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, 2011

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 27, 2011 was 14,943,149.

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

INDEX

		Page No.
Part I. FINANCIAL INFORMATION:
	Item 1. Financial Statements
	Consolidated Balance Sheets June 30, 2011 (Unaudited) and December 31, 2010		3
	Consolidated Statements of Income (Unaudited) Three Months Ended June  30, 2011 and 2010 and Six Months Ended June 30, 2011 and 2010		4
	Consolidated Statements of Stockholders’ Equity (Unaudited) Six Months Ended June  30, 2011 and 2010		5
	Consolidated Statements of Comprehensive Income (Unaudited) Three Months Ended June  30, 2011 and 2010 and Six Months Ended June 30, 2011 and 2010		6
	Consolidated Statements of Cash Flows (Unaudited) Six Months Ended June 30, 2011 and 2010		7
	Notes to Interim Consolidated Financial Statements (Unaudited)		8
	Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		33
	Item 3. Quantitative and Qualitative Disclosures About Market Risk		81
	Item 4. Controls and Procedures		81
Part II. OTHER INFORMATION
	Item 1. Legal Proceedings		82
	Item 1A. Risk Factors		82
	Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		83
	Item 3. Defaults Upon Senior Securities		83
	Item 5. Other Information		83
	Item 6. Exhibits		84
	Signatures		85
	Index of Exhibits		86
	Exhibit 11-1
	Exhibit 31-1
	Exhibit 31-2
	Exhibit 32-1
	Exhibit 32-2

2

Part I. Financial Information

Item 1. Financial Statements

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

($ in thousands, except share data)

		September 30,			September 30,
	June 30, 2011			December 31, 2010
	(Unaudited)
ASSETS
Investments and cash:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2011, $1,799,369; 2010, $1,855,598)	$	1,847,221		$	1,882,245
Equity securities, available-for-sale, at fair value (cost: 2011, $68,035; 2010, $64,793)		94,737			87,258
Short-term investments, at cost which approximates fair value		185,032			153,057
Cash		40,340			31,768
Total investments and cash		2,167,330			2,154,328
Premiums receivable		273,327			188,368
Prepaid reinsurance premiums		176,960			156,869
Reinsurance recoverable on paid losses		65,856			56,658
Reinsurance recoverable on unpaid losses and loss adjustment expenses		852,992			843,296
Deferred policy acquisition costs		60,468			55,201
Accrued investment income		14,212			15,590
Goodwill and other intangible assets		7,037			6,925
Current income tax receivable, net		6,877			1,054
Deferred income tax, net		6,871			15,141
Other assets		23,979			38,029
Total assets	$	3,655,909		$	3,531,459
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Reserves for losses and loss adjustment expenses	$	2,033,556		$	1,985,838
Unearned premiums		534,474			463,515
Reinsurance balances payable		125,482			105,904
Senior notes		115,547			114,138
Accounts payable and other liabilities		28,931			32,710
Total liabilities		2,837,990			2,702,105
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 17,400,857 shares for 2011 and 17,274,440 shares for 2010		1,744			1,728
Additional paid-in capital		323,174			312,588
Treasury stock, at cost (2,385,393 shares for 2011 and 1,532,273 shares for 2010)		(106,377	)		(64,935	)
Retained earnings		541,123			539,512
Accumulated other comprehensive income		58,255			40,461
Total stockholders’ equity		817,919			829,354
Total liabilities and stockholders’ equity	$	3,655,909		$	3,531,459

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

($ and shares in thousands, except net income per share)

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited)						(Unaudited)
Gross written premiums	$	278,714		$	253,568		$	574,997		$	523,713
Revenues:
Net written premiums	$	183,363		$	165,005		$	376,439		$	354,322
Change in unearned premiums		(9,586	)		(3,534	)		(50,184	)		(28,782	)
Net earned premiums		173,777			161,471			326,255			325,540
Net investment income		17,429			17,853			34,813			35,825
Total other-than-temporary impairment losses		(833	)		(489	)		(1,096	)		(740	)
Portion of loss recognized in other comprehensive income (before tax)		301			334			322			504
Net other-than-temporary impairment losses recognized in earnings		(532	)		(155	)		(774	)		(236	)
Net realized gains (losses)		3,006			11,020			1,618			17,133
Other income (expense)		573			(899	)		1,564			171
Total revenues		194,253			189,290			363,476			378,433
Expenses:
Net losses and loss adjustment expenses		113,863			99,863			230,651			203,670
Commission expenses		28,030			25,677			54,230			50,993
Other operating expenses		35,777			34,513			72,352			69,099
Interest expense		2,047			2,044			4,093			4,088
Total expenses		179,717			162,097			361,326			327,850
Income before income taxes		14,536			27,193			2,150			50,583
Income tax expense (benefit)		5,032			8,223			539			14,568
Net income (loss)	$	9,504		$	18,970		$	1,611		$	36,015
Net income per common share:
Basic	$	0.62		$	1.18		$	0.10		$	2.20
Diluted	$	0.60		$	1.16		$	0.10		$	2.16
Average common shares outstanding:
Basic		15,373			16,100			15,555			16,369
Diluted		15,726			16,422			15,944			16,686

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 STOCKHOLDERS’ EQUITY

($ in thousands)

		September 30,			September 30,
	Six Months Ended June 30,
	2011			2010
	(Unaudited)
Preferred stock
Balance at beginning and end of period	$	—		$	—
Common stock
Balance at beginning of year	$	1,728		$	1,721
Shares issued under stock plans		16			3
Balance at end of period	$	1,744		$	1,724
Additional paid-in capital
Balance at beginning of year	$	312,588		$	304,505
Share-based compensation		10,586			4,044
Balance at end of period	$	323,174		$	308,549
Treasury stock, at cost
Balance at beginning of year	$	(64,935	)	$	(18,296	)
Treasury stock acquired		(41,442	)		(46,169	)
Issuance related to share-based compensation		—			4,677
Balance at end of period	$	(106,377	)	$	(59,788	)
Retained earnings
Balance at beginning of year	$	539,512		$	469,934
Net income		1,611			36,015
Balance at end of period	$	541,123		$	505,949
Accumulated other comprehensive income, net of tax
Balance at beginning of year	$	40,461		$	43,655
Change in net unrealized gains on securities		16,696			15,522
Change in net non-credit other-than-temporary impairment losses		175			(1,302	)
Change in net cumulative translation adjustments		923			434
Balance at end of period	$	58,255		$	58,309
Total stockholders’ equity at end of period	$	817,919		$	814,743

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 COMPREHENSIVE INCOME

($ in thousands)

		September 30,			September 30,
	Three Months Ended June 30,
	2011			2010
	(Unaudited)
Net income	$	9,504		$	18,970
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments, net of tax expense (benefit) of $8,390 and $4,162 in 2011 and 2010, respectively (1)		16,833			8,222
Change in foreign currency translation gains (losses), net of tax expense (benefit) of $(4) and $(554) in 2011 and 2010, respectively		(8	)		(1,028	)
Other comprehensive income (loss)		16,825			7,194
Comprehensive income	$	26,329		$	26,164
(1)       Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	$	18,385		$	15,281
Reclassification adjustment for net realized (gains) losses included in net income		(1,913	)		7,163
Reclassification adjustment for other-than-temporary impairment losses recognized in net income		361			(104	)
Change in net unrealized gains (losses) on investments, net of tax	$	16,833		$	8,222
	Six Months Ended June 30,
	2011			2010
	(Unaudited)
Net income	$	1,611		$	36,015
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments, net of tax expense (benefit) of $8,573 and $7,354 in 2011 and 2010, respectively (2)		16,871			14,220
Change in foreign currency translation gains (losses), net of tax expense (benefit) of $359 and $234 in 2011 and 2010, respectively		923			434
Other comprehensive income (loss)		17,794			14,654
Comprehensive income	$	19,405		$	50,669
(2)       Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	$	17,266		$	25,196
Reclassification adjustment for net realized (gains) losses included in net income		(913	)		11,136
Reclassification adjustment for other-than-temporary impairment losses recognized in net income		518			(160	)
Change in net unrealized gains (losses) on investments, net of tax	$	16,871		$	14,220

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

($ in thousands)

		September 30,			September 30,
	Six Months Ended June 30,
	2011			2010
	(Unaudited)
Operating activities:
Net income	$	1,611		$	36,015
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation & amortization		2,084			2,337
Deferred income taxes		(1,047	)		12,438
Net realized (gains) losses		(844	)		(16,897	)
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses		(16,952	)		26,105
Reserves for losses and loss adjustment expenses		42,964			9,744
Prepaid reinsurance premiums		(19,803	)		216
Unearned premiums		70,009			28,706
Premiums receivable		(84,308	)		(29,710	)
Deferred policy acquisition costs		(5,096	)		(5,883	)
Accrued investment income		1,251			2,100
Reinsurance balances payable		19,304			(4,250	)
Current income taxes		(3,685	)		(6,727	)
Other		8,897			10,172
Net cash provided by operating activities		14,385			64,366
Investing activities:
Fixed maturities
Redemptions and maturities		95,268			84,190
Sales		461,215			439,441
Purchases		(505,278	)		(529,939	)
Equity securities
Sales		2,107			899
Purchases		(5,056	)		(16,761	)
Change in payable for securities		17,825			10,455
Net change in short-term investments		(29,848	)		5,308
Purchase of property and equipment		(1,771	)		(971	)
Net cash provided by (used in) investing activities		34,462			(7,378	)
Financing activities:
Purchase of treasury stock		(41,442	)		(46,169	)
Proceeds of stock issued from employee stock purchase plan		360			415
Proceeds of stock issued from exercise of stock options		807			198
Net cash used in financing activities		(40,275	)		(45,556	)
Increase in cash		8,572			11,432
Cash at beginning of year		31,768			509
Cash at end of period	$	40,340		$	11,941
Supplemental cash information:
Income taxes paid, net	$	8,134		$	7,214
Interest paid		4,025			4,025
Issuance of stock to directors		210			180

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 term “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 2010 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 January 2010, the Financial Accounting Standards Board (“FASB”) issued accounting guidance (Accounting Standards Update (“ASU”) 2010-06) which improves disclosures about fair value measurements (Accounting Standards Codification (“ASC” or “Codification”) 820-10). This guidance requires additional disclosures regarding significant transfers in and out of Levels 1 and 2 and additional disclosures regarding Level 3 purchases, sales, issuances and settlements. In addition, this guidance also requires fair value measurement disclosures for each class of assets and liabilities as well as disclosures about the valuation techniques and inputs used to measure fair value for items classified as Level 2 or Level 3. This guidance was effective as of January 1, 2010 for calendar year reporting entities with the exception of the additional disclosures about purchases, sales, issuances and settlements in the roll forward of activity in Level 3 fair value measurements which became effective as of January 1, 2011 for calendar year reporting entities. Early adoption is permitted. The Company adopted this guidance in the first quarter of 2010 with the exception of the additional disclosures about purchases, sales, issuances and settlement in the roll forward of activity in Level 3 fair value measurements, which the Company adopted in the first quarter of 2011. Adoption of this guidance did not have a material effect on the Company’s consolidated financial condition, results of operations or cash flows.

Recent Accounting Developments

In June 2011, the FASB issued accounting guidance (ASU 2011-05) that modifies the presentation requirements for comprehensive income (ASC 220). This guidance is effective as of January 1, 2012 for calendar year reporting entities. Early adoption is permitted. We are currently evaluating the potential impact of adopting this guidance on our consolidated financial condition, results of operations and cash flows.

In May 2011, the FASB issued accounting guidance (ASU 2011-04) that revises the wording used to describe fair value and the requirements for fair value measurement and disclosure (ASC 820). This guidance is effective as of January 1, 2012 for calendar year reporting entities. Early adoption is not permitted. We are currently evaluating the potential impact of adopting this guidance on our consolidated financial condition, results of operations and cash flows.

8

In October 2010, the FASB issued accounting guidance (ASU 2010-26) that clarifies which costs relating to the acquisition of new or renewal insurance contracts qualify for deferral (ASC 944). In addition, this guidance specifies that only costs that are related directly to the successful acquisition of new or renewal insurance contracts can be capitalized. This guidance is effective as of January 1, 2012 for calendar year reporting entities with early adoption as of January 1, 2011 permitted. The Company did not early adopt this guidance and it is currently evaluating the potential impact of adoption on its’ consolidated financial condition, results of operations and cash flows.

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, 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 coverage for onshore energy business at Lloyd’s of London (“Lloyd’s”) through Lloyd’s Syndicate 1221 (“Syndicate 1221”). The Company’s Lloyd’s Operations includes Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s underwriting agency that manages Syndicate 1221. The Company controlled 100% of the stamp capacity of Syndicate 1221 through its’ wholly-owned Lloyd’s corporate member in 2011 and 2010.

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

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 over 100% indicates an underwriting loss.

9

Financial data by segment for the three and six months ended June 30, 2011 and 2010 follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30, 2011
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
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)	$	2,681,023		$	908,361		$	74,326		$	3,655,910
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 (3)		22.4	%		15.2	%					20.3	%
Combined ratio		104.0	%		97.8	%					101.9	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

10

		September 30,		September 30,		September 30,
	Three Months Ended June 30, 2011
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
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

11

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30, 2010
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
Gross written premiums	$	170,641		$	82,927		$	—		$	253,568
Net written premiums		111,401			53,604			—			165,005
Net earned premiums		110,425			51,046			—			161,471
Net losses and loss adjustment expenses		(64,862	)		(35,001	)		—			(99,863	)
Commission expenses		(14,615	)		(11,402	)		340			(25,677	)
Other operating expenses		(25,907	)		(8,617	)		—			(34,524	)
Other income (expense)		(114	)		(434	)		(340	)		(888	)
Underwriting profit (loss)		4,927			(4,408	)		—			519
Net investment income		15,556			2,128			169			17,853
Net realized gains (losses)		10,729			19			117			10,865
Interest expense		—			—			(2,044	)		(2,044	)
Income (loss) before income taxes		31,212			(2,261	)		(1,758	)		27,193
Income tax expense (benefit)		9,654			(815	)		(616	)		8,223
Net income (loss)	$	21,558		$	(1,446	)	$	(1,142	)	$	18,970
Identifiable assets (2)	$	2,564,004		$	829,008		$	70,742		$	3,480,255
Losses and loss adjustment expenses ratio		58.7	%		68.6	%					61.8	%
Commission expense ratio		13.2	%		22.3	%					15.9	%
Other operating expense ratio (3)		23.6	%		17.7	%					22.0	%
Combined ratio		95.5	%		108.6	%					99.7	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

12

		September 30,		September 30,		September 30,
	Three Months Ended June 30, 2010
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
Gross written premiums:
Marine	$	55,204	$	41,829	$	97,033
Property Casualty		81,797		29,122		110,919
Professional Liability		33,640		11,976		45,616
Total	$	170,641	$	82,927	$	253,568
Net written premiums:
Marine	$	37,153	$	34,421	$	71,574
Property Casualty		54,300		13,924		68,224
Professional Liability		19,948		5,259		25,207
Total	$	111,401	$	53,604	$	165,005
Net earned premiums:
Marine	$	40,554	$	34,727	$	75,281
Property Casualty		50,171		10,763		60,934
Professional Liability		19,700		5,556		25,256
Total	$	110,425	$	51,046	$	161,471

13

		September 30,			September 30,			September 30,			September 30,
	Six Months Ended June 30, 2011
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
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 LAE		(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)	$	2,681,023		$	908,361		$	74,326		$	3,655,910
Loss and LAE ratio		71.2	%		69.8	%					70.7	%
Commission expense ratio		13.4	%		23.5	%					16.6	%
Other operating expense ratio (3)		23.8	%		16.8	%					21.7	%
Combined ratio		108.4	%		110.1	%					109.0	%

⁽¹⁾  Includes Corporate segment intercompany eliminations.

⁽²⁾  Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

14

		September 30,		September 30,		September 30,
	Six Months Ended June 30, 2011
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
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

15

		September 30,			September 30,			September 30,			September 30,
	Six Months Ended June 30, 2010
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
Gross written premiums	$	348,479		$	175,234		$	—		$	523,713
Net written premiums		232,741			121,581			—			354,322
Net earned premiums		221,636			103,904			—			325,540
Net losses and LAE		(133,265	)		(70,405	)		—			(203,670	)
Commission expenses		(28,977	)		(22,368	)		352			(50,993	)
Other operating expenses		(53,260	)		(15,860	)		—			(69,120	)
Other income (expense)		(1,091	)		1,635			(352	)		192
Underwriting profit (loss)		5,043			(3,094	)		—			1,949
Net investment income		31,304			4,197			324			35,825
Net realized gains (losses)		15,934			732			231			16,897
Interest expense		—			—			(4,088	)		(4,088	)
Income (loss) before income taxes		52,281			1,835			(3,533	)		50,583
Income tax expense (benefit)		15,117			688			(1,237	)		14,568
Net income (loss)	$	37,164		$	1,147		$	(2,296	)	$	36,015
Identifiable assets (2)	$	2,564,004		$	829,008		$	70,742		$	3,480,255
Loss and LAE ratio		60.1	%		67.8	%					62.6	%
Commission expense ratio		13.1	%		21.5	%					15.7	%
Other operating expense ratio (3)		24.5	%		13.7	%					21.1	%
Combined ratio		97.7	%		103.0	%					99.4	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

16

		September 30,		September 30,		September 30,
	Six Months Ended June 30, 2010
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
Gross written premiums:
Marine	$	122,730	$	100,970	$	223,700
Property Casualty		161,143		49,081		210,224
Professional Liability		64,606		25,183		89,789
Total	$	348,479	$	175,234	$	523,713
Net written premiums:
Marine	$	88,156	$	84,063	$	172,219
Property Casualty		103,997		25,635		129,632
Professional Liability		40,588		11,883		52,471
Total	$	232,741	$	121,581	$	354,322
Net earned premiums:
Marine	$	81,648	$	70,287	$	151,935
Property Casualty		101,252		22,678		123,930
Professional Liability		38,736		10,939		49,675
Total	$	221,636	$	103,904	$	325,540

The Insurance Companies’ net earned premiums include $25.5 million and $18.7 million of net earned premiums from the U.K. Branch for the three months ended June 30, 2011 and 2010, respectively and $42.9 million and $38.6 million of net earned premiums from the U.K. Branch for the six months ended June 30, 2011 and 2010.

17

Note 4. Reinsurance Ceded

The Company ceded earned premiums were $82.1 million and $84.3 million for the three months ended June 30, 2011 and 2010, respectively, and were $178.1 million and $169.8 million for the six months ended June 30, 2011 and 2010, respectively. The Company ceded incurred losses were $53.1 million and $61.1 million for the three months ended June 30, 2011 and 2010, respectively, and were $127.7 million and $113.4 million for the six months ended June 30, 2011 and 2010.

The following table lists the Company’s 20 largest reinsurers measured by the amount of reinsurance recoverable for ceded losses and loss adjustment expense and ceded unearned premium (constituting approximately 74.3% of the total recoverable), together with the reinsurance recoverable and collateral at June 30, 2011, and the reinsurers’ rating from the indicated rating agency:

		September 30,		September 30,		September 30,		September 30,	September 30,	September 30,
	Reinsurance Recoverables
Reinsurer	Unearned Premium		Unpaid/Paid Losses		Total		Collateral Held (1)		Rating & Rating Agency (2)
	($ in millions)
Swiss Reinsurance America Corporation	$	6.8	$	95.7	$	102.5	$	8.2	A	AMB
Munich Reinsurance America Inc.		14.1		74.9		89.0		4.3	A+	AMB
Everest Reinsurance Company		16.3		67.5		83.8		7.7	A+	AMB
Transatlantic Reinsurance Company		17.8		65.9		83.7		6.8	A	AMB
Scor Holding (Switzerland) AG		4.2		41.6		45.8		9.2	A	AMB
Partner Reinsurance Europe		7.5		35.5		43.0		18.2	AA-	S&P
National Indemnity Company		12.7		29.6		42.3		6.1	A++	AMB
Munchener Ruckversicherungs-Gesellschaft		0.9		35.1		36.0		8.6	A+	AMB
Lloyd’s Syndicate #2003		5.4		27.0		32.4		6.1	A	AMB
Berkley Insurance Company		2.0		29.8		31.8		—	A+	AMB
General Reinsurance Corporation		0.9		30.6		31.5		1.3	A++	AMB
White Mountains Reinsurance of America		0.2		29.6		29.8		0.7	A-	AMB
Platinum Underwriters Re		1.3		25.4		26.7		3.1	A	AMB
Ace Property and Casualty Insurance Company		3.2		20.8		24.0		0.5	A+	AMB
AXIS Re Europe		5.7		18.1		23.8		6.1	A	AMB
Allied World Reinsurance		6.9		15.6		22.5		2.6	A	AMB
Validus Reinsurance Ltd.		3.0		15.7		18.7		6.4	A-	AMB
Tower Insurance Company		12.6		5.6		18.2		4.4	A-	AMB
Lloyd’s Syndicate #457		3.9		11.1		15.0		4.2	A	AMB
Lloyd’s Syndicate #4000		2.6		11.4		14.0		2.1	A	AMB
Top 20 Total		128.0		686.5		814.5		106.6
All Other		49.0		232.4		281.4		91.1
Total	$	177.0	$	918.9	$	1,095.9	$	197.7

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

(2) A.M. Best Company (^“A.M. Best”, ^“AMB”) and Standard and Poor’s Rating Services (“S&P”⁾

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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 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 will cliff vest in three years, generally with 50% vesting in full, while the vesting of the remaining 50% will be 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 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 were $0.5 million and $0.7 million for the three months ended June 30, 2011 and 2010, respectively, and were $1.5 million and $2.7 million for the six months ended June 30, 2011 and 2010.

The Company expensed $67,700 and $49,000 for the three months ended June 30, 2011 and 2010, respectively, and $122,900 and $96,000 for the six months ended June 30, 2011 and 2010, respectively, related to our Employee Stock Purchase Plan. In addition, $60,000 and $45,000 were expensed for the three months ended June 30, 2011 and 2010, respectively, and $120,000 and $90,000 were expensed for the six months ended June 30, 2011 and 2010, respectively, related to stock compensation to non-employee directors as part of their directors’ compensation for serving on the Parent Company’s Board of Directors.

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 £175 million ($280 million) for the 2011 underwriting year compared to £168 million ($251 million) for the 2010 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 2011 and 2010 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, 2011, the Company had provided letters of credit of $132.3 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. The credit facility will expire on December 31, 2011. Refer to Note 11, Credit Facility for additional information. If the consortium of banks decides not to renew the credit facility, 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.

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Note 7. Income Taxes

The Company is subject to the tax laws and regulations of the United States (“U.S.”) and foreign countries in which it operates. The Company files a consolidated U.S. federal tax return, which includes all domestic subsidiaries and the United Kingdom (“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 members in proportion to their participation in the relevant syndicates. The Company’s corporate members are subject to this agreement and will receive U.K. tax credits 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 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 28% rate through March 31, 2011. A finance bill was enacted in the U.K. that reduces the U.K. corporate tax rate from 28% to 26% effective April 2011. 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 $8.7 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 $0.6 million 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, assuming all foreign tax credits are realized.

A tax benefit taken in the tax return but not in the financial statements is known as an unrecognized tax benefit. The Company has no unrecognized tax benefits at June 30, 2011 and June 30, 2010. The Company did not incur any interest or penalties related to unrecognized tax benefits for the three and six months ended June 30, 2011 and 2010. 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 years 2007 and subsequent.

The Company recorded income tax expense of $5.0 million and $0.5 million for the three and six months ended June 30, 2011 compared to $8.2 million and $14.6 million for the comparable period in 2010, resulting in effective tax rates of 34.6% and 25.1% for the three and six months ended June 30, 2011 and 30.2% and 28.8% for the comparable period in 2010, respectively. The effective tax rate on net investment income was 28.7% and 28.6% for the three and six months ended June 30, 2011 compared to 27.2% and 25.9% for the same periods in 2010. The net deferred tax asset at June 30, 2011 and December 31, 2010 was $6.9 million and $15.1 million, respectively.

The Company had state and local deferred tax assets amounting to potential future tax benefits of $2.4 million and $2.2 million at June 30, 2011 and December 31, 2010, respectively. Included in the deferred tax assets are state and local net operating loss carry-forwards of $1.4 million at June 30, 2011 and December 31, 2010, respectively. 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 at June 30, 2011 expire from 2023 to 2025.

20

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 notes due May 1, 2016 (the “Senior Notes”) and received net proceeds of $123.5 million. The interest payment dates on the Senior Notes are 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, approximates 7.17%. The interest expense on the Senior Notes was $2.0 million for the three months ended June 30, 2011 and 2010, respectively, and $4.1 million for the six months ended June 30, 2011 and 2010, respectively. The fair value of the Senior Notes, based on quoted market prices, was $124.7 million and $117.6 million at June 30, 2011 and December 31, 2010, respectively.

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, 2011, the Company was in compliance with all such covenants.

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 $2.9 million pre-tax gain that was reflected in Other income. As a result of this transaction, approximately $115 million aggregate principal amount of the Senior Notes remains issued and outstanding as of June 30, 2011.

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 are 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. 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.

In October 2010, Equitas represented by Resolute Management Services Limited (the “Resolute”) commenced litigation and arbitration proceedings (the “Resolute Proceedings”) against Navigators Management Company (“NMC”) Inc., a wholly-owned subsidiary of the Company. The arbitration demand and complaint in the Resolute Proceedings allege that NMC failed to make timely payments to Resolute under certain reinsurance agreements in connection with subrogation recoveries received by NMC with respect to several catastrophe losses that occurred in the late 1980’s and early 1990’s. Resolute alleges that it suffered damages of approximately $7.5 million as a result of the alleged delays in payment.

21

The Company believes that the claims of Resolute are without merit and it intends to vigorously contest the claims. While it is too early to predict with any certainty the outcome of the Resolute Proceedings, the Company believes that the ultimate outcome would not be expected to have a significant adverse effect on its results of operations, financial condition or liquidity, although an unexpected adverse resolution of the Resolute Proceedings could have a material adverse effect on the Company’s results of operations in a particular fiscal quarter or year.

Note 10. Investments

The following tables set forth the Company’s cash and investments as of June 30, 2011 and December 31, 2010. The table below includes other-than-temporarily impaired (“OTTI”) securities recognized within other comprehensive income (“OCI”).

