,890	$	27,097	$	3,118,049

Schedule of available for sale securities by contractual maturity

The recorded cost basis and estimated fair value of available-for-sale fixed maturities at September 30, 2014, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(In thousands)	Amortized Cost		Due in one year or less		Due after one year through five years		Due after five years through ten years		Due after ten years		Total Fair Value
Fixed maturities, available for sale
U.S. Treasury obligations	$	173,632	$	19,612	$	104,211	$	48,950	$	4,040	$	176,813
U.S. Government-sponsored enterprise obligations	42,480		8,002		25,465		10,160		339		43,966
State and municipal bonds	1,038,278		49,169		393,569		442,212		202,684		1,087,634
Corporate debt	1,433,266		157,683		694,254		598,183		22,865		1,472,985
Residential mortgage-backed securities	282,717										290,314
Agency commercial mortgage-backed securities	16,785										16,893
Other commercial mortgage-backed securities	55,853										57,323
Other asset-backed securities	100,715										100,892
	$	3,143,726									$	3,246,820

Other Investments

Other investments at September 30, 2014 and December 31, 2013 was comprised as follows:

(In thousands)	September 30, 2014		December 31, 2013
Investments in LPs/LLCs, at cost	$	57,607	$	47,258
Convertible securities, at fair value, see Note 1	30,058		—
Other, principally FHLB capital stock, at cost	4,345		4,982
	$	92,010	$	52,240

Unconsolidated Subsidiaries

ProAssurance holds investments in unconsolidated subsidiaries, accounted for under the equity method. The investments include the following:

	September 30, 2014			Carrying Value
(In thousands)	Unfunded Commitments*	Percentage Ownership		September 30, 2014		December 31, 2013
Investment in LPs/LLCs:
Tax credit partnerships	$15,710	See below		$	137,386	$	142,174
Secured debt fund	$16,200	<	20%	23,896		13,233
Long equity fund	None	<	20%	7,034		6,574
Long/short equity funds	None	<	25%	25,016		28,385
Non-public equity funds	$88,034	<	20%	46,127		23,870
Multi-strategy fund of funds	None	<	20%	8,263		—
Structured credit fund	None	<	20%	3,766		—
Real estate fund	$6,526	<	20%	3,474		—
				$	254,962	$	214,236

* Unfunded commitments are included in the carrying value of tax credit partnerships only.

Investments held in an unrealized loss position

The following tables provide summarized information with respect to investments held in an unrealized loss position at September 30, 2014 and December 31, 2013, including the length of time the investment had been held in a continuous unrealized loss position.

	September 30, 2014
	Total				Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(In thousands)	Value		Loss		Value		Loss		Value		Loss
Fixed maturities, available for sale
U.S. Treasury obligations	$	59,770	$	1,215	$	37,309	$	534	$	22,461	$	681
U.S. Government-sponsored enterprise obligations	7,887		223		2,136		22		5,751		201
State and municipal bonds	71,155		699		32,129		128		39,026		571
Corporate debt	477,806		9,175		372,670		5,909		105,136		3,266
Residential mortgage-backed securities	66,143		1,220		26,012		105		40,131		1,115
Agency commercial mortgage-backed securities	10,432		64		8,536		8		1,896		56
Other commercial mortgage-backed securities	14,592		117		7,528		33		7,064		84
Other asset-backed securities	39,328		169		35,269		77		4,059		92
	$	747,113	$	12,882	$	521,589	$	6,816	$	225,524	$	6,066
Other investments
Investments in LPs/LLCs carried at cost	$	17,106	$	582	$	15,458	$	577	$	1,648	$	5

	December 31, 2013
	Total				Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(In thousands)	Value		Loss		Value		Loss		Value		Loss
Fixed maturities, available for sale
U.S. Treasury obligations	$	47,668	$	1,519	$	44,304	$	1,182	$	3,364	$	337
U.S. Government-sponsored enterprise obligations	6,640		425		5,752		321		888		104
State and municipal bonds	203,970		7,927		184,401		6,640		19,569		1,287
Corporate debt	349,277		13,744		324,510		12,061		24,767		1,683
Residential mortgage-backed securities	93,608		2,855		84,045		2,393		9,563		462
Agency commercial mortgage-backed securities	11,658		136		11,082		116		576		20
Other commercial mortgage-backed securities	11,153		167		10,215		159		938		8
Other asset-backed securities	25,539		324		21,804		77		3,735		247
	$	749,513	$	27,097	$	686,113	$	22,949	$	63,400	$	4,148
Other investments
Investments in LPs/LLCs carried at cost	$	14,752	$	1,059	$	13,166	$	1,018	$	1,586	$	41

Net Investment Income

Net investment income by investment category was as follows:

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Fixed maturities	$	28,442		$	30,672		$	85,402		$	93,687
Equities	2,661			2,394			7,479			7,000
Short-term investments and Other invested assets	2,793			2,000			4,723			2,514
Business owned life insurance	646			633			1,544			1,508
Investment fees and expenses	(1,712		)	(1,810		)	(6,360		)	(5,427		)
Net investment income	$	32,830		$	33,889		$	92,788		$	99,282

Net realized investment gains (losses)

The following table provides detailed information regarding net realized investment gains (losses):

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Total other-than-temporary impairment losses:
State and municipal bonds	$	—		$	—		$	(50	)	$	(71	)
Corporate debt	(1,425		)	—			(1,425		)	—
Portion recognized in (reclassified from) Other Comprehensive Income:
Corporate debt	268			—			268			—
Net impairments recognized in earnings	$	(1,157	)	$	—		$	(1,207	)	$	(71	)
Gross realized gains, available-for-sale securities	736			7,708			3,711			14,631
Gross realized (losses), available-for-sale securities	(52		)	(5,305		)	(371		)	(6,269		)
Net realized gains (losses), trading securities	3,227			5,818			21,830			14,650
Net realized gains (losses), Other investments	55			—			321			—
Change in unrealized holding gains (losses), trading securities	(10,402		)	3,355			(17,906		)	23,784
Change in unrealized holding gains (losses), convertible securities, carried at fair value	(538		)	—			1,281			—
Other	—			924			—			925
Net realized investment gains (losses)	$	(8,131	)	$	12,500		$	7,659		$	47,650

Other than Temporary Impairment, Credit Losses Recognized in Earnings

The following table presents a roll forward of cumulative credit losses recorded in earnings related to impaired debt securities for which a portion of the other-than-temporary impairment was recorded in Other comprehensive income.

	Three Months Ended September 30					Nine Months Ended September 30
(In thousands)	2014		2013			2014		2013
Balance beginning of period	$	83	$	413		$	83	$	3,301
Additional credit losses recognized during the period, related to securities for which:
No OTTI has been previously recognized	149		—			149		—
Reductions due to:
Securities sold during the period (realized)	—		(330		)	—		(3,218		)
Balance September 30	$	232	$	83		$	232	$	83

Information regarding sales and purchases of available-for-sale securities

Other information regarding sales and purchases of available-for-sale securities is as follows:

	Three Months Ended September 30				Nine Months Ended September 30
(In millions)	2014		2013		2014		2013
Proceeds from sales (exclusive of maturities and paydowns)	$	24.8	$	319.2	$	147.3	$	494.8
Purchases	$	146.5	$	98.8	$	511.9	$	406.2

XML

Segment Information

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Segment Information

Segment Information

ProAssurance operates in four segments that are organized around the nature of the products and services provided: Specialty P&C, Workers' Compensation, Lloyd's Syndicate, and Corporate. A description of each segment follows.

Specialty P&C is primarily focused on professional liability insurance and medical technology and life sciences products liability insurance. The professional liability business primarily offers professional liability insurance to healthcare providers and institutions and to attorneys and their firms. The medical technology and life sciences business offers products liability insurance for medical technology and life sciences companies that manufacture or distribute products. The Specialty P&C segment cedes certain premium to the Lloyd's Syndicate segment under an agreement with Syndicate 1729. As discussed below, Syndicate 1729 operating results are reported on a quarter delay. The ceded premium associated with the Syndicate 1729 reinsurance agreement has been reported within the Specialty P&C segment on a similar lag, as this results in the ceded premium being reported in the same period in which the Lloyd's Syndicate segment reports the corresponding assumed premium.

