10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For the quarterly period ended June 30, 2012

or

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

For the transition period from            to            

Commission file number 0-15886

The Navigators Group, Inc.

(Exact name of registrant as specified in its charter)

Delaware	13-3138397
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)
6 International Drive, Rye Brook, New York	10573
(Address of principal executive offices)	(Zip Code)

(914) 934-8999

(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  x    No  ¨

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

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

Large accelerated filer	¨	Accelerated filer	x
Non-accelerated filer	¨	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  x

The number of common shares outstanding as of July 24, 2012 was 14,012,320.

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

INDEX

	Page Number
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
Consolidated Balance Sheets June 30, 2012 (Unaudited) and December 31, 2011		3
Consolidated Statements of Income (Unaudited) Three and Six Months Ended June 30, 2012 and 2011		4
Consolidated Statements of Comprehensive Income (Unaudited) Three and Six Months Ended June 30, 2012 and 2011		5
Consolidated Statements of Stockholders’ Equity (Unaudited) Six Months Ended June 30, 2012		6
Consolidated Statements of Cash Flows (Unaudited) Six Months Ended June 30, 2012 and 2011		7
Notes to Interim Consolidated Financial Statements (Unaudited)		8
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		29
Item 3. Quantitative and Qualitative Disclosures About Market Risk		60
Item 4. Controls and Procedures		60
PART II. OTHER INFORMATION
Item 1. Legal Proceedings		61
Item 1A. Risk Factors		62
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		62
Item 3. Defaults Upon Senior Securities		62
Item 4. Mine Safety Disclosures		62
Item 5. Other Information		62
Item 6. Exhibits		63
Signatures		64
Index to Exhibits		65

2

Item 1. Financial Statements

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In thousands, except share amounts)

	June 30, 2012			December 31, 2011
	(Unaudited)
ASSETS
Investments and cash:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2012, $1,935,631; 2011, $1,816,710)	$	2,024,429		$	1,888,069
Equity securities, available-for-sale, at fair value (cost: 2012, $74,457; 2011, $73,567)		103,649			95,849
Short-term investments, at cost which approximates fair value		161,983			122,220
Cash		45,842			127,360
Total investments and cash		2,335,903			2,233,498
Premiums receivable		372,379			255,725
Prepaid reinsurance premiums		211,089			164,162
Reinsurance recoverable on paid losses		37,431			43,791
Reinsurance recoverable on unpaid losses and loss adjustment expenses		849,146			845,445
Deferred policy acquisition costs		64,509			63,984
Accrued investment income		14,079			14,492
Goodwill and other intangible assets		6,925			6,869
Current income tax receivable, net		13,032			15,391
Other assets		34,573			26,650
Total assets	$	3,939,066		$	3,670,007
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Reserves for losses and loss adjustment expenses	$	2,088,524		$	2,082,679
Unearned premiums		633,920			532,628
Reinsurance balances payable		144,078			108,699
Senior Notes		114,348			114,276
Deferred income tax, net		3,120			6,291
Accounts payable and other liabilities		113,268			21,999
Total liabilities		3,097,258			2,866,572
Stockholders’ equity:
Preferred stock, $.10 par value, authorized 1,000,000 shares, none issued	$	—		$	—
Common stock, $.10 par value, authorized 50,000,000 shares, issued 17,522,949 shares for 2012 and 17,467,615 shares for 2011		1,752			1,746
Additional paid-in capital		324,956			322,133
Treasury stock, at cost (3,511,380 shares for 2012 and 2011)		(155,801	)		(155,801	)
Retained earnings		587,912			565,109
Accumulated other comprehensive income		82,989			70,248
Total stockholders’ equity		841,808			803,435
Total liabilities and stockholders’ equity	$	3,939,066		$	3,670,007

The accompanying Notes to Interim Consolidated Financial Statements are an integral part of these financial statements.

3

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

(In thousands, except share and per share amounts)

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Gross written premiums	$	322,987		$	278,714		$	666,136		$	574,997
Revenues:
Net written premiums	$	190,252		$	183,363		$	433,297		$	376,439
Change in unearned premiums		5,765			(9,586	)		(54,161	)		(50,184	)
Net earned premiums		196,017			173,777			379,136			326,255
Net investment income		15,777			17,429			27,035			34,813
Total other-than-temporary impairment losses		(496	)		(833	)		(693	)		(1,096	)
Portion of loss recognized in other comprehensive income (pretax)		—			301			43			322
Net other-than-temporary impairment losses recognized in earnings		(496	)		(532	)		(650	)		(774	)
Net realized gains (losses)		4,217			3,006			6,059			1,618
Other income (expense)		387			573			1,298			1,564
Total revenues		215,902			194,253			412,878			363,476
Expenses:
Net losses and loss adjustment expenses		123,407			113,863			241,392			230,651
Commission expenses		29,503			28,030			58,953			54,230
Other operating expenses		39,819			35,777			76,126			72,352
Interest expense		2,049			2,047			4,098			4,093
Total expenses		194,778			179,717			380,569			361,326
Income (loss) before income taxes		21,124			14,536			32,309			2,150
Income tax expense (benefit)		6,225			5,032			9,506			539
Net income (loss)	$	14,899		$	9,504		$	22,803		$	1,611
Net income (loss) per common share:
Basic	$	1.06		$	0.62		$	1.63		$	0.10
Diluted	$	1.05		$	0.60		$	1.60		$	0.10
Average common shares outstanding:
Basic		14,006,361			15,372,670			13,992,901			15,554,670
Diluted		14,208,759			15,725,850			14,245,947			15,943,804

The accompanying Notes to Interim Consolidated Financial Statements are an integral part of these financial statements.

4

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

(In thousands)

	Three Months Ended June 30,
	2012			2011
Net income (loss)	$	14,899		$	9,504
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments, net of deferred tax of $2,976 and $8,390 in 2012 and 2011, respectively (1)		7,604			16,833
Change in foreign currency translation gains (losses), net of deferred tax of $452 and $(4) in 2012 and 2011, respectively		(840	)		(8	)
Other comprehensive income (loss)		6,764			16,825
Comprehensive income (loss)	$	21,663		$	26,329
(1) Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	$	9,039		$	15,450
Reclassification adjustment for net realized gains (losses) included in net income		(1,607	)		1,326
Reclassification adjustment for other-than-temporary impairment losses recognized in net income		172			57
Change in net unrealized gains (losses) on investments, net of tax	$	7,604		$	16,833

	Six Months Ended June 30,
	2012			2011
Net income (loss)	$	22,803		$	1,611
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments, net of deferred tax of $7,796 and $8,573 in 2012 and 2011, respectively (2)		16,553			16,871
Change in foreign currency translation gains (losses), net of deferred tax of $1,851 and $359 in 2012 and 2011, respectively		(3,812	)		923
Other comprehensive income (loss)		12,741			17,794
Comprehensive income (loss)	$	35,544		$	19,405
(2) Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	$	17,643		$	16,011
Reclassification adjustment for net realized gains (losses) included in net income		(1,335	)		830
Reclassification adjustment for other-than-temporary impairment losses recognized in net income		245			30
Change in net unrealized gains (losses) on investments, net of tax	$	16,553		$	16,871

The accompanying Notes to Interim Consolidated Financial Statements are an integral part of these financial statements.

5

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Unaudited)

For the Six Months Ended June 30, 2012

(In thousands, except share amounts)

	Common Stock				Additional Paid-in			Treasury Stock					Retained		Accumulated Other Comprehensive			Total Stockholders’
	Shares		Amount		Capital			Shares		Amount			Earnings		Income (Loss)			Equity
Balance, December 31, 2011		17,467,615	$	1,746	$	322,133			3,511,380	$	(155,801	)	$	565,109	$	70,248		$	803,435
Net income		—		—		—			—		—			22,803		—			22,803
Changes in comprehensive income:
Change in net unrealized gain (loss) on investments		—		—		—			—		—			—		16,037			16,037
Change in net non-credit other-than-temporary impairment losses		—		—		—			—		—			—		516			516
Change in foreign currency translation gain (loss)		—		—		—			—		—			—		(3,812	)		(3,812	)
Total comprehensive income		—		—		—			—		—			—		12,741			12,741
Shares issued under stock plan		55,334		6		(363	)		—		—			—		—			(357	)
Share-based compensation		—		—		3,186			—		—			—		—			3,186
Balance, June 30, 2012		17,522,949	$	1,752	$	324,956			3,511,380	$	(155,801	)	$	587,912	$	82,989		$	841,808

The accompanying Notes to Interim Consolidated Financial Statements are an integral part of these financial statements.

6

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

(In thousands)

	Six Months Ended June 30,
	2012			2011
Operating activities:
Net income (loss)	$	22,803		$	1,611
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation & amortization		2,040			2,084
Deferred income taxes		(9,800	)		(1,047	)
Net realized (gains) losses		(6,059	)		(1,618	)
Net other-than-temporary losses recognized in earnings		650			774
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses		3,741			(16,952	)
Reserves for losses and loss adjustment expenses		5,845			42,964
Prepaid reinsurance premiums		(46,927	)		(19,803	)
Unearned premiums		101,292			70,009
Premiums receivable		(119,834	)		(84,308	)
Deferred policy acquisition costs		(525	)		(5,096	)
Accrued investment income		413			1,251
Reinsurance balances payable		35,379			19,304
Current income taxes		1,497			(3,685	)
Other		24,513			8,897
Net cash provided by (used in) operating activities		15,028			14,385
Investing activities:
Fixed maturities
Redemptions and maturities		97,345			95,268
Sales		526,753			461,215
Purchases		(747,421	)		(505,278	)
Equity securities
Sales		1,600			2,107
Purchases		(3,397	)		(5,056	)
Change in payable for securities		70,265			17,825
Net change in short-term investments		(39,763	)		(29,848	)
Purchase of property and equipment		(2,353	)		(1,771	)
Net cash provided by (used in) investing activities		(96,971	)		34,462
Financing activities:
Purchase of treasury stock		—			(41,442	)
Proceeds of stock issued from employee stock purchase plan		313			360
Proceeds of stock issued from exercise of stock options		112			807
Net cash provided by (used in) financing activities		425			(40,275	)
Increase (decrease) in cash		(81,518	)		8,572
Cash at beginning of year		127,360			31,768
Cash at end of period	$	45,842		$	40,340
Supplemental cash information:
Income taxes paid, net	$	14,188		$	8,134
Interest paid	$	4,025		$	4,025
Issuance of stock to directors	$	242		$	210

The accompanying Notes to Interim Consolidated Financial Statements are an integral part of these financial statements.

7

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

Notes to Interim Consolidated Financial Statements

(Unaudited)

Note 1. Accounting Policies

The accompanying interim consolidated financial statements are unaudited and reflect all adjustments which, in the opinion of management, are necessary to fairly present the results of The Navigators Group, Inc. and its subsidiaries for the interim periods presented on the basis of United States generally accepted accounting principles (“GAAP” or “U.S. GAAP”). All such adjustments are of a normal recurring nature. All significant intercompany transactions and balances have been eliminated. The preparation of these financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported revenues and expenses during the reporting periods. The results of operations for any interim period are not necessarily indicative of results for the full year. The term “the Company” as used herein is used to mean The Navigators Group, Inc. and its subsidiaries, unless the context otherwise requires. The terms “Parent” or “Parent Company” are used to mean The Navigators Group, Inc. without its subsidiaries. These financial statements should be read in conjunction with the consolidated financial statements and notes contained in the Company’s 2011 Annual Report on Form 10-K. Certain amounts for the prior year have been reclassified to conform to the current year’s presentation.

Note 2. Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In September 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2011-08 amending Codification topic 350 – Intangibles – Goodwill and Other. The amendment simplifies how goodwill is tested for impairment by permitting entities to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value as a basis for determining whether it is necessary to perform the two step goodwill impairment test. The amendment is effective for the interim and annual goodwill impairment tests performed for fiscal years beginning after December 15, 2011. Adoption of this amendment had no impact on the Company’s consolidated financial condition, results of operations or cash flows.

In June 2011, the FASB issued ASU 2011-05 amending Codification Topic 220 – Comprehensive Income. The amendment requires that other comprehensive income be either presented in a single continuous statement or two separate but consecutive statements. In addition, the amendment requires the disclosure of reclassification adjustments for items reclassified from other comprehensive income to net income on the face of the financial statements. The amendment is effective for the interim and annual periods beginning after December 15, 2011 and should be applied retrospectively. This standard only affected the Company’s presentation of comprehensive income and did not affect the Company’s consolidated financial position, results of operations, or cash flows.

In May 2011, the FASB issued ASU 2011-04 amending Codification Topic 820 – Fair Value Measurements and Disclosures. The amendments were intended to result in common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (“IFRS”). The amendment expands and enhances current disclosures about fair value measurement and clarifies the FASB’s intent regarding the application of existing fair value measurement requirements in certain circumstances. The amendments are effective for the interim and annual periods beginning after December 15, 2011 and should be applied prospectively. Adoption of the amendment had no impact on the Company’s consolidated financial position, results of operations or cash flows.

8

In October 2010, the FASB issued ASU 2010-26 amending Codification Topic 944 – Financial Services – Insurance; Accounting for Costs Associated with Acquiring or Renewing Insurance Contracts. The amendment clarifies which costs relating to the acquisition of new or renewal insurance contracts qualify for deferral. In addition, the amendment limits deferrable costs that can be capitalized to those that are incremental direct costs related to the successful acquisition of new or renewal insurance contracts. The amendment is effective for fiscal years and interim periods within a fiscal year, beginning after December 15, 2011. The guidance is to be applied prospectively upon effectiveness of the amendment, with retrospective application permitted, but not required. The Company adopted this guidance prospectively in the first quarter of 2012. The amount of acquisition costs capitalized during the current year under the adopted guidance compared with the amount of acquisition costs that would have been capitalized during the year if the entity’s previous policy had been applied resulted in decreases in amounts capitalized of $0.8 million and $1.7 million for the three and six months ended June 30, 2012, respectively.

Note 3. Segment Information

The Company classifies its business into two underwriting segments consisting of the Insurance Companies segment (“Insurance Companies”) and the Lloyd’s Operations segment (“Lloyd’s Operations”), which are separately managed, and a Corporate segment (“Corporate”). Segment data for each of the two underwriting segments include allocations of the operating expenses of the wholly-owned underwriting management companies and the Parent Company’s operating expenses and related income tax amounts. The Corporate segment consists of the Parent Company’s investment income and interest expense and the related tax effect.

The Company evaluates the performance of each underwriting segment based on its underwriting and GAAP results. The Insurance Companies’ and the Lloyd’s Operations’ results are measured by taking into account net earned premiums, net losses and loss adjustment expenses (“LAE”), commission expenses, other operating expenses and other income (expense). Each segment maintains its own investments on which it earns income and realizes capital gains or losses. The Company’s underwriting performance is evaluated separately from the performance of its investment portfolios.

The Insurance Companies consist of Navigators Insurance Company, including its branch located in the United Kingdom (the “U.K. Branch”), and its wholly-owned subsidiary, Navigators Specialty Insurance Company (“Navigators Specialty”). They are primarily engaged in underwriting marine insurance and related lines of business, professional liability insurance and specialty lines of business, including contractors general liability insurance, commercial umbrella and primary and excess casualty businesses. Navigators Specialty underwrites specialty and professional liability insurance on an excess and surplus lines basis. Navigators Specialty is 100% reinsured by Navigators Insurance Company.

The Lloyd’s Operations primarily underwrite marine and related lines of business along with offshore energy, professional liability insurance and construction coverages for onshore energy business at Lloyd’s of London (“Lloyd’s”) through Syndicate 1221. The Lloyd’s Operations includes Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s underwriting agency which manages Syndicate 1221.

Navigators Management Company, Inc. (“NMC”) is a wholly-owned underwriting management company that produces, manages and underwrites insurance and reinsurance, and provides corporate services for the Company. The operating results for NMC are allocated to both the Insurance Companies and Lloyd’s Operations as appropriate.

The Insurance Companies’ and the Lloyd’s Operations’ underwriting results are measured based on underwriting profit or loss and the related combined ratio, which are both non-GAAP measures of underwriting profitability. Underwriting profit or loss is calculated from net earned premiums, less the sum of net losses and LAE, commission expenses, other operating expenses and other income (expense). The combined ratio is derived by dividing the sum of net losses and LAE, commission expenses, other operating expenses and other income (expense) by net earned premiums. A combined ratio of less than 100% indicates an underwriting profit and greater than 100% indicates an underwriting loss.

9

Financial data by segment for the three and six months ended June 30, 2012 and 2011 were as follows:

	Three Months Ended June 30, 2012
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	214,064		$	108,923		$	—		$	322,987
Net written premiums		134,065			56,187			—			190,252
Net earned premiums		141,577			54,440			—			196,017
Net losses and loss adjustment expenses		(100,003	)		(23,404	)		—			(123,407	)
Commission expenses		(21,117	)		(8,938	)		552			(29,503	)
Other operating expenses		(28,914	)		(10,905	)		—			(39,819	)
Other income (expense)		879			60			(552	)		387
Underwriting profit (loss)	$	(7,578	)	$	11,253		$	—		$	3,675
Net investment income		13,286			2,454			37			15,777
Net realized gains (losses)		2,325			1,396			—			3,721
Interest expense		—			—			(2,049	)		(2,049	)
Income (loss) before income taxes	$	8,033		$	15,103		$	(2,012	)	$	21,124
Income tax expense (benefit)		2,101			5,207			(1,083	)		6,225
Net income (loss)	$	5,932		$	9,896		$	(929	)	$	14,899
Identifiable assets	$	2,933,334		$	967,862		$	37,870		$	3,939,066
Losses and loss adjustment expenses ratio		70.6	%		43.0	%					63.0	%
Commission expense ratio		14.9	%		16.4	%					15.1	%
Other operating expense ratio (2)		19.9	%		19.9	%					20.0	%
Combined ratio		105.4	%		79.3	%					98.1	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

10

	Three Months Ended June 30, 2011
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	186,767		$	91,947		$	—		$	278,714
Net written premiums		123,204			60,159			—			183,363
Net earned premiums		114,987			58,790			—			173,777
Net losses and loss adjustment expenses		(77,330	)		(36,533	)		—			(113,863	)
Commission expenses		(16,402	)		(12,042	)		414			(28,030	)
Other operating expenses		(26,516	)		(9,261	)		—			(35,777	)
Other income (expense)		626			361			(414	)		573
Underwriting profit (loss)	$	(4,635	)	$	1,315		$	—		$	(3,320	)
Net investment income		14,989			2,320			120			17,429
Net realized gains (losses)		3,100			(798	)		172			2,474
Interest expense		—			—			(2,047	)		(2,047	)
Income (loss) before income taxes	$	13,454		$	2,837		$	(1,755	)	$	14,536
Income tax expense (benefit)		4,617			1,029			(614	)		5,032
Net income (loss)	$	8,837		$	1,808		$	(1,141	)	$	9,504
Identifiable assets	$	2,716,634		$	898,895		$	40,380		$	3,655,909
Losses and loss adjustment expenses ratio		67.3	%		62.1	%					65.5	%
Commission expense ratio		14.3	%		20.5	%					16.1	%
Other operating expense ratio (2)		22.4	%		15.2	%					20.3	%
Combined ratio		104.0	%		97.8	%					101.9	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

11

	Six Months Ended June 30, 2012
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	462,402		$	203,734		$	—		$	666,136
Net written premiums		315,315			117,982			—			433,297
Net earned premiums		273,125			106,011			—			379,136
Net losses and loss adjustment expenses		(191,180	)		(50,212	)		—			(241,392	)
Commission expenses		(40,418	)		(19,824	)		1,289			(58,953	)
Other operating expenses		(54,259	)		(21,867	)		—			(76,126	)
Other income (expense)		2,521			66			(1,289	)		1,298
Underwriting profit (loss)	$	(10,211	)	$	14,174		$	—		$	3,963
Net investment income		22,221			4,737			77			27,035
Net realized gains (losses)		4,200			1,209			—			5,409
Interest expense		—			—			(4,098	)		(4,098	)
Income (loss) before income taxes	$	16,210		$	20,120		$	(4,021	)	$	32,309
Income tax expense (benefit)		3,980			6,933			(1,407	)		9,506
Net income (loss)	$	12,230		$	13,187		$	(2,614	)	$	22,803
Identifiable assets	$	2,933,334		$	967,862		$	37,870		$	3,939,066
Losses and loss adjustment expenses ratio		70.0	%		47.4	%					63.7	%
Commission expense ratio		14.8	%		18.7	%					15.5	%
Other operating expense ratio (2)		18.9	%		20.5	%					19.8	%
Combined ratio		103.7	%		86.6	%					99.0	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

12

	Six Months Ended June 30, 2011
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	393,543		$	181,454		$	—		$	574,997
Net written premiums		253,944			122,495			—			376,439
Net earned premiums		213,807			112,448			—			326,255
Net losses and loss adjustment expenses		(152,127	)		(78,524	)		—			(230,651	)
Commission expenses		(28,742	)		(26,449	)		961			(54,230	)
Other operating expenses		(53,315	)		(19,037	)		—			(72,352	)
Other income (expense)		2,317			208			(961	)		1,564
Underwriting profit (loss)	$	(18,060	)	$	(11,354	)	$	—		$	(29,414	)
Net investment income		29,972			4,575			266			34,813
Net realized gains (losses)		2,855			(2,183	)		172			844
Interest expense		—			—			(4,093	)		(4,093	)
Income (loss) before income taxes	$	14,767		$	(8,962	)	$	(3,655	)	$	2,150
Income tax expense (benefit)		4,845			(3,027	)		(1,279	)		539
Net income (loss)	$	9,922		$	(5,935	)	$	(2,376	)	$	1,611
Identifiable assets	$	2,716,634		$	898,895		$	40,380		$	3,655,909
Losses and loss adjustment expenses ratio		71.2	%		69.8	%					70.7	%
Commission expense ratio		13.4	%		23.5	%					16.6	%
Other operating expense ratio (2)		23.8	%		16.8	%					21.7	%
Combined ratio		108.4	%		110.1	%					109.0	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

13

The following tables provide additional financial data by segment for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended June 30, 2012
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	49,896	$	46,482	$	96,378
Property casualty		130,627		49,533		180,160
Professional liability		33,541		12,908		46,449
Total	$	214,064	$	108,923	$	322,987
Net written premiums :
Marine	$	31,786	$	33,025	$	64,811
Property casualty		76,842		16,172		93,014
Professional liability		25,437		6,990		32,427
Total	$	134,065	$	56,187	$	190,252
Net earned premiums:
Marine	$	35,535	$	32,927	$	68,462
Property casualty		82,175		16,617		98,792
Professional liability		23,867		4,896		28,763
Total	$	141,577	$	54,440	$	196,017

	Three Months Ended June 30, 2011
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	58,323	$	39,451	$	97,774
Property casualty		100,131		42,122		142,253
Professional liability		28,313		10,374		38,687
Total	$	186,767	$	91,947	$	278,714
Net written premiums :
Marine	$	41,802	$	32,042	$	73,844
Property casualty		62,015		22,682		84,697
Professional liability		19,387		5,435		24,822
Total	$	123,204	$	60,159	$	183,363
Net earned premiums:
Marine	$	41,877	$	37,734	$	79,611
Property casualty		55,351		16,259		71,610
Professional liability		17,759		4,797		22,556
Total	$	114,987	$	58,790	$	173,777

14

	Six Months Ended June 30, 2012
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	111,761	$	108,812	$	220,573
Property casualty		286,546		73,274		359,820
Professional liability		64,095		21,648		85,743
Total	$	462,402	$	203,734	$	666,136
Net written premiums :
Marine	$	74,651	$	81,550	$	156,201
Property casualty		191,374		25,060		216,434
Professional liability		49,290		11,372		60,662
Total	$	315,315	$	117,982	$	433,297
Net earned premiums:
Marine	$	70,810	$	67,536	$	138,346
Property casualty		156,543		29,774		186,317
Professional liability		45,772		8,701		54,473
Total	$	273,125	$	106,011	$	379,136

	Six Months Ended June 30, 2011
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	128,671	$	100,606	$	229,277
Property casualty		213,019		61,424		274,443
Professional liability		51,853		19,424		71,277
Total	$	393,543	$	181,454	$	574,997
Net written premiums :
Marine	$	96,020	$	81,713	$	177,733
Property casualty		124,922		31,068		155,990
Professional liability		33,002		9,714		42,716
Total	$	253,944	$	122,495	$	376,439
Net earned premiums:
Marine	$	82,436	$	74,712	$	157,148
Property casualty		98,286		28,153		126,439
Professional liability		33,085		9,583		42,668
Total	$	213,807	$	112,448	$	326,255

The Insurance Companies’ net earned premiums include $18.2 million and $25.5 million of net earned premiums from the U.K. Branch for the three months ended June 30, 2012 and 2011 and $39.1 million and $42.9 million of net earned premiums from the U.K. Branch for the six months ended June 30, 2012 and 2011, respectively.

15

Note 4. Reinsurance Ceded

The Company’s ceded earned premiums were $120.7 million and $82.1 million for the three months ended June 30, 2012 and 2011 and $185.8 million and $178.1 million for the six months ended June 30, 2012 and 2011, respectively. The Company’s ceded incurred losses were $61.7 million and $53.1 million for the three months ended June 30, 2012 and 2011 and were $123.2 million and $127.7 million for the six months ended June 30, 2012 and 2011, respectively.

The following table lists the Company’s 20 largest reinsurers measured by the amount of reinsurance recoverable for ceded losses and LAE and ceded unearned premium (constituting approximately 73.4% of the total recoverable), together with the reinsurance recoverable and collateral as of June 30, 2012, and the reinsurers’ ratings from the A.M. Best Company (“AMB”) or Standard & Poor’s (“S&P”):

	Reinsurance Recoverables
	Unearned		Paid/Unpaid				Collateral
In thousands	Premium		Losses		Total		Held(1)		AMB		S&P
Everest Reinsurance Company	$	16,225	$	75,837	$	92,062	$	6,179		A+		A+
Munich Reinsurance America Inc.		11,108		78,824		89,932		222		A+		AA-
Swiss Reinsurance America Corporation		5,076		84,310		89,386		6,556		A+		AA-
Transatlantic Reinsurance Company		15,570		73,065		88,635		6,745		A		A+
National Indemnity Company		34,376		37,716		72,092		15,981		A++		AA+
Lloyd’s Syndicate #2003		8,092		32,416		40,508		8,245		A		A+
Partner Reinsurance Europe		9,447		31,013		40,460		22,540		A+		A+
Allied World Reinsurance		8,108		21,459		29,567		2,405		A		A
Berkley Insurance Company		1,848		27,099		28,947		596		A+		A+
General Reinsurance Corporation		675		26,487		27,162		890		A++		AA+
Scor Global P&C SE		13,613		11,644		25,257		9,190		A		A+
Tower Insurance Company		10,331		14,166		24,497		4,541		A-		NR
Scor Holding (Switzerland) AG		1,323		20,988		22,311		9,069		A		A+
Validus Reinsurance Ltd.		2,979		18,560		21,539		9,745		A		A-
Ace Property and Casualty Insurance Company		1,022		19,824		20,846		—		A+		AA-
Platinum Underwriters Re		558		18,884		19,442		1,994		A		A-
Munchener Ruckversicherungs-Gesellschaft		390		19,037		19,427		6,719		A+		AA-
Sirius America Insurance Company		88		19,205		19,293		335		A		A-
AXIS Re Europe		4,252		13,187		17,439		5,742		A		A+
Lloyd’s Syndicate #4000		2,499		14,341		16,840		2,216		A		A+
Top 20 Total	$	147,580	$	658,062	$	805,642	$	119,910
All Others		63,509		228,515		292,024		91,959
Total	$	211,089	$	886,577	$	1,097,666	$	211,869

(1) — Collateral includes letter of credit, balances payable and other balances held by the Company’s Insurance Companies and Lloyd’s Operations.

16

Note 5. Stock-Based Compensation

Stock-based compensation granted under the Company’s stock plans is expensed in tranches over the vesting period. Options and non-performance based grants generally vest equally over a three or four year period and the options have a maximum term of ten years. Certain non-performance based grants vest over five years with one-third vesting in each of the third, fourth and fifth years. The Company’s performance based share grants generally consist of two types of awards. The restricted stock units issued in 2011 and after will cliff vest over a three year period, with 50% vesting in full, and 50% dependent on the compound annual growth in book value per share for the three years immediately prior to the vesting date, with actual shares that vest ranging between 150% to 0% of that portion of the original award. Those performance based restricted stock units issued prior to 2011 generally vest over five years with one-third vesting in each of the third, fourth and fifth years, dependent on the rolling three-year average return on equity based on the three years prior to the year in which the vesting occurs, with actual shares that vest ranging between 150% to 0% of the original award.

The amounts charged to expense for stock-based compensation for the three and six months ended June 30, 2012 and 2011 are presented in the following table:

	Three Months Ended June 30,					Six Months Ended June 30,
In thousands	2012		2011			2012		2011
Restricted stock units	$	1,974	$	531		$	3,186	$	1,479
Directors restricted stock grants (1)		60		60			120		120
Employee stock purchase plan		41		68			15		123
Stock appreciation rights (2)		—		(57	)		—		(53	)
Stock options		—		—			—		—
Total stock-based compensation	$	2,075	$	602		$	3,321	$	1,669

(1) —  Relates to non-employee directors serving on the Parent Company's Board of Directors, all of whom have been elected by the Company's stockholders, as well as non-employee directors serving on NUAL's Board of Directors.

(2) —  All outstanding stock appreciation rights were exercised during 2011. The Company has no current plans to issue stock appreciation rights under the 2005 Amended and Restated Stock Incentive Plan.

Note 6. Lloyd’s Syndicate 1221

The Company’s Lloyd’s Operations included in the consolidated financial statements represents its participation in Syndicate 1221. Syndicate 1221’s stamp capacity is £184 million ($289 million) for the 2012 underwriting year compared to £175 million ($280 million) for the 2011 underwriting year. Stamp capacity is a measure of the amount of premiums a Lloyd’s syndicate is authorized to write based on a business plan approved by the Council of Lloyd’s. Syndicate 1221’s stamp capacity is expressed net of commission (as is standard at Lloyd’s). The Syndicate 1221 premiums recorded in the Company’s financial statements are gross of commission. The Company controlled 100% of Syndicate 1221’s stamp capacity for the 2012 and 2011 underwriting years through its wholly-owned Lloyd’s corporate member.

17

The Company provides letters of credit and posts cash to Lloyd’s to support its participation in Syndicate 1221’s stamp capacity. As of June 30, 2012, the Company had provided letters of credit of $154.5 million and did not have any cash collateral posted. If Syndicate 1221 increases its stamp capacity and the Company participates in the additional stamp capacity, or if Lloyd’s changes the capital requirements, the Company may be required to supply additional collateral acceptable to Lloyd’s. If the Company is unwilling or unable to provide additional acceptable collateral, the Company will be required to reduce its participation in the stamp capacity of Syndicate 1221. The letters of credit are provided through a credit facility with a consortium of banks which provides the Company with the ability to have letters of credit issued to support Syndicate 1221’s stamp capacity at Lloyd’s for the 2011 and 2012 underwriting years. If any letters of credit remain outstanding under the facility after December 31, 2012, the Company would be required to post additional collateral to secure the remaining letters of credit. If the credit facility is not renewed prior to December 31, 2012, the Company will need to find internal and/or external sources to provide either letters of credit or other collateral in order to continue to participate in Syndicate 1221. The credit facility is collateralized by all of the common stock of Navigators Insurance Company. Refer to Note 11, Credit Facility, for additional information.

Note 7. Income Taxes

The Company is subject to the tax laws and regulations of the United States (“U.S.”) and the foreign countries in which it operates. The Company files a consolidated U.S. Federal tax return, which includes all domestic subsidiaries and the U.K. Branch. The income from the foreign operations is designated as either U.S. connected income or non-U.S. connected income. Lloyd’s is required to pay U.S. income tax on U.S. connected income written by Lloyd’s syndicates. Lloyd’s and the Internal Revenue Service (“IRS”) have entered into an agreement whereby the amount of tax due on U.S. connected income is calculated by Lloyd’s and remitted directly to the IRS. These amounts are then charged to the corporate member in proportion to their participation in the relevant syndicates. The Company’s corporate member is subject to this agreement and will receive U.K. tax credits in the United Kingdom (“U.K.”) for any U.S. income tax incurred up to the U.K. income tax charged on the U.S. connected income. The non-U.S. connected insurance income would generally constitute taxable income under the Subpart F income section of the U.S. Internal Revenue Code (“Subpart F”) since less than 50% of Syndicate 1221’s premiums are derived within the U.K. and would therefore be subject to U.S. taxation when the Lloyd’s year of account closes. Taxes are accrued at a 35% rate on the Company’s foreign source insurance income and foreign tax credits, where available, are utilized to offset U.S. tax as permitted. The Company’s effective tax rate for Syndicate 1221 taxable income could substantially exceed 35% to the extent the Company is unable to offset U.S. taxes paid under Subpart F tax regulations with U.K. tax credits on future underwriting year distributions. U.S. taxes are not accrued on the earnings of the Company’s foreign agencies as these earnings are not includable as Subpart F income in the current year. These earnings are subject to taxes under U.K. tax regulations at a 26% rate through March 31, 2012. A finance bill was enacted in the U.K. that reduces the U.K. corporate tax rate from 26% to 24% effective April 2012. The effect of such tax rate change was not material.

The Company has not provided for U.S. deferred income taxes on the undistributed earnings of approximately $82.2 million of its non-U.S. subsidiaries since these earnings are intended to be permanently reinvested in the non-U.S. subsidiaries. However, in the future, if such earnings were distributed to the Company, taxes of approximately $1.6 million, assuming all foreign tax credits are realized, would be payable on such undistributed earnings and would be reflected in the tax provision for the year in which these earnings are no longer intended to be permanently reinvested in the foreign subsidiary.

Unrecognized tax benefits are differences between tax positions taken in the tax returns and benefits recognized in the financial statements. The Company has no unrecognized tax benefits as of June 30, 2012 and 2011. The Company did not incur any interest or penalties related to unrecognized tax benefits for the three and six months ended June 30, 2012 and 2011. The Company is currently not under examination by any major U.S. or foreign tax authority and is generally subject to U.S. Federal, state or local, or foreign tax examinations by tax authorities for 2008 and subsequent years.

