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 March 31, 2016

or

o 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.)
400 Atlantic Street, Stamford, Connecticut	06901
(Address of principal executive offices)	(Zip Code)

(203) 905-6090

(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  o

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  o

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	x	Accelerated filer	o
Non-accelerated filer	o	Smaller reporting company	o

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

The number of common shares outstanding as of April 29, 2016 was 14,533,395.

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

INDEX

Contents

PART I. FINANCIAL INFORMATION	3
Item 1.      Financial Statements	3
Consolidated Balance Sheets (Unaudited) – March 31, 2016 and December 31, 2015	3
Consolidated Statements of Income (Unaudited) – Three Months Ended March 31, 2016 and 2015	4
Consolidated Statements of Comprehensive Income (Unaudited) – Three Months Ended March 31, 2016 and 2015	5
Consolidated Statement of Stockholders’ Equity (Unaudited) – Three Months Ended March 31,2016	6
Consolidated Statements of Cash Flows (Unaudited) – Three Months Ended March 31, 2016 and 2015	7
Notes to Interim Consolidated Financial Statements (Unaudited)	8
Item 2.      Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.      Quantitative and Qualitative Disclosures about Market Risk	35
Item 4.      Controls and Procedures	35
PART II - OTHER INFORMATION	36
Item 1.      Legal Proceedings	36
Item 1A.   Risk Factors	36
Item 2.      Unregistered Sales of Equity Securities and Use of Proceeds	36
Item 3.      Defaults Upon Senior Securities	36
Item 4.      Mine Safety Disclosures	36
Item 5.      Other Information	36
Item 6.      Exhibits	37
Index to Exhibits	39

2

PART I. FINANCIAL INFORMATION

Item 1.  Financial Statements

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Unaudited)

	March 31,			December 31,
amounts in thousands, except share and per share amounts	2016			2015
ASSETS
Investments:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2016: $2,432,837;    2015: $2,400,245)	$	2,477,720		$	2,414,210
Equity securities, available-for-sale, at fair value (cost: 2016: $286,811; 2015: $281,943)		314,815			305,271
Short-term investments, at fair value (amortized cost: 2016: $211,782; 2015: $217,743)		211,782			217,745
Total investments	$	3,004,317		$	2,937,226
Cash		72,618			69,901
Premiums receivable		348,916			276,616
Prepaid reinsurance premiums		220,696			232,588
Reinsurance recoverable on paid losses		55,752			49,506
Reinsurance recoverable on unpaid losses and loss adjustment expenses		793,632			809,518
Deferred policy acquisition costs		105,359			91,983
Accrued investment income		16,451			16,001
Goodwill and other intangible assets		6,746			6,807
Current income tax receivable, net		13,032			22,323
Deferred income tax, net		—			3,900
Other assets		59,114			67,643
Total assets	$	4,696,633		$	4,584,012
LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities:
Reserves for losses and loss adjustment expenses	$	2,211,848		$	2,202,644
Unearned premiums		864,247			820,676
Reinsurance balances payable		123,165			107,411
Senior notes		263,616			263,580
Deferred income tax, net		8,280			—
Accounts payable and other liabilities		81,598			93,553
Total liabilities	$	3,552,754		$	3,487,864
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 18,042,474 shares    for 2016 and 17,942,269 shares for 2015		1,803			1,793
Additional paid-in capital		359,829			357,829
Treasury stock, at cost (3,511,380 shares for 2016 and 2015)		(155,801	)		(155,801	)
Retained earnings		891,655			868,723
Accumulated other comprehensive income		46,393			23,604
Total stockholders' equity	$	1,143,879		$	1,096,148
Total liabilities and stockholders' equity	$	4,696,633		$	4,584,012

See accompanying Notes to Interim Consolidated Financial Statements.

3

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

	Three Months Ended March 31,
amounts in thousands, except share and per share amounts	2016			2015
Gross written premiums	$	413,877		$	396,460
Revenues:
Net written premiums		319,820			288,958
Change in unearned premiums		(55,462	)		(52,826	)
Net earned premiums		264,358			236,132
Net investment income		19,594			16,253
Total other-than-temporary impairment losses		(109	)		23
Portion of loss recognized in other comprehensive income (before tax)		109			(23	)
Net other-than-temporary impairment losses recognized in earnings		—			—
Net realized gains (losses)		1,597			5,596
Other income (expenses)		2,549			2,242
Total revenues	$	288,098		$	260,223
Expenses:
Net losses and loss adjustment expenses	$	152,956		$	130,198
Commission expenses		37,554			32,905
Other operating expenses		60,809			54,909
Interest expense		3,858			3,855
Total expenses		255,177			221,867
Income before income taxes		32,921			38,356
Income tax expense (benefit)		9,989			12,427
Net income	$	22,932		$	25,929
Net income per common share:
Basic	$	1.58		$	1.81
Diluted	$	1.54		$	1.77
Average common shares outstanding:
Basic		14,492,214			14,327,606
Diluted		14,891,646			14,637,837

See accompanying Notes to Interim Consolidated Financial Statements.

4

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

	Three Months Ended March 31,
amounts in thousands	2016			2015
Net income	$	22,932		$	25,929
Other comprehensive income:
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net    of deferred tax of $(11,737) and $(1,723) in 2016 and 2015, respectively		21,798			3,201
Reclassification adjustment for net realized (gains) losses included    in net income net of deferred tax of $(758) and $698 in 2016 and    2015,  respectively		1,408			(1,297	)
Change in net unrealized gains (losses) on investments	$	23,206		$	1,904
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period,    net of deferred tax of $38 and $(8) in 2016 and 2015,  respectively		(71	)		15
Reclassification adjustment for non credit other-than-temporary impairment    losses recognized in net income net of deferred tax of $0 in both 2016    and 2015		—			—
Change in other-than-temporary impairments	$	(71	)	$	15
Change in foreign currency translation gains (losses), net of deferred    tax of $183 and $429 in 2016 and 2015, respectively		(346	)		(796	)
Other comprehensive income (loss)	$	22,789		$	1,123
Comprehensive income (loss)	$	45,721		$	27,052

See accompanying Notes to Interim Consolidated Financial Statements.

5

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited)

					Additional										Accumulated Other			Total
	Common Stock				Paid-in			Treasury Stock					Retained		Comprehensive			Stockholders'
amounts in  thousands, except share amounts	Shares		Amount		Capital			Shares		Amount			Earnings		Income (Loss)			Equity
Balance, December 31, 2015		17,942,269	$	1,793	$	357,829			3,511,380	$	(155,801	)	$	868,723	$	23,604		$	1,096,148
Net income														22,932		—			22,932
Changes in  comprehensive income:
Change in net unrealized gain (loss) on investments		—		—		—			—		—			—		23,206			23,206
Change in net non-credit other-than-temporary  impairment losses		—		—		—			—		—			—		(71	)		(71	)
Change in foreign currency  translation gain (loss)		—		—		—			—		—			—		(346	)		(346	)
Total  comprehensive  income (loss)		—		—		—			—		—			—		22,789			22,789
Shares issued under stock plan		100,205		10		(2,926	)		—		—			—		—			(2,916	)
Share-based compensation		—		—		4,926			—		—			—		—			4,926
Balance,  March 31, 2016		18,042,474	$	1,803	$	359,829			3,511,380	$	(155,801	)	$	891,655	$	46,393		$	1,143,879

See accompanying Notes to Interim Consolidated Financial Statements.

6

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Three Months Ended March 31,
amounts in thousands	2016			2015
Operating activities:
Net income	$	22,932		$	25,929
Adjustments to reconcile net income to net cash provided by (used in) operating    activities:
Depreciation & amortization		1,459			1,051
Deferred income taxes		191			865
Net realized (gains) losses		(1,597	)		(5,596	)
Net other-than-temporary impairments recognized in earnings		—			—
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses		9,640			18,056
Reserves for losses and loss adjustment expenses		9,204			(17,930	)
Prepaid reinsurance premiums		11,891			(6,374	)
Unearned premiums		43,571			60,393
Premiums receivable		(72,300	)		(53,878	)
Deferred policy acquisition costs		(13,376	)		(6,769	)
Accrued investment income		(450	)		106
Reinsurance balances payable		15,753			1,445
Current income tax payable, net		9,291			9,388
Accounts payable		(10,830	)		(31,229	)
Other		13,169			(372	)
Net cash provided by (used in) operating activities	$	38,548		$	(4,915	)
Investing activities:
Fixed maturities
Redemptions and maturities	$	44,996		$	37,241
Sales		98,680			119,505
Purchases		(177,719	)		(130,196	)
Equity securities
Sales		10,724			38,343
Purchases		(15,601	)		(12,320	)
Change in payable for securities		(1,472	)		15,565
Net change in short-term investments		6,146			(63,168	)
Purchase of property and equipment		(2,452	)		(790	)
Net cash provided by (used in) investing activities	$	(36,698	)	$	4,180
Financing activities:
Proceeds of stock issued from employee stock purchase plan	$	867		$	—
Proceeds of stock issued from exercise of stock options		—			—
Net cash provided by (used in) financing activities	$	867		$	—
Change in cash	$	2,717		$	(735	)
Cash at beginning of year		69,901			90,751
Cash at end of period	$	72,618		$	90,016
Supplemental cash information:
Income taxes paid, net	$	40		$	1,793
Interest paid	$	—		$	—
Issuance of stock to directors	$	633		$	563

See accompanying Notes to Interim Consolidated Financial Statements.

7

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

Notes to Interim Consolidated Financial Statements (Unaudited)

NOTE 1.  ORGANIZATION & SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Unless the context requires otherwise, the terms “we,” “us,”  “our,” or “our Company” are used to mean The Navigators Group, Inc., a Delaware holding company established in 1982, and its subsidiaries.  The terms “Parent” or “Parent Company” are used to mean The Navigators Group, Inc. without its subsidiaries.