		September 30,		September 30,		September 30,			September 30,		September 30,
June 30, 2011	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
	($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	291,492	$	5,492	$	(610	)	$	286,610	$	—
States, municipalities and political subdivisions		374,873		15,910		(962	)		359,925		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		365,497		12,752		(864	)		353,609		—
Residential mortgage obligations		25,948		40		(2,266	)		28,174		(1,384	)
Asset-backed securities		52,559		539		(77	)		52,097		—
Commercial mortgage-backed securities		218,429		6,480		(800	)		212,749		—
Subtotal		662,433		19,811		(4,007	)		646,629		(1,384	)
Corporate bonds		518,423		14,927		(2,709	)		506,205		—
Total fixed maturities		1,847,221		56,140		(8,288	)		1,799,369		(1,384	)
Equity securities - common stocks		94,737		26,959		(257	)		68,035		—
Cash		40,340		—		—			40,340		—
Short-term investments		185,032		—		—			185,032		—
Total	$	2,167,330	$	83,099	$	(8,545	)	$	2,092,776	$	(1,384	)

22

		September 30,		September 30,		September 30,			September 30,		September 30,
December 31, 2010	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
	($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	324,145	$	5,229	$	(4,499	)	$	323,415	$	—
States, municipalities and political subdivisions		392,250		11,903		(3,805	)		384,152		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		382,628		10,127		(2,434	)		374,935		—
Residential mortgage obligations		20,463		24		(2,393	)		22,832		(1,646	)
Asset-backed securities		46,093		247		(292	)		46,138		—
Commercial mortgage-backed securities		190,015		4,804		(1,794	)		187,005		—
Subtotal		639,199		15,202		(6,913	)		630,910		(1,646	)
Corporate bonds		526,651		15,075		(5,545	)		517,121		—
Total fixed maturities		1,882,245		47,409		(20,762	)		1,855,598		(1,646	)
Equity securities - common stocks		87,258		22,475		(10	)		64,793		—
Cash		31,768		—		—			31,768		—
Short-term investments		153,057		—		—			153,057		—
Total	$	2,154,328	$	69,884	$	(20,772	)	$	2,105,216	$	(1,646	)

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.

23

The scheduled maturity dates for fixed maturity securities categorized by the number of years until maturity at June 30, 2011 are shown in the following table:

		September 30,		September 30,
Period from June 30, 2011 to Maturity	Fair Value		Amortized Cost
	($ in thousands)
Due in one year or less	$	101,673	$	100,292
Due after one year through five years		544,156		528,318
Due after five years through ten years		342,481		331,505
Due after ten years		196,478		192,625
Mortgage- and asset-backed (including GNMAs)		662,433		646,629
Total	$	1,847,221	$	1,799,369

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The following table summarizes all securities in a gross unrealized loss position at June 30, 2011 and December 31, 2010, 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.

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	June 30, 2011						December 31, 2010
	Number of Securities		Fair Value		Gross Unrealized  Loss		Number of Securities		Fair Value		Gross Unrealized Loss
	($ in thousands except # of securities)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds
0-6 Months		4	$	7,714	$	16		36	$	163,253	$	4,499
7-12 Months		16		42,623		594		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		20		50,337		610		36		163,253		4,499
States, municipalities and political subdivisions
0-6 Months		4		11,970		42		57		112,291		3,749
7-12 Months		15		19,445		870		1		1,004		20
> 12 Months		8		2,239		50		4		1,317		36
Subtotal		27		33,654		962		62		114,612		3,805
Agency mortgage-backed securities
0-6 Months		5		31,727		89		36		139,226		2,434
7-12 Months		16		41,952		775		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		21		73,679		864		36		139,226		2,434
Residential mortgage obligations
0-6 Months		9		10,986		119		3		3,215		20
7-12 Months		1		183		15		—		—		—
> 12 Months		47		12,779		2,132		52		15,939		2,373
Subtotal		57		23,948		2,266		55		19,154		2,393
Asset-backed securities
0-6 Months		8		18,225		77		7		28,175		292
7-12 Months		—		—		—		—		—		—
> 12 Months		1		2		—		1		2		—
Subtotal		9		18,227		77		8		28,177		292
Commercial mortgage-backed securities
0-6 Months		14		50,628		541		16		78,212		1,755
7-12 Months		5		11,832		240		—		—		—
> 12 Months		1		222		19		2		491		39
Subtotal		20		62,682		800		18		78,703		1,794
Corporate bonds
0-6 Months		36		60,661		667		98		214,180		5,545
7-12 Months		49		101,100		2,042		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		85		161,761		2,709		98		214,180		5,545
Total fixed maturities		239	$	424,288	$	8,288		313	$	757,305	$	20,762
Equity securities - common stocks
0-6 Months		7	$	4,743	$	257		1	$	322	$	10
7-12 Months		—		—		—		—		—		—
> 12 Months		—		—		—		—		—		—
Total equity securities		7	$	4,743	$	257		1	$	322	$	10

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.

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In the above table the residential mortgage obligations 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, 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 ultimately incurs 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.

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 in relation 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.

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. 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 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 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.

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

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	Three Months Ended								Six Months Ended
	June 30,								June 30,
	2011				2010				2011				2010
	Number of				Number of				Number of				Number of
	Securities		Amount		Securities		Amount		Securities		Amount		Securities		Amount
($ in thousands, except # of securities)
Total other-than-temporary impairment losses
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		6		516		4		489		7		549		6		713
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		1		317		—		—		1		547		1		27
Total		7	$	833		4	$	489		8	$	1,096		7	$	740
Portion of loss in accumulated other comprehensive income (loss)
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				301				334				322				504
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	301			$	334			$	322			$	504
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				215				155				227				209
Asset-backed securities				—				—				—				—
Equities				317				—				547				27
Total			$	532			$	155			$	774			$	236

The following tables summarize 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, 2011 and 2010 that it does not intend to sell and it is more likely than not that it will not be required to sell the security prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in other comprehensive income:

		September 30,		September 30,
	Three months ended June 30,
($ in thousands)	2011		2010
Beginning balance at April 1	$	1,669	$	2,577
Credit losses on securities not previously impaired as of April 1		—		182
Additional credit losses on securities previously impaired as of April 1		215		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759

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		September 30,		September 30,
	Six months ended June 30,
($ in thousands)	2011		2010
Beginning balance at January 1	$	1,658	$	2,523
Credit losses on securities not previously impaired as of January 1		—		236
Additional credit losses on securities previously impaired as of January 1		226		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759

For the three months ended June 30, 2011, OTTI losses within other comprehensive income (“OCI”) increased $0.1 million. For the six months ended June 30, 2011, OTTI losses within other comprehensive income (“OCI”) decreased $0.3 million, primarily as a result of increases in the fair value of securities previously impaired. For the comparable period in 2010, OTTI losses within OCI decreased $0.9 million and $1.9 million, respectively.

The contractual maturity categorized by the number of years until maturity for fixed maturity securities with a gross unrealized loss at June 30, 2011 are shown in the following table:

		September 30,		September 30,			September 30,		September 30,
	Gross Unrealized Loss					Fair Value
			Percent					Percent
	Amount		of Total			Amount		of Total
	($ in thousands)
Due in one year or less	$	—		—		$	7		—
Due after one year through five years		730		9	%		93,496		22	%
Due after five years through ten years		2,258		27	%		109,933		26	%
Due after ten years		1,293		16	%		42,316		10	%
Mortgage- and asset-backed securities		4,007		48	%		178,536		42	%
Total fixed maturity securities	$	8,288		100	%	$	424,288		100	%

The change in net unrealized gains/(losses) consisted of:

		September 30,			September 30,
	Six months ended June 30,
	2011			2010
	($ in thousands)
Fixed maturities	$	21,206		$	26,921
Equity securities		4,238			(5,347	)
		25,444			21,574
Deferred income tax (charged) credited		(8,573	)		(7,354	)
Change in unrealized gains (losses), net	$	16,871		$	14,220

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Realized gains/(losses) for the periods indicated were as follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	($ in thousands)
Fixed maturities:
Gains	$	4,443		$	11,281		$	7,312		$	17,651
(Losses)		(2,277	)		(26	)		(6,534	)		(283	)
		2,166			11,255			778			17,368
Equity securities:
Gains		840			—			840			—
(Losses)		—			(235	)		—			(235	)
		840			(235	)		840			(235	)
Net realized gains (losses)	$	3,006		$	11,020		$	1,618		$	17,133

The following table presents, for each of the fair value hierarchy levels as defined in ASC 820, Fair Value Measurements, the Company’s fixed maturities and equity securities by asset class that are measured at fair value at June 30, 2011 and December 31, 2010:

		September 30,		September 30,		September 30,		September 30,
June 30, 2011	Level 1		Level 2		Level 3		Total
	($ in thousands)
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	108,291	$	183,201	$	—	$	291,492
States, municipalities and political subdivisions		—		374,873		—		374,873
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		—		365,497		—		365,497
Residential mortgage obligations		—		25,948		—		25,948
Asset-backed securities		—		52,559		—		52,559
Commercial mortgage-backed securities		—		218,429		—		218,429
Subtotal		—		662,433		—		662,433
Corporate bonds		—		518,423		—		518,423
Total fixed maturities		108,291		1,738,930		—		1,847,221
Equity securities - common stocks		94,737		—		—		94,737
Total	$	203,028	$	1,738,930	$	—	$	1,941,958

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		September 30,		September 30,		September 30,		September 30,
December 31, 2010	Level 1		Level 2		Level 3		Total
	($ in thousands)
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	212,933	$	111,212	$	—	$	324,145
States, municipalities and political subdivisions		—		392,250		—		392,250
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		—		382,628		—		382,628
Residential mortgage obligations		—		20,463		—		20,463
Asset-backed securities		—		46,093		—		46,093
Commercial mortgage-backed securities		—		188,178		1,837		190,015
Subtotal		—		637,362		1,837		639,199
Corporate bonds		—		526,651		—		526,651
Total fixed maturities		212,933		1,667,475		1,837		1,882,245
Equity securities - common stocks		87,258		—		—		87,258
Total	$	300,191	$	1,667,475	$	1,837	$	1,969,503

The fair value of financial instruments is determined based on the following fair value hierarchy. The fair value measurement inputs and valuation techniques are similar across all asset classes within the levels outlined below.

• 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 which 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.

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The Company did not have any significant transfers between Level 1 and 2 for the three and six months ended June 30, 2011. The Company did not have any securities classified as Level 3 at June 30, 2011 and 2010.

The following table presents 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 and 2010.

		September 30,			September 30,
	2011			2010
	($ in thousands)
Level 3 investments as of December 31	$	1,837		$	—
Unrealized net gains included in other comprehensive income (loss)		(26	)		—
Purchases, sales, paydowns and amortization		(4	)		—
Transfer from Level 3		(1,807	)		—
Transfer to Level 3		—			—
Level 3 investments as of June 30	$	—		$	—

Note 11. Credit Facility

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 is a letter of credit facility and replaces a $140 million credit facility agreement that expired March 31, 2011. The credit facility, which is denominated in U.S. dollars, will be utilized to fund the Company’s participation in Syndicate 1221 through letters of credit for the 2011 and 2012 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. The ability to have letters of credit issued under this credit facility expires on December 31, 2012. At June 30, 2011, letters of credit with an aggregate face amount of $132.3 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 at June 30, 2011.

As a result of the April 1, 2011 replacement of the expiring credit facility, the applicable margin and applicable fee rate payable under the letter of credit facility are now based on a tiered schedule that is based on the Company’s then-current ratings issued by S&P and Moody’s Investors Service (“Moody’s”) with respect to the Company’s senior unsecured long-term debt securities and without third-party credit enhancement and the amount of the Company’s own ‘Funds at Lloyd’s’ collateral.

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Note 12. Share Repurchases

In May 2011, the Parent Company’s Board of Directors authorized an additional $50 million under the existing share repurchase program of the Company’s common stock which increased the size of the program to $150 million. This repurchase program was initially authorized in November 2009. The share repurchase program as originally approved was scheduled to expire on December 31, 2010, however, prior to its expiration, the Parent Company’s Board of Directors approved an extension to December 31, 2011.

Purchases are permitted from time to time at prevailing prices in open market or privately negotiated transactions through December 31, 2011. The timing and amount of purchases under the program depend on a variety of factors, including the trading price of the stock, market conditions and corporate and regulatory considerations.

For the three months ended June 30, 2011, the Company repurchased 597,026 of the Parent Company’s common stock at an aggregate purchase price of $28.4 million and a weighted average price per share of $47.55 pursuant to the share repurchase program. For the six months ended June 30, 2011, the Company repurchased 853,120 of the Parent Company’s common stock at an aggregate purchase price of $41.4 million and a weighted average price per share of $48.58 pursuant to the share repurchase program. Since inception, the Company has repurchased 2,258,980 shares of the Parent Company’s common stock at an aggregate purchase price of $100.5 million and a weighted average price per share of $44.43. As of June 30, 2011, approximately $49.5 million was available for future repurchases under the program.

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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 2010 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/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 on 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;

33

• our ability to maintain or improve our ratings to avoid the possibility of downgrades in our claims-paying and financial strength ratings significantly adversely affecting us, including reducing the number of insurance policies we write generally, or causing clients who require 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 A.M. Best Company;

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

• 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;

• the effect of the E.U. Directive on Solvency II on how we manage our business, capital requirements and costs associated with conducting business; 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 see “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 for niches within the overall property/casualty insurance market. Our largest product line and most long-standing area of specialization is ocean marine insurance. We have also developed specialty niches in professional liability insurance and in specialty liability insurance primarily consisting of contractors’ liability and primary and excess liability coverages.

Our underwriting segments consist of insurance company operations (“Insurance Companies”) and operations at Lloyd’s through Lloyd’s Syndicate 1221 (“Syndicate 1221”) (“Lloyd’s Operations”). The Insurance Companies consist of Navigators Insurance Company (“Navigators Insurance”), which includes our branch located in the United Kingdom (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 pursuant to a 100% quota share reinsurance agreement. Our Lloyd’s Operations include Navigators Underwriting Agency Ltd. (“NUAL”), a wholly-owned Lloyd’s underwriting agency which manages Syndicate 1221. Our 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 through Syndicate 1221. We controlled 100% of Syndicate 1221’s stamp capacity for the 2011 and 2010 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; each of which underwrites risks pursuant to binding authorities within NUAL into Syndicate 1221. We also maintain an underwriting presence in Brazil and China through our involvement with Lloyd’s.

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Catastrophe Risk Management

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, 2011, we estimate that our probable maximum pre-tax gross and net loss exposure from such an earthquake event would be approximately $164 million and $28 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.

To date losses reported to us with respect to the Japanese earthquake that occurred on March 11, 2011 have not been material. Based on the information we have received and our evaluation of the potential exposure under our insurance policies, we do not currently expect to incur material losses related to the Japanese earthquake, but information to date is limited and the situation continues to develop, so we cannot be certain that our losses from this event will not develop in a material adverse manner.

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Critical Accounting Policies

The Company’s Annual Report on Form 10-K for the year ended December 31, 2010 discloses our critical accounting policies (see 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, 2010, pages 42 through 51.

Recent Accounting Pronouncements

Refer to “Note 2: Recent Accounting Pronouncements” in the Notes to Interim Consolidated Financial Statements 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

Summary

The following is a discussion and analysis of our consolidated and segment results of operations for the three and six months ended June 30, 2011 and 2010. Earnings per share data is presented on a per diluted share basis. In presenting our financial results, we discuss our performance with reference to underwriting profit or loss and the related combined ratio, both of which are non-generally accepted accounting principles (“GAAP”) measures of underwriting profitability. We consider such measures, which may be defined differently by other companies, to be important in the understanding of our overall results of operations. 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 over 100% indicates an underwriting loss.

Consolidated Results for the Three Months Ended June 30, 2011

Net income for the three months ended June 30, 2011 was $9.5 million or $0.60 per diluted share compared to net income of $19.0 million or $1.16 per diluted share for the three months ended June 30, 2010. Included in these results were net realized gains of $1.9 million and $7.2 million after-tax for the three months ended June 30, 2011 and 2010, respectively. Our net realized gains in the second quarter 2011 resulted from the normal ongoing management of our investment portfolio. In addition, our results included net OTTI losses recognized in earnings of $0.4 million and $0.1 million after-tax for the three months ended June 30, 2011 and 2010, respectively.

36

The combined loss and expense ratio for the three months ended June 30, 2011 was 101.9% compared to 99.7% for the comparable period in 2010. Our pre-tax underwriting profit declined by $3.8 million to a $3.3 million underwriting loss for the three months ended June 30, 2011 compared to $0.5 million of underwriting profit for the same period in 2010. The decrease in pre-tax underwriting profit is primarily due to a large loss from a Gulf of Mexico drilling operation that resulted in a net impact of $6.9 million, inclusive of $4.0 million in reinstatement premiums.

Gross written premiums increased 9.9% for the three months ended June 30, 2011 primarily due to the addition of Accident and Health reinsurance and greater commercial umbrella premiums, partially offset by the run-off of our personal umbrella lines of business as well as a decline in our directors and officers liability (“D&O”) lines due to our underwriting strategy that includes a planned shift toward underwriting excess layers.

Net written premiums increased 11.1% for the three months ended June 30, 2011 due to the increase in gross writings but were tempered by the recognition of the $4.0 million of estimated reinsurance reinstatement premiums discussed above, partially offset by a reduction in our reinsurance reinstatement premium accrual by $2.3 million.

Our net investment income decreased 2.4% for the three months ended June 30, 2011. Our annualized pre-tax average investment yield, excluding net realized gains and losses and net other-than-temporary impairment losses recognized in earnings, was 3.3% for the three months ended June 30, 2011 compared to 3.6% for the comparable period in 2010 due to lower short-term yields.

The loss ratio was 65.5% for the three months ended June 30, 2011 as compared to 61.8% for the same period in 2010. The increase in the loss ratio was primarily due to the current accident year large loss activity, adverse loss development of $0.8 million in 2011, and favorable prior year development of $5.3 million in 2010. See Net Losses and Loss Adjustment Expenses section below. The net paid losses and LAE ratio for the three months ended June 30, 2011 was 59.8% compared to 61.1% for the same period in 2010.

Consolidated Results for the Six Months Ended June 30, 2011

Net income for the six months ended June 30, 2011 was $1.6 million or $0.10 per diluted share compared to net income of $36.0 million or $2.16 per diluted share for the six months ended June 30, 2010. Included in these results were net realized gains of $0.9 million and $11.1 million after-tax for the six months ended June 30, 2011 and 2010, respectively. Our net realized gains in the second quarter 2011 resulted from the normal ongoing management of our investment portfolio. In addition, our results included net OTTI losses recognized in earnings of $0.5 million and $0.2 million after-tax for the six months ended June 30, 2011 and 2010, respectively.

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The combined loss and expense ratio for the six months ended June 30, 2011 was 109.0% compared to 99.4% for the comparable period in 2010. Our pre-tax underwriting profit decreased by $31.3 million to a $29.4 million underwriting loss for the six months ended June 30, 2011 compared to $1.9 million of underwriting profit for the same period in 2010. The decrease in pre-tax underwriting profit is primarily due to:

• Large current accident year losses of $17.6 million from a North Sea drilling operation, a Gulf of Mexico drilling operation, as well as from an onshore industrial site. The North Sea drilling operation losses resulted in an $8.9 million first quarter net impact including $5.0 million of net loss and $3.9 million of reinstatement premiums. The Gulf of Mexico drilling operation losses resulted in a $6.9 million second quarter net impact inclusive of $4.0 million in reinstatement premiums. The onshore industrial site generated gross and net losses of $12.0 million and $2.4 million, respectively.

• Sliding scale commission adjustments of $2.6 million related to large loss activity that has reduced our ceding commission benefit on a large quota share treaty.

• An increase in our reinsurance reinstatement premium accrual of $5.2 million. This accrual was driven by the recognition of the effect of a shift in our Marine reinsurance protections to an excess of loss program from a quota share program. As a result of this shift and the increased frequency of severity losses in recent periods, a greater portion of our IBNR was attributable to marine and energy losses that are or will be ceded to Marine Excess of Loss Reinsurance program and such cession will trigger additional reinstatement premiums.

• Adverse loss development in our Lloyd’s Professional Liability business of $5.4 million related mostly to Errors and Omissions (“E&O”) lines for underwriting years 2006 and 2007.

Gross written premiums increased 9.8% for the six months ended June 30, 2011 primarily due to the addition of Accident and Health and Latin American reinsurance lines of business, as well as more Agriculture business within our recently established Nav Re division, partially offset by the run-off of our personal umbrella lines of business as well as a decline in our directors and officers liability (“D&O”) lines due to our underwriting strategy that includes a planned shift toward underwriting excess layers.

Net written premiums increased 6.2% for the six months ended June 30, 2011 due to the increase in gross writings but was tempered by an increase in our reinsurance reinstatement premium accrual of $5.2 million, discussed above, and $7.9 million of reinstatement premiums on current year loss activity. The increase was also tempered by the transfer of NavPac business to Tower Insurance Company of New York via a quota share on an in force basis which generated an additional $12.2 million of ceded premiums for six months ended June 30, 2011.

Our net investment income decreased 2.8% for the six months ended June 30, 2011. Our annualized pre-tax average investment yield, excluding net realized gains and losses and net other-than-temporary impairment losses recognized in earnings, was 3.3% for the six months ended June 30, 2011 compared to 3.5% for the comparable period in 2010 due to lower short-term yields.

The loss ratio was 70.7% for the six months ended June 30, 2011 as compared to 62.6% for the comparable period in 2010. The increase in the loss ratio was primarily due to the current accident year large loss activity, adverse loss development of $4.2 million in 2011, and favorable prior year development of $6.5 million in 2010. See Net Losses and Loss Adjustment Expenses section below. The net paid losses and LAE ratio for the six months ended June 30, 2011 was 59.0% compared to 60.7% for the same period in 2010.

Consolidated stockholders’ equity decreased approximately 1% to $817.9 million or $54.44 per share at June 30, 2011 compared to $829.4 million or $52.68 per share at December 31, 2010. The decrease was primarily due to the repurchase of $41.4 million of shares of our common stock, partially offset by unrealized gains on our investment portfolio.

Cash flow from operations was $14.4 million for the six months ended June 30, 2011 compared to $64.4 million for the comparable period in 2010. The decrease in cash flow from operations for the six month period was primarily due to increased paid losses.

38

REVENUES

Gross written premiums increased 9.9% and 9.8% to $278.7 million and $575.0 million, for the three and six months ended June 30, 2011, respectively, compared to $253.6 million and $523.7 million, respectively, for the comparable periods in 2010. The increases in gross written premiums were primarily related to the addition of Accident and Health and Latin American reinsurance lines of business, partially offset by the run-off of our personal umbrella lines of business as well as a decline in our directors and officers liability (“D&O”) lines due to our underwriting strategy that includes a planned shift toward underwriting excess layers.

Our Marine division saw increases in the average renewal premium rates in our Inland Marine, U.K. Marine and Lloyd’s lines of approximately 4.7%, 3.2% and 2.7%, respectively, for the three months ended June 30, 2011 compared to the same period in 2010. U.S. Marine premiums rates remained flat for the period. For our Property Casualty division, we experienced an average renewal premium rate increase in our NavTech line of approximately 5.1% for the three months ended June 30, 2011 compared to the same period in 2010, which was offset by declines in our primary and excess casualty lines of 3.7% and 4.9%, respectively. The Insurance Companies and Lloyd’s Professional Liability division overall experienced approximately 1.9% decrease in average renewal premium rates for the three months ended June 30, 2011 compared to 2010.

Our Marine division saw increases in the average renewal premium rates in our Inland Marine, U.K. Marine and Lloyd’s lines of approximately 5.0%, 3.0% and 2.3%, respectively, for the six months ended June 30, 2011 compared to the same period in 2010. U.S. Marine premiums rates remained flat for the period. For our Property Casualty division, we experienced an average renewal premium rate increase in our Navigators Technical Risk (“NavTech”) line of approximately 6.1% for the six months ended June 30, 2011 compared to the same period in 2010, which was offset by declines in our primary and excess casualty lines of 5.5% and 3.8%, respectively. The Insurance Companies and Lloyd’s Professional Liability division overall experienced approximately 2.4% decrease in average renewal premium rates for the six months ended June 30, 2011 compared to 2010.

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.

39

The following table sets forth our gross and net written premiums and net earned premiums by segment and line of business for the periods indicated:

		September 30,		September 30,			September 30,		September 30,		September 30,		September 30,			September 30,		September 30,
	Three Months Ended June 30,
	2011									2010
	Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums		Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums
	($ in thousands)
Insurance Companies:
Marine	$	58,323		21	%	$	41,802	$	41,877	$	55,204		22	%	$	37,153	$	40,554
Property Casualty		100,131		36	%		62,015		55,351		81,797		32	%		54,300		50,171
Professional Liability		28,313		10	%		19,387		17,759		33,640		13	%		19,948		19,700
Insurance Companies Total		186,767		67	%		123,204		114,987		170,641		67	%		111,401		110,425
Lloyd's Operations:
Marine		39,451		14	%		32,042		37,734		41,829		17	%		34,421		34,727
Property Casualty		42,122		15	%		22,682		16,259		29,122		11	%		13,924		10,763
Professional Liability		10,374		4	%		5,435		4,797		11,976		5	%		5,259		5,556
Lloyd’s Operations Total		91,947		33	%		60,159		58,790		82,927		33	%		53,604		51,046
Total	$	278,714		100	%	$	183,363	$	173,777	$	253,568		100	%	$	165,005	$	161,471
	Six Months Ended June 30,
	2011									2010
	Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums		Gross Written Premiums		%			Net Written Premiums		Net Earned Premiums
	( $ in thousands)
Insurance Companies:
Marine	$	128,671		22	%	$	96,020	$	82,436	$	122,730		24	%	$	88,156	$	81,648
Property Casualty		213,019		37	%		124,922		98,286		161,143		31	%		103,997		101,252
Professional Liability		51,853		9	%		33,002		33,085		64,606		12	%		40,588		38,736
Insurance Companies Total		393,543		68	%		253,944		213,807		348,479		67	%		232,741		221,636
Lloyd’s Operations:
Marine		100,606		18	%		81,713		74,712		100,970		19	%		84,063		70,287
Property Casualty		61,424		11	%		31,068		28,153		49,081		9	%		25,635		22,678
Professional Liability		19,424		3	%		9,714		9,583		25,183		5	%		11,883		10,939
Lloyd’s Operations Total		181,454		32	%		122,495		112,448		175,234		33	%		121,581		103,904
Total	$	574,997		100	%	$	376,439	$	326,255	$	523,713		100	%	$	354,322	$	325,540

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Gross Written Premiums

Insurance Companies’ Gross Written Premiums

Marine Premiums. Competition remains significant as excess capacity remains in the sector. Economic activity has been on the upswing, increasing reported exposures, which has had a positive impact on premiums. Pricing adjustments have been insignificant and have not seen any benefit from the recent catastrophes. The gross written premiums for the three and six months ended June 30, 2011 and 2010 consisted of the following:

		September 30,	September 30,			September 30,	September 30,
	Three Months Ended June 30,
	2011				2010
	($ in thousands)
Marine liability	$	20,039	34	%	$	20,966	38	%
Inland marine		7,705	13	%		7,625	14	%
Cargo		5,874	10	%		4,435	8	%
Craft/fishing vessel		5,781	10	%		5,062	9	%
Bluewater hull		5,634	10	%		5,535	10	%
Transport		5,563	10	%		3,070	6	%
P&I		3,500	6	%		3,118	6	%
Other		4,227	7	%		5,393	9	%
Total	$	58,323	100	%	$	55,204	100	%
	Six Months Ended June 30,
	2011				2010
Marine liability	$	43,456	33	%	$	45,746	38	%
Inland marine		18,356	13	%		16,517	13	%
Cargo		12,385	10	%		10,932	9	%
P&I		12,363	10	%		10,240	8	%
Craft/fishing vessel		12,361	10	%		10,656	9	%
Bluewater hull		10,192	8	%		10,159	8	%
Transport		9,839	8	%		6,747	5	%
Other		9,719	8	%		11,733	10	%
Total	$	128,671	100	%	$	122,730	100	%

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The Insurance Companies’ Marine gross written premiums for the three and six months ended June 30, 2011 increased 5.6% and 4.8%, respectively, compared to the same periods in 2010 primarily due to premium writings on new business and increased rates on renewal premiums. The Marine business experienced overall average renewal premium increases of 0.7% and 1.6% for the three and six months ended June 30, 2011, respectively.