18

The Company recorded income tax expense of $6.2 million and $9.5 million for the three and six months ended June 30, 2012 compared to $5.0 million and $0.5 million for the same periods in 2011, resulting in an effective tax rate of 29.5% and 29.4% for the three and six months ended June 30, 2012 and 34.6% and 25.1% for the comparable periods in 2011. The effective tax rate on net investment income was 28.2% and 26.9% for the three and six months ended June 30, 2012 compared to 28.7% and 28.6% for the same periods in 2011.

The Company had state and local deferred tax assets amounting to potential future tax benefits of $0.6 million and $0.2 million as of June 30, 2012 and December 31, 2011, respectively. Included in the deferred tax assets are state and local net operating loss carry-forwards of $0.2 million as of both June 30, 2012 and December 31, 2011. A valuation allowance was established for the full amount of these potential future tax benefits due to the uncertainty associated with their realization. The Company’s state and local tax carry-forwards as of June 30, 2012 expire from 2024 to 2031.

Note 8. Senior Notes due May 1, 2016

On April 17, 2006, the Company completed a public debt offering of $125 million principal amount of 7% senior unsecured notes (the “Senior Notes”) and received net proceeds of $123.5 million. The principal amount of the Senior Notes is payable in a single installment on May 1, 2016. In April 2009, the Company repurchased $10.0 million aggregate principal amount of the Senior Notes from an unaffiliated note holder on the open market for $7.0 million, which generated a $3.0 million pre-tax gain that was reflected in Other income. The Senior Notes liability at June 30, 2012 was $114.3 million. The unamortized discount at June 30, 2012 was $0.7 million. The aggregate principal amount of the Senior Notes that will be repaid on May 1, 2016 as a result of these transactions is $115.0 million.

The fair value of the Senior Notes was $121.0 million and $119.3 million as of June 30, 2012 and December 31, 2011. The fair value was determined using quoted prices for similar instruments in active markets and is classified as Level 2 within the fair value hierarchy as defined by the accounting guidance for fair value measurements.

Interest is payable on the Senior Notes each May 1 and November 1. The effective interest rate related to the Senior Notes, based on the proceeds net of discount and all issuance costs, is approximately 7.17%. Interest expense on the Senior Notes for the three and six months ended each of June 30, 2012 and 2011 was $2.0 million and $4.1 million, respectively.

The Senior Notes, the Company’s only senior unsecured obligation, will rank equally with any future senior unsecured indebtedness. The Company may redeem the Senior Notes at any time and from time to time, in whole or in part, at a “make-whole” redemption price. The terms of the Senior Notes contain various restrictive business and financial covenants typical for debt obligations of this type, including limitations on mergers, liens and dispositions of the common stock of certain subsidiaries. As of June 30, 2012, the Company was in compliance with all such covenants.

Note 9. Commitments and Contingencies

In the ordinary course of conducting business, the Company’s subsidiaries are involved in various legal proceedings, either indirectly as insurers for parties or directly as defendants. Most of these proceedings consist of claims litigation involving the Company’s subsidiaries as either (a) liability insurers defending or providing indemnity for third party claims brought against insureds or (b) insurers defending first party coverage claims brought against them. The Company accounts for such activity through the establishment of unpaid loss and loss adjustment reserves. The Company’s management believes that the ultimate liability, if any, with respect to such ordinary-course claims litigation, after consideration of provisions made for potential losses and cost of defense, will not be material to the Company’s consolidated financial condition, results of operations or cash flows.

The Company’s subsidiaries are also from time to time involved with other legal actions, some of which assert claims for substantial amounts. These actions include claims asserting extra-contractual obligations, such as claims involving allegations of bad faith in the handling of claims or the underwriting of policies. In general, the Company believes it has valid defenses to these cases. The Company’s management expects that the ultimate liability, if any, with respect to future extra-contractual matters will not be material to its consolidated financial position, results of operations or cash flows. Nonetheless, given the large or indeterminate amounts sought in certain of these matters, and the inherent unpredictability of litigation, an adverse outcome in such matters could, from time to time, have a material adverse outcome on the Company’s consolidated results of operations or cash flows in a particular fiscal quarter or year.

19

Note 10. Investments

The following tables set forth the Company’s cash and investments as of June 30, 2012 and December 31, 2011. The tables below includes other-than-temporarily impaired (“OTTI”) securities recognized within other comprehensive income (“OCI”).

	June 30, 2012
			Gross		Gross					OTTI
			Unrealized		Unrealized			Amortized		Recognized
In thousands	Fair Value		Gains		Losses			Cost		in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	454,523	$	10,330	$	(160	)	$	444,353	$	—
States, municipalities and political subdivisions		426,218		29,960		(115	)		396,373		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		398,310		17,393		(44	)		380,961		—
Residential mortgage obligations		37,805		44		(1,651	)		39,412		(887	)
Asset-backed securities		54,416		933		(33	)		53,516		—
Commercial mortgage-backed securities		209,273		14,456		(55	)		194,872		—
Subtotal	$	699,804	$	32,826	$	(1,783	)	$	668,761	$	(887	)
Corporate bonds		443,884		18,519		(779	)		426,144		—
Total fixed maturities	$	2,024,429	$	91,635	$	(2,837	)	$	1,935,631	$	(887	)
Equity securities—common stocks		103,649		29,709		(517	)		74,457		—
Short-term investments		161,983		—		—			161,983		—
Cash		45,842		—		—			45,842		—
Total	$	2,335,903	$	121,344	$	(3,354	)	$	2,217,913	$	(887	)

	December 31, 2011
			Gross		Gross					OTTI
			Unrealized		Unrealized			Amortized		Recognized
In thousands	Fair Value		Gains		Losses			Cost		in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	336,070	$	8,979	$	(383	)	$	327,474	$	—
States, municipalities and political subdivisions		410,836		28,887		(108	)		382,057		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		395,860		17,321		(3	)		378,542		—
Residential mortgage obligations		23,148		8		(2,848	)		25,988		(1,682	)
Asset-backed securities		48,934		695		(75	)		48,314		—
Commercial mortgage-backed securities		216,034		10,508		(593	)		206,119		—
Subtotal	$	683,976	$	28,532	$	(3,519	)	$	658,963	$	(1,682	)
Corporate bonds		457,187		15,743		(6,772	)		448,216		—
Total fixed maturities	$	1,888,069	$	82,141	$	(10,782	)	$	1,816,710	$	(1,682	)
Equity securities—common stocks		95,849		23,240		(958	)		73,567		—
Short-term investments		122,220		—		—			122,220		—
Cash		127,360		—		—			127,360
Total	$	2,233,498	$	105,381	$	(11,740	)	$	2,139,857	$	(1,682	)

20

The fair value of the Company’s investment portfolio may fluctuate significantly in response to various factors such as changes in interest rates, investment quality ratings, equity prices, foreign exchange rates and credit spreads. The Company does not have the intent to sell nor is it more likely than not that it will have to sell debt securities in unrealized loss positions that are not other-than-temporarily impaired before recovery. The Company may realize investment losses to the extent its liquidity needs require the disposition of fixed maturity securities in unfavorable interest rate, liquidity or credit spread environments. Significant changes in the factors the Company considers when evaluating investment for impairment losses could result in a significant change in impairment losses reported in the consolidated financial statements.

The contractual maturity dates for fixed maturity securities categorized by the number of years until maturity as of June 30, 2012 are shown in the following table:

	June 30, 2012
			Amortized
In thousands	Fair Value		Cost
Due in one year or less	$	56,876	$	56,483
Due after one year through five years		658,027		641,379
Due after five years through ten years		379,158		353,733
Due after ten years		230,564		215,275
Mortgage- and asset-backed securities		699,804		668,761
Total	$	2,024,429	$	1,935,631

Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Due to the periodic repayment of principal, the mortgage-backed and asset-backed securities are estimated to have an effective maturity of approximately 3.6 years.

The following table shows the amount and percentage of the Company’s fixed maturities as of June 30, 2012 by S&P credit rating or, if an S&P rating is not available, the equivalent Moody’s Investor Services (“Moody’s”) rating. The table includes fixed maturities at fair value, and the total rating is the weighted average quality rating.

				Percent of
In thousands	Rating	Fair Value		Total
Rating description:
Extremely strong	AAA	$	341,094		17	%
Very strong	AA		1,150,879		56	%
Strong	A		381,490		19	%
Adequate	BBB		132,820		7	%
Speculative	BB & Below		14,282		1	%
Not rated	NR		3,864		0	%
Total		$	2,024,429		100	%

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The following table summarizes all securities in a gross unrealized loss position as of June 30, 2012 and December 31, 2011, showing the aggregate fair value and gross unrealized loss by the length of time those securities had continuously been in a gross unrealized loss position as well as the relevant number of securities.

	June 30, 2012						December 31, 2011
In thousands, except # of securities	Number of Securities		Fair Value		Gross Unrealized Loss		Number of Securities		Fair Value		Gross Unrealized Loss
Fixed maturities:
U.S. Government Treasury bonds,agency bonds, and foreign government bonds
0-6 months		13	$	55,371	$	71		7	$	58,587	$	98
7-12 months		—		—		—		—		—		—
> 12 months		1		4,580		89		2		6,883		285
Subtotal		14	$	59,951	$	160		9	$	65,470	$	383
States, municipalities and political subdivisions
0-6 months		5	$	3,805	$	48		7	$	5,894	$	72
7-12 months		5		3,369		46		1		216		1
> 12 months		2		1,580		21		5		2,420		35
Subtotal		12	$	8,754	$	115		13	$	8,530	$	108
Agency mortgage-backed securities
0-6 months		2	$	1,683	$	44		3	$	5,087	$	3
7-12 months		—		—		—		—		—		—
> 12 months		—		—		—		—		—		—
Subtotal		2	$	1,683	$	44		3	$	5,087	$	3
Residential mortgage obligations
0-6 months		1	$	18,163	$	56		6	$	6,672	$	184
7-12 months		7		2,673		88		7		5,250		313
> 12 months		48		12,151		1,507		47		10,749		2,351
Subtotal		56	$	32,987	$	1,651		60	$	22,671	$	2,848
Asset-backed securities
0-6 months		2	$	7,045	$	4		2	$	4,933	$	12
7-12 months		1		369		1		5		6,645		63
> 12 months		5		4,610		28		1		2		—
Subtotal		8	$	12,024	$	33		8	$	11,580	$	75
Commercial mortgage-backed securities
0-6 months		3	$	520	$	1		6	$	5,465	$	29
7-12 months		4		3,754		43		3		6,840		550
> 12 months		4		1,035		11		3		1,503		14
Subtotal		11	$	5,309	$	55		12	$	13,808	$	593
Corporate bonds
0-6 months		3	$	18,246	$	47		52	$	135,516	$	4,539
7-12 months		16		35,128		443		18		27,561		1,457
> 12 months		10		13,406		289		8		14,898		776
Subtotal		29	$	66,780	$	779		78	$	177,975	$	6,772
Total fixed maturities		132	$	187,488	$	2,837		183	$	305,121	$	10,782
Equity securities—common stocks
0-6 months		1	$	1,579	$	469		4	$	3,320	$	587
7-12 months		1		1,540		48		1		1,629		371
> 12 months		—		—		—		—		—		—
Total equity securities		2	$	3,119	$	517		5	$	4,949	$	958

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As of June 30, 2012 and December 31, 2011, the largest single unrealized loss by a non-government backed issuer in the investment portfolio was $0.4 million and $1.4 million, respectively.

The Company analyzes the unrealized losses quarterly to determine if any are other-than-temporary. The above unrealized losses have been determined to be temporary based on our analysis.

For debt securities, when assessing whether the amortized cost basis of the security will be recovered, the Company compares the present value of cash flows expected to be collected in relation to the current book value. Any shortfalls of the present value of the cash flows expected to be collected to the amortized cost basis is considered the credit loss portion of OTTI losses and is recognized in earnings. All non-credit losses are recognized as changes in OTTI losses within OCI.

To determine whether the unrealized loss on structured securities is other-than-temporary, the Company analyzes the projections provided by its investment managers with respect to an expected principal loss under a range of scenarios and utilizes the most likely outcomes. The analysis relies on actual collateral performance measures such as default rate, prepayment rate and loss severity. These assumptions are applied throughout the remaining term of the deal, incorporating the transaction structure and priority of payments, to generate loss adjusted cash flows. Results of the analysis will indicate whether the security is expected ultimately to incur a loss or whether there is a material impact on yield due to either a projected loss or a change in cash flow timing. A break even default rate is also calculated. A comparison of the break even default rate to the actual default rate provides an indication of the level of cushion or coverage to the first dollar principal loss. The analysis applies the stated assumptions throughout the remaining term of the transaction to forecast cash flows, which are then applied through the transaction structure to determine whether there is a loss to the security. For securities in which a tranche loss is present, and the net present value of loss adjusted cash flows is less than book value, impairment is recognized. The output data also includes a number of additional metrics such as average life remaining, original and current credit support, over 60 day delinquency and security rating.

The significant inputs used to measure the amount of credit loss recognized in earnings were actual delinquency rates, default probability assumptions, severity assumptions and prepayment assumptions. Projected losses are a function of both loss severity and probability of default. Default probability and severity assumptions differ based on property type, vintage and the stress of the collateral. The Company does not intend to sell any of these securities and it is more likely than not that it will not be required to sell these securities before the recovery of the amortized cost basis.

For equity securities, in general, the Company focuses its attention on those securities with a fair value less than 80% of their cost for six or more consecutive months. If warranted as the result of conditions relating to a particular security, the Company will focus on a significant decline in fair value regardless of the time period involved. Factors considered in evaluating potential impairment include, but are not limited to, the current fair value as compared to cost of the security, the length of time the investment has been below cost and by how much the investment is below cost. If an equity security is deemed to be other-than-temporarily impaired, the cost is written down to fair value with the loss recognized in earnings.

For equity securities, the Company also considers its intent to hold securities as part of the process of evaluating whether a decline in fair value represents an other-than-temporary decline in value. For fixed maturity securities, the Company considers its intent to sell a security and whether it is more likely than not that the Company will be required to sell a security before the anticipated recovery as part of the process of evaluating whether a security’s unrealized loss represents an other-than-temporary decline. The Company’s ability to hold such securities is supported by sufficient cash flow from its operations and from maturities within its investment portfolio in order to meet its claims payment and other disbursement obligations arising from its underwriting operations without selling such investments. With respect to securities where the decline in value is determined to be temporary and the security’s value is not written down, a subsequent decision may be made to sell that security and realize a loss. Subsequent decisions on security sales are made within the context of overall risk monitoring, changing information and market conditions.

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The following table summarizes the gross unrealized investment losses as of June 30, 2012 by the length of time that the fair value continues to be less than 80% of amortized cost:

	June 30, 2012
	Fixed		Equity
In thousands	Maturities		Securities		Total
Less than three months	$	—	$	—	$	—
Longer than three months and less than six months		—		468		468
Longer than six months and less than twelve months		—		—		—
Longer than twelve months		230		—		230
Total	$	230	$	468	$	698

The table below summarizes the Company’s activity related to OTTI losses for the periods indicated:

	Three Months Ended June 30,								Six Months Ended June 30,
	2012				2011				2012				2011
In thousands, except # of securities	Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount
Total OTTI losses:
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		—		—		6		516		1		54		7		549
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		2		496		1		317		3		639		1		547
Total		2	$	496		7	$	833		4	$	693		8	$	1,096
Less: Portion of loss in accumulated other comprehensive income (loss):
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				301				43				322
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	—			$	301			$	43			$	322
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				215				11				227
Asset-backed securities				—				—				—				—
Equities				496				317				639				547
Total			$	496			$	532			$	650			$	774

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The following table summarizes the cumulative amounts related to the Company’s credit loss portion of the OTTI losses on debt securities for the three and six months ended June 30, 2012 and 2011. The Company does not intend to sell and it is more likely than not that it will not be required to sell, the securities prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in other comprehensive income:

	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2012		2011		2012		2011
Beginning balance	$	3,332	$	2,239	$	3,321	$	2,228
Additions for credit loss impairments recognized in the current period on securities not previously impaired		—		—		—		—
Additions for credit loss impairments recognized in the current period on securities previously impaired		—		215		11		226
Reductions for credit loss impairments previously recognized on securities sold during the period		—		—		—		—
Ending balance	$	3,332	$	2,454	$	3,332	$	2,454

The contractual maturity dates for fixed maturity securities categorized by the number of years until maturity, with a gross unrealized loss as of June 30, 2012 is presented in the following table:

	June 30, 2012
	Gross Unrealized Losses					Fair Value
			Percent of					Percent of
In thousands	Amount		Total			Amount		Total
Due in one year or less	$	108		4	%	$	11,872		6	%
Due after one year through five years		530		19	%		77,548		41	%
Due after five years through ten years		305		11	%		33,587		18	%
Due after ten years		111		4	%		12,478		7	%
Mortgage- and asset-backed securities		1,783		62	%		52,003		28	%
Total	$	2,837		100	%	$	187,488		100	%

The Company’s net investment income was derived from the following sources:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities	$	15,006		$	16,844		$	30,416		$	34,034
Equity securities		994			859			1,941			1,642
Short-term investments		701			274			1,014			542
Total investment income		16,701			17,977			33,371			36,218
Investment expenses		(924	)		(548	)		(6,336	)		(1,405	)
Net investment income	$	15,777		$	17,429		$	27,035		$	34,813

Investment expenses for the six months ended June 30, 2012 include $4.5 million of interest expense related to the settlement of a dispute with Equitas over foregone interest on amounts that were due on certain reinsurance contracts. In the dispute Equitas alleged that we failed to make timely payments to them under certain reinsurance agreements in connection with subrogation recoveries received by the Company with respect to several catastrophe losses that occurred in the late 1980’s and early 1990’s.

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The change in net unrealized gains and losses, inclusive of the change in the non-credit portion of OTTI losses, consisted of:

	Six Months Ended June 30,
In thousands	2012		2011
Fixed maturities	$	17,439	$	21,206
Equity securities		6,910		4,238
Gross unrealized gains (losses)		24,349		25,444
Deferred income tax		7,796		8,573
Change in unrealized gains (losses), net	$	16,553	$	16,871

Realized gains and losses, excluding net OTTI losses recognized in earnings, for the periods indicated were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities:
Gains	$	4,717		$	4,443		$	7,858		$	7,312
Losses		(231	)		(2,277	)		(1,530	)		(6,534	)
Fixed maturities, net	$	4,486		$	2,166		$	6,328		$	778
Equity securities:
Gains	$	204		$	840		$	204		$	840
Losses		(473	)		—			(473	)		—
Equity securities, net	$	(269	)	$	840		$	(269	)	$	840
Net realized gains (losses)	$	4,217		$	3,006		$	6,059		$	1,618

The following tables present, for each of the fair value hierarchy levels as defined by the accounting guidance for fair value measurements and described below, the Company’s fixed maturities and equity securities by asset class that are measured at fair value on a recurring basis as of June 30, 2012 and December 31, 2011:

	June 30, 2012
In thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	174,237	$	280,286	$	—	$	454,523
States, municipalities and political subdivisions		—		426,218		—		426,218
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		398,310		—		398,310
Residential mortgage obligations		—		37,805		—		37,805
Asset-backed securities		—		54,416		—		54,416
Commercial mortgage-backed securities		—		209,273		—		209,273
Subtotal	$	—	$	699,804	$	—	$	699,804
Corporate bonds		—		443,884		—		443,884
Total fixed maturities	$	174,237	$	1,850,192	$	—	$	2,024,429
Equity securities—common stocks		103,649		—		—		103,649
Total	$	277,886	$	1,850,192	$	—	$	2,128,078

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	December 31, 2011
In thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	136,625	$	199,445	$	—	$	336,070
States, municipalities and political subdivisions		—		410,836		—		410,836
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		395,860		—		395,860
Residential mortgage obligations		—		23,148		—		23,148
Asset-backed securities		—		48,934		—		48,934
Commercial mortgage-backed securities		—		216,034		—		216,034
Subtotal	$	—	$	683,976	$	—	$	683,976
Corporate bonds		—		457,187		—		457,187
Total fixed maturities	$	136,625	$	1,751,444	$	—	$	1,888,069
Equity securities—common stocks		95,849		—		—		95,849
Total	$	232,474	$	1,751,444	$	—	$	1,983,918

The fair value of financial instruments is determined based on the following fair value hierarchy:

Level 1 – Quoted prices for identical instruments in active markets. Examples are listed equity and fixed income securities traded on an exchange. Treasury securities would generally be considered Level 1.

Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Examples are asset-backed and mortgage-backed securities that are similar to other asset-backed or mortgage-backed securities observed in the market.

Level 3 – Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. An example would be a private placement with minimal liquidity.

The Company did not have any transfers between Levels 1 and 2 as of June 30, 2012 and December 31, 2011.

There were no significant judgments made in classifying instruments in the fair value hierarchy.

As of June 30, 2012, the Company did not have any Level 3 assets. Any pricing where the input is based solely on a broker price is deemed to be a Level 3 price.

The following tables present a reconciliation of the beginning and ending balances for all investments measured at fair value using Level 3 inputs during the six months ended June 30, 2011:

	For The Six Months Ended June 30, 2011
In thousands	Beginning Balance		Realized Gains (Losses)		Unrealized Gains (Losses)			Purchases			Sales		Settlements		Transfers into Level 3		Transfers out of Level 3			Ending Balance
Assets:
Commercial	$	1,837	$	—	$	(26	)	$	(4	)	$	—	$	—	$	—	$	(1,807	)	$	—
Total assets	$	1,837	$	—	$	(26	)	$	(4	)	$	—	$	—	$	—	$	(1,807	)	$	—

As of June 30, 2012 and December 31, 2011, fixed maturities with amortized values of $10.0 million and $10.2 million, respectively, were on deposit with various state insurance departments. In addition, as of June 30, 2012, investments of $1.2 million were on deposit with a U.K. bank to comply with the regulatory requirements of the Financial Services Authority for Navigators Insurance Company’s U.K. Branch. In addition, as of June 30, 2012 and December 31, 2011, $0.3 million of investments were pledged as security under a reinsurance treaty.

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As of June 30, 2012 and December 31, 2011, the Company did not have a concentration of greater than 5% of invested assets in a single non-U.S. government-backed issuer.

Note 11. Credit Facility

On April 1, 2011, the Company entered into a $165 million credit facility agreement with ING Bank N.V., London Branch, individually and as Administrative Agent, and a syndicate of lenders. The credit facility, which is denominated in U.S. dollars, is utilized to fund the Company’s participation in Syndicate 1221 through letters of credit for the 2012 and 2011 underwriting years, as well as open prior years. The letters of credit issued under the facility are denominated in British pounds and their aggregate face amount will fluctuate based on exchange rates. If any letters of credit remain outstanding under the facility after December 31, 2012, the Company would be required to post additional collateral to secure the remaining letters of credit. As of June 30, 2012, letters of credit with an aggregate face amount of $154.5 million were outstanding under the credit facility.

This credit facility contains customary covenants for facilities of this type, including restrictions on indebtedness and liens, limitations on mergers, dividends and the sale of assets, and requirements as to maintaining certain consolidated tangible net worth, statutory surplus and other financial ratios. The credit facility also provides for customary events of default, including failure to pay principal, interest or fees when due, failure to comply with covenants, any representation or warranty made by the Company being false in any material respect, default under certain other indebtedness, certain insolvency or receivership events affecting the Company and its subsidiaries, the occurrence of certain material judgments, or a change in control of the Company. The letter of credit facility is secured by a pledge of the stock of certain insurance subsidiaries of the Company. To the extent the aggregate face amount issued under the credit facility exceeds the commitment amount, the Company is required to post collateral with the lead bank of the consortium. The Company was in compliance with all covenants under the credit facility as of June 30, 2012.

The applicable margin and applicable fee rate payable under the credit facility are based on a tiered schedule that is based on the Company’s then-current ratings issued by S&P and Moody’s with respect to the Company’s Senior Notes without third-party credit enhancement, and the amount of the Company’s own collateral utilized to fund its participation in Syndicate 1221.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

NOTE ON FORWARD-LOOKING STATEMENTS

Some of the statements in this Quarterly Report on Form 10-Q for The Navigators Group, Inc. and its subsidiaries (“the Company,” “we,” “us,” and “our”) are “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact included in or incorporated by reference in this Quarterly Report are forward-looking statements. Whenever used in this report, the words “estimate,” “expect,” “believe” or similar expressions or their negative are intended to identify such forward-looking statements. Forward-looking statements are derived from information that we currently have and assumptions that we make. We cannot assure that anticipated results will be achieved, since actual results may differ materially because of both known and unknown risks and uncertainties which we face. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. Factors that could cause actual results to differ materially from our forward-looking statements include, but are not limited to, the factors discussed in the “Risk Factors” section of our 2011 Annual Report on Form 10-K as well as:

• continued volatility in the financial markets and the current recession;

• risks arising from the concentration of our business in marine and energy, general liability and professional liability insurance, including the risk that market conditions for these lines could change adversely or that we could experience large losses in these lines;

• cyclicality in the property and casualty insurance business generally, and the marine insurance business specifically;

• risks that we face in entering new markets and diversifying the products and services that we offer, including risks arising from the development of our new specialty lines or our ability to manage effectively the rapid growth in our lines of business;

• changing legal, social and economic trends and inherent uncertainties in the loss estimation process, which could adversely impact the adequacy of loss reserves and the allowance for reinsurance recoverables;

• risks inherent in the preparation of our financial statements, which requires us to make many estimates and judgments;

• our ability to continue to obtain reinsurance covering our exposures at appropriate prices and/or in sufficient amounts;

• the counterparty credit risk of our reinsurers, including risks associated with the collection of reinsurance recoverable amounts from our reinsurers, who may not pay losses in a timely fashion, or at all;

• the effects of competition from other insurers;

• unexpected turnover of our professional staff and our ability to attract and retain qualified employees;

• increases in interest rates during periods in which we must sell fixed-income securities to satisfy liquidity needs may result in realized investment losses;

• our investment portfolio is exposed to market-wide risks and fluctuations, as well as to risks inherent in particular types of securities;

• exposure to significant capital market risks related to changes in interest rates, credit spreads, equity prices and foreign exchange rates which may adversely affect our results of operations, financial condition or cash flows;

• capital may not be available in the future, or may not be available on favorable terms;

• our ability to maintain or improve our insurance company ratings, as downgrades could significantly adversely affect us, including reducing our competitive position in the industry, or causing clients to choose an insurer with a certain rating level to use higher-rated insurers;

• risks associated with continued or increased premium levies by Lloyd’s of London (“Lloyd’s) for the Lloyd’s Central Fund and cash calls for trust fund deposits, or a significant downgrade of Lloyd’s rating by the A.M. Best Company (“A.M. Best”);

29

• changes in the laws, rules and regulations that apply to our insurance companies;

• the effect of the European Union Directive on Solvency II on how we manage our business, capital requirements and costs associated with conducting business;

• the inability of our subsidiaries to pay dividends to us in sufficient amounts, which would harm our ability to meet our obligations;

• weather-related events and other catastrophes (including man-made catastrophes) impacting our insureds and/or reinsurers;

• volatility in the market price of our common stock;

• exposure to recent uncertainties with regard to European sovereign debt holdings; and

• other risks that we identify in current and future filings with the Securities and Exchange Commission (“SEC”).

In light of these risks, uncertainties and assumptions, any forward-looking events discussed in this Form 10-Q may not occur. You are cautioned not to place undue reliance on any forward-looking statements, which speak only as of their respective dates.

OVERVIEW

The discussion and analysis of our financial condition and results of operations contained herein should be read in conjunction with our consolidated financial statements and accompanying notes which appear elsewhere in this Form 10-Q. It contains forward-looking statements that involve risks and uncertainties. Please refer to “Note on Forward-Looking Statements” for more information. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of various factors, including those discussed below and elsewhere in this Form 10-Q.

We are an international insurance company focusing on specialty products within the overall property and casualty insurance market. Our largest product line and most long-standing area of specialization is ocean marine insurance. We have also developed other specialty insurance lines, such as commercial primary and excess liability as well as specialty niches in professional liability, and have recently expanded our specialty reinsurance business.

We conduct operations through our Insurance Companies and our Lloyd’s Operations segments. The Insurance Companies segment consists of Navigators Insurance Company, which includes a United Kingdom Branch (the “U.K. Branch”), and Navigators Specialty Insurance Company (“Navigators Specialty”), which underwrites specialty and professional liability insurance on an excess and surplus lines basis. All of the insurance business written by Navigators Specialty is fully reinsured by Navigators Insurance Company pursuant to a 100% quota share reinsurance agreement. The insurance and reinsurance business written by our Insurance Companies is underwritten through our wholly-owned underwriting management companies, Navigators Management Company, Inc. (“NMC”) and Navigators Management (UK) Ltd. (“NMUK”).

Our Lloyd’s Operations segment includes Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s underwriting agency which manages Navigators Syndicate 1221 at Lloyd’s (“Syndicate 1221”). Our Lloyd’s Operations primarily underwrite marine and related lines of business along with offshore energy insurance, professional liability insurance and construction coverages for onshore energy business at Lloyd’s through Syndicate 1221. We controlled 100% of Syndicate 1221’s stamp capacity for the 2012 and 2011 underwriting years through our wholly-owned subsidiary, Navigators Corporate Underwriters Ltd., which is referred to as a corporate name in the Lloyd’s market. We have also established underwriting agencies in Antwerp, Belgium, Stockholm, Sweden, and Copenhagen, Denmark, which underwrite risks pursuant to binding authorities with NUAL into Syndicate 1221. We also maintain an underwriting presence in Brazil and China through contractual arrangements with local affiliates of Lloyd’s.

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Catastrophe Risk Management

We have exposure to losses caused by hurricanes and other natural man-made catastrophic events. The frequency and severity of catastrophic events is unpredictable.

Our Insurance Companies and Lloyd’s Operations have exposure to losses caused by natural and man-made catastrophic events. The frequency and severity of catastrophes are unpredictable. The extent of losses from a catastrophe is a function of both the total amount of insured exposure in an area affected by the event and the severity of the event. We continually assess our concentration of underwriting exposures in catastrophe exposed areas globally and manage this exposure through individual risk selection and through the purchase of reinsurance. We also use modeling and concentration management tools that allow us to better monitor and control our accumulations of potential losses from catastrophe events. Despite these efforts, there remains uncertainty about the characteristics, timing and extent of insured losses given the unpredictable nature of catastrophes. The occurrence of one or more catastrophic events could have a material adverse effect on our results of operations, financial condition and/or liquidity.

We have significant natural catastrophe exposures throughout the world. We estimate that our largest exposure to loss from a single natural catastrophe event comes from an earthquake on the west coast of the United States. As of June 30, 2012 we estimate that our probable maximum pre-tax gross and net loss exposure from such an earthquake event would be approximately $181.8 million and $30.1 million, respectively, including the cost of reinsurance reinstatement premiums.

Like all catastrophe exposure estimates, the foregoing estimate of our probable maximum loss is inherently uncertain. This estimate is highly dependent upon numerous assumptions and subjective underwriting judgments. Examples of significant assumptions and judgments related to such an estimate include the intensity, depth and location of the earthquake, the various types of the insured risks exposed to the event at the time the event occurs and the estimated costs or damages incurred for each insured risk. The composition of our portfolio also makes such estimates challenging due to the non-static nature of the exposures covered under our policies in lines of business such as cargo and hull. There can be no assurances that the gross and net loss amounts that we could incur in such an event or in any natural catastrophe event would not be materially higher than the estimates discussed above given the significant uncertainties with respect to such an estimate. Moreover, our portfolio of insured risks changes dynamically over time and there can be no assurance that our probable maximum loss will not change materially over time.

The occurrence of large loss events could reduce the reinsurance coverage that is available to us and could weaken the financial condition of our reinsurers, which could have a material adverse effect on our results of operations. Although the reinsurance agreements make the reinsurers liable to us to the extent the risk is transferred or ceded to the reinsurer, ceded reinsurance arrangements do not eliminate our obligation to pay claims to our policyholders as we are required to pay the losses if a reinsurer fails to meet its obligations under the reinsurance agreement. Accordingly, we bear credit risk with respect to our reinsurers. Specifically, our reinsurers may not pay claims made by us on a timely basis, or they may not pay some or all of these claims. Either of these events would increase our costs and could have a material adverse effect on our business.

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CRITICAL ACCOUNTING POLICIES

The Company’s Annual Report on Form 10-K for the year ended December 31, 2011 discloses our critical accounting policies (refer to Item 7 – Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Policies). Certain of these policies are critical to the portrayal of our financial condition and results since they require management to establish estimates based on complex and subjective judgments, including those related to our estimates for losses and loss adjustment expenses (“LAE”) (including losses that have occurred but were not reported to us by the financial reporting date), reinsurance recoverables, written and unearned premium, the recoverability of deferred tax assets, the impairment of investment securities and accounting for Lloyd’s results. For additional information regarding our critical accounting policies, refer to our Annual Report on Form 10-K for the year ended December 31, 2011.

RECENT ACCOUNTING PRONOUNCEMENTS

Refer to Note 2, Recent Accounting Pronouncements, in the Notes to Interim Consolidated Financial Statements included herein for a discussion about accounting standards recently adopted by the Company, as well as recent accounting developments relating to standards not yet adopted by the Company.

RESULTS OF OPERATIONS

The following is a discussion and analysis of our consolidated and segment results of operations for the three and six months ended June 30, 2012 and 2011. Our financial results are presented on the basis of United States generally accepted accounting principles (“GAAP”). However, in presenting our financial results, we discuss our performance with reference to operating earnings, book value per share, underwriting profit or loss, and the combined ratio, all of which are non-GAAP financial measures of performance and/or underwriting profitability. Operating earnings is calculated as net income less after-tax net realized gains (losses) and net other-than-temporary impairment (“OTTI”) losses recognized in earnings. Book value per share is calculated by dividing stockholders’ equity by the number of outstanding shares at any period end. Underwriting profit or loss is calculated from net earned premiums, less the sum of net losses and LAE, commission expenses, other operating expenses and other income (expense). The combined ratio is derived by dividing the sum of net losses and LAE, commission expenses, other operating expenses and other income (expense) by net earned premiums. A combined ratio of less than 100% indicates an underwriting profit and greater than 100% indicates an underwriting loss. We consider such measures, which may be defined differently by other companies, to be important in the understanding of our overall results of operations by highlighting the underlying profitability of our insurance business.