Organization

We are an international insurance company with a long-standing area of specialization in Marine insurance.  We also offer Property and Casualty (“P&C”) insurance business, primarily general liability coverage and umbrella & excess liability coverage to commercial enterprises through our Primary and Excess Casualty divisions.  We have also developed niches in Professional Liability insurance, through our Directors & Officers (“D&O”) and Errors & Omissions (“E&O”) divisions.  Beginning in 2010, we added reinsurance products through our Global Reinsurance (“GlobalRe”) business.

We operate through various wholly-owned subsidiaries, including Navigators Insurance Company (“NIC”), inclusive of its United Kingdom Branch (“U.K. Branch”), and Navigators Specialty Insurance Company (“NSIC”), both of which are U.S. insurance companies, and Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s of London (“Lloyd’s”) underwriting agency that manages Lloyd’s Syndicate 1221 (the “Syndicate”) in the U.K. and is the primary underwriting company of Navigators Holdings (U.K.) Ltd. (“NHUK”), the holding company for our non U.S. domiciled entities. Our Company controls 100% of the Syndicate’s stamp capacity.

Basis of Presentation

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 significant intercompany transactions and balances have been eliminated in consolidation.  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 Interim Consolidated Financial Statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015.  

Income Taxes

The income tax provision has been computed based on our estimated annual effective tax rate.  Our effective tax rate for the quarter differs from the federal tax rate of 35% principally because of tax-exempt investment income and dividends received deduction.

Current and Pending Accounting Pronouncements

As of January 1, 2016, we adopted the following accounting pronouncements, which did not have a material effect, singly or in the aggregate, on our consolidated financial condition, results of operations or cash flows:

· Accounting Standards Update 2015-03 – Interest – Imputation of Interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs, which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to simplify presentation of debt issuance costs.

· Accounting Standards Update 2015-05 – Intangibles – Goodwill and Other – Internal Use Software (Subtopic 350-40) Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to provide guidance to customers about whether a cloud computing arrangement includes a software license.

· Accounting Standards Update 2015-07 – Fair Value Measurement – (Topic 820) Disclosures for Investments in Certain Entities that Calculate Net Asset Value per Share (or its equivalent) (a consensus of the Emerging Issues Task Force), which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to ensure that all investments categorized in the fair value hierarchy are classified using a consistent approach.

8

In 2016, the Financial Accounting Standards Board issued the following new pronouncements that may have an impact on our Company and we are assessing the future impact of these updates to our Consolidated Financial Statements:

· Accounting Standards Update 2016-01 – Financial Instruments (Subtopic 825-10) – Recognition and Measurement of Financial Assets and Financial Liabilities, which will be effective for fiscal years beginning after December 15, 2017.  The new pronouncement was issued to make targeted improvements to the presentation of financial instruments.

· Accounting Standards Update 2016-02 – Leases (Topic 842) - Amends the recognition of a right-to-use asset and lease liability on the statement of financial position of those leases previously classified as operating leases under the previous guidance, which will be effective for fiscal years beginning after December 15, 2015.  The new pronouncement was issued to improve transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements.

· Accounting Standards Update 2016-09 – Compensation – Stock Compensation – (Topic 718) Improvements to Employee Share-Based Accounting, which will be effective for fiscal years beginning after December 15, 2016.  The new pronouncement was issued to simplify employee share-based accounting.

There were no additional 2016 accounting pronouncements that are expected to have an impact on the Consolidated Financial Statements upon adoption.

NOTE 2.  SEGMENT INFORMATION

We report our results of operations consistent with the manner in which our Chief Operating Decision Maker reviews the business to assess performance through our reportable segments: U.S. Insurance, International Insurance (“Int’l Insurance”), Global Reinsurance (“GlobalRe”) and Corporate. 

We classify our business into three underwriting segments: U.S. Insurance, Int’l Insurance and GlobalRe.  Both the U.S. Insurance and Int’l Insurance reporting segments are each comprised of three operating segments: Marine, P&C and Professional Liability.

We evaluate the performance of each of the underwriting segments based on underwriting results.  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 loss adjustment expenses (“LAE”), Commission expenses, Other operating expenses and Other underwriting income (expense).  The Combined ratio is derived by dividing the sum of Net losses and LAE, Commission expenses, Other operating expenses and Other underwriting income (expense) by Net earned premiums.  A Combined ratio of less than 100% indicates an underwriting profit and greater than 100% indicates an underwriting loss.  Our underwriting performance is evaluated separately from the rest of our operations.  The performance of our investment portfolios, our liquidity and capital resource needs, our foreign currency exposure and our tax planning strategies are evaluated on a consolidated basis within our Corporate segment.

The accounting policies used to prepare the segment reporting data for our reportable segments are the same as those described in Note 1 and Note 2 of our Annual Report on Form 10-K for the year ended December 31, 2015.  

9

Financial data by segment for the three months ended March 31, 2016 and 2015 was as follows:

	Three Months Ended March 31, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	148,340		$	78,008		$	38,010		$	—		$	264,358
Net losses and LAE		(91,512	)		(40,410	)		(21,034	)		—			(152,956	)
Commission expenses		(14,855	)		(15,355	)		(7,745	)		401			(37,554	)
Other operating expenses		(33,761	)		(21,771	)		(5,277	)		—			(60,809	)
Other underwriting income (expense)		361			—			49			(401	)		9
Underwriting profit (loss)	$	8,573		$	472		$	4,003		$	—		$	13,048
Net investment income											19,594			19,594
Net realized gains (losses)											1,597			1,597
Interest expense											(3,858	)		(3,858	)
Other income (loss)											2,540			2,540
Income before income taxes	$	8,573		$	472		$	4,003		$	19,873		$	32,921
Income tax (expense) benefit											(9,989	)		(9,989	)
Net income (loss)													$	22,932
Losses and LAE ratio		61.7	%		51.8	%		55.3	%					57.9	%
Commission expense ratio		10.0	%		19.7	%		20.4	%					14.2	%
Other operating expense ratio (2)		22.5	%		27.9	%		13.8	%					23.0	%
Combined ratio		94.2	%		99.4	%		89.5	%					95.1	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

	Three Months Ended March 31, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	131,091		$	65,525		$	39,516		$	—		$	236,132
Net losses and LAE		(77,799	)		(29,691	)		(22,708	)		—			(130,198	)
Commission expenses		(14,345	)		(11,413	)		(7,298	)		151			(32,905	)
Other operating expenses		(33,688	)		(17,009	)		(4,212	)		—			(54,909	)
Other underwriting income (expense)		196			—			10			(151	)		55
Underwriting profit (loss)	$	5,455		$	7,412		$	5,308		$	—		$	18,175
Net investment income											16,253			16,253
Net realized gains (losses)											5,596			5,596
Interest expense											(3,855	)		(3,855	)
Other income (loss)											2,187			2,187
Income before income taxes	$	5,455		$	7,412		$	5,308		$	20,181		$	38,356
Income tax (expense) benefit											(12,427	)		(12,427	)
Net income (loss)													$	25,929
Losses and LAE ratio		59.3	%		45.3	%		57.5	%					55.1	%
Commission expense ratio		10.9	%		17.4	%		18.5	%					13.9	%
Other operating expense ratio (2)		25.6	%		26.0	%		10.6	%					23.3	%
Combined ratio		95.8	%		88.7	%		86.6	%					92.3	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

Revenue by operating segment for the three months ended March 31, 2016 and 2015 was as follows:

10

	Three Months Ended March 31, 2016									Three Months Ended March 31, 2015									% Change
amounts in thousands	Gross written premiums		Ceded written premiums			Netwritten premiums		Net earned premiums		Gross written premiums		Ceded written premiums			Net written premiums		Net earned premiums		Gross written premiums			Ceded written premiums			Net written premiums			Net earned premiums
U.S. Insurance
Marine	$	43,163	$	(17,647	)	$	25,516	$	23,250	$	40,835	$	(16,286	)	$	24,549	$	23,924		5.7	%		8.4	%		3.9	%		(2.8	%)
P&C		141,278		(30,507	)		110,771		109,159		134,146		(39,558	)		94,588		90,735		5.3	%		(22.9	%)		17.1	%		20.3	%
Professional Liability		26,206		(6,343	)		19,863		15,931		24,346		(12,886	)		11,460		16,432		7.6	%		(50.8	%)		73.3	%		(3.0	%)
Total	$	210,647	$	(54,497	)	$	156,150	$	148,340	$	199,327	$	(68,730	)	$	130,597	$	131,091		5.7	%		(20.7	%)		19.6	%		13.2	%
Int'l Insurance
Marine	$	71,948	$	(11,089	)	$	60,859	$	38,856	$	67,410	$	(10,822	)	$	56,588	$	37,792		6.7	%		2.5	%		7.5	%		2.8	%
P&C		44,046		(17,229	)		26,817		21,209		32,950		(16,129	)		16,821		16,034		33.7	%		6.8	%		59.4	%		32.3	%
Professional Liability		28,149		(6,653	)		21,496		17,943		22,067		(7,305	)		14,762		11,699		27.6	%		(8.9	%)		45.6	%		53.4	%
Total	$	144,143	$	(34,971	)	$	109,172	$	78,008	$	122,427	$	(34,256	)	$	88,171	$	65,525		17.7	%		2.1	%		23.8	%		19.1	%
GlobalRe	$	59,087	$	(4,589	)	$	54,498	$	38,010	$	74,706	$	(4,516	)	$	70,190	$	39,516		(20.9	%)		1.6	%		(22.4	%)		(3.8	%)
Total	$	413,877	$	(94,057	)	$	319,820	$	264,358	$	396,460	$	(107,502	)	$	288,958	$	236,132		4.4	%		(12.5	%)		10.7	%		12.0	%