Property Casualty Premiums. The gross written premiums for the three and six months ended June 30, 2011 and 2010 consisted of the following:

		September 30,	September 30,			September 30,	September 30,
	Three Months Ended June 30,
	2011				2010
	($ in thousands)
Commercial umbrella	$	29,088	29	%	$	20,511	25	%
Construction liability		24,470	24	%		25,285	31	%
Offshore energy		13,667	14	%		14,409	18	%
Nav Re		10,457	10	%		41	—
Primary casualty		9,233	9	%		4,733	6	%
Other		13,216	14	%		16,818	20	%
Total	$	100,131	100	%	$	81,797	100	%
	Six Months Ended June 30,
	2011				2010
Commercial umbrella	$	50,947	24	%	$	36,825	23	%
Nav Re		48,575	23	%		5,841	5	%
Construction liability		47,759	22	%		47,957	29	%
Offshore energy		25,630	12	%		23,624	15	%
Primary casualty		14,618	7	%		7,726	5	%
Other		25,490	12	%		39,170	23	%
Total	$	213,019	100	%	$	161,143	100	%

The Property Casualty gross written premiums for the three months ended June 30, 2011 increased 22.4% compared to the same period in 2010 primarily due to new business within our Nav Re division. Our commercial umbrella business line experienced growth due to strong renewal retention during the second quarter and our primary casualty line increased primarily due to significant growth in our environmental business.

For the three months ended June 30, 2011, the average renewal premium rates for most of our casualty lines, including construction liability, declined modestly. Our NavTech lines, including offshore energy, saw average renewal rate increases of approximately 5.1%.

The Property Casualty gross written premiums for the six months ended June 30, 2011 increased 32.2% compared to the same period in 2010 primarily due to new business within our Nav Re division. Our primary casualty line increased primarily due to significant growth in our environmental business and our commercial umbrella business line experienced growth in 2011 due to strong renewal retention during the second quarter. Our offshore energy line also increased due to greater demand as well as an improved pricing environment resulting from the Deepwater Horizon incident.

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For the six months ended June 30, 2011, the average renewal premium rates for most of our casualty lines including construction liability declined modestly. Our NavTech lines, including offshore energy, saw average renewal rate increases of approximately 6.1%.

Professional Liability Premiums. The gross written premiums for the three and six months ended June 30, 2011 and 2010 consisted of the following:

		September 30,	September 30,			September 30,	September 30,
	Three Months Ended June 30,
	2011				2010
	($ in thousands)
D&O (public and private)	$	12,512	45	%	$	20,753	62	%
Errors and omissions		8,055	28	%		12,080	36	%
Small lawyers		5,480	19	%		—	—
Design professional		2,221	8	%		—	—
Runoff		45	—			807	2	%
Total	$	28,313	100	%	$	33,640	100	%
	Six Months Ended June 30,
	2011				2010
D&O (public and private)	$	21,426	41	%	$	36,896	57	%
Errors and omissions		15,618	30	%		25,967	40	%
Small lawyers		10,292	20	%		—	—
Design professional		3,662	7	%		—	—
Runoff		855	2	%		1,743	3	%
Total	$	51,853	100	%	$	64,606	100	%

The Professional Liability gross written premiums for the three and six months ended June 30, 2011 decreased 15.8% and 19.7%, respectively, compared to the same periods in 2010. The decreases in D&O gross written premiums was due to our underwriting strategy that includes a planned shift toward underwriting excess layers. The net increase in the E&O gross written premiums was due to growth in our design professionals and miscellaneous professional liability lines.

For the three and six months ended June 30, 2011, the average renewal premium rates for the Professional Liability business decreased approximately 2.2% and 2.7%, respectively, compared to the same periods in 2010.

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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 £175 million ($280 million) in 2011 compared to £168 million ($251 million) in 2010.

The Lloyd’s Operations’ gross written premiums for the three and six months ended June 30, 2011 increased 10.8% and 3.5% compared to the same periods in 2010. The increase in the gross written premiums was attributable to Property Casualty premiums which are described in detail below.

Marine Premiums. The gross written premiums for the three and six months ended June 30, 2011 and 2010 consisted of the following:

		September 30,	September 30,			September 30,	September 30,
	Three Months Ended June 30,
	2011				2010
	($ in thousands)
Cargo and specie	$	16,074	41	%	$	14,128	34	%
Marine liability		14,057	35	%		13,584	32	%
Assumed reinsurance		4,339	11	%		4,034	10	%
Hull		2,783	7	%		7,834	19	%
War		2,198	6	%		2,249	5	%
Total	$	39,451	100	%	$	41,829	100	%
	Six Months Ended June 30,
	2011				2010
Marine liability	$	39,920	40	%	$	39,112	39	%
Cargo and specie		36,083	36	%		35,210	35	%
Assumed reinsurance		12,114	12	%		10,530	10	%
War		6,375	6	%		4,657	5	%
Hull		6,114	6	%		11,461	11	%
Total	$	100,606	100	%	$	100,970	100	%

The Marine gross written premium for the three and six months ended June 30, 2011 decreased 5.7% and 3.6%, respectively, compared to the same period in 2010. For the three and six months ended June 30, 2011, average renewal premium rates increased approximately 2.7% and 2.3% compared to the same period in 2010, with larger increases on our energy liability policies within marine liability.

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Property Casualty Premiums. The gross written premiums for the three and six months ended June 30, 2011 and 2010 consisted of the following:

		September 30,	September 30,			September 30,	September 30,
	Three Months Ended June 30,
	2011				2010
	($ in thousands)
Offshore energy	$	17,300	41	%	$	13,449	46	%
Onshore energy		14,280	34	%		8,359	29	%
Engineering and construction		9,290	22	%		6,214	21	%
Other		1,252	3	%		1,100	4	%
Total	$	42,122	100	%	$	29,122	100	%
	Six Months Ended June 30,
	2011				2010
Offshore energy	$	27,585	46	%	$	23,855	48	%
Onshore energy		18,647	30	%		10,671	22	%
Engineering and construction		13,746	22	%		11,173	23	%
Other		1,446	2	%		3,382	7	%
Total	$	61,424	100	%	$	49,081	100	%

The Property Casualty gross written premiums for the three and six months ended June 30, 2011 increased 44.6% and 25.2%, respectively, compared to the same periods in 2010. The increase is primarily due to greater Onshore energy premiums as a result of reduced competition that has occurred due to recent loss activity. The average renewal premium rates for the three and six months ended June 30, 2011 for our offshore energy and engineering lines both increased approximately 5.3% and 4.4%, respectively, and our onshore energy line increased approximately 3.8% and 1.7%, respectively, compared to the same periods in 2010.

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Professional Liability Premiums. The gross written premiums for the three and six months ended June 30, 2011 and 2010 consisted of the following:

		September 30,	September 30,			September 30,	September 30,
	Three Months Ended June 30,
	2011				2010
	($ in thousands)
D&O (public and private)	$	7,944	77	%	$	9,456	79	%
E&O		2,430	23	%		2,520	21	%
Total	$	10,374	100	%	$	11,976	100	%
	Six Months Ended June 30,
	2011				2010
D&O (public and private)	$	14,253	73	%	$	16,038	64	%
E&O		5,171	27	%		9,145	36	%
Total	$	19,424	100	%	$	25,183	100	%

The Professional Liability gross written premiums for the three and six months ended June 30, 2011 decreased 13.4% and 22.9%, respectively, compared to the same periods in 2010 due to competitive market conditions in both the D&O and E&O lines. The average renewal premium rates for the D&O and E&O lines decreased approximately 1.1% and 1.5% for the three and six months ended June 30, 2011 compared to the same periods in 2010, respectively.

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 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.

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 both 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 reinstatement premiums). The number of reinstatements available varies by contract.

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

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The following tables set forth our ceded written premiums by segment and major line of business for the periods indicated:

		September 30,		September 30,			September 30,		September 30,
	Three Months Ended June 30,
	2011					2010
	Ceded Written Premiums		% of Gross Written Premiums			Ceded Written Premiums		% of Gross Written Premiums
	($ in thousands)
Insurance Companies:
Marine	$	16,521		28	%	$	18,051		33	%
Property Casualty		38,116		38	%		27,497		34	%
Professional Liability		8,926		32	%		13,692		41	%
Subtotal		63,563		34	%		59,240		35	%
Lloyd’s Operations:
Marine		7,409		19	%		7,408		18	%
Property Casualty		19,440		46	%		15,198		52	%
Professional Liability		4,939		48	%		6,717		56	%
Subtotal		31,788		35	%		29,323		35	%
Total	$	95,351		34	%	$	88,563		35	%

The decrease in the percentage of total ceded written premiums to total gross written premiums for the three months ended June 30, 2011 compared to the same period in 2010 was primarily due to a mix change resulting from new business within our recently established Nav Re division where our retention ratios are higher.

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		September 30,		September 30,			September 30,		September 30,
	Six Months Ended June 30,
	2011					2010
	Ceded Written Premiums		% of Gross Written Premiums			Ceded Written Premiums		% of Gross Written Premiums
	($ in thousands)
Insurance Companies:
Marine	$	32,651		25	%	$	34,574		28	%
Property Casualty		88,097		41	%		57,146		35	%
Professional Liability		18,851		36	%		24,018		37	%
Subtotal		139,599		35	%		115,738		33	%
Lloyd’s Operations:
Marine		18,893		19	%		16,907		17	%
Property Casualty		30,356		49	%		23,446		48	%
Professional Liability		9,710		50	%		13,300		53	%
Subtotal		58,959		32	%		53,653		31	%
Total	$	198,558		35	%	$	169,391		32	%

The increase in the percentage of total ceded written premiums to total gross written premiums for the six months ended June 30, 2011 compared to the same periods in 2010 was primarily due to the $5.2 million of estimated reinsurance reinstatement premiums discussed earlier, $7.9 million of reinstatement premiums on large current year loss activity and the transfer of NavPac business to Tower Insurance Company of New York via a quota share on an in force basis which generated an additional $12.2 million of ceded premiums for six months ended June 30, 2011.

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Net Written Premiums

Net written premiums increased 11.1% and 6.2% for the three and six months ended June 30, 2011 compared to the same period in 2010. The impact of higher gross written premiums for the three and six months ended June 30, 2011 was partially offset by estimated reinsurance reinstatement premiums of $1.7 million and $13.1 million, respectively, discussed above. The increase for the six months ended June 30, 2011 was also offset by the transfer of NavPac business to Tower Insurance Company of New York via a quota share on an in force basis which generated an additional $12.2 million of ceded premiums for six months ended June 30, 2011.

Net Earned Premiums

Net earned premiums increased 7.6% and 0.2% for the three and six months ended June 30, 2011 compared to the same period in 2010 as the Nav Re premiums that are driving the increase in written premiums have not been fully earned. The increase for the six months ended June 30, 2011 was reduced by the estimated reinsurance reinstatement premiums of $13.1 million discussed above.

Net Investment Income

Our net investment income was derived from the following sources:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	($ in thousands)
Fixed maturities	$	16,844		$	17,456		$	34,034		$	35,196
Equity securities		859			673			1,642			1,229
Short-term investments		274			257			542			492
		17,977			18,386			36,218			36,917
Investment expenses		(548	)		(533	)		(1,405	)		(1,092	)
Net investment income	$	17,429		$	17,853		$	34,813		$	35,825

Net investment income decreased 2.4% and 2.8% for the three and six months ended June 30, 2011 compared to the same period in 2010 due to lower investment yields.

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Net Other-Than-Temporary Impairment Losses Recognized In Earnings

Our net other-than-temporary impairment (“OTTI”) losses recognized in earnings for the periods indicated were as follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	($ in thousands)
Fixed maturities	$	(215	)	$	(155	)	$	(226	)	$	(209	)
Equity securities		(317	)		—			(548	)		(27	)
Net other-than-temporary impairment losses recognized in earnings	$	(532	)	$	(155	)	$	(774	)	$	(236	)

For the three and six months ended June 30, 2011, we recorded net OTTI losses recognized in earnings of $0.5 million and $0.8 million, respectively, primarily related to residential mortgage-backed securities and one equity security. For the comparable periods in the prior year, we recorded $0.2 million, respectively, of net OTTI losses recognized in earnings on two residential mortgage-backed securities and one equity security.

Net Realized Gains and Losses

Our realized gains and losses for the periods indicated were as follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	($ in thousands)
Fixed maturities:
Gains	$	4,443		$	11,281		$	7,312		$	17,651
(Losses)		(2,277	)		(26	)		(6,534	)		(283	)
		2,166			11,255			778			17,368
Equity securities:
Gains		840			—			840			—
(Losses)		—			(235	)		—			(235	)
		840			(235	)		840			(235	)
Net realized gains (losses)	$	3,006		$	11,020		$	1,618		$	17,133

For the three and six months ended June 30, 2011, we recorded $3.0 million and $1.6 million of net realized gains compared to net realized gains of $11.0 million and $17.1 million for the same period in 2010. On an after-tax basis, the net realized gains for the three and six months ended June 30, 2011 were $1.9 million and $0.9 million, respectively compared to $7.2 million and $11.1 million for the same periods in 2010. We typically generate realized gains and losses as part of the normal ongoing management of our investment portfolio, and the losses recorded this period include the sale of treasuries at a loss in order to shorten our duration.

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Other Income (Expense)

Other income (expense) primarily includes 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, 2011 was 65.5% and 70.7% compared to 61.8% and 62.6% for the comparable periods in 2010. The increases in the loss ratio were primarily due to the current accident year large loss activity, adverse loss development in 2011, and favorable prior year development in 2010. The adverse prior year reserve development was $0.8 million and $4.2 million for the three and six months ended June 30, 2011 compared to favorable prior year development of $5.3 million and $6.5 million for the comparable period in 2010, which are explained in more detail later.

The following table presents our reinsurance recoverable amounts as of the dates indicated:

		September 30,		September 30,		September 30,
	June 30, 2011		December 31, 2010		Change
	($ in thousands)
Reinsurance recoverables:
Paid losses	$	65,856	$	56,658	$	9,198
Unpaid losses and LAE reserves		852,992		843,296		9,696
Total	$	918,848	$	899,954	$	18,894

The following table sets forth gross reserves for losses and LAE, reinsurance recoverable on such amounts and net losses and LAE reserves (a non-GAAP measure reconciled in the following table) as of the dates indicated:

		September 30,		September 30,		September 30,
	June 30, 2011		December 31, 2010		Change
	($ in thousands)
Gross reserves for losses and LAE	$	2,033,556	$	1,985,838	$	47,718
Less: Reinsurance recoverable on unpaid losses and LAE reserves		852,992		843,296		9,696
Net loss and LAE reserves	$	1,180,564	$	1,142,542	$	38,022

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The following tables set forth our net reported losses and LAE reserves and net incurred but not reported (“IBNR”) reserves (non-GAAP measures reconciled below) by segment and line of business as of the dates indicated:

		September 30,		September 30,		September 30,		September 30,
	June 30, 2011
	Net Reported Reserves		Net IBNR Reserves		Total Net Loss Reserves		% of IBNR to Total Net Loss Reserves
	($ in thousands)
Insurance Companies:
Marine	$	119,153	$	113,909	$	233,062		49	%
Property Casualty		160,477		307,334		467,811		66	%
Professional Liability		47,080		68,629		115,709		59	%
Total Insurance Companies		326,710		489,872		816,582		60	%
Lloyd’s Operations:
Marine		111,756		129,700		241,456		54	%
Property Casualty		37,087		28,509		65,596		43	%
Professional Liability		10,001		46,929		56,930		82	%
Total Lloyd’s Operations		158,844		205,138		363,982		56	%
Total	$	485,554	$	695,010	$	1,180,564		59	%
	December 31, 2010
	Net Reported Reserves		Net IBNR Reserves		Total Net Loss Reserves		% of IBNR to Total Net Loss Reserves
	($ in thousands)
Insurance Companies:
Marine	$	107,147	$	109,361	$	216,508		51	%
Property Casualty		158,740		308,613		467,353		66	%
Professional Liability		46,096		78,469		124,565		63	%
Total Insurance Companies		311,983		496,443		808,426		61	%
Lloyd’s Operations:
Marine		111,914		112,708		224,622		50	%
Property Casualty		30,327		29,792		60,119		50	%
Professional Liability		9,904		39,471		49,375		80	%
Total Lloyd’s Operations		152,145		181,971		334,116		54	%
Total	$	464,128	$	678,414	$	1,142,542		59	%

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The increase in net loss reserves is generally a reflection of the growth in net premium volume over the last three years coupled with a changing mix of business to longer-tail lines of business such as the specialty lines of business (construction defect, commercial excess, primary excess), professional liability lines of business and marine liability and transport business in ocean marine. These lines of business, which typically have a longer settlement period compared to the mix of business we have historically written, are becoming larger components of our overall business.

Our reserving practices and the establishment of any particular reserve reflect management’s judgment and do not represent any admission of liability with respect to any claims made against us. No assurance can be given that actual claims made and related payments will not be in excess of the amounts reserved. During the loss settlement period, it often becomes necessary to refine and adjust the estimates of liability on a claim either upward or downward. Even after such adjustments, ultimate liability may exceed or be less than the revised estimates. The process of establishing loss reserves is complex and imprecise as it must take into account many variables that are subject to the outcome of future events. As a result, informed subjective judgments as to our ultimate exposure to losses are an integral component of our loss reserving process. Our actuaries generally calculate the IBNR loss reserves for each line of business by underwriting year for major products using standard actuarial methodologies. This process requires the substantial use of informed judgment and is inherently uncertain.

There are instances in which facts and circumstances require a deviation from the general process described above. Three such instances relate to the IBNR loss reserve processes for our 2008 Hurricane losses, our 2005 Hurricanes losses and our asbestos exposures, where extrapolation techniques are not applied, except in a limited way, given the unique nature of hurricane losses and limited population of marine excess policies with potential asbestos exposures. In such circumstances, inventories of the policy limits exposed to losses coupled with reported losses are analyzed and evaluated principally by claims personnel and underwriters to establish IBNR loss reserves.

For additional information regarding our accounting policies regarding net losses and loss adjustment expenses, please see our Critical Accounting Policies in our 2010 Annual Report on Form 10-K for the year ended December 31, 2010, pages 42 to 49.

Hurricanes Katrina, Rita, Gustav, and Ike

During the 2005 third quarter, we incurred gross and net losses and LAE of $471.0 million and $22.3 million, respectively, exclusive of $14.5 million for the cost of excess of loss reinstatement premiums, related to Hurricanes Katrina and Rita.

For the year ended December 31, 2008, we incurred gross and net losses and LAE of $114.0 million and $17.2 million, respectively, exclusive of $12.2 million for the cost of excess of loss reinstatement premiums, related to Hurricanes Gustav and Ike.

We review the gross loss reserves for the events each quarter and the ending gross and net loss reserves as of June 30, 2011 were $54.1 million and $1.4 million, respectively.

Approximately $55.7 million and $73.5 million of paid and unpaid losses at June 30, 2011 and December 31, 2010, respectively, were due from reinsurers as a result of the losses from Hurricanes Katrina, Rita, Gustav and Ike.

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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 reserves, management, in consultation with our actuaries, may determine, based on their judgment that certain assumptions made in the reserving process in prior 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, 2011 and 2010 is as follows:

		September 30,			September 30,
	Three Months Ended June 30,
	2011			2010
	($ in thousands)
Insurance Companies:
Marine	$	(171	)	$	813
Property Casualty		231			(5,753	)
Professional Liability		(197	)		96
Subtotal Insurance Companies		(137	)		(4,844	)
Lloyd’s Operations		952			(406	)
Total	$	815		$	(5,250	)

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 division we experienced adverse development in our run-off liquor liability business 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 $1.0 million of prior period net reserve deficiencies resulting from adverse development in Professional Liability driven by adverse claims movements in the E&O line of business.

For the three months ended June 30, 2010, the Insurance Companies recorded $0.8 million of prior period net reserve deficiencies for marine business resulting from $0.8 million of increased liability reserves on the 2007 underwriting year. While there was prior year loss activity on several other lines, none of the activity was significant.

For the three months ended June 30, 2010, the Insurance Companies recorded $5.8 million of prior period net savings for property casualty business primarily comprised of $4.2 million of favorable development on the 2007 underwriting year for our construction liability business due to lower reported claims than expected. In addition, there was $0.9 million of favorable development in our NavTech offshore lines also due to favorable development on the 2007 underwriting year resulting from lower reported claims than expected. Partially offsetting the above were prior period net reserve deficiencies of $0.8 million in our personal umbrella lines and $0.2 million for our liquor liability lines, both of which are in run-off.

The Lloyd’s Operations recorded $0.4 million of prior period net redundancies for the three months ended June 30, 2010.

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The segment and line of business breakdowns of prior period net reserve deficiencies (redundancies) for the six months ended June 30, 2011 and 2010 is as follows:

		September 30,			September 30,
	Six Months Ended June 30,
	2011			2010
	($ in thousands)
Insurance Companies:
Marine	$	577		$	1,509
Property Casualty		984			(9,697	)
Professional Liability		(476	)		2,691
Subtotal Insurance Companies		1,085			(5,497	)
Lloyd’s Operations		3,163			(999	)
Total	$	4,248		$	(6,496	)

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 division. 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 development 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 $3.2 million of prior period net reserve deficiencies resulting from adverse development in Professional Liability driven by adverse claims movements for underwriting years in the E&O line of business.

For the six months ended June 30, 2010, the Insurance Companies recorded $1.5 million of prior period net reserve deficiencies for marine business resulting from $0.8 million of increased liability reserves on the 2007 underwriting year. While there was prior year loss activity on several other lines, none of the activity was significant.

For the six months ended June 30, 2010, the Insurance Companies recorded $9.7 million of prior period net savings for Property Casualty business primarily comprised of favorable development on the 2007 underwriting year for our construction liability business due to lower reported claims than expected. In addition, there was favorable development in our NavTech offshore lines also due to the 2007 underwriting year resulting from lower reported claims than expected. Partially offsetting the above were prior period net reserve deficiencies in our personal umbrella lines and our liquor liability lines, both of which are in run-off.

The Lloyd’s Operations recorded $1.0 million of prior period net redundancies for the six months ended June 30, 2010.

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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 that they relate to unearned premium. The percentage of commission expenses to net earned premiums for the three and six months ended June 30, 2011 was 16.1% and 16.6%, respectively, compared to 15.9% and 15.7% for the comparable period in 2010. The increase in the net commission ratio for the three months ended June 30, 2011 was attributable to lower net earned premiums resulting from $1.7 million of reinsurance reinstatement costs as discussed above. The increase in the net commission ratio for the six months ended June 30, 2011 was attributable to a reduction in the ceding commission benefit related to sliding scale adjustments on our consortium quota share treaties due to large loss activity in the first quarter of 2011, as well as lower net earned premiums resulting from our reinsurance reinstatement costs of $13.1 million as discussed above.

Other Operating Expenses

Other operating expenses increased 3.7% and 4.7% for the three and six months ended June 30, 2011 compared to the same periods in 2010. The increase in other operating expenses for the three and six months ended June 30, 2011 was primarily due to investments in new underwriting teams, higher Lloyd’s charges due to greater capacity and higher compliance costs, particularly on account of the implementation of Solvency II. For the three and six months ended June 30, 2011, our operating expense ratios increased due to the explanations noted above combined with the impact of the estimated reinsurance reinstatement costs of $1.7 million and $13.1 million, respectively, resulting in lower net earned premiums which increased the operating expense ratios.

INCOME TAXES

We recorded income tax expense of $5.0 million and $0.5 million for the three and six months ended June 30, 2011, respectively, compared to $8.2 million and $14.6 million for the comparable period in 2010 resulting in effective tax rates of 34.6% and 25.1%, respectively. The sale of a significant portion of our general obligation municipal obligations in the second quarter of 2010 resulted in the increase in the effective tax rate compared to prior periods. The effective tax rate on net investment income was 28.7% and 28.6% for the three and six months ended June 30, 2011 compared to 27.2% and 25.9% for the same period in 2010. As of June 30, 2011 and December 31, 2010 the net deferred federal, foreign, state and local tax liabilities and assets were $6.9 million and $15.1 million, respectively.

We had net state and local deferred tax assets amounting to potential future tax benefits of $2.4 million and $2.2 million at June 30, 2011 and December 31, 2010, respectively. Included in the deferred tax assets are state and local net operating loss carry-forwards of $1.4 million at June 30, 2011 and December 31, 2010, respectively. 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 at June 30, 2011 expire from 2023 to 2025.

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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 Navigator’s 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 Insurance Companies’ and the Lloyd’s Operations’ results are measured by taking into account net earned premium, net loss and loss adjustment expenses, commission expenses, other operating expenses and other income (expense). The Corporate segment consists of the Parent Company’s investment income, interest expense and the related tax effect. 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.

Following are the financial results of our two underwriting segments.

Insurance Companies

The Insurance Companies consist of Navigators Insurance, 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, 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.

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The following table sets forth the results of operations for the Insurance Companies for the three and six months ended June 30, 2011 and 2010:

		September 30,			September 30,			September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,						QTD % Change			YTD % Change
	2011			2010			2011			2010
	($ in thousands)
Gross written premiums	$	186,767		$	170,641		$	393,543		$	348,479			9	%		13	%
Net written premiums		123,204			111,401			253,944			232,741			11	%		9	%
Net earned premiums		114,987			110,425			213,807			221,636			4	%		-4	%
Net losses and loss adjustment expenses		(77,330	)		(64,862	)		(152,127	)		(133,265	)		19	%		14	%
Commission expenses		(16,402	)		(14,615	)		(28,742	)		(28,977	)		12	%		-1	%
Other operating expenses		(26,516	)		(25,907	)		(53,315	)		(53,260	)		2	%		0	%
Other income (expense)		626			(114	)		2,317			(1,091	)		NM			NM
Underwriting profit (loss)		(4,635	)		4,927			(18,060	)		5,043			NM			NM
Net investment income		14,989			15,556			29,972			31,304			-4	%		-4	%
Net realized gains (losses)		3,100			10,729			2,855			15,934			NM			-82	%
Income before income taxes		13,454			31,212			14,767			52,281			-57	%		-72	%
Income tax expense		4,617			9,654			4,845			15,117			-52	%		-68	%
Net income	$	8,837		$	21,558		$	9,922		$	37,164			-59	%		-73	%
Losses and loss adjustment expenses ratio		67.3	%		58.7	%		71.2	%		60.1	%
Commission expense ratio		14.3	%		13.2	%		13.4	%		13.1	%
Other operating expense ratio (1)		22.4	%		23.6	%		23.8	%		24.5	%
Combined ratio		104.0	%		95.5	%		108.4	%		97.7	%

(1) Includes Other operating expenses and Other income (expense).