Workers' Compensation provides workers' compensation products primarily to employers with 1,000 or fewer employees. The segment also offers alternative market solutions whereby policies written are 100% ceded either to a captive insurer unaffiliated with ProAssurance or to SPCs operated by a wholly owned subsidiary of ProAssurance. The SPCs are fully or partially owned by the employer (or employer group, association or affiliate) insured by the policies ceded. Financial results (underwriting profit or loss, plus investment income) of the SPCs accrue to the owners of that cell. Our workers' compensation segment is comprised entirely of the business acquired through Eastern on January 1, 2014.

Lloyd'sSyndicate includes operating results from ProAssurance's 58% participation in Lloyd's of London Syndicate 1729 that began writing business as of January 1, 2014. Syndicate 1729 underwrites risks over a wide range of property and casualty insurance and reinsurance lines. The results of this segment are reported on a quarter delay, except that investment results associated with the FAL investments and certain U.S. paid administrative expenses, primarily start-up costs, are reported concurrently as that information is available on an earlier time frame.

Corporate includes ProAssurance's U.S. investment operations, interest expense and U.S. income taxes, all of which are managed at the corporate level, non-premium revenues generated outside of our insurance entities, and corporate expenses.

The accounting policies of the segments are the same as those described in Note 1 of the Notes to Consolidated Financial Statements in ProAssurance’s December 31, 2013 report on Form 10-K and Note 1 herein. ProAssurance evaluates performance of its Specialty P&C and Workers' Compensation segments based on before tax underwriting profit or loss, and excludes investment performance. Performance of the Lloyd's Syndicate segment is evaluated based on underwriting profit or loss, and investment results of investment assets solely allocated to Syndicate 1729 operations, net of United Kingdom income tax expense. Performance of the Corporate segment is evaluated based on the contribution made to consolidated after tax results. ProAssurance accounts for inter-segment sales and transfers as if the sales or transfers were to third parties at current market prices. Assets are not allocated to segments because investments and assets are not managed at the segment level.

Financial data by segment for the three and nine months endedSeptember 30, 2014 and 2013 were as follows:

	Three Months Ended September 30, 2014
(In thousands)	Specialty P&C			Workers' Compensation			Lloyd's Syndicate			Corporate			Eliminations			Consolidated
Net premiums earned	$	123,791		$	49,792		$	3,445		$	—		$	—		$	177,028
Net investment income	—			—			120			32,710			—			32,830
Equity in earnings (loss) of unconsolidated subsidiaries	—			—			—			298			—			298
Net realized gains (losses)	—			—			—			(8,131		)	—			(8,131		)
Other income	1,071			179			(79		)	824			(187		)	1,808
Net losses and loss adjustment expenses	(63,639		)	(33,046		)	(2,537		)	—			—			(99,222		)
Underwriting, policy acquisition and operating expenses	(33,814		)	(14,785		)	(2,584		)	(3,189		)	187			(54,185		)
Segregated portfolio cells dividend expense	—			483			—			—			—			483
Interest expense	—			—			—			(3,606		)	—			(3,606		)
Income tax expense (benefit)	—			—			—			(12,525		)	—			(12,525		)
Segment operating results	$	27,409		$	2,623		$	(1,635	)	$	6,381		$	—		$	34,778
Significant non-cash items
Depreciation and amortization	$	2,334		$	1,602		$	157		$	8,219		$	—		$	12,312

	Nine Months Ended September 30, 2014
(In thousands)	Specialty P&C			Workers' Compensation			Lloyd's Syndicate			Corporate			Eliminations			Consolidated
Net premiums earned	$	374,704		$	143,960		$	6,397		$	—		$	—		$	525,061
Net investment income	—			—			244			92,544			—			92,788
Equity in earnings (loss) of unconsolidated subsidiaries	—			—			—			2,767			—			2,767
Net realized gains (losses)	—			—			—			7,659			—			7,659
Other income	4,167			503			(79		)	1,856			(392		)	6,055
Net losses and loss adjustment expenses	(191,263		)	(91,975		)	(4,405		)	—			—			(287,643		)
Underwriting, policy acquisition and operating expenses	(101,044		)	(45,379		)	(5,999		)	(6,826		)	392			(158,856		)
Segregated portfolio cells dividend expense	—			(2,355		)	—			—			—			(2,355		)
Interest expense	—			—			—			(10,697		)	—			(10,697		)
Income tax expense (benefit)	—			—			—			(43,328		)	—			(43,328		)
Segment operating results	$	86,564		$	4,754		$	(3,842	)	$	43,975		$	—		$	131,451
Significant non-cash items
Depreciation and amortization	$	6,708		$	4,384		$	329		$	24,865		$	—		$	36,286

	Three Months Ended September 30, 2013
(In thousands)	Specialty P&C			Workers' Compensation		Lloyd's Syndicate		Corporate			Eliminations		Consolidated
Net premiums earned	$	133,598		$	—	$	—	$	—		$	—	$	133,598
Net investment income	—			—		—		33,889			—		33,889
Equity in earnings (loss) of unconsolidated subsidiaries	—			—		—		(305		)	—		(305		)
Net realized gains (losses)	—			—		—		12,500			—		12,500
Other income	1,225			—		—		579			—		1,804
Gain on acquisition	—			—		—		494			—		494
Net losses and loss adjustment expenses	(61,637		)	—		—		—			—		(61,637		)
Underwriting, policy acquisition and operating expenses	(30,708		)	—		—		(2,640		)	—		(33,348		)
Interest expense	—			—		—		(322		)	—		(322		)
Income tax expense (benefit)	—			—		—		(23,316		)	—		(23,316		)
Segment operating results	$	42,478		$	—	$	—	$	20,879		$	—	$	63,357
Significant non-cash items
Depreciation and amortization	$	990		$	—	$	—	$	8,930		$	—	$	9,920

	Nine Months Ended September 30, 2013
(In thousands)	Specialty P&C			Workers' Compensation		Lloyd's Syndicate		Corporate			Eliminations			Consolidated
Net premiums earned	$	398,528		$	—	$	—	$	—		$	—		$	398,528
Net investment income	—			—		—		99,282			—			99,282
Equity in earnings (loss) of unconsolidated subsidiaries	—			—		—		(3,500		)	—			(3,500		)
Net realized gains (losses)	—			—		—		47,650			—			47,650
Other income	3,902			—		—		1,410			(7		)	5,305
Gain on acquisition	—			—		—		35,986			—			35,986
Net losses and loss adjustment expenses	(189,872		)	—		—		—			—			(189,872		)
Underwriting, policy acquisition and operating expenses	(95,907		)	—		—		(9,692		)	7			(105,592		)
Interest expense	—			—		—		(1,085		)	—			(1,085		)
Income tax expense (benefit)	—			—		—		(60,044		)	—			(60,044		)
Segment operating results	$	116,651		$	—	$	—	$	110,007		$	—		$	226,658
Significant non-cash items
Depreciation and amortization	$	4,845		$	—	$	—	$	29,519		$	—		$	34,364

The following table provides detailed information regarding ProAssurance's gross premiums earned by product as well as a reconciliation to net premiums earned. All gross premiums earned are from external customers except as noted. ProAssurance's insured risks are primarily within the United States.

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Specialty P&C Segment
Gross premiums earned:
Healthcare professional liability	$	120,623		$	128,532		$	361,179		$	382,678
Legal professional liability	7,145			6,849			21,147			20,328
Medical technology and life sciences products liability	9,258			8,436			27,043			24,442
Other	420			463			1,445			1,336
Ceded premiums earned*	(13,655		)	(10,682		)	(36,110		)	(30,256		)
Segment net premiums earned	$	123,791		$	133,598		$	374,704		$	398,528
Workers' Compensation Segment
Gross premiums earned:
Traditional business	$	42,345		$	—		$	119,702		$	—
Alternative market business	14,345			—			40,253			—
Ceded premiums earned	(6,898		)	—			(15,995		)	—
Segment net premiums earned	$	49,792		$	—		$	143,960		$	—
Lloyd's Syndicate Segment
Gross premiums earned:
Property and casualty*	$	4,085		$	—		$	7,110		$	—
Ceded premiums earned	(640		)	—			(713		)	—
Segment net premiums earned	$	3,445		$	—		$	6,397		$	—
Consolidated net premiums earned	$	177,028		$	133,598		$	525,061		$	398,528

* Includes premium ceded from the Specialty P&C Segment to the Lloyd's Syndicate Segment of $1.1 million for the three months and $1.6 million for nine months ended September 30, 2014, respectively.