NOTE 3.  INVESTMENTS

The following tables set forth our Company’s investments as of March 31, 2016 and December 31, 2015 and include Other-than-temporary-impairment (“OTTI”) securities recognized within Accumulated other comprehensive income (“AOCI”):

	March 31, 2016
			Gross		Gross			Cost or
	Fair		Unrealized		Unrealized			Amortized
amounts in thousands	Value		Gains		(Losses)			Cost
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign    government bonds	$	322,009	$	4,934	$	(4,478	)	$	321,553
States, municipalities and political subdivisions		550,855		26,085		(497	)		525,267
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		380,418		8,831		(323	)		371,910
Residential mortgage obligations		29,451		569		(131	)		29,013
Asset-backed securities		235,714		421		(2,040	)		237,333
Commercial mortgage-backed securities		188,169		4,903		(1,718	)		184,984
Subtotal	$	833,752	$	14,724	$	(4,212	)	$	823,240
Corporate bonds		771,104		15,457		(7,130	)		762,777
Total fixed maturities	$	2,477,720	$	61,200	$	(16,317	)	$	2,432,837
Equity securities		314,815		29,650		(1,646	)		286,811
Short-term investments		211,782		—		—			211,782
Total investments	$	3,004,317	$	90,850	$	(17,963	)	$	2,931,430

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	December 31, 2015
			Gross		Gross			Cost or
	Fair		Unrealized		Unrealized			Amortized
amounts in thousands	Value		Gains		(Losses)			Cost
Fixed maturities:
U.S. Treasury bonds, agency bonds and  foreign    government bonds	$	252,882	$	2,273	$	(9,214	)	$	259,823
States, municipalities and political subdivisions		576,859		21,233		(781	)		556,407
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		379,269		5,573		(2,082	)		375,778
Residential mortgage obligations		30,465		694		(82	)		29,853
Asset-backed securities		225,012		85		(1,624	)		226,551
Commercial mortgage-backed securities		189,713		3,119		(1,864	)		188,458
Subtotal	$	824,459	$	9,471	$	(5,652	)	$	820,640
Corporate bonds		760,010		7,373		(10,738	)		763,375
Total fixed maturities	$	2,414,210	$	40,350	$	(26,385	)	$	2,400,245
Equity securities		305,271		26,341		(3,013	)		281,943
Short-term investments		217,745		2		—			217,743
Total investments	$	2,937,226	$	66,693	$	(29,398	)	$	2,899,931

As of March 31, 2016 and December 31, 2015, our Company did not have a concentration of greater than 5% of invested assets in a single non-U.S. government-backed issuer.

As of March 31, 2016 and December 31, 2015, Fixed maturities for which non-credit OTTI was previously recognized and included in AOCI are now in an unrealized gains position of $0.4 million and $0.5 million, respectively.

The fair value of our 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. Our Company does not have the intent to sell nor is it more likely than not that it will have to sell Fixed maturities in unrealized loss positions that are not other-than-temporarily impaired before recovery. For structured securities, default probability and severity assumptions differ based on property type, vintage and the stress of the collateral. Our Company does not intend to sell, and it is more likely than not that our Company will not be required to sell, these securities before the recovery of the amortized cost basis. For Equity securities, our Company also considers our 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. Our Company 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 our Company considers when evaluating investments for impairment losses could result in a significant change in impairment losses reported in the Consolidated Financial Statements.

The contractual maturity dates for Fixed maturities categorized by the number of years until maturity as of March 31, 2016 are shown in the following table:

	March 31, 2016
	Fair		Amortized
amounts in thousands	Value		Cost
Due in one year or less	$	128,718	$	130,610
Due after one year through five years		805,858		795,317
Due after five years through ten years		301,025		292,205
Due after ten years		408,367		391,465
Mortgage-backed and asset-backed securities		833,752		823,240
Total	$	2,477,720	$	2,432,837

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. Prepayment assumptions associated with the mortgage-backed and asset-backed securities are reviewed on a periodic basis. When changes in prepayment assumptions are deemed necessary as the result of actual prepayments differing from anticipated prepayments, securities are revalued based upon the new prepayment assumptions utilizing the retrospective accounting method. Due to the periodic repayment of principal, the mortgage-backed and asset-backed securities are estimated to have an effective maturity of approximately 4.1 years.

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The following tables summarize all securities in a gross unrealized loss position as of March 31, 2016 and December 31, 2015, showing the aggregate fair value and gross unrealized loss by the length of time those securities have continuously been in a gross unrealized loss position:

	March 31, 2016
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
amounts in thousands	Value		(Losses)			Value		(Losses)			Value		(Losses)
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign    government bonds	$	29,155	$	(771	)	$	19,451	$	(3,707	)	$	48,606	$	(4,478	)
States, municipalities and political subdivisions		18,911		(266	)		6,387		(231	)		25,298		(497	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		4,082		(4	)		23,634		(319	)		27,716		(323	)
Residential mortgage obligations		4,562		(32	)		1,793		(99	)		6,355		(131	)
Asset-backed securities		91,678		(790	)		70,768		(1,250	)		162,446		(2,040	)
Commercial mortgage-backed securities		49,889		(1,690	)		3,362		(28	)		53,251		(1,718	)
Subtotal	$	150,211	$	(2,516	)	$	99,557	$	(1,696	)	$	249,768	$	(4,212	)
Corporate bonds		156,107		(6,590	)		21,949		(540	)		178,056		(7,130	)
Total fixed maturities	$	354,384	$	(10,143	)	$	147,344	$	(6,174	)	$	501,728	$	(16,317	)
Equity securities		37,422		(1,646	)		—		—			37,422		(1,646	)
Total fixed maturities and equity securities	$	391,806	$	(11,789	)	$	147,344	$	(6,174	)	$	539,150	$	(17,963	)

	December 31, 2015
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
amounts in thousands	Value		(Losses)			Value		(Losses)			Value		(Losses)
Fixed maturities:
U.S. Treasury bonds, agency bonds and    foreign government bonds	$	142,233	$	(3,032	)	$	22,230	$	(6,182	)	$	164,463	$	(9,214	)
States, municipalities and political subdivisions		50,577		(549	)		4,808		(232	)		55,385		(781	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		164,817		(1,315	)		29,862		(767	)		194,679		(2,082	)
Residential mortgage obligations		3,910		(5	)		1,684		(77	)		5,594		(82	)
Asset-backed securities		112,479		(663	)		81,477		(961	)		193,956		(1,624	)
Commercial mortgage-backed securities		83,024		(1,826	)		3,065		(38	)		86,089		(1,864	)
Subtotal	$	364,230	$	(3,809	)	$	116,088	$	(1,843	)	$	480,318	$	(5,652	)
Corporate bonds		395,399		(10,114	)		13,849		(624	)		409,248		(10,738	)
Total fixed maturities	$	952,439	$	(17,504	)	$	156,975	$	(8,881	)	$	1,109,414	$	(26,385	)
Equity securities		58,531		(3,013	)		—		—			58,531		(3,013	)
Total fixed maturities and equity securities	$	1,010,970	$	(20,517	)	$	156,975	$	(8,881	)	$	1,167,945	$	(29,398	)

As of March 31, 2016, there were 204 Fixed maturities and 36 Equity securities in an unrealized loss position. As of December 31, 2015, there were 368 Fixed maturities and 57 Equity securities in an unrealized loss position. As of March 31, 2016 and December 31, 2015, the gross unrealized loss for the greater than 12 months category consists primarily of agency and foreign government bonds principally due to an unfavorable foreign exchange movement. The gross unrealized loss for the less than 12 months category for periods ending March 31, 2016 and December 31, 2015 consists primarily of corporate bonds in the energy sector which have been impacted by the recent decline in oil prices.    

As of March 31, 2016 and December 31, 2015, the largest unrealized loss by a non-government backed issuer in the investment portfolio was $2.3 million and $2.6 million, respectively.

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Our Company analyzes impaired securities quarterly to determine if any are other-than-temporarily impaired. The above securities with unrealized losses have been determined to be temporarily impaired based on our evaluation.      

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

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

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

For Equity securities, in general, our Company reviews 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, our Company will review significant declines in fair value regardless of the time period involved.  Factors considered in evaluating potential impairment include, but are not limited to, the current fair value as compared to cost of the security, the length of time the investment has been below cost and by how much the investment is below cost.  If an Equity security is deemed to be other-than-temporarily impaired, the cost is written down to fair value with the loss recognized in earnings.

Our Company’s ability to hold securities is supported by sufficient cash flow from our operations and from maturities within our investment portfolio in order to meet our claims payments and other disbursement obligations arising from our 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.

Our Company did not have any credit related OTTI lossesduring the three months ended March 31, 2016 and 2015.

As of March 31, 2016 and 2015, the cumulative amounts related to our Company’s credit loss portion of the OTTI losses on Fixed maturities were $2.4 million. Our Company does not intend to sell, and it is more likely than not that it will not be required to sell, the securities prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in AOCI.

Our Company’s Net investment income was derived from the following sources:

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities	$	16,737		$	15,047
Equity securities		3,447			1,968
Short-term investments		210			183
Total investment income	$	20,394		$	17,198
Investment expenses		(800	)		(945	)
Net investment income	$	19,594		$	16,253

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

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities:
Gains	$	2,548		$	1,174
Losses		(1,127	)		(572	)
Fixed maturities, net	$	1,421		$	602
Short-term:
Gains	$	268		$	8
Losses		(83	)		(162	)
Short-term, net	$	185		$	(154	)
Equity securities:
Gains	$	609		$	6,325
Losses		(618	)		(1,177	)
Equity securities, net	$	(9	)	$	5,148
Net realized gains (losses)	$	1,597		$	5,596

NOTE 4.  FAIR VALUE MEASUREMENT

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

Level 1 – Quoted prices for identical instruments in active markets.  Examples are listed equity and fixed income securities traded on an exchange.  U.S. Treasury securities are reported as Level 1 and are valued based on unadjusted quoted prices for identical assets in active markets that our Company can access.