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		September 30,		September 30,		September 30,		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30, 2011
	($ in thousands)
	Net Earned Premiums		Losses and LAE Incurred		Underwriting Expenses		Underwriting Profit/(Loss)			Loss Ratio			Expense Ratio			Combined Ratio
Marine	$	41,877	$	26,808	$	15,082	$	(13	)		64.0	%		36.0	%		100.0	%
Property Casualty		55,351		38,429		20,458		(3,536	)		69.4	%		37.0	%		106.4	%
Professional Liability		17,759		12,093		6,752		(1,086	)		68.1	%		38.0	%		106.1	%
Total	$	114,987	$	77,330	$	42,292	$	(4,635	)		67.3	%		36.7	%		104.0	%
	Three Months Ended June 30, 2010
	($ in thousands)
	Net Earned Premiums		Losses and LAE Incurred		Underwriting Expenses		Underwriting Profit/(Loss)			Loss Ratio			Expense Ratio			Combined Ratio
Marine	$	40,554	$	25,521	$	14,171	$	862			62.9	%		35.0	%		97.9	%
Property Casualty		50,171		24,936		19,192		6,043			49.7	%		38.3	%		88.0	%
Professional Liability		19,700		14,405		7,273		(1,978	)		73.1	%		36.9	%		110.0	%
Total	$	110,425	$	64,862	$	40,636	$	4,927			58.7	%		36.8	%		95.5	%

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		September 30,		September 30,		September 30,		September 30,			September 30,			September 30,			September 30,
	Six Months Ended June 30, 2011
	($ in thousands)
	Net Earned Premiums		Losses and LAE Incurred		Underwriting Expenses		Underwriting Profit/(Loss)			Loss Ratio			Expense Ratio			Combined Ratio
Marine	$	82,436	$	54,806	$	28,880	$	(1,250	)		66.5	%		35.0	%		101.5	%
Property Casualty		98,286		74,364		38,056		(14,134	)		75.7	%		38.7	%		114.4	%
Professional Liability		33,085		22,957		12,804		(2,676	)		69.4	%		38.7	%		108.1	%
Total	$	213,807	$	152,127	$	79,740	$	(18,060	)		71.2	%		37.2	%		108.4	%
	Six Months Ended June 30, 2010
	($ in thousands)
	Net Earned Premiums		Losses and LAE Incurred		Underwriting Expenses		Underwriting Profit/(Loss)			Loss Ratio			Expense Ratio			Combined Ratio
Marine	$	81,648	$	51,654	$	29,099	$	895			63.3	%		35.6	%		98.9	%
Property Casualty		101,252		57,062		39,508		4,682			56.4	%		39.0	%		95.4	%
Professional Liability		38,736		24,549		14,721		(534	)		63.4	%		38.0	%		101.4	%
Total	$	221,636	$	133,265	$	83,328	$	5,043			60.1	%		37.6	%		97.7	%

Net earned premiums of the Insurance Companies increased 4.1% for the three months ended June 30, 2011 compared to the same period in 2010. The increase was primarily due to a reduction in net written premiums, primarily in our construction liability and D&O business lines during 2010. For the six months ended June 30, 2011 net earned premiums decreased 3.5% compared to the same period in 2010. The decrease was primarily due to $2.9 million of reinsurance reinstatement premiums related to ceded IBNR and $2.7 million of reinsurance reinstatement premiums related to the large loss as noted above.

The loss ratio for the three months ended June 30, 2011 was impacted by reinstatement premiums related to large loss activity of $2.7 million which served to increase the loss ratio by 2.4 points. The loss ratio for the three months ended June 30, 2010 was favorably impacted by prior period loss reserve redundancies of $4.8 million, or 4.4 loss ratio points. The loss ratio for the six months ended June 30, 2011 was impacted by the aforementioned reinstatement premiums which served to increase the loss ratio by 2.6 points and prior period loss reserve deficiencies of $1.1 million, or 0.5 loss ratio points. The loss ratio for the six months ended June 30, 2010 was impacted by prior period loss reserve redundancies of $5.5 million, or 2.5 loss ratio points.

Generally, while the Insurance Companies segment has experienced favorable prior period redundancies, the ultimate loss ratios for the recent underwriting years have been increasing due to softening market conditions for the business written during those periods.

The annualized pre-tax yields on the Insurance Companies’ investment portfolio, excluding net realized gains and losses and net OTTI losses recognized in earnings, was 3.6% for both the three and six months ended June 30, 2011, respectively, compared to 3.9% for the comparable periods in 2010. The average duration of the Insurance Companies’ invested assets was 3.8 years at June 30, 2011 and 4.4 years at June 30, 2010. Net investment income decreased for the three and six months ended June 30, 2011 compared to the same period for 2010 primarily due to a decrease in yields on investments.

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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 coverages for onshore energy business at Lloyd’s through Syndicate 1221. Our Lloyd’s Operations includes NUAL, a Lloyd’s underwriting agency which 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, 2011 and 2010:

		September 30,			September 30,			September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,						QTD % Change			YTD % Change
	2011			2010			2011			2010
				($ in thousands)
Gross written premiums	$	91,947		$	82,927		$	181,454		$	175,234			11	%		4	%
Net written premiums		60,159			53,604			122,495			121,581			12	%		1	%
Net earned premiums		58,790			51,046			112,448			103,904			15	%		8	%
Net losses and loss adjustment expenses		(36,533	)		(35,001	)		(78,524	)		(70,405	)		4	%		12	%
Commission expenses		(12,042	)		(11,402	)		(26,449	)		(22,368	)		6	%		18	%
Other operating expenses		(9,261	)		(8,617	)		(19,037	)		(15,860	)		7	%		20	%
Other income (expense)		361			(434	)		208			1,635			NM			-87	%
Underwriting profit (loss)		1,315			(4,408	)		(11,354	)		(3,094	)		NM			NM
Net investment income		2,320			2,128			4,575			4,197			9	%		9	%
Net realized gains (losses)		(798	)		19			(2,183	)		732			NM			NM
Income (loss) before income taxes		2,837			(2,261	)		(8,962	)		1,835			NM			NM
Income tax expense (benefit)		1,029			(815	)		(3,027	)		688			NM			NM
Net income (loss)	$	1,808		$	(1,446	)	$	(5,935	)	$	1,147			NM			NM
Losses and loss adjustment expenses ratio		62.1	%		68.6	%		69.8	%		67.8	%
Commission expense ratio		20.5	%		22.3	%		23.5	%		21.5	%
Other operating expense ratio (1)		15.2	%		17.7	%		16.8	%		13.7	%
Combined ratio		97.8	%		108.6	%		110.1	%		103.0	%

(1) Includes Other operating expenses and Other income (expense).

Net earned premiums of the Lloyd’s Operations increased 15.2% and 8.2% for the three and six months ended June 30, 2011 compared to the same periods in 2010. The increases were primarily due to greater written premiums during the first six months of 2011, particularly in the offshore energy and engineering and construction lines. The increase for the six months ended June 30, 2011 was partially offset by reinsurance reinstatement premiums of $2.3 million related to ceded IBNR and $1.3 million related to the large losses that reduced net earned premiums.

The increase in net commission ratios for the six months ended June 30, 2011 when compared to the same period in 2010 was attributable to $2.6 million of sliding scale adjustments on our consortium quota share treaties recorded in the first quarter of 2011 due to large loss activity, which have reduced the ceding commission benefit.

61

The loss ratio of 62.1% for the three months ended June 30, 2011 decreased by 6.5 points compared to the prior period primarily due to the increase in net earned premiums discussed above, partially offset by unfavorable loss development. The Lloyd’s Operations recognized prior year reserve deficiencies of $1.0 million, or 1.6 loss ratio points, compared to redundancies of $0.4 million, or 0.8 loss ratio points for the comparable period in 2010.

The loss ratio of 69.8% for the six months ended June 30, 2011 increased by 2.0 points compared to the prior period due to unfavorable loss development and the aforementioned reinstatement premiums. The Lloyd’s Operations recognized prior year reserve deficiencies of $3.2 million, or 2.8 loss ratio points for the six months ended June 30, 2011 compared to redundancies of $1.0 million, or 1.0 loss ratio points for the comparable period in 2010. Generally, the ultimate loss ratios for the recent underwriting years have been increasing due to softening market conditions for the business written during those periods.

The annualized pre-tax yields on the Lloyd’s Operations’ investment portfolio, excluding net realized gains and losses and net OTTI losses recognized in earnings, was 2.3% and 2.4% for the three and six months ended June 30, 2011 compared to 2.4% and 2.3% for the comparable period in 2010. The average duration of the Lloyd’s Operations’ invested assets at June 30, 2011 was 2.7 years compared to 2.0 years at June 30, 2010. Net investment income increased in the three and six months ended June 30, 2011 compared to the same period in 2010 primarily due to an increase in duration.

Investments

The following tables set forth our cash and investments as of June 30, 2011:

		September 30,		September 30,		September 30,			September 30,		September 30,
June 30, 2011	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
					($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	291,492	$	5,492	$	(610	)	$	286,610	$	—
States, municipalities and political subdivisions		374,873		15,910		(962	)		359,925		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		365,497		12,752		(864	)		353,609		—
Residential mortgage obligations		25,948		40		(2,266	)		28,174		(1,384	)
Asset-backed securities		52,559		539		(77	)		52,097		—
Commercial mortgage-backed securities		218,429		6,480		(800	)		212,749		—
Subtotal		662,433		19,811		(4,007	)		646,629		(1,384	)
Corporate bonds		518,423		14,927		(2,709	)		506,205		—
Total fixed maturities		1,847,221		56,140		(8,288	)		1,799,369		(1,384	)
Equity securities - common stocks		94,737		26,959		(257	)		68,035		—
Cash		40,340		—		—			40,340		—
Short-term investments		185,032		—		—			185,032		—
Total	$	2,167,330	$	83,099	$	(8,545	)	$	2,092,776	$	(1,384	)

62

		September 30,		September 30,		September 30,			September 30,		September 30,
December 31, 2010	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
					($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	324,145	$	5,229	$	(4,499	)	$	323,415	$	—
States, municipalities and political subdivisions		392,250		11,903		(3,805	)		384,152		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		382,628		10,127		(2,434	)		374,935		—
Residential mortgage obligations		20,463		24		(2,393	)		22,832		(1,646	)
Asset-backed securities		46,093		247		(292	)		46,138		—
Commercial mortgage-backed securities		190,015		4,804		(1,794	)		187,005		—
Subtotal		639,199		15,202		(6,913	)		630,910		(1,646	)
Corporate bonds		526,651		15,075		(5,545	)		517,121		—
Total fixed maturities		1,882,245		47,409		(20,762	)		1,855,598		(1,646	)
Equity securities - common stocks		87,258		22,475		(10	)		64,793		—
Cash		31,768		—		—			31,768		—
Short-term investments		153,057		—		—			153,057		—
Total	$	2,154,328	$	69,884	$	(20,772	)	$	2,105,216	$	(1,646	)

Invested assets increased in the first six months of 2011 primarily due to increased valuations of the investment portfolio. The annualized pre-tax yields of our investment portfolio, excluding net realized gains and losses and net OTTI losses recognized in earnings, was 3.3% for the three and six months ended June 30, 2011 compared to 3.6% and 3.5% for the three and six months ended June 30, 2010, respectively.

The tax exempt securities portion of our investment portfolio decreased $36.8 million to approximately 18.3% of the fixed maturities investment portfolio at June 30, 2011 compared to June 30, 2010. As a result, the effective tax rate on net investment income was 28.7% and 28.6% for the three and six months ended June 30, 2011 compared to 27.2% and 25.9% for the comparable 2010 period.

All fixed maturities and equity securities are carried at fair value. All prices for our fixed maturities and equity securities categorized as Level 1 or Level 2 in the fair value hierarchy, as defined in the Financial Accounts Standards Board Accounting Standards Codification 820 (“ASC 820”), Fair Value Measurements, are received from independent pricing services utilized by one of our outside investment managers whom we employ to assist us with investment accounting services. This manager utilizes a pricing committee which approves the use of one or more independent pricing service vendors. The pricing committee consists of five or more members, one from senior management and one from the accounting group with the remainder from the asset class specialists and client strategists. The pricing source of each security is determined in accordance with the pricing source procedures approved by the pricing committee. The investment manager uses supporting documentation received from the independent pricing service vendor detailing the inputs, models and processes used in the independent pricing service vendors’ evaluation process to determine the appropriate fair value hierarchy. Any pricing where the input is based solely on a broker price is deemed to be a Level 3 price.

Management has reviewed this process by which the manager determines the prices and has obtained alternative pricing to validate a sampling of the pricing and assess their reasonableness.

63

The following table presents, for each of the fair value hierarchy levels, the fair value of our fixed maturities and equity securities by asset class at June 30, 2011:

		September 30,		September 30,		September 30,		September 30,
June 30, 2011	Level 1		Level 2		Level 3		Total
			($ in thousands)
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	108,291	$	183,201	$	—	$	291,492
States, municipalities and political subdivisions		—		374,873		—		374,873
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		—		365,497		—		365,497
Residential mortgage obligations		—		25,948		—		25,948
Asset-backed securities		—		52,559		—		52,559
Commercial mortgage-backed securities		—		218,429		—		218,429
Subtotal		—		662,433		—		662,433
Corporate bonds		—		518,423		—		518,423
Total fixed maturities		108,291		1,738,930		—		1,847,221
Equity securities - common stocks		94,737		—		—		94,737
Total	$	203,028	$	1,738,930	$	—	$	1,941,958

The Company did not have any significant transfers between Level 1 and 2 for the three and six months ended June 30, 2011. The Company did not have any securities classified as Level 3 at June 30, 2011 and 2010.

The following table presents 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 and 2010.

		September 30,			September 30,
	Six Months Ended June 30,
	2011			2010
	($ in thousands)
Level 3 investments as of December 31	$	1,837		$	—
Unrealized net gains included in other comprehensive income (loss)		(26	)		—
Purchases, sales, paydowns and amortization		(4	)		—
Transfer from Level 3		(1,807	)		—
Transfer to Level 3		—			—
Level 3 investments as of June 30	$	—		$	—

64

The scheduled maturity dates for fixed maturity securities by the number of years until maturity at June 30, 2011 are shown in the following table:

		September 30,		September 30,
Period from June 30, 2011 to Maturity	Fair Value		Amortized Cost
	($ in thousands)
Due in one year or less	$	101,673	$	100,292
Due after one year through five years		544,156		528,318
Due after five years through ten years		342,481		331,505
Due after ten years		196,478		192,625
Mortgage- and asset-backed (including GNMAs)		662,433		646,629
Total	$	1,847,221	$	1,799,369

The following table sets forth our U.S. Treasury bonds, Agency bonds, and Foreign government bonds as of June 30, 2011 and December 31, 2010:

		September 30,		September 30,		September 30,			September 30,
June 30, 2011	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost
			($ in thousands)
U.S. Treasury bonds	$	108,921	$	3,418	$	(130	)	$	105,633
Agency bonds		118,792		1,514		(188	)		117,466
Foreign government bonds		63,779		560		(292	)		63,511
Total	$	291,492	$	5,492	$	(610	)	$	286,610
December 31, 2010	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost
			($ in thousands)
U.S. Treasury bonds	$	213,544	$	3,552	$	(3,554	)	$	213,546
Agency bonds		77,229		1,311		(604	)		76,522
Foreign government bonds		33,372		366		(341	)		33,347
Total	$	324,145	$	5,229	$	(4,499	)	$	323,415

65

The following table sets forth the fifteen largest holdings categorized as state, municipalities and political subdivisions by counterparty as of June 30, 2011:

		September 30,		September 30,			September 30,		September 30,
	Fair Value		Net Unrealized Gains/(Losses)			Cost or Amortized Cost		S&P Rating
			($ in thousands)
Issuers:
University of Pittsburgh	$	13,950	$	595		$	13,355		AA
New York City Transitional Finance Authority		8,798		574			8,224		AA+
Illinois Finance Authority		8,005		33			7,972		A
New York State Dormitory Authority		7,559		262			7,297		AA-
Missouri Highway and Transportation Comm		7,043		418			6,625		AA+
Delaware Transportation Authority		6,908		662			6,246		AA
Virginia College Building Authority		6,702		415			6,287		AA+
State of California		6,151		77			6,074		A-
Pennsylvania Turnpike Commission		6,096		83			6,013		A+
Energy Northwest		6,090		137			5,953		AA
New York State Thruway Authority		6,033		503			5,530		AA
New York State Environmental Facilities		5,715		301			5,414		AA+
New Mexico Finance Authority		5,543		239			5,304		AA+
City of Chicago		5,419		(228	)		5,647		A+
City of Houston, TX		5,384		67			5,317		A+
Subtotal		105,396		4,138			101,258
All Other		269,477		10,810			258,667
Total	$	374,873	$	14,948		$	359,925

66

The following table sets forth the composition of the investments categorized as states, municipalities and political subdivisions in our portfolio by generally equivalent Standard & Poor’s Rating Services (“S&P”) and Moody’s Investors Service (“Moody’s”) ratings (not all securities in our portfolio are rated by both S&P and Moody’s) at June 30, 2011. The securities that are not rated in the table below are primarily state bonds.

	September 30,		September 30,		September 30,		September 30,
Equivalent S&P Rating	Equivalent Moody’s Rating	Fair Value		Book Value		Net Unrealized Gain/(Loss)
	($ in thousands)
AAA/AA/A	Aaa/Aa/A	$	352,128	$	337,271	$	14,857
BBB	Baa		17,806		17,719		87
BB	Ba		—		—		—
B	B		—		—		—
CCC or lower	Caa or lower		—		—		—
NR	NR		4,939		4,935		4
Total		$	374,873	$	359,925	$	14,948

The following table sets forth the municipal bond holdings by sectors for June 30, 2011 and December 31, 2010:

		September 30,		September 30,			September 30,		September 30,
	June 30, 2011					December 31, 2010
Municipal Sector	Fair Value		Percent of Total			Fair Value		Percent of Total
			($ in thousands)
General Obligation	$	17,084		5	%	$	13,249		3	%
Prerefunded		16,807		4	%		14,122		4	%
Revenue		304,815		81	%		313,166		80	%
Taxable		36,167		10	%		51,713		13	%
	$	374,873		100	%	$	392,250		100	%

We own $140.0 million of municipal securities which are credit enhanced by various financial guarantors. As of June 30, 2011, 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”) and the Federal Home Loan Mortgage Corporation (“FHLMC”) 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.

67

The following tables set forth our agency mortgage-backed securities, residential mortgage obligations by those issued by the Government National Mortgage Association (“GNMA”), FNMA, FHLMC, and the quality category (prime, Alt-A and subprime) for all other such investments at June 30, 2011:

		September 30,		September 30,		September 30,			September 30,
	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost
			($ in thousands)
Agency mortgage-backed securities:
GNMA	$	112,009	$	5,147	$	(170	)	$	107,032
FNMA		189,155		6,095		(416	)		183,476
FHLMC		64,333		1,510		(278	)		63,101
Total	$	365,497	$	12,752	$	(864	)	$	353,609
	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost
			($ in thousands)
Residential mortgage obligations:
Prime	$	15,180	$	40	$	(1,752	)	$	16,892
Alt-A		2,195		—		(498	)		2,693
Subprime		—		—		—			—
Non-US RMBS		8,573		—		(16	)		8,589
Total	$	25,948	$	40	$	(2,266	)	$	28,174

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The following table sets forth the fifteen largest residential mortgage obligations as of June 30, 2011:

		September 30,		September 30,		September 30,		September 30,			September 30,		September 30,
Security Description	Issue Date		Fair Value		Book Value		Unrealized (Loss)			S&P Rating		Moody’s Rating
					($ in thousands)
Fosse Master Issuer Plc 11-1A A2		2011	$	4,494	$	4,500	$	(6	)		AAA		Aaa
Arkle Master Issuer Plc 10-2A 1A1		2010		2,498		2,500		(2	)		AAA		Aaa
GSR Mortgage Loan Trust 05-Ar6 1A1		2005		1,110		1,162		(52	)		AAA		NR
Arran Residential Mortgages Fu 11-1A A1C		2011		850		850		—			NR		Aaa
Wells Fargo Mtg Bkd Secs Tr 05 Ar4 2A2		2005		796		810		(14	)		NR		Ba2
Permanent Master Issuer Plc 11-1A 1A1		2011		599		600		(1	)		AAA		Aaa
JP Morgan Mortgage Trust 07-A3 1A1		2007		585		697		(112	)		CCC		NR
GSR Mortgage Loan Trust 06 Ar1 2A1		2006		572		659		(87	)		B+		NR
Citigroup Mtg Ln Tr Inc 04 Hyb3 1A		2004		566		572		(6	)		AA-		A3
JP Morgan Mortgage Trust 06 A4 1A1		2006		556		663		(107	)		NR		Caa2
Banc Of America Fdg Corp 05 F 4A1		2005		545		597		(52	)		CCC		Caa2
Banc Of America Fdg Corp 06 D 3A1		2006		498		576		(78	)		CCC		NR
First Horizon Mtg Pass-Th 05 Ar4 2A		2005		491		476		15			CCC		NR
Bear Stearns Adjustable Rate 06 1 A1		2006		468		615		(147	)		NR		B2
Wells Fargo Mtg Bkd Secs Tr 06 Ar6 3A		2006		463		553		(90	)		NR		B3
Subtotal				15,091		15,830		(739	)
All Other				10,857		12,344		(1,487	)
Total			$	25,948	$	28,174	$	(2,226	)

Details of the collateral of our asset-backed securities portfolio as of June 30, 2011 are presented below:

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	AAA		AA		A		BBB		BB		CCC		Total Fair Value		Total Amortized Cost		Unrealized Gain/(Loss)
							($ in thousands)
Auto Loans	$	2,458	$	3,496	$	3,701		—	$	—	$	—	$	9,655	$	9,535	$	120
Credit Cards		12,590		—		—		—		—		—		12,590		12,584		6
Miscellaneous		10,893		—		19,419		—		—		2		30,314		29,978		336
Total	$	25,941	$	3,496	$	23,120	$	—	$	—	$	2	$	52,559	$	52,097	$	462

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The commercial mortgage-backed securities are all rated investment grade by S&P or Moody’s. The following table sets forth the fifteen largest commercial mortgage backed securities as of June 30, 2011:

		September 30,		September 30,		September 30,		September 30,			September 30,			September 30,			September 30,		September 30,
Security Description	Issue Date		Fair Value		Book Value		Average Underlying LTV %			Delinq. Rate			Subord. Level			S&P Rating		Moody’s Rating
							($ in thousands)
Morgan Stanley Cap I 06 IQ12 A4		2006	$	22,473	$	22,501		73.60	%		8.77	%		28.76	%		AAA		NR
Wachovia Bk Comm Mtg Tr 06 C23 A4		2006		15,433		15,402		77.63	%		6.69	%		33.37	%		AA-		Aaa
Banc Of America Comm Mtg 06 2 A4		2006		12,173		11,953		76.53	%		11.86	%		30.92	%		AAA		NR
GSMS 2010-C1 A2		2010		8,043		8,263		53.36	%		0.00	%		18.75	%		NR		Aaa
Wachovia Bk Comm Mtg Tr 05 C18 A4		2005		7,539		6,893		77.35	%		9.12	%		35.25	%		AAA		Aaa
Four Times Square Tr 06-4TS A		2006		7,410		7,026		39.40	%		0.00	%		8.10	%		AAA		Aa1
Citigroup Comm Mtg Tr 06 C5 A4		2006		7,326		6,958		75.96	%		10.45	%		29.52	%		NR		Aaa
Credit Suisse Mortgage Capital 06-Oma B2		2006		7,021		7,144		65.71	%		0.00	%		52.76	%		NR		Aa1
LB-UBS Comm Mtg Tr 06 C7 A3		2006		6,782		6,322		74.25	%		7.91	%		30.00	%		AAA		NR
GS Mortgage Securities Corp 10-C1 B		2010		5,929		6,167		53.36	%		0.00	%		15.20	%		NR		Aa2
LB-UBS Comm Mtg Tr 06 C6 A4		2006		5,765		5,750		66.15	%		8.73	%		32.37	%		AAA		Aaa
Bear Stearns Comm Mtg Secs 06 T22 A4		2006		5,423		4,900		58.84	%		2.75	%		33.22	%		NR		Aaa
Morgan Stanley Capital I 06 Hq10 A4		2006		4,848		4,726		74.55	%		11.57	%		31.86	%		NR		Aaa
Banc of America Re-Remic Trust 11-07C1 A		2011		4,821		4,823		95.19	%		21.76	%		49.71	%		NR		Aaa
Citigroup/Deutsche Bk Comm Mtg 05 CD1 A4		2005		4,567		4,221		77.70	%		10.84	%		32.04	%		AAA		Aaa
Subtotal				125,553		123,049
All Other				92,876		89,700
Total			$	218,429	$	212,749

The following table shows the amount and percentage of our fixed maturities at June 30, 2011 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.

	September 30,		September 30,		September 30,
Rating Description	Rating	Fair Value		Percent of Total
	($ in thousands)
Extremely Strong	AAA	$	914,337		49	%
Very Strong	AA		342,974		19	%
Strong	A		465,820		25	%
Adequate	BBB		105,992		6	%
Speculative	BB & below		13,159		1	%
Not Rated	NR		4,939		—
Total	AA	$	1,847,221		100	%

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The following is a list of the top fifteen corporate bond holdings for fixed maturities at fair value at June 30, 2011. All such fixed maturities are rated investment grade by S&P and Moody’s. These holdings represent direct obligations of the issuer or its subsidiaries and exclude any government guaranteed or government sponsored organizations, securitized, credit enhanced or collateralized asset-backed or mortgage-backed securities.