XML

Long-term Debt

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Long-term Debt

Long-term Debt

ProAssurance’s outstanding long-term debt consisted of the following:

(In thousands)	September 30, 2014		December 31, 2013
Senior notes due 2023, unsecured, interest at 5.3% annually	$	250,000	$	250,000
Revolving credit agreement, maximum outstanding borrowings of $200 million permitted, expires in 2016	—		—
	$	250,000	$	250,000

Covenant Compliance

There are no financial covenants associated with the Senior Notes due 2023.

The Revolving credit agreement (the Agreement) contains customary representations, covenants and events constituting default, and remedies for default. The Agreement also defines financial covenants regarding permitted leverage ratios and minimum net worth. ProAssurance is currently in compliance with all covenants of the Agreement.

Additional Information

For additional information regarding ProAssurance's long-term debt, see Note 10 of the Notes to Consolidated Financial Statements included in ProAssurance's December 31, 2013 Form 10-K.

XML

Reserve for Losses and Loss Adjustment Expenses

9 Months Ended

Sep. 30, 2014

Insurance [Abstract]

Reserve for Losses and Loss Adjustment Expenses

Reserve for Losses and Loss Adjustment Expenses

The reserve for losses is established based on estimates of individual claims and actuarially determined estimates of future losses based on ProAssurance’s past loss experience, available industry data and projections as to future claims frequency, severity, inflationary trends and settlement patterns. Estimating the reserve, particularly the reserve appropriate for liability exposures, is a complex process. Claims may be resolved over an extended period of time, often five years or more, and may be subject to litigation. Estimating losses requires ProAssurance to make and revise judgments and assessments regarding multiple uncertainties over an extended period of time. As a result, the reserve estimate may vary significantly from the eventual outcome. The assumptions used in establishing ProAssurance’s reserve are regularly reviewed and updated by management as new data becomes available. Changes to estimates of previously established reserves are included in earnings in the period in which the estimate is changed.

During the three and nine months endedSeptember 30, 2014, ProAssurance recognized favorable net loss development of $42.9 million and $133.3 million, respectively, related to prior accident years, of which $0.6 million and $2.9 million, respectively, related to the loss reserve assumed in the acquisition of Eastern. The favorable net loss development reflected reductions in the Company's estimates of claims severity, principally related to the 2007 through 2012 accident years.

For the three and nine months endedSeptember 30, 2013, ProAssurance recognized favorable net loss development of $49.4 million and $141.0 million, respectively, to reflect reductions in estimated claims severity. The favorable net loss development reflected reductions in the Company's estimates of claims severity, principally related to the 2005 through 2011 accident years.

XML

Commitments and Contingencies

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

ProAssurance is involved in various legal actions related to insurance policies and claims handling including, but not limited to, claims asserted by policyholders. These types of legal actions arise in the Company's ordinary course of business and, in accordance with GAAP for insurance entities, are considered as a part of the Company's loss reserving process, which is described in detail under the heading "Losses and Loss Adjustment Expenses" in the Accounting Policies section in Note 1 of the Notes to Consolidated Financial Statements in ProAssurance's 2013 Form 10-K.

ProAssurance has funding commitments primarily related to non-public investment entities totaling approximately $164.7 million, expected to be paid as follows: $22.6 million in 2014, $124.7 million in 2015 and 2016 combined, $16.5 million in 2017 and 2018 combined, and $0.9 million thereafter.

As a member of Lloyd's and a capital provider to Syndicate 1729, ProAssurance is required to provide capital, referred to as FAL. At September 30, 2014, ProAssurance is satisfying the FAL requirement with investment securities on deposit with Lloyd's with a carrying value of $77.2 million (see Note 4). ProAssurance anticipates its FAL requirement for the 2015 underwriting year to be approximately £50.9 million, which would require ProAssurance to fund an additional £5.8 million (approximately $9.8 million if funded with U.S. currency) during 2014. At December 31, 2013, the FAL requirement was primarily met through a standby letter of credit (LOC).

ProAssurance has also issued an unconditional revolving credit agreement (the Credit Agreement) of up to £10 million ($16 million at September 30, 2014) to the Premium Trust Fund of Syndicate 1729 for the purpose of providing working capital. Advances under the Credit Agreement bear interest at 8.5% annually, and are repayable upon demand after December 31, 2016. As of September 30, 2014, £5.5 million ($9.2 million) had been advanced under the Credit Agreement.

XML

Shareholders' Equity

9 Months Ended

Sep. 30, 2014

Equity [Abstract]

Shareholders' Equity

Shareholders’ Equity

At September 30, 2014 and December 31, 2013, ProAssurance had 100 million shares of authorized common stock and 50 million shares of authorized preferred stock. The Board has the authority to determine provisions for the issuance of preferred shares, including the number of shares to be issued, the designations, powers, preferences and rights, and the qualifications, limitations or restrictions of such shares. To date, the Board has not approved the issuance of preferred stock.

ProAssurance declared cash dividends of $0.30 per share during each of the first three quarters of 2014, totaling $52.9 million, which included the third quarter dividend of $17.3 million that was paid in October 2014. ProAssurance declared cash dividends of $0.25 per share during each of the first three quarters of 2013, totaling $46.4 million, which included the third quarter dividend of $15.5 million that was paid in October 2013. The liability for unpaid dividends was included in Other liabilities. Though dividends are typically paid in the month following the quarter in which they were declared, no dividends were paid in the first quarter of 2013 because payment of the regular fourth quarter 2012 dividend was accelerated into December 2012.

At September 30, 2014, Board authorizations for the repurchase of common shares or the retirement of outstanding debt of $136.7 million remained available for use. ProAssurance repurchased approximately 3.7 million and 0.2 million shares, having a total cost of $167.2 million and $8.0 million, during the nine months endedSeptember 30, 2014 and 2013, respectively.

Share-based compensation expense was $2.4 million and $8.0 million for the three and nine months endedSeptember 30, 2014, respectively, and $2.2 million and $6.9 million for the three and nine months endedSeptember 30, 2013, respectively. Related tax benefits were $0.8 million and $2.8 million for the three and nine months endedSeptember 30, 2014, respectively, and $0.8 million and $2.4 million for the three and nine months endedSeptember 30, 2013, respectively.

ProAssurance awarded approximately 50,000 restricted share units and 161,000 base performance share units to employees in February 2014. The fair value of each unit awarded was estimated at $46.34, equal to the market value of a ProAssurance common share on the date of grant. All awards are charged to expense as an increase to equity over the service period (generally the vesting period) associated with the award. Restricted share units and performance share units vest in their entirety at the end of a three-year period following the grant date based on a continuous service requirement and, for performance share units, achievement of a performance objective. Partial vesting is permitted for retirees. A ProAssurance common share is issued for each unit once vesting requirements are met, except that units sufficient to satisfy required tax withholdings are paid in cash. The number of common shares issued for performance share units varies from 75% to 125% of base awards depending upon the degree to which stated performance objectives are achieved. ProAssurance issued approximately 29,000 and 111,000 common shares to employees in February 2014 related to restricted share units and performance share units, respectively, granted in 2011. Shares issued for performance share units were awarded at the maximum level (125%).

ProAssurance issued approximately 30,000 common shares to employees in February 2014 as bonus compensation, as approved by the Compensation Committee of the Board. The shares issued were valued at fair value (the market price of a ProAssurance common share on the date of award).

Other Comprehensive Income (Loss) (OCI)

For the three and nine months endedSeptember 30, 2014 and September 30, 2013, OCI was primarily comprised of unrealized gains and losses arising during the period related to available-for-sale securities, less reclassification adjustments as shown in the table below, net of tax. At September 30, 2014 and December 31, 2013, accumulated other comprehensive income was comprised primarily of unrealized gains and losses from available-for-sale securities, including non-credit impairment losses previously recognized in OCI of $0.8 million and 0.5 million, respectively, net of tax. All tax effects were computed using a 35% rate. OCI and accumulated other comprehensive income also included immaterial amounts of foreign currency translation adjustments.