Summary of Consolidated Results

The following table presents a summary of our consolidated financial results for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended				Six Months Ended
	June 30,				June 30,				Percentage Change
In thousands, except per share amounts	2012		2011		2012		2011		QTD			YTD
Gross written premiums	$	322,987	$	278,714	$	666,136	$	574,997		15.9	%		15.9	%
Net written premiums		190,252		183,363		433,297		376,439		3.8	%		15.1	%
Total revenues		215,902		194,253		412,878		363,476		11.1	%		13.6	%
Total expenses		194,778		179,717		380,569		361,326		8.4	%		5.3	%
Pre-tax income (loss)	$	21,124	$	14,536	$	32,309	$	2,150		45.3	%		NM
Provision (benefit) for income taxes		6,225		5,032		9,506		539		23.7	%		NM
Net income (loss)	$	14,899	$	9,504	$	22,803	$	1,611		56.8	%		NM
Net income (loss) per common share:
Basic	$	1.06	$	0.62	$	1.63	$	0.10
Diluted	$	1.05	$	0.60	$	1.60	$	0.10

NM — Percentage change not meaningful

32

Net income for the three months ended June 30, 2012 was $14.9 million or $1.05 per diluted share compared to $9.5 million or $0.60 per diluted share for the three months ended June 30, 2011. Operating earnings for the three months ended June 30, 2012 were $12.5 million or $0.88 per diluted share compared to $8.0 million or $0.51 per diluted share for the comparable period in 2011. In comparison to net income, operating earnings excludes after-tax net realized gains of $2.7 million and after-tax OTTI losses of $0.3 million for the three months ended June 30, 2012. For the three months ended June 30, 2011 operating earnings excluded after tax net realized gains of $1.9 million and after-tax OTTI losses of $0.4 million. The increase in our operating earnings for the three months ended June 30, 2012 was largely attributable to stronger underwriting results.

Net income for the six months ended June 30, 2012 was $22.8 million or $1.60 per diluted share compared to $1.6 million or $0.10 per diluted share for the six months ended June 30, 2011. Operating earnings for the six months ended June 30, 2012 were $19.3 million or $1.35 per diluted share compared to $1.2 million or $0.08 per diluted share for the comparable period in 2011. In comparison to net income, operating earnings excludes after-tax net realized gains of $3.9 million and after-tax OTTI losses of $0.4 million for the six months ended June 30, 2012. For the six months ended June 30, 2011 operating earnings excluded after-tax net realized gains of $0.9 million and after-tax OTTI losses of $0.5 million. The increase in our operating earnings for the six months ended June 30, 2012 was largely attributable to stronger underwriting results, partially offset by a decrease in net investment income driven by $4.5 million of investment expenses related to the settlement of a dispute with Equitas over foregone interest on amounts that were due on certain reinsurance contracts. The results for the first six months of the year include net losses of $11.3 million related to several large losses from our marine business, including the grounding of the cruise ship Costa Concordia off the coast of Italy.

Our book value per share as of June 30, 2012 was $60.08, increasing from $57.57 as of December 31, 2011. The increase in book value per share primarily resulted from our increased results of operations and improvements in the value of our consolidated investment portfolio. Our consolidated stockholders’ equity increased 4.8% to $841.8 million as of June 30, 2012 compared to $803.4 million as of December 31, 2011.

Cash flow from operations was $15.0 million for the six months ended June 30, 2012 compared to $14.4 million for the comparable period in 2011. The increase in cash flow from operations was due to improved collections on premium receivables and reinsurance recoverables, offset by an increase in paid losses and current income taxes paid.

33

The following table presents our consolidated underwriting results and provides a reconciliation of our underwriting profit or loss to GAAP net income or net loss for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended						Six Months Ended
	June 30,						June 30,						Percentage Change
In thousands	2012			2011			2012			2011			QTD			YTD
Gross written premiums	$	322,987		$	278,714		$	666,136		$	574,997			15.9	%		15.9	%
Net written premiums		190,252			183,363			433,297			376,439			3.8	%		15.1	%
Net earned premiums		196,017			173,777			379,136			326,255			12.8	%		16.2	%
Net losses and loss adjustment expenses		(123,407	)		(113,863	)		(241,392	)		(230,651	)		8.4	%		4.7	%
Commission expenses		(29,503	)		(28,030	)		(58,953	)		(54,230	)		5.3	%		8.7	%
Other operating expenses		(39,819	)		(35,777	)		(76,126	)		(72,352	)		11.3	%		5.2	%
Other income (expense)		387			573			1,298			1,564			-32.5	%		-17.0	%
Underwriting profit (loss)	$	3,675		$	(3,320	)	$	3,963		$	(29,414	)		NM			NM
Net investment income		15,777			17,429			27,035			34,813			-9.5	%		-22.3	%
Net other-than-temporary impairment losses recognized in earnings		(496	)		(532	)		(650	)		(774	)		-6.8	%		-16.0	%
Net realized gains (losses)		4,217			3,006			6,059			1,618			40.3	%		NM
Interest expense		(2,049	)		(2,047	)		(4,098	)		(4,093	)		0.1	%		0.1	%
Income (loss) before income taxes	$	21,124		$	14,536		$	32,309		$	2,150			45.3	%		NM
Income tax expense (benefit)		6,225			5,032			9,506			539			23.7	%		NM
Net income (loss)	$	14,899		$	9,504		$	22,803		$	1,611			56.8	%		NM
Losses and loss adjustment expenses ratio		63.0	%		65.5	%		63.7	%		70.7	%
Commission expense ratio		15.1	%		16.1	%		15.5	%		16.6	%
Other operating expense ratio (1)		20.0	%		20.3	%		19.8	%		21.7	%
Combined ratio		98.1	%		101.9	%		99.0	%		109.0	%

(1) — Includes Other operating expenses & Other income (expense)

NM — Percentage change not meaningful

The combined ratio for the three months ended June 30, 2012 was 98.1% compared to 101.9% for the same period in 2011. Our pre-tax underwriting results increased $7.0 million to a $3.7 million underwriting profit for the three months ended June 30, 2012 compared to an underwriting loss of $3.3 million for the same period in 2011.

Our underwriting results for the current quarter include $3.0 million of reinsurance reinstatement premiums related to several large losses from our marine business, as well as net prior period reserve redundancies of $6.0 million from our Lloyd’s Operations. Our underwriting results for the same period in 2011 included a large loss from a Gulf of Mexico drilling operation resulting in a net loss of $6.9 million, inclusive of $4.0 million in reinsurance reinstatement premiums.

The combined ratio for the six months ended June 30, 2012 was 99.0% compared to 109.0% for the same period in 2011. Our pre-tax underwriting results increased $33.4 million to a $4.0 million underwriting profit for the six months ended June 30, 2012 compared to an underwriting loss of $29.4 million for the same period in 2011.

Our underwriting results for the first six months of 2012 reflect net losses of $11.3 million inclusive of $10.0 million of reinsurance reinstatement premiums, related to several large losses from our marine business, including the grounding of the cruise ship Costa Concordia off the coast of Italy. The results also include net prior period reserve redundancies of $12.2 million primarily driven by our Lloyd’s Operations.

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Our underwriting results for the same period in 2011 included net losses of $30.8 million consisting of $17.6 million of large losses from our energy business, inclusive of $7.9 million of reinsurance reinstatement premiums, $5.2 million in accrued reinstatement premiums reflecting our shift to excess-of-loss reinsurance protection in our Marine business, $5.4 million of prior year development in our Lloyd’s Professional Liability business, and $2.6 million in sliding scale commission adjustments related to large loss activity that reduced our ceding commission benefit on a large quota share treaty.

Revenues

Gross Written Premiums

The following tables set forth our gross written premiums, net written premiums and net earned premiums by segment and line of business for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended June 30,
	2012									2011
In thousands	Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums		Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums
Insurance Companies:
Marine	$	49,896		15	%	$	31,786	$	35,535	$	58,323		21	%	$	41,802	$	41,877
Property Casualty		130,627		41	%		76,842		82,175		100,131		36	%		62,015		55,351
Professional Liability		33,541		10	%		25,437		23,867		28,313		10	%		19,387		17,759
Insurance Companies Total		214,064		66	%		134,065		141,577		186,767		67	%		123,204		114,987
Lloyd’s Operations:
Marine		46,482		15	%		33,025		32,927		39,451		14	%		32,042		37,734
Property Casualty		49,533		15	%		16,172		16,617		42,122		15	%		22,682		16,259
Professional Liability		12,908		4	%		6,990		4,896		10,374		4	%		5,435		4,797
Lloyd’s Operations Total		108,923		34	%		56,187		54,440		91,947		33	%		60,159		58,790
Total	$	322,987		100	%	$	190,252	$	196,017	$	278,714		100	%	$	183,363	$	173,777

	Six Months Ended June 30,
	2012									2011
In thousands	Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums		Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums
Insurance Companies:
Marine	$	111,761		17	%	$	74,651	$	70,810	$	128,671		22	%	$	96,020	$	82,436
Property Casualty		286,546		43	%		191,374		156,543		213,019		37	%		124,922		98,286
Professional Liability		64,095		10	%		49,290		45,772		51,853		9	%		33,002		33,085
Insurance Companies Total		462,402		70	%		315,315		273,125		393,543		68	%		253,944		213,807
Lloyd’s Operations:
Marine		108,812		16	%		81,550		67,536		100,606		18	%		81,713		74,712
Property Casualty		73,274		11	%		25,060		29,774		61,424		11	%		31,068		28,153
Professional Liability		21,648		3	%		11,372		8,701		19,424		3	%		9,714		9,583
Lloyd’s Operations Total		203,734		30	%		117,982		106,011		181,454		32	%		122,495		112,448
Total	$	666,136		100	%	$	433,297	$	379,136	$	574,997		100	%	$	376,439	$	326,255

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Gross written premiums increased $44.3 million, or 15.9%, to $323.0 million for the three months ended June 30, 2012 compared to $278.7 million for the same period in 2011. Gross written premiums increased $91.1 million, or 15.9%, to $666.1 million for the six months ended June 30, 2012 compared to $575.0 million for the same period in 2011. The increases in gross written premiums is primarily attributed to growth within our Property Casualty business, specifically our Nav Re division, which writes Accident & Health (“A&H”), Agriculture, Latin American and Professional Liability reinsurance lines of business, as the division continues to achieve successful growth since its establishment in late 2010. The increase within Property Casualty is also attributable to growth within our Excess Casualty division resulting from strong production attributable to expansion of our underwriting team and dislocation among certain competitors, as well as strong production from our NavTech division.

Average renewal premium rates for our Insurance Companies segment increased for the three months ended June 30, 2012 as compared to the same period in 2011 across all segments. Our Marine business has realized a 3.4% and 8.4% increase in rates for the marine liability and inland marine divisions, respectively. Within our Property Casualty business we have realized a 2.3% increase in rates for the NavTech division and a 0.8% increase for the Excess Casualty division offset by a 3.1% decrease in the Primary Casualty division. Our Professional Liability business has experienced an overall increase in renewal rates of 5.5%, consisting of 7.0% and 3.1% for the Errors & Omissions (“E&O”) and the Management Liability divisions, respectively.

For the three months ended June 30, 2012 average renewal premium rates for our Lloyd’s Operations segment include increases for Lloyd’s Marine and Lloyd’s NavTech of approximately 7.1% and 5.1%, respectively. Our Lloyd’s Professional Liability business experienced an average decrease of 0.9%.

Average renewal premium rates for our Insurance Companies segment also increased for the six months ended June 30, 2012 as compared to the same period in 2011 across all segments. Our Marine business has realized a 4.7% and 4.3% increase in rates for the marine liability and inland marine divisions, respectively. Within our Property Casualty business we have realized a 3.3% increase in rates for the NavTech division and a 1.0% increase for the Excess Casualty division offset by a 2.6% decrease in the Primary Casualty division. Our Professional Liability business has experienced an overall increase in renewal rates of 4.0%, consisting of 5.1% and 2.1% for the E&O and the Management Liability divisions, respectively.

For the six months ended June 30, 2012 average renewal premium rates for our Lloyd’s segment include increases for Lloyd’s Marine and Lloyd’s NavTech of approximately 4.5% and 5.4%, respectively. Our Lloyd’s Professional Liability business experienced an average decrease of 1.5%.

The average premium rate increases or decreases as noted above for the Marine, Property Casualty and Professional Liability businesses are calculated primarily by comparing premium amounts on policies that have renewed. The premiums are judgmentally adjusted for exposure factors when deemed significant and sometimes represent an aggregation of several lines of business. The rate change calculations provide an indicated pricing trend and are not meant to be a precise analysis of the numerous factors that affect premium rates or the adequacy of such rates to cover all underwriting costs and generate an underwriting profit. The calculation can also be affected quarter by quarter depending on the particular policies and the number of policies that renew during that period. Due to market conditions, these rate changes may or may not apply to new business that generally would be more competitively priced compared to renewal business. The calculation does not reflect the rate on business that we are unwilling or unable to renew due to loss experience or competition.

Ceded Written Premiums

In the ordinary course of business, we reinsure certain insurance risks with unaffiliated insurance companies for the purpose of limiting our maximum loss exposure, protecting against catastrophic losses, and maintaining desired ratios of net premiums written to statutory surplus. The relationship of ceded to gross written premium varies based upon the types of business written and whether the business is written by the Insurance Companies or the Lloyd’s Operations.

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Our reinsurance program includes contracts for proportional reinsurance, per risk and whole account excess-of-loss reinsurance for both property and casualty risks and property catastrophe excess-of-loss reinsurance. In recent years we have increased our utilization of excess-of-loss reinsurance for marine, property and casualty risks. Our excess-of-loss reinsurance contracts generally provide for a specific amount of coverage in excess of an attachment point and sometimes provides for reinstatement of the coverage to the extent the limit has been exhausted for payment of additional premium (referred to as reinsurance reinstatement premiums). The number of reinsurance reinstatements available varies by contract.

We record an estimate of the expected reinsurance reinstatement premiums for losses ceded to excess-of-loss agreements where this feature applies.

We incurred $5.0 million and $16.4 million in reinsurance reinstatement premiums for the three and six months ended June 30, 2012, respectively, primarily related to several large losses on our marine business, including the grounding of the cruise ship Costa Concordia off the coast of Italy. The net amount recorded for the three and six months ended June 30, 2011 was $1.5 million and $13.0 million, respectively, primarily related to the large energy losses and the establishment of our reinstatement premium accrual reflective of our shift to excess-of-loss protection in our Marine business.

The following table sets forth our ceded written premiums by segment and major line of business for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended June 30,										Six Months Ended June 30,
	2012					2011					2012					2011
In thousands	Ceded Written Premiums		% of Gross Written Premiums			Ceded Written Premiums		% of Gross Written Premiums			Ceded Written Premiums		% of Gross Written Premiums			Ceded Written Premiums		% of Gross Written Premiums
Insurance Companies:
Marine	$	18,110		36	%	$	16,521		28	%	$	37,110		33	%	$	32,651		25	%
Property Casualty		53,785		41	%		38,116		38	%		95,172		33	%		88,097		41	%
Professional Liability		8,104		24	%		8,926		32	%		14,805		23	%		18,851		36	%
Total Insurance Companies		79,999		37	%		63,563		34	%		147,087		32	%		139,599		35	%
Lloyd’s Operations:
Marine		13,457		29	%		7,409		19	%		27,262		25	%		18,893		19	%
Property Casualty		33,361		67	%		19,440		46	%		48,214		66	%		30,356		49	%
Professional Liability		5,918		46	%		4,939		48	%		10,276		47	%		9,710		50	%
Total Lloyd’s		52,736		48	%		31,788		35	%		85,752		42	%		58,959		32	%
Total	$	132,735		41	%	$	95,351		34	%	$	232,839		35	%	$	198,558		35	%

The increase in percentage of total ceded written premiums to total gross written premiums for the three months ended June 30, 2012 compared to the same period of 2011 was primarily due to a lower retention ratio on our NavTech business as a result of a new quota share program for the offshore energy book, partially offset by a change in the mix of business resulting in the growth of our assumed reinsurance business written by Nav Re, and to a lesser extent, the expansion of products offered by our Professional Liability division where our retention ratios are higher.

Net Written Premiums

Net written premiums increased 3.8% and 15.1% for the three and six months ended June 30, 2012 compared to the same periods in 2011. The increases are due to the impact of higher gross written premiums for the three and six months ended June 30, 2012, and to a lesser extent higher premium cessions as a result of mix changes in business, as discussed above.

Net Earned Premiums

Net earned premiums increased 12.8% and 16.2% for the three and six months ended June 30, 2012 compared to the same periods in 2011 as result of a change in the mix of business driven by the growth of our Nav Re division, specifically the A&H lines, which are recognized in earnings over a longer exposure period than our other lines of business.

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Net Investment Income

Our net investment income was derived from the following sources:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities	$	15,006		$	16,844		$	30,416		$	34,034
Equity securities		994			859			1,941			1,642
Short-term investments		701			274			1,014			542
Total investment income		16,701			17,977			33,371			36,218
Investment expenses		(924	)		(548	)		(6,336	)		(1,405	)
Net investment income	$	15,777		$	17,429		$	27,035		$	34,813

The total investment income before investment expenses decreased 7.1% and 7.9% for the three and six months ended June 30, 2012 compared to the same periods in 2011, primarily due to lower investment yields. The annualized pre-tax investment yield, excluding net realized gains and losses and net OTTI losses recognized in earnings, was 2.8% and 2.4% for the three and six months ended June 30, 2012 compared to 3.3% for the same periods during 2011. The portfolio duration was 3.9 years for the six months ended June 30, 2012 compared to 3.6 years for the comparable period during 2011.

The 2.4% annualized pre-tax yield for the six months ended June 30, 2012 includes investment expenses of $4.5 million for interest expense related to the settlement of a dispute with Equitas over foregone interest on amounts that were due on certain reinsurance contracts. In the dispute Equitas alleged that we failed to make timely payments to them under certain reinsurance agreements in connection with subrogation recoveries received by us with respect to several catastrophe losses that occurred in the late 1980’s and early 1990’s. Excluding the impact of the aforementioned interest expense, the annualized pre-tax yield for the six months ended June 30, 2012 would have been 2.8%, reflective of the general decline in market yields.

Net Other-Than-Temporary Impairment Losses Recognized In Earnings

Our net OTTI losses recognized in earnings for the periods indicated were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2012		2011		2012		2011
Fixed maturities	$	—	$	215	$	11	$	226
Equity securities		496		317		639		548
OTTI recognized in earnings	$	496	$	532	$	650	$	774

The significant inputs used to measure the amount of credit loss recognized in earnings were actual delinquency rates, default probability assumptions, severity assumptions and prepayment assumptions. Projected losses are a function of both loss severity and probability of default. Default probability and severity assumptions differ based on property type, vintage and the stress of the collateral. We do not intend to sell any of these securities and it is more likely than not that we will not be required to sell these securities before the recovery of the amortized cost basis.

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Net Realized Gains and Losses

Realized gains and losses, excluding net OTTI losses recognized in earnings, for the periods indicated were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities:
Gains	$	4,717		$	4,443		$	7,858		$	7,312
Losses		(231	)		(2,277	)		(1,530	)		(6,534	)
Fixed maturities, net	$	4,486		$	2,166		$	6,328		$	778
Equity securities:
Gains	$	204		$	840		$	204		$	840
Losses		(473	)		—			(473	)		—
Equity securities, net	$	(269	)	$	840		$	(269	)	$	840
Net realized gains (losses)	$	4,217		$	3,006		$	6,059		$	1,618

Net realized gains and losses are generated as part of the normal ongoing management of our investment portfolio. Net realized gains of $4.2 million and $6.1 million for the three and six months ended June 30, 2012 are due to the sale of corporate bonds and Treasury bonds. Net realized gains of $3.0 million and $1.6 million for the three and six months ended June 30, 2011 are due to the sale of corporate and municipal bonds.

Other Income/Expense

Other income (expense) for the three and six months ended June 30, 2012 and 2011 consists of foreign exchange gains and losses from our Lloyd’s Operations, commission income and inspection fees related to our specialty insurance business.

Expenses

Net Losses and Loss Adjustment Expenses

The ratio of net losses and LAE to net earned premiums (“loss ratios”) for the three and six months ended June 30, 2012 and 2011 is presented in the following table:

	Three Months Ended June 30,						Six Months Ended June 30,
Net Loss and LAE Ratio	2012			2011			2012			2011
Net Loss and LAE Payments		61.7	%		59.8	%		63.1	%		59.0	%
Current year reserves		4.0	%		5.2	%		3.8	%		10.4	%
Subtotal—current year loss ratio		65.7	%		65.0	%		66.9	%		69.4	%
Prior year deficiencies (redundancies)		-2.7	%		0.5	%		-3.2	%		1.3	%
Net loss and LAE ratio		63.0	%		65.5	%		63.7	%		70.7	%

The net loss and LAE ratio for the three months ended June 30, 2012 decreased 2.5 percentage points to 63.0% from 65.5% for the three months ended June 30, 2011. The improvement in the loss ratio reflects $5.4 million of net prior year reserve redundancies driven mostly by our Lloyd’s Operations, partially offset by several large losses from our Marine business.

The net loss and LAE ratio for the six months ended June 30, 2012 decreased 7.0 percentage points to 63.7% from 70.7% for the six months ended June 30, 2011. The improvement in the loss ratio reflects improved loss experience due to the lack of large energy losses in our NavTech business and $12.2 million of net prior year reserve redundancies driven mostly by our Lloyd’s Operations. The improvements in the loss ratio were partially offset by several large losses from our Marine business, including the grounding of the cruise ship off Costa Concordia off the coast of Italy.

39

The segment and line of business breakdown of the net loss and LAE ratios for the three and six months ended June 30, 2012 and 2011 are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
Net Loss and LAE Ratio	2012			2011			2012			2011
Insurance Companies:
Marine		85.2	%		64.0	%		82.0	%		66.5	%
Property Casualty		60.5	%		69.4	%		62.5	%		75.7	%
Professional Liability		83.8	%		68.1	%		77.0	%		69.4	%
Insurance Companies		70.6	%		67.3	%		70.0	%		71.2	%
Lloyd’s Operations:
Marine		38.7	%		67.7	%		50.8	%		67.5	%
Property Casualty		46.5	%		37.5	%		39.5	%		54.6	%
Professional Liability		60.3	%		102.2	%		47.7	%		132.8	%
Lloyd’s		43.0	%		62.1	%		47.4	%		69.8	%
Net loss and LAE ratio		63.0	%		65.5	%		63.7	%		70.7	%

Prior Year Reserve Deficiencies/Redundancies

The relevant factors that may have a significant impact on the establishment and adjustment of losses and LAE reserves can vary by line of business and from period to period. As part of our regular review of prior period reserves, management, in consultation with our actuaries, may determine, based on their judgment that certain assumptions made in the reserving process in prior year periods may need to be revised to reflect various factors, likely including the availability of additional information. Based on their reserve analyses, management may make corresponding reserve adjustments.

The segment and line of business breakdowns of prior period net reserve deficiencies (redundancies) for the three months ended June 30, 2012 and 2011 are as follows:

	Three Months Ended June 30,
In thousands	2012			2011
Insurance Companies:
Marine	$	(94	)	$	(171	)
Property Casualty		(2,951	)		231
Professional Liability		3,671			(197	)
Insurance Companies	$	626		$	(137	)
Lloyd’s Operations:
Marine	$	(4,026	)	$	(1,324	)
Property Casualty		(1,272	)		1,110
Professional Liability		(700	)		1,166
Lloyd’s	$	(5,998	)	$	952
Total deficiencies (redundancies)	$	(5,372	)	$	815

The following is a discussion of relevant factors related to the $5.4 million prior period net reserve redundancies recorded for the three months ended June 30, 2012:

The Insurance Companies recorded $0.6 million of net prior period reserve deficiency. The net reserve deficiency includes adverse development from our Professional Liability business related to our lawyers and accountants products, partially offset by favorable development from our Property Casualty business related to our Primary Casualty and NavTech divisions.

Our Lloyd’s Operations recorded $6.0 million of net prior period reserve redundancies driven by the Marine and Property Casualty businesses.

40

The following is a discussion of relevant factors related to the $0.8 million prior period net reserve deficiency recorded for the three months ended June 30, 2011:

For the three months ended June 30, 2011, the Insurance Companies recorded $0.1 million of prior period net reserve redundancies. Within our Property Casualty business we experienced adverse development in our run-off liquor liability business within our Primary Casualty division due to case reserve development, partially offset by favorable development in our Excess Casualty division due to loss emergence that was lower than anticipated.

For the three months ended June 30, 2011, the Lloyd’s Operations recorded $0.9 million of prior period net reserve deficiencies resulting from adverse development in our Professional Liability business driven by adverse claims movements in the E&O division.

The Segment and line of business breakdowns of prior period net reserve deficiencies (redundancies) for the six months ended June 30, 2012 and 2011 are as follows:

	Six Months Ended June 30,
In thousands	2012			2011
Insurance Companies:
Marine	$	(588	)	$	577
Property Casualty		(6,280	)		984
Professional Liability		4,778			(476	)
Insurance Companies	$	(2,090	)	$	1,085
Lloyd’s Operations:
Marine	$	(3,970	)	$	(2,213	)
Property Casualty		(4,010	)		(31	)
Professional Liability		(2,168	)		5,407
Lloyd’s	$	(10,148	)	$	3,163
Total deficiencies (redundancies)	$	(12,238	)	$	4,248

The following is a discussion of relevant factors related to the $12.2 million prior period net reserve redundancies recorded for the six months ended June 30, 2012:

The Insurance Companies recorded $2.1 million of net prior period reserve redundancies driven by net favorable development from our Property Casualty business related to our Primary Casualty and NavTech divisions, partially offset by adverse development from our Professional Liability business across multiple products within our Management Liability and E&O divisions.

Our Lloyd’s Operations recorded $10.1 million of net prior period reserve redundancies across all businesses and divisions.

The following is a discussion of relevant factors related to the $4.2 million prior period net reserve deficiency recorded for the six months ended June 30, 2011:

For the six months ended June 30, 2011, the Insurance Companies recorded $1.1 million of prior period net reserve deficiencies which was driven by adverse development in the Marine and Property Casualty divisions. Within our Marine division we experienced adverse development related to a series of reported losses that exceeded our expectations within our inland marine business, partially offset by favorable development on marine liability and craft business due to favorable loss emergence relative to expectations. Within the Property Casualty division we experienced adverse development on personal umbrella lines and our liquor liability lines, both of which are in run-off.

For the six months ended June 30, 2011, the Lloyd’s Operations recorded $3.1 million of prior period net reserve deficiencies resulting from adverse development in Professional Liability driven by adverse claims movements for prior underwriting years in the E&O division.

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Commission Expenses

Commission expenses paid to brokers and agents are generally based on a percentage of gross written premiums and are partially offset by ceding commissions we may receive on ceded written premiums. Commissions are generally deferred and recorded as deferred policy acquisition costs to the extent they relate to unearned premium. The percentage of commission expenses to net earned premiums (“commission expense ratio”) for the three and six months ended June 30, 2012 was 15.1% and 15.5%, respectively, compared to 16.1% and 16.6% for the comparable periods during 2011. The decrease in the commission expense ratio for the three and six months ended June 30, 2012 when compared to the same periods in 2011 can be attributed to a change in the mix of business.

Other Operating Expenses

Other operating expenses increased 11.3% and 5.2% for the three and six months ended June 30, 2012 compared to the same periods in 2011 primarily due to increases in expected payout percentages of stock-based compensation driven by projected growth in book value per share. As a percentage of net earned premiums, operating expenses remained flat for the three months ended June 30, 2012 and 2011 and slightly decreased 1.9 percentage points to 19.8% for the six months ended June 30, 2012 as compared to the same period in 2011.

Interest Expense

Interest expense relates to our Senior Notes due May 1, 2016. Interest on these Senior Notes is due each May 1 and November 1 and the effective interest rate, based on the proceeds net of discount and all issuance costs, is approximately 7.17%. Interest expense for the three and six months ended June 30, 2012 was $2.0 million and $4.1 million, respectively, and remained flat with the same periods in 2011.

Income Taxes

We recorded income tax expense of $6.2 million and $9.5 million for the three and six months ended June 30, 2012, respectively, compared to $5.0 million and $0.5 million for the comparable periods in 2011, resulting in effective tax rates of 29.5% and 29.4%, respectively. The effective tax rate on net investment income was 28.2% and 26.9% for the three and six months ended June 30, 2012, respectively, compared to 28.7% and 28.6% for the same periods during 2011.

As of June 30, 2012, the net deferred Federal, foreign, state and local tax liabilities were $3.1 million, compared to net deferred tax liabilities of $6.3 million as of December 31, 2011, with the change primarily due to fluctuations in the value of our investment portfolio.

We had net state and local deferred tax assets amounting to potential future tax benefits of $0.6 million and $0.2 million as of June 30, 2012 and December 31, 2011, respectively. Included in the deferred tax assets are state and local net operating loss carry-forwards of $0.2 million as of both June 30, 2012 and December 31, 2011. A valuation allowance was established for the full amount of these potential future tax benefits due to uncertainty associated with their realization. Our state and local tax carry-forwards as of June 30, 2012 expire from 2024 to 2031.

Segment Information

We classify our business into two underwriting segments consisting of the Insurance Companies and the Lloyd’s Operations, which are separately managed, and a Corporate segment. Segment data for each of the two underwriting segments include allocations of the operating expenses of the wholly-owned underwriting management companies and The Navigators Group, Inc.’s (the “Parent Company’s”) operating expenses and related income tax amounts. The Corporate segment consists of the Parent Company’s investment income, interest expense and the related tax effect.

We evaluate the performance of each segment based on its underwriting and GAAP results. The underwriting results of the Insurance Companies and the Lloyd’s Operations are measured by taking into account net earned premium, net loss and LAE, commission expenses, other operating expenses and other income (expense). Each segment also maintains its own investments, on which it earns income and realizes capital gains or losses. Our underwriting performance is evaluated separately from the performance of our investment portfolios.

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Following are the financial results of our two underwriting segments.

Insurance Companies

The Insurance Companies consist of Navigators Insurance Company, including its U.K. Branch, and its wholly-owned subsidiary, Navigators Specialty. They are primarily engaged in underwriting marine insurance and related lines of business, specialty lines of business, including contractors general liability insurance, commercial umbrella and primary and excess casualty businesses, specialty reinsurance, and professional liability insurance. Navigators Specialty underwrites specialty and professional liability insurance on an excess and surplus lines basis. Navigators Specialty is 100% reinsured by Navigators Insurance Company.

The following table sets forth the results of operations for the Insurance Companies for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended						Six Months Ended
	June 30,						June 30,						Percentage Change
In thousands	2012			2011			2012			2011			QTD			YTD
Gross written premiums	$	214,064		$	186,767		$	462,402		$	393,543			14.6	%		17.5	%
Net written premiums		134,065			123,204			315,315			253,944			8.8	%		24.2	%
Net earned premiums		141,577			114,987			273,125			213,807			23.1	%		27.7	%
Net losses and loss adjustment expenses		(100,003	)		(77,330	)		(191,180	)		(152,127	)		29.3	%		25.7	%
Commission expenses		(21,117	)		(16,402	)		(40,418	)		(28,742	)		28.7	%		40.6	%
Other operating expenses		(28,914	)		(26,516	)		(54,259	)		(53,315	)		9.0	%		1.8	%
Other income (expense)		879			626			2,521			2,317			40.4	%		8.8	%
Underwriting profit (loss)	$	(7,578	)	$	(4,635	)	$	(10,211	)	$	(18,060	)		63.5	%		-43.5	%
Net investment income		13,286			14,989			22,221			29,972			-11.4	%		-25.9	%
Net realized gains (losses)		2,325			3,100			4,200			2,855			-25.0	%		47.1	%
Income (loss) before income taxes	$	8,033		$	13,454		$	16,210		$	14,767			-40.3	%		9.8	%
Income tax expense (benefit)		2,101			4,617			3,980			4,845			-54.5	%		-17.9	%
Net income (loss)	$	5,932		$	8,837		$	12,230		$	9,922			-32.9	%		23.3	%
Losses and loss adjustment expenses ratio		70.6	%		67.3	%		70.0	%		71.2	%
Commission expense ratio		14.9	%		14.3	%		14.8	%		13.4	%
Other operating expense ratio (1)		19.9	%		22.4	%		18.9	%		23.8	%
Combined ratio		105.4	%		104.0	%		103.7	%		108.4	%

(1) — Includes Other operating expenses & Other income (expense)

NM — Percentage change not meaningful

Our Insurance Companies reported net income of $5.9 million for the three months ended June 30, 2012 compared to $8.8 million for the same period in 2011. The decrease in net income for the three months ended June 30, 2012 as compared to the same period in 2011 was largely driven by unfavorable underwriting results for the quarter and a decrease in net investment income due to lower investment yields.

Our Insurance Companies combined ratio for the three months ended June 30, 2012 was 105.4% compared to 104.0% for the same period in 2011. Our Insurance Companies pre-tax underwriting results decreased by $3.0 million to a $7.6 million pre-tax underwriting loss for the three months ended June 30, 2012 compared to an underwriting loss of $4.6 million for the same period in 2011.

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Our Insurance Companies underwriting results for the current quarter includes $3.9 million of reinsurance reinstatement premiums related to several large losses from our Marine business. Our underwriting results for the same period in 2011 included a large loss from a Gulf of Mexico drilling operation resulting in a loss of $4.7 million, inclusive of $2.8 million in reinsurance reinstatement premiums.

Our Insurance Companies reported net income of $12.2 million for the six months ended June 30, 2012 compared to $9.9 million for the same period in 2011. The increase in net income for the six months ended June 30, 2012 as compared to the same period in 2011 was largely attributable to stronger underwriting results, partially offset by a reduction in net investment income driven by $4.5 million of investment expenses related to the settlement of a dispute with Equitas over foregone interest on amounts that were due on certain reinsurance contracts.

Our Insurance Companies combined ratio for the six months ended June 30, 2012 was 103.7% compared to 108.4% for the same period in 2011. Our Insurance Companies pre-tax underwriting results increased by $7.9 million to a $10.2 million pre-tax underwriting loss for the six months ended June 30, 2012 compared to an underwriting loss of $18.1 million for the same period in 2011.