		September 30,		September 30,			September 30,		September 30,
	Fair Value		Net Unrealized Gains/(Losses)			Cost or Amortized Cost		S&P Rating
	($ in thousands)
Issuers:
General Electric	$	31,154	$	1,887		$	29,267		AA
Bank of America Corp		25,627		549			25,078		A
Wells Fargo & Co		25,244		404			24,840		A+
Morgan Stanley		22,451		284			22,167		A
Barclays Plc		20,091		530			19,561		AA-
Goldman Sach Group Inc		19,813		344			19,469		A
J.P. Morgan Chase & Co		17,244		260			16,984		A+
Citigroup Inc		11,390		564			10,826		A-
Baker Hughes Inc		11,032		687			10,345		A
Deutshce Bank AG		10,319		374			9,945		AA-
Transcanada Corp		10,179		788			9,391		A-
BNP Paribas		9,782		(91	)		9,873		AA+
HSBC Holdings PLC		8,987		(69	)		9,056		AA-
Lloyds Banking Group PLC		8,985		52			8,933		AA-
Target Corp		8,238		(125	)		8,363		A-
Subtotal		240,536		6,438			234,098
All Other		277,887		5,780			272,107
Total	$	518,423	$	12,218		$	506,205

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The following table sets forth the fifteen largest equity securities holdings as of June 30, 2011:

		September 30,		September 30,		September 30,
	Fair Value		Net Unrealized Gains/(Losses)		Cost or Amortized Cost
	($ in thousands)
Issuers:
Vanguard Total Stock Market Index	$	6,053	$	2,363	$	3,690
Vanguard Emerging Market Stock Index		5,301		2,529		2,772
Vanguard Pacific Stock Index		4,795		1,446		3,349
Vanguard European Stock Index		4,698		1,673		3,025
Chevron Corp		2,854		1,109		1,745
Conocophillips		2,812		1,158		1,654
AT&T		2,485		531		1,954
HJ Heinz Co		2,448		580		1,868
General Electric Co		2,446		632		1,814
Kraft Foods Inc		2,399		749		1,650
Bristol-Myers Squibb Co		2,379		599		1,780
Diageo PLC		2,374		890		1,484
Philip Morris International Inc		2,367		947		1,420
Johnson & Johnson		2,358		295		2,063
The Boeing Co		2,347		955		1,392
Subtotal		48,116		16,456		31,660
All Other		46,621		10,246		36,375
Total	$	94,737	$	26,702	$	68,035

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The following table summarizes all securities in a gross unrealized loss position at June 30, 2011 and December 31, 2010, 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:

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	June 30, 2011						December 31, 2010
	Number of Securities		Fair Value		Gross Unrealized Loss		Number of Securities		Fair Value		Gross Unrealized Loss
	($ in thousands except # of securities)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds
0-6 Months		4	$	7,714	$	16		36	$	163,253	$	4,499
7-12 Months		16		42,623		594		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		20		50,337		610		36		163,253		4,499
States, municipalities and political subdivisions
0-6 Months		4		11,970		42		57		112,291		3,749
7-12 Months		15		19,445		870		1		1,004		20
> 12 Months		8		2,239		50		4		1,317		36
Subtotal		27		33,654		962		62		114,612		3,805
Agency mortgage-backed securities
0-6 Months		5		31,727		89		36		139,226		2,434
7-12 Months		16		41,952		775		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		21		73,679		864		36		139,226		2,434
Residential mortgage obligations
0-6 Months		9		10,986		119		3		3,215		20
7-12 Months		1		183		15		—		—		—
> 12 Months		47		12,779		2,132		52		15,939		2,373
Subtotal		57		23,948		2,266		55		19,154		2,393
Asset-backed securities
0-6 Months		8		18,225		77		7		28,175		292
7-12 Months		—		—		—		—		—		—
> 12 Months		1		2		—		1		2		—
Subtotal		9		18,227		77		8		28,177		292
Commercial mortgage-backed securities
0-6 Months		14		50,628		541		16		78,212		1,755
7-12 Months		5		11,832		240		—		—		—
> 12 Months		1		222		19		2		491		39
Subtotal		20		62,682		800		18		78,703		1,794
Corporate bonds
0-6 Months		36		60,661		667		98		214,180		5,545
7-12 Months		49		101,100		2,042		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		85		161,761		2,709		98		214,180		5,545
Total fixed maturities		239	$	424,288	$	8,288		313	$	757,305	$	20,762
Equity securities - common stocks
0-6 Months		7	$	4,743	$	257		1	$	322	$	10
7-12 Months		—		—		—		—		—		—
> 12 Months		—		—		—		—		—		—
Total equity securities		7	$	4,743	$	257		1	$	322	$	10

73

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. See Critical Accounting Estimates - Impairment of Invested Assets in our 2010 Annual Report on Form 10-K for additional information on our policies.

To determine whether the unrealized loss on structured securities is other-than-temporary, we project 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 ultimately incurs 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.

As of June 30, 2011, the largest single unrealized loss by issuer in the fixed maturities was $0.2 million.

The following table summarizes the gross unrealized investment losses by length of time where the fair value is less than 80% of amortized cost as of June 30, 2011.

Period for Which Fair Value is Less than 80% of Amortized Cost

		September 30,		September 30,		September 30,		September 30,			September 30,
	Less than 3 months		Longer than 3 months, less than 6 months		6 months or longer, less than 12 months		12 months or longer			Total
			($ in thousands)
Fixed maturities	$	—	$	—	$	—	$	(592	)	$	(592	)
Equity securities		—		—		—		—			—
Total	$	—	$	—	$	—	$	(592	)	$	(592	)

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.

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The following table shows the S&P ratings and equivalent Moody’s ratings of the fixed maturity securities in our portfolio with gross unrealized losses at June 30, 2011. Not all of the securities are rated by S&P and/or Moody’s.

	September 30,	September 30,		September 30,		September 30,			September 30,		September 30,
			Gross Unrealized Loss					Fair Value
NAIC Rating	Equivalent S&P Rating	Equivalent Moody’s Rating	Amount		Percent of Total			Amount		Percent of Total
	($ in thousands)
1	AAA/AA/A	Aaa/Aa/A	$	5,688		69	%	$	381,829		90	%
2	BBB	Baa		659		8	%		29,325		7	%
3	BB	Ba		254		3	%		1,210		0	%
4	B	B		542		7	%		3,659		1	%
5	CCC or lower	Caa or lower		1,110		13	%		6,925		2	%
6	NR	NR		35		—			1,340		—
	Total		$	8,288		100	%	$	424,288		100	%

At June 30, 2011, the gross unrealized losses in the table directly 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 $1.9 million which is rated below investment grade. The non-rated securities primarily consist of municipal bonds. 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.

The contractual maturity by the number of years until maturity for fixed maturity securities with unrealized losses at June 30, 2011 are shown in the following table:

		September 30,		September 30,			September 30,		September 30,
	Gross Unrealized Loss					Fair Value
	Amount		Percent of Total			Amount		Percent of Total
	($ in thousands)
Due in one year or less	$	—		—		$	7		—
Due after one year through five years		730		9	%		93,496		22	%
Due after five years through ten years		2,258		27	%		109,933		26	%
Due after ten years		1,293		16	%		42,316		10	%
Mortgage- and asset-backed securities		4,007		48	%		178,536		42	%
Total fixed maturity securities	$	8,288		100	%	$	424,288		100	%

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 4.3 years.

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

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	Three Months Ended June 30,								Six Months Ended June 30,
	2011				2010				2011				2010
	Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount		Number of Securities		Amount
($ in thousands, except # of securities)
Total other-than-temporary impairment losses
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		6		516		4		489		7		549		6		713
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		1		317		—		—		1		547		1		27
Total		7	$	833		4	$	489		8	$	1,096		7	$	740
Portion of loss in accumulated other comprehensive income (loss)
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				301				334				322				504
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	301			$	334			$	322			$	504
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				215				155				227				209
Asset-backed securities				—				—				—				—
Equities				317				—				547				27
Total			$	532			$	155			$	774			$	236

During the three and six months ended June 30, 2011, we recognized in earnings OTTI losses of $0.5 million and $0.8 million related to non-agency mortgage-backed securities and one equity security. During the comparable periods in 2010, we recognized in earnings OTTI losses of $0.2 million, respectively, 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.

For the three months ended June 30, 2011, OTTI losses within other comprehensive income (“OCI”) increased $0.1 million. For the six months ended June 30, 2011, OTTI losses within other comprehensive income (“OCI”) decreased $0.3 million, primarily as a result of increases in the fair value of securities previously impaired. For the comparable period in 2010, OTTI losses within OCI decreased $0.9 million and $1.9 million, respectively.

76

The following table summarizes the cumulative amounts related to our credit loss portion of the OTTI losses on debt securities held as of June 30, 2011 that we do not intend to sell and it is not more likely than not that we will not be required to sell the security prior to recovery of the amortized cost basis and for which the non-credit portion is included in other comprehensive income:

		September 30,		September 30,
	Three months ended June 30,
($ in thousands)	2011		2010
Beginning balance at April 1	$	1,669	$	2,577
Credit losses on securities not previously impaired as of April 1		—		182
Additional credit losses on securities previously impaired as of April 1		215		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759
	Six months ended June 30,
($ in thousands)	2011		2010
Beginning balance at January 1	$	1,658	$	2,523
Credit losses on securities not previously impaired as of January 1		—		236
Additional credit losses on securities previously impaired as of January 1		226		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759

Liquidity and Capital Resources

Net cash provided by operating activities was $14.4 million for the six months ended June 30, 2011 compared to $64.4 million for the same period in 2010. The decrease in cash flow from operations for the six month period was primarily due to increased paid losses as well as an increase in premiums receivable due to growth within our recently established Nav Re division. The premiums receivable for our reinsurance business remain open longer because they are collected as the underlying policies attach and are ceded to the treaties.

Net cash provided by investing activities was $34.5 million for the six months ended June 30, 2011 compared to net cash used in investing activities of $7.4 million for the same period in 2010. This change is primarily due the sale of securities to fund our share repurchase program.

Net cash used in financing activities was $40.3 million for the six months ended June 30, 2011 compared to $45.6 million for the comparable period in 2010. The use of cash primarily related to the repurchase of the Parent Company’s common stock under our share repurchase program.

At June 30, 2011, 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 $18.1 million, consists of investment grade bonds. At June 30, 2011, our portfolio had a duration of 3.6 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, 2011 and December 31, 2010, all fixed maturity securities and equity securities held by us were classified as available-for-sale.

77

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 is a letter of credit facility and replaces a $140 million credit facility agreement that expired March 31, 2011. The credit facility, which is denominated in U.S. dollars, will be utilized to fund our participation in Syndicate 1221 through letters of credit for the 2011 and 2012 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. The ability to have letters of credit outstanding under this credit facility expires on December 31, 2012. At June 30, 2011, letters of credit with an aggregate face amount of $132.3 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 at June 30, 2011.

As a result of the April 1, 2011 replacement of the expiring credit facility, the applicable margin and applicable fee rate payable under the letter of credit facility are now 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 unsecured long-term debt securities and without third-party credit enhancement and the amount of the Company’s own ‘Funds at Lloyd’s’ collateral.

Pursuant to the implementation of Lloyd’s Plan of Reconstruction and Renewal, a portion of our recoverables are now reinsured by Resolute Management Services Limited (a separate U.K. authorized reinsurance company established to reinsure outstanding liabilities of all Lloyd’s members for all risks written in the 1992 or prior years of account, previously known as Equitas).

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 those gross loss reserves at June 30, 2011 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, including pool participants, we issue quarterly settlement statements for premiums less commissions and paid loss activity, which are expected to be settled by the end of the subsequent quarter. 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 $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 monthly or 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.

78

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.

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.

Our capital resources consist of funds deployed or available to be deployed to support our business operations. At June 30, 2011 and December 31, 2010, our capital resources were as follows:

		September 30,			September 30,
	2011			2010
	($ in thousands)
Senior debt	$	115,547		$	114,138
Stockholders’ equity		817,919			829,354
Total capitalization	$	933,466		$	943,492
Ratio of debt to total capitalization		12.4	%		12.1	%

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 several 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.

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 May 2011, the Parent Company’s Board of Directors authorized an additional $50 million under the existing share repurchase program of the Company’s common stock which increased the size of the program to $150 million. This repurchase program was initially authorized in November 2009. The share repurchase program as originally approved was scheduled to expire on December 31, 2010, however, prior to its expiration, the Parent Company’s Board of Directors approved an extension to December 31, 2011.

79

Purchases are permitted from time to time at prevailing prices in open market or privately negotiated transactions through December 31, 2011. The timing and amount of purchases under the program depend on a variety of factors, including the trading price of the stock, market conditions and corporate and regulatory considerations.

For the three months ended June 30, 2011, the Company repurchased 597,026 of the Parent Company’s common stock at an aggregate purchase price of $28.4 million and a weighted average price per share of $47.55 pursuant to the share repurchase program. For the six months ended June 30, 2011, the Company repurchased 853,120 of the Parent Company’s common stock at an aggregate purchase price of $41.4 million and a weighted average price per share of $48.58 pursuant to the share repurchase program. Since inception, the Company has repurchased 2,258,980 shares of the Parent Company’s common stock at an aggregate purchase price of $100.5 million and a weighted average price per share of $44.43. As of June 30, 2011, approximately $49.5 million was available for future repurchases under the program.

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 which are now $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. Based on the December 31, 2010 surplus of Navigators Insurance, the approximate remaining maximum amount available for the payment of dividends by Navigators Insurance during 2011 without prior regulatory approval was $62.1 million. In the first six months of 2011 Navigators Insurance has declared $20 million of dividends to the Parent Company, leaving $42.1 million of remaining dividend capacity for 2011.

Condensed Parent Company balance sheets as of June 30, 2011 (unaudited) and December 31, 2010 are shown in the table below:

		September 30,		September 30,
	June 30, 2011		December 31, 2010
	($ in thousands)
Cash and investments	$	21,738	$	53,217
Investments in subsidiaries		882,121		877,999
Goodwill and other intangible assets		2,534		2,534
Other assets		29,324		12,028
Total assets	$	935,717	$	945,778
Senior Notes	$	114,206	$	114,138
Accounts payable and other liabilities		2,251		946
Accrued interest payable		1,341		1,340
Total liabilities		117,798		116,424
Stockholders’ equity		817,919		829,354
Total liabilities and stockholders’ equity	$	935,717	$	945,778

80

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 2010 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 at June 30, 2011, an assumed 5%, 10% and 15% negative currency movement would result in changes as follows:

		September 30,		September 30,			September 30,			September 30,
	USD equivalent as of June 30, 2011		Negative currency movement of
(amounts in millions)			5%			10%			15%
Cash, cash equivalents and marketable securities at fair value	$	92.3		($4.6	)		($9.2	)		($13.9	)
Premiums receivable	$	26.7		($1.3	)		($2.7	)		($4.0	)
Reinsurance recoverables on paid, unpaid losses and loss adjustment expenses	$	72.2		($3.6	)		($7.2	)		($10.8	)
Reserves for losses and loss adjustment expenses	$	177.1	$	8.9		$	17.7		$	26.6

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 first 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.

81

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 the these proceedings are 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 such 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.

In October 2010, Equitas represented by Resolute Management Services Limited (the “Resolute”) commenced litigation and arbitration proceedings (the “Resolute Proceedings”) against Navigators Management Company (“NMC”), Inc., a wholly-owned subsidiary of the Company . The arbitration demand and complaint in the Resolute Proceedings allege that NMC failed to make timely payments to Resolute under certain reinsurance agreements in connection with subrogation recoveries received by NMC with respect to several catastrophe losses that occurred in the late 1980’s and early 1990’s. Resolute alleges that it suffered damages of approximately $7.5 million as a result of the alleged delays in payment.

The Company believes that the claims of Resolute are without merit and it intends to vigorously contest the claims. While it is too early to predict with any certainty the outcome of the Resolute Proceedings, the Company believes that the ultimate outcome would not be expected to have a significant adverse effect on its results of operations, financial condition or liquidity, although an unexpected adverse resolution of the Resolute Proceedings could have a material adverse effect on the Company’s results of operations in a particular fiscal quarter or year.

Item 1A. Risk Factors

There have been no material changes from the risk factors as previously disclosed in the Company’s 2010 Annual Report on Form 10-K.

82

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

In May 2011, the Parent Company’s Board of Directors authorized an additional $50 million under the existing share repurchase program of the Company’s common stock which increased the size of the program to $150 million. This repurchase program was initially authorized in November 2009. Purchases are permitted from time to time at prevailing prices in open market or privately negotiated transactions through December 31, 2011. The timing and amount of purchases under the program depend on a variety of factors, including the trading price of the stock, market conditions and corporate and regulatory considerations.

The following presents our share repurchases under the current program for the periods indicated:

		September 30,		September 30,		September 30,		September 30,
	Total Number of Shares Purchased		Average Cost Paid Per Share		Number of Shares Purchased Under Publicly Announced Program		Dollar Value of Shares that May Yet Be Purchased Under the Program (1)
	($ in thousands, except per share)
January 2011		—		—		—	$	40,900
February 2011		28,835	$	52.24		28,835		39,397
March 2011		227,259	$	50.79		227,259		27,848
Subtotal first quarter		256,094	$	50.96		256,094
April 2011		131,469	$	51.51		131,469		21,076
May 2011		143,443	$	46.12		143,443		14,461
June 2011		322,114	$	46.58		322,114		49,459
Subtotal second quarter		597,026	$	47.55		597,026
Total 2011 activity		853,120	$	48.58		853,120

(1) Balance as of the end of the month indicated.

Item 3. Defaults Upon Senior Securities

None

Item 5. Other Information

None

83

Item 6. Exhibits

Exhibit No.	Description of Exhibit
10-1	Fifth Amended and Restated Credit Agreement among the Company and the Lenders (incorporated by reference to Form 8-K filed April 1, 2011)
11-1	Statement re 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).	*

* Included herein.

84

SIGNATURE

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

	The Navigators Group, Inc. (Registrant)
Date: August 4, 2011	/s/    FRANCIS W. MCDONNELL
	Francis W. McDonnell
	Senior Vice President and Chief Financial Officer

85

INDEX OF EXHIBITS

Exhibit No.	Description of Exhibit
10-1	Fifth Amended and Restated Credit Agreement among the Company and the Lenders (incorporated by reference to Form 8-K Filed April 1, 2011)
11-1	Statement re 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.

86

EX-11.1

Exhibit 11-1

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

COMPUTATION OF PER SHARE EARNINGS

Earnings Per Share of Common Stock and Common Stock Equivalents

($ and shares in thousands, except per share data)

		September 30,		September 30,		September 30,		September 30,
	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Net income applicable to common stockholders	$	9,504	$	18,970	$	1,611	$	36,015
Average number of common shares outstanding		15,373		16,100		15,555		16,369
Net income per share - basic	$	0.62	$	1.18	$	0.10	$	2.20
Average number of common shares outstanding		15,373		16,100		15,555		16,369
Add: Assumed exercise of stock options and vesting of stock grants		353		322		389		317
Common and common equivalent shares outstanding		15,726		16,422		15,944		16,686
Net income per share - diluted	$	0.60	$	1.16	$	0.10	$	2.16

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 4, 2011	/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, Francis W. McDonnell, 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 4, 2011	/s/ Francis W. McDonnell
	Name:	Francis W. McDonnell
	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, 2011 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 4, 2011

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, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Francis W. McDonnell, 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/ Francis W. McDonnell

Francis W. McDonnell

Senior Vice President and

Chief Financial Officer

August 4, 2011

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



CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Fixed maturities, available-for-sale, amortized cost	$ 1,799,369	$ 1,855,598
Equity securities, available-for-sale, cost	$ 68,035	$ 64,793
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	17,400,857	17,274,440
Treasury stock, shares	2,385,393	1,532,273

XML



CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Gross written premiums	$ 278,714	$ 253,568	$ 574,997	$ 523,713
Revenues:
Net written premiums	183,363	165,005	376,439	354,322
Change in unearned premiums	(9,586)	(3,534)	(50,184)	(28,782)
Net earned premiums	173,777	161,471	326,255	325,540
Net investment income	17,429	17,853	34,813	35,825
Total other-than-temporary impairment losses	(833)	(489)	(1,096)	(740)
Portion of loss recognized in other comprehensive income (before tax)	301	334	322	504
Net other-than-temporary impairment losses recognized in earnings	(532)	(155)	(774)	(236)
Net realized gains (losses)	3,006	11,020	1,618	17,133
Other income (expense)	573	(899)	1,564	171
Total revenues	194,253	189,290	363,476	378,433
Expenses:
Net losses and loss adjustment expenses	113,863	99,863	230,651	203,670
Commission expenses	28,030	25,677	54,230	50,993
Other operating expenses	35,777	34,513	72,352	69,099
Interest expense	2,047	2,044	4,093	4,088
Total expenses	179,717	162,097	361,326	327,850
Income (loss) before income taxes	14,536	27,193	2,150	50,583
Income tax expense (benefit)	5,032	8,223	539	14,568
Net income (loss)	$ 9,504	$ 18,970	$ 1,611	$ 36,015
Net income per common share:
Basic	$ 0.62	$ 1.18	$ 0.10	$ 2.20
Diluted	$ 0.60	$ 1.16	$ 0.10	$ 2.16
Average common shares outstanding:
Basic	15,373	16,100	15,555	16,369
Diluted	15,726	16,422	15,944	16,686

XML



Investments (Tables)

6 Months Ended

Jun. 30, 2011

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, 2011 and December 31, 2010. The table below includes other-than-temporarily impaired (“OTTI”) securities recognized within other comprehensive income (“OCI”).

		September 30,		September 30,		September 30,			September 30,		September 30,
June 30, 2011	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
	($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	291,492	$	5,492	$	(610	)	$	286,610	$	—
States, municipalities and political subdivisions		374,873		15,910		(962	)		359,925		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		365,497		12,752		(864	)		353,609		—
Residential mortgage obligations		25,948		40		(2,266	)		28,174		(1,384	)
Asset-backed securities		52,559		539		(77	)		52,097		—
Commercial mortgage-backed securities		218,429		6,480		(800	)		212,749		—
Subtotal		662,433		19,811		(4,007	)		646,629		(1,384	)
Corporate bonds		518,423		14,927		(2,709	)		506,205		—
Total fixed maturities		1,847,221		56,140		(8,288	)		1,799,369		(1,384	)
Equity securities - common stocks		94,737		26,959		(257	)		68,035		—
Cash		40,340		—		—			40,340		—
Short-term investments		185,032		—		—			185,032		—
Total	$	2,167,330	$	83,099	$	(8,545	)	$	2,092,776	$	(1,384	)

		September 30,		September 30,		September 30,			September 30,		September 30,
December 31, 2010	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
	($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	324,145	$	5,229	$	(4,499	)	$	323,415	$	—
States, municipalities and political subdivisions		392,250		11,903		(3,805	)		384,152		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		382,628		10,127		(2,434	)		374,935		—
Residential mortgage obligations		20,463		24		(2,393	)		22,832		(1,646	)
Asset-backed securities		46,093		247		(292	)		46,138		—
Commercial mortgage-backed securities		190,015		4,804		(1,794	)		187,005		—
Subtotal		639,199		15,202		(6,913	)		630,910		(1,646	)
Corporate bonds		526,651		15,075		(5,545	)		517,121		—
Total fixed maturities		1,882,245		47,409		(20,762	)		1,855,598		(1,646	)
Equity securities - common stocks		87,258		22,475		(10	)		64,793		—
Cash		31,768		—		—			31,768		—
Short-term investments		153,057		—		—			153,057		—
Total	$	2,154,328	$	69,884	$	(20,772	)	$	2,105,216	$	(1,646	)

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

The scheduled maturity dates for fixed maturity securities categorized by the number of years until maturity at June 30, 2011 are shown in the following table:

		September 30,		September 30,
Period from June 30, 2011 to Maturity	Fair Value		Amortized Cost
	($ in thousands)
Due in one year or less	$	101,673	$	100,292
Due after one year through five years		544,156		528,318
Due after five years through ten years		342,481		331,505
Due after ten years		196,478		192,625
Mortgage- and asset-backed (including GNMAs)		662,433		646,629
Total	$	1,847,221	$	1,799,369

Summary of 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

The following table summarizes all securities in a gross unrealized loss position at June 30, 2011 and December 31, 2010, 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.

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	June 30, 2011						December 31, 2010
	Number of Securities		Fair Value		Gross Unrealized  Loss		Number of Securities		Fair Value		Gross Unrealized Loss
	($ in thousands except # of securities)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds
0-6 Months		4	$	7,714	$	16		36	$	163,253	$	4,499
7-12 Months		16		42,623		594		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		20		50,337		610		36		163,253		4,499
States, municipalities and political subdivisions
0-6 Months		4		11,970		42		57		112,291		3,749
7-12 Months		15		19,445		870		1		1,004		20
> 12 Months		8		2,239		50		4		1,317		36
Subtotal		27		33,654		962		62		114,612		3,805
Agency mortgage-backed securities
0-6 Months		5		31,727		89		36		139,226		2,434
7-12 Months		16		41,952		775		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		21		73,679		864		36		139,226		2,434
Residential mortgage obligations
0-6 Months		9		10,986		119		3		3,215		20
7-12 Months		1		183		15		—		—		—
> 12 Months		47		12,779		2,132		52		15,939		2,373
Subtotal		57		23,948		2,266		55		19,154		2,393
Asset-backed securities
0-6 Months		8		18,225		77		7		28,175		292
7-12 Months		—		—		—		—		—		—
> 12 Months		1		2		—		1		2		—
Subtotal		9		18,227		77		8		28,177		292
Commercial mortgage-backed securities
0-6 Months		14		50,628		541		16		78,212		1,755
7-12 Months		5		11,832		240		—		—		—
> 12 Months		1		222		19		2		491		39
Subtotal		20		62,682		800		18		78,703		1,794
Corporate bonds
0-6 Months		36		60,661		667		98		214,180		5,545
7-12 Months		49		101,100		2,042		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		85		161,761		2,709		98		214,180		5,545
Total fixed maturities		239	$	424,288	$	8,288		313	$	757,305	$	20,762
Equity securities - common stocks
0-6 Months		7	$	4,743	$	257		1	$	322	$	10
7-12 Months		—		—		—		—		—		—
> 12 Months		—		—		—		—		—		—
Total equity securities		7	$	4,743	$	257		1	$	322	$	10

Summary of Activity Related to OTTI Losses

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

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	Three Months Ended								Six Months Ended
	June 30,								June 30,
	2011				2010				2011				2010
	Number of				Number of				Number of				Number of
	Securities		Amount		Securities		Amount		Securities		Amount		Securities		Amount
($ in thousands, except # of securities)
Total other-than-temporary impairment losses
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		6		516		4		489		7		549		6		713
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		1		317		—		—		1		547		1		27
Total		7	$	833		4	$	489		8	$	1,096		7	$	740
Portion of loss in accumulated other comprehensive income (loss)
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				301				334				322				504
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	301			$	334			$	322			$	504
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				215				155				227				209
Asset-backed securities				—				—				—				—
Equities				317				—				547				27
Total			$	532			$	155			$	774			$	236

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

The following tables summarize 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, 2011 and 2010 that it does not intend to sell and it is more likely than not that it will not be required to sell the security prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in other comprehensive income:

		September 30,		September 30,
	Three months ended June 30,
($ in thousands)	2011		2010
Beginning balance at April 1	$	1,669	$	2,577
Credit losses on securities not previously impaired as of April 1		—		182
Additional credit losses on securities previously impaired as of April 1		215		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759

		September 30,		September 30,
	Six months ended June 30,
($ in thousands)	2011		2010
Beginning balance at January 1	$	1,658	$	2,523
Credit losses on securities not previously impaired as of January 1		—		236
Additional credit losses on securities previously impaired as of January 1		226		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759

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

The contractual maturity categorized by the number of years until maturity for fixed maturity securities with a gross unrealized loss at June 30, 2011 are shown in the following table:

		September 30,		September 30,			September 30,		September 30,
	Gross Unrealized Loss					Fair Value
			Percent					Percent
	Amount		of Total			Amount		of Total
	($ in thousands)
Due in one year or less	$	—		—		$	7		—
Due after one year through five years		730		9	%		93,496		22	%
Due after five years through ten years		2,258		27	%		109,933		26	%
Due after ten years		1,293		16	%		42,316		10	%
Mortgage- and asset-backed securities		4,007		48	%		178,536		42	%
Total fixed maturity securities	$	8,288		100	%	$	424,288		100	%

Change in Net Unrealized Gains/(Losses)

The change in net unrealized gains/(losses) consisted of:

		September 30,			September 30,
	Six months ended June 30,
	2011			2010
	($ in thousands)
Fixed maturities	$	21,206		$	26,921
Equity securities		4,238			(5,347	)
		25,444			21,574
Deferred income tax (charged) credited		(8,573	)		(7,354	)
Change in unrealized gains (losses), net	$	16,871		$	14,220

Realized Gains and Losses

Realized gains/(losses) for the periods indicated were as follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	($ in thousands)
Fixed maturities:
Gains	$	4,443		$	11,281		$	7,312		$	17,651
(Losses)		(2,277	)		(26	)		(6,534	)		(283	)
		2,166			11,255			778			17,368
Equity securities:
Gains		840			—			840			—
(Losses)		—			(235	)		—			(235	)
		840			(235	)		840			(235	)
Net realized gains (losses)	$	3,006		$	11,020		$	1,618		$	17,133

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

The following table presents, for each of the fair value hierarchy levels as defined in ASC 820, Fair Value Measurements, the Company’s fixed maturities and equity securities by asset class that are measured at fair value at June 30, 2011 and December 31, 2010:

		September 30,		September 30,		September 30,		September 30,
June 30, 2011	Level 1		Level 2		Level 3		Total
	($ in thousands)
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	108,291	$	183,201	$	—	$	291,492
States, municipalities and political subdivisions		—		374,873		—		374,873
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		—		365,497		—		365,497
Residential mortgage obligations		—		25,948		—		25,948
Asset-backed securities		—		52,559		—		52,559
Commercial mortgage-backed securities		—		218,429		—		218,429
Subtotal		—		662,433		—		662,433
Corporate bonds		—		518,423		—		518,423
Total fixed maturities		108,291		1,738,930		—		1,847,221
Equity securities - common stocks		94,737		—		—		94,737
Total	$	203,028	$	1,738,930	$	—	$	1,941,958

		September 30,		September 30,		September 30,		September 30,
December 31, 2010	Level 1		Level 2		Level 3		Total
	($ in thousands)
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	212,933	$	111,212	$	—	$	324,145
States, municipalities and political subdivisions		—		392,250		—		392,250
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		—		382,628		—		382,628
Residential mortgage obligations		—		20,463		—		20,463
Asset-backed securities		—		46,093		—		46,093
Commercial mortgage-backed securities		—		188,178		1,837		190,015
Subtotal		—		637,362		1,837		639,199
Corporate bonds		—		526,651		—		526,651
Total fixed maturities		212,933		1,667,475		1,837		1,882,245
Equity securities - common stocks		87,258		—		—		87,258
Total	$	300,191	$	1,667,475	$	1,837	$	1,969,503

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

The following table presents 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 and 2010.