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

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 following tables present, for each of the fair value hierarchy levels as defined by the accounting guidance for fair value measurements and described below, our Company’s Fixed maturities and Equity securities by asset class that are measured at fair value on a recurring basis, as well as the fair value of the 5.75% Senior notes due October 15, 2023 (the “Senior notes”) carried at amortized cost as of March 31, 2016 and December 31, 2015:

	March 31, 2016
amounts in thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S.  Treasury bonds, agency bonds and    foreign government bonds	$	137,743	$	184,266	$	—	$	322,009
States, municipalities and political subdivisions		—		550,855		—		550,855
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		380,418		—		380,418
Residential mortgage obligations		—		29,451		—		29,451
Asset-backed securities		—		235,714		—		235,714
Commercial mortgage-backed securities		—		188,169		—		188,169
Subtotal	$	—	$	833,752	$	—	$	833,752
Corporate bonds		—		771,104		—		771,104
Total fixed maturities	$	137,743	$	2,339,977	$	—	$	2,477,720
Equity securities		136,883		177,932		—		314,815
Short-term investments		211,782		—		—		211,782
Total assets measured at fair value	$	486,408	$	2,517,909	$	—	$	3,004,317
Senior notes		—		290,656		—		290,656
Total liabilities measured at fair value	$	—	$	290,656	$	—	$	290,656

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	December 31, 2015
amounts in thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds and    foreign government bonds	$	67,394	$	185,488	$	—	$	252,882
States, municipalities and political subdivisions		—		576,859		—		576,859
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		379,269		—		379,269
Residential mortgage obligations		—		30,465		—		30,465
Asset-backed securities		—		225,012		—		225,012
Commercial mortgage-backed securities		—		189,713		—		189,713
Subtotal	$	—	$	824,459	$	—	$	824,459
Corporate bonds		—		760,010		—		760,010
Total fixed maturities	$	67,394	$	2,346,816	$	—	$	2,414,210
Equity securities		126,455		178,816		—		305,271
Short-term investments		217,745		—		—		217,745
Total assets measured at fair value	$	411,594	$	2,525,632	$	—	$	2,937,226
Senior notes	$	—	$	282,486	$	—	$	282,486
Total liabilities measured at fair value	$	—	$	282,486	$	—	$	282,486

All other financial assets and liabilities including Cash, Premium receivable, Reinsurance recoverable and Reinsurance balances payable are carried at cost, which approximates fair value.

Our Company did not have any significant transfers between Level 1 and Level 2 classifications for the three months ended March 31, 2016 and 2015.

As of March 31, 2016 and 2015, our Company did not have any Level 3 assets.  

NOTE 5. CEDED REINSURANCE

As of March 31, 2016, the credit quality distribution of our Company’s Reinsurance recoverable of $1.1 billion for ceded paid losses, ceded unpaid losses and LAE, and ceded unearned premiums based on insurer financial strength ratings from A.M. Best or S&P was not significantly different from the credit quality distribution as of December 31, 2015.

Our allowance for uncollectible reinsurance was $6.9 million as of March 31, 2016 and December 31, 2015.

As of March 31, 2016, our 10 largest reinsurers measured by the amount of Reinsurance recoverable for ceded losses and LAE and ceded unearned premium, together with the reinsurance recoverable and collateral, were not significantly different from December 31, 2015.

NOTE 6.  COMMITMENTS AND CONTINGENCIES

In 2013, the State of Connecticut (“the State”) awarded our Company up to $11.5 million ($8.0 million in loans and $3.5 million in grants) to move our corporate headquarters to Stamford, Connecticut.  The loan is non-interest bearing, has a term of 10 years and is subject to forgiveness based on our compliance with certain conditions set forth in the agreement with the State.  The amount of the loan to be received is dependent on our Company reaching certain milestones for creation of new jobs over a five-year period, and the funds are to be used to offset certain equipment purchases, facility costs, training of employees and other eligible project-related costs.  Our Company completed the move to Stamford in September 2013 and received $7.5 million of the award, which is comprised of $6.0 million of the loan and $1.5 million of the grant for reaching the first job milestone.  Under the terms of the agreement with the State, the Company was required to maintain an average of 100 full-time employees in Connecticut over a 12-month period in order for the State to forgive the initial $6.0 million of the loan.  In addition, as soon as our Company achieved a total of  150 full-time employees in Connecticut, we became eligible to receive an additional $1.0 million of the loan and $0.5 million of the grant.  On October 20, 2015, our Company received a letter from the State determining that we had achieved both of these milestones.  As a result, our Company earned a loan forgiveness credit of $6.0 million with the State and received the  additional $1.0 million of the loan and $0.5 million of the grant.  Earning of the remaining portions of the grant and forgiveness of any outstanding amounts of the loan is subject to certain conditions, including maintaining a certain number of required jobs for an extended period of time.  The length of time commitment for forgiveness of the additional $1.0 million of the October 20, 2015 loan has not yet been met. However,

16

our Company expects to meet all the conditions for the State to forgive the loan. Accordingly, our Company is recognizing the amount of loan and grants received over the period in which offsetting expenses are recognized. Our Company recognized $0.4 million of the incentive for the three months ended March 31, 2016. As of March 31, 2016 and December 31, 2015, our Company has deferred revenue of $5.9 million and $6.3 million, respectively, which is included in Other liabilities on the Consolidated Balance Sheets.

In the ordinary course of conducting business, our Company’s subsidiaries are involved in various legal proceedings, either indirectly as insurers for parties to the proceedings or directly as defendants.  Most of these proceedings consist of claims litigation involving our 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.  Our Company accounts for such activity through the establishment of unpaid losses and LAE reserves. Our 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 our Company’s Consolidated Balance Sheets, Consolidated Statements of Income or Consolidated Statements of Cash Flows.

Our 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, our Company believes it has valid defenses to these cases. Our Company’s management expects that the ultimate liability, if any, with respect to future extra-contractual matters will not be material to our Consolidated Balance Sheets, Consolidated Statements of Income or Consolidated Statements of Cash Flows.  Nonetheless, given the large or indeterminate amounts sought in certain of these matters, and the inherent unpredictability of litigation, an adverse outcome in such matters could, from time to time, have a material adverse effect on our Company’s Consolidated Statements of Income or Consolidated Statements of Cash Flows in a particular fiscal quarter or year.

NOTE 7.  STOCK-BASED COMPENSATION

Stock-based compensation granted under our Company’s stock plans is expensed in tranches over the vesting period. Options and non-performance based grants generally vest equally over a three or four-year period and the options have a maximum term of ten years.  For the three months ended March 31, 2016, we granted 185,473 stock incentive units at a grant price between $80.98 and $86.68.  Each performance unit and restricted stock unit represents a contingent right to receive one share of common stock as of the vesting date.  Such common stock may be subject to forfeiture for the payment of any required tax withholding.

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

FORWARD-LOOKING STATEMENTS

Some of the statements in this Quarterly Report on Form 10-Q 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,” “may,” “will,” “intend,” “continue” 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, and are subject to a number of risks and uncertainties, including those described in the “Risk Factors” section of our 2015 Annual Report on Form 10-K.  We operate in a very competitive environment, with new risks emerging from time to time. We cannot assure you that anticipated results will be achieved, since actual results may differ materially because of both known and unknown risks and uncertainties which we face.

In light of these risks, uncertainties and assumptions, any forward-looking events discussed in this Form 10-Q may not occur, and we undertake no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law. You are cautioned not to place undue reliance on any forward-looking statements, which speak only as of their respective dates.

U.S. GAAP and Non-GAAP Financial Performance Metrics

Throughout this Quarterly Report, we present our operations in the way we believe will be most meaningful, useful and transparent to anyone using this financial information to evaluate our performance. In addition to the GAAP presentation of Net income, we show certain non-GAAP financial measures that we believe are valuable in managing our business and drawing comparisons to our peers. These measures are Underwriting profit (loss), Combined ratio, Net operating earnings, Net losses and LAE reserves and Book value and Book value per share.

The following is a list of GAAP and non-GAAP measures found throughout this report with their definitions, relationships to GAAP measures and explanations of their importance to our operations:

Underwriting Profit (Loss)

Underwriting profit (loss) represents one measure of the pretax profitability of our insurance operations and is derived by subtracting Net losses and LAE incurred, Commission expenses and Other operating expenses from Net earned premiums.  This information is available in total and by segment in Note 2 – Segment Information in the Interim Consolidated Financial Statements as of March 31, 2016.  The nearest comparable GAAP measure is Income before income taxes which, in addition to Net underwriting profit (loss), includes Net investment income, OTTI, Net realized gains (losses) on investments, Interest expense and Other income (loss).

Combined Ratio

The Combined ratio is a common insurance industry measure of profitability for any underwriting operation and is calculated in two components. First, the loss ratio is Net losses and LAE divided by Net earned premiums. The second component, the expense ratio, reflects the sum of Commission expenses and insurance operating expenses, divided by Net earned premiums. All items included in these components of the Combined ratio are presented in our GAAP Consolidated Financial Statements. The sum of the loss and expense ratios is the Combined ratio. The difference between the Combined ratio and 100% reflects the  rate of Underwriting profit (loss). For example, a Combined ratio of 85 percent implies that for every $100 of premium we earn, we record $15 of Underwriting profit.