Amounts reclassified from accumulated other comprehensive income to net income and the amounts of deferred tax expense (benefit) included in OCI were as follows:

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Reclassifications from accumulated other comprehensive income to net income, available-for-sale securities:
Realized investment gains (losses)	$	(473	)	$	2,403		$	2,133		$	8,638
Non-credit impairment losses reclassified to earnings, due to sale of securities or reclassification as a credit loss	—			—			—			(347		)
Total amounts reclassified, before tax effect	(473		)	2,403			2,133			8,291
Tax effect (at 35%)	166			(841		)	(747		)	(2,902		)
Net reclassification adjustments	$	(307	)	$	1,562		$	1,386		$	5,389
Deferred tax expense (benefit) included in OCI	$	(5,126	)	$	(1,746	)	$	(2,571	)	$	(26,358	)

XML

Fair Value Measurement (Details 2) (Level 3 [Member], USD $) In Thousands, unless otherwise specified			9 Months Ended								9 Months Ended								9 Months Ended
	Sep. 30, 2014 State and municipal bonds [Member]	Dec. 31, 2013 State and municipal bonds [Member]	Sep. 30, 2014 State and municipal bonds [Member] Market comparable securities valuation technique [Member] Minimum [Member]	Sep. 30, 2014 State and municipal bonds [Member] Market comparable securities valuation technique [Member] Maximum [Member]	Sep. 30, 2014 State and municipal bonds [Member] Market comparable securities valuation technique [Member] Weighted Average [Member]	Sep. 30, 2014 State and municipal bonds [Member] Discount cash flows valuation technique [Member] Minimum [Member]	Sep. 30, 2014 State and municipal bonds [Member] Discount cash flows valuation technique [Member] Maximum [Member]	Sep. 30, 2014 State and municipal bonds [Member] Discount cash flows valuation technique [Member] Weighted Average [Member]	Sep. 30, 2014 Corporate debt with limited observable inputs [Member]	Dec. 31, 2013 Corporate debt with limited observable inputs [Member]	Sep. 30, 2014 Corporate debt with limited observable inputs [Member] Market comparable securities valuation technique [Member] Minimum [Member]	Sep. 30, 2014 Corporate debt with limited observable inputs [Member] Market comparable securities valuation technique [Member] Maximum [Member]	Sep. 30, 2014 Corporate debt with limited observable inputs [Member] Market comparable securities valuation technique [Member] Weighted Average [Member]	Sep. 30, 2014 Corporate debt with limited observable inputs [Member] Discount cash flows valuation technique [Member] Minimum [Member]	Sep. 30, 2014 Corporate debt with limited observable inputs [Member] Discount cash flows valuation technique [Member] Maximum [Member]	Sep. 30, 2014 Corporate debt with limited observable inputs [Member] Discount cash flows valuation technique [Member] Weighted Average [Member]	Sep. 30, 2014 Other asset-backed securities [Member]	Dec. 31, 2013 Other asset-backed securities [Member]	Sep. 30, 2014 Other asset-backed securities [Member] Market comparable securities valuation technique [Member] Minimum [Member]	Sep. 30, 2014 Other asset-backed securities [Member] Market comparable securities valuation technique [Member] Maximum [Member]	Sep. 30, 2014 Other asset-backed securities [Member] Market comparable securities valuation technique [Member] Weighted Average [Member]	Sep. 30, 2014 Other asset-backed securities [Member] Discount cash flows valuation technique [Member] Minimum [Member]	Sep. 30, 2014 Other asset-backed securities [Member] Discount cash flows valuation technique [Member] Maximum [Member]	Sep. 30, 2014 Other asset-backed securities [Member] Discount cash flows valuation technique [Member] Weighted Average [Member]
Assets:
Assets, Fair Value	$ 5,600	$ 7,300							$ 13,400	$ 14,200							$ 4,800	$ 6,800
Comparability Adjustment			0.00%	10.00%	5.00%	0.00%	10.00%	5.00%			0.00%	5.00%	2.50%	0.00%	5.00%	2.50%			0.00%	5.00%	2.50%	0.00%	5.00%	2.50%

XML

Reserve for Losses and Loss Adjustment Expenses (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Summary of reserve for losses and loss adjustment expenses
Minimum period for claims resolution			5 years
Net losses:
Favorable development of reserves established in prior years, net	$ 42.9	$ 49.4	$ 133.3	$ 141.0
Liability for unpaid claims and claims adjustment expense incurred claims prior years accident years	2007 through 2012	2005 through 2011	2007 through 2012	2005 through 2011
Eastern Insurance Holdings [Member]
Net losses:
Favorable development of reserves established in prior years, net	$ 0.6		$ 2.9

XML

Business Combinations (Tables)

9 Months Ended

Sep. 30, 2014

Business Combinations [Abstract]

Purchase price allocation

The purchase consideration for Eastern was allocated to the assets acquired and liabilities assumed based on their estimated fair values on the acquisition date. Goodwill of $49.6 million was recognized equal to the excess of the purchase price over the net fair value of identifiable assets acquired and liabilities assumed. Factors contributing to the recognition of goodwill include strategic and synergistic benefits that are expected to be realized as a result of the acquisition. These benefits include insurance market diversification, expanded access to alternative markets, and opportunities to reach additional insureds in the healthcare market by being a single source provider of a suite of insurance products. None of the goodwill is expected to be tax deductible. The allocation of purchase consideration is shown in the table below.

(In thousands)
Fixed maturities, available for sale	$	107,131
Equity securities, trading	65,945
Cash and short-term investments	58,944
Other investments	42,133
Premiums receivable	71,989
Receivable from reinsurers on paid and unpaid losses and LAE	18,942
Intangible assets	59,000
Deferred policy acquisition costs (see discussion below)	10,593
Other assets	19,225
Reserve for losses and loss adjustment expenses	(153,191		)
Unearned premiums	(80,268		)
Ceded balances payable	(9,507		)
Segregated portfolio cells dividends payable	(14,430		)
Deferred tax liabilities, net	(12,835		)
Other liabilities	(28,038		)
Fair value of net assets acquired	$	155,633
Goodwill	49,610
Total purchase consideration	$	205,243

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

Intangible assets acquired included the following:

(In millions)	Estimated Fair Value on Acquisition Date	Estimated Useful Life
Agency relationships	$27.0	15
Policyholder relationships	8.0	15
Trade names	8.0	15
Non-compete agreements	7.0	3
Total intangibles subject to amortization	$50.0	13	*
Insurance license agreements	$9.0	Indefinite

* Reflects the weighted average estimated useful life of acquired intangible assets that are subject to amortization.

ProAssurance Consolidated results

The following table provides Pro Forma Consolidated Results for the three and nine months endedSeptember 30, 2014 and 2013 as if the Eastern transaction had occurred on January 1, 2013. ProAssurance Actual Consolidated Results have been adjusted by the following, net of related tax effects, to reflect the Pro Forma Consolidated Results below.

• For the three and nine months endedSeptember 30, 2013, ProAssurance 2013 Actual Consolidated Results, which did not include Eastern, have been adjusted to include Eastern's 2013 operating results. ProAssurance Actual Consolidated Results for the three and nine months endedSeptember 30, 2014 included Eastern's operating results (Revenue of $49.6 million and $149.9 million, respectively, and Net income of $1.7 million and $7.1 million, respectively).

• Certain costs included in ProAssurance actual results for the three and nine months endedSeptember 30, 2014 have been reported in the Pro Forma Consolidated Results as if the costs had been incurred for the three and nine months endedSeptember 30, 2013. Such costs include direct transaction costs and certain compensation costs directly related to the integration of Eastern operations.

• Actual Consolidated Results for the three and nine months endedSeptember 30, 2013, were reduced to reflect amortization of intangible assets and debt security premiums and discounts recorded as a part of the Eastern purchase price allocation.