Our Insurance Companies underwriting results for the first six months of the year reflect net losses of $9.6 million related to several large losses from our marine business, including the grounding of the cruise ship Costa Concordia off the coast of Italy.

Our underwriting results for the same period in 2011 included net losses of $13.7 million consisting of $10.8 million of large losses from our energy business, inclusive of $5.5 million of reinsurance reinstatement premiums, and $2.9 million in accrued reinstatement premiums reflecting our shift to excess-of-loss reinsurance protection in our Marine business.

Insurance Companies’ Gross Written Premiums

Marine Premiums. The gross written premiums for our Marine business for the three and six months ended June 30, 2012 and 2011 consisted of the following:

	Three Months Ended				Six Months Ended
	June 30,				June 30,				Percentage Change
In thousands	2012		2011		2012		2011		QTD			YTD
Marine liability	$	16,562	$	20,039	$	34,805	$	43,456		-17.4	%		-19.9	%
Inland marine		9,404		7,705		21,242		18,356		22.0	%		15.7	%
Craft/fishing vessel		6,000		5,781		14,244		12,361		3.8	%		15.2	%
Cargo		4,988		5,874		13,446		12,385		-15.1	%		8.6	%
P&I		3,838		3,500		10,454		12,363		9.7	%		-15.4	%
Bluewater hull		4,701		5,634		8,260		10,192		-16.6	%		-19.0	%
Transport		917		5,563		1,331		9,839		-83.5	%		-86.5	%
Other		3,486		4,227		7,979		9,719		-17.5	%		-17.9	%
Total Marine	$	49,896	$	58,323	$	111,761	$	128,671		-14.4	%		-13.1	%

The Insurance Companies Marine gross written premiums for the three and six months ended June 30, 2012 decreased by 14.4% and 13.1%, respectively, compared to the same periods during 2011 primarily due to the Transport and Marine liability products previously written by our U.K. Branch, now are being written through our Lloyd’s Operations, effective this year. The aforementioned decreases were slightly offset by growth in Inland marine as a result of new business and an increase in renewal rates. Inland marine related renewal rates increased 8.4% and 4.3% for the three and six months ended June 30, 2012.

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Property Casualty Premiums. The gross written premiums for our Property Casualty business for the three and six months ended June 30, 2012 and 2011 consisted of the following:

	Three Months Ended				Six Months Ended
	June 30,				June 30,				Percentage Change
In thousands	2012		2011		2012		2011		QTD			YTD
Nav Re	$	20,375	$	10,457	$	93,796	$	48,575		94.8	%		93.1	%
Excess casualty		51,425		35,633		89,079		61,893		44.3	%		43.9	%
Primary casualty:
Construction liability		17,002		21,205		30,966		41,203		-19.8	%		-24.8	%
Other primary casualty		9,549		5,716		19,510		10,548		67.0	%		85.0	%
Environmental		6,310		6,782		11,520		10,626		-7.0	%		8.4	%
Total primary casualty		32,861		33,703		61,996		62,377		-2.5	%		-0.6	%
Offshore energy		20,160		13,668		33,388		25,630		47.5	%		30.3	%
Other		5,806		6,670		8,287		14,544		-13.0	%		-43.0	%
Total Property Casualty	$	130,627	$	100,131	$	286,546	$	213,019		30.5	%		34.5	%

The Insurance Companies Property Casualty gross written premiums for the three and six months ended June 30, 2012 increased by 30.5% and 34.5%, respectively, compared to the same periods during 2011. The increases were primarily driven by our Nav Re division as the division continues to achieve successful growth since its establishment in late 2010. Additionally, we saw growth in our Excess Casualty division resulting from strong production attributable to the expansion of our underwriting team and dislocation among certain competitors as well as strong production from our NavTech division. Contributing to the increase in our NavTech division is a 2.3% and 3.3% increase in average renewal rates for the three and six months ended June 30, 2012.

Professional Liability Premiums. The gross written premiums for our Professional Liability business for the three and six months ended June 30, 2012 and 2011 consisted of the following:

	Three Months Ended				Six Months Ended
	June 30,				June 30,					Percentage Change
In thousands	2012		2011		2012			2011		QTD			YTD
E&O	$	22,229	$	15,756	$	44,162		$	29,573		41.1	%		49.3	%
D&O (public and private)		11,312		12,512		19,934			21,425		-9.6	%		-7.0	%
Other		—		45		(1	)		855		NM			NM
Total Professional Liability	$	33,541	$	28,313	$	64,095		$	51,853		18.5	%		23.6	%

NM — Percentage change not meaningful

The Insurance Companies Professional Liability gross written premiums for the three and six months ended June 30, 2012 increased by 18.5% and 23.6%, respectively, compared to the same periods during 2011. The increases are related to our E&O division and they are driven by our real estate program which was established in the third quarter of 2011 and wrote $5.8 million and $12.4 million in gross written premium for the three and six months ended June 30, 2012. Additionally, the increase in E&O is also attributed to an overall 7.0% and 5.1% increase in average renewal rates for the three and six months ended June 30, 2012.

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Lloyd’s Operations

The Lloyd’s Operations primarily underwrite marine and related lines of business along with professional liability insurance, and construction coverage for onshore energy business at Lloyd’s through Syndicate 1221. Our Lloyd’s Operations includes NUAL, a Lloyd’s underwriting agency that manages Syndicate 1221.

The following table sets forth the results of operations of the Lloyd’s Operations for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended						Six Months Ended
	June 30,						June 30,						Percentage Change
In thousands	2012			2011			2012			2011			QTD			YTD
Gross written premiums	$	108,923		$	91,947		$	203,734		$	181,454			18.5	%		12.3	%
Net written premiums		56,187			60,159			117,982			122,495			-6.6	%		-3.7	%
Net earned premiums		54,440			58,790			106,011			112,448			-7.4	%		-5.7	%
Net losses and loss adjustment expenses		(23,404	)		(36,533	)		(50,212	)		(78,524	)		-35.9	%		-36.1	%
Commission expenses		(8,938	)		(12,042	)		(19,824	)		(26,449	)		-25.8	%		-25.0	%
Other operating expenses		(10,905	)		(9,261	)		(21,867	)		(19,037	)		17.8	%		14.9	%
Other income (expense)		60			361			66			208			-83.3	%		-68.2	%
Underwriting profit (loss)	$	11,253		$	1,315		$	14,174		$	(11,354	)		NM			NM
Net investment income		2,454			2,320			4,737			4,575			5.8	%		3.5	%
Net realized gains (losses)		1,396			(798	)		1,209			(2,183	)		NM			NM
Income (loss) before income taxes	$	15,103		$	2,837		$	20,120		$	(8,962	)		NM			NM
Income tax expense (benefit)		5,207			1,029			6,933			(3,027	)		NM			NM
Net income (loss)	$	9,896		$	1,808		$	13,187		$	(5,935	)		NM			NM
Losses and loss adjustment expenses ratio		43.0	%		62.1	%		47.4	%		69.8	%
Commission expense ratio		16.4	%		20.5	%		18.7	%		23.5	%
Other operating expense ratio (1)		19.9	%		15.2	%		20.5	%		16.8	%
Combined ratio		79.3	%		97.8	%		86.6	%		110.1	%

(1) — Includes Other operating expenses & Other income (expense)

NM — Percentage change not meaningful

Our Lloyd’s Operations reported net income of $9.9 million for the three months ended June 30, 2012 compared to $1.8 million for the same period in 2011. The increase in net income was largely attributable to stronger underwriting results.

Our Lloyd’s Operations combined ratio for the three months ended June 30, 2012 was 79.3% compared to 97.8% for the same period in 2011. Our Lloyd’s Operations pre-tax underwriting results increased by $10.0 million to an $11.3 million pre-tax underwriting profit for the three months ended June 30, 2012 compared to underwriting profit of $1.3 million for the same period in 2011. The increase in pre-tax underwriting results is primarily related to net prior period reserve redundancies from the Marine business.

Our Lloyd’s Operations reported net income of $13.2 million for the six months ended June 30, 2012 compared to a net loss of $5.9 million for the same period in 2011. The increase in net income was largely attributable to stronger underwriting results.

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Our Lloyd’s Operations combined ratio for the six months ended June 30, 2012 was 86.6% compared to 110.1% for the same period in 2011. Our Lloyd’s Operations’ pre-tax underwriting results increased by $25.6 million to a $14.2 million pre-tax underwriting profit for the six months ended June 30, 2012 compared to underwriting loss of $11.4 million for the same period in 2011. The increase in pre-tax underwriting results is primarily related to net prior period reserve redundancies across all businesses.

Lloyd’s Operations’ Gross Written Premiums

We have controlled 100% of Syndicate 1221’s stamp capacity since 2006. Stamp capacity is a measure of the amount of premium a Lloyd’s syndicate is authorized to write based on a business plan approved by the Council of Lloyd’s. Syndicate 1221’s stamp capacity is £184 million ($289 million) in 2012 compared to £175 million ($280 million) in 2011.

Marine Premiums. The gross written premiums for our Marine business for the three and six months ended June 30, 2012 and 2011 consisted of the following:

	Three Months Ended					Six Months Ended
	June 30,					June 30,				Percentage Change
In thousands	2012			2011		2012		2011		QTD			YTD
Marine and energy liability	$	21,747		$	14,057	$	50,681	$	39,920		54.7	%		27.0	%
Cargo and specie		17,005			16,074		36,979		36,083		5.8	%		2.5	%
Assumed reinsurance		4,066			4,339		11,139		12,114		-6.3	%		-8.0	%
War		2,687			2,198		5,973		6,375		22.2	%		-6.3	%
Hull		1,532			2,783		4,040		6,114		-44.9	%		-33.9	%
Other		(555	)		—		—		—		NM			NM
Total Marine	$	46,482		$	39,451	$	108,812	$	100,606		17.8	%		8.2	%

NM —  Percentage change not meaningful

The Lloyd’s Operations Marine gross written premiums for the three and six months ended June 30, 2012 increased by 17.8% and 8.2%, respectively, compared to the same periods during 2011. The increase in Lloyd’s Marine and energy liability is primarily related to new business, part of which is due to the transfer to Syndicate 1221 of the Marine and Transport businesses that was previously written by the U.K. Branch, and an increase in average renewal rates.

Property Casualty Premiums. The gross written premiums for our Property Casualty business for the three and six months ended June 30, 2012 and 2011 consisted of the following:

	Three Months Ended				Six Months Ended
	June 30,				June 30,				Percentage Change
In thousands	2012		2011		2012		2011		QTD			YTD
Offshore energy	$	20,411	$	17,300	$	31,731	$	27,585		18.0	%		15.0	%
Engineering and construction		12,402		9,290		20,598		13,746		33.5	%		49.8	%
Onshore energy		14,694		14,280		18,920		18,647		2.9	%		1.5	%
Other		2,026		1,252		2,025		1,446		61.8	%		40.0	%
Total Property Casualty	$	49,533	$	42,122	$	73,274	$	61,424		17.6	%		19.3	%

The Lloyd’s Operations Property Casualty gross written premiums for the three and six months ended June 30, 2012 increased by 17.6% and 19.3%, respectively, compared to the same periods in 2011. The increases are primarily due to growth in Engineering and construction as a result of rate increases prompted by a contraction in the market as well as a slight increase in Offshore energy resulting from an average increase in renewal rates of 5.1% and 5.4% for the three and six months ended June 30, 2012, respectively.

47

Professional Liability Premiums. The gross written premiums for our Professional Liability business for the three and six months ended June 30, 2012 and 2011 consisted of the following:

	Three Months Ended				Six Months Ended
	June 30,				June 30,				Percentage Change
In thousands	2012		2011		2012		2011		QTD			YTD
D&O (public and private)	$	9,309	$	7,944	$	15,739	$	14,253		17.2	%		10.4	%
E&O		3,599		2,430		5,909		5,171		48.1	%		14.3	%
Total Professional Liability	$	12,908	$	10,374	$	21,648	$	19,424		24.4	%		11.4	%

The Lloyd’s Operations Professional Liability gross written premiums for the three and six months ended June 30, 2012 increased by 24.4% and 11.4%, respectively, compared to the same periods in 2011 primarily as a result of new business in both lines.

Capital Resources

We monitor our capital adequacy to support our business on a regular basis. The future capital requirements of our business will depend on many factors, including our ability to write new business successfully and to establish premium rates and reserves at levels sufficient to cover losses. Our ability to underwrite is largely dependent upon the quality of our claims paying and financial strength ratings as evaluated by independent rating agencies. In particular, we require (1) sufficient capital to maintain our financial strength ratings, as issued by various ratings agencies, at a level considered necessary by management to enable our Insurance Companies to compete, (2) sufficient capital to enable our Insurance Companies to meet the capital adequacy tests performed by statutory agencies in the United States and the United Kingdom and (3) letters of credit and other forms of collateral that are necessary to support the business plan of our Lloyd’s Operations.

Our capital resources consist of funds deployed or available to be deployed to support our business operations. As of June 30, 2012 and December 31, 2011, our capital resources were as follows:

	June 30,			December 31,
In thousands	2012			2011
Senior Notes	$	114,348		$	114,276
Stockholders’ equity		841,808			803,435
Total capitalization	$	956,156		$	917,711
Ratio of debt to total capitalization		12.0	%		12.5	%

As part of our capital management program, we may seek to raise additional capital or may seek to return capital to our stockholders through share repurchases, cash dividends or other methods (or a combination of such methods). Any such determination will be at the discretion of the Parent Company’s Board of Directors and will be dependent upon our profits, financial requirements and other factors, including legal restrictions, rating agency requirements, credit facility limitations and such other factors as our Board of Directors deems relevant.

In June 2012, we filed a universal shelf registration statement with the SEC. This registration statement, which expires in June 2015, allows for the future possible offer and sale by the Company of up to $500 million in the aggregate of various types of securities including common stock, preferred stock, debt securities, depositary shares, warrants, units or stock purchase contracts and stock purchase units. The shelf registration statement enables us to efficiently access the public equity or debt markets in order to meet future capital needs, if necessary. This report is not an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state.

48

We primarily rely upon dividends from our subsidiaries to meet our Parent Company’s obligations. Since the issuance of the senior debt in April 2006, the Parent Company’s cash obligations primarily consist of semi-annual interest payments on the senior debt, which are currently $4.0 million. Going forward, the interest payments and any share repurchases may be made from funds currently at the Parent Company or dividends from its subsidiaries. The dividends have historically been paid by Navigators Insurance Company. Based on the June 30, 2012 surplus of Navigators Insurance Company, the approximate maximum amount available for the payment of dividends by Navigators Insurance Company during the preceding 12 month period without prior regulatory approval is $60.9 million. During the preceding 12 month period Navigators Insurance Company declared and paid $35.0 million of dividends to the Parent Company, $10.0 million of which were declared and paid in the first quarter of 2012.

Condensed Parent Company balance sheets as of June 30, 2012 (unaudited) and December 31, 2011 are shown in the table below:

	June 30,		December 31,
In thousands	2012		2011
Cash and investments	$	13,402	$	8,315
Investments in subsidiaries		923,850		895,047
Goodwill and other intangible assets		2,534		2,534
Other assets		18,049		13,806
Total assets	$	957,835	$	919,702
Senior Notes	$	114,348	$	114,276
Accounts payable and other liabilities		337		649
Accrued interest payable		1,342		1,342
Total liabilities	$	116,027	$	116,267
Stockholders’ equity	$	841,808	$	803,435
Total liabilities and stockholders’ equity	$	957,835	$	919,702

On April 1, 2011, we entered into a $165 million credit facility agreement with ING Bank N.V., London Branch, individually and as Administrative Agent, and a syndicate of lenders. The credit facility, which is denominated in U.S. dollars, is utilized to fund our participation in Syndicate 1221 through letters of credit for the 2012 and 2011 underwriting years, as well as open prior years. The letters of credit issued under the facility are denominated in British pounds and their aggregate face amount will fluctuate based on exchange rates. If any letters of credit remain outstanding under the facility after December 31, 2012, we would be required to post additional collateral to secure the remaining letters of credit. As of June 30, 2012, letters of credit with an aggregate face amount of $154.5 million were outstanding under the credit facility.

This credit facility contains customary covenants for facilities of this type, including restrictions on indebtedness and liens, limitations on mergers, dividends and the sale of assets, and requirements as to maintaining certain consolidated tangible net worth, statutory surplus and other financial ratios. The credit facility also provides for customary events of default, including failure to pay principal, interest or fees when due, failure to comply with covenants, any representation or warranty made by the Company being false in any material respect, default under certain other indebtedness, certain insolvency or receivership events affecting the Company and its subsidiaries, the occurrence of certain material judgments, or a change in control of the Company. The letter of credit facility is secured by a pledge of the stock of certain insurance subsidiaries of the Company. To the extent the aggregate face amount issued under the credit facility exceeds the commitment amount, we are required to post collateral with the lead bank of the consortium. We were in compliance with all covenants under the credit facility as of June 30, 2012.

The applicable margin and applicable fee rate payable under the credit facility are based on a tiered schedule that is based on the Company’s then-current ratings issued by Standard & Poor’s (“S&P”) and Moody’s Investor Services (“Moody’s”) with respect to the Company’s Senior Notes without third-party credit enhancement, and the amount of the Company’s own collateral utilized to fund its participation in Syndicate 1221.

49

Time lags do occur in the normal course of business between the time gross loss reserves are paid by the Company and the time such gross paid losses are billed and collected from reinsurers. Reinsurance recoverable amounts related to gross loss reserves as of June 30, 2012 are anticipated to be billed and collected over the next several years as the gross loss reserves are paid by the Company.

Generally, for pro rata or quota share reinsurers, we issue quarterly settlement statements for premiums less commissions and paid loss activity, which are expected to be settled within 45 days. We have the ability to issue “cash calls” requiring such reinsurers to pay losses whenever paid loss activity for a claim ceded to a particular reinsurance treaty exceeds a predetermined amount (generally $0.5 million to $1.0 million) as set forth in the pro rata treaty. For the Insurance Companies, cash calls must generally be paid within 30 calendar days. There is generally no specific settlement period for the Lloyd’s Operations cash call provisions, but such billings have historically on average been paid within 45 calendar days.

Generally, for excess-of-loss reinsurers we pay quarterly deposit premiums based on the estimated subject premiums over the contract period (usually one year) that are subsequently adjusted based on actual premiums determined after the expiration of the applicable reinsurance treaty. Paid losses subject to excess-of-loss recoveries are generally billed as they occur and are usually settled by reinsurers within 30 calendar days for the Insurance Companies and 30 business days for the Lloyd’s Operations.

We sometimes withhold funds from reinsurers and may apply ceded loss billings against such funds in accordance with the applicable reinsurance agreements.

Liquidity

Consolidated Cash Flows

Net cash provided by operating activities was $15.0 million for the six months ended June 30, 2012 compared to $14.4 million for the same period in 2011. The increase in cash flow from operations was due to improved collections on premium receivables and reinsurance recoverables, offset by an increase in paid losses and current income taxes paid.

Net cash used in investing activities was $97.0 million for the six months ended June 30, 2012 compared to net cash provided by investing activities of $34.5 million for the same period in 2011. The increase in cash used by investing activities is primarily due to the ongoing management of our investment portfolio.

Net cash provided by financing activities was $0.4 million for the six months ended June 30, 2012 compared to net cash used in financing activities of $40.3 million for the comparable period in 2011. The reduction in cash used by financing activities relates to our share repurchase program, which expired at the end of 2011.

We believe that the cash flow generated by the operating activities of our subsidiaries will provide sufficient funds for us to meet our liquidity needs over the next twelve months. Beyond the next twelve months, cash flow available to us may be influenced by a variety of factors, including general economic conditions and conditions in the insurance and reinsurance markets, as well as fluctuations from year to year in claims experience.

We believe that we have adequately managed our cash flow requirements related to reinsurance recoveries from its positive cash flows and the use of available short-term funds when applicable. However, there can be no assurances that we will be able to continue to adequately manage such recoveries in the future or that collection disputes or reinsurer insolvencies will not arise that could materially increase the collection time lags or result in recoverable write-offs causing additional incurred losses and liquidity constraints to the Company. The payment of gross claims and related collections from reinsurers with respect to large losses could significantly impact our liquidity needs. However, we expect to collect our paid reinsurance recoverables generally under the terms described above.

50

Investments

As of June 30, 2012, the weighted average rating of our fixed maturity investments was “AA” by S&P and “Aa” by Moody’s. The entire fixed maturity investment portfolio, except for investments with a fair value of $18.1 million, consists of investment grade bonds. As of June 30, 2012, our portfolio had a duration of 3.9 years. Management periodically projects cash flow of the investment portfolio and other sources in order to maintain the appropriate levels of liquidity in an effort to ensure our ability to satisfy claims. As of June 30, 2012 and December 31, 2011, all fixed maturity securities and equity securities held by us were classified as available-for-sale.

The following tables set forth our cash and investments as of June 30, 2012 and December 31, 2011. The tables below includes OTTI securities recognized within other comprehensive income.

	June 30, 2012
In thousands	Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Amortized Cost		OTTI Recognized in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	454,523	$	10,330	$	(160	)	$	444,353	$	—
States, municipalities and political subdivisions		426,218		29,960		(115	)		396,373		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		398,310		17,393		(44	)		380,961		—
Residential mortgage obligations		37,805		44		(1,651	)		39,412		(887	)
Asset-backed securities		54,416		933		(33	)		53,516		—
Commercial mortgage-backed securities		209,273		14,456		(55	)		194,872		—
Subtotal	$	699,804	$	32,826	$	(1,783	)	$	668,761	$	(887	)
Corporate bonds		443,884		18,519		(779	)		426,144		—
Total fixed maturities	$	2,024,429	$	91,635	$	(2,837	)	$	1,935,631	$	(887	)
Equity securities—common stocks		103,649		29,709		(517	)		74,457		—
Short-term investments		161,983		—		—			161,983		—
Cash		45,842		—		—			45,842		—
Total	$	2,335,903	$	121,344	$	(3,354	)	$	2,217,913	$	(887	)

	December 31, 2011
In thousands	Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Amortized Cost		OTTI Recognized in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	336,070	$	8,979	$	(383	)	$	327,474	$	—
States, municipalities and political subdivisions		410,836		28,887		(108	)		382,057		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		395,860		17,321		(3	)		378,542		—
Residential mortgage obligations		23,148		8		(2,848	)		25,988		(1,682	)
Asset-backed securities		48,934		695		(75	)		48,314		—
Commercial mortgage-backed securities		216,034		10,508		(593	)		206,119		—
Subtotal	$	683,976	$	28,532	$	(3,519	)	$	658,963	$	(1,682	)
Corporate bonds		457,187		15,743		(6,772	)		448,216		—
Total fixed maturities	$	1,888,069	$	82,141	$	(10,782	)	$	1,816,710	$	(1,682	)
Equity securities—common stocks		95,849		23,240		(958	)		73,567		—
Short-term investments		122,220		—		—			122,220		—
Cash		127,360		—		—			127,360
Total	$	2,233,498	$	105,381	$	(11,740	)	$	2,139,857	$	(1,682	)

51

The fair value of our investment portfolio may fluctuate significantly in response to various factors such as changes in interest rates, investment quality ratings, equity prices, foreign exchange rates and credit spreads. We do not have the intent to sell nor is it more likely than not that we will have to sell debt securities in unrealized loss positions that are not other-than-temporarily impaired before recovery. We may realize investment losses to the extent our liquidity needs require the disposition of fixed maturity securities in unfavorable interest rate, liquidity or credit spread environments. Significant changes in the factors we consider when evaluating investment for impairment losses could result in a significant change in impairment losses reported in the consolidated financial statements.

Invested assets increased in 2012 since the prior comparable period for 2011 primarily due to unrealized gains and cash flow from operations. The annualized pre-tax investment yield, excluding net realized gains and losses and net OTTI losses recognized in earnings, was 2.8% and 2.4% for the three and six months ended June 30, 2012, respectively, compared to 3.3% for both the three and six months ended June 30, 2011. The 2.4% annualized pre-tax yield for the six months ended June 30, 2012 includes investment expenses of $4.5 million for interest expense related to the settlement of a dispute with Equitas over foregone interest on amounts that were due on certain reinsurance contracts. In the dispute Equitas alleged that we failed to make timely payments to them under certain reinsurance agreements in connection with subrogation recoveries received by us with respect to several catastrophe losses that occurred in the late 1980’s and early 1990’s. Excluding the impact of the aforementioned interest expense, the annualized pre-tax yield for the six month ended June 30, 2012 would have been 2.8%, reflective of the general decline in market yields.

The tax equivalent yields for the three and six months ended June 30, 2012 on a consolidated basis were 3.0% and 2.6%, respectively, compared to 3.5% and 3.5% for the same periods during 2011. The portfolio duration was 3.9 years for the six months ended June 30, 2012 and 3.6 years for the same period during 2011, respectively. Since the beginning of 2012, the tax-exempt portion of our investment portfolio has increased by $13.9 million to approximately 19% of the fixed maturities investment portfolio at June 30, 2012 compared to approximately 19.7% at December 31, 2011.

We are a specialty insurance company and periods of moderate economic recession or inflation tend not to have a significant direct effect on our underwriting operations. They do, however, impact our investment portfolio. A decrease in interest rates will tend to decrease our yield and have a positive effect on the fair value of our invested assets. An increase in interest rates will tend to increase our yield and have a negative effect on the fair value of our invested assets.

The contractual maturity dates for fixed maturity securities categorized by the number of years until maturity as of June 30, 2012 are shown in the following table:

	June 30, 2012
In thousands	Fair Value		Amortized Cost
Due in one year or less	$	56,876	$	56,483
Due after one year through five years		658,027		641,379
Due after five years through ten years		379,158		353,733
Due after ten years		230,564		215,275
Mortgage- and asset-backed securities		699,804		668,761
Total	$	2,024,429	$	1,935,631

Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Due to the periodic repayment of principal, the aggregate amount of mortgage-backed and asset-backed securities is estimated to have an effective maturity of approximately 3.6 years.

52

The following table sets forth the amount and percentage of our fixed maturities as of June 30, 2012 by S&P credit rating or, if an S&P rating is not available, the equivalent Moody’s rating. The table includes fixed maturities at fair value, and the total rating is the weighted average quality rating.

In thousands	Rating	Fair Value		Percent of Total
Rating description:
Extremely strong	AAA	$	341,094		17	%
Very strong	AA		1,150,879		56	%
Strong	A		381,490		19	%
Adequate	BBB		132,820		7	%
Speculative	BB & Below		14,282		1	%
Not rated	NR		3,864		0	%
Total		$	2,024,429		100	%

The following table sets forth our U.S. Treasury bonds, agency bonds and foreign government bonds as of June 30, 2012 and December 31, 2011:

	June 30, 2012
In thousands	Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Amortized Cost
U.S. Treasury bonds	$	174,130	$	6,101	$	(59	)	$	168,088
Agency bonds		206,903		3,395		(3	)		203,511
Foreign government bonds		73,490		834		(98	)		72,754
Total	$	454,523	$	10,330	$	(160	)	$	444,353

	December 31, 2011
In thousands	Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Amortized Cost
U.S. Treasury bonds	$	137,228	$	5,422	$	—		$	131,806
Agency bonds		136,506		2,870		(133	)		133,769
Foreign government bonds		62,336		687		(250	)		61,899
Total	$	336,070	$	8,979	$	(383	)	$	327,474

The following table sets forth the composition of the investments categorized as states, municipalities and political subdivisions in our portfolio by generally equivalent S&P and Moody’s ratings (not all securities in our portfolio are rated by both S&P and Moody’s) as of June 30, 2012. The securities that are not rated in the table below are primarily state bonds.

In thousands	Equivalent					Net
Equivalent S&P Rating	Moody’s Rating	Fair Value		Book Value		Unrealized Gain  (Loss)
AAA/AA/A	Aaa/Aa/A	$	403,621	$	374,592	$	29,029
BBB	Baa		18,733		18,067		666
BB	Ba		—		—		—
B	B		—		—		—
CCC or lower	Caa or lower		—		—		—
NR	NR		3,864		3,714		150
Total		$	426,218	$	396,373	$	29,845

53

The following table sets forth the municipal bond holdings by sectors as of June 30, 2012 and December 31, 2011:

	June 30, 2012					December 31, 2011
In thousands	Fair Value		Percent of Total			Fair Value		Percent of Total
Municipal Sector:
General obligation	$	74,991		18	%	$	43,195		10	%
Prerefunded		19,925		5	%		18,636		5	%
Revenue		290,448		68	%		309,659		75	%
Taxable		40,854		9	%		39,346		10	%
Total	$	426,218		100	%	$	410,836		100	%

We own $121.9 million of municipal securities which are credit enhanced by various financial guarantors. As of June 30, 2012, the average underlying credit rating for these securities is A+. There has been no material adverse impact to our investment portfolio or results of operations as a result of downgrades of the credit ratings for several of the financial guarantors.

We analyze our mortgage-backed and asset-backed securities by credit quality of the underlying collateral distinguishing between the securities issued by the Federal National Mortgage Association (“FNMA”), the Federal Home Loan Mortgage Corporation (“FHLMC”) and the Government National Mortgage Association (“GNMA”) which are Federal government sponsored entities, and the non-FNMA and non-FHLMC securities broken out by prime, Alternative A-paper (“Alt-A”) and subprime collateral. The securities issued by FNMA and FHLMC are the obligations of each respective entity. Legislation has provided for guarantees by the U.S. Government of up to $100 billion each for FNMA and FHLMC.

Prime collateral consists of mortgages or other collateral from the most creditworthy borrowers. Alt-A collateral consists of mortgages or other collateral from borrowers which have a risk potential that is greater than prime but less than subprime. The subprime collateral consists of mortgages or other collateral from borrowers with low credit ratings. Such subprime and Alt-A categories are as defined by S&P.

The following table sets forth our agency mortgage-backed securities and residential mortgage securities (“RMBS”) by those issued by the Government National Mortgage Association (“GNMA”), FNMA, and FHLMC, and the quality category (prime, Alt-A and subprime) for all other such investments as of June 30, 2012:

	June 30, 2012
In thousands	Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Amortized Cost
Agency mortgage-backed securities:
GNMA	$	112,901	$	6,673	$	(44	)	$	106,272
FNMA		214,172		8,589		—			205,583
FHLMC		71,237		2,131		—			69,106
Total agency mortgage-backed securities	$	398,310	$	17,393	$	(44	)	$	380,961
Residential mortgage-backed securities:
Prime	$	12,537	$	23	$	(1,251	)	$	13,765
Alt-A		1,975		—		(340	)		2,315
Subprime		—		—		—			—
Non-U.S. RMBS		23,293		21		(60	)		23,332
Total residential mortgage-backed securities	$	37,805	$	44	$	(1,651	)	$	39,412

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The following table sets forth the composition of the investments categorized as residential mortgage obligations in our portfolio by generally equivalent S&P and Moody’s ratings (not all securities in our portfolio are rated by both S&P and Moody’s) as of June 30, 2012:

		June 30, 2012
In thousands	Equivalent					Net
Equivalent S&P Rating	Moody’s Rating	Fair Value		Book Value		Unrealized Gain  (Loss)
AAA/AA/A	Aaa/Aa/A	$	24,866	$	25,005	$	(139	)
BBB	Baa		1,285		1,392		(107	)
BB	Ba		2,042		2,197		(155	)
B	B		2,004		2,241		(237	)
CCC or lower	Caa or lower		7,608		8,577		(969	)
NR	NR		—		—		—
Total		$	37,805	$	39,412	$	(1,607	)

Details of the collateral of our asset-backed securities portfolio as of June 30, 2012 are presented below:

In thousands	AAA		AA		A		BBB		BB		CCC		Fair Value		Amortized Cost		Unrealized Gain (Loss)
Auto loans	$	—	$	9,565	$	—	$	—	$	—	$	—	$	9,565	$	9,373	$	192
Credit cards		14,003		—		—		—		—		—		14,003		13,548		455
Time share		—		—		18,284		—		—		—		18,284		18,080		204
Student loans		6,569		4,333		—		—		—		—		10,902		10,884		18
Miscellaneous		936		724		—		—		—		2		1,662		1,631		31
Total	$	21,508	$	14,622	$	18,284	$	—	$	—	$	2	$	54,416	$	53,516	$	900

The following table sets forth the composition of the investments categorized as commercial mortgage-backed securities in our portfolio by generally equivalent S&P and Moody’s ratings (not all securities in our portfolio are rated by both S&P and Moody’s) as of June 30, 2012:

		June 30, 2012
In thousands	Equivalent					Net
Equivalent S&P Rating	Moody’s Rating	Fair Value		Book Value		Unrealized Gain  (Loss)
AAA/AA/A	Aaa/Aa/A	$	209,273	$	194,872	$	14,401
BBB	Baa		—		—		—
BB	Ba		—		—		—
B	B		—		—		—
CCC or lower	Caa or lower		—		—		—
NR	NR		—		—		—
Total		$	209,273	$	194,872	$	14,401

55

The following table sets forth the composition of the investments categorized as corporate bonds in our portfolio by generally equivalent S&P and Moody’s ratings (not all securities in our portfolio are rated by both S&P and Moody’s) as of June 30, 2012:

		June 30, 2012
In thousands	Equivalent					Net
Equivalent	Moody’s					Unrealized
S&P Rating	Rating	Fair Value		Book Value		Gain (Loss)
AAA/AA/A	Aaa/Aa/A	$	328,456	$	313,466	$	14,990
BBB	Baa		112,801		110,128		2,673
BB	Ba		2,627		2,550		77
B	B		—		—		—
CCC or lower	Caa or lower		—		—		—
NR	NR		—		—		—
Total		$	443,884	$	426,144	$	17,740

The company holds non-sovereign European securities of $76.0 million at fair value and $74.5 million at amortized cost, primarily in the investment portfolio. This represents 3.6% of our total fixed income and equity portfolio. Our largest exposure is in France with a total of $36.6 million followed by the Netherlands with a total of $30.3 million. We have no exposure to Greece, Portugal, Italy or Spain.