Net Operating Earnings

Net operating earnings is calculated as Net income before after-tax Net realized gains (losses), after-tax OTTI losses recognized in earnings, and after-tax net realized and unrealized foreign exchange gains and losses resulting from foreign currency transactions (transactions denominated in a currency other than the entity’s functional currency) and translation adjustments (translation of foreign currency denominated assets and liabilities into U.S. dollars (“USD”)).

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Net Losses and LAE Reserves

Net losses and LAE reserves, as shown in the liabilities section of our Consolidated Balance Sheets, represents the total obligations to claimants for both estimates of known claims and estimates for incurred but not reported (“IBNR”) claims. The related asset item, Reinsurance balances recoverable on unpaid losses and LAE, is the estimate of both known claims and IBNR that we expect to recover from reinsurers. The net of these two items is generally referred to as Net losses and LAE reserves and is commonly used in our disclosures regarding the process of establishing these various estimated amounts.

Book Value and Book Value Per Share

Book value is equivalent to Stockholders’ equity and Book value per share is calculated by dividing Stockholders’ equity by the number of outstanding shares at the end of the interim period.

Overview

The discussion and analysis of our financial condition and results of operations contained herein should be read in conjunction with our 2015 Annual Report on Form 10-K in its entirety as well as the statements under “Forward-Looking Statements” and the Interim Consolidated Financial Statements included elsewhere in this Quarterly Report on Form 10-Q for a complete description of events, trends, uncertainties, risks and critical accounting estimates affecting us.

Unless the context requires otherwise, the terms “we,” “us,”  “our,” or “our Company” are used to mean The Navigators Group, Inc., a Delaware holding company established in 1982, and its subsidiaries.  The terms “Parent” or “Parent Company” are used to mean The Navigators Group, Inc. without its subsidiaries.

We are an international insurance company with a long-standing area of specialization in Marine insurance.  We also offer P&C insurance business, primarily General Liability coverage and umbrella & excess liability coverage to commercial enterprises through our Primary and Excess Casualty divisions.  We have also developed niches in Professional Liability insurance, through our D&O and E&O divisions.  Beginning in 2010, we added reinsurance products through our GlobalRe reporting segment.

Financial Highlights – Selected Indicators

	Three months ended
amounts in thousands, except per share amounts	March 31, 2016		March 31, 2015
Results of operations data:
Net earned premiums	$	264,358	$	236,132
Net investment income		19,594		16,253
Underwriting profit (loss)		13,048		18,175
Net income		22,932		25,929
Net income per diluted share	$	1.54	$	1.77
amounts in thousands, except per share amounts	March 31, 2016		December 31, 2015
Balance sheet data:
Total assets	$	4,696,633	$	4,584,012
Total shareholders' equity		1,143,879		1,096,148
Book value per share	$	78.72	$	75.96

Our revenue is primarily comprised of premiums and investment income.  Cash flow is generated from premiums collected and investment income received less paid losses and loss expenses, commission expenses and administrative expenses.  Our products are distributed through multiple channels, utilizing global, national and regional retail and wholesale insurance brokers.

We report our results of operations consistent with the manner in which our Chief Operating Decision Maker reviews the business to assess performance through our reportable segments: U.S. Insurance, Int’l Insurance, GlobalRe and Corporate.  

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Results of Operations

The following table presents a summary of our consolidated financial results for the three months ended March 31, 2016 and 2015:

	Three Months Ended March 31,						% Change
amounts in thousands	2016			2015			QTD
Gross written premiums	$	413,877		$	396,460			4.4	%
Ceded written premiums		(94,057	)		(107,502	)		(12.5	%)
Net written premiums		319,820			288,958			10.7	%
Net earned premiums		264,358			236,132			12.0	%
Net losses and LAE		(152,956	)		(130,198	)		17.5	%
Commission expenses		(37,554	)		(32,905	)		14.1	%
Other operating expenses		(60,809	)		(54,909	)		10.7	%
Other underwriting income (expense)		9			55			(83.6	%)
Underwriting profit (loss)	$	13,048		$	18,175			(28.2	%)
Net investment income		19,594			16,253			20.6	%
Net realized gains (losses)		1,597			5,596			(71.5	%)
Interest expense		(3,858	)		(3,855	)		0.1	%
Other income (loss)		2,540			2,187			16.2	%
Income (loss) before income taxes	$	32,921		$	38,356			(14.2	%)
Income tax (expense) benefit		(9,989	)		(12,427	)		(19.6	%)
Net income (loss)	$	22,932		$	25,929			(11.6	%)
Net income per diluted share	$	1.54		$	1.77
Effective tax rate		30.3	%		32.4	%
Losses and LAE ratio		57.9	%		55.1	%
Commission expense ratio		14.2	%		13.9	%
Other operating expense ratio (1)		23.0	%		23.3	%
Combined ratio		95.1	%		92.3	%

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

The following table calculates our Net operating earnings for the three months ended March 31, 2016 and 2015:

	Three Months Ended March 31,						% Change
amounts in thousands	2016			2015			QTD
Net income	$	22,932		$	25,929			(11.6	%)
After-tax realized losses (gains)		(1,038	)		(3,637	)		(71.5	%)
After-tax FX losses (gains)		(1,652	)		(1,422	)		16.2	%
Net operating earnings	$	20,242		$	20,870			(3.0	%)
Net operating earnings per common share:
Basic	$	1.40		$	1.46
Diluted	$	1.36		$	1.43

Underwriting Profit (Loss)

Underwriting profit was $13.0 million for the three months ended March 31, 2016 comprised of $8.5 million, $0.5 million, and $4.0 million for our U.S. Insurance, Int’l Insurance and GlobalRe reporting segments, respectively.  Underwriting profit was $18.2 million for the three months ended March 31, 2015 comprised of $5.5 million, $7.4 million, and $5.3million for our U.S. Insurance, Int’l Insurance and GlobalRe reporting segments, respectively.  For additional information on the drivers of Underwriting profit see the U.S. Insurance, Int’l Insurance and GlobalRe reporting segment results sections included herein.

20

A major component of our Underwriting profit (loss) is due to Net losses and LAE.  The following table presents the impact of changes in reserves and reinsurance reinstatement premiums (“RRPs”) on our Net losses and LAE ratio for the three months ended March 31, 2016 and 2015 (note: accident year is abbreviated “AY”):

	Three Months Ended March 31,						Point
	2016			2015			Change
Net losses and LAE ratio, reported		57.9	%		55.1	%		2.8
RRPs		0.2	%		-0.1	%		0.3
Net current AY release/(development)		-0.9	%		-1.1	%		0.2
Net prior AY release/(strengthening)		0.7	%		5.3	%		-4.6
Net losses and LAE ratio, adjusted		57.9	%		59.2	%		-1.3

For the three months ended March 31, 2016, we recorded $1.8 million of net prior AY reserve releases primarily driven by $2.7 million from our U.S. Insurance reporting segment due to favorable loss emergence, partially offset by $0.9 million of reserve strengthening in our Int’l Insurance reporting segment.  The favorable net prior AY reserve releases were partially offset by $2.4 million of current AY development related to large loss activity in our Int’l P&C operating segment and our GlobalRe reporting segment.

For the three months ended March 31, 2015, we recorded $12.6 million of net prior AY reserve releases primarily driven by $6.4 million and $6.2 million of reserve releases from our U.S. Insurance and Int’l Insurance reporting segments, respectively, due to favorable loss emergence as well as a decrease in provision for uncollectible reinsurance due to payments of outstanding balances from one of our large reinsurers. The favorable prior AY reserve releases were partially offset by $2.5 million of current AY losses from our Int’l Insurance reporting segment related to large loss activity.

Net Investment Income

Our Net investment income was derived from the following sources:

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities	$	16,737		$	15,047
Equity securities		3,447			1,968
Short-term investments		210			183
Total investment income	$	20,394		$	17,198
Investment expenses		(800	)		(945	)
Net investment income	$	19,594		$	16,253

The increase in Total investment income for the three months ended March 31, 2016 as compared to the same period in the prior year was primarily due to growth of invested assets, coupled with an increase in the overall portfolio yield, mostly due to the increased allocation to preferred stocks. The annualized pre-tax yield, excluding Net realized gains and losses and OTTI losses recognized in earnings, for the three months ended March 31, 2016 and 2015, was 2.7% and 2.4%, respectively.  

As part of our overall investment strategy, we seek to build a tax efficient investment portfolio.  The tax exempt or tax efficient portfolio was 18.8% of the fixed maturities portfolio as of March 31, 2016.  Additionally, substantially all of our equity portfolio is invested in tax efficient securities which qualify for the dividends received deduction.  The tax equivalent yield for the three months ended March 31, 2016 and 2015, was 2.9% and 2.5%, respectively.

OTTI Losses Recognized in Earnings

Our Company did not have any credit related OTTI losses during the three months ended March 31, 2016 and 2015.

21

Net Realized Gains and Losses

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

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities:
Gains	$	2,548		$	1,174
Losses		(1,127	)		(572	)
Fixed maturities, net	$	1,421		$	602
Short-term:
Gains	$	268		$	8
Losses		(83	)		(162	)
Short-term, net	$	185		$	(154	)
Equity securities:
Gains	$	609		$	6,325
Losses		(618	)		(1,177	)
Equity securities, net	$	(9	)	$	5,148
Net realized gains (losses)	$	1,597		$	5,596

Net realized gains and losses are generated as part of the normal ongoing management of our investment portfolio. Net realized gains of $1.6 million for the three months ended March 31, 2016 are primarily due to the sale of municipal and corporate bonds, partially offset by realized losses in the Fixed maturities portfolio primarily driven by foreign currency losses on our Canadian portfolio.  Net realized gains of $5.6 million for the three months ended March 31, 2015 are primarily due to the sale of Equity securities.