	Three Months Ended September 30, 2014		Nine Months Ended September 30, 2014
(In thousands)	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results
Revenue	$203,833	$203,833	$634,330	$634,330
Net income	$34,759	$34,778	$132,451	$131,451
	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
(In thousands)	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results	ProAssurance Pro Forma Consolidated Results	ProAssurance Actual Consolidated Results
Revenue	$229,608	$181,486	$686,391	$547,265
Net income	$66,868	$63,357	$233,666	$226,658

XML

Segment Information (Tables)

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Financial data by segment for the three and nine months endedSeptember 30, 2014 and 2013 were as follows:

	Three Months Ended September 30, 2014
(In thousands)	Specialty P&C			Workers' Compensation			Lloyd's Syndicate			Corporate			Eliminations			Consolidated
Net premiums earned	$	123,791		$	49,792		$	3,445		$	—		$	—		$	177,028
Net investment income	—			—			120			32,710			—			32,830
Equity in earnings (loss) of unconsolidated subsidiaries	—			—			—			298			—			298
Net realized gains (losses)	—			—			—			(8,131		)	—			(8,131		)
Other income	1,071			179			(79		)	824			(187		)	1,808
Net losses and loss adjustment expenses	(63,639		)	(33,046		)	(2,537		)	—			—			(99,222		)
Underwriting, policy acquisition and operating expenses	(33,814		)	(14,785		)	(2,584		)	(3,189		)	187			(54,185		)
Segregated portfolio cells dividend expense	—			483			—			—			—			483
Interest expense	—			—			—			(3,606		)	—			(3,606		)
Income tax expense (benefit)	—			—			—			(12,525		)	—			(12,525		)
Segment operating results	$	27,409		$	2,623		$	(1,635	)	$	6,381		$	—		$	34,778
Significant non-cash items
Depreciation and amortization	$	2,334		$	1,602		$	157		$	8,219		$	—		$	12,312

	Nine Months Ended September 30, 2014
(In thousands)	Specialty P&C			Workers' Compensation			Lloyd's Syndicate			Corporate			Eliminations			Consolidated
Net premiums earned	$	374,704		$	143,960		$	6,397		$	—		$	—		$	525,061
Net investment income	—			—			244			92,544			—			92,788
Equity in earnings (loss) of unconsolidated subsidiaries	—			—			—			2,767			—			2,767
Net realized gains (losses)	—			—			—			7,659			—			7,659
Other income	4,167			503			(79		)	1,856			(392		)	6,055
Net losses and loss adjustment expenses	(191,263		)	(91,975		)	(4,405		)	—			—			(287,643		)
Underwriting, policy acquisition and operating expenses	(101,044		)	(45,379		)	(5,999		)	(6,826		)	392			(158,856		)
Segregated portfolio cells dividend expense	—			(2,355		)	—			—			—			(2,355		)
Interest expense	—			—			—			(10,697		)	—			(10,697		)
Income tax expense (benefit)	—			—			—			(43,328		)	—			(43,328		)
Segment operating results	$	86,564		$	4,754		$	(3,842	)	$	43,975		$	—		$	131,451
Significant non-cash items
Depreciation and amortization	$	6,708		$	4,384		$	329		$	24,865		$	—		$	36,286

	Three Months Ended September 30, 2013
(In thousands)	Specialty P&C			Workers' Compensation		Lloyd's Syndicate		Corporate			Eliminations		Consolidated
Net premiums earned	$	133,598		$	—	$	—	$	—		$	—	$	133,598
Net investment income	—			—		—		33,889			—		33,889
Equity in earnings (loss) of unconsolidated subsidiaries	—			—		—		(305		)	—		(305		)
Net realized gains (losses)	—			—		—		12,500			—		12,500
Other income	1,225			—		—		579			—		1,804
Gain on acquisition	—			—		—		494			—		494
Net losses and loss adjustment expenses	(61,637		)	—		—		—			—		(61,637		)
Underwriting, policy acquisition and operating expenses	(30,708		)	—		—		(2,640		)	—		(33,348		)
Interest expense	—			—		—		(322		)	—		(322		)
Income tax expense (benefit)	—			—		—		(23,316		)	—		(23,316		)
Segment operating results	$	42,478		$	—	$	—	$	20,879		$	—	$	63,357
Significant non-cash items
Depreciation and amortization	$	990		$	—	$	—	$	8,930		$	—	$	9,920

	Nine Months Ended September 30, 2013
(In thousands)	Specialty P&C			Workers' Compensation		Lloyd's Syndicate		Corporate			Eliminations			Consolidated
Net premiums earned	$	398,528		$	—	$	—	$	—		$	—		$	398,528
Net investment income	—			—		—		99,282			—			99,282
Equity in earnings (loss) of unconsolidated subsidiaries	—			—		—		(3,500		)	—			(3,500		)
Net realized gains (losses)	—			—		—		47,650			—			47,650
Other income	3,902			—		—		1,410			(7		)	5,305
Gain on acquisition	—			—		—		35,986			—			35,986
Net losses and loss adjustment expenses	(189,872		)	—		—		—			—			(189,872		)
Underwriting, policy acquisition and operating expenses	(95,907		)	—		—		(9,692		)	7			(105,592		)
Interest expense	—			—		—		(1,085		)	—			(1,085		)
Income tax expense (benefit)	—			—		—		(60,044		)	—			(60,044		)
Segment operating results	$	116,651		$	—	$	—	$	110,007		$	—		$	226,658
Significant non-cash items
Depreciation and amortization	$	4,845		$	—	$	—	$	29,519		$	—		$	34,364

Schedule of Gross Premiums by Product

The following table provides detailed information regarding ProAssurance's gross premiums earned by product as well as a reconciliation to net premiums earned. All gross premiums earned are from external customers except as noted. ProAssurance's insured risks are primarily within the United States.

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Specialty P&C Segment
Gross premiums earned:
Healthcare professional liability	$	120,623		$	128,532		$	361,179		$	382,678
Legal professional liability	7,145			6,849			21,147			20,328
Medical technology and life sciences products liability	9,258			8,436			27,043			24,442
Other	420			463			1,445			1,336
Ceded premiums earned*	(13,655		)	(10,682		)	(36,110		)	(30,256		)
Segment net premiums earned	$	123,791		$	133,598		$	374,704		$	398,528
Workers' Compensation Segment
Gross premiums earned:
Traditional business	$	42,345		$	—		$	119,702		$	—
Alternative market business	14,345			—			40,253			—
Ceded premiums earned	(6,898		)	—			(15,995		)	—
Segment net premiums earned	$	49,792		$	—		$	143,960		$	—
Lloyd's Syndicate Segment
Gross premiums earned:
Property and casualty*	$	4,085		$	—		$	7,110		$	—
Ceded premiums earned	(640		)	—			(713		)	—
Segment net premiums earned	$	3,445		$	—		$	6,397		$	—
Consolidated net premiums earned	$	177,028		$	133,598		$	525,061		$	398,528

* Includes premium ceded from the Specialty P&C Segment to the Lloyd's Syndicate Segment of $1.1 million for the three months and $1.6 million for nine months ended September 30, 2014, respectively.

XML

Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Jan. 01, 2014 Eastern Insurance Holdings [Member]
Income Tax Contingency [Line Items]
Refund adjustment from settlement with taxing authority	$ 30.6
Unrecognized tax benefits	0.6	4.8	0.6
Income taxes receivable	$ 11.4	$ 27.3

XML

Investments (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other Investments
Other investments	$ 92,010	$ 52,240
Investments in LPs/LLCs, at cost [Member]
Other Investments
Other investments	57,607	47,258
Convertible securities, at fair value [Member]
Other Investments
Other investments	30,058	0
Other, principally FHLB capital stock at cost [Member]
Other Investments
Other investments	$ 4,345	$ 4,982

XML

Condensed Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues
Net premiums earned	$ 177,028	$ 133,598	$ 525,061	$ 398,528
Net investment income	32,830	33,889	92,788	99,282
Equity in earnings (loss) of unconsolidated subsidiaries	298	(305)	2,767	(3,500)
Net realized investment gains (losses):
Other-than-temporary impairment (OTTI) losses	(1,425)	0	(1,475)	(71)
Portion of OTTI losses recognized in (reclassified from) other comprehensive income before taxes	268	0	268	0
Net impairment losses recognized in earnings	(1,157)	0	(1,207)	(71)
Other net realized investment gains (losses)	(6,974)	12,500	8,866	47,721
Total net realized investment gains (losses)	(8,131)	12,500	7,659	47,650
Other income	1,808	1,804	6,055	5,305
Total revenues	203,833	181,486	634,330	547,265
Expenses
Losses and loss adjustment expenses	106,486	65,619	306,591	203,885
Reinsurance recoveries	(7,264)	(3,982)	(18,948)	(14,013)
Net losses and loss adjustment expenses	99,222	61,637	287,643	189,872
Underwriting, policy acquisition and operating expenses	54,185	33,348	158,856	105,592
Segregated portfolio cells dividend expense	(483)	0	2,355	0
Interest expense	3,606	322	10,697	1,085
Total expenses	156,530	95,307	459,551	296,549
Gain on acquisition	0	494	0	35,986
Income before income taxes	47,303	86,673	174,779	286,702
Provision for income taxes
Current expense (benefit)	15,591	12,687	37,884	36,902
Deferred expense (benefit)	(3,066)	10,629	5,444	23,142
Total income tax expense (benefit)	12,525	23,316	43,328	60,044
Net income	34,778	63,357	131,451	226,658
Other comprehensive income (loss), after tax, net of reclassification adjustments	(14,646)	(4,989)	7,346	(75,307)
Comprehensive income	$ 20,132	$ 58,368	$ 138,797	$ 151,351
Earnings per share:
Basic (USD per share)	$ 0.59	$ 1.02	$ 2.20	$ 3.67
Diluted (USD per share)	$ 0.59	$ 1.02	$ 2.19	$ 3.65
Weighted average number of common shares outstanding:
Basic (in shares)	58,676	61,844	59,807	61,793
Diluted (in shares)	58,931	62,108	60,047	62,040
Cash dividends declared per common share (USD per share)	$ 0.3	$ 0.25	$ 0.90	$ 0.75