56

The following table summarizes all securities in a gross unrealized loss position as of June 30, 2012 and December 31, 2011, showing the aggregate fair value and gross unrealized loss by the length of time those securities had continuously been in a gross unrealized loss position as well as the number of securities:

	June 30, 2012						December 31, 2011
In thousands, except # of securities	Number  of Securities		Fair Value		Gross Unrealized Loss		Number  of Securities		Fair Value		Gross Unrealized Loss
Fixed maturities:
U.S. Government Treasury bonds, agency bonds, and foreign government bonds
0-6 months		13	$	55,371	$	71		7	$	58,587	$	98
7-12 months		—		—		—		—		—		—
> 12 months		1		4,580		89		2		6,883		285
Subtotal		14	$	59,951	$	160		9	$	65,470	$	383
States, municipalities and political subdivisions
0-6 months		5	$	3,805	$	48		7	$	5,894	$	72
7-12 months		5		3,369		46		1		216		1
> 12 months		2		1,580		21		5		2,420		35
Subtotal		12	$	8,754	$	115		13	$	8,530	$	108
Agency mortgage-backed securities
0-6 months		2	$	1,683	$	44		3	$	5,087	$	3
7-12 months		—		—		—		—		—		—
> 12 months		—		—		—		—		—		—
Subtotal		2	$	1,683	$	44		3	$	5,087	$	3
Residential mortgage obligations
0-6 months		1	$	18,163	$	56		6	$	6,672	$	184
7-12 months		7		2,673		88		7		5,250		313
> 12 months		48		12,151		1,507		47		10,749		2,351
Subtotal		56	$	32,987	$	1,651		60	$	22,671	$	2,848
Asset-backed securities
0-6 months		2	$	7,045	$	4		2	$	4,933	$	12
7-12 months		1		369		1		5		6,645		63
> 12 months		5		4,610		28		1		2		—
Subtotal		8	$	12,024	$	33		8	$	11,580	$	75
Commercial mortgage-backed securities
0-6 months		3	$	520	$	1		6	$	5,465	$	29
7-12 months		4		3,754		43		3		6,840		550
> 12 months		4		1,035		11		3		1,503		14
Subtotal		11	$	5,309	$	55		12	$	13,808	$	593
Corporate bonds
0-6 months		3	$	18,246	$	47		52	$	135,516	$	4,539
7-12 months		16		35,128		443		18		27,561		1,457
> 12 months		10		13,406		289		8		14,898		776
Subtotal		29	$	66,780	$	779		78	$	177,975	$	6,772
Total fixed maturities		132	$	187,488	$	2,837		183	$	305,121	$	10,782
Equity securities — common stocks
0-6 months		1	$	1,579	$	469		4	$	3,320	$	587
7-12 months		1		1,540		48		1		1,629		371
> 12 months		—		—		—		—		—		—
Total equity securities		2	$	3,119	$	517		5	$	4,949	$	958

57

We analyze the unrealized losses quarterly to determine if any are other-than-temporary. The above unrealized losses have been determined to be temporary based on our policies.

In the above table the gross unrealized loss for the greater than 12 months category consists primarily of residential mortgage-backed securities. Residential mortgage-backed securities are a type of fixed income security in which residential mortgage loans are sold into a trust or special purpose vehicle, thereby securitizing the cash flows of the mortgage loans.

To determine whether the unrealized loss on structured securities is other-than-temporary, we analyze the projections provided by our investment managers with respect to an expected principal loss under a range of scenarios and utilize the most likely outcomes. The analysis relies on actual collateral performance measures such as default rate, prepayment rate and loss severity. These assumptions are applied throughout the remaining term of the deal, incorporating the transaction structure and priority of payments, to generate loss adjusted cash flows. Results of the analysis will indicate whether the security is expected ultimately to incur a loss or whether there is a material impact on yield due to either a projected loss or a change in cash flow timing. A break even default rate is also calculated. A comparison of the break even default rate to the actual default rate provides an indication of the level of cushion or coverage to the first dollar principal loss. The analysis applies the stated assumptions throughout the remaining term of the transaction to forecast cash flows, which are then applied through the transaction structure to determine whether there is a loss to the security. For securities in which a tranche loss is present, and the net present value of loss adjusted cash flows is less than book value, an impairment is recognized. The output data also includes a number of additional metrics such as average life remaining, original and current credit support, over 60 day delinquency and security rating.

Prepayment assumptions associated with the mortgage-backed and asset-backed securities are reviewed on a periodic basis. When changes in prepayment assumptions are deemed necessary as the result of actual prepayments differing from anticipated prepayments, securities are revalued based upon the new prepayment assumptions utilizing the retrospective accounting method.

As of June 30, 2012 and December 31, 2011, the largest single unrealized loss by a non-government backed issuer in the investment portfolio was $0.4 million and $1.4 million, respectively.

The following table sets forth the composition of the investments categorized as fixed maturity securities in our portfolio with gross unrealized losses by generally equivalent S&P and Moody’s ratings (not all of the securities are rated by S&P and Moody’s ) as of June 30, 2012:

			Gross Unrealized Loss					Fair Value
In thousands		Equivalent
NAIC Rating	Equivalent S&P Rating	Moody’s Rating	Amount		Percent of Total			Amount		Percent of Total
1	AAA/AA/A	Aaa/Aa/A	$	1,423		50	%	$	169,340		90	%
2	BBB	Baa		98		3	%		7,186		4	%
3	BB	Ba		172		6	%		1,597		1	%
4	B	B		175		6	%		1,757		1	%
5	CCC or lower	Caa or lower		140		5	%		1,402		1	%
6	NR	NR		829		30	%		6,206		3	%
Total			$	2,837		100	%	$	187,488		100	%

As of June 30, 2012, the gross unrealized losses in the table above were related to fixed maturity securities that are rated investment grade, which is defined as a security having an S&P rating of “BBB–” or higher, or a Moody’s rating of “Baa3” or higher, except for $1.3 million which is rated below investment grade or not rated. Unrealized losses on investment grade securities principally relate to changes in interest rates or changes in sector-related credit spreads since the securities were acquired.

58

The contractual maturity for fixed maturity securities categorized by the number of years until maturity, with a gross unrealized loss as of June 30, 2012 is presented in the following table:

	June 30, 2012
	Gross Unrealized Losses					Fair Value
In thousands	Amount		Percent of Total			Amount		Percent of Total
Due in one year or less	$	108		4	%	$	11,872		6	%
Due after one year through five years		530		19	%		77,548		41	%
Due after five years through ten years		305		11	%		33,587		18	%
Due after ten years		111		4	%		12,478		7	%
Mortgage- and asset-backed securities		1,783		62	%		52,003		28	%
Total	$	2,837		100	%	$	187,488		100	%

The following table summarizes the gross unrealized investment losses by the length of time that the fair value continues to be less than 80% of amortized cost as of June 30, 2012:

	June 30, 2012
In thousands	Fixed Maturities		Equity Securities		Total
Less than three months	$	—	$	—	$	—
Longer than three months and less than six months		—		468		468
Longer than six months and less than twelve months		—		—		—
Longer than twelve months		230		—		230
Total	$	230	$	468	$	698

The table below summarizes our activity related to OTTI losses for the periods indicated:

	Three Months Ended June 30,								Six Months Ended June 30,
	2012				2011				2012				2011
In thousands, except # of securities	Number  of Securities		Amount		Number  of Securities		Amount		Number  of Securities		Amount		Number  of Securities		Amount
Total OTTI losses:
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		—		—		6		516		1		54		7		549
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		2		496		1		317		3		639		1		547
Total		2	$	496		7	$	833		4	$	693		8	$	1,096
Less: Portion of loss in accumulated other comprehensive income (loss):
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				301				43				322
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	—			$	301			$	43			$	322
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				215				11				227
Asset-backed securities				—				—				—				—
Equities				496				317				639				547
Total			$	496			$	532			$	650			$	774

59

During the three months ended June 30, 2012, we recognized OTTI losses of $0.5 million related to two equity securities. During the six months ended June 30, 2012, we recognized OTTI losses of $0.7 million related to one non-agency mortgage-backed security and three equity securities. During the comparable periods in 2011, we recognized OTTI losses of $0.5 million and $0.8 million related to residential mortgage backed securities and equity securities. The significant inputs used to measure the amount of credit loss recognized in earnings were actual delinquency rates, default probability assumptions, severity assumptions and prepayment assumptions. Projected losses are a function of both loss severity and probability of default. Default probability and severity assumptions differ based on property type, vintage and the stress of the collateral. We do not intend to sell any of these securities and it is more likely than not that we will not be required to sell these securities before the recovery of the amortized cost basis.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

The following updates our disclosure regarding foreign currency exchange rate risk as previously stated in the Company’s 2011 Annual Report on Form 10-K.

Foreign Currency Exchange Rate Risk

Our Lloyd’s Operations are exposed to foreign currency exchange rate risk primarily related to foreign-denominated cash, cash equivalents and marketable securities (“foreign funds”), premiums receivable, reinsurance recoverables on paid and unpaid losses and loss adjustment expenses as well as reserves for losses and loss adjustment expenses. The principal currencies creating foreign currency exchange risk for the Lloyd’s Operations are the British pound, the Euro and the Canadian dollar. The Lloyd’s Operations manages its foreign currency exchange rate risk primarily through asset-liability matching.

Based on the primary foreign-denominated balances within the Lloyd’s Operations as of June 30, 2012 an assumed 5%, 10% and 15% negative currency movement would result in changes as follows:

	June 30, 2012
			Negative Currency Movement of
In millions	USD Equivalent		5%			10%			15%
Cash, cash equivalents and marketable securities at fair value	$	81.3	$	(4.1	)	$	(8.1	)	$	(12.2	)
Premiums receivable	$	35.4	$	(1.8	)	$	(3.5	)	$	(5.3	)
Reinsurance recoverables on paid, unpaid losses and LAE	$	57.3	$	(2.9	)	$	(5.7	)	$	(8.6	)
Reserves for losses and loss adjustment expenses	$	158.0	$	7.9		$	15.8		$	23.7

Item 4. Controls and Procedures

(a) The Chief Executive Officer and Chief Financial Officer of the Company have evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), as of the end of the period covered by this quarterly report. Based on such evaluation, such officers have concluded that as of the end of such period the Company’s disclosure controls and procedures are effective in identifying, on a timely basis, material information required to be disclosed in our reports filed or submitted under the Exchange Act.

(b) There have been no changes during our second fiscal quarter in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

60

PART II—OTHER INFORMATION

Item 1. Legal Proceedings

In the ordinary course of conducting business, our subsidiaries are involved in various legal proceedings, either indirectly as insurers for parties or directly as defendants. Most of these proceedings consist of claims litigation involving our subsidiaries as either (a) liability insurers defending or providing indemnity for third party claims brought against insureds or (b) insurers defending first party coverage claims brought against them. We account for such activity through the establishment of unpaid loss and loss adjustment reserves. Our management believes that the ultimate liability, if any, with respect to such ordinary-course claims litigation, after consideration of provisions made for potential losses and cost of defense, will not be material to our consolidated financial condition, results of operations or cash flows.

Our subsidiaries are also from time to time involved with other legal actions, some of which assert claims for substantial amounts. These actions include claims asserting extra contractual obligations, such as claims involving allegations of bad faith in the handling of claims or the underwriting of policies. In general, we believe we have valid defenses to these cases. Our management expects that the ultimate liability, if any, with respect to future extra-contractual matters will not be material to our consolidated financial position. Nonetheless, given the large or indeterminate amounts sought in certain of these matters, and the inherent unpredictability of litigation, an adverse outcome in such matters could, from time to time, have a material adverse outcome on our consolidated results of operations or cash flows in a particular fiscal quarter or year.

61

Item 1A. Risk Factors

There have been no material changes from the risk factors as previously disclosed in the Company’s 2011 Annual Report on Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable

Item 5. Other Information

None

62

Item 6. Exhibits

Exhibit No.	Description of Exhibit
11-1	Computation of Per Share Earnings	*
31-1	Certification of CEO per Section 302 of the Sarbanes-Oxley Act	*
31-2	Certification of CFO per Section 302 of the Sarbanes-Oxley Act	*
32-1	Certification of CEO per Section 906 of the Sarbanes-Oxley Act (This exhibit is intended to be furnished in accordance with Regulation S-K item 601(b)(32)(ii) and shall not be deemed to be filed for purposes of section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference into any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference).	*
32-2	Certification of CFO per Section 906 of the Sarbanes-Oxley Act (This exhibit is intended to be furnished in accordance with Regulation S-K item 601(b)(32)(ii) and shall not be deemed to be filed for purposes of section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference into any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference).	*
101.INS	XBRL Instance Document	*
101.SCH	XBRL Taxonomy Extension Scheme	*
101.CAL	XBRL Taxonomy Extension Calculation Database	*
101.LAB	XBRL Taxonomy Extension Label Linkbase	*
101.PRE	XBRL Taxonomy Extension Presentation Linkbase	*
101.DEF	XBRL Taxonomy Extension Definition Linkbase	*

* Included herein

63

Signatures

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.

	The Navigators Group, Inc.
	(Registrant)
Date: August 3, 2012	/s/ Ciro M. DeFalco
	Ciro M. DeFalco
	Senior Vice President and Chief Financial Officer

64

INDEX TO EXHIBITS

Exhibit No.	Description of Exhibit
11-1	Computation of Per Share Earnings	*
31-1	Certification of CEO per Section 302 of the Sarbanes-Oxley Act	*
31-2	Certification of CFO per Section 302 of the Sarbanes-Oxley Act	*
32-1	Certification of CEO per Section 906 of the Sarbanes-Oxley Act (This exhibit is intended to be furnished in accordance with Regulation S-K item 601(b)(32)(ii) and shall not be deemed to be filed for purposes of section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference into any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference).	*
32-2	Certification of CFO per Section 906 of the Sarbanes-Oxley Act (This exhibit is intended to be furnished in accordance with Regulation S-K item 601(b)(32)(ii) and shall not be deemed to be filed for purposes of section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference into any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference).	*
101.INS	XBRL Instance Document	*
101.SCH	XBRL Taxonomy Extension Scheme	*
101.CAL	XBRL Taxonomy Extension Calculation Database	*
101.LAB	XBRL Taxonomy Extension Label Linkbase	*
101.PRE	XBRL Taxonomy Extension Presentation Linkbase	*
101.DEF	XBRL Taxonomy Extension Definition Linkbase	*

* Included herein

65

EX-11.1

Exhibit 11-1

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

Computation of Per Share Earnings

The following table presents the computation of basic and diluted earnings per share for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
In thousands, except share and per share amounts	2012		2011		2012		2011
Net income (loss)	$	14,899	$	9,504	$	22,803	$	1,611
Basic weighted average shares		14,006,361		15,372,670		13,992,901		15,554,670
Effect of common stock equivalents:
Assumed exercise of stock options and vesting of stock grants		202,398		353,180		253,046		389,134
Diluted weighted average shares		14,208,759		15,725,850		14,245,947		15,943,804
Net income (loss) per common share:
Basic	$	1.06	$	0.62	$	1.63	$	0.10
Diluted	$	1.05	$	0.60	$	1.60	$	0.10

EX-31.1

Exhibit 31-1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PER

SECTION 302 OF THE SARBANES-OXLEY ACT

I, Stanley A. Galanski, certify that:

1. I have reviewed this report on Form 10-Q of The Navigators Group, Inc.;

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 that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

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

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

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

Date: August 3, 2012	/s/ Stanley A. Galanski
	Name:    Stanley A. Galanski
	Title:      President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31-2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PER

SECTION 302 OF THE SARBANES-OXLEY ACT

I, Ciro M. DeFalco, certify that:

1. I have reviewed this report on Form 10-Q of The Navigators Group, Inc.;

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 that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

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

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

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

Date: August 3, 2012	/s/ Ciro M. DeFalco
	Name:    Ciro M. DeFalco
	Title:       Senior Vice President and Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

Exhibit 32-1

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 The Navigators Group, Inc. (the “Company”) on Form 10-Q for the period ending June 30, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Stanley A. Galanski, 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) or 15(d) of the Securities Exchange Act of 1934; and

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

/s/ Stanley A. Galanski

Stanley A. Galanski

President and Chief Executive Officer

August 3, 2012

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

EX-32.2

Exhibit 32-2

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 The Navigators Group, Inc. (the “Company”) on Form 10-Q for the period ending June 30, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Ciro M. DeFalco, 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) or 15(d) of the Securities Exchange Act of 1934; and

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

/s/ Ciro M. DeFalco

Ciro M. DeFalco

Senior Vice President and Chief Financial Officer

August 3, 2012

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

XML

Summary of Aggregate Fair Value and Gross Unrealized Loss by Length of Time Securities had Continuously been in Gross Unrealized Loss Position as Well as Number of Securities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012 Investment	Dec. 31, 2011 Investment
Fixed maturities
Gain (Loss) on Investments [Line Items]
Number of Securities	132	183
Fair Value	$ 187,488	$ 305,121
Gross Unrealized Loss	2,837	10,782
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign government bonds
Gain (Loss) on Investments [Line Items]
Number of Securities	14	9
Fair Value	59,951	65,470
Gross Unrealized Loss	160	383
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign government bonds | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	13	7
Fair Value	55,371	58,587
Gross Unrealized Loss	71	98
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign government bonds | > 12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	1	2
Fair Value	4,580	6,883
Gross Unrealized Loss	89	285
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Number of Securities	12	13
Fair Value	8,754	8,530
Gross Unrealized Loss	115	108
Fixed maturities | States, municipalities and political subdivisions | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	5	7
Fair Value	3,805	5,894
Gross Unrealized Loss	48	72
Fixed maturities | States, municipalities and political subdivisions | 7-12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	5	1
Fair Value	3,369	216
Gross Unrealized Loss	46	1
Fixed maturities | States, municipalities and political subdivisions | > 12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	2	5
Fair Value	1,580	2,420
Gross Unrealized Loss	21	35
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Number of Securities	2	3
Fair Value	1,683	5,087
Gross Unrealized Loss	44	3
Fixed maturities | Agency mortgage-backed securities | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	2	3
Fair Value	1,683	5,087
Gross Unrealized Loss	44	3
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Number of Securities	56	60
Fair Value	32,987	22,671
Gross Unrealized Loss	1,651	2,848
Fixed maturities | Residential Mortgage Backed Securities | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	1	6
Fair Value	18,163	6,672
Gross Unrealized Loss	56	184
Fixed maturities | Residential Mortgage Backed Securities | 7-12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	7	7
Fair Value	2,673	5,250
Gross Unrealized Loss	88	313
Fixed maturities | Residential Mortgage Backed Securities | > 12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	48	47
Fair Value	12,151	10,749
Gross Unrealized Loss	1,507	2,351
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Number of Securities	8	8
Fair Value	12,024	11,580
Gross Unrealized Loss	33	75
Fixed maturities | Asset-backed securities | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	2	2
Fair Value	7,045	4,933
Gross Unrealized Loss	4	12
Fixed maturities | Asset-backed securities | 7-12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	1	5
Fair Value	369	6,645
Gross Unrealized Loss	1	63
Fixed maturities | Asset-backed securities | > 12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	5	1
Fair Value	4,610	2
Gross Unrealized Loss	28
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Number of Securities	11	12
Fair Value	5,309	13,808
Gross Unrealized Loss	55	593
Fixed maturities | Commercial mortgage-backed securities | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	3	6
Fair Value	520	5,465
Gross Unrealized Loss	1	29
Fixed maturities | Commercial mortgage-backed securities | 7-12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	4	3
Fair Value	3,754	6,840
Gross Unrealized Loss	43	550
Fixed maturities | Commercial mortgage-backed securities | > 12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	4	3
Fair Value	1,035	1,503
Gross Unrealized Loss	11	14
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Number of Securities	29	78
Fair Value	66,780	177,975
Gross Unrealized Loss	779	6,772
Fixed maturities | Corporate bonds | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	3	52
Fair Value	18,246	135,516
Gross Unrealized Loss	47	4,539
Fixed maturities | Corporate bonds | 7-12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	16	18
Fair Value	35,128	27,561
Gross Unrealized Loss	443	1,457
Fixed maturities | Corporate bonds | > 12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	10	8
Fair Value	13,406	14,898
Gross Unrealized Loss	289	776
Common Stock
Gain (Loss) on Investments [Line Items]
Number of Securities	2	5
Fair Value	3,119	4,949
Gross Unrealized Loss	517	958
Common Stock | 0-6 months
Gain (Loss) on Investments [Line Items]
Number of Securities	1	4
Fair Value	1,579	3,320
Gross Unrealized Loss	469	587
Common Stock | 7-12 months
Gain (Loss) on Investments [Line Items]
Number of Securities	1	1
Fair Value	1,540	1,629
Gross Unrealized Loss	$ 48	$ 371

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Reconciliation of Beginning and Ending Balances for all Investments Measured at Fair Value Using Level 3 Inputs (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 1,837
Realized Gains (Losses)
Unrealized Gains (Losses)	(26)
Purchases	(4)
Sales
Settlements
Transfers into Level 3
Transfers out of Level 3	(1,807)
Commercial mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	1,837
Realized Gains (Losses)
Unrealized Gains (Losses)	(26)
Purchases	(4)
Sales
Settlements
Transfers into Level 3
Transfers out of Level 3	$ (1,807)

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Realized Gains And Losses Excluding Net Other-Than-Temporary Impairment Losses Recognized in Earnings (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Gain (Loss) on Investments [Line Items]
Net realized gains (losses)	$ 4,217	$ 3,006	$ 6,059	$ 1,618
Fixed maturities
Gain (Loss) on Investments [Line Items]
Gains	4,717	4,443	7,858	7,312
Losses	(231)	(2,277)	(1,530)	(6,534)
Net realized gains (losses)	4,486	2,166	6,328	778
Equity Securities
Gain (Loss) on Investments [Line Items]
Gains	204	840	204	840
Losses	(473)		(473)
Net realized gains (losses)	$ (269)	$ 840	$ (269)	$ 840

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Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Income Taxes [Line Items]
Undistributed earnings of non-U.S. subsidiaries	$ 82,200,000		$ 82,200,000
Taxes payable on undistributed earnings	1,600,000		1,600,000
Income tax (benefit) expense	6,225,000	5,032,000	9,506,000	539,000
Effective income tax rate	29.50%	34.60%	29.40%	25.10%
Deferred Tax Assets: State and Local	600,000		600,000		200,000
State and local net operating loss carry-forwards	$ 200,000		$ 200,000		$ 200,000
United Kingdom
Income Taxes [Line Items]
Foreign effective income tax rate			35.00%
Corporate tax rate			26.00%
United Kingdom | Syndicate 1221 | Maximum
Income Taxes [Line Items]
Percentage of premiums	50.00%		50.00%
United Kingdom | Syndicate 1221 | Minimum
Income Taxes [Line Items]
Foreign effective income tax rate			35.00%
United Kingdom | Expected Future Tax Rate
Income Taxes [Line Items]
Corporate tax rate			24.00%
Net investment income
Income Taxes [Line Items]
Effective income tax rate	28.20%	28.70%	26.90%	28.60%
State and Local Jurisdiction | Maximum
Income Taxes [Line Items]
State and local tax carry-forwards expiration year			2031
State and Local Jurisdiction | Minimum
Income Taxes [Line Items]
State and local tax carry-forwards expiration year			2024

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Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Segment	Jun. 30, 2011
Segment Reporting Information [Line Items]
Number of business segments			2
Maximum combined ratio indicating underwriting profit			100.00%
Minimum combined ratio indicating underwriting loss			100.00%
Net earned premiums	$ 196,017	$ 173,777	$ 379,136	$ 326,255
Navigators Insurance Company
Segment Reporting Information [Line Items]
Percentage of Navigators Specialty Insurance Company reinsured by Navigators Insurance Company	100.00%		100.00%
Insurance Companies
Segment Reporting Information [Line Items]
Net earned premiums	141,577	114,987	273,125	213,807
Insurance Companies | UK Branch
Segment Reporting Information [Line Items]
Net earned premiums	$ 18,200	$ 25,500	$ 39,100	$ 42,900

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Summary Of Cumulative Amounts Related To Credit Loss Portion Of OTTI Losses On Debt Securities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Beginning balance	$ 3,332	$ 2,239	$ 3,321	$ 2,228
Additions for credit loss impairments recognized in the current period on securities not previously impaired
Additions for credit loss impairments recognized in the current period on securities previously impaired		215	11	226
Reductions for credit loss impairments previously recognized on securities sold during the period
Ending balance	$ 3,332	$ 2,454	$ 3,332	$ 2,454

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Investments - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Investment	Jun. 30, 2011	Dec. 31, 2011
Schedule of Investments [Line Items]
Investment Expenses	$ 924,000	$ 548,000	$ 6,336,000	$ 1,405,000
Number of significant fair value hierarchy classification judgments			0
Investments pledged under a reinsurance treaty	300,000		300,000		300,000
Settlement Agreement
Schedule of Investments [Line Items]
Investment Expenses			4,500,000
State Insurance departments
Schedule of Investments [Line Items]
Fixed maturities, securities deposited	10,000,000		10,000,000		10,200,000
UK Bank
Schedule of Investments [Line Items]
Investment securities deposited	1,200,000		1,200,000
Equity Securities | Maximum
Schedule of Investments [Line Items]
Percentage of fair value over cost	80.00%		80.00%
Non Government backed Securities | Maximum
Schedule of Investments [Line Items]
Percentage of investment	5.00%		5.00%		5.00%
Non Government backed Securities | Investments
Schedule of Investments [Line Items]
Gross Unrealized Loss	$ 400,000		$ 400,000		$ 1,400,000
Mortgage-backed and asset-backed securities
Schedule of Investments [Line Items]
Securities, effective maturities	3.6		3.6

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Fixed Maturities And Equity Securities By Asset Class That Are Measured At Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	$ 2,128,078	$ 1,983,918
Fixed maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,024,429	1,888,069
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign government bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	454,523	336,070
Fixed maturities | States, municipalities and political subdivisions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	426,218	410,836
Fixed maturities | Agency mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	398,310	395,860
Fixed maturities | Residential Mortgage Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	37,805	23,148
Fixed maturities | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	54,416	48,934
Fixed maturities | Commercial mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	209,273	216,034
Fixed maturities | Mortgage-backed and asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	699,804	683,976
Fixed maturities | Corporate bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	443,884	457,187
Equity Securities | Common Stock
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	103,649	95,849
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	277,886	232,474
Level 1 | Fixed maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	174,237	136,625
Level 1 | Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign government bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	174,237	136,625
Level 1 | Equity Securities | Common Stock
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	103,649	95,849
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	1,850,192	1,751,444
Level 2 | Fixed maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	1,850,192	1,751,444
Level 2 | Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign government bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	280,286	199,445
Level 2 | Fixed maturities | States, municipalities and political subdivisions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	426,218	410,836
Level 2 | Fixed maturities | Agency mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	398,310	395,860
Level 2 | Fixed maturities | Residential Mortgage Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	37,805	23,148
Level 2 | Fixed maturities | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	54,416	48,934
Level 2 | Fixed maturities | Commercial mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	209,273	216,034
Level 2 | Fixed maturities | Mortgage-backed and asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	699,804	683,976
Level 2 | Fixed maturities | Corporate bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	$ 443,884	$ 457,187

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Accounting Policies

6 Months Ended

Jun. 30, 2012

Accounting Policies

Note 1. Accounting Policies

The accompanying interim consolidated financial statements are unaudited and reflect all adjustments which, in the opinion of management, are necessary to fairly present the results of The Navigators Group, Inc. and its subsidiaries for the interim periods presented on the basis of United States generally accepted accounting principles (“GAAP” or “U.S. GAAP”). All such adjustments are of a normal recurring nature. All significant intercompany transactions and balances have been eliminated. The preparation of these financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported revenues and expenses during the reporting periods. The results of operations for any interim period are not necessarily indicative of results for the full year. The term “the Company” as used herein is used to mean The Navigators Group, Inc. and its subsidiaries, unless the context otherwise requires. The terms “Parent” or “Parent Company” are used to mean The Navigators Group, Inc. without its subsidiaries. These financial statements should be read in conjunction with the consolidated financial statements and notes contained in the Company’s 2011 Annual Report on Form 10-K. Certain amounts for the prior year have been reclassified to conform to the current year’s presentation.

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Contractual Maturity By Number Of Years Until Maturity for Fixed Maturity Securities With Gross Unrealized Loss (Detail) (Fixed maturities, USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	$ 2,837	$ 10,782
Percent of Total Gross Unrealized Loss	100.00%
Fair Value Amount	187,488	305,121
Percent of Total Fair Value	100.00%
Due in one year or less
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	108
Percent of Total Gross Unrealized Loss	4.00%
Fair Value Amount	11,872
Percent of Total Fair Value	6.00%
Due after one year through five years
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	530
Percent of Total Gross Unrealized Loss	19.00%
Fair Value Amount	77,548
Percent of Total Fair Value	41.00%
Due after five years through ten years
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	305
Percent of Total Gross Unrealized Loss	11.00%
Fair Value Amount	33,587
Percent of Total Fair Value	18.00%
Due After Ten Years
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	111
Percent of Total Gross Unrealized Loss	4.00%
Fair Value Amount	12,478
Percent of Total Fair Value	7.00%
Mortgage- and asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	1,783
Percent of Total Gross Unrealized Loss	62.00%
Fair Value Amount	$ 52,003
Percent of Total Fair Value	28.00%

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Lists of 20 Largest Reinsurers Measured by Reinsurance Recoverable (Detail) (USD $) In Thousands, unless otherwise specified						6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended			6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended				6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011	Jun. 30, 2012 Everest Reinsurance Company		Jun. 30, 2012 Everest Reinsurance Company AMB	Jun. 30, 2012 Everest Reinsurance Company S&P	Jun. 30, 2012 Munich Reinsurance America Inc.		Jun. 30, 2012 Munich Reinsurance America Inc. AMB	Jun. 30, 2012 Munich Reinsurance America Inc. S&P	Jun. 30, 2012 Swiss Reinsurance America Corporation		Jun. 30, 2012 Swiss Reinsurance America Corporation AMB	Jun. 30, 2012 Swiss Reinsurance America Corporation S&P	Jun. 30, 2012 Transatlantic Reinsurance Company		Jun. 30, 2012 Transatlantic Reinsurance Company AMB	Jun. 30, 2012 Transatlantic Reinsurance Company S&P	Jun. 30, 2012 National Indemnity Company		Jun. 30, 2012 National Indemnity Company AMB	Jun. 30, 2012 National Indemnity Company S&P	Jun. 30, 2012 Lloyd's Syndicate #2003		Jun. 30, 2012 Lloyd's Syndicate #2003 AMB	Jun. 30, 2012 Lloyd's Syndicate #2003 S&P	Jun. 30, 2012 Partner Reinsurance Europe		Jun. 30, 2012 Partner Reinsurance Europe AMB	Jun. 30, 2012 Partner Reinsurance Europe S&P	Jun. 30, 2012 Allied World Reinsurance		Jun. 30, 2012 Allied World Reinsurance AMB	Jun. 30, 2012 Allied World Reinsurance S&P	Jun. 30, 2012 Berkley Insurance Company		Jun. 30, 2012 Berkley Insurance Company AMB	Jun. 30, 2012 Berkley Insurance Company S&P	Jun. 30, 2012 General Reinsurance Corporation		Jun. 30, 2012 General Reinsurance Corporation AMB	Jun. 30, 2012 General Reinsurance Corporation S&P	Jun. 30, 2012 Scor Global P&C SE		Jun. 30, 2012 Scor Global P&C SE AMB	Jun. 30, 2012 Scor Global P&C SE S&P	Jun. 30, 2012 Tower Insurance Company		Jun. 30, 2012 Tower Insurance Company AMB	Jun. 30, 2012 Tower Insurance Company S&P	Jun. 30, 2012 Scor Holding (Switzerland) AG		Jun. 30, 2012 Scor Holding (Switzerland) AG AMB	Jun. 30, 2012 Scor Holding (Switzerland) AG S&P	Jun. 30, 2012 Validus Reinsurance Ltd		Jun. 30, 2012 Validus Reinsurance Ltd AMB	Jun. 30, 2012 Validus Reinsurance Ltd S&P	Jun. 30, 2012 Ace Property and Casualty Insurance Company	Jun. 30, 2012 Ace Property and Casualty Insurance Company AMB	Jun. 30, 2012 Ace Property and Casualty Insurance Company S&P	Jun. 30, 2012 Platinum Underwriters Re		Jun. 30, 2012 Platinum Underwriters Re AMB	Jun. 30, 2012 Platinum Underwriters Re S&P	Jun. 30, 2012 Munchener Ruckversicherungs-Gesellschaft		Jun. 30, 2012 Munchener Ruckversicherungs-Gesellschaft AMB	Jun. 30, 2012 Munchener Ruckversicherungs-Gesellschaft S&P	Jun. 30, 2012 Sirius America Insurance Company		Jun. 30, 2012 Sirius America Insurance Company AMB	Jun. 30, 2012 Sirius America Insurance Company S&P	Jun. 30, 2012 AXIS Re Europe		Jun. 30, 2012 AXIS Re Europe AMB	Jun. 30, 2012 AXIS Re Europe S&P	Jun. 30, 2012 Lloyd Syndicate #4000		Jun. 30, 2012 Lloyd Syndicate #4000 AMB	Jun. 30, 2012 Lloyd Syndicate #4000 S&P	Jun. 30, 2012 Insurance Companies		Jun. 30, 2012 All Other
Ceded Credit Risk [Line Items]
Reinsurance Recoverables Unearned Premium	$ 211,089		$ 164,162	$ 16,225				$ 11,108				$ 5,076				$ 15,570				$ 34,376				$ 8,092				$ 9,447				$ 8,108				$ 1,848				$ 675				$ 13,613				$ 10,331				$ 1,323				$ 2,979				$ 1,022			$ 558				$ 390				$ 88				$ 4,252				$ 2,499				$ 147,580		$ 63,509
Reinsurance Recoverables Paid/Unpaid Losses	886,577			75,837				78,824				84,310				73,065				37,716				32,416				31,013				21,459				27,099				26,487				11,644				14,166				20,988				18,560				19,824			18,884				19,037				19,205				13,187				14,341				658,062		228,515
Reinsurance Recoverables Total	1,097,666			92,062				89,932				89,386				88,635				72,092				40,508				40,460				29,567				28,947				27,162				25,257				24,497				22,311				21,539				20,846			19,442				19,427				19,293				17,439				16,840				805,642		292,024
Collateral Held	$ 211,869	[1]		$ 6,179	[1]			$ 222	[1]			$ 6,556	[1]			$ 6,745	[1]			$ 15,981	[1]			$ 8,245	[1]			$ 22,540	[1]			$ 2,405	[1]			$ 596	[1]			$ 890	[1]			$ 9,190	[1]			$ 4,541	[1]			$ 9,069	[1]			$ 9,745	[1]						$ 1,994	[1]			$ 6,719	[1]			$ 335	[1]			$ 5,742	[1]			$ 2,216	[1]			$ 119,910	[1]	$ 91,959	[1]
Rating						A+	A+			A+	AA-			A+	AA-			A	A+			A++	AA+			A	A+			A+	A+			A	A			A+	A+			A++	AA+			A	A+			A-	NR			A	A+			A	A-		A+	AA-			A	A-			A+	AA-			A	A-			A	A+			A	A+

[1] Collateral includes letter of credit, balances payable and other balances held by the Company's Insurance Companies and Lloyd's Operations.