Interest Expense

Interest expense was $3.9 million for both the three months ended March 31, 2016 and 2015 relating to our $265.0 million principal amount of the Senior notes.  The effective interest rate related to the Senior notes, based on the proceeds net of discount and all issuance costs, is approximately 5.86%.  

Other Income (Loss)

Other income (loss) for the three months ended March 31, 2016 and March 31, 2015 was a $2.5 million gain and a $2.2 million gain, respectively.  Other income (loss) primarily consists of realized and unrealized foreign exchange gains and losses.  The current quarter foreign exchange gains are mostly driven by the strengthening of the USD against the Great Britain Pound (“GBP”).  

Income Taxes

We recorded an Effective tax rate of 30.3% for the three months ended March 31, 2016, compared to 32.4% for the same period in 2015.  The decrease of 2.1 points is driven by the benefit of the dividends received deduction from our increased investment portfolio allocation to preferred stocks.  The income tax provision has been computed based on our estimated annual effective tax rate.  Our Effective tax rate for the quarter differs from the federal tax rate of 35% principally due to tax-exempt investment income and dividends received deduction.

22

Segment Results

The following tables summarize our consolidated financial results by reporting segment for the three months ended March 31, 2016 and 2015:

	Three Months Ended March 31, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	148,340		$	78,008		$	38,010		$	—		$	264,358
Net losses and LAE		(91,512	)		(40,410	)		(21,034	)		—			(152,956	)
Commission expenses		(14,855	)		(15,355	)		(7,745	)		401			(37,554	)
Other operating expenses		(33,761	)		(21,771	)		(5,277	)		—			(60,809	)
Other underwriting income (expense)		361			—			49			(401	)		9
Underwriting profit (loss)	$	8,573		$	472		$	4,003		$	—		$	13,048
Net investment income											19,594			19,594
Net realized gains (losses)											1,597			1,597
Interest expense											(3,858	)		(3,858	)
Other income (loss)											2,540			2,540
Income before income taxes	$	8,573		$	472		$	4,003		$	19,873		$	32,921
Income tax (expense) benefit											(9,989	)		(9,989	)
Net income (loss)													$	22,932
Losses and LAE ratio		61.7	%		51.8	%		55.3	%					57.9	%
Commission expense ratio		10.0	%		19.7	%		20.4	%					14.2	%
Other operating expense ratio (2)		22.5	%		27.9	%		13.8	%					23.0	%
Combined ratio		94.2	%		99.4	%		89.5	%					95.1	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

	Three Months Ended March 31, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	131,091		$	65,525		$	39,516		$	—		$	236,132
Net losses and LAE		(77,799	)		(29,691	)		(22,708	)		—			(130,198	)
Commission expenses		(14,345	)		(11,413	)		(7,298	)		151			(32,905	)
Other operating expenses		(33,688	)		(17,009	)		(4,212	)		—			(54,909	)
Other underwriting income (expense)		196			—			10			(151	)		55
Underwriting profit (loss)	$	5,455		$	7,412		$	5,308		$	—		$	18,175
Net investment income											16,253			16,253
Net realized gains (losses)											5,596			5,596
Interest expense											(3,855	)		(3,855	)
Other income (loss)											2,187			2,187
Income before income taxes	$	5,455		$	7,412		$	5,308		$	20,181		$	38,356
Income tax (expense) benefit											(12,427	)		(12,427	)
Net income (loss)													$	25,929
Losses and LAE ratio		59.3	%		45.3	%		57.5	%					55.1	%
Commission expense ratio		10.9	%		17.4	%		18.5	%					13.9	%
Other operating expense ratio (2)		25.6	%		26.0	%		10.6	%					23.3	%
Combined ratio		95.8	%		88.7	%		86.6	%					92.3	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

23

U.S. Insurance

The following tables summarize our Underwriting profit (loss) by operating segment for our U.S. Insurance reporting segment for the three months ended March 31, 2016 and 2015:

	U.S. Insurance
	Three Months Ended March 31, 2016
amounts in thousands	Marine			P&C			Professional Liability			Total			%Change Total
Gross written premiums	$	43,163		$	141,278		$	26,206		$	210,647			5.7	%
Ceded written premiums		(17,647	)		(30,507	)		(6,343	)		(54,497	)		(20.7	%)
Net written premiums		25,516			110,771			19,863			156,150			19.6	%
Net earned premiums	$	23,250		$	109,159		$	15,931		$	148,340			13.2	%
Net losses and LAE		(9,775	)		(71,597	)		(10,140	)		(91,512	)		17.6	%
Commission expenses		(1,482	)		(11,852	)		(1,521	)		(14,855	)		3.6	%
Other operating expenses		(7,372	)		(21,522	)		(4,867	)		(33,761	)		0.2	%
Other underwriting income (expense)		79			268			14			361			84.2	%
Underwriting profit (loss)	$	4,700		$	4,456		$	(583	)	$	8,573			57.2	%
Losses and LAE ratio		42.0	%		65.6	%		63.7	%		61.7	%
Commission expense ratio		6.4	%		10.9	%		9.5	%		10.0	%
Other operating expense ratio (1)		31.4	%		19.4	%		30.5	%		22.5	%
Combined ratio		79.8	%		95.9	%		103.7	%		94.2	%

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

	U.S. Insurance
	Three Months Ended March 31, 2015
amounts in thousands	Marine			P&C			Professional Liability			Total
Gross written premiums	$	40,835		$	134,146		$	24,346		$	199,327
Ceded written premiums		(16,286	)		(39,558	)		(12,886	)		(68,730	)
Net written premiums		24,549			94,588			11,460			130,597
Net earned premiums	$	23,924		$	90,735		$	16,432		$	131,091
Net losses and LAE		(10,188	)		(58,047	)		(9,564	)		(77,799	)
Commission expenses		(4,032	)		(8,556	)		(1,757	)		(14,345	)
Other operating expenses		(6,973	)		(21,059	)		(5,656	)		(33,688	)
Other underwriting income (expense)		151			44			1			196
Underwriting profit (loss)	$	2,882		$	3,117		$	(544	)	$	5,455
Losses and LAE ratio		42.6	%		64.0	%		58.2	%		59.3	%
Commission expense ratio		16.9	%		9.4	%		10.7	%		10.9	%
Other operating expense ratio (1)		28.5	%		23.2	%		34.4	%		25.6	%
Combined ratio		88.0	%		96.6	%		103.3	%		95.8	%

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

Gross Written Premiums

Gross written premiums increased $11.3 million for the three months ended March 31, 2016 compared to the same period in 2015 driven by a $7.1 million increase in our U.S. P&C operating segment, primarily comprised of an increase of $5.9 million in our Primary Casualty division and $2.9 million in our Specialty Auto division due to new business production. In addition, our U.S. Marine operating segment increased $2.3 million primarily due to an increase in premium rates on renewal business and new business growth in several key product lines. Our U.S. Professional Liability operating segment increased $1.9 million benefitting from new business production.

Average renewal premium rates for our U.S. Insurance reporting segment for the three months ended March 31, 2016 increased 0.6%, driven by an increase of 4.9% and 0.5% in our U.S. Marine and U.S. Professional Liability operating segments, respectively, partially offset by a decline of 1.3% in our U.S. P&C operating segment. The impact of the decrease in rates within our U.S. P&C operating segment was offset by new business production.

24

Ceded Written Premiums

Ceded written premiums decreased $14.2 million for the three months ended March 31, 2016 compared to the same period in 2015,  primarily due to a reduction in our proportional reinsurance coverage on our Excess Casualty and Environmental casualty risks in the third quarter of 2015 as well as the nonrenewal of our Professional Liability proportional treaty in the fourth quarter 2015.

Net Earned Premiums

Net earned premiums increased $17.2 million for the three months ended March 31, 2016 compared to the same period in 2015, primarily due to growth in Gross written premiums and a reduced level of proportional reinsurance that supports certain casualty risks within our U.S. P&C operating segment.

Net Losses and LAE

The Net losses and LAE reserves as of March 31, 2016 and December 31, 2015 are as follows:

	U.S. Insurance
	As of  March 31, 2016								As of  December 31, 2015
amounts in thousands	Marine		P&C		Professional Liability		Total		Marine		P&C		Professional Liability		Total		Total % Change
Case reserves	$	61,330	$	181,868	$	35,188	$	278,386	$	68,677	$	170,988	$	42,546	$	282,211		(1.4	%)
IBNR reserves		52,905		539,950		60,167		653,022		55,408		514,777		60,528		630,713		3.5	%
Total	$	114,235	$	721,818	$	95,355	$	931,408	$	124,085	$	685,765	$	103,074	$	912,924		2.0	%

The following table presents the impact of RRPs and reserve development on our Net losses and LAE ratio for the three months ended March 31, 2016 and 2015:

	U.S. Insurance
	Three Months Ended March 31, 2016												Three Months Ended March 31, 2015
							Professional												Professional						Point
	Marine			P&C			Liability			Total			Marine			P&C			Liability			Total			Change
Net losses and LAE ratio, reported		42.0	%		65.6	%		63.7	%		61.7	%		42.6	%		64.0	%		58.2	%		59.3	%		2.4
RRPs		0.4	%		0.0	%		0.0	%		0.1	%		-2.5	%		0.1	%		0.0	%		-0.6	%		0.7
Net current AY release/(development)		0.0	%		0.0	%		0.0	%		0.0	%		0.0	%		0.0	%		0.0	%		0.0	%		0.0
Net prior AY release/(strengthening)		16.2	%		-1.0	%		0.0	%		1.8	%		17.7	%		1.2	%		5.3	%		4.8	%		-3.0
Net losses and LAE ratio, adjusted		58.6	%		64.6	%		63.7	%		63.6	%		57.8	%		65.3	%		63.5	%		63.5	%		0.1

Our U.S. Insurance reporting segment recorded $2.7 million of net prior AY reserve releases for the three months ended March 31, 2016, driven by $3.7 million of reserve releases from our U.S. Marine operating segment, partially offset by $1.0 million reserve strengthening in our U.S. P&C operating segment, due to large loss activity within our Primary Casualty division.