XML

Investments

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

Available-for-sale securities at September 30, 2014 and December 31, 2013 included the following:

	September 30, 2014
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Fixed maturities
U.S. Treasury obligations	$	173,632	$	4,396	$	1,215	$	176,813
U.S. Government-sponsored enterprise obligations	42,480		1,709		223		43,966
State and municipal bonds	1,038,278		50,055		699		1,087,634
Corporate debt	1,433,266		48,894		9,175		1,472,985
Residential mortgage-backed securities	282,717		8,817		1,220		290,314
Agency commercial mortgage-backed securities	16,785		172		64		16,893
Other commercial mortgage-backed securities	55,853		1,587		117		57,323
Other asset-backed securities	100,715		346		169		100,892
	$	3,143,726	$	115,976	$	12,882	$	3,246,820
	December 31, 2013
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Fixed maturities
U.S. Treasury obligations	$	166,115	$	6,118	$	1,519	$	170,714
U.S. Government-sponsored enterprise obligations	30,942		2,251		425		32,768
State and municipal bonds	1,116,060		46,533		7,927		1,154,666
Corporate debt	1,321,838		53,059		13,744		1,361,153
Residential mortgage-backed securities	230,861		7,608		2,855		235,614
Agency commercial mortgage-backed securities	27,268		343		136		27,475
Other commercial mortgage-backed securities	59,066		2,491		167		61,390
Other asset-backed securities	74,106		487		324		74,269
	$	3,026,256	$	118,890	$	27,097	$	3,118,049

The recorded cost basis and estimated fair value of available-for-sale fixed maturities at September 30, 2014, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(In thousands)	Amortized Cost		Due in one year or less		Due after one year through five years		Due after five years through ten years		Due after ten years		Total Fair Value
Fixed maturities, available for sale
U.S. Treasury obligations	$	173,632	$	19,612	$	104,211	$	48,950	$	4,040	$	176,813
U.S. Government-sponsored enterprise obligations	42,480		8,002		25,465		10,160		339		43,966
State and municipal bonds	1,038,278		49,169		393,569		442,212		202,684		1,087,634
Corporate debt	1,433,266		157,683		694,254		598,183		22,865		1,472,985
Residential mortgage-backed securities	282,717										290,314
Agency commercial mortgage-backed securities	16,785										16,893
Other commercial mortgage-backed securities	55,853										57,323
Other asset-backed securities	100,715										100,892
	$	3,143,726									$	3,246,820

Excluding obligations of the U.S. Government or U.S. Government-sponsored enterprises, no investment in any entity or its affiliates exceeded 10% of shareholders’ equity at September 30, 2014.

Cash and securities with a carrying value of $48.2 million at September 30, 2014 were on deposit with various state insurance departments to meet regulatory requirements.

As a member of Lloyd's and a capital provider to Syndicate 1729, ProAssurance is required to maintain capital at Lloyd's, referred to as Funds at Lloyd's (FAL). ProAssurance investments at September 30, 2014 included fixed maturities with a fair value of $71.5 million and short term investments with a fair value of approximately $5.7 million on deposit with Lloyd's in order to satisfy these FAL requirements.

Business Owned Life Insurance (BOLI)

ProAssurance holds BOLI policies on management employees that are carried at the current cash surrender value of the policies (original cost $33 million). The primary purpose of the program is to offset future employee benefit expenses through earnings on the cash value of the policies. ProAssurance is the owner and principal beneficiary of these policies.

Other Investments

Other investments at September 30, 2014 and December 31, 2013 was comprised as follows:

(In thousands)	September 30, 2014		December 31, 2013
Investments in LPs/LLCs, at cost	$	57,607	$	47,258
Convertible securities, at fair value, see Note 1	30,058		—
Other, principally FHLB capital stock, at cost	4,345		4,982
	$	92,010	$	52,240

FHLB capital stock is not marketable, but may be liquidated by terminating membership in the FHLB. The liquidation process can take up to five years.

Unconsolidated Subsidiaries

ProAssurance holds investments in unconsolidated subsidiaries, accounted for under the equity method. The investments include the following:

	September 30, 2014			Carrying Value
(In thousands)	Unfunded Commitments*	Percentage Ownership		September 30, 2014		December 31, 2013
Investment in LPs/LLCs:
Tax credit partnerships	$15,710	See below		$	137,386	$	142,174
Secured debt fund	$16,200	<	20%	23,896		13,233
Long equity fund	None	<	20%	7,034		6,574
Long/short equity funds	None	<	25%	25,016		28,385
Non-public equity funds	$88,034	<	20%	46,127		23,870
Multi-strategy fund of funds	None	<	20%	8,263		—
Structured credit fund	None	<	20%	3,766		—
Real estate fund	$6,526	<	20%	3,474		—
				$	254,962	$	214,236

* Unfunded commitments are included in the carrying value of tax credit partnerships only.

Tax credit partnership interests held by ProAssurance generate investment returns by providing tax benefits to fund investors in the form of project operating losses and tax credits. The related properties are principally low income housing projects. ProAssurance's ownership percentage relative to two of the tax credit partnership interests is almost 100%; these interests had a carrying value of $60.9 million at September 30, 2014. ProAssurance's ownership percentage relative to the remaining tax credit partnership interests is less than 20%; these interests had a carrying value of $76.5 million at September 30, 2014. All are accounted for under the equity method as ProAssurance does not have the ability to exert control over the partnerships.

The Secured debt fund is structured to provide interest distributions and capital appreciation primarily through investments in senior secured debt.

The Long equity fund targets long-term total returns through holdings in public international companies.

The Long/Short equity fund targets absolute returns using a strategy designed to take advantage of event-driven market opportunities.

The Non-public equity funds hold diversified private equities and are structured to provide capital appreciation.

The Multi-strategy fund of funds holds portfolios having little or no correlation to the broader fixed income and equity security markets.

The Structured credit fund seeks to obtain superior risk-adjusted absolute returns by acquiring and actively managing a diversified portfolio of debt securities.

The Real estate fund invests in multi-tenant industrial real estate with the objective of achieving superior absolute returns in all market cycles.

Investments Held in a Loss Position

The following tables provide summarized information with respect to investments held in an unrealized loss position at September 30, 2014 and December 31, 2013, including the length of time the investment had been held in a continuous unrealized loss position.

	September 30, 2014
	Total				Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(In thousands)	Value		Loss		Value		Loss		Value		Loss
Fixed maturities, available for sale
U.S. Treasury obligations	$	59,770	$	1,215	$	37,309	$	534	$	22,461	$	681
U.S. Government-sponsored enterprise obligations	7,887		223		2,136		22		5,751		201
State and municipal bonds	71,155		699		32,129		128		39,026		571
Corporate debt	477,806		9,175		372,670		5,909		105,136		3,266
Residential mortgage-backed securities	66,143		1,220		26,012		105		40,131		1,115
Agency commercial mortgage-backed securities	10,432		64		8,536		8		1,896		56
Other commercial mortgage-backed securities	14,592		117		7,528		33		7,064		84
Other asset-backed securities	39,328		169		35,269		77		4,059		92
	$	747,113	$	12,882	$	521,589	$	6,816	$	225,524	$	6,066
Other investments
Investments in LPs/LLCs carried at cost	$	17,106	$	582	$	15,458	$	577	$	1,648	$	5

	December 31, 2013
	Total				Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(In thousands)	Value		Loss		Value		Loss		Value		Loss
Fixed maturities, available for sale
U.S. Treasury obligations	$	47,668	$	1,519	$	44,304	$	1,182	$	3,364	$	337
U.S. Government-sponsored enterprise obligations	6,640		425		5,752		321		888		104
State and municipal bonds	203,970		7,927		184,401		6,640		19,569		1,287
Corporate debt	349,277		13,744		324,510		12,061		24,767		1,683
Residential mortgage-backed securities	93,608		2,855		84,045		2,393		9,563		462
Agency commercial mortgage-backed securities	11,658		136		11,082		116		576		20
Other commercial mortgage-backed securities	11,153		167		10,215		159		938		8
Other asset-backed securities	25,539		324		21,804		77		3,735		247
	$	749,513	$	27,097	$	686,113	$	22,949	$	63,400	$	4,148
Other investments
Investments in LPs/LLCs carried at cost	$	14,752	$	1,059	$	13,166	$	1,018	$	1,586	$	41

As of September 30, 2014, excluding U.S. government backed securities, there were 617 debt securities (21.1% of all available-for-sale fixed maturity securities held) in an unrealized loss position representing 441 issuers. The greatest and second greatest unrealized loss position among those securities was approximately $0.5 million and $0.3 million, respectively. The securities were evaluated for impairment as of September 30, 2014.