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Reinsurance Ceded - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 Entity	Jun. 30, 2011	Jun. 30, 2012 Entity	Jun. 30, 2011
Reinsurance Recoverable for Insurance Companies by Product Segment [Line Items]
Ceded premiums earned	$ 120.7	$ 82.1	$ 185.8	$ 178.1
Ceded losses incurred	$ 61.7	$ 53.1	$ 123.2	$ 127.7
Percentage of reinsurance recoverable of 20 largest reinsurers			73.40%
Number of largest reinsurers	20		20

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Net Investment Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment Income	$ 16,701	$ 17,977	$ 33,371	$ 36,218
Investment expenses	(924)	(548)	(6,336)	(1,405)
Net investment income	15,777	17,429	27,035	34,813
Fixed maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment Income	15,006	16,844	30,416	34,034
Equity Securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment Income	994	859	1,941	1,642
Short-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment Income	$ 701	$ 274	$ 1,014	$ 542

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Stock-Based Compensation - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2012
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration term (in years)	10 years
Options and Non Performance Based Grants | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period	3 years
Options and Non Performance Based Grants | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period	4 years
Non Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period	5 years
Vesting Percentage of share in year three	33.33%
Vesting Percentage of share in year four	33.33%
Vesting Percentage of share in year five	33.33%
Performance Based Shares Issued in 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period	3 years
Percentage of shares vesting over the period	50.00%
Percentage of remaining shares vesting over the period dependent on compound annual growth book value per share immediately prior to vesting date	50.00%
Performance Based Shares Issued in 2011 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting range	0.00%
Performance Based Shares Issued in 2011 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting range	150.00%
Performance Based Shares Issued Prior to 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period	5 years
Vesting Percentage of share in year three	33.33%
Vesting Percentage of share in year four	33.33%
Vesting Percentage of share in year five	33.33%
Performance Based Shares Issued Prior to 2011 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting range	0.00%
Performance Based Shares Issued Prior to 2011 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting range	150.00%

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Amounts Charged To Expense For Stock-based Compensation (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation	$ 2,075		$ 602		$ 3,321		$ 1,669
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation	1,974		531		3,186		1,479
Directors restricted stock grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation	60	[1]	60	[1]	120	[1]	120	[1]
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation	41		68		15		123
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation			$ (57)	[2]			$ (53)	[2]

[1] Relates to non-employee directors serving on the Parent Company's Board of Directors, all of whom have been elected by the Company's stockholders, as well as non-employee directors serving on NUAL's Board of Directors.

[2] All outstanding stock appreciation rights were exercised during 2011. The Company has no current plans to issue stock appreciation rights under the 2005 Amended and Restated Stock Incentive Plan.

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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating activities:
Net income (loss)	$ 22,803	$ 1,611
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation & amortization	2,040	2,084
Deferred income taxes	(9,800)	(1,047)
Net realized (gains) losses	(6,059)	(1,618)
Net other-than-temporary losses recognized in earnings	650	774
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	3,741	(16,952)
Reserves for losses and loss adjustment expenses	5,845	42,964
Prepaid reinsurance premiums	(46,927)	(19,803)
Unearned premiums	101,292	70,009
Premiums receivable	(119,834)	(84,308)
Deferred policy acquisition costs	(525)	(5,096)
Accrued investment income	413	1,251
Reinsurance balances payable	35,379	19,304
Current income taxes	1,497	(3,685)
Other	24,513	8,897
Net cash provided by (used in) operating activities	15,028	14,385
Fixed maturities
Redemptions and maturities	97,345	95,268
Sales	526,753	461,215
Purchases	(747,421)	(505,278)
Equity securities
Sales	1,600	2,107
Purchases	(3,397)	(5,056)
Change in payable for securities	70,265	17,825
Net change in short-term investments	(39,763)	(29,848)
Purchase of property and equipment	(2,353)	(1,771)
Net cash provided by (used in) investing activities	(96,971)	34,462
Financing activities:
Purchase of treasury stock		(41,442)
Proceeds of stock issued from employee stock purchase plan	313	360
Proceeds of stock issued from exercise of stock options	112	807
Net cash provided by (used in) financing activities	425	(40,275)
Increase (decrease) in cash	(81,518)	8,572
Cash at beginning of year	127,360	31,768
Cash at end of period	45,842	40,340
Supplemental cash information:
Income taxes paid, net	14,188	8,134
Interest paid	4,025	4,025
Issuance of stock to directors	$ 242	$ 210

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Lloyd's Syndicate 1221 - Additional Information (Detail) (Lloyd's Operations, Syndicate 1221) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2012 GBP (£)	Jun. 30, 2011 USD ($)	Jun. 30, 2011 GBP (£)
Supplementary Insurance Information, by Segment [Line Items]
Syndicate 1221's stamp capacity	$ 289	£ 184	$ 280	£ 175
Percentage control of stamp capacity	100.00%	100.00%	100.00%	100.00%
Letters of credit	$ 154.5

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Gross Unrealized Investment Losses (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fixed maturities
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	$ 2,837	$ 10,782
Less than 80% of amortized cost
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	698
Less than 80% of amortized cost | Fixed maturities
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	230
Less than 80% of amortized cost | Equity Securities
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	468
Less than 80% of amortized cost | 6-12 months
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	468
Less than 80% of amortized cost | 6-12 months | Equity Securities
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	468
Less than 80% of amortized cost | > 12 months
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	230
Less than 80% of amortized cost | > 12 months | Fixed maturities
Gain (Loss) on Investments [Line Items]
Gross Unrealized Loss	$ 230

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CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Investments and cash:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2012, $1,935,631; 2011, $1,816,710)	$ 2,024,429	$ 1,888,069
Equity securities, available-for-sale, at fair value (cost: 2012, $74,457; 2011, $73,567)	103,649	95,849
Short-term investments, at cost which approximates fair value	161,983	122,220
Cash	45,842	127,360
Total investments and cash	2,335,903	2,233,498
Premiums receivable	372,379	255,725
Prepaid reinsurance premiums	211,089	164,162
Reinsurance recoverable on paid losses	37,431	43,791
Reinsurance recoverable on unpaid losses and loss adjustment expenses	849,146	845,445
Deferred policy acquisition costs	64,509	63,984
Accrued investment income	14,079	14,492
Goodwill and other intangible assets	6,925	6,869
Current income tax receivable, net	13,032	15,391
Other assets	34,573	26,650
Total assets	3,939,066	3,670,007
Liabilities:
Reserves for losses and loss adjustment expenses	2,088,524	2,082,679
Unearned premiums	633,920	532,628
Reinsurance balances payable	144,078	108,699
Senior Notes	114,348	114,276
Deferred income tax, net	3,120	6,291
Accounts payable and other liabilities	113,268	21,999
Total liabilities	3,097,258	2,866,572
Stockholders' equity:
Preferred stock, $.10 par value, authorized 1,000,000 shares, none issued
Common stock, $.10 par value, authorized 50,000,000 shares, issued 17,522,949 shares for 2012 and 17,467,615 shares for 2011	1,752	1,746
Additional paid-in capital	324,956	322,133
Treasury stock, at cost (3,511,380 shares for 2012 and 2011)	(155,801)	(155,801)
Retained earnings	587,912	565,109
Accumulated other comprehensive income	82,989	70,248
Total stockholders' equity	841,808	803,435
Total liabilities and stockholders' equity	$ 3,939,066	$ 3,670,007

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Change In Net Unrealized Gains And Losses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Gross unrealized gains (losses)					$ 24,349		$ 25,444
Deferred income tax	2,976		8,390		7,796		8,573
Change in unrealized gains (losses) on investments, net of tax	7,604	[1]	16,833	[1]	16,553	[2]	16,871	[2]
Fixed maturities
Gross unrealized gains (losses)					17,439		21,206
Equity Securities
Gross unrealized gains (losses)					$ 6,910		$ 4,238

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 9,039 $ 15,450 Reclassification adjustment for net realized gains (losses) included in net income (1,607 ) 1,326 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 172 57 Change in net unrealized gains (losses) on investments, net of tax $ 7,604 $ 16,833

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 17,643 $ 16,011 Reclassification adjustment for net realized gains (losses) included in net income (1,335 ) 830 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 245 30 Change in net unrealized gains (losses) on investments, net of tax $ 16,553 $ 16,871

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Deferred tax, change in net unrealized gains (losses) on investments	$ 2,976		$ 8,390		$ 7,796		$ 8,573
Deferred tax, change in foreign currency translation gains (losses)	452		(4)		1,851		359
Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	9,039		15,450		17,643		16,011
Reclassification adjustment for net realized gains (losses) included in net income	(1,607)		1,326		(1,335)		830
Reclassification adjustment for other-than-temporary impairment losses recognized in net income	172		57		245		30
Change in net unrealized gains (losses) on investments, net of tax	$ 7,604	[1]	$ 16,833	[1]	$ 16,553	[2]	$ 16,871	[2]

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 9,039 $ 15,450 Reclassification adjustment for net realized gains (losses) included in net income (1,607 ) 1,326 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 172 57 Change in net unrealized gains (losses) on investments, net of tax $ 7,604 $ 16,833

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 17,643 $ 16,011 Reclassification adjustment for net realized gains (losses) included in net income (1,335 ) 830 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 245 30 Change in net unrealized gains (losses) on investments, net of tax $ 16,553 $ 16,871

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Cash And Investments Including Other-Than-Temporarily Impaired ("OTTI") Securities Recognized within Other Comprehensive Income ("OCI") (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Gain (Loss) on Investments [Line Items]
Total investments and cash	$ 2,335,903	$ 2,233,498
Gross Unrealized Gains	121,344	105,381
Gross Unrealized Losses	(3,354)	(11,740)
Amortized Cost	2,217,913	2,139,857
OTTI Recognized in OCI	(887)	(1,682)
Fixed maturities
Gain (Loss) on Investments [Line Items]
Total investments and cash	2,024,429	1,888,069
Gross Unrealized Gains	91,635	82,141
Gross Unrealized Losses	(2,837)	(10,782)
Amortized Cost	1,935,631	1,816,710
OTTI Recognized in OCI	(887)	(1,682)
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign government bonds
Gain (Loss) on Investments [Line Items]
Total investments and cash	454,523	336,070
Gross Unrealized Gains	10,330	8,979
Gross Unrealized Losses	(160)	(383)
Amortized Cost	444,353	327,474
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Total investments and cash	426,218	410,836
Gross Unrealized Gains	29,960	28,887
Gross Unrealized Losses	(115)	(108)
Amortized Cost	396,373	382,057
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	398,310	395,860
Gross Unrealized Gains	17,393	17,321
Gross Unrealized Losses	(44)	(3)
Amortized Cost	380,961	378,542
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	37,805	23,148
Gross Unrealized Gains	44	8
Gross Unrealized Losses	(1,651)	(2,848)
Amortized Cost	39,412	25,988
OTTI Recognized in OCI	(887)	(1,682)
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	54,416	48,934
Gross Unrealized Gains	933	695
Gross Unrealized Losses	(33)	(75)
Amortized Cost	53,516	48,314
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	209,273	216,034
Gross Unrealized Gains	14,456	10,508
Gross Unrealized Losses	(55)	(593)
Amortized Cost	194,872	206,119
Fixed maturities | Mortgage-backed and asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	699,804	683,976
Gross Unrealized Gains	32,826	28,532
Gross Unrealized Losses	(1,783)	(3,519)
Amortized Cost	668,761	658,963
OTTI Recognized in OCI	(887)	(1,682)
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Total investments and cash	443,884	457,187
Gross Unrealized Gains	18,519	15,743
Gross Unrealized Losses	(779)	(6,772)
Amortized Cost	426,144	448,216
Equity Securities | Common Stock
Gain (Loss) on Investments [Line Items]
Total investments and cash	103,649	95,849
Gross Unrealized Gains	29,709	23,240
Gross Unrealized Losses	(517)	(958)
Amortized Cost	74,457	73,567
Short-term investments
Gain (Loss) on Investments [Line Items]
Total investments and cash	161,983	122,220
Amortized Cost	161,983	122,220
Cash
Gain (Loss) on Investments [Line Items]
Total investments and cash	45,842	127,360
Amortized Cost	$ 45,842	$ 127,360

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Amounts Charged to Expense for Stock-based Compensation

The amounts charged to expense for stock-based compensation for the three and six months ended June 30, 2012 and 2011 are presented in the following table:

	Three Months Ended June 30,					Six Months Ended June 30,
In thousands	2012		2011			2012		2011
Restricted stock units	$	1,974	$	531		$	3,186	$	1,479
Directors restricted stock grants (1)		60		60			120		120
Employee stock purchase plan		41		68			15		123
Stock appreciation rights (2)		—		(57	)		—		(53	)
Stock options		—		—			—		—
Total stock-based compensation	$	2,075	$	602		$	3,321	$	1,669

(1) —  Relates to non-employee directors serving on the Parent Company's Board of Directors, all of whom have been elected by the Company's stockholders, as well as non-employee directors serving on NUAL's Board of Directors.

(2) —  All outstanding stock appreciation rights were exercised during 2011. The Company has no current plans to issue stock appreciation rights under the 2005 Amended and Restated Stock Incentive Plan.

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Scheduled Maturity Dates For Fixed Maturity Securities By Number Of Years Until Maturity (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value
Due in one year or less	$ 56,876
Due after one year through five years	658,027
Due after five years through ten years	379,158
Due after ten years	230,564
Mortgage- and asset-backed securities	699,804
Total	2,024,429	1,888,069
Amortized Cost
Due in one year or less	56,483
Due after one year through five years	641,379
Due after five years through ten years	353,733
Due after ten years	215,275
Mortgage- and asset-backed securities	668,761
Total	$ 1,935,631	$ 1,816,710

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Recent Accounting Pronouncements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in capitalized acquisition costs resulting from adoption of ASU 2010-26	$ 0.8	$ 1.7

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2011	$ 803,435	$ 1,746	$ 322,133	$ (155,801)	$ 565,109	$ 70,248
Beginning Balance (in shares) at Dec. 31, 2011		17,467,615		3,511,380
Net income	22,803				22,803
Changes in comprehensive income:
Change in net unrealized gain (loss) on investments	16,037					16,037
Change in net non-credit other-than-temporary impairment losses	516					516
Change in foreign currency translation gain (loss)	(3,812)					(3,812)
Other comprehensive income (loss)	12,741					12,741
Shares issued under stock plan (in shares)		55,334
Shares issued under stock plan	(357)	6	(363)
Share-based compensation	3,186		3,186
Ending Balance at Jun. 30, 2012	$ 841,808	$ 1,752	$ 324,956	$ (155,801)	$ 587,912	$ 82,989
Ending Balance (in shares) at Jun. 30, 2012		17,522,949		3,511,380

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fixed maturities, available-for-sale, amortized cost	$ 1,935,631	$ 1,816,710
Equity securities, available-for-sale, cost	$ 74,457	$ 73,567
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, authorized shares	1,000,000	1,000,000
Preferred stock, issued shares	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, authorized shares	50,000,000	50,000,000
Common stock, issued shares	17,522,949	17,467,615
Treasury stock, shares	3,511,380	3,511,380

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies

Note 9. Commitments and Contingencies

In the ordinary course of conducting business, the Company’s subsidiaries are involved in various legal proceedings, either indirectly as insurers for parties or directly as defendants. Most of these proceedings consist of claims litigation involving the Company’s subsidiaries as either (a) liability insurers defending or providing indemnity for third party claims brought against insureds or (b) insurers defending first party coverage claims brought against them. The Company accounts for such activity through the establishment of unpaid loss and loss adjustment reserves. The Company’s management believes that the ultimate liability, if any, with respect to such ordinary-course claims litigation, after consideration of provisions made for potential losses and cost of defense, will not be material to the Company’s consolidated financial condition, results of operations or cash flows.

The Company’s subsidiaries are also from time to time involved with other legal actions, some of which assert claims for substantial amounts. These actions include claims asserting extra-contractual obligations, such as claims involving allegations of bad faith in the handling of claims or the underwriting of policies. In general, the Company believes it has valid defenses to these cases. The Company’s management expects that the ultimate liability, if any, with respect to future extra-contractual matters will not be material to its consolidated financial position, results of operations or cash flows. Nonetheless, given the large or indeterminate amounts sought in certain of these matters, and the inherent unpredictability of litigation, an adverse outcome in such matters could, from time to time, have a material adverse outcome on the Company’s consolidated results of operations or cash flows in a particular fiscal quarter or year.

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Document and Entity Information	6 Months Ended
	Jun. 30, 2012	Jul. 24, 2012
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Trading Symbol	NAVG
Entity Registrant Name	Navigators Group Inc
Entity Central Index Key	0000793547
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		14,012,320

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Investments

6 Months Ended

Jun. 30, 2012

Investments

Note 10. Investments

The following tables set forth the Company’s cash and investments as of June 30, 2012 and December 31, 2011. The tables below includes other-than-temporarily impaired (“OTTI”) securities recognized within other comprehensive income (“OCI”).

	June 30, 2012
			Gross		Gross					OTTI
			Unrealized		Unrealized			Amortized		Recognized
In thousands	Fair Value		Gains		Losses			Cost		in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	454,523	$	10,330	$	(160	)	$	444,353	$	—
States, municipalities and political subdivisions		426,218		29,960		(115	)		396,373		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		398,310		17,393		(44	)		380,961		—
Residential mortgage obligations		37,805		44		(1,651	)		39,412		(887	)
Asset-backed securities		54,416		933		(33	)		53,516		—
Commercial mortgage-backed securities		209,273		14,456		(55	)		194,872		—
Subtotal	$	699,804	$	32,826	$	(1,783	)	$	668,761	$	(887	)
Corporate bonds		443,884		18,519		(779	)		426,144		—
Total fixed maturities	$	2,024,429	$	91,635	$	(2,837	)	$	1,935,631	$	(887	)
Equity securities—common stocks		103,649		29,709		(517	)		74,457		—
Short-term investments		161,983		—		—			161,983		—
Cash		45,842		—		—			45,842		—
Total	$	2,335,903	$	121,344	$	(3,354	)	$	2,217,913	$	(887	)

	December 31, 2011
			Gross		Gross					OTTI
			Unrealized		Unrealized			Amortized		Recognized
In thousands	Fair Value		Gains		Losses			Cost		in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	336,070	$	8,979	$	(383	)	$	327,474	$	—
States, municipalities and political subdivisions		410,836		28,887		(108	)		382,057		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		395,860		17,321		(3	)		378,542		—
Residential mortgage obligations		23,148		8		(2,848	)		25,988		(1,682	)
Asset-backed securities		48,934		695		(75	)		48,314		—
Commercial mortgage-backed securities		216,034		10,508		(593	)		206,119		—
Subtotal	$	683,976	$	28,532	$	(3,519	)	$	658,963	$	(1,682	)
Corporate bonds		457,187		15,743		(6,772	)		448,216		—
Total fixed maturities	$	1,888,069	$	82,141	$	(10,782	)	$	1,816,710	$	(1,682	)
Equity securities—common stocks		95,849		23,240		(958	)		73,567		—
Short-term investments		122,220		—		—			122,220		—
Cash		127,360		—		—			127,360
Total	$	2,233,498	$	105,381	$	(11,740	)	$	2,139,857	$	(1,682	)

The fair value of the Company’s investment portfolio may fluctuate significantly in response to various factors such as changes in interest rates, investment quality ratings, equity prices, foreign exchange rates and credit spreads. The Company does not have the intent to sell nor is it more likely than not that it will have to sell debt securities in unrealized loss positions that are not other-than-temporarily impaired before recovery. The Company may realize investment losses to the extent its liquidity needs require the disposition of fixed maturity securities in unfavorable interest rate, liquidity or credit spread environments. Significant changes in the factors the Company considers when evaluating investment for impairment losses could result in a significant change in impairment losses reported in the consolidated financial statements.

The contractual maturity dates for fixed maturity securities categorized by the number of years until maturity as of June 30, 2012 are shown in the following table:

	June 30, 2012
			Amortized
In thousands	Fair Value		Cost
Due in one year or less	$	56,876	$	56,483
Due after one year through five years		658,027		641,379
Due after five years through ten years		379,158		353,733
Due after ten years		230,564		215,275
Mortgage- and asset-backed securities		699,804		668,761
Total	$	2,024,429	$	1,935,631

Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Due to the periodic repayment of principal, the mortgage-backed and asset-backed securities are estimated to have an effective maturity of approximately 3.6 years.

The following table shows the amount and percentage of the Company’s fixed maturities as of June 30, 2012 by S&P credit rating or, if an S&P rating is not available, the equivalent Moody’s Investor Services (“Moody’s”) rating. The table includes fixed maturities at fair value, and the total rating is the weighted average quality rating.

				Percent of
In thousands	Rating	Fair Value		Total
Rating description:
Extremely strong	AAA	$	341,094		17	%
Very strong	AA		1,150,879		56	%
Strong	A		381,490		19	%
Adequate	BBB		132,820		7	%
Speculative	BB & Below		14,282		1	%
Not rated	NR		3,864		0	%
Total		$	2,024,429		100	%

The following table summarizes all securities in a gross unrealized loss position as of June 30, 2012 and December 31, 2011, showing the aggregate fair value and gross unrealized loss by the length of time those securities had continuously been in a gross unrealized loss position as well as the relevant number of securities.

	June 30, 2012						December 31, 2011
In thousands, except # of securities	Number of Securities		Fair Value		Gross Unrealized Loss		Number of Securities		Fair Value		Gross Unrealized Loss
Fixed maturities:
U.S. Government Treasury bonds,agency bonds, and foreign government bonds
0-6 months		13	$	55,371	$	71		7	$	58,587	$	98
7-12 months		—		—		—		—		—		—
> 12 months		1		4,580		89		2		6,883		285
Subtotal		14	$	59,951	$	160		9	$	65,470	$	383
States, municipalities and political subdivisions
0-6 months		5	$	3,805	$	48		7	$	5,894	$	72
7-12 months		5		3,369		46		1		216		1
> 12 months		2		1,580		21		5		2,420		35
Subtotal		12	$	8,754	$	115		13	$	8,530	$	108
Agency mortgage-backed securities
0-6 months		2	$	1,683	$	44		3	$	5,087	$	3
7-12 months		—		—		—		—		—		—
> 12 months		—		—		—		—		—		—
Subtotal		2	$	1,683	$	44		3	$	5,087	$	3
Residential mortgage obligations
0-6 months		1	$	18,163	$	56		6	$	6,672	$	184
7-12 months		7		2,673		88		7		5,250		313
> 12 months		48		12,151		1,507		47		10,749		2,351
Subtotal		56	$	32,987	$	1,651		60	$	22,671	$	2,848
Asset-backed securities
0-6 months		2	$	7,045	$	4		2	$	4,933	$	12
7-12 months		1		369		1		5		6,645		63
> 12 months		5		4,610		28		1		2		—
Subtotal		8	$	12,024	$	33		8	$	11,580	$	75
Commercial mortgage-backed securities
0-6 months		3	$	520	$	1		6	$	5,465	$	29
7-12 months		4		3,754		43		3		6,840		550
> 12 months		4		1,035		11		3		1,503		14
Subtotal		11	$	5,309	$	55		12	$	13,808	$	593
Corporate bonds
0-6 months		3	$	18,246	$	47		52	$	135,516	$	4,539
7-12 months		16		35,128		443		18		27,561		1,457
> 12 months		10		13,406		289		8		14,898		776
Subtotal		29	$	66,780	$	779		78	$	177,975	$	6,772
Total fixed maturities		132	$	187,488	$	2,837		183	$	305,121	$	10,782
Equity securities—common stocks
0-6 months		1	$	1,579	$	469		4	$	3,320	$	587
7-12 months		1		1,540		48		1		1,629		371
> 12 months		—		—		—		—		—		—
Total equity securities		2	$	3,119	$	517		5	$	4,949	$	958

As of June 30, 2012 and December 31, 2011, the largest single unrealized loss by a non-government backed issuer in the investment portfolio was $0.4 million and $1.4 million, respectively.

The Company analyzes the unrealized losses quarterly to determine if any are other-than-temporary. The above unrealized losses have been determined to be temporary based on our analysis.

For debt securities, when assessing whether the amortized cost basis of the security will be recovered, the Company compares the present value of cash flows expected to be collected in relation to the current book value. Any shortfalls of the present value of the cash flows expected to be collected to the amortized cost basis is considered the credit loss portion of OTTI losses and is recognized in earnings. All non-credit losses are recognized as changes in OTTI losses within OCI.

To determine whether the unrealized loss on structured securities is other-than-temporary, the Company analyzes the projections provided by its investment managers with respect to an expected principal loss under a range of scenarios and utilizes the most likely outcomes. The analysis relies on actual collateral performance measures such as default rate, prepayment rate and loss severity. These assumptions are applied throughout the remaining term of the deal, incorporating the transaction structure and priority of payments, to generate loss adjusted cash flows. Results of the analysis will indicate whether the security is expected ultimately to incur a loss or whether there is a material impact on yield due to either a projected loss or a change in cash flow timing. A break even default rate is also calculated. A comparison of the break even default rate to the actual default rate provides an indication of the level of cushion or coverage to the first dollar principal loss. The analysis applies the stated assumptions throughout the remaining term of the transaction to forecast cash flows, which are then applied through the transaction structure to determine whether there is a loss to the security. For securities in which a tranche loss is present, and the net present value of loss adjusted cash flows is less than book value, impairment is recognized. The output data also includes a number of additional metrics such as average life remaining, original and current credit support, over 60 day delinquency and security rating.

The significant inputs used to measure the amount of credit loss recognized in earnings were actual delinquency rates, default probability assumptions, severity assumptions and prepayment assumptions. Projected losses are a function of both loss severity and probability of default. Default probability and severity assumptions differ based on property type, vintage and the stress of the collateral. The Company does not intend to sell any of these securities and it is more likely than not that it will not be required to sell these securities before the recovery of the amortized cost basis.

For equity securities, in general, the Company focuses its attention on those securities with a fair value less than 80% of their cost for six or more consecutive months. If warranted as the result of conditions relating to a particular security, the Company will focus on a significant decline in fair value regardless of the time period involved. Factors considered in evaluating potential impairment include, but are not limited to, the current fair value as compared to cost of the security, the length of time the investment has been below cost and by how much the investment is below cost. If an equity security is deemed to be other-than-temporarily impaired, the cost is written down to fair value with the loss recognized in earnings.

For equity securities, the Company also considers its intent to hold securities as part of the process of evaluating whether a decline in fair value represents an other-than-temporary decline in value. For fixed maturity securities, the Company considers its intent to sell a security and whether it is more likely than not that the Company will be required to sell a security before the anticipated recovery as part of the process of evaluating whether a security’s unrealized loss represents an other-than-temporary decline. The Company’s ability to hold such securities is supported by sufficient cash flow from its operations and from maturities within its investment portfolio in order to meet its claims payment and other disbursement obligations arising from its underwriting operations without selling such investments. With respect to securities where the decline in value is determined to be temporary and the security’s value is not written down, a subsequent decision may be made to sell that security and realize a loss. Subsequent decisions on security sales are made within the context of overall risk monitoring, changing information and market conditions.

The following table summarizes the gross unrealized investment losses as of June 30, 2012 by the length of time that the fair value continues to be less than 80% of amortized cost:

	June 30, 2012
	Fixed		Equity
In thousands	Maturities		Securities		Total
Less than three months	$	—	$	—	$	—
Longer than three months and less than six months		—		468		468
Longer than six months and less than twelve months		—		—		—
Longer than twelve months		230		—		230
Total	$	230	$	468	$	698

The table below summarizes the Company’s activity related to OTTI losses for the periods indicated:

	Three Months Ended June 30,								Six Months Ended June 30,
	2012				2011				2012				2011
In thousands, except # of securities	Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount
Total OTTI losses:
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		—		—		6		516		1		54		7		549
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		2		496		1		317		3		639		1		547
Total		2	$	496		7	$	833		4	$	693		8	$	1,096
Less: Portion of loss in accumulated other comprehensive income (loss):
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				301				43				322
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	—			$	301			$	43			$	322
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				215				11				227
Asset-backed securities				—				—				—				—
Equities				496				317				639				547
Total			$	496			$	532			$	650			$	774

The following table summarizes the cumulative amounts related to the Company’s credit loss portion of the OTTI losses on debt securities for the three and six months ended June 30, 2012 and 2011. The Company does not intend to sell and it is more likely than not that it will not be required to sell, the securities prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in other comprehensive income:

	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2012		2011		2012		2011
Beginning balance	$	3,332	$	2,239	$	3,321	$	2,228
Additions for credit loss impairments recognized in the current period on securities not previously impaired		—		—		—		—
Additions for credit loss impairments recognized in the current period on securities previously impaired		—		215		11		226
Reductions for credit loss impairments previously recognized on securities sold during the period		—		—		—		—
Ending balance	$	3,332	$	2,454	$	3,332	$	2,454

The contractual maturity dates for fixed maturity securities categorized by the number of years until maturity, with a gross unrealized loss as of June 30, 2012 is presented in the following table:

	June 30, 2012
	Gross Unrealized Losses					Fair Value
			Percent of					Percent of
In thousands	Amount		Total			Amount		Total
Due in one year or less	$	108		4	%	$	11,872		6	%
Due after one year through five years		530		19	%		77,548		41	%
Due after five years through ten years		305		11	%		33,587		18	%
Due after ten years		111		4	%		12,478		7	%
Mortgage- and asset-backed securities		1,783		62	%		52,003		28	%
Total	$	2,837		100	%	$	187,488		100	%

The Company’s net investment income was derived from the following sources:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities	$	15,006		$	16,844		$	30,416		$	34,034
Equity securities		994			859			1,941			1,642
Short-term investments		701			274			1,014			542
Total investment income		16,701			17,977			33,371			36,218
Investment expenses		(924	)		(548	)		(6,336	)		(1,405	)
Net investment income	$	15,777		$	17,429		$	27,035		$	34,813

Investment expenses for the six months ended June 30, 2012 include $4.5 million of interest expense related to the settlement of a dispute with Equitas over foregone interest on amounts that were due on certain reinsurance contracts. In the dispute Equitas alleged that we failed to make timely payments to them under certain reinsurance agreements in connection with subrogation recoveries received by the Company with respect to several catastrophe losses that occurred in the late 1980’s and early 1990’s.

The change in net unrealized gains and losses, inclusive of the change in the non-credit portion of OTTI losses, consisted of:

	Six Months Ended June 30,
In thousands	2012		2011
Fixed maturities	$	17,439	$	21,206
Equity securities		6,910		4,238
Gross unrealized gains (losses)		24,349		25,444
Deferred income tax		7,796		8,573
Change in unrealized gains (losses), net	$	16,553	$	16,871

Realized gains and losses, excluding net OTTI losses recognized in earnings, for the periods indicated were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities:
Gains	$	4,717		$	4,443		$	7,858		$	7,312
Losses		(231	)		(2,277	)		(1,530	)		(6,534	)
Fixed maturities, net	$	4,486		$	2,166		$	6,328		$	778
Equity securities:
Gains	$	204		$	840		$	204		$	840
Losses		(473	)		—			(473	)		—
Equity securities, net	$	(269	)	$	840		$	(269	)	$	840
Net realized gains (losses)	$	4,217		$	3,006		$	6,059		$	1,618

The following tables present, for each of the fair value hierarchy levels as defined by the accounting guidance for fair value measurements and described below, the Company’s fixed maturities and equity securities by asset class that are measured at fair value on a recurring basis as of June 30, 2012 and December 31, 2011:

	June 30, 2012
In thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	174,237	$	280,286	$	—	$	454,523
States, municipalities and political subdivisions		—		426,218		—		426,218
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		398,310		—		398,310
Residential mortgage obligations		—		37,805		—		37,805
Asset-backed securities		—		54,416		—		54,416
Commercial mortgage-backed securities		—		209,273		—		209,273
Subtotal	$	—	$	699,804	$	—	$	699,804
Corporate bonds		—		443,884		—		443,884
Total fixed maturities	$	174,237	$	1,850,192	$	—	$	2,024,429
Equity securities—common stocks		103,649		—		—		103,649
Total	$	277,886	$	1,850,192	$	—	$	2,128,078

	December 31, 2011
In thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	136,625	$	199,445	$	—	$	336,070
States, municipalities and political subdivisions		—		410,836		—		410,836
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		395,860		—		395,860
Residential mortgage obligations		—		23,148		—		23,148
Asset-backed securities		—		48,934		—		48,934
Commercial mortgage-backed securities		—		216,034		—		216,034
Subtotal	$	—	$	683,976	$	—	$	683,976
Corporate bonds		—		457,187		—		457,187
Total fixed maturities	$	136,625	$	1,751,444	$	—	$	1,888,069
Equity securities—common stocks		95,849		—		—		95,849
Total	$	232,474	$	1,751,444	$	—	$	1,983,918

The fair value of financial instruments is determined based on the following fair value hierarchy:

Level 1 – Quoted prices for identical instruments in active markets. Examples are listed equity and fixed income securities traded on an exchange. Treasury securities would generally be considered Level 1.

Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Examples are asset-backed and mortgage-backed securities that are similar to other asset-backed or mortgage-backed securities observed in the market.

Level 3 – Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. An example would be a private placement with minimal liquidity.

The Company did not have any transfers between Levels 1 and 2 as of June 30, 2012 and December 31, 2011.

There were no significant judgments made in classifying instruments in the fair value hierarchy.

As of June 30, 2012, the Company did not have any Level 3 assets. Any pricing where the input is based solely on a broker price is deemed to be a Level 3 price.