Our U.S. Insurance reporting segment recorded $6.4 million of net prior AY reserve releases for the three months ended March 31, 2015, driven by $4.5 million of reserve releases from our U.S. Marine operating segment due to favorable loss emergence, and $1.0 million and $0.9 million from our U.S. P&C and U.S. Professional Liability operating segments, respectively, due to favorable bad debt releases. The loss ratio was also unfavorably impacted by $1.5 million of RRPs recorded, mostly in our U.S. Marine operating segment.

The changes in Net losses and LAE ratio, as adjusted, are primarily due to the mix of business earned in the applicable period.

Commission Expenses

The Commission expense ratio for the three months ended March 31, 2016 decreased 0.9 points as compared to the same period in 2015, primarily driven by a decrease in profit commission expense within our U.S. Marine operating segment, coupled with greater ceding commissions earned across our U.S. Marine and U.S. Professional Liability operating segments related to increases in proportional reinsurance programs put in place in the third quarter of 2014 through the first quarter of 2015.  This was offset by a reduction in ceded commission earnings within our U.S. P&C operating segment, due to reductions in our proportional reinsurance that supports our Excess Casualty and Environmental casualty risks in the third quarter of 2015.  

25

Other Operating Expenses

Other operating expenses remained flat for the three months ended March 31, 2016 compared to the same period in 2015.

Int’l Insurance

The following tables summarize our Underwriting profit (loss) by operating segment for our Int’l Insurance reporting segment for the three months ended March 31, 2016 and 2015: 

	Int'l Insurance
	Three Months Ended March 31, 2016
amounts in thousands	Marine			P&C			Professional Liability			Total			% Change Total
Gross written premiums	$	71,948		$	44,046		$	28,149		$	144,143			17.7	%
Ceded written premiums		(11,089	)		(17,229	)		(6,653	)		(34,971	)		2.1	%
Net written premiums		60,859			26,817			21,496			109,172			23.8	%
Net earned premiums	$	38,856		$	21,209		$	17,943		$	78,008			19.1	%
Net losses and LAE		(20,088	)		(11,216	)		(9,106	)		(40,410	)		36.1	%
Commission expenses		(9,405	)		(2,775	)		(3,175	)		(15,355	)		34.5	%
Other operating expenses		(8,442	)		(8,708	)		(4,621	)		(21,771	)		28.0	%
Other underwriting income (expense)		—			—			—			—		NM
Underwriting profit (loss)	$	921		$	(1,490	)	$	1,041		$	472			(93.6	%)
Losses and LAE ratio		51.7	%		52.9	%		50.7	%		51.8	%
Commission expense ratio		24.2	%		13.1	%		17.7	%		19.7	%
Other operating expense ratio (1)		21.7	%		41.0	%		25.8	%		27.9	%
Combined ratio		97.6	%		107.0	%		94.2	%		99.4	%

NM - Percentage change not meaningful

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

	Int'l Insurance
	Three Months Ended March 31, 2015
amounts in thousands	Marine			P&C			Professional Liability			Total
Gross written premiums	$	67,410		$	32,950		$	22,067		$	122,427
Ceded written premiums		(10,822	)		(16,129	)		(7,305	)		(34,256	)
Net written premiums		56,588			16,821			14,762			88,171
Net earned premiums	$	37,792		$	16,034		$	11,699		$	65,525
Net losses and LAE		(19,511	)		(4,880	)		(5,300	)		(29,691	)
Commission expenses		(9,190	)		(1,027	)		(1,196	)		(11,413	)
Other operating expenses		(6,695	)		(5,984	)		(4,330	)		(17,009	)
Other underwriting income (expense)		—			—			—			—
Underwriting profit (loss)	$	2,396		$	4,143		$	873		$	7,412
Losses and LAE ratio		51.6	%		30.4	%		45.3	%		45.3	%
Commission expense ratio		24.3	%		6.4	%		10.2	%		17.4	%
Other operating expense ratio (1)		17.8	%		37.4	%		37.0	%		26.0	%
Combined ratio		93.7	%		74.2	%		92.5	%		88.7	%

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

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Gross Written Premiums

Gross written premiums increased $21.7 million for the three months ended March 31, 2016 compared to the same period in 2015, driven by growth in all Int’l Insurance reporting segments. Our Int’l Marine operating segment increased by $4.5 million driven by strong performance in our European offices in our Cargo and Transport products, partially offset by a decrease in our Marine Liability product. Our Int’l P&C operating segment has increased by $11.1 million, primarily driven by continued growth in our Property division as well as strong new business production in our Onshore Energy and Other Energy and Engineering products partially offset by a decrease in our Offshore Energy product in our Energy and Engineering division.  Our Int’l Professional Liability operating segment has increased by $6.1 million, primarily driven by a $4.3 million increase in our E&O and D&O divisions.

Average renewal premium rates for our Int’l Insurance reporting segment for the three months ended March 31, 2016 decreased 2.6%.  The decline for the three months was driven by decreases of 9.7% in our Int’l P&C operating segment, mostly in our Offshore Energy product, and 0.9% in our Int’l Marine operating segment offset by an increase of 0.8% in our Int’l Professional Liability operating segment.

Ceded Written Premiums

Ceded written premiums increased $0.7 million for the three months ended March 31, 2016 compared to the same period in 2015, primarily driven by a $1.7 million minimum deposit adjustment relating to growth in the Property division in our Int’l P&C operating segment and, to a lesser extent, changes in our business mix and our proportional reinsurance programs.  

Net Earned Premiums

Net earned premiums increased $12.5 million for the three months ended March 31, 2016 as compared to the same period in 2015 driven by continued growth in our Int’l Professional Liability operating segment, specifically in the E&O product and growth in our Property division within our Int’l P&C operating segment due to continued growth in Property business within North America and a strong performance from international Property business which launched in the second half of 2015.

Net Losses and LAE

The Net losses and LAE reserves as of March 31, 2016 and December 31, 2015 are as follows:

	Int'l Insurance
	As of  March 31, 2016								As of  December 31, 2015
amounts in thousands	Marine		P&C		Professional Liability		Total		Marine		P&C		Professional Liability		Total		Total % Change
Case reserves	$	168,371	$	42,189	$	27,136	$	237,696	$	167,157	$	40,313	$	19,583	$	227,053		4.7	%
IBNR reserves		60,951		21,437		62,123		144,511		61,409		19,735		63,229		144,373		0.1	%
Total	$	229,322	$	63,626	$	89,259	$	382,207	$	228,566	$	60,048	$	82,812	$	371,426		2.9	%

The following table presents the impact of RRPs and reserve development on our Net losses and LAE ratio for three months ended March 31, 2016 and 2015:

	Int'l Insurance
	Three Months Ended March 31, 2016												Three Months Ended March 31, 2015
							Professional												Professional						Point
	Marine			P&C			Liability			Total			Marine			P&C			Liability			Total			Change
Net losses and LAE ratio, reported		51.7	%		52.9	%		50.7	%		51.8	%		51.6	%		30.4	%		45.3	%		45.3	%		6.5
RRPs		-0.1	%		0.0	%		0.0	%		0.0	%		1.1	%		0.1	%		0.0	%		0.6	%		-0.6
Net current AY release/(development)		0.0	%		-8.7	%		0.0	%		-2.4	%		-6.8	%		0.0	%		0.0	%		-3.9	%		1.5
Net prior AY release/(strengthening)		0.4	%		-4.7	%		0.0	%		-1.1	%		9.1	%		12.4	%		7.0	%		9.6	%		-10.7
Net losses and LAE ratio, adjusted		52.0	%		39.5	%		50.7	%		48.3	%		55.0	%		42.9	%		52.3	%		51.6	%		-3.3

For the three months ended March 31, 2016, our Int’l Insurance reporting segment recorded $1.8 million of net current AY reserve development on our Energy & Engineering division and Property division within our Int’l P&C operating segment and $0.9 million of net prior AY reserve strengthening primarily driven by our Int’l P&C operating segment due to large loss activity.

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For the three months ended March 31, 2015, our Int’l Insurance reporting segment recorded $2.5 million of net current AY reserve development on Protection and Indemnity Insurance (“P&I”) within our Int’l Marine operating segment and $6.2M of net prior AY releases primarily driven by $3.4 million relating to P&I within our Int’l Marine operating segment, $1.9 million relating to Offshore Energy within our Int’l P&C operating segment and to a lesser extent $0.8 million from our Int’l Professional Liability operating segment.

The changes in Net losses and LAE ratio, as adjusted, are primarily due to the mix of business earned.

Commission Expenses

The Commission expense ratio for the three months ended March 31, 2016 increased 2.3 points, as compared to the same period in 2015, driven by mix of business earned within our Int’l P&C and Int’l Professional Liability operating segments. In addition, profit commission expense increased $0.8 million compared to the same period in 2015 primarily due to our Int’l Marine operating segment.

Other Operating Expenses

For the three months ended March 31, 2016, Other operating expenses increased $4.8 million as compared to the same period in 2015 due to continued investment in new underwriting teams and support staff, partially offset by favorable foreign exchange rates.