		September 30,			September 30,
	2011			2010
	($ in thousands)
Level 3 investments as of December 31	$	1,837		$	—
Unrealized net gains included in other comprehensive income (loss)		(26	)		—
Purchases, sales, paydowns and amortization		(4	)		—
Transfer from Level 3		(1,807	)		—
Transfer to Level 3		—			—
Level 3 investments as of June 30	$	—		$	—

XML



Document and Entity Information	6 Months Ended
	Jun. 30, 2011	Jul. 27, 2011
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2011
Document Fiscal Year Focus	2011
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		14,943,149

XML



Segment Revenue (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Segment Reporting Information [Line Items]
Gross written premiums	$ 278,714	$ 253,568	$ 574,997	$ 523,713
Net written premiums	183,363	165,005	376,439	354,322
Net earned premiums	173,777	161,471	326,255	325,540
Insurance Companies
Segment Reporting Information [Line Items]
Gross written premiums	186,767	170,641	393,543	348,479
Net written premiums	123,204	111,401	253,944	232,741
Net earned premiums	114,987	110,425	213,807	221,636
Insurance Companies | Marine
Segment Reporting Information [Line Items]
Gross written premiums	58,323	55,204	128,671	122,730
Net written premiums	41,802	37,153	96,020	88,156
Net earned premiums	41,877	40,554	82,436	81,648
Insurance Companies | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	100,131	81,797	213,019	161,143
Net written premiums	62,015	54,300	124,922	103,997
Net earned premiums	55,351	50,171	98,286	101,252
Insurance Companies | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	28,313	33,640	51,853	64,606
Net written premiums	19,387	19,948	33,002	40,588
Net earned premiums	17,759	19,700	33,085	38,736
Lloyd's Operations
Segment Reporting Information [Line Items]
Gross written premiums	91,947	82,927	181,454	175,234
Net written premiums	60,159	53,604	122,495	121,581
Net earned premiums	58,790	51,046	112,448	103,904
Lloyd's Operations | Marine
Segment Reporting Information [Line Items]
Gross written premiums	39,451	41,829	100,606	100,970
Net written premiums	32,042	34,421	81,713	84,063
Net earned premiums	37,734	34,727	74,712	70,287
Lloyd's Operations | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	42,122	29,122	61,424	49,081
Net written premiums	22,682	13,924	31,068	25,635
Net earned premiums	16,259	10,763	28,153	22,678
Lloyd's Operations | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	10,374	11,976	19,424	25,183
Net written premiums	5,435	5,259	9,714	11,883
Net earned premiums	4,797	5,556	9,583	10,939
Marine
Segment Reporting Information [Line Items]
Gross written premiums	97,774	97,033	229,277	223,700
Net written premiums	73,844	71,574	177,733	172,219
Net earned premiums	79,611	75,281	157,148	151,935
Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	142,253	110,919	274,443	210,224
Net written premiums	84,697	68,224	155,990	129,632
Net earned premiums	71,610	60,934	126,439	123,930
Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	38,687	45,616	71,277	89,789
Net written premiums	24,822	25,207	42,716	52,471
Net earned premiums	$ 22,556	$ 25,256	$ 42,668	$ 49,675

XML



Reinsurance Ceded

6 Months Ended

Jun. 30, 2011

Reinsurance Ceded

Note 4. Reinsurance Ceded

The Company ceded earned premiums were $82.1 million and $84.3 million for the three months ended June 30, 2011 and 2010, respectively, and were $178.1 million and $169.8 million for the six months ended June 30, 2011 and 2010, respectively. The Company ceded incurred losses were $53.1 million and $61.1 million for the three months ended June 30, 2011 and 2010, respectively, and were $127.7 million and $113.4 million for the six months ended June 30, 2011 and 2010.

The following table lists the Company’s 20 largest reinsurers measured by the amount of reinsurance recoverable for ceded losses and loss adjustment expense and ceded unearned premium (constituting approximately 74.3% of the total recoverable), together with the reinsurance recoverable and collateral at June 30, 2011, and the reinsurers’ rating from the indicated rating agency:

		September 30,		September 30,		September 30,		September 30,	September 30,	September 30,
	Reinsurance Recoverables
Reinsurer	Unearned Premium		Unpaid/Paid Losses		Total		Collateral Held (1)		Rating & Rating Agency (2)
	($ in millions)
Swiss Reinsurance America Corporation	$	6.8	$	95.7	$	102.5	$	8.2	A	AMB
Munich Reinsurance America Inc.		14.1		74.9		89.0		4.3	A+	AMB
Everest Reinsurance Company		16.3		67.5		83.8		7.7	A+	AMB
Transatlantic Reinsurance Company		17.8		65.9		83.7		6.8	A	AMB
Scor Holding (Switzerland) AG		4.2		41.6		45.8		9.2	A	AMB
Partner Reinsurance Europe		7.5		35.5		43.0		18.2	AA-	S&P
National Indemnity Company		12.7		29.6		42.3		6.1	A++	AMB
Munchener Ruckversicherungs-Gesellschaft		0.9		35.1		36.0		8.6	A+	AMB
Lloyd’s Syndicate #2003		5.4		27.0		32.4		6.1	A	AMB
Berkley Insurance Company		2.0		29.8		31.8		—	A+	AMB
General Reinsurance Corporation		0.9		30.6		31.5		1.3	A++	AMB
White Mountains Reinsurance of America		0.2		29.6		29.8		0.7	A-	AMB
Platinum Underwriters Re		1.3		25.4		26.7		3.1	A	AMB
Ace Property and Casualty Insurance Company		3.2		20.8		24.0		0.5	A+	AMB
AXIS Re Europe		5.7		18.1		23.8		6.1	A	AMB
Allied World Reinsurance		6.9		15.6		22.5		2.6	A	AMB
Validus Reinsurance Ltd.		3.0		15.7		18.7		6.4	A-	AMB
Tower Insurance Company		12.6		5.6		18.2		4.4	A-	AMB
Lloyd’s Syndicate #457		3.9		11.1		15.0		4.2	A	AMB
Lloyd’s Syndicate #4000		2.6		11.4		14.0		2.1	A	AMB
Top 20 Total		128.0		686.5		814.5		106.6
All Other		49.0		232.4		281.4		91.1
Total	$	177.0	$	918.9	$	1,095.9	$	197.7

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

(2) A.M. Best Company (^“A.M. Best”, ^“AMB”) and Standard and Poor’s Rating Services (“S&P”⁾

XML



Reinsurance Ceded - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Ceded Credit Risk [Line Items]
Ceded premiums earned	$ 82,100	$ 84,300	$ 178,100	$ 169,800
Ceded losses incurred	$ 53,100	$ 61,100	$ 127,700	$ 113,400
Percentage of reinsurance recoverable of 20 largest reinsurers			74.30%

XML



Fixed Maturities and Equity Securities by Asset Class that are Measured at Fair Value (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	$ 1,941,958	$ 1,969,503
Fixed maturities | U.S. Government Treasury bonds, agency bonds and foreign government bonds | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	108,291	212,933
Fixed maturities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	108,291	212,933
Equity Securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	94,737	87,258
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	203,028	300,191
Fixed maturities | U.S. Government Treasury bonds, agency bonds and foreign government bonds | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	183,201	111,212
Fixed maturities | States, municipalities and political subdivisions | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	374,873	392,250
Fixed maturities | Agency mortgage-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	365,497	382,628
Fixed maturities | Residential Mortgage Backed Securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	25,948	20,463
Fixed maturities | Asset-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	52,559	46,093
Fixed maturities | Commercial mortgage-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	218,429	188,178
Fixed maturities | Mortgage- and asset-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	662,433	637,362
Fixed maturities | Corporate bonds | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	518,423	526,651
Fixed maturities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	1,738,930	1,667,475
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	1,738,930	1,667,475
Fixed maturities | Commercial mortgage-backed securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value		1,837
Fixed maturities | Mortgage- and asset-backed securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value		1,837
Fixed maturities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value		1,837
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value		1,837
Fixed maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	1,847,221	1,882,245
Fixed maturities | U.S. Government 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	291,492	324,145
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	374,873	392,250
Fixed maturities | Agency mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	365,497	382,628
Fixed maturities | Residential Mortgage Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	25,948	20,463
Fixed maturities | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	52,559	46,093
Fixed maturities | Commercial mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	218,429	190,015
Fixed maturities | Mortgage- and asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	662,433	639,199
Fixed maturities | Corporate bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	518,423	526,651
Equity Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	$ 94,737	$ 87,258

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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, 2011 Investment	Jun. 30, 2010 Investment	Jun. 30, 2011 Investment	Jun. 30, 2010 Investment
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of Securities	7	4	8	7
Total other-than-temporary impairment losses	$ 833	$ 489	$ 1,096	$ 740
Portion of loss recognized in other comprehensive income (before tax)	301	334	322	504
Net other-than-temporary impairment losses recognized in earnings	532	155	774	236
Residential Mortgage Backed Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of Securities	6	4	7	6
Total other-than-temporary impairment losses	516	489	549	713
Portion of loss recognized in other comprehensive income (before tax)	301	334	322	504
Net other-than-temporary impairment losses recognized in earnings	215	155	227	209
Equity Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of Securities	1		1	1
Total other-than-temporary impairment losses	317		547	27
Net other-than-temporary impairment losses recognized in earnings	$ 317		$ 547	$ 27

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Financial Data by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010		Dec. 31, 2010
Segment Reporting Information [Line Items]
Gross written premiums	$ 278,714		$ 253,568		$ 574,997		$ 523,713
Net written premiums	183,363		165,005		376,439		354,322
Net earned premiums	173,777		161,471		326,255		325,540
Net losses and loss adjustment expenses	(113,863)		(99,863)		(230,651)		(203,670)
Commission expenses	(28,030)		(25,677)		(54,230)		(50,993)
Other operating expenses	(35,777)		(34,524)		(72,352)		(69,120)
Other income (expense)	573		(888)		1,564		192
Underwriting profit (loss)	(3,320)		519		(29,414)		1,949
Net investment income	17,429		17,853		34,813		35,825
Net realized gains (losses)	2,474		10,865		844		16,897
Interest expense	(2,047)		(2,044)		(4,093)		(4,088)
Income (loss) before income taxes	14,536		27,193		2,150		50,583
Income tax expense (benefit)	5,032		8,223		539		14,568
Net income (loss)	9,504		18,970		1,611		36,015
Identifiable assets	3,655,909	[1]	3,480,255	[1]	3,655,909	[1]	3,480,255	[1]	3,531,459
Losses and loss adjustment expenses ratio	65.50%		61.80%		70.70%		62.60%
Commission expense ratio	16.10%		15.90%		16.60%		15.70%
Other operating expense ratio	20.30%	[2]	22.00%	[2]	21.70%	[2]	21.10%	[2]
Combined ratio	101.90%		99.70%		109.00%		99.40%
Insurance Companies
Segment Reporting Information [Line Items]
Gross written premiums	186,767		170,641		393,543		348,479
Net written premiums	123,204		111,401		253,944		232,741
Net earned premiums	114,987		110,425		213,807		221,636
Net losses and loss adjustment expenses	(77,330)		(64,862)		(152,127)		(133,265)
Commission expenses	(16,402)		(14,615)		(28,742)		(28,977)
Other operating expenses	(26,516)		(25,907)		(53,315)		(53,260)
Other income (expense)	626		(114)		2,317		(1,091)
Underwriting profit (loss)	(4,635)		4,927		(18,060)		5,043
Net investment income	14,989		15,556		29,972		31,304
Net realized gains (losses)	3,100		10,729		2,855		15,934
Income (loss) before income taxes	13,454		31,212		14,767		52,281
Income tax expense (benefit)	4,617		9,654		4,845		15,117
Net income (loss)	8,837		21,558		9,922		37,164
Identifiable assets	2,681,023	[1]	2,564,004	[1]	2,681,023	[1]	2,564,004	[1]
Losses and loss adjustment expenses ratio	67.30%		58.70%		71.20%		60.10%
Commission expense ratio	14.30%		13.20%		13.40%		13.10%
Other operating expense ratio	22.40%	[2]	23.60%	[2]	23.80%	[2]	24.50%	[2]
Combined ratio	104.00%		95.50%		108.40%		97.70%
Lloyd's Operations
Segment Reporting Information [Line Items]
Gross written premiums	91,947		82,927		181,454		175,234
Net written premiums	60,159		53,604		122,495		121,581
Net earned premiums	58,790		51,046		112,448		103,904
Net losses and loss adjustment expenses	(36,533)		(35,001)		(78,524)		(70,405)
Commission expenses	(12,042)		(11,402)		(26,449)		(22,368)
Other operating expenses	(9,261)		(8,617)		(19,037)		(15,860)
Other income (expense)	361		(434)		208		1,635
Underwriting profit (loss)	1,315		(4,408)		(11,354)		(3,094)
Net investment income	2,320		2,128		4,575		4,197
Net realized gains (losses)	(798)		19		(2,183)		732
Income (loss) before income taxes	2,837		(2,261)		(8,962)		1,835
Income tax expense (benefit)	1,029		(815)		(3,027)		688
Net income (loss)	1,808		(1,446)		(5,935)		1,147
Identifiable assets	908,361	[1]	829,008	[1]	908,361	[1]	829,008	[1]
Losses and loss adjustment expenses ratio	62.10%		68.60%		69.80%		67.80%
Commission expense ratio	20.50%		22.30%		23.50%		21.50%
Other operating expense ratio	15.20%	[2]	17.70%	[2]	16.80%	[2]	13.70%	[2]
Combined ratio	97.80%		108.60%		110.10%		103.00%
Corporate
Segment Reporting Information [Line Items]
Commission expenses	414	[3]	340	[3]	961	[3]	352	[3]
Other income (expense)	(414)	[3]	(340)	[3]	(961)	[3]	(352)	[3]
Net investment income	120	[3]	169	[3]	266	[3]	324	[3]
Net realized gains (losses)	172	[3]	117	[3]	172	[3]	231	[3]
Interest expense	(2,047)	[3]	(2,044)	[3]	(4,093)	[3]	(4,088)	[3]
Income (loss) before income taxes	(1,755)	[3]	(1,758)	[3]	(3,655)	[3]	(3,533)	[3]
Income tax expense (benefit)	(614)	[3]	(616)	[3]	(1,279)	[3]	(1,237)	[3]
Net income (loss)	(1,141)	[3]	(1,142)	[3]	(2,376)	[3]	(2,296)	[3]
Identifiable assets	$ 74,326	[1],[3]	$ 70,742	[1],[3]	$ 74,326	[1],[3]	$ 70,742	[1],[3]

[1] Includes inter-segment transactions causing the row not to cross foot.

[2] Includes Other operating expenses and Other income.

[3] Includes Corporate segment intercompany eliminations.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2011

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 are 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. 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.

In October 2010, Equitas represented by Resolute Management Services Limited (the “Resolute”) commenced litigation and arbitration proceedings (the “Resolute Proceedings”) against Navigators Management Company (“NMC”) Inc., a wholly-owned subsidiary of the Company. The arbitration demand and complaint in the Resolute Proceedings allege that NMC failed to make timely payments to Resolute under certain reinsurance agreements in connection with subrogation recoveries received by NMC with respect to several catastrophe losses that occurred in the late 1980’s and early 1990’s. Resolute alleges that it suffered damages of approximately $7.5 million as a result of the alleged delays in payment.

The Company believes that the claims of Resolute are without merit and it intends to vigorously contest the claims. While it is too early to predict with any certainty the outcome of the Resolute Proceedings, the Company believes that the ultimate outcome would not be expected to have a significant adverse effect on its results of operations, financial condition or liquidity, although an unexpected adverse resolution of the Resolute Proceedings could have a material adverse effect on the Company’s results of operations in a particular fiscal quarter or year.

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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating activities:
Net income	$ 1,611	$ 36,015
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation & amortization	2,084	2,337
Deferred income taxes	(1,047)	12,438
Net realized (gains) losses	(844)	(16,897)
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	(16,952)	26,105
Reserves for losses and loss adjustment expenses	42,964	9,744
Prepaid reinsurance premiums	(19,803)	216
Unearned premiums	70,009	28,706
Premiums receivable	(84,308)	(29,710)
Deferred policy acquisition costs	(5,096)	(5,883)
Accrued investment income	1,251	2,100
Reinsurance balances payable	19,304	(4,250)
Current income taxes	(3,685)	(6,727)
Other	8,897	10,172
Net cash provided by operating activities	14,385	64,366
Fixed maturities
Redemptions and maturities	95,268	84,190
Sales	461,215	439,441
Purchases	(505,278)	(529,939)
Equity securities
Sales	2,107	899
Purchases	(5,056)	(16,761)
Change in payable for securities	17,825	10,455
Net change in short-term investments	(29,848)	5,308
Purchase of property and equipment	(1,771)	(971)
Net cash provided by (used in) investing activities	34,462	(7,378)
Financing activities:
Purchase of treasury stock	(41,442)	(46,169)
Proceeds of stock issued from employee stock purchase plan	360	415
Proceeds of stock issued from exercise of stock options	807	198
Net cash used in financing activities	(40,275)	(45,556)
Increase in cash	8,572	11,432
Cash at beginning of year	31,768	509
Cash at end of period	40,340	11,941
Supplemental cash information:
Income taxes paid, net	8,134	7,214
Interest paid	4,025	4,025
Issuance of stock to directors	$ 210	$ 180

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Scheduled Maturity Dates for Fixed Maturity Securities by Number of Years Until Maturity (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Fair Value
Due in one year or less	$ 101,673
Due after one year through five years	544,156
Due after five years through ten years	342,481
Due after ten years	196,478
Mortgage- and asset-backed (including GNMAs)	662,433
Total	1,847,221	1,882,245
Amortized Cost
Due in one year or less	100,292
Due after one year through five years	528,318
Due after five years through ten years	331,505
Due after ten years	192,625
Mortgage- and asset-backed (including GNMAs)	646,629
Total	$ 1,799,369	$ 1,855,598

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Lloyd's Syndicate 1221

6 Months Ended

Jun. 30, 2011

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 £175 million ($280 million) for the 2011 underwriting year compared to £168 million ($251 million) for the 2010 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 2011 and 2010 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, 2011, the Company had provided letters of credit of $132.3 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. The credit facility will expire on December 31, 2011. Refer to Note 11, Credit Facility for additional information. If the consortium of banks decides not to renew the credit facility, 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.

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Credit Facility

6 Months Ended

Jun. 30, 2011

Credit Facility

Note 11. Credit Facility

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 is a letter of credit facility and replaces a $140 million credit facility agreement that expired March 31, 2011. The credit facility, which is denominated in U.S. dollars, will be utilized to fund the Company’s participation in Syndicate 1221 through letters of credit for the 2011 and 2012 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. The ability to have letters of credit issued under this credit facility expires on December 31, 2012. At June 30, 2011, letters of credit with an aggregate face amount of $132.3 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 at June 30, 2011.

As a result of the April 1, 2011 replacement of the expiring credit facility, the applicable margin and applicable fee rate payable under the letter of credit facility are now based on a tiered schedule that is based on the Company’s then-current ratings issued by S&P and Moody’s Investors Service (“Moody’s”) with respect to the Company’s senior unsecured long-term debt securities and without third-party credit enhancement and the amount of the Company’s own ‘Funds at Lloyd’s’ collateral.

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Income Taxes

6 Months Ended

Jun. 30, 2011

Income Taxes

Note 7. Income Taxes

The Company is subject to the tax laws and regulations of the United States (“U.S.”) and foreign countries in which it operates. The Company files a consolidated U.S. federal tax return, which includes all domestic subsidiaries and the United Kingdom (“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 members in proportion to their participation in the relevant syndicates. The Company’s corporate members are subject to this agreement and will receive U.K. tax credits 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 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 28% rate through March 31, 2011. A finance bill was enacted in the U.K. that reduces the U.K. corporate tax rate from 28% to 26% effective April 2011. 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 $8.7 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 $0.6 million 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, assuming all foreign tax credits are realized.

A tax benefit taken in the tax return but not in the financial statements is known as an unrecognized tax benefit. The Company has no unrecognized tax benefits at June 30, 2011 and June 30, 2010. The Company did not incur any interest or penalties related to unrecognized tax benefits for the three and six months ended June 30, 2011 and 2010. 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 years 2007 and subsequent.

The Company recorded income tax expense of $5.0 million and $0.5 million for the three and six months ended June 30, 2011 compared to $8.2 million and $14.6 million for the comparable period in 2010, resulting in effective tax rates of 34.6% and 25.1% for the three and six months ended June 30, 2011 and 30.2% and 28.8% for the comparable period in 2010, respectively. The effective tax rate on net investment income was 28.7% and 28.6% for the three and six months ended June 30, 2011 compared to 27.2% and 25.9% for the same periods in 2010. The net deferred tax asset at June 30, 2011 and December 31, 2010 was $6.9 million and $15.1 million, respectively.

The Company had state and local deferred tax assets amounting to potential future tax benefits of $2.4 million and $2.2 million at June 30, 2011 and December 31, 2010, respectively. Included in the deferred tax assets are state and local net operating loss carry-forwards of $1.4 million at June 30, 2011 and December 31, 2010, respectively. 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 at June 30, 2011 expire from 2023 to 2025.

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Senior Notes due May 1, 2016 - Additional Information (Detail) (Senior Notes due May 1, 2016, USD $) In Millions, unless otherwise specified	1 Months Ended		3 Months Ended		6 Months Ended
	Apr. 30, 2009	Apr. 17, 2006	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Senior Notes due May 1, 2016
Debt Instrument [Line Items]
Principal amount of senior notes		$ 125
Interest rate stated on senior notes		7.00%
Senior notes due date		May 01, 2016
Net proceeds from issuance of senior notes		123.5
Interest payment dates on senior notes		The interest payment dates on the Senior Notes are each May 1 and November 1.
Effective interest rate related to senior notes		7.17%
Interest expense on senior notes			2.0	2.0	4.1	4.1
Fair value of senior notes			124.7		124.7		117.6
Debt instrument, covenant compliance					As of June 30, 2011, the Company was in compliance with all such covenants.
Aggregate principal amount of senior notes repurchased from unaffiliated note holder	10.0
Repurchased senior notes	7.0
Pretax gain from repurchased of senior notes	2.9
Outstanding principal amount of senior notes			$ 115		$ 115

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2011

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 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 will cliff vest in three years, generally with 50% vesting in full, while the vesting of the remaining 50% will be 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 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 were $0.5 million and $0.7 million for the three months ended June 30, 2011 and 2010, respectively, and were $1.5 million and $2.7 million for the six months ended June 30, 2011 and 2010.

The Company expensed $67,700 and $49,000 for the three months ended June 30, 2011 and 2010, respectively, and $122,900 and $96,000 for the six months ended June 30, 2011 and 2010, respectively, related to our Employee Stock Purchase Plan. In addition, $60,000 and $45,000 were expensed for the three months ended June 30, 2011 and 2010, respectively, and $120,000 and $90,000 were expensed for the six months ended June 30, 2011 and 2010, respectively, related to stock compensation to non-employee directors as part of their directors’ compensation for serving on the Parent Company’s Board of Directors.

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Net income	$ 9,504		$ 18,970		$ 1,611		$ 36,015
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments, net of tax expense (benefit) of $8,390 and $4,162 in 2011 and 2010 (For Three Months Ended), and net of tax expense (benefit) of $8,573 and $7,354 in 2011 and 2010 (For Six Months Ended), respectively	16,833	[1]	8,222	[1]	16,871	[2]	14,220	[2]
Change in foreign currency translation gains (losses), net of tax expense (benefit) of $(4) and $(554) in 2011 and 2010 (For Three Months Ended), and net of tax expense (benefit) of $359 and $234 in 2011 and 2010 (For Six Months Ended), respectively	(8)		(1,028)		923		434
Other comprehensive income (loss)	16,825		7,194		17,794		14,654
Comprehensive income	$ 26,329		$ 26,164		$ 19,405		$ 50,669

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 18,385 $ 15,281 Reclassification adjustment for net realized (gains) losses included in net income (1,913 ) 7,163 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 361 (104 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,833 $ 8,222

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 17,266 $ 25,196 Reclassification adjustment for net realized (gains) losses included in net income (913 ) 11,136 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 518 (160 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,871 $ 14,220

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Accounting Policies

6 Months Ended

Jun. 30, 2011

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 term “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 2010 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 a Gross Unrealized Loss (Detail) (Fixed maturities, USD $) In Thousands, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	$ 8,288	$ 20,762
Percent of Total Gross Unrealized Loss	100.00%
Fair Value Amount	424,288	757,305
Percent of Total Fair Value	100.00%
Due in one year or less
Schedule of Available-for-sale Securities [Line Items]
Fair Value Amount	7
Due after one year through five years
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	730
Percent of Total Gross Unrealized Loss	9.00%
Fair Value Amount	93,496
Percent of Total Fair Value	22.00%
Due after five years through ten years
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	2,258
Percent of Total Gross Unrealized Loss	27.00%
Fair Value Amount	109,933
Percent of Total Fair Value	26.00%
Due After Ten Years
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	1,293
Percent of Total Gross Unrealized Loss	16.00%
Fair Value Amount	42,316
Percent of Total Fair Value	10.00%
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Loss Amount	4,007
Percent of Total Gross Unrealized Loss	48.00%
Fair Value Amount	$ 178,536
Percent of Total Fair Value	42.00%

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Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Income Taxes [Line Items]
Undistributed earnings of non-U.S. subsidiaries			$ 8,700,000
Taxes payable on undistributed earnings	600,000		600,000
Deferred Tax Assets: State and Local	2,400,000		2,400,000		2,200,000
State and local net operating loss carry-forwards	1,400,000		1,400,000		1,400,000
Income tax (benefit) expense	5,032,000	8,223,000	539,000	14,568,000
Effective income tax rate	34.60%	30.20%	25.10%	28.80%
Net deferred tax asset	$ 6,871,000		$ 6,871,000		$ 15,141,000
Syndicate 1221 | Minimum | UNITED KINGDOM
Income Taxes [Line Items]
Foreign effective income tax rate			35.00%
UNITED KINGDOM
Income Taxes [Line Items]
Foreign effective income tax rate			35.00%
Corporate tax rate			28.00%
UNITED KINGDOM | Expected Future Tax Rate
Income Taxes [Line Items]
Corporate tax rate			26.00%
Net investment income
Income Taxes [Line Items]
Effective income tax rate	28.70%	27.20%	28.60%	25.90%
State and Local Jurisdiction
Income Taxes [Line Items]
State and local tax carry-forwards expiration dates			The Company's state and local tax carry-forwards at June 30, 2011 expire from 2023 to 2025.