The following tables present a reconciliation of the beginning and ending balances for all investments measured at fair value using Level 3 inputs during the six months ended June 30, 2011:

	For The Six Months Ended June 30, 2011
In thousands	Beginning Balance		Realized Gains (Losses)		Unrealized Gains (Losses)			Purchases			Sales		Settlements		Transfers into Level 3		Transfers out of Level 3			Ending Balance
Assets:
Commercial	$	1,837	$	—	$	(26	)	$	(4	)	$	—	$	—	$	—	$	(1,807	)	$	—
Total assets	$	1,837	$	—	$	(26	)	$	(4	)	$	—	$	—	$	—	$	(1,807	)	$	—

As of June 30, 2012 and December 31, 2011, fixed maturities with amortized values of $10.0 million and $10.2 million, respectively, were on deposit with various state insurance departments. In addition, as of June 30, 2012, investments of $1.2 million were on deposit with a U.K. bank to comply with the regulatory requirements of the Financial Services Authority for Navigators Insurance Company’s U.K. Branch. In addition, as of June 30, 2012 and December 31, 2011, $0.3 million of investments were pledged as security under a reinsurance treaty.

As of June 30, 2012 and December 31, 2011, the Company did not have a concentration of greater than 5% of invested assets in a single non-U.S. government-backed issuer.

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CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Gross written premiums	$ 322,987	$ 278,714	$ 666,136	$ 574,997
Revenues:
Net written premiums	190,252	183,363	433,297	376,439
Change in unearned premiums	5,765	(9,586)	(54,161)	(50,184)
Net earned premiums	196,017	173,777	379,136	326,255
Net investment income	15,777	17,429	27,035	34,813
Total other-than-temporary impairment losses	(496)	(833)	(693)	(1,096)
Portion of loss recognized in other comprehensive income (pretax)		301	43	322
Net other-than-temporary impairment losses recognized in earnings	(496)	(532)	(650)	(774)
Net realized gains (losses)	4,217	3,006	6,059	1,618
Other income (expense)	387	573	1,298	1,564
Total revenues	215,902	194,253	412,878	363,476
Expenses:
Net losses and loss adjustment expenses	123,407	113,863	241,392	230,651
Commission expenses	29,503	28,030	58,953	54,230
Other operating expenses	39,819	35,777	76,126	72,352
Interest expense	2,049	2,047	4,098	4,093
Total expenses	194,778	179,717	380,569	361,326
Income (loss) before income taxes	21,124	14,536	32,309	2,150
Income tax expense (benefit)	6,225	5,032	9,506	539
Net income (loss)	$ 14,899	$ 9,504	$ 22,803	$ 1,611
Net income (loss) per common share:
Basic	$ 1.06	$ 0.62	$ 1.63	$ 0.10
Diluted	$ 1.05	$ 0.60	$ 1.60	$ 0.10
Average common shares outstanding:
Basic	14,006,361	15,372,670	13,992,901	15,554,670
Diluted	14,208,759	15,725,850	14,245,947	15,943,804

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Reinsurance Ceded

6 Months Ended

Jun. 30, 2012

Reinsurance Ceded

Note 4. Reinsurance Ceded

The Company’s ceded earned premiums were $120.7 million and $82.1 million for the three months ended June 30, 2012 and 2011 and $185.8 million and $178.1 million for the six months ended June 30, 2012 and 2011, respectively. The Company’s ceded incurred losses were $61.7 million and $53.1 million for the three months ended June 30, 2012 and 2011 and were $123.2 million and $127.7 million for the six months ended June 30, 2012 and 2011, respectively.

The following table lists the Company’s 20 largest reinsurers measured by the amount of reinsurance recoverable for ceded losses and LAE and ceded unearned premium (constituting approximately 73.4% of the total recoverable), together with the reinsurance recoverable and collateral as of June 30, 2012, and the reinsurers’ ratings from the A.M. Best Company (“AMB”) or Standard & Poor’s (“S&P”):

	Reinsurance Recoverables
	Unearned		Paid/Unpaid				Collateral
In thousands	Premium		Losses		Total		Held(1)		AMB		S&P
Everest Reinsurance Company	$	16,225	$	75,837	$	92,062	$	6,179		A+		A+
Munich Reinsurance America Inc.		11,108		78,824		89,932		222		A+		AA-
Swiss Reinsurance America Corporation		5,076		84,310		89,386		6,556		A+		AA-
Transatlantic Reinsurance Company		15,570		73,065		88,635		6,745		A		A+
National Indemnity Company		34,376		37,716		72,092		15,981		A++		AA+
Lloyd’s Syndicate #2003		8,092		32,416		40,508		8,245		A		A+
Partner Reinsurance Europe		9,447		31,013		40,460		22,540		A+		A+
Allied World Reinsurance		8,108		21,459		29,567		2,405		A		A
Berkley Insurance Company		1,848		27,099		28,947		596		A+		A+
General Reinsurance Corporation		675		26,487		27,162		890		A++		AA+
Scor Global P&C SE		13,613		11,644		25,257		9,190		A		A+
Tower Insurance Company		10,331		14,166		24,497		4,541		A-		NR
Scor Holding (Switzerland) AG		1,323		20,988		22,311		9,069		A		A+
Validus Reinsurance Ltd.		2,979		18,560		21,539		9,745		A		A-
Ace Property and Casualty Insurance Company		1,022		19,824		20,846		—		A+		AA-
Platinum Underwriters Re		558		18,884		19,442		1,994		A		A-
Munchener Ruckversicherungs-Gesellschaft		390		19,037		19,427		6,719		A+		AA-
Sirius America Insurance Company		88		19,205		19,293		335		A		A-
AXIS Re Europe		4,252		13,187		17,439		5,742		A		A+
Lloyd’s Syndicate #4000		2,499		14,341		16,840		2,216		A		A+
Top 20 Total	$	147,580	$	658,062	$	805,642	$	119,910
All Others		63,509		228,515		292,024		91,959
Total	$	211,089	$	886,577	$	1,097,666	$	211,869

(1) — Collateral includes letter of credit, balances payable and other balances held by the Company’s Insurance Companies and Lloyd’s Operations.

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Segment Information

6 Months Ended

Jun. 30, 2012

Segment Information

Note 3. Segment Information

The Company classifies its business into two underwriting segments consisting of the Insurance Companies segment (“Insurance Companies”) and the Lloyd’s Operations segment (“Lloyd’s Operations”), which are separately managed, and a Corporate segment (“Corporate”). Segment data for each of the two underwriting segments include allocations of the operating expenses of the wholly-owned underwriting management companies and the Parent Company’s operating expenses and related income tax amounts. The Corporate segment consists of the Parent Company’s investment income and interest expense and the related tax effect.

The Company evaluates the performance of each underwriting segment based on its underwriting and GAAP results. The Insurance Companies’ and the Lloyd’s Operations’ results are measured by taking into account net earned premiums, net losses and loss adjustment expenses (“LAE”), commission expenses, other operating expenses and other income (expense). Each segment maintains its own investments on which it earns income and realizes capital gains or losses. The Company’s underwriting performance is evaluated separately from the performance of its investment portfolios.

The Insurance Companies consist of Navigators Insurance Company, including its branch located in the United Kingdom (the “U.K. Branch”), and its wholly-owned subsidiary, Navigators Specialty Insurance Company (“Navigators Specialty”). They are primarily engaged in underwriting marine insurance and related lines of business, professional liability insurance and specialty lines of business, including contractors general liability insurance, commercial umbrella and primary and excess casualty businesses. Navigators Specialty underwrites specialty and professional liability insurance on an excess and surplus lines basis. Navigators Specialty is 100% reinsured by Navigators Insurance Company.

The Lloyd’s Operations primarily underwrite marine and related lines of business along with offshore energy, professional liability insurance and construction coverages for onshore energy business at Lloyd’s of London (“Lloyd’s”) through Syndicate 1221. The Lloyd’s Operations includes Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s underwriting agency which manages Syndicate 1221.

Navigators Management Company, Inc. (“NMC”) is a wholly-owned underwriting management company that produces, manages and underwrites insurance and reinsurance, and provides corporate services for the Company. The operating results for NMC are allocated to both the Insurance Companies and Lloyd’s Operations as appropriate.

The Insurance Companies’ and the Lloyd’s Operations’ underwriting results are measured based on underwriting profit or loss and the related combined ratio, which are both non-GAAP measures of underwriting profitability. Underwriting profit or loss is calculated from net earned premiums, less the sum of net losses and LAE, commission expenses, other operating expenses and other income (expense). The combined ratio is derived by dividing the sum of net losses and LAE, commission expenses, other operating expenses and other income (expense) by net earned premiums. A combined ratio of less than 100% indicates an underwriting profit and greater than 100% indicates an underwriting loss.

Financial data by segment for the three and six months ended June 30, 2012 and 2011 were as follows:

	Three Months Ended June 30, 2012
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	214,064		$	108,923		$	—		$	322,987
Net written premiums		134,065			56,187			—			190,252
Net earned premiums		141,577			54,440			—			196,017
Net losses and loss adjustment expenses		(100,003	)		(23,404	)		—			(123,407	)
Commission expenses		(21,117	)		(8,938	)		552			(29,503	)
Other operating expenses		(28,914	)		(10,905	)		—			(39,819	)
Other income (expense)		879			60			(552	)		387
Underwriting profit (loss)	$	(7,578	)	$	11,253		$	—		$	3,675
Net investment income		13,286			2,454			37			15,777
Net realized gains (losses)		2,325			1,396			—			3,721
Interest expense		—			—			(2,049	)		(2,049	)
Income (loss) before income taxes	$	8,033		$	15,103		$	(2,012	)	$	21,124
Income tax expense (benefit)		2,101			5,207			(1,083	)		6,225
Net income (loss)	$	5,932		$	9,896		$	(929	)	$	14,899
Identifiable assets	$	2,933,334		$	967,862		$	37,870		$	3,939,066
Losses and loss adjustment expenses ratio		70.6	%		43.0	%					63.0	%
Commission expense ratio		14.9	%		16.4	%					15.1	%
Other operating expense ratio (2)		19.9	%		19.9	%					20.0	%
Combined ratio		105.4	%		79.3	%					98.1	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

	Three Months Ended June 30, 2011
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	186,767		$	91,947		$	—		$	278,714
Net written premiums		123,204			60,159			—			183,363
Net earned premiums		114,987			58,790			—			173,777
Net losses and loss adjustment expenses		(77,330	)		(36,533	)		—			(113,863	)
Commission expenses		(16,402	)		(12,042	)		414			(28,030	)
Other operating expenses		(26,516	)		(9,261	)		—			(35,777	)
Other income (expense)		626			361			(414	)		573
Underwriting profit (loss)	$	(4,635	)	$	1,315		$	—		$	(3,320	)
Net investment income		14,989			2,320			120			17,429
Net realized gains (losses)		3,100			(798	)		172			2,474
Interest expense		—			—			(2,047	)		(2,047	)
Income (loss) before income taxes	$	13,454		$	2,837		$	(1,755	)	$	14,536
Income tax expense (benefit)		4,617			1,029			(614	)		5,032
Net income (loss)	$	8,837		$	1,808		$	(1,141	)	$	9,504
Identifiable assets	$	2,716,634		$	898,895		$	40,380		$	3,655,909
Losses and loss adjustment expenses ratio		67.3	%		62.1	%					65.5	%
Commission expense ratio		14.3	%		20.5	%					16.1	%
Other operating expense ratio (2)		22.4	%		15.2	%					20.3	%
Combined ratio		104.0	%		97.8	%					101.9	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

	Six Months Ended June 30, 2012
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	462,402		$	203,734		$	—		$	666,136
Net written premiums		315,315			117,982			—			433,297
Net earned premiums		273,125			106,011			—			379,136
Net losses and loss adjustment expenses		(191,180	)		(50,212	)		—			(241,392	)
Commission expenses		(40,418	)		(19,824	)		1,289			(58,953	)
Other operating expenses		(54,259	)		(21,867	)		—			(76,126	)
Other income (expense)		2,521			66			(1,289	)		1,298
Underwriting profit (loss)	$	(10,211	)	$	14,174		$	—		$	3,963
Net investment income		22,221			4,737			77			27,035
Net realized gains (losses)		4,200			1,209			—			5,409
Interest expense		—			—			(4,098	)		(4,098	)
Income (loss) before income taxes	$	16,210		$	20,120		$	(4,021	)	$	32,309
Income tax expense (benefit)		3,980			6,933			(1,407	)		9,506
Net income (loss)	$	12,230		$	13,187		$	(2,614	)	$	22,803
Identifiable assets	$	2,933,334		$	967,862		$	37,870		$	3,939,066
Losses and loss adjustment expenses ratio		70.0	%		47.4	%					63.7	%
Commission expense ratio		14.8	%		18.7	%					15.5	%
Other operating expense ratio (2)		18.9	%		20.5	%					19.8	%
Combined ratio		103.7	%		86.6	%					99.0	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

	Six Months Ended June 30, 2011
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	393,543		$	181,454		$	—		$	574,997
Net written premiums		253,944			122,495			—			376,439
Net earned premiums		213,807			112,448			—			326,255
Net losses and loss adjustment expenses		(152,127	)		(78,524	)		—			(230,651	)
Commission expenses		(28,742	)		(26,449	)		961			(54,230	)
Other operating expenses		(53,315	)		(19,037	)		—			(72,352	)
Other income (expense)		2,317			208			(961	)		1,564
Underwriting profit (loss)	$	(18,060	)	$	(11,354	)	$	—		$	(29,414	)
Net investment income		29,972			4,575			266			34,813
Net realized gains (losses)		2,855			(2,183	)		172			844
Interest expense		—			—			(4,093	)		(4,093	)
Income (loss) before income taxes	$	14,767		$	(8,962	)	$	(3,655	)	$	2,150
Income tax expense (benefit)		4,845			(3,027	)		(1,279	)		539
Net income (loss)	$	9,922		$	(5,935	)	$	(2,376	)	$	1,611
Identifiable assets	$	2,716,634		$	898,895		$	40,380		$	3,655,909
Losses and loss adjustment expenses ratio		71.2	%		69.8	%					70.7	%
Commission expense ratio		13.4	%		23.5	%					16.6	%
Other operating expense ratio (2)		23.8	%		16.8	%					21.7	%
Combined ratio		108.4	%		110.1	%					109.0	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

The following tables provide additional financial data by segment for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended June 30, 2012
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	49,896	$	46,482	$	96,378
Property casualty		130,627		49,533		180,160
Professional liability		33,541		12,908		46,449
Total	$	214,064	$	108,923	$	322,987
Net written premiums :
Marine	$	31,786	$	33,025	$	64,811
Property casualty		76,842		16,172		93,014
Professional liability		25,437		6,990		32,427
Total	$	134,065	$	56,187	$	190,252
Net earned premiums:
Marine	$	35,535	$	32,927	$	68,462
Property casualty		82,175		16,617		98,792
Professional liability		23,867		4,896		28,763
Total	$	141,577	$	54,440	$	196,017

	Three Months Ended June 30, 2011
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	58,323	$	39,451	$	97,774
Property casualty		100,131		42,122		142,253
Professional liability		28,313		10,374		38,687
Total	$	186,767	$	91,947	$	278,714
Net written premiums :
Marine	$	41,802	$	32,042	$	73,844
Property casualty		62,015		22,682		84,697
Professional liability		19,387		5,435		24,822
Total	$	123,204	$	60,159	$	183,363
Net earned premiums:
Marine	$	41,877	$	37,734	$	79,611
Property casualty		55,351		16,259		71,610
Professional liability		17,759		4,797		22,556
Total	$	114,987	$	58,790	$	173,777

	Six Months Ended June 30, 2012
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	111,761	$	108,812	$	220,573
Property casualty		286,546		73,274		359,820
Professional liability		64,095		21,648		85,743
Total	$	462,402	$	203,734	$	666,136
Net written premiums :
Marine	$	74,651	$	81,550	$	156,201
Property casualty		191,374		25,060		216,434
Professional liability		49,290		11,372		60,662
Total	$	315,315	$	117,982	$	433,297
Net earned premiums:
Marine	$	70,810	$	67,536	$	138,346
Property casualty		156,543		29,774		186,317
Professional liability		45,772		8,701		54,473
Total	$	273,125	$	106,011	$	379,136

	Six Months Ended June 30, 2011
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	128,671	$	100,606	$	229,277
Property casualty		213,019		61,424		274,443
Professional liability		51,853		19,424		71,277
Total	$	393,543	$	181,454	$	574,997
Net written premiums :
Marine	$	96,020	$	81,713	$	177,733
Property casualty		124,922		31,068		155,990
Professional liability		33,002		9,714		42,716
Total	$	253,944	$	122,495	$	376,439
Net earned premiums:
Marine	$	82,436	$	74,712	$	157,148
Property casualty		98,286		28,153		126,439
Professional liability		33,085		9,583		42,668
Total	$	213,807	$	112,448	$	326,255

The Insurance Companies’ net earned premiums include $18.2 million and $25.5 million of net earned premiums from the U.K. Branch for the three months ended June 30, 2012 and 2011 and $39.1 million and $42.9 million of net earned premiums from the U.K. Branch for the six months ended June 30, 2012 and 2011, respectively.

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Investments (Tables)

6 Months Ended

Jun. 30, 2012

Cash and Investments Including Other-Than-Temporarily Impaired ("OTTI") Securities Recognized within Other Comprehensive Income ("OCI")

The following tables set forth the Company’s cash and investments as of June 30, 2012 and December 31, 2011. The tables below includes other-than-temporarily impaired (“OTTI”) securities recognized within other comprehensive income (“OCI”).

	June 30, 2012
			Gross		Gross					OTTI
			Unrealized		Unrealized			Amortized		Recognized
In thousands	Fair Value		Gains		Losses			Cost		in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	454,523	$	10,330	$	(160	)	$	444,353	$	—
States, municipalities and political subdivisions		426,218		29,960		(115	)		396,373		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		398,310		17,393		(44	)		380,961		—
Residential mortgage obligations		37,805		44		(1,651	)		39,412		(887	)
Asset-backed securities		54,416		933		(33	)		53,516		—
Commercial mortgage-backed securities		209,273		14,456		(55	)		194,872		—
Subtotal	$	699,804	$	32,826	$	(1,783	)	$	668,761	$	(887	)
Corporate bonds		443,884		18,519		(779	)		426,144		—
Total fixed maturities	$	2,024,429	$	91,635	$	(2,837	)	$	1,935,631	$	(887	)
Equity securities—common stocks		103,649		29,709		(517	)		74,457		—
Short-term investments		161,983		—		—			161,983		—
Cash		45,842		—		—			45,842		—
Total	$	2,335,903	$	121,344	$	(3,354	)	$	2,217,913	$	(887	)

	December 31, 2011
			Gross		Gross					OTTI
			Unrealized		Unrealized			Amortized		Recognized
In thousands	Fair Value		Gains		Losses			Cost		in OCI
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	336,070	$	8,979	$	(383	)	$	327,474	$	—
States, municipalities and political subdivisions		410,836		28,887		(108	)		382,057		—
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		395,860		17,321		(3	)		378,542		—
Residential mortgage obligations		23,148		8		(2,848	)		25,988		(1,682	)
Asset-backed securities		48,934		695		(75	)		48,314		—
Commercial mortgage-backed securities		216,034		10,508		(593	)		206,119		—
Subtotal	$	683,976	$	28,532	$	(3,519	)	$	658,963	$	(1,682	)
Corporate bonds		457,187		15,743		(6,772	)		448,216		—
Total fixed maturities	$	1,888,069	$	82,141	$	(10,782	)	$	1,816,710	$	(1,682	)
Equity securities—common stocks		95,849		23,240		(958	)		73,567		—
Short-term investments		122,220		—		—			122,220		—
Cash		127,360		—		—			127,360
Total	$	2,233,498	$	105,381	$	(11,740	)	$	2,139,857	$	(1,682	)

Scheduled Maturity Dates for Fixed Maturity Securities by Number of Years Until Maturity

The contractual maturity dates for fixed maturity securities categorized by the number of years until maturity as of June 30, 2012 are shown in the following table:

	June 30, 2012
			Amortized
In thousands	Fair Value		Cost
Due in one year or less	$	56,876	$	56,483
Due after one year through five years		658,027		641,379
Due after five years through ten years		379,158		353,733
Due after ten years		230,564		215,275
Mortgage- and asset-backed securities		699,804		668,761
Total	$	2,024,429	$	1,935,631

Amount and Percentage of Fixed Maturities and Short-term Investments

The following table shows the amount and percentage of the Company’s fixed maturities as of June 30, 2012 by S&P credit rating or, if an S&P rating is not available, the equivalent Moody’s Investor Services (“Moody’s”) rating. The table includes fixed maturities at fair value, and the total rating is the weighted average quality rating.

				Percent of
In thousands	Rating	Fair Value		Total
Rating description:
Extremely strong	AAA	$	341,094		17	%
Very strong	AA		1,150,879		56	%
Strong	A		381,490		19	%
Adequate	BBB		132,820		7	%
Speculative	BB & Below		14,282		1	%
Not rated	NR		3,864		0	%
Total		$	2,024,429		100	%

Summary of Aggregate Fair Value and Gross Unrealized Loss by Length of Time Securities had Continuously been in Gross Unrealized Loss Position as Well as Number of Securities

The following table summarizes all securities in a gross unrealized loss position as of June 30, 2012 and December 31, 2011, showing the aggregate fair value and gross unrealized loss by the length of time those securities had continuously been in a gross unrealized loss position as well as the relevant number of securities.

	June 30, 2012						December 31, 2011
In thousands, except # of securities	Number of Securities		Fair Value		Gross Unrealized Loss		Number of Securities		Fair Value		Gross Unrealized Loss
Fixed maturities:
U.S. Government Treasury bonds,agency bonds, and foreign government bonds
0-6 months		13	$	55,371	$	71		7	$	58,587	$	98
7-12 months		—		—		—		—		—		—
> 12 months		1		4,580		89		2		6,883		285
Subtotal		14	$	59,951	$	160		9	$	65,470	$	383
States, municipalities and political subdivisions
0-6 months		5	$	3,805	$	48		7	$	5,894	$	72
7-12 months		5		3,369		46		1		216		1
> 12 months		2		1,580		21		5		2,420		35
Subtotal		12	$	8,754	$	115		13	$	8,530	$	108
Agency mortgage-backed securities
0-6 months		2	$	1,683	$	44		3	$	5,087	$	3
7-12 months		—		—		—		—		—		—
> 12 months		—		—		—		—		—		—
Subtotal		2	$	1,683	$	44		3	$	5,087	$	3
Residential mortgage obligations
0-6 months		1	$	18,163	$	56		6	$	6,672	$	184
7-12 months		7		2,673		88		7		5,250		313
> 12 months		48		12,151		1,507		47		10,749		2,351
Subtotal		56	$	32,987	$	1,651		60	$	22,671	$	2,848
Asset-backed securities
0-6 months		2	$	7,045	$	4		2	$	4,933	$	12
7-12 months		1		369		1		5		6,645		63
> 12 months		5		4,610		28		1		2		—
Subtotal		8	$	12,024	$	33		8	$	11,580	$	75
Commercial mortgage-backed securities
0-6 months		3	$	520	$	1		6	$	5,465	$	29
7-12 months		4		3,754		43		3		6,840		550
> 12 months		4		1,035		11		3		1,503		14
Subtotal		11	$	5,309	$	55		12	$	13,808	$	593
Corporate bonds
0-6 months		3	$	18,246	$	47		52	$	135,516	$	4,539
7-12 months		16		35,128		443		18		27,561		1,457
> 12 months		10		13,406		289		8		14,898		776
Subtotal		29	$	66,780	$	779		78	$	177,975	$	6,772
Total fixed maturities		132	$	187,488	$	2,837		183	$	305,121	$	10,782
Equity securities—common stocks
0-6 months		1	$	1,579	$	469		4	$	3,320	$	587
7-12 months		1		1,540		48		1		1,629		371
> 12 months		—		—		—		—		—		—
Total equity securities		2	$	3,119	$	517		5	$	4,949	$	958

Gross Unrealized Investment Losses

The following table summarizes the gross unrealized investment losses as of June 30, 2012 by the length of time that the fair value continues to be less than 80% of amortized cost:

	June 30, 2012
	Fixed		Equity
In thousands	Maturities		Securities		Total
Less than three months	$	—	$	—	$	—
Longer than three months and less than six months		—		468		468
Longer than six months and less than twelve months		—		—		—
Longer than twelve months		230		—		230
Total	$	230	$	468	$	698

Summary of Activity Related to OTTI Losses

The table below summarizes the Company’s activity related to OTTI losses for the periods indicated:

	Three Months Ended June 30,								Six Months Ended June 30,
	2012				2011				2012				2011
In thousands, except # of securities	Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount
Total OTTI losses:
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		—		—		6		516		1		54		7		549
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		2		496		1		317		3		639		1		547
Total		2	$	496		7	$	833		4	$	693		8	$	1,096
Less: Portion of loss in accumulated other comprehensive income (loss):
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				301				43				322
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	—			$	301			$	43			$	322
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				—				215				11				227
Asset-backed securities				—				—				—				—
Equities				496				317				639				547
Total			$	496			$	532			$	650			$	774

Summary of Cumulative Amounts Related to Credit Loss Portion of the OTTI Losses on Debt Securities

The following table summarizes the cumulative amounts related to the Company’s credit loss portion of the OTTI losses on debt securities for the three and six months ended June 30, 2012 and 2011. The Company does not intend to sell and it is more likely than not that it will not be required to sell, the securities prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in other comprehensive income:

	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2012		2011		2012		2011
Beginning balance	$	3,332	$	2,239	$	3,321	$	2,228
Additions for credit loss impairments recognized in the current period on securities not previously impaired		—		—		—		—
Additions for credit loss impairments recognized in the current period on securities previously impaired		—		215		11		226
Reductions for credit loss impairments previously recognized on securities sold during the period		—		—		—		—
Ending balance	$	3,332	$	2,454	$	3,332	$	2,454

Contractual Maturity by Number of Years Until Maturity for Fixed Maturity Securities with a Gross Unrealized Loss

The contractual maturity dates for fixed maturity securities categorized by the number of years until maturity, with a gross unrealized loss as of June 30, 2012 is presented in the following table:

	June 30, 2012
	Gross Unrealized Losses					Fair Value
			Percent of					Percent of
In thousands	Amount		Total			Amount		Total
Due in one year or less	$	108		4	%	$	11,872		6	%
Due after one year through five years		530		19	%		77,548		41	%
Due after five years through ten years		305		11	%		33,587		18	%
Due after ten years		111		4	%		12,478		7	%
Mortgage- and asset-backed securities		1,783		62	%		52,003		28	%
Total	$	2,837		100	%	$	187,488		100	%

Net Investment Income

The Company’s net investment income was derived from the following sources:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities	$	15,006		$	16,844		$	30,416		$	34,034
Equity securities		994			859			1,941			1,642
Short-term investments		701			274			1,014			542
Total investment income		16,701			17,977			33,371			36,218
Investment expenses		(924	)		(548	)		(6,336	)		(1,405	)
Net investment income	$	15,777		$	17,429		$	27,035		$	34,813

Change in Net Unrealized Gains/(Losses)

The change in net unrealized gains and losses, inclusive of the change in the non-credit portion of OTTI losses, consisted of:

	Six Months Ended June 30,
In thousands	2012		2011
Fixed maturities	$	17,439	$	21,206
Equity securities		6,910		4,238
Gross unrealized gains (losses)		24,349		25,444
Deferred income tax		7,796		8,573
Change in unrealized gains (losses), net	$	16,553	$	16,871

Realized Gains and Losses Excluding Net Other-Than-Temporary Impairment Losses Recognized in Earnings

Realized gains and losses, excluding net OTTI losses recognized in earnings, for the periods indicated were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
In thousands	2012			2011			2012			2011
Fixed maturities:
Gains	$	4,717		$	4,443		$	7,858		$	7,312
Losses		(231	)		(2,277	)		(1,530	)		(6,534	)
Fixed maturities, net	$	4,486		$	2,166		$	6,328		$	778
Equity securities:
Gains	$	204		$	840		$	204		$	840
Losses		(473	)		—			(473	)		—
Equity securities, net	$	(269	)	$	840		$	(269	)	$	840
Net realized gains (losses)	$	4,217		$	3,006		$	6,059		$	1,618

Fixed Maturities and Equity Securities by Asset Class that are Measured at Fair Value

The following tables present, for each of the fair value hierarchy levels as defined by the accounting guidance for fair value measurements and described below, the Company’s fixed maturities and equity securities by asset class that are measured at fair value on a recurring basis as of June 30, 2012 and December 31, 2011:

	June 30, 2012
In thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	174,237	$	280,286	$	—	$	454,523
States, municipalities and political subdivisions		—		426,218		—		426,218
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		398,310		—		398,310
Residential mortgage obligations		—		37,805		—		37,805
Asset-backed securities		—		54,416		—		54,416
Commercial mortgage-backed securities		—		209,273		—		209,273
Subtotal	$	—	$	699,804	$	—	$	699,804
Corporate bonds		—		443,884		—		443,884
Total fixed maturities	$	174,237	$	1,850,192	$	—	$	2,024,429
Equity securities—common stocks		103,649		—		—		103,649
Total	$	277,886	$	1,850,192	$	—	$	2,128,078

	December 31, 2011
In thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds, and foreign government bonds	$	136,625	$	199,445	$	—	$	336,070
States, municipalities and political subdivisions		—		410,836		—		410,836
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		395,860		—		395,860
Residential mortgage obligations		—		23,148		—		23,148
Asset-backed securities		—		48,934		—		48,934
Commercial mortgage-backed securities		—		216,034		—		216,034
Subtotal	$	—	$	683,976	$	—	$	683,976
Corporate bonds		—		457,187		—		457,187
Total fixed maturities	$	136,625	$	1,751,444	$	—	$	1,888,069
Equity securities—common stocks		95,849		—		—		95,849
Total	$	232,474	$	1,751,444	$	—	$	1,983,918

Reconciliation of Beginning and Ending Balances for All Investments Measured at Fair Value Using Level 3 Inputs

	For The Six Months Ended June 30, 2011
In thousands	Beginning Balance		Realized Gains (Losses)		Unrealized Gains (Losses)			Purchases			Sales		Settlements		Transfers into Level 3		Transfers out of Level 3			Ending Balance
Assets:
Commercial	$	1,837	$	—	$	(26	)	$	(4	)	$	—	$	—	$	—	$	(1,807	)	$	—
Total assets	$	1,837	$	—	$	(26	)	$	(4	)	$	—	$	—	$	—	$	(1,807	)	$	—

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Credit Facility

6 Months Ended

Jun. 30, 2012

Credit Facility

Note 11. Credit Facility

On April 1, 2011, the Company entered into a $165 million credit facility agreement with ING Bank N.V., London Branch, individually and as Administrative Agent, and a syndicate of lenders. The credit facility, which is denominated in U.S. dollars, is utilized to fund the Company’s participation in Syndicate 1221 through letters of credit for the 2012 and 2011 underwriting years, as well as open prior years. The letters of credit issued under the facility are denominated in British pounds and their aggregate face amount will fluctuate based on exchange rates. If any letters of credit remain outstanding under the facility after December 31, 2012, the Company would be required to post additional collateral to secure the remaining letters of credit. As of June 30, 2012, letters of credit with an aggregate face amount of $154.5 million were outstanding under the credit facility.

This credit facility contains customary covenants for facilities of this type, including restrictions on indebtedness and liens, limitations on mergers, dividends and the sale of assets, and requirements as to maintaining certain consolidated tangible net worth, statutory surplus and other financial ratios. The credit facility also provides for customary events of default, including failure to pay principal, interest or fees when due, failure to comply with covenants, any representation or warranty made by the Company being false in any material respect, default under certain other indebtedness, certain insolvency or receivership events affecting the Company and its subsidiaries, the occurrence of certain material judgments, or a change in control of the Company. The letter of credit facility is secured by a pledge of the stock of certain insurance subsidiaries of the Company. To the extent the aggregate face amount issued under the credit facility exceeds the commitment amount, the Company is required to post collateral with the lead bank of the consortium. The Company was in compliance with all covenants under the credit facility as of June 30, 2012.

The applicable margin and applicable fee rate payable under the credit facility are based on a tiered schedule that is based on the Company’s then-current ratings issued by S&P and Moody’s with respect to the Company’s Senior Notes without third-party credit enhancement, and the amount of the Company’s own collateral utilized to fund its participation in Syndicate 1221.

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Income Taxes

6 Months Ended

Jun. 30, 2012

Income Taxes

Note 7. Income Taxes

The Company is subject to the tax laws and regulations of the United States (“U.S.”) and the foreign countries in which it operates. The Company files a consolidated U.S. Federal tax return, which includes all domestic subsidiaries and the U.K. Branch. The income from the foreign operations is designated as either U.S. connected income or non-U.S. connected income. Lloyd’s is required to pay U.S. income tax on U.S. connected income written by Lloyd’s syndicates. Lloyd’s and the Internal Revenue Service (“IRS”) have entered into an agreement whereby the amount of tax due on U.S. connected income is calculated by Lloyd’s and remitted directly to the IRS. These amounts are then charged to the corporate member in proportion to their participation in the relevant syndicates. The Company’s corporate member is subject to this agreement and will receive U.K. tax credits in the United Kingdom (“U.K.”) for any U.S. income tax incurred up to the U.K. income tax charged on the U.S. connected income. The non-U.S. connected insurance income would generally constitute taxable income under the Subpart F income section of the U.S. Internal Revenue Code (“Subpart F”) since less than 50% of Syndicate 1221’s premiums are derived within the U.K. and would therefore be subject to U.S. taxation when the Lloyd’s year of account closes. Taxes are accrued at a 35% rate on the Company’s foreign source insurance income and foreign tax credits, where available, are utilized to offset U.S. tax as permitted. The Company’s effective tax rate for Syndicate 1221 taxable income could substantially exceed 35% to the extent the Company is unable to offset U.S. taxes paid under Subpart F tax regulations with U.K. tax credits on future underwriting year distributions. U.S. taxes are not accrued on the earnings of the Company’s foreign agencies as these earnings are not includable as Subpart F income in the current year. These earnings are subject to taxes under U.K. tax regulations at a 26% rate through March 31, 2012. A finance bill was enacted in the U.K. that reduces the U.K. corporate tax rate from 26% to 24% effective April 2012. The effect of such tax rate change was not material.