As of December 31, 2013, excluding U.S. government backed securities, there were 714 debt securities (26.3% of all available-for-sale fixed maturity securities held) in an unrealized loss position representing 516 issuers. Both the greatest and second greatest unrealized loss position among those securities approximated $0.4 million. The securities were evaluated for impairment as of December 31, 2013.

Each quarter, ProAssurance performs a detailed analysis for the purpose of assessing whether any of the securities it holds in an unrealized loss position have suffered an other-than-temporary impairment in value. A detailed discussion of the factors considered in the assessment is included in Note 1 of the Notes to Consolidated Financial Statements included in ProAssurance's December 31, 2013 Form 10-K.

Fixed maturity securities held in an unrealized loss position at September 30, 2014, excluding asset-backed securities, have paid all scheduled contractual payments and are expected to continue doing so. Expected future cash flows of asset-backed securities held in an unrealized loss position were estimated as part of the September 30, 2014 impairment evaluation using the most recently available six-month historical performance data for the collateral (loans) underlying the security or, if historical data was not available, sector based assumptions, and equaled or exceeded the current amortized cost basis of the security.

Net Investment Income

Net investment income by investment category was as follows:

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Fixed maturities	$	28,442		$	30,672		$	85,402		$	93,687
Equities	2,661			2,394			7,479			7,000
Short-term investments and Other invested assets	2,793			2,000			4,723			2,514
Business owned life insurance	646			633			1,544			1,508
Investment fees and expenses	(1,712		)	(1,810		)	(6,360		)	(5,427		)
Net investment income	$	32,830		$	33,889		$	92,788		$	99,282

Net Realized Investment Gains (Losses)

Realized investment gains and losses are recognized on the specific identification basis. The following table provides detailed information regarding net realized investment gains (losses):

	Three Months Ended September 30						Nine Months Ended September 30
(In thousands)	2014			2013			2014			2013
Total other-than-temporary impairment losses:
State and municipal bonds	$	—		$	—		$	(50	)	$	(71	)
Corporate debt	(1,425		)	—			(1,425		)	—
Portion recognized in (reclassified from) Other Comprehensive Income:
Corporate debt	268			—			268			—
Net impairments recognized in earnings	$	(1,157	)	$	—		$	(1,207	)	$	(71	)
Gross realized gains, available-for-sale securities	736			7,708			3,711			14,631
Gross realized (losses), available-for-sale securities	(52		)	(5,305		)	(371		)	(6,269		)
Net realized gains (losses), trading securities	3,227			5,818			21,830			14,650
Net realized gains (losses), Other investments	55			—			321			—
Change in unrealized holding gains (losses), trading securities	(10,402		)	3,355			(17,906		)	23,784
Change in unrealized holding gains (losses), convertible securities, carried at fair value	(538		)	—			1,281			—
Other	—			924			—			925
Net realized investment gains (losses)	$	(8,131	)	$	12,500		$	7,659		$	47,650

Credit-related impairments related to two corporate debt instruments were recognized in the third quarter of 2014. Additionally, a non-credit impairment related to one of the instruments was recognized as the fair value of the instrument was less than the expected future cash flows from the security. No significant impairment losses were recognized in the 2013three- and nine-month periods.

The following table presents a roll forward of cumulative credit losses recorded in earnings related to impaired debt securities for which a portion of the other-than-temporary impairment was recorded in Other comprehensive income.

	Three Months Ended September 30					Nine Months Ended September 30
(In thousands)	2014		2013			2014		2013
Balance beginning of period	$	83	$	413		$	83	$	3,301
Additional credit losses recognized during the period, related to securities for which:
No OTTI has been previously recognized	149		—			149		—
Reductions due to:
Securities sold during the period (realized)	—		(330		)	—		(3,218		)
Balance September 30	$	232	$	83		$	232	$	83

Other information regarding sales and purchases of available-for-sale securities is as follows:

	Three Months Ended September 30				Nine Months Ended September 30
(In millions)	2014		2013		2014		2013
Proceeds from sales (exclusive of maturities and paydowns)	$	24.8	$	319.2	$	147.3	$	494.8
Purchases	$	146.5	$	98.8	$	511.9	$	406.2

XML

Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Net premiums earned	$ 177,028	$ 133,598	$ 525,061	$ 398,528
Net investment income	32,830	33,889	92,788	99,282
Equity in earnings (loss) of unconsolidated subsidiaries	298	(305)	2,767	(3,500)
Net realized gains (losses)	(8,131)	12,500	7,659	47,650
Other income	1,808	1,804	6,055	5,305
Gain on acquisition	0	494	0	35,986
Net losses and loss adjustment expenses	(99,222)	(61,637)	(287,643)	(189,872)
Underwriting, policy acquisition and operating expenses	(54,185)	(33,348)	(158,856)	(105,592)
Segregated portfolio cells dividend expense	483	0	(2,355)	0
Interest expense	(3,606)	(322)	(10,697)	(1,085)
Income tax expense (benefit)	(12,525)	(23,316)	(43,328)	(60,044)
Segment operating results	34,778	63,357	131,451	226,658
Depreciation and amortization	12,312	9,920	36,286	34,364
Specialty P&C [Member]
Segment Reporting Information [Line Items]
Net premiums earned	123,791	133,598	374,704	398,528
Other income	1,071	1,225	4,167	3,902
Net losses and loss adjustment expenses	(63,639)	(61,637)	(191,263)	(189,872)
Underwriting, policy acquisition and operating expenses	(33,814)	(30,708)	(101,044)	(95,907)
Segment operating results	27,409	42,478	86,564	116,651
Depreciation and amortization	2,334	990	6,708	4,845
Workers Compensation [Member]
Segment Reporting Information [Line Items]
Net premiums earned	49,792	0	143,960	0
Other income	179	0	503	0
Net losses and loss adjustment expenses	(33,046)	0	(91,975)	0
Underwriting, policy acquisition and operating expenses	(14,785)	0	(45,379)	0
Segregated portfolio cells dividend expense	483		(2,355)
Segment operating results	2,623	0	4,754	0
Depreciation and amortization	1,602	0	4,384	0
Lloyds Syndicate [Member]
Segment Reporting Information [Line Items]
Net premiums earned	3,445	0	6,397	0
Net investment income	120	0	244	0
Other income	(79)		(79)
Net losses and loss adjustment expenses	(2,537)		(4,405)
Underwriting, policy acquisition and operating expenses	(2,584)	0	(5,999)	0
Segment operating results	(1,635)	0	(3,842)	0
Depreciation and amortization	157	0	329	0
Corporate [Member]
Segment Reporting Information [Line Items]
Net investment income	32,710	33,889	92,544	99,282
Equity in earnings (loss) of unconsolidated subsidiaries	298	(305)	2,767	(3,500)
Net realized gains (losses)	(8,131)	12,500	7,659	47,650
Other income	824	579	1,856	1,410
Gain on acquisition		494		35,986
Underwriting, policy acquisition and operating expenses	(3,189)	(2,640)	(6,826)	(9,692)
Interest expense	(3,606)	(322)	(10,697)	(1,085)
Income tax expense (benefit)	(12,525)	(23,316)	(43,328)	(60,044)
Segment operating results	6,381	20,879	43,975	110,007
Depreciation and amortization	8,219	8,930	24,865	29,519
Eliminations [Member]
Segment Reporting Information [Line Items]
Other income	(187)	0	(392)	(7)
Underwriting, policy acquisition and operating expenses	187	0	392	7
Segment operating results	$ 0	$ 0	$ 0	$ 0