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Recent Accounting Pronouncements

6 Months Ended

Jun. 30, 2011

Recent Accounting Pronouncements

Note 2. Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In January 2010, the Financial Accounting Standards Board (“FASB”) issued accounting guidance (Accounting Standards Update (“ASU”) 2010-06) which improves disclosures about fair value measurements (Accounting Standards Codification (“ASC” or “Codification”) 820-10). This guidance requires additional disclosures regarding significant transfers in and out of Levels 1 and 2 and additional disclosures regarding Level 3 purchases, sales, issuances and settlements. In addition, this guidance also requires fair value measurement disclosures for each class of assets and liabilities as well as disclosures about the valuation techniques and inputs used to measure fair value for items classified as Level 2 or Level 3. This guidance was effective as of January 1, 2010 for calendar year reporting entities with the exception of the additional disclosures about purchases, sales, issuances and settlements in the roll forward of activity in Level 3 fair value measurements which became effective as of January 1, 2011 for calendar year reporting entities. Early adoption is permitted. The Company adopted this guidance in the first quarter of 2010 with the exception of the additional disclosures about purchases, sales, issuances and settlement in the roll forward of activity in Level 3 fair value measurements, which the Company adopted in the first quarter of 2011. Adoption of this guidance did not have a material effect on the Company’s consolidated financial condition, results of operations or cash flows.

Recent Accounting Developments

In June 2011, the FASB issued accounting guidance (ASU 2011-05) that modifies the presentation requirements for comprehensive income (ASC 220). This guidance is effective as of January 1, 2012 for calendar year reporting entities. Early adoption is permitted. We are currently evaluating the potential impact of adopting this guidance on our consolidated financial condition, results of operations and cash flows.

In May 2011, the FASB issued accounting guidance (ASU 2011-04) that revises the wording used to describe fair value and the requirements for fair value measurement and disclosure (ASC 820). This guidance is effective as of January 1, 2012 for calendar year reporting entities. Early adoption is not permitted. We are currently evaluating the potential impact of adopting this guidance on our consolidated financial condition, results of operations and cash flows.

In October 2010, the FASB issued accounting guidance (ASU 2010-26) that clarifies which costs relating to the acquisition of new or renewal insurance contracts qualify for deferral (ASC 944). In addition, this guidance specifies that only costs that are related directly to the successful acquisition of new or renewal insurance contracts can be capitalized. This guidance is effective as of January 1, 2012 for calendar year reporting entities with early adoption as of January 1, 2011 permitted. The Company did not early adopt this guidance and it is currently evaluating the potential impact of adoption on its’ consolidated financial condition, results of operations and cash flows.

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Realized Gains and Losses (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Gain (Loss) on Investments [Line Items]
Net realized gains (losses)	$ 3,006	$ 11,020	$ 1,618	$ 17,133
Fixed maturities
Gain (Loss) on Investments [Line Items]
Gains	4,443	11,281	7,312	17,651
(Losses)	(2,277)	(26)	(6,534)	(283)
Net realized gains (losses)	2,166	11,255	778	17,368
Equity Securities
Gain (Loss) on Investments [Line Items]
Gains	840		840
(Losses)		(235)		(235)
Net realized gains (losses)	$ 840	$ (235)	$ 840	$ (235)

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Lists of 20 Largest Reinsurers Measured by Reinsurance Recoverable (Detail) (USD $)				6 Months Ended
	Jun. 30, 2011		Dec. 31, 2010	Jun. 30, 2011 Swiss Reinsurance America Corporation		Jun. 30, 2011 Munich Reinsurance America Inc.		Jun. 30, 2011 Everest Reinsurance Company		Jun. 30, 2011 Transatlantic Reinsurance Company		Jun. 30, 2011 Scor Holding (Switzerland) AG		Jun. 30, 2011 Partner Reinsurance Europe		Jun. 30, 2011 National Indemnity Company		Jun. 30, 2011 Munchener Ruckversicherungs-Gesellschaft		Jun. 30, 2011 Lloyd's Syndicate #2003		Jun. 30, 2011 Berkley Insurance Company		Jun. 30, 2011 General Reinsurance Corporation		Jun. 30, 2011 White Mountains Reinsurance of America		Jun. 30, 2011 Platinum Underwriters Re		Jun. 30, 2011 Ace Property and Casualty Insurance Company		Jun. 30, 2011 AXIS Re Europe		Jun. 30, 2011 Allied World Reinsurance		Jun. 30, 2011 Validus Reinsurance Ltd		Jun. 30, 2011 Tower Insurance Company		Jun. 30, 2011 Lloyd Syndicate #457		Jun. 30, 2011 Lloyd Syndicate #4000		Jun. 30, 2011 Insurance Companies		Jun. 30, 2011 All Other
Ceded Credit Risk [Line Items]
Reinsurance Recoverables Unearned Premium	$ 176,960,000		$ 156,869,000	$ 6,800,000		$ 14,100,000		$ 16,300,000		$ 17,800,000		$ 4,200,000		$ 7,500,000		$ 12,700,000		$ 900,000		$ 5,400,000		$ 2,000,000		$ 900,000		$ 200,000		$ 1,300,000		$ 3,200,000		$ 5,700,000		$ 6,900,000		$ 3,000,000		$ 12,600,000		$ 3,900,000		$ 2,600,000		$ 128,000,000		$ 49,000,000
Reinsurance Recoverables Unpaid/Paid Losses	918,900,000			95,700,000		74,900,000		67,500,000		65,900,000		41,600,000		35,500,000		29,600,000		35,100,000		27,000,000		29,800,000		30,600,000		29,600,000		25,400,000		20,800,000		18,100,000		15,600,000		15,700,000		5,600,000		11,100,000		11,400,000		686,500,000		232,400,000
Reinsurance Recoverables Total	1,095,900,000			102,500,000		89,000,000		83,800,000		83,700,000		45,800,000		43,000,000		42,300,000		36,000,000		32,400,000		31,800,000		31,500,000		29,800,000		26,700,000		24,000,000		23,800,000		22,500,000		18,700,000		18,200,000		15,000,000		14,000,000		814,500,000		281,400,000
Collateral Held	$ 197,700,000	[1]		$ 8,200,000	[1]	$ 4,300,000	[1]	$ 7,700,000	[1]	$ 6,800,000	[1]	$ 9,200,000	[1]	$ 18,200,000	[1]	$ 6,100,000	[1]	$ 8,600,000	[1]	$ 6,100,000	[1]			$ 1,300,000	[1]	$ 700,000	[1]	$ 3,100,000	[1]	$ 500,000	[1]	$ 6,100,000	[1]	$ 2,600,000	[1]	$ 6,400,000	[1]	$ 4,400,000	[1]	$ 4,200,000	[1]	$ 2,100,000	[1]	$ 106,600,000	[1]	$ 91,100,000	[1]
Rating				A	[2]	A+	[2]	A+	[2]	A	[2]	A	[2]	AA-	[2]	A++	[2]	A+	[2]	A	[2]	A+	[2]	A++	[2]	A-	[2]	A	[2]	A+	[2]	A	[2]	A	[2]	A-	[2]	A-	[2]	A	[2]	A	[2]
Rating Agency				AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	S&P	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]	AMB	[2]

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

[2] A.M. Best Company ("A.M. Best", "AMB") and Standard and Poor's Rating Services ("S&P")

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Commitments and Contingencies - Additional Information (Detail) (Pending or Threatened Litigation, USD $) In Millions	1 Months Ended
	Oct. 31, 2010
Pending or Threatened Litigation
Loss Contingencies [Line Items]
Damage sought by Resolute as a result of alleged delayed payments	$ 7.5

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Change in Net Unrealized Gains/(Losses) (Detail) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Change in unrealized gains (losses) before tax					$ 25,444		$ 21,574
Deferred income tax (charged) credited	(8,390)		(4,162)		(8,573)		(7,354)
Change in net unrealized gains (losses) on investments, net of tax	16,833	[1]	8,222	[1]	16,871	[2]	14,220	[2]
Fixed maturities
Change in unrealized gains (losses) before tax					21,206		26,921
Equity Securities
Change in unrealized gains (losses) before tax					$ 4,238		$ (5,347)

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 18,385 $ 15,281 Reclassification adjustment for net realized (gains) losses included in net income (1,913 ) 7,163 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 361 (104 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,833 $ 8,222

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 17,266 $ 25,196 Reclassification adjustment for net realized (gains) losses included in net income (913 ) 11,136 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 518 (160 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,871 $ 14,220

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Lloyd's Syndicate 1221 - Additional Information (Detail) In Millions, unless otherwise specified	1 Months Ended	6 Months Ended
	Mar. 31, 2011	Jun. 30, 2011 Lloyd's Operations Syndicate 1221 USD ($)	Jun. 30, 2011 Lloyd's Operations Syndicate 1221 GBP (£)	Jun. 30, 2010 Lloyd's Operations Syndicate 1221 USD ($)	Jun. 30, 2010 Lloyd's Operations Syndicate 1221 GBP (£)	Dec. 31, 2010 Lloyd's Operations Syndicate 1221
Ceded Credit Risk [Line Items]
Syndicate 1221's stamp capacity		$ 280	£ 175	$ 251	£ 168
Percentage control of stamp capacity		100.00%	100.00%			100.00%
Letters of credit		$ 132.3
Credit facility expiry date	2011-03-31	2011-12-31	2011-12-31

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Investments

6 Months Ended

Jun. 30, 2011

Investments

Note 10. Investments

The following tables set forth the Company’s cash and investments as of June 30, 2011 and December 31, 2010. The table below includes other-than-temporarily impaired (“OTTI”) securities recognized within other comprehensive income (“OCI”).

		September 30,		September 30,		September 30,			September 30,		September 30,
June 30, 2011	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
	($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	291,492	$	5,492	$	(610	)	$	286,610	$	—
States, municipalities and political subdivisions		374,873		15,910		(962	)		359,925		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		365,497		12,752		(864	)		353,609		—
Residential mortgage obligations		25,948		40		(2,266	)		28,174		(1,384	)
Asset-backed securities		52,559		539		(77	)		52,097		—
Commercial mortgage-backed securities		218,429		6,480		(800	)		212,749		—
Subtotal		662,433		19,811		(4,007	)		646,629		(1,384	)
Corporate bonds		518,423		14,927		(2,709	)		506,205		—
Total fixed maturities		1,847,221		56,140		(8,288	)		1,799,369		(1,384	)
Equity securities - common stocks		94,737		26,959		(257	)		68,035		—
Cash		40,340		—		—			40,340		—
Short-term investments		185,032		—		—			185,032		—
Total	$	2,167,330	$	83,099	$	(8,545	)	$	2,092,776	$	(1,384	)

		September 30,		September 30,		September 30,			September 30,		September 30,
December 31, 2010	Fair Value		Gross Unrealized Gains		Gross Unrealized (Losses)			Cost or Amortized Cost		OTTI Recognized in OCI
	($ in thousands)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	324,145	$	5,229	$	(4,499	)	$	323,415	$	—
States, municipalities and political subdivisions		392,250		11,903		(3,805	)		384,152		—
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		382,628		10,127		(2,434	)		374,935		—
Residential mortgage obligations		20,463		24		(2,393	)		22,832		(1,646	)
Asset-backed securities		46,093		247		(292	)		46,138		—
Commercial mortgage-backed securities		190,015		4,804		(1,794	)		187,005		—
Subtotal		639,199		15,202		(6,913	)		630,910		(1,646	)
Corporate bonds		526,651		15,075		(5,545	)		517,121		—
Total fixed maturities		1,882,245		47,409		(20,762	)		1,855,598		(1,646	)
Equity securities - common stocks		87,258		22,475		(10	)		64,793		—
Cash		31,768		—		—			31,768		—
Short-term investments		153,057		—		—			153,057		—
Total	$	2,154,328	$	69,884	$	(20,772	)	$	2,105,216	$	(1,646	)

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 scheduled maturity dates for fixed maturity securities categorized by the number of years until maturity at June 30, 2011 are shown in the following table:

		September 30,		September 30,
Period from June 30, 2011 to Maturity	Fair Value		Amortized Cost
	($ in thousands)
Due in one year or less	$	101,673	$	100,292
Due after one year through five years		544,156		528,318
Due after five years through ten years		342,481		331,505
Due after ten years		196,478		192,625
Mortgage- and asset-backed (including GNMAs)		662,433		646,629
Total	$	1,847,221	$	1,799,369

The following table summarizes all securities in a gross unrealized loss position at June 30, 2011 and December 31, 2010, 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.

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	June 30, 2011						December 31, 2010
	Number of Securities		Fair Value		Gross Unrealized  Loss		Number of Securities		Fair Value		Gross Unrealized Loss
	($ in thousands except # of securities)
Fixed Maturities:
U.S. Government Treasury bonds, agency bonds and foreign government bonds
0-6 Months		4	$	7,714	$	16		36	$	163,253	$	4,499
7-12 Months		16		42,623		594		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		20		50,337		610		36		163,253		4,499
States, municipalities and political subdivisions
0-6 Months		4		11,970		42		57		112,291		3,749
7-12 Months		15		19,445		870		1		1,004		20
> 12 Months		8		2,239		50		4		1,317		36
Subtotal		27		33,654		962		62		114,612		3,805
Agency mortgage-backed securities
0-6 Months		5		31,727		89		36		139,226		2,434
7-12 Months		16		41,952		775		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		21		73,679		864		36		139,226		2,434
Residential mortgage obligations
0-6 Months		9		10,986		119		3		3,215		20
7-12 Months		1		183		15		—		—		—
> 12 Months		47		12,779		2,132		52		15,939		2,373
Subtotal		57		23,948		2,266		55		19,154		2,393
Asset-backed securities
0-6 Months		8		18,225		77		7		28,175		292
7-12 Months		—		—		—		—		—		—
> 12 Months		1		2		—		1		2		—
Subtotal		9		18,227		77		8		28,177		292
Commercial mortgage-backed securities
0-6 Months		14		50,628		541		16		78,212		1,755
7-12 Months		5		11,832		240		—		—		—
> 12 Months		1		222		19		2		491		39
Subtotal		20		62,682		800		18		78,703		1,794
Corporate bonds
0-6 Months		36		60,661		667		98		214,180		5,545
7-12 Months		49		101,100		2,042		—		—		—
> 12 Months		—		—		—		—		—		—
Subtotal		85		161,761		2,709		98		214,180		5,545
Total fixed maturities		239	$	424,288	$	8,288		313	$	757,305	$	20,762
Equity securities - common stocks
0-6 Months		7	$	4,743	$	257		1	$	322	$	10
7-12 Months		—		—		—		—		—		—
> 12 Months		—		—		—		—		—		—
Total equity securities		7	$	4,743	$	257		1	$	322	$	10

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 residential mortgage obligations 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, 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 ultimately incurs 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.

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 in relation 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.

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. 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 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 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.

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

		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,		September 30,
	Three Months Ended								Six Months Ended
	June 30,								June 30,
	2011				2010				2011				2010
	Number of				Number of				Number of				Number of
	Securities		Amount		Securities		Amount		Securities		Amount		Securities		Amount
($ in thousands, except # of securities)
Total other-than-temporary impairment losses
Corporate and other bonds		—	$	—		—	$	—		—	$	—		—	$	—
Commercial mortgage-backed securities		—		—		—		—		—		—		—		—
Residential mortgage-backed securities		6		516		4		489		7		549		6		713
Asset-backed securities		—		—		—		—		—		—		—		—
Equities		1		317		—		—		1		547		1		27
Total		7	$	833		4	$	489		8	$	1,096		7	$	740
Portion of loss in accumulated other comprehensive income (loss)
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				301				334				322				504
Asset-backed securities				—				—				—				—
Equities				—				—				—				—
Total			$	301			$	334			$	322			$	504
Impairment losses recognized in earnings
Corporate and other bonds			$	—			$	—			$	—			$	—
Commercial mortgage-backed securities				—				—				—				—
Residential mortgage-backed securities				215				155				227				209
Asset-backed securities				—				—				—				—
Equities				317				—				547				27
Total			$	532			$	155			$	774			$	236

The following tables summarize 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, 2011 and 2010 that it does not intend to sell and it is more likely than not that it will not be required to sell the security prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in other comprehensive income:

		September 30,		September 30,
	Three months ended June 30,
($ in thousands)	2011		2010
Beginning balance at April 1	$	1,669	$	2,577
Credit losses on securities not previously impaired as of April 1		—		182
Additional credit losses on securities previously impaired as of April 1		215		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759

		September 30,		September 30,
	Six months ended June 30,
($ in thousands)	2011		2010
Beginning balance at January 1	$	1,658	$	2,523
Credit losses on securities not previously impaired as of January 1		—		236
Additional credit losses on securities previously impaired as of January 1		226		—
Reductions for securities sold during the period		—		—
Ending balance at June 30	$	1,884	$	2,759

For the three months ended June 30, 2011, OTTI losses within other comprehensive income (“OCI”) increased $0.1 million. For the six months ended June 30, 2011, OTTI losses within other comprehensive income (“OCI”) decreased $0.3 million, primarily as a result of increases in the fair value of securities previously impaired. For the comparable period in 2010, OTTI losses within OCI decreased $0.9 million and $1.9 million, respectively.

The contractual maturity categorized by the number of years until maturity for fixed maturity securities with a gross unrealized loss at June 30, 2011 are shown in the following table:

		September 30,		September 30,			September 30,		September 30,
	Gross Unrealized Loss					Fair Value
			Percent					Percent
	Amount		of Total			Amount		of Total
	($ in thousands)
Due in one year or less	$	—		—		$	7		—
Due after one year through five years		730		9	%		93,496		22	%
Due after five years through ten years		2,258		27	%		109,933		26	%
Due after ten years		1,293		16	%		42,316		10	%
Mortgage- and asset-backed securities		4,007		48	%		178,536		42	%
Total fixed maturity securities	$	8,288		100	%	$	424,288		100	%

The change in net unrealized gains/(losses) consisted of:

		September 30,			September 30,
	Six months ended June 30,
	2011			2010
	($ in thousands)
Fixed maturities	$	21,206		$	26,921
Equity securities		4,238			(5,347	)
		25,444			21,574
Deferred income tax (charged) credited		(8,573	)		(7,354	)
Change in unrealized gains (losses), net	$	16,871		$	14,220

Realized gains/(losses) for the periods indicated were as follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	($ in thousands)
Fixed maturities:
Gains	$	4,443		$	11,281		$	7,312		$	17,651
(Losses)		(2,277	)		(26	)		(6,534	)		(283	)
		2,166			11,255			778			17,368
Equity securities:
Gains		840			—			840			—
(Losses)		—			(235	)		—			(235	)
		840			(235	)		840			(235	)
Net realized gains (losses)	$	3,006		$	11,020		$	1,618		$	17,133

The following table presents, for each of the fair value hierarchy levels as defined in ASC 820, Fair Value Measurements, the Company’s fixed maturities and equity securities by asset class that are measured at fair value at June 30, 2011 and December 31, 2010:

		September 30,		September 30,		September 30,		September 30,
June 30, 2011	Level 1		Level 2		Level 3		Total
	($ in thousands)
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	108,291	$	183,201	$	—	$	291,492
States, municipalities and political subdivisions		—		374,873		—		374,873
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		—		365,497		—		365,497
Residential mortgage obligations		—		25,948		—		25,948
Asset-backed securities		—		52,559		—		52,559
Commercial mortgage-backed securities		—		218,429		—		218,429
Subtotal		—		662,433		—		662,433
Corporate bonds		—		518,423		—		518,423
Total fixed maturities		108,291		1,738,930		—		1,847,221
Equity securities - common stocks		94,737		—		—		94,737
Total	$	203,028	$	1,738,930	$	—	$	1,941,958

		September 30,		September 30,		September 30,		September 30,
December 31, 2010	Level 1		Level 2		Level 3		Total
	($ in thousands)
U.S. Government Treasury bonds, agency bonds and foreign government bonds	$	212,933	$	111,212	$	—	$	324,145
States, municipalities and political subdivisions		—		392,250		—		392,250
Mortgage- and asset-backed securities:
Agency mortgage-backed securities		—		382,628		—		382,628
Residential mortgage obligations		—		20,463		—		20,463
Asset-backed securities		—		46,093		—		46,093
Commercial mortgage-backed securities		—		188,178		1,837		190,015
Subtotal		—		637,362		1,837		639,199
Corporate bonds		—		526,651		—		526,651
Total fixed maturities		212,933		1,667,475		1,837		1,882,245
Equity securities - common stocks		87,258		—		—		87,258
Total	$	300,191	$	1,667,475	$	1,837	$	1,969,503

The fair value of financial instruments is determined based on the following fair value hierarchy. The fair value measurement inputs and valuation techniques are similar across all asset classes within the levels outlined below.

• 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 which 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 significant transfers between Level 1 and 2 for the three and six months ended June 30, 2011. The Company did not have any securities classified as Level 3 at June 30, 2011 and 2010.

The following table presents 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 and 2010.

		September 30,			September 30,
	2011			2010
	($ in thousands)
Level 3 investments as of December 31	$	1,837		$	—
Unrealized net gains included in other comprehensive income (loss)		(26	)		—
Purchases, sales, paydowns and amortization		(4	)		—
Transfer from Level 3		(1,807	)		—
Transfer to Level 3		—			—
Level 3 investments as of June 30	$	—		$	—

XML



Segment Information

6 Months Ended

Jun. 30, 2011

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, 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 coverage for onshore energy business at Lloyd’s of London (“Lloyd’s”) through Lloyd’s Syndicate 1221 (“Syndicate 1221”). The Company’s Lloyd’s Operations includes Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s underwriting agency that manages Syndicate 1221. The Company controlled 100% of the stamp capacity of Syndicate 1221 through its’ wholly-owned Lloyd’s corporate member in 2011 and 2010.

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

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 over 100% indicates an underwriting loss.

Financial data by segment for the three and six months ended June 30, 2011 and 2010 follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30, 2011
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
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)	$	2,681,023		$	908,361		$	74,326		$	3,655,910
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 (3)		22.4	%		15.2	%					20.3	%
Combined ratio		104.0	%		97.8	%					101.9	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

		September 30,		September 30,		September 30,
	Three Months Ended June 30, 2011
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
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

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30, 2010
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
Gross written premiums	$	170,641		$	82,927		$	—		$	253,568
Net written premiums		111,401			53,604			—			165,005
Net earned premiums		110,425			51,046			—			161,471
Net losses and loss adjustment expenses		(64,862	)		(35,001	)		—			(99,863	)
Commission expenses		(14,615	)		(11,402	)		340			(25,677	)
Other operating expenses		(25,907	)		(8,617	)		—			(34,524	)
Other income (expense)		(114	)		(434	)		(340	)		(888	)
Underwriting profit (loss)		4,927			(4,408	)		—			519
Net investment income		15,556			2,128			169			17,853
Net realized gains (losses)		10,729			19			117			10,865
Interest expense		—			—			(2,044	)		(2,044	)
Income (loss) before income taxes		31,212			(2,261	)		(1,758	)		27,193
Income tax expense (benefit)		9,654			(815	)		(616	)		8,223
Net income (loss)	$	21,558		$	(1,446	)	$	(1,142	)	$	18,970
Identifiable assets (2)	$	2,564,004		$	829,008		$	70,742		$	3,480,255
Losses and loss adjustment expenses ratio		58.7	%		68.6	%					61.8	%
Commission expense ratio		13.2	%		22.3	%					15.9	%
Other operating expense ratio (3)		23.6	%		17.7	%					22.0	%
Combined ratio		95.5	%		108.6	%					99.7	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

		September 30,		September 30,		September 30,
	Three Months Ended June 30, 2010
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
Gross written premiums:
Marine	$	55,204	$	41,829	$	97,033
Property Casualty		81,797		29,122		110,919
Professional Liability		33,640		11,976		45,616
Total	$	170,641	$	82,927	$	253,568
Net written premiums:
Marine	$	37,153	$	34,421	$	71,574
Property Casualty		54,300		13,924		68,224
Professional Liability		19,948		5,259		25,207
Total	$	111,401	$	53,604	$	165,005
Net earned premiums:
Marine	$	40,554	$	34,727	$	75,281
Property Casualty		50,171		10,763		60,934
Professional Liability		19,700		5,556		25,256
Total	$	110,425	$	51,046	$	161,471

		September 30,			September 30,			September 30,			September 30,
	Six Months Ended June 30, 2011
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
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 LAE		(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)	$	2,681,023		$	908,361		$	74,326		$	3,655,910
Loss and LAE ratio		71.2	%		69.8	%					70.7	%
Commission expense ratio		13.4	%		23.5	%					16.6	%
Other operating expense ratio (3)		23.8	%		16.8	%					21.7	%
Combined ratio		108.4	%		110.1	%					109.0	%

⁽¹⁾  Includes Corporate segment intercompany eliminations.

⁽²⁾  Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

		September 30,		September 30,		September 30,
	Six Months Ended June 30, 2011
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
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

		September 30,			September 30,			September 30,			September 30,
	Six Months Ended June 30, 2010
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
Gross written premiums	$	348,479		$	175,234		$	—		$	523,713
Net written premiums		232,741			121,581			—			354,322
Net earned premiums		221,636			103,904			—			325,540
Net losses and LAE		(133,265	)		(70,405	)		—			(203,670	)
Commission expenses		(28,977	)		(22,368	)		352			(50,993	)
Other operating expenses		(53,260	)		(15,860	)		—			(69,120	)
Other income (expense)		(1,091	)		1,635			(352	)		192
Underwriting profit (loss)		5,043			(3,094	)		—			1,949
Net investment income		31,304			4,197			324			35,825
Net realized gains (losses)		15,934			732			231			16,897
Interest expense		—			—			(4,088	)		(4,088	)
Income (loss) before income taxes		52,281			1,835			(3,533	)		50,583
Income tax expense (benefit)		15,117			688			(1,237	)		14,568
Net income (loss)	$	37,164		$	1,147		$	(2,296	)	$	36,015
Identifiable assets (2)	$	2,564,004		$	829,008		$	70,742		$	3,480,255
Loss and LAE ratio		60.1	%		67.8	%					62.6	%
Commission expense ratio		13.1	%		21.5	%					15.7	%
Other operating expense ratio (3)		24.5	%		13.7	%					21.1	%
Combined ratio		97.7	%		103.0	%					99.4	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

		September 30,		September 30,		September 30,
	Six Months Ended June 30, 2010
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
Gross written premiums:
Marine	$	122,730	$	100,970	$	223,700
Property Casualty		161,143		49,081		210,224
Professional Liability		64,606		25,183		89,789
Total	$	348,479	$	175,234	$	523,713
Net written premiums:
Marine	$	88,156	$	84,063	$	172,219
Property Casualty		103,997		25,635		129,632
Professional Liability		40,588		11,883		52,471
Total	$	232,741	$	121,581	$	354,322
Net earned premiums:
Marine	$	81,648	$	70,287	$	151,935
Property Casualty		101,252		22,678		123,930
Professional Liability		38,736		10,939		49,675
Total	$	221,636	$	103,904	$	325,540

The Insurance Companies’ net earned premiums include $25.5 million and $18.7 million of net earned premiums from the U.K. Branch for the three months ended June 30, 2011 and 2010, respectively and $42.9 million and $38.6 million of net earned premiums from the U.K. Branch for the six months ended June 30, 2011 and 2010.