The Company has not provided for U.S. deferred income taxes on the undistributed earnings of approximately $82.2 million of its non-U.S. subsidiaries since these earnings are intended to be permanently reinvested in the non-U.S. subsidiaries. However, in the future, if such earnings were distributed to the Company, taxes of approximately $1.6 million, assuming all foreign tax credits are realized, would be payable on such undistributed earnings and would be reflected in the tax provision for the year in which these earnings are no longer intended to be permanently reinvested in the foreign subsidiary.

Unrecognized tax benefits are differences between tax positions taken in the tax returns and benefits recognized in the financial statements. The Company has no unrecognized tax benefits as of June 30, 2012 and 2011. The Company did not incur any interest or penalties related to unrecognized tax benefits for the three and six months ended June 30, 2012 and 2011. The Company is currently not under examination by any major U.S. or foreign tax authority and is generally subject to U.S. Federal, state or local, or foreign tax examinations by tax authorities for 2008 and subsequent years.

The Company recorded income tax expense of $6.2 million and $9.5 million for the three and six months ended June 30, 2012 compared to $5.0 million and $0.5 million for the same periods in 2011, resulting in an effective tax rate of 29.5% and 29.4% for the three and six months ended June 30, 2012 and 34.6% and 25.1% for the comparable periods in 2011. The effective tax rate on net investment income was 28.2% and 26.9% for the three and six months ended June 30, 2012 compared to 28.7% and 28.6% for the same periods in 2011.

The Company had state and local deferred tax assets amounting to potential future tax benefits of $0.6 million and $0.2 million as of June 30, 2012 and December 31, 2011, respectively. Included in the deferred tax assets are state and local net operating loss carry-forwards of $0.2 million as of both June 30, 2012 and December 31, 2011. A valuation allowance was established for the full amount of these potential future tax benefits due to the uncertainty associated with their realization. The Company’s state and local tax carry-forwards as of June 30, 2012 expire from 2024 to 2031.

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2012

Stock-Based Compensation

Note 5. Stock-Based Compensation

Stock-based compensation granted under the Company’s stock plans is expensed in tranches over the vesting period. Options and non-performance based grants generally vest equally over a three or four year period and the options have a maximum term of ten years. Certain non-performance based grants vest over five years with one-third vesting in each of the third, fourth and fifth years. The Company’s performance based share grants generally consist of two types of awards. The restricted stock units issued in 2011 and after will cliff vest over a three year period, with 50% vesting in full, and 50% dependent on the compound annual growth in book value per share for the three years immediately prior to the vesting date, with actual shares that vest ranging between 150% to 0% of that portion of the original award. Those performance based restricted stock units issued prior to 2011 generally vest over five years with one-third vesting in each of the third, fourth and fifth years, dependent on the rolling three-year average return on equity based on the three years prior to the year in which the vesting occurs, with actual shares that vest ranging between 150% to 0% of the original award.

The amounts charged to expense for stock-based compensation for the three and six months ended June 30, 2012 and 2011 are presented in the following table:

	Three Months Ended June 30,					Six Months Ended June 30,
In thousands	2012		2011			2012		2011
Restricted stock units	$	1,974	$	531		$	3,186	$	1,479
Directors restricted stock grants (1)		60		60			120		120
Employee stock purchase plan		41		68			15		123
Stock appreciation rights (2)		—		(57	)		—		(53	)
Stock options		—		—			—		—
Total stock-based compensation	$	2,075	$	602		$	3,321	$	1,669

(1) —  Relates to non-employee directors serving on the Parent Company's Board of Directors, all of whom have been elected by the Company's stockholders, as well as non-employee directors serving on NUAL's Board of Directors.

(2) —  All outstanding stock appreciation rights were exercised during 2011. The Company has no current plans to issue stock appreciation rights under the 2005 Amended and Restated Stock Incentive Plan.

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Lloyd's Syndicate 1221

6 Months Ended

Jun. 30, 2012

Lloyd's Syndicate 1221

Note 6. Lloyd’s Syndicate 1221

The Company’s Lloyd’s Operations included in the consolidated financial statements represents its participation in Syndicate 1221. Syndicate 1221’s stamp capacity is £184 million ($289 million) for the 2012 underwriting year compared to £175 million ($280 million) for the 2011 underwriting year. Stamp capacity is a measure of the amount of premiums a Lloyd’s syndicate is authorized to write based on a business plan approved by the Council of Lloyd’s. Syndicate 1221’s stamp capacity is expressed net of commission (as is standard at Lloyd’s). The Syndicate 1221 premiums recorded in the Company’s financial statements are gross of commission. The Company controlled 100% of Syndicate 1221’s stamp capacity for the 2012 and 2011 underwriting years through its wholly-owned Lloyd’s corporate member.

The Company provides letters of credit and posts cash to Lloyd’s to support its participation in Syndicate 1221’s stamp capacity. As of June 30, 2012, the Company had provided letters of credit of $154.5 million and did not have any cash collateral posted. If Syndicate 1221 increases its stamp capacity and the Company participates in the additional stamp capacity, or if Lloyd’s changes the capital requirements, the Company may be required to supply additional collateral acceptable to Lloyd’s. If the Company is unwilling or unable to provide additional acceptable collateral, the Company will be required to reduce its participation in the stamp capacity of Syndicate 1221. The letters of credit are provided through a credit facility with a consortium of banks which provides the Company with the ability to have letters of credit issued to support Syndicate 1221’s stamp capacity at Lloyd’s for the 2011 and 2012 underwriting years. If any letters of credit remain outstanding under the facility after December 31, 2012, the Company would be required to post additional collateral to secure the remaining letters of credit. If the credit facility is not renewed prior to December 31, 2012, the Company will need to find internal and/or external sources to provide either letters of credit or other collateral in order to continue to participate in Syndicate 1221. The credit facility is collateralized by all of the common stock of Navigators Insurance Company. Refer to Note 11, Credit Facility, for additional information.

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Senior Notes due May 1, 2016

6 Months Ended

Jun. 30, 2012

Senior Notes due May 1, 2016

Note 8. Senior Notes due May 1, 2016

On April 17, 2006, the Company completed a public debt offering of $125 million principal amount of 7% senior unsecured notes (the “Senior Notes”) and received net proceeds of $123.5 million. The principal amount of the Senior Notes is payable in a single installment on May 1, 2016. In April 2009, the Company repurchased $10.0 million aggregate principal amount of the Senior Notes from an unaffiliated note holder on the open market for $7.0 million, which generated a $3.0 million pre-tax gain that was reflected in Other income. The Senior Notes liability at June 30, 2012 was $114.3 million. The unamortized discount at June 30, 2012 was $0.7 million. The aggregate principal amount of the Senior Notes that will be repaid on May 1, 2016 as a result of these transactions is $115.0 million.

The fair value of the Senior Notes was $121.0 million and $119.3 million as of June 30, 2012 and December 31, 2011. The fair value was determined using quoted prices for similar instruments in active markets and is classified as Level 2 within the fair value hierarchy as defined by the accounting guidance for fair value measurements.

Interest is payable on the Senior Notes each May 1 and November 1. The effective interest rate related to the Senior Notes, based on the proceeds net of discount and all issuance costs, is approximately 7.17%. Interest expense on the Senior Notes for the three and six months ended each of June 30, 2012 and 2011 was $2.0 million and $4.1 million, respectively.

The Senior Notes, the Company’s only senior unsecured obligation, will rank equally with any future senior unsecured indebtedness. The Company may redeem the Senior Notes at any time and from time to time, in whole or in part, at a “make-whole” redemption price. The terms of the Senior Notes contain various restrictive business and financial covenants typical for debt obligations of this type, including limitations on mergers, liens and dispositions of the common stock of certain subsidiaries. As of June 30, 2012, the Company was in compliance with all such covenants.

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Senior Notes Due May 1, 2016 - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended		6 Months Ended
	Apr. 30, 2009	Apr. 17, 2006	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Debt Instrument [Line Items]
Senior Notes			$ 114,348,000		$ 114,348,000		$ 114,276,000
Senior Notes due May 1, 2016
Debt Instrument [Line Items]
Principal amount of senior notes		125,000,000
Interest rate stated on senior notes		7.00%
Senior notes due date		May 01, 2016
Net proceeds from issuance of senior notes		123,500,000
Aggregate principal amount of senior notes repurchased from unaffiliated note holder	10,000,000
Repurchased senior notes	7,000,000
Pretax gain from repurchase of senior notes	3,000,000
Outstanding principal amount of senior notes			115,000,000		115,000,000
Unamortized discount			700,000		700,000
Senior Notes			114,300,000		114,300,000
Fair value of senior notes			121,000,000		121,000,000		119,300,000
Interest expense on senior notes			$ 2,000,000	$ 4,100,000	$ 2,000,000	$ 4,100,000
Effective interest rate related to senior notes			7.17%		7.17%
Debt instrument, covenant compliance					As of June 30, 2012, the Company was in compliance with all such covenants.
Senior Notes due May 1, 2016 | Semi Annual Payment, First Payment
Debt Instrument [Line Items]
Interest payment date on senior notes			--05-01		--05-01
Senior Notes due May 1, 2016 | Semi Annual Payment, Second Payment
Debt Instrument [Line Items]
Interest payment date on senior notes			--11-01		--11-01

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Reinsurance Ceded (Tables)

6 Months Ended

Jun. 30, 2012

Lists of 20 Largest Reinsurers Measured by Reinsurance Recoverable

The following table lists the Company’s 20 largest reinsurers measured by the amount of reinsurance recoverable for ceded losses and LAE and ceded unearned premium (constituting approximately 73.4% of the total recoverable), together with the reinsurance recoverable and collateral as of June 30, 2012, and the reinsurers’ ratings from the A.M. Best Company (“AMB”) or Standard & Poor’s (“S&P”):

	Reinsurance Recoverables
	Unearned		Paid/Unpaid				Collateral
In thousands	Premium		Losses		Total		Held(1)		AMB		S&P
Everest Reinsurance Company	$	16,225	$	75,837	$	92,062	$	6,179		A+		A+
Munich Reinsurance America Inc.		11,108		78,824		89,932		222		A+		AA-
Swiss Reinsurance America Corporation		5,076		84,310		89,386		6,556		A+		AA-
Transatlantic Reinsurance Company		15,570		73,065		88,635		6,745		A		A+
National Indemnity Company		34,376		37,716		72,092		15,981		A++		AA+
Lloyd’s Syndicate #2003		8,092		32,416		40,508		8,245		A		A+
Partner Reinsurance Europe		9,447		31,013		40,460		22,540		A+		A+
Allied World Reinsurance		8,108		21,459		29,567		2,405		A		A
Berkley Insurance Company		1,848		27,099		28,947		596		A+		A+
General Reinsurance Corporation		675		26,487		27,162		890		A++		AA+
Scor Global P&C SE		13,613		11,644		25,257		9,190		A		A+
Tower Insurance Company		10,331		14,166		24,497		4,541		A-		NR
Scor Holding (Switzerland) AG		1,323		20,988		22,311		9,069		A		A+
Validus Reinsurance Ltd.		2,979		18,560		21,539		9,745		A		A-
Ace Property and Casualty Insurance Company		1,022		19,824		20,846		—		A+		AA-
Platinum Underwriters Re		558		18,884		19,442		1,994		A		A-
Munchener Ruckversicherungs-Gesellschaft		390		19,037		19,427		6,719		A+		AA-
Sirius America Insurance Company		88		19,205		19,293		335		A		A-
AXIS Re Europe		4,252		13,187		17,439		5,742		A		A+
Lloyd’s Syndicate #4000		2,499		14,341		16,840		2,216		A		A+
Top 20 Total	$	147,580	$	658,062	$	805,642	$	119,910
All Others		63,509		228,515		292,024		91,959
Total	$	211,089	$	886,577	$	1,097,666	$	211,869

(1) — Collateral includes letter of credit, balances payable and other balances held by the Company’s Insurance Companies and Lloyd’s Operations.

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Financial Data by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011		Dec. 31, 2011
Segment Reporting Information [Line Items]
Gross written premiums	$ 322,987		$ 278,714		$ 666,136		$ 574,997
Net written premiums	190,252		183,363		433,297		376,439
Net earned premiums	196,017		173,777		379,136		326,255
Net losses and loss adjustment expenses	(123,407)		(113,863)		(241,392)		(230,651)
Commission expenses	(29,503)		(28,030)		(58,953)		(54,230)
Other operating expenses	(39,819)		(35,777)		(76,126)		(72,352)
Other income (expense)	387		573		1,298		1,564
Underwriting profit (loss)	3,675		(3,320)		3,963		(29,414)
Net investment income	15,777		17,429		27,035		34,813
Net realized gains (losses)	3,721		2,474		5,409		844
Interest expense	(2,049)		(2,047)		(4,098)		(4,093)
Income (loss) before income taxes	21,124		14,536		32,309		2,150
Income tax expense (benefit)	6,225		5,032		9,506		539
Net income (loss)	14,899		9,504		22,803		1,611
Identifiable assets	3,939,066		3,655,909		3,939,066		3,655,909		3,670,007
Losses and loss adjustment expenses ratio	63.00%		65.50%		63.70%		70.70%
Commission expense ratio	15.10%		16.10%		15.50%		16.60%
Other operating expense ratio	20.00%	[1]	20.30%	[1]	19.80%	[1]	21.70%	[1]
Combined ratio	98.10%		101.90%		99.00%		109.00%
Insurance Companies
Segment Reporting Information [Line Items]
Gross written premiums	214,064		186,767		462,402		393,543
Net written premiums	134,065		123,204		315,315		253,944
Net earned premiums	141,577		114,987		273,125		213,807
Net losses and loss adjustment expenses	(100,003)		(77,330)		(191,180)		(152,127)
Commission expenses	(21,117)		(16,402)		(40,418)		(28,742)
Other operating expenses	(28,914)		(26,516)		(54,259)		(53,315)
Other income (expense)	879		626		2,521		2,317
Underwriting profit (loss)	(7,578)		(4,635)		(10,211)		(18,060)
Net investment income	13,286		14,989		22,221		29,972
Net realized gains (losses)	2,325		3,100		4,200		2,855
Income (loss) before income taxes	8,033		13,454		16,210		14,767
Income tax expense (benefit)	2,101		4,617		3,980		4,845
Net income (loss)	5,932		8,837		12,230		9,922
Identifiable assets	2,933,334		2,716,634		2,933,334		2,716,634
Losses and loss adjustment expenses ratio	70.60%		67.30%		70.00%		71.20%
Commission expense ratio	14.90%		14.30%		14.80%		13.40%
Other operating expense ratio	19.90%	[1]	22.40%	[1]	18.90%	[1]	23.80%	[1]
Combined ratio	105.40%		104.00%		103.70%		108.40%
Lloyd's Operations
Segment Reporting Information [Line Items]
Gross written premiums	108,923		91,947		203,734		181,454
Net written premiums	56,187		60,159		117,982		122,495
Net earned premiums	54,440		58,790		106,011		112,448
Net losses and loss adjustment expenses	(23,404)		(36,533)		(50,212)		(78,524)
Commission expenses	(8,938)		(12,042)		(19,824)		(26,449)
Other operating expenses	(10,905)		(9,261)		(21,867)		(19,037)
Other income (expense)	60		361		66		208
Underwriting profit (loss)	11,253		1,315		14,174		(11,354)
Net investment income	2,454		2,320		4,737		4,575
Net realized gains (losses)	1,396		(798)		1,209		(2,183)
Income (loss) before income taxes	15,103		2,837		20,120		(8,962)
Income tax expense (benefit)	5,207		1,029		6,933		(3,027)
Net income (loss)	9,896		1,808		13,187		(5,935)
Identifiable assets	967,862		898,895		967,862		898,895
Losses and loss adjustment expenses ratio	43.00%		62.10%		47.40%		69.80%
Commission expense ratio	16.40%		20.50%		18.70%		23.50%
Other operating expense ratio	19.90%	[1]	15.20%	[1]	20.50%	[1]	16.80%	[1]
Combined ratio	79.30%		97.80%		86.60%		110.10%
Corporate
Segment Reporting Information [Line Items]
Commission expenses	552	[2]	414	[2]	1,289	[2]	961	[2]
Other income (expense)	(552)	[2]	(414)	[2]	(1,289)	[2]	(961)	[2]
Net investment income	37	[2]	120	[2]	77	[2]	266	[2]
Net realized gains (losses)			172	[2]			172	[2]
Interest expense	(2,049)	[2]	(2,047)	[2]	(4,098)	[2]	(4,093)	[2]
Income (loss) before income taxes	(2,012)	[2]	(1,755)	[2]	(4,021)	[2]	(3,655)	[2]
Income tax expense (benefit)	(1,083)	[2]	(614)	[2]	(1,407)	[2]	(1,279)	[2]
Net income (loss)	(929)	[2]	(1,141)	[2]	(2,614)	[2]	(2,376)	[2]
Identifiable assets	$ 37,870	[2]	$ 40,380	[2]	$ 37,870	[2]	$ 40,380	[2]

[1] Includes Other operating expenses and Other income.

[2] Includes Corporate segment intercompany eliminations.

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Credit Facility - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended		1 Months Ended
	Jun. 30, 2012	Jun. 30, 2012 Lloyd's Operations Syndicate 1221	Apr. 01, 2011 Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Line of credit facility			$ 165
Issuance of new letters of credit, expiry date			Dec. 31, 2012
Aggregate face amount of letters of credit outstanding		$ 154.5
Line of credit facility, covenant terms	This credit facility contains customary covenants for facilities of this type, including restrictions on indebtedness and liens, limitations on mergers, dividends and the sale of assets, and requirements as to maintaining certain consolidated tangible net worth, statutory surplus and other financial ratios. The credit facility also provides for customary events of default, including failure to pay principal, interest or fees when due, failure to comply with covenants, any representation or warranty made by the Company being false in any material respect, default under certain other indebtedness, certain insolvency or receivership events affecting the Company and its subsidiaries, the occurrence of certain material judgments, or a change in control of the Company.
Line of credit facility, covenant compliance	The Company was in compliance with all covenants under the credit facility as of June 30, 2012.

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Summary Of Activity Related to OTTI Losses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 Investment	Jun. 30, 2011 Investment	Jun. 30, 2012 Investment	Jun. 30, 2011 Investment
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of Securities	2	7	4	8
Total other-than-temporary impairment losses	$ 496	$ 833	$ 693	$ 1,096
Portion of loss recognized in other comprehensive income (before tax)		301	43	322
Net other-than-temporary impairment losses recognized in earnings	496	532	650	774
Residential Mortgage Backed Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of Securities		6	1	7
Total other-than-temporary impairment losses		516	54	549
Portion of loss recognized in other comprehensive income (before tax)		301	43	322
Net other-than-temporary impairment losses recognized in earnings		215	11	227
Equity Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of Securities	2	1	3	1
Total other-than-temporary impairment losses	496	317	639	547
Net other-than-temporary impairment losses recognized in earnings	$ 496	$ 317	$ 639	$ 547

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Net income (loss)	$ 14,899		$ 9,504		$ 22,803		$ 1,611
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments, net of deferred tax of $2,976 and $8,390 for the three months ended 06/30/2012 and 06/30/2011 and $7,796 and $ 8573 for the six months ended 06/30/2012 and 06/30/2011 respectively	7,604	[1]	16,833	[1]	16,553	[2]	16,871	[2]
Change in foreign currency translation gains (losses), net of deferred tax of $452 and $(4) for the three months ended 06/30/2012 and 06/30/2011 and $1,851 and $359 for the six months ended 06/30/2012 and 06/30/2011 respectively	(840)		(8)		(3,812)		923
Other comprehensive income (loss)	6,764		16,825		12,741		17,794
Comprehensive income (loss)	$ 21,663		$ 26,329		$ 35,544		$ 19,405

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 9,039 $ 15,450 Reclassification adjustment for net realized gains (losses) included in net income (1,607 ) 1,326 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 172 57 Change in net unrealized gains (losses) on investments, net of tax $ 7,604 $ 16,833

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 17,643 $ 16,011 Reclassification adjustment for net realized gains (losses) included in net income (1,335 ) 830 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 245 30 Change in net unrealized gains (losses) on investments, net of tax $ 16,553 $ 16,871

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Recent Accounting Pronouncements

6 Months Ended

Jun. 30, 2012

Recent Accounting Pronouncements

Note 2. Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In September 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2011-08 amending Codification topic 350 – Intangibles – Goodwill and Other. The amendment simplifies how goodwill is tested for impairment by permitting entities to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value as a basis for determining whether it is necessary to perform the two step goodwill impairment test. The amendment is effective for the interim and annual goodwill impairment tests performed for fiscal years beginning after December 15, 2011. Adoption of this amendment had no impact on the Company’s consolidated financial condition, results of operations or cash flows.

In June 2011, the FASB issued ASU 2011-05 amending Codification Topic 220 – Comprehensive Income. The amendment requires that other comprehensive income be either presented in a single continuous statement or two separate but consecutive statements. In addition, the amendment requires the disclosure of reclassification adjustments for items reclassified from other comprehensive income to net income on the face of the financial statements. The amendment is effective for the interim and annual periods beginning after December 15, 2011 and should be applied retrospectively. This standard only affected the Company’s presentation of comprehensive income and did not affect the Company’s consolidated financial position, results of operations, or cash flows.

In May 2011, the FASB issued ASU 2011-04 amending Codification Topic 820 – Fair Value Measurements and Disclosures. The amendments were intended to result in common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (“IFRS”). The amendment expands and enhances current disclosures about fair value measurement and clarifies the FASB’s intent regarding the application of existing fair value measurement requirements in certain circumstances. The amendments are effective for the interim and annual periods beginning after December 15, 2011 and should be applied prospectively. Adoption of the amendment had no impact on the Company’s consolidated financial position, results of operations or cash flows.

In October 2010, the FASB issued ASU 2010-26 amending Codification Topic 944 – Financial Services – Insurance; Accounting for Costs Associated with Acquiring or Renewing Insurance Contracts. The amendment clarifies which costs relating to the acquisition of new or renewal insurance contracts qualify for deferral. In addition, the amendment limits deferrable costs that can be capitalized to those that are incremental direct costs related to the successful acquisition of new or renewal insurance contracts. The amendment is effective for fiscal years and interim periods within a fiscal year, beginning after December 15, 2011. The guidance is to be applied prospectively upon effectiveness of the amendment, with retrospective application permitted, but not required. The Company adopted this guidance prospectively in the first quarter of 2012. The amount of acquisition costs capitalized during the current year under the adopted guidance compared with the amount of acquisition costs that would have been capitalized during the year if the entity’s previous policy had been applied resulted in decreases in amounts capitalized of $0.8 million and $1.7 million for the three and six months ended June 30, 2012, respectively.

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Additional Financial Data by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting Information [Line Items]
Gross written premiums	$ 322,987	$ 278,714	$ 666,136	$ 574,997
Net written premiums	190,252	183,363	433,297	376,439
Net earned premiums	196,017	173,777	379,136	326,255
Marine
Segment Reporting Information [Line Items]
Gross written premiums	96,378	97,774	220,573	229,277
Net written premiums	64,811	73,844	156,201	177,733
Net earned premiums	68,462	79,611	138,346	157,148
Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	180,160	142,253	359,820	274,443
Net written premiums	93,014	84,697	216,434	155,990
Net earned premiums	98,792	71,610	186,317	126,439
Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	46,449	38,687	85,743	71,277
Net written premiums	32,427	24,822	60,662	42,716
Net earned premiums	28,763	22,556	54,473	42,668
Insurance Companies
Segment Reporting Information [Line Items]
Gross written premiums	214,064	186,767	462,402	393,543
Net written premiums	134,065	123,204	315,315	253,944
Net earned premiums	141,577	114,987	273,125	213,807
Insurance Companies | Marine
Segment Reporting Information [Line Items]
Gross written premiums	49,896	58,323	111,761	128,671
Net written premiums	31,786	41,802	74,651	96,020
Net earned premiums	35,535	41,877	70,810	82,436
Insurance Companies | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	130,627	100,131	286,546	213,019
Net written premiums	76,842	62,015	191,374	124,922
Net earned premiums	82,175	55,351	156,543	98,286
Insurance Companies | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	33,541	28,313	64,095	51,853
Net written premiums	25,437	19,387	49,290	33,002
Net earned premiums	23,867	17,759	45,772	33,085
Lloyd's Operations
Segment Reporting Information [Line Items]
Gross written premiums	108,923	91,947	203,734	181,454
Net written premiums	56,187	60,159	117,982	122,495
Net earned premiums	54,440	58,790	106,011	112,448
Lloyd's Operations | Marine
Segment Reporting Information [Line Items]
Gross written premiums	46,482	39,451	108,812	100,606
Net written premiums	33,025	32,042	81,550	81,713
Net earned premiums	32,927	37,734	67,536	74,712
Lloyd's Operations | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	49,533	42,122	73,274	61,424
Net written premiums	16,172	22,682	25,060	31,068
Net earned premiums	16,617	16,259	29,774	28,153
Lloyd's Operations | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	12,908	10,374	21,648	19,424
Net written premiums	6,990	5,435	11,372	9,714
Net earned premiums	$ 4,896	$ 4,797	$ 8,701	$ 9,583

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Amount And Percentage Of Fixed Maturities And Short-term Investments (Detail) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Extremely strong	Jun. 30, 2012 Very strong	Jun. 30, 2012 Strong	Jun. 30, 2012 Adequate	Jun. 30, 2012 Speculative	Jun. 30, 2012 Not rated
Rating			AAA	AA	A	BBB	BB & Below	NR
Fair Value	$ 2,024,429	$ 1,888,069	$ 341,094	$ 1,150,879	$ 381,490	$ 132,820	$ 14,282	$ 3,864
Percent of Total	100.00%		17.00%	56.00%	19.00%	7.00%	1.00%	0.00%

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Segment Information (Tables)

6 Months Ended

Jun. 30, 2012

Financial Data by Segment

Financial data by segment for the three and six months ended June 30, 2012 and 2011 were as follows:

	Three Months Ended June 30, 2012
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	214,064		$	108,923		$	—		$	322,987
Net written premiums		134,065			56,187			—			190,252
Net earned premiums		141,577			54,440			—			196,017
Net losses and loss adjustment expenses		(100,003	)		(23,404	)		—			(123,407	)
Commission expenses		(21,117	)		(8,938	)		552			(29,503	)
Other operating expenses		(28,914	)		(10,905	)		—			(39,819	)
Other income (expense)		879			60			(552	)		387
Underwriting profit (loss)	$	(7,578	)	$	11,253		$	—		$	3,675
Net investment income		13,286			2,454			37			15,777
Net realized gains (losses)		2,325			1,396			—			3,721
Interest expense		—			—			(2,049	)		(2,049	)
Income (loss) before income taxes	$	8,033		$	15,103		$	(2,012	)	$	21,124
Income tax expense (benefit)		2,101			5,207			(1,083	)		6,225
Net income (loss)	$	5,932		$	9,896		$	(929	)	$	14,899
Identifiable assets	$	2,933,334		$	967,862		$	37,870		$	3,939,066
Losses and loss adjustment expenses ratio		70.6	%		43.0	%					63.0	%
Commission expense ratio		14.9	%		16.4	%					15.1	%
Other operating expense ratio (2)		19.9	%		19.9	%					20.0	%
Combined ratio		105.4	%		79.3	%					98.1	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

	Three Months Ended June 30, 2011
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	186,767		$	91,947		$	—		$	278,714
Net written premiums		123,204			60,159			—			183,363
Net earned premiums		114,987			58,790			—			173,777
Net losses and loss adjustment expenses		(77,330	)		(36,533	)		—			(113,863	)
Commission expenses		(16,402	)		(12,042	)		414			(28,030	)
Other operating expenses		(26,516	)		(9,261	)		—			(35,777	)
Other income (expense)		626			361			(414	)		573
Underwriting profit (loss)	$	(4,635	)	$	1,315		$	—		$	(3,320	)
Net investment income		14,989			2,320			120			17,429
Net realized gains (losses)		3,100			(798	)		172			2,474
Interest expense		—			—			(2,047	)		(2,047	)
Income (loss) before income taxes	$	13,454		$	2,837		$	(1,755	)	$	14,536
Income tax expense (benefit)		4,617			1,029			(614	)		5,032
Net income (loss)	$	8,837		$	1,808		$	(1,141	)	$	9,504
Identifiable assets	$	2,716,634		$	898,895		$	40,380		$	3,655,909
Losses and loss adjustment expenses ratio		67.3	%		62.1	%					65.5	%
Commission expense ratio		14.3	%		20.5	%					16.1	%
Other operating expense ratio (2)		22.4	%		15.2	%					20.3	%
Combined ratio		104.0	%		97.8	%					101.9	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

	Six Months Ended June 30, 2012
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	462,402		$	203,734		$	—		$	666,136
Net written premiums		315,315			117,982			—			433,297
Net earned premiums		273,125			106,011			—			379,136
Net losses and loss adjustment expenses		(191,180	)		(50,212	)		—			(241,392	)
Commission expenses		(40,418	)		(19,824	)		1,289			(58,953	)
Other operating expenses		(54,259	)		(21,867	)		—			(76,126	)
Other income (expense)		2,521			66			(1,289	)		1,298
Underwriting profit (loss)	$	(10,211	)	$	14,174		$	—		$	3,963
Net investment income		22,221			4,737			77			27,035
Net realized gains (losses)		4,200			1,209			—			5,409
Interest expense		—			—			(4,098	)		(4,098	)
Income (loss) before income taxes	$	16,210		$	20,120		$	(4,021	)	$	32,309
Income tax expense (benefit)		3,980			6,933			(1,407	)		9,506
Net income (loss)	$	12,230		$	13,187		$	(2,614	)	$	22,803
Identifiable assets	$	2,933,334		$	967,862		$	37,870		$	3,939,066
Losses and loss adjustment expenses ratio		70.0	%		47.4	%					63.7	%
Commission expense ratio		14.8	%		18.7	%					15.5	%
Other operating expense ratio (2)		18.9	%		20.5	%					19.8	%
Combined ratio		103.7	%		86.6	%					99.0	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

	Six Months Ended June 30, 2011
	Insurance			Lloyd’s
In thousands	Companies			Operations			Corporate(1)			Total
Gross written premiums	$	393,543		$	181,454		$	—		$	574,997
Net written premiums		253,944			122,495			—			376,439
Net earned premiums		213,807			112,448			—			326,255
Net losses and loss adjustment expenses		(152,127	)		(78,524	)		—			(230,651	)
Commission expenses		(28,742	)		(26,449	)		961			(54,230	)
Other operating expenses		(53,315	)		(19,037	)		—			(72,352	)
Other income (expense)		2,317			208			(961	)		1,564
Underwriting profit (loss)	$	(18,060	)	$	(11,354	)	$	—		$	(29,414	)
Net investment income		29,972			4,575			266			34,813
Net realized gains (losses)		2,855			(2,183	)		172			844
Interest expense		—			—			(4,093	)		(4,093	)
Income (loss) before income taxes	$	14,767		$	(8,962	)	$	(3,655	)	$	2,150
Income tax expense (benefit)		4,845			(3,027	)		(1,279	)		539
Net income (loss)	$	9,922		$	(5,935	)	$	(2,376	)	$	1,611
Identifiable assets	$	2,716,634		$	898,895		$	40,380		$	3,655,909
Losses and loss adjustment expenses ratio		71.2	%		69.8	%					70.7	%
Commission expense ratio		13.4	%		23.5	%					16.6	%
Other operating expense ratio (2)		23.8	%		16.8	%					21.7	%
Combined ratio		108.4	%		110.1	%					109.0	%

(1) — Includes Corporate segment intercompany eliminations.

(2) — Includes Other operating expenses and Other income.

Additional Financial Data by Segment

The following tables provide additional financial data by segment for the three and six months ended June 30, 2012 and 2011:

	Three Months Ended June 30, 2012
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	49,896	$	46,482	$	96,378
Property casualty		130,627		49,533		180,160
Professional liability		33,541		12,908		46,449
Total	$	214,064	$	108,923	$	322,987
Net written premiums :
Marine	$	31,786	$	33,025	$	64,811
Property casualty		76,842		16,172		93,014
Professional liability		25,437		6,990		32,427
Total	$	134,065	$	56,187	$	190,252
Net earned premiums:
Marine	$	35,535	$	32,927	$	68,462
Property casualty		82,175		16,617		98,792
Professional liability		23,867		4,896		28,763
Total	$	141,577	$	54,440	$	196,017

	Three Months Ended June 30, 2011
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	58,323	$	39,451	$	97,774
Property casualty		100,131		42,122		142,253
Professional liability		28,313		10,374		38,687
Total	$	186,767	$	91,947	$	278,714
Net written premiums :
Marine	$	41,802	$	32,042	$	73,844
Property casualty		62,015		22,682		84,697
Professional liability		19,387		5,435		24,822
Total	$	123,204	$	60,159	$	183,363
Net earned premiums:
Marine	$	41,877	$	37,734	$	79,611
Property casualty		55,351		16,259		71,610
Professional liability		17,759		4,797		22,556
Total	$	114,987	$	58,790	$	173,777

	Six Months Ended June 30, 2012
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	111,761	$	108,812	$	220,573
Property casualty		286,546		73,274		359,820
Professional liability		64,095		21,648		85,743
Total	$	462,402	$	203,734	$	666,136
Net written premiums :
Marine	$	74,651	$	81,550	$	156,201
Property casualty		191,374		25,060		216,434
Professional liability		49,290		11,372		60,662
Total	$	315,315	$	117,982	$	433,297
Net earned premiums:
Marine	$	70,810	$	67,536	$	138,346
Property casualty		156,543		29,774		186,317
Professional liability		45,772		8,701		54,473
Total	$	273,125	$	106,011	$	379,136

	Six Months Ended June 30, 2011
	Insurance		Lloyd’s
In thousands	Companies		Operations		Total
Gross written premiums:
Marine	$	128,671	$	100,606	$	229,277
Property casualty		213,019		61,424		274,443
Professional liability		51,853		19,424		71,277
Total	$	393,543	$	181,454	$	574,997
Net written premiums :
Marine	$	96,020	$	81,713	$	177,733
Property casualty		124,922		31,068		155,990
Professional liability		33,002		9,714		42,716
Total	$	253,944	$	122,495	$	376,439
Net earned premiums:
Marine	$	82,436	$	74,712	$	157,148
Property casualty		98,286		28,153		126,439
Professional liability		33,085		9,583		42,668
Total	$	213,807	$	112,448	$	326,255