XML

Basis of Presentation (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Segment	Sep. 30, 2013	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments			4
Finite-lived intangible assets, net	$ 77.5		$ 77.5		$ 35.2
Indefinite-lived intangible assets, excluding goodwill	25.8		25.8		16.8
Amortization expense	2.6	1.3	7.7	4.0
Amortization expense in 2014	2.6		2.6
Amortization expense in 2015	8.3		8.3
Amortization expense in 2016	8.0		8.0
Amortization expense in 2017	5.7		5.7
Amortization expense in 2018	5.3		5.3
Deposit with an intermediate third-party					205
Segregated portfolio cell dividends payable	16.5		16.5
Earned but unbilled premiums	3.4		3.4
Reclassifications [Member]
Reclassifications [Line Items]
Unearned ceding commission					0.8
Ceding commission income		$ 1.5		$ 4.2

XML

Fair Value Measurement (Details Textuals 1) (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Fair value level 1 to level 2 transfers	$ 0	$ 0
Fair value level 2 to level 1 transfers	$ 0	$ 0

XML

Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Reclassifications

Reclassifications

On January 1, 2014, ProAssurance began reporting unearned ceding commissions as an offset to deferred policy acquisition costs (DPAC) on the Condensed Consolidated Balance Sheet, and the December 31, 2013 Condensed Consolidated Balance Sheet has been conformed to the current presentation. Previously, unearned ceding commissions ($0.8 million at December 31, 2013) were reported in Unearned premiums. Also, ceding commission income earned for the three and nine months endedSeptember 30, 2014 and 2013 has been reported as an offset to DPAC amortization (see Note 6) which lowered DPAC amortization as previously reported for the three and nine months endedSeptember 30, 2013 by $1.5 million and $4.2 million, respectively. Total underwriting, policy acquisition and operating expense for the 2013 three- and nine-month periods was not affected by the change in presentation.

Intangible Assets

Intangible Assets

Intangible assets with definite lives are amortized over the estimated useful life of the asset. Amortizable intangible assets primarily consist of agency and policyholder relationships, renewal rights and trade names and had a carrying value of $77.5 million at September 30, 2014 and $35.2 million at December 31, 2013. Intangible assets with an indefinite life, primarily state licenses, are not amortized and had carrying values of $25.8 million at September 30, 2014 and $16.8 million at December 31, 2013. Both amortizable and non-amortizable intangible assets increased during 2014 due to intangible assets purchased in the Eastern acquisition, see Note 2. Intangible assets are evaluated for impairment on an annual basis.

Other Assets and Other Liabilities

Other Assets and Other Liabilities

At December 31, 2013, Other assets was principally comprised of a deposit with an intermediate third-party of $205 million, related to the completion of the Eastern Insurance Holdings, Inc. (Eastern) acquisition which closed on January 1, 2014. See Note 2.

At September 30, 2014, Other liabilities included $16.5 million in segregated portfolio cell (SPC) dividends payable related to our recently acquired Workers' Compensation segment. The SPC dividend payable represents the cumulative undistributed earnings of segregated portfolio cells that are contractually payable to external preferred shareholders of the cells.

Earned But Unbilled Premiums (EBUB)

Earned But Unbilled Premiums (EBUB)

Workers’ compensation premiums are determined based upon the payroll of the insured, the applicable premium rates and, where applicable, an experience based modification factor. An audit of the policyholders’ records is conducted after policy expiration to make a final determination of applicable premiums. Audit premium due from or due to a policyholder as a result of an audit is reflected in net premiums earned when billed. ProAssurance tracks, by policy, the amount of additional premium billed in final audit invoices as a percentage of payroll exposure and uses this information to estimate the probable additional amount that it has earned, but not yet billed, as of the balance sheet date. Changes to the EBUB estimate are included in Net premiums earned in the period recognized.

Convertible Bond Securities

Convertible Bond Securities

Investments in convertible bond securities are carried at fair value as permitted by the accounting guidance for hybrid financial instruments, with changes in fair value recognized in income as a component of Net realized investment gains (losses) during the period of change. Interest on convertible bond securities is recorded on an accrual basis based on contractual interest rates and is included in Net investment income.

Foreign Currency

Foreign Currency

The functional currency of all ProAssurance foreign subsidiaries is the U.S. Dollar.

Accounting Changes Not Yet Adopted and Adopted

Accounting Changes Not Yet Adopted

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity

Effective for fiscal years beginning after December 15, 2014, the Financial Accounting Standards Board (FASB) issued guidance which changes the requirements for reporting discontinued operations. Under the new guidance, reporting entities are required to report disposals of business components only if the disposal represents a strategic shift in the entity’s operations that will have a major effect on the entity’s operations and financial results. The new guidance expands disclosure requirements for reported discontinued operations and requires disclosure of pre-tax profit or loss attributable to significant disposals that are not reported as discontinued operations. ProAssurance plans to adopt the guidance beginning January 1, 2015. Adoption of the guidance is expected to have no effect on ProAssurance’s results of operations or financial position.

Equity Method and Joint Ventures-Accounting for Investments in Qualified Affordable Housing Projects

Effective for fiscal years beginning after December 15, 2014, the FASB issued guidance which permits but does not require qualified reporting entities to use a new accounting method, the proportional amortization method, for investments in qualified affordable housing projects, also referred to as low income housing projects. Under the new method the initial cost of an investment is amortized in proportion to the tax benefits received, and investment performance is recognized as a component of income tax expense (benefit) rather than as a component of investment income. ProAssurance is in the process of evaluating whether it meets the qualification requirements for using the new method and the effect that the use of the new method would have on its results of operations and financial position. If ProAssurance elects to adopt the new method, the adoption will occur beginning January 1, 2015.

Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period

Effective for fiscal years beginning after December 15, 2015, the FASB issued guidance for share-based payments in which the terms of the award provide that a performance target can be achieved after completion of the requisite service period. The new guidance provides that compensation cost for such awards should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. ProAssurance plans to adopt the guidance beginning January 1, 2016. Adoption of the guidance is expected to have no effect on ProAssurance’s results of operations or financial position as ProAssurance has no awards with performance targets extending beyond the requisite service period.

Revenue from Contracts with Customers

Effective for fiscal years beginning after December 15, 2016, the FASB issued guidance related to revenue from contracts with customers. The core principle of the new guidance is that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ProAssurance plans to adopt the guidance beginning January 1, 2017. As the majority of ProAssurance's revenues come from insurance contracts which fall under the scope of other FASB standards, adoption of the guidance is expected to have no material effect on ProAssurance’s results of operations or financial position.

Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern

Effective for fiscal years ending after December 15, 2016 and interim periods beginning after December 15, 2016, the FASB issued guidance that establishes principles and definitions related to management's evaluation of whether there is substantial doubt about the organization's ability to continue as a going concern. For each interim and annual reporting period, the new guidance requires management to evaluate the organization's ability to meet its obligations as they are due within one year of the date the financial statements are issued and requires disclosure when there is substantial doubt regarding the organization's ability to continue as a going concern. ProAssurance plans to adopt the guidance beginning December 15, 2016. Adoption is expected to have no effect on ProAssurance’s results of operations or financial position.

Accounting Changes Adopted

Obligations Resulting from Joint and Several Liability Arrangements

Effective for fiscal years beginning after December 15, 2013, the FASB revised guidance related to obligations resulting from joint and several liability arrangements. The new guidance requires an entity to recognize, measure and disclose obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, except for obligations already addressed within existing GAAP guidance, with retrospective application required for such arrangements existing at the beginning of the fiscal year of adoption. ProAssurance adopted the guidance on January 1, 2014. Adoption of this guidance had no effect on ProAssurance's results of operations or financial position.

Presentation of Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists

Effective for fiscal years beginning after December 15, 2013, the FASB issued guidance related to the financial statement presentation of unrecognized tax benefits. The new guidance requires an entity to present unrecognized tax benefits as a reduction to a deferred tax asset resulting from a net operating loss carryforward, a similar tax loss, or tax credit carryforward except in circumstances where the relevant taxing authority does not permit offset or does not require offset and the entity does not intend to use the deferred tax asset for offset. The guidance requires prospective application for all unrecognized tax benefits that exist as of the effective date, but may be applied retrospectively. ProAssurance adopted the guidance prospectively on January 1, 2014. Adoption of this guidance had no material effect on ProAssurance's results of operations or financial position.