XML



Segment Information (Tables)

6 Months Ended

Jun. 30, 2011

Financial Data by Segment

Financial data by segment for the three and six months ended June 30, 2011 and 2010 follows:

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30, 2011
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
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)	$	2,681,023		$	908,361		$	74,326		$	3,655,910
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 (3)		22.4	%		15.2	%					20.3	%
Combined ratio		104.0	%		97.8	%					101.9	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

		September 30,			September 30,			September 30,			September 30,
	Three Months Ended June 30, 2010
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
Gross written premiums	$	170,641		$	82,927		$	—		$	253,568
Net written premiums		111,401			53,604			—			165,005
Net earned premiums		110,425			51,046			—			161,471
Net losses and loss adjustment expenses		(64,862	)		(35,001	)		—			(99,863	)
Commission expenses		(14,615	)		(11,402	)		340			(25,677	)
Other operating expenses		(25,907	)		(8,617	)		—			(34,524	)
Other income (expense)		(114	)		(434	)		(340	)		(888	)
Underwriting profit (loss)		4,927			(4,408	)		—			519
Net investment income		15,556			2,128			169			17,853
Net realized gains (losses)		10,729			19			117			10,865
Interest expense		—			—			(2,044	)		(2,044	)
Income (loss) before income taxes		31,212			(2,261	)		(1,758	)		27,193
Income tax expense (benefit)		9,654			(815	)		(616	)		8,223
Net income (loss)	$	21,558		$	(1,446	)	$	(1,142	)	$	18,970
Identifiable assets (2)	$	2,564,004		$	829,008		$	70,742		$	3,480,255
Losses and loss adjustment expenses ratio		58.7	%		68.6	%					61.8	%
Commission expense ratio		13.2	%		22.3	%					15.9	%
Other operating expense ratio (3)		23.6	%		17.7	%					22.0	%
Combined ratio		95.5	%		108.6	%					99.7	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

		September 30,			September 30,			September 30,			September 30,
	Six Months Ended June 30, 2011
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
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 LAE		(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)	$	2,681,023		$	908,361		$	74,326		$	3,655,910
Loss and LAE ratio		71.2	%		69.8	%					70.7	%
Commission expense ratio		13.4	%		23.5	%					16.6	%
Other operating expense ratio (3)		23.8	%		16.8	%					21.7	%
Combined ratio		108.4	%		110.1	%					109.0	%

⁽¹⁾  Includes Corporate segment intercompany eliminations.

⁽²⁾  Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

		September 30,			September 30,			September 30,			September 30,
	Six Months Ended June 30, 2010
	Insurance Companies			Lloyd’s Operations			Corporate  (1)			Total
	($ in thousands)
Gross written premiums	$	348,479		$	175,234		$	—		$	523,713
Net written premiums		232,741			121,581			—			354,322
Net earned premiums		221,636			103,904			—			325,540
Net losses and LAE		(133,265	)		(70,405	)		—			(203,670	)
Commission expenses		(28,977	)		(22,368	)		352			(50,993	)
Other operating expenses		(53,260	)		(15,860	)		—			(69,120	)
Other income (expense)		(1,091	)		1,635			(352	)		192
Underwriting profit (loss)		5,043			(3,094	)		—			1,949
Net investment income		31,304			4,197			324			35,825
Net realized gains (losses)		15,934			732			231			16,897
Interest expense		—			—			(4,088	)		(4,088	)
Income (loss) before income taxes		52,281			1,835			(3,533	)		50,583
Income tax expense (benefit)		15,117			688			(1,237	)		14,568
Net income (loss)	$	37,164		$	1,147		$	(2,296	)	$	36,015
Identifiable assets (2)	$	2,564,004		$	829,008		$	70,742		$	3,480,255
Loss and LAE ratio		60.1	%		67.8	%					62.6	%
Commission expense ratio		13.1	%		21.5	%					15.7	%
Other operating expense ratio (3)		24.5	%		13.7	%					21.1	%
Combined ratio		97.7	%		103.0	%					99.4	%

⁽¹⁾ Includes Corporate segment intercompany eliminations.

⁽²⁾ Includes inter-segment transactions causing the row not to cross foot.

⁽³⁾ Includes Other operating expenses and Other income.

Segment Revenue

		September 30,		September 30,		September 30,
	Three Months Ended June 30, 2011
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
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

		September 30,		September 30,		September 30,
	Three Months Ended June 30, 2010
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
Gross written premiums:
Marine	$	55,204	$	41,829	$	97,033
Property Casualty		81,797		29,122		110,919
Professional Liability		33,640		11,976		45,616
Total	$	170,641	$	82,927	$	253,568
Net written premiums:
Marine	$	37,153	$	34,421	$	71,574
Property Casualty		54,300		13,924		68,224
Professional Liability		19,948		5,259		25,207
Total	$	111,401	$	53,604	$	165,005
Net earned premiums:
Marine	$	40,554	$	34,727	$	75,281
Property Casualty		50,171		10,763		60,934
Professional Liability		19,700		5,556		25,256
Total	$	110,425	$	51,046	$	161,471

		September 30,		September 30,		September 30,
	Six Months Ended June 30, 2011
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
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

		September 30,		September 30,		September 30,
	Six Months Ended June 30, 2010
	Insurance Companies		Lloyd’s Operations		Total
	($ in thousands)
Gross written premiums:
Marine	$	122,730	$	100,970	$	223,700
Property Casualty		161,143		49,081		210,224
Professional Liability		64,606		25,183		89,789
Total	$	348,479	$	175,234	$	523,713
Net written premiums:
Marine	$	88,156	$	84,063	$	172,219
Property Casualty		103,997		25,635		129,632
Professional Liability		40,588		11,883		52,471
Total	$	232,741	$	121,581	$	354,322
Net earned premiums:
Marine	$	81,648	$	70,287	$	151,935
Property Casualty		101,252		22,678		123,930
Professional Liability		38,736		10,939		49,675
Total	$	221,636	$	103,904	$	325,540

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Summary of Cumulative Amounts Related to Credit Loss Portion of the OTTI Losses on Debt Securities (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Beginning balance	$ 1,669	$ 2,577	$ 1,658	$ 2,523
Credit losses on securities not previously impaired at the beginning of the period		182		236
Additional credit losses on securities previously impaired at the beginning of the period	215		226
Reductions for securities sold during the period
Ending balance	$ 1,884	$ 2,759	$ 1,884	$ 2,759

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Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amounts charged to expense for stock-based compensation	$ 500,000	$ 700,000	$ 1,500,000	$ 2,700,000
Expense related to Employee Stock Purchase Plan	67,700	49,000	122,900	96,000
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amounts charged to expense for stock-based compensation	$ 60,000	$ 45,000	$ 120,000	$ 90,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period			4Y
Non Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period			5Y
Vesting Percentage of share in year three	33.33%		33.33%
Vesting Percentage of share in year four	33.33%		33.33%
Vesting Percentage of share in year five	33.33%		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			3Y
Percentage of shares vesting over the period			50.00%
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%		150.00%
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%		0.00%
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			5Y
Vesting Percentage of share in year three	33.33%		33.33%
Vesting Percentage of share in year four	33.33%		33.33%
Vesting Percentage of share in year five	33.33%		33.33%
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%		150.00%
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%		0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration term (in years)			10

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Preferred Stock	Common stock	Additional paid-in capital	Treasury stock, at cost	Retained earnings	Accumulated other comprehensive income (loss)
Beginning Balance at Dec. 31, 2009			$ 1,721	$ 304,505	$ (18,296)	$ 469,934	$ 43,655
Change in net unrealized gains on securities	25,196						15,522
Treasury stock acquired					(46,169)
Net income	36,015					36,015
Share-based compensation				4,044
Change in net non-credit other-than-temporary impairment losses							(1,302)
Issuance related to share-based compensation			3		4,677
Change in net cumulative translation adjustments	434						434
Ending Balance at Jun. 30, 2010	814,743		1,724	308,549	(59,788)	505,949	58,309
Beginning Balance at Dec. 31, 2010	829,354		1,728	312,588	(64,935)	539,512	40,461
Change in net unrealized gains on securities	17,266						16,696
Treasury stock acquired					(41,442)
Net income	1,611					1,611
Share-based compensation				10,586
Change in net non-credit other-than-temporary impairment losses							175
Issuance related to share-based compensation			16
Change in net cumulative translation adjustments	923						923
Ending Balance at Jun. 30, 2011	$ 817,919		$ 1,744	$ 323,174	$ (106,377)	$ 541,123	$ 58,255

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Reinsurance Ceded (Tables)

6 Months Ended

Jun. 30, 2011

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 loss adjustment expense and ceded unearned premium (constituting approximately 74.3% of the total recoverable), together with the reinsurance recoverable and collateral at June 30, 2011, and the reinsurers’ rating from the indicated rating agency:

		September 30,		September 30,		September 30,		September 30,	September 30,	September 30,
	Reinsurance Recoverables
Reinsurer	Unearned Premium		Unpaid/Paid Losses		Total		Collateral Held (1)		Rating & Rating Agency (2)
	($ in millions)
Swiss Reinsurance America Corporation	$	6.8	$	95.7	$	102.5	$	8.2	A	AMB
Munich Reinsurance America Inc.		14.1		74.9		89.0		4.3	A+	AMB
Everest Reinsurance Company		16.3		67.5		83.8		7.7	A+	AMB
Transatlantic Reinsurance Company		17.8		65.9		83.7		6.8	A	AMB
Scor Holding (Switzerland) AG		4.2		41.6		45.8		9.2	A	AMB
Partner Reinsurance Europe		7.5		35.5		43.0		18.2	AA-	S&P
National Indemnity Company		12.7		29.6		42.3		6.1	A++	AMB
Munchener Ruckversicherungs-Gesellschaft		0.9		35.1		36.0		8.6	A+	AMB
Lloyd’s Syndicate #2003		5.4		27.0		32.4		6.1	A	AMB
Berkley Insurance Company		2.0		29.8		31.8		—	A+	AMB
General Reinsurance Corporation		0.9		30.6		31.5		1.3	A++	AMB
White Mountains Reinsurance of America		0.2		29.6		29.8		0.7	A-	AMB
Platinum Underwriters Re		1.3		25.4		26.7		3.1	A	AMB
Ace Property and Casualty Insurance Company		3.2		20.8		24.0		0.5	A+	AMB
AXIS Re Europe		5.7		18.1		23.8		6.1	A	AMB
Allied World Reinsurance		6.9		15.6		22.5		2.6	A	AMB
Validus Reinsurance Ltd.		3.0		15.7		18.7		6.4	A-	AMB
Tower Insurance Company		12.6		5.6		18.2		4.4	A-	AMB
Lloyd’s Syndicate #457		3.9		11.1		15.0		4.2	A	AMB
Lloyd’s Syndicate #4000		2.6		11.4		14.0		2.1	A	AMB
Top 20 Total		128.0		686.5		814.5		106.6
All Other		49.0		232.4		281.4		91.1
Total	$	177.0	$	918.9	$	1,095.9	$	197.7

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

(2) A.M. Best Company (^“A.M. Best”, ^“AMB”) and Standard and Poor’s Rating Services (“S&P”⁾

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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	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Level 3 investments as of December 31	$ 1,837
Unrealized net gains included in other comprehensive income (loss)	(26)
Purchases, sales, paydowns and amortization	(4)
Transfer from Level 3	(1,807)
Transfer to Level 3

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Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011 UK Branch Insurance Companies	Jun. 30, 2010 UK Branch Insurance Companies	Jun. 30, 2011 UK Branch Insurance Companies	Jun. 30, 2010 UK Branch Insurance Companies	Jun. 30, 2011 Navigators Insurance Company	Jun. 30, 2011 Lloyd's Operations	Jun. 30, 2010 Lloyd's Operations	Jun. 30, 2011 Lloyd's Operations	Jun. 30, 2010 Lloyd's Operations	Jun. 30, 2011 Lloyd's Operations Syndicate 1221	Dec. 31, 2010 Lloyd's Operations Syndicate 1221	Jun. 30, 2011 Insurance Companies	Jun. 30, 2010 Insurance Companies	Jun. 30, 2011 Insurance Companies	Jun. 30, 2010 Insurance Companies
Segment Reporting Information [Line Items]
Percentage of Navigators Specialty Insurance Company reinsured by Navigators Insurance Company			74.30%						100.00%
Percentage control of stamp capacity														100.00%	100.00%
Maximum combined ratio indicating underwriting profit			100.00%
Minimum combined ratio indicating underwriting loss			100.00%
Net earned premiums	$ 173,777	$ 161,471	$ 326,255	$ 325,540	$ 25,500	$ 18,700	$ 42,900	$ 38,600		$ 58,790	$ 51,046	$ 112,448	$ 103,904			$ 114,987	$ 110,425	$ 213,807	$ 221,636

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Tax expense (benefit), change in net unrealized gains (losses) on investments	$ 8,390		$ 4,162		$ 8,573		$ 7,354
Tax (benefit) expense change in foreign currency translation (losses) gains	(4)		(554)		359		234
Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	18,385		15,281		17,266		25,196
Reclassification adjustment for net realized (gains) losses included in net income	(1,913)		7,163		(913)		11,136
Reclassification adjustment for other-than-temporary impairment losses recognized in net income	361		(104)		518		(160)
Change in net unrealized gains (losses) on investments, net of tax	$ 16,833	[1]	$ 8,222	[1]	$ 16,871	[2]	$ 14,220	[2]

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 18,385 $ 15,281 Reclassification adjustment for net realized (gains) losses included in net income (1,913 ) 7,163 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 361 (104 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,833 $ 8,222

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 17,266 $ 25,196 Reclassification adjustment for net realized (gains) losses included in net income (913 ) 11,136 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 518 (160 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,871 $ 14,220

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Senior Notes due May 1, 2016

6 Months Ended

Jun. 30, 2011

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 notes due May 1, 2016 (the “Senior Notes”) and received net proceeds of $123.5 million. The interest payment dates on the Senior Notes are 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, approximates 7.17%. The interest expense on the Senior Notes was $2.0 million for the three months ended June 30, 2011 and 2010, respectively, and $4.1 million for the six months ended June 30, 2011 and 2010, respectively. The fair value of the Senior Notes, based on quoted market prices, was $124.7 million and $117.6 million at June 30, 2011 and December 31, 2010, respectively.

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, 2011, the Company was in compliance with all such covenants.

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 $2.9 million pre-tax gain that was reflected in Other income. As a result of this transaction, approximately $115 million aggregate principal amount of the Senior Notes remains issued and outstanding as of June 30, 2011.

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Cash and Investments Including Other-Than-Temporarily Impaired ("OTTI") Securities Recognized within Other Comprehensive Income ("OCI") (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Gain (Loss) on Investments [Line Items]
Total investments and cash	$ 2,167,330	$ 2,154,328
Gross Unrealized Gains	83,099	69,884
Gross Unrealized (Losses)	(8,545)	(20,772)
Cost or Amortized Cost	2,092,776	2,105,216
OTTI Recognized in OCI	(1,384)	(1,646)
Fixed maturities
Gain (Loss) on Investments [Line Items]
Total investments and cash	1,847,221	1,882,245
Gross Unrealized Gains	56,140	47,409
Gross Unrealized (Losses)	(8,288)	(20,762)
Cost or Amortized Cost	1,799,369	1,855,598
OTTI Recognized in OCI	(1,384)	(1,646)
Fixed maturities | U.S. Government Treasury bonds, agency bonds and foreign government bonds
Gain (Loss) on Investments [Line Items]
Total investments and cash	291,492	324,145
Gross Unrealized Gains	5,492	5,229
Gross Unrealized (Losses)	(610)	(4,499)
Cost or Amortized Cost	286,610	323,415
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Total investments and cash	374,873	392,250
Gross Unrealized Gains	15,910	11,903
Gross Unrealized (Losses)	(962)	(3,805)
Cost or Amortized Cost	359,925	384,152
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	365,497	382,628
Gross Unrealized Gains	12,752	10,127
Gross Unrealized (Losses)	(864)	(2,434)
Cost or Amortized Cost	353,609	374,935
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	25,948	20,463
Gross Unrealized Gains	40	24
Gross Unrealized (Losses)	(2,266)	(2,393)
Cost or Amortized Cost	28,174	22,832
OTTI Recognized in OCI	(1,384)	(1,646)
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	52,559	46,093
Gross Unrealized Gains	539	247
Gross Unrealized (Losses)	(77)	(292)
Cost or Amortized Cost	52,097	46,138
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	218,429	190,015
Gross Unrealized Gains	6,480	4,804
Gross Unrealized (Losses)	(800)	(1,794)
Cost or Amortized Cost	212,749	187,005
Fixed maturities | Mortgage- and asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	662,433	639,199
Gross Unrealized Gains	19,811	15,202
Gross Unrealized (Losses)	(4,007)	(6,913)
Cost or Amortized Cost	646,629	630,910
OTTI Recognized in OCI	(1,384)	(1,646)
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Total investments and cash	518,423	526,651
Gross Unrealized Gains	14,927	15,075
Gross Unrealized (Losses)	(2,709)	(5,545)
Cost or Amortized Cost	506,205	517,121
Equity Securities
Gain (Loss) on Investments [Line Items]
Total investments and cash	94,737	87,258
Gross Unrealized Gains	26,959	22,475
Gross Unrealized (Losses)	(257)	(10)
Cost or Amortized Cost	68,035	64,793
Cash
Gain (Loss) on Investments [Line Items]
Total investments and cash	40,340	31,768
Cost or Amortized Cost	40,340	31,768
Short-term investments
Gain (Loss) on Investments [Line Items]
Total investments and cash	185,032	153,057
Cost or Amortized Cost	$ 185,032	$ 153,057

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Share Repurchases

6 Months Ended

Jun. 30, 2011

Share Repurchases

Note 12. Share Repurchases

In May 2011, the Parent Company’s Board of Directors authorized an additional $50 million under the existing share repurchase program of the Company’s common stock which increased the size of the program to $150 million. This repurchase program was initially authorized in November 2009. The share repurchase program as originally approved was scheduled to expire on December 31, 2010, however, prior to its expiration, the Parent Company’s Board of Directors approved an extension to December 31, 2011.

Purchases are permitted from time to time at prevailing prices in open market or privately negotiated transactions through December 31, 2011. The timing and amount of purchases under the program depend on a variety of factors, including the trading price of the stock, market conditions and corporate and regulatory considerations.

For the three months ended June 30, 2011, the Company repurchased 597,026 of the Parent Company’s common stock at an aggregate purchase price of $28.4 million and a weighted average price per share of $47.55 pursuant to the share repurchase program. For the six months ended June 30, 2011, the Company repurchased 853,120 of the Parent Company’s common stock at an aggregate purchase price of $41.4 million and a weighted average price per share of $48.58 pursuant to the share repurchase program. Since inception, the Company has repurchased 2,258,980 shares of the Parent Company’s common stock at an aggregate purchase price of $100.5 million and a weighted average price per share of $44.43. As of June 30, 2011, approximately $49.5 million was available for future repurchases under the program.

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CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Jun. 30, 2011		Dec. 31, 2010
Investments and cash:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2011, $1,799,369; 2010, $1,855,598)	$ 1,847,221		$ 1,882,245
Equity securities, available-for-sale, at fair value (cost: 2011, $68,035; 2010, $64,793)	94,737		87,258
Short-term investments, at cost which approximates fair value	185,032		153,057
Cash	40,340		31,768
Total investments and cash	2,167,330		2,154,328
Premiums receivable	273,327		188,368
Prepaid reinsurance premiums	176,960		156,869
Reinsurance recoverable on paid losses	65,856		56,658
Reinsurance recoverable on unpaid losses and loss adjustment expenses	852,992		843,296
Deferred policy acquisition costs	60,468		55,201
Accrued investment income	14,212		15,590
Goodwill and other intangible assets	7,037		6,925
Current income tax receivable, net	6,877		1,054
Deferred income tax, net	6,871		15,141
Other assets	23,979		38,029
Total assets	3,655,909	[1]	3,531,459
Liabilities:
Reserves for losses and loss adjustment expenses	2,033,556		1,985,838
Unearned premiums	534,474		463,515
Reinsurance balances payable	125,482		105,904
Senior notes	115,547		114,138
Accounts payable and other liabilities	28,931		32,710
Total liabilities	2,837,990		2,702,105
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 17,400,857 shares for 2011 and 17,274,440 shares for 2010	1,744		1,728
Additional paid-in capital	323,174		312,588
Treasury stock, at cost (2,385,393 shares for 2011 and 1,532,273 shares for 2010)	(106,377)		(64,935)
Retained earnings	541,123		539,512
Accumulated other comprehensive income	58,255		40,461
Total stockholders' equity	817,919		829,354
Total liabilities and stockholders' equity	$ 3,655,909		$ 3,531,459

[1] Includes inter-segment transactions causing the row not to cross foot.

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Summary of 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 (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011 Investment	Dec. 31, 2010 Investment
Fixed maturities
Gain (Loss) on Investments [Line Items]
Number of Securities	239,000	313,000
Fair Value	$ 424,288	$ 757,305
Gross Unrealized Loss	8,288	20,762
Fixed maturities | U.S. Government Treasury bonds, agency bonds and foreign government bonds
Gain (Loss) on Investments [Line Items]
Number of Securities	20,000	36,000
Fair Value	50,337	163,253
Gross Unrealized Loss	610	4,499
Fixed maturities | U.S. Government Treasury bonds, agency bonds and foreign government bonds | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	4,000	36,000
Fair Value	7,714	163,253
Gross Unrealized Loss	16	4,499
Fixed maturities | U.S. Government Treasury bonds, agency bonds and foreign government bonds | 7-12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	16,000
Fair Value	42,623
Gross Unrealized Loss	594
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Number of Securities	27,000	62,000
Fair Value	33,654	114,612
Gross Unrealized Loss	962	3,805
Fixed maturities | States, municipalities and political subdivisions | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	4,000	57,000
Fair Value	11,970	112,291
Gross Unrealized Loss	42	3,749
Fixed maturities | States, municipalities and political subdivisions | 7-12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	15,000	1,000
Fair Value	19,445	1,004
Gross Unrealized Loss	870	20
Fixed maturities | States, municipalities and political subdivisions | > 12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	8,000	4,000
Fair Value	2,239	1,317
Gross Unrealized Loss	50	36
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Number of Securities	21,000	36,000
Fair Value	73,679	139,226
Gross Unrealized Loss	864	2,434
Fixed maturities | Agency mortgage-backed securities | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	5,000	36,000
Fair Value	31,727	139,226
Gross Unrealized Loss	89	2,434
Fixed maturities | Agency mortgage-backed securities | 7-12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	16,000
Fair Value	41,952
Gross Unrealized Loss	775
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Number of Securities	57,000	55,000
Fair Value	23,948	19,154
Gross Unrealized Loss	2,266	2,393
Fixed maturities | Residential Mortgage Backed Securities | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	9,000	3,000
Fair Value	10,986	3,215
Gross Unrealized Loss	119	20
Fixed maturities | Residential Mortgage Backed Securities | 7-12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	1,000
Fair Value	183
Gross Unrealized Loss	15
Fixed maturities | Residential Mortgage Backed Securities | > 12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	47,000	52,000
Fair Value	12,779	15,939
Gross Unrealized Loss	2,132	2,373
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Number of Securities	9,000	8,000
Fair Value	18,227	28,177
Gross Unrealized Loss	77	292
Fixed maturities | Asset-backed securities | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	8,000	7,000
Fair Value	18,225	28,175
Gross Unrealized Loss	77	292
Fixed maturities | Asset-backed securities | > 12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	1,000	1,000
Fair Value	2	2
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Number of Securities	20,000	18,000
Fair Value	62,682	78,703
Gross Unrealized Loss	800	1,794
Fixed maturities | Commercial mortgage-backed securities | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	14,000	16,000
Fair Value	50,628	78,212
Gross Unrealized Loss	541	1,755
Fixed maturities | Commercial mortgage-backed securities | 7-12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	5,000
Fair Value	11,832
Gross Unrealized Loss	240
Fixed maturities | Commercial mortgage-backed securities | > 12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	1,000	2,000
Fair Value	222	491
Gross Unrealized Loss	19	39
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Number of Securities	85,000	98,000
Fair Value	161,761	214,180
Gross Unrealized Loss	2,709	5,545
Fixed maturities | Corporate bonds | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	36,000	98,000
Fair Value	60,661	214,180
Gross Unrealized Loss	667	5,545
Fixed maturities | Corporate bonds | 7-12 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	49,000
Fair Value	101,100
Gross Unrealized Loss	2,042
Equity Securities
Gain (Loss) on Investments [Line Items]
Number of Securities	7,000	1,000
Fair Value	4,743	322
Gross Unrealized Loss	257	10
Equity Securities | 0-6 Months
Gain (Loss) on Investments [Line Items]
Number of Securities	7,000	1,000
Fair Value	4,743	322
Gross Unrealized Loss	$ 257	$ 10

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Credit Facility - Additional Information (Detail) (USD $) In Millions	1 Months Ended	6 Months Ended
	Mar. 31, 2011	Jun. 30, 2011
Line of Credit Facility [Line Items]
Line of credit facility	$ 140
Line of credit facility, expiration date	2011-03-31
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.
Line of credit facility, covenant compliance		The Company was in compliance with all covenants under the credit facility at June 30, 2011.
Lloyd's Operations | Syndicate 1221
Line of Credit Facility [Line Items]
Line of credit facility, expiration date		2011-12-31
Aggregate face amount of letters of credit outstanding		132.3
Fifth Amended And Restated Credit Agreement
Line of Credit Facility [Line Items]
Line of credit facility	$ 165
Line of credit facility, expiration date	2011-12-31

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Share Repurchases - Additional Information (Detail) (USD $)	1 Months Ended	20 Months Ended	3 Months Ended	6 Months Ended
	May 31, 2011	Jun. 30, 2011	Jun. 30, 2011 Repurchase Of Equity	Jun. 30, 2011 Repurchase Of Equity
Equity, Class of Treasury Stock [Line Items]
Share repurchase program, authorized amount	$ 50,000,000	$ 150,000,000
Number of shares repurchased		2,258,980	597,026	853,120
Aggregate purchase price		100,500,000	28,400,000	41,400,000
Weighted average price Per Share		$ 44.43	$ 47.55	$ 48.58
Amount available for future repurchases				$ 49,500,000

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Investments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Schedule of Investments [Line Items]
Increase (decrease) in OTTI losses within OCI	$ 0.1	$ (0.9)	$ (0.3)	$ (1.9)
Equity Securities
Schedule of Investments [Line Items]
Percentage of fair value over cost	80.00%		80.00%