GlobalRe

The following tables summarize our Underwriting profit (loss) for our GlobalRe reporting segment for the three months ended March 31, 2016 and 2015:

	GlobalRe
	Three Months Ended March 31,
amounts in thousands	2016			2015			% Change
Gross written premiums	$	59,087		$	74,706			(20.9	%)
Ceded written premiums		(4,589	)		(4,516	)		1.6	%
Net written premiums		54,498			70,190			(22.4	%)
Net earned premiums	$	38,010		$	39,516			(3.8	%)
Net losses and LAE		(21,034	)		(22,708	)		(7.4	%)
Commission expenses		(7,745	)		(7,298	)		6.1	%
Other operating expenses		(5,277	)		(4,212	)		25.3	%
Other underwriting income (expense)		49			10		NM
Underwriting profit (loss)	$	4,003		$	5,308			(24.6	%)
Losses and LAE ratio		55.3	%		57.5	%
Commission expense ratio		20.4	%		18.5	%
Other operating expense ratio (1)		13.8	%		10.6	%
Combined ratio		89.5	%		86.6	%

NM- Percentage change not meaningful

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

Gross Written Premiums

Gross written premiums decreased $15.6 million for the three months ended March 31, 2016 compared to the same period in 2015, primarily due to non-renewals within our Accident & Health (“A&H”) product, partially offset by year over year written premium growth in our P&C and Agriculture products.

Ceded Written Premiums

Ceded written premiums increased $0.1 million for the three months ended March 31, 2016, compared to the same period in 2015, primarily due to increased net reinstatement premium in our P&C and Marine products, offset by lower cost of retrocessional treaties in our P&C product.

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Net Earned Premiums

Net earned premiums decreased $1.5 million for the three months ended March 31, 2016 compared to the same period in 2015, primarily due to non-renewals within our A&H product, partially offset by year over year growth in our P&C and Agriculture products.

Net Losses and LAE

The Net losses and LAE reserves as of March 31, 2016 and December 31, 2015 are as follows:

	GlobalRe
	As of
amounts in thousands	March 31, 2016		December 31, 2015		% Change
Case reserves	$	37,309	$	32,160		16.0	%
IBNR reserves		67,292		76,616		(12.2	%)
Total	$	104,601	$	108,776		(3.8	%)

The following table presents the impact of RRPs and reserve development on our Net losses and LAE ratio for the three months ended March 31, 2016 and 2015:

	GlobalRe
	Three Months Ended March 31,						Point
	2016			2015			Change
Net losses and LAE ratio, reported		55.3	%		57.5	%		-2.2
RRPs		0.9	%		0.2	%		0.7
Net current AY release/(development)		-1.6	%		0.0	%		-1.6
Net prior AY release/(strengthening)		0.1	%		0.0	%		0.1
Net losses and LAE ratio, adjusted		54.7	%		57.7	%		-3.0

Our GlobalRe reporting segment recorded $0.6 million of current AY development for the three months ended March 31, 2016 compared to the same period in 2015, primarily driven by loss activity in our P&C product. In addition, $0.6 million of RRPs received in our Marine and P&C products reduced our Net losses and LAE ratio.  

Commission Expenses

The Commission expense ratio increased 1.9 points for the three months ended March 31, 2016 compared to the same period in 2015, due to mix of business changes, particularly a decrease in our A&H and Professional Liability excess of loss products which carry a lower commission rate.  

Other Operating Expenses

Other operating expenses increased $1.1 million for the three months ended March 31, 2016 compared to the same period in 2015.  The increase is due to employee expenses related to continued investment in our underwriting teams and support staff.

Capital Resources and Liquidity

Capital Resources

Our capital resources consist of funds deployed or available to be deployed to support our business operations.  As of March 31, 2016 and December 31, 2015, our capital resources were as follows:

	As of
amounts in thousands	March 31, 2016			December 31, 2015
Senior notes	$	263,616		$	263,580
Stockholders' equity		1,143,879			1,096,148
Total capitalization	$	1,407,495		$	1,359,728
Ratio of debt to total capitalization		18.7	%		19.4	%

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We primarily rely upon dividends from our subsidiaries to meet our Parent Company’s obligations.  Our Parent Company’s cash obligations primarily consist of semi-annual (April and October) interest payments of $7.6 million on the Senior notes.  Going forward, the interest payments may be made from funds held at our Parent Company or dividends from its subsidiaries.

Navigators Insurance Company may pay dividends to our Parent Company out of its statutory earned surplus pursuant to statutory restrictions imposed under the New York insurance law.  As of March 31, 2016, the maximum amount available for the payment of dividends by Navigators Insurance Company in 2016 without prior regulatory approval is $94.9 million.

Navigators Corporate Underwriters, Ltd., our wholly-owned corporate member at Lloyd’s, may pay dividends to our Parent Company up to the extent of available profits that have been distributed from the Syndicate.  As of March 31, 2016, that amount was $1.1 million (£0.8 million).

Senior Notes and Credit Facility

On October 4, 2013, we completed a public debt offering for $265.0 million of 5.75% Senior notes and received net proceeds of $263.3 million. The effective interest rate related to the net proceeds received from the 5.75% Senior notes is approximately 5.86%.  Interest is payable on the 5.75% Senior notes each April 15 and October 15.

On November 6, 2014, NUAL entered into a credit facility for 8.0 million Australian Dollars with Barclays Bank PLC. Interest is payable under this facility at a rate of 2.0% per annum above a floating rate tied to the average mid-rate for Australian bills of exchange administered by the Australian Financial Markets Association. The facility may be cancelled by either party after providing written notice.  This credit facility contains customary covenants for facilities of this type, including a restriction on future encumbrances that are outside the ordinary course of business, and a requirement to maintain at least £75.0 million of Funds at Lloyd’s. As of March 31, 2016, letters of credit with an aggregate face amount of 8.0 million Australian Dollars were outstanding under the credit facility, and our Company was in compliance with all covenants.

On November 24, 2014, we entered into a $175.0 million credit facility agreement with ING Bank N.V., London Branch, individually and as Administrative Agent and a syndicate of lenders, which is secured by all the common stock of NIC and requires us to maintain at least forty percent of the outstanding amounts under such facility as Funds at Lloyd’s. In addition, in order to support the increased underwriting capacity of the Syndicate for the 2016 underwriting year (“UWY”), we entered into $25.0 million credit facility with ING Bank N.V., London Branch on November 20, 2015. Both of these facilities, as well as the November 6, 2014 facility, are used to fund underwriting obligations at Lloyd’s for the 2016 UWY, as well as open prior UWYs.

The November 20, 2015 credit facility is a non-committed facility which has an applicable fee rate ranging from 0.85% to 1.20% per annum based upon the Company’s S&P rating. For the November 24, 2014 credit facility, the applicable fee rate payable ranges from 0.95% to 1.60% per annum based on a tiered schedule that is based on our then-current financial strength ratings issued by S&P and A.M. Best and the amount of our own collateral utilized to fund our participation in the Syndicate.  The letters of credit issued under both of these facilities can be denominated in British pounds and their aggregate face amount will fluctuate based on exchange rates.  If any letters of credit remain outstanding under these facilities after December 31, 2016, we would be required to post additional collateral to secure the remaining letters of credit.  As of March 31, 2016, letters of credit with an aggregate face amount of $20.0 million and $175.0 million were outstanding under the November 20, 2015 and November 24, 2014 credit facilities, respectively, and we had an aggregate of $3.4 million of cash collateral posted.

Each of the November 20, 2015 and November 24, 2014 credit facilities 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. These credit facilities also provide 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 our Company being false in any material respect, default under certain other indebtedness, certain insolvency or receivership events affecting our Company and our subsidiaries, the occurrence of certain material judgments, or a change in control of our Company.  As of March 31, 2016, our Company was in compliance with all covenants.

Shelf Registration

We generally maintain the ability to issue certain classes of debt and equity securities via a universal shelf registration statement filed with the SEC, which is renewed every three years. The shelf registration provides us the means to access the debt and equity markets relatively quickly.  Our current shelf registration, which was filed on April 14, 2015 with the SEC, expires in 2018. This report is not an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state.

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Consolidated Cash Flows

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

We believe that we have adequately managed our cash flow requirements related to reinsurance recoveries from their 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 our Company.  The payment of gross claims and related collections from reinsurers with respect to large losses could significantly impact our liquidity needs.  However, in general, we expect to collect our paid reinsurance recoverables under the terms described above.  

Net cash provided by operating activities was $38.5 million for the three months ended March 31, 2016 compared to net cash used in operating activities of $4.9 million for the same period in 2015.  The net increase in cash flow from operations during the three months ended March 31, 2016 was primarily due to increased premium collections and to a lesser extent more timely collections of reinsurance recoverables on paid losses.

Net cash used in investing activities was $36.7 million for the three months ended March 31, 2016 compared to net cash provided by investing activities of $4.2 million for the comparable period in 2015.  Fluctuations in cash provided by, or used in, investing activities is primarily due to changes in operating cash flows and the associated ongoing management of our investment portfolio.

Net cash provided by financing activities was $0.9 million for the three months ended March 31, 2016.   There was no cash flow from financing activities for the comparable period in 2015. The fluctuation in cash provided by financing activities is primarily the result of transactions in our employee stock purchase plan.

Investments

Our investment portfolio is invested primarily in publicly traded, investment grade, fixed income securities with an average credit quality of AA-/Aa3 as rated by S&P or Moody’s Investors Service (“Moody’s”).  As of March 31, 2016, our portfolio had a duration of 3.7 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 March 31, 2016 and December 31, 2015, all Fixed maturities and Equity securities held by us were classified as available-for-sale.

The portfolio is externally managed by independent, professional investment managers and is broadly diversified across geographies, sectors, and issuers. The primary objectives are to maximize total investment return in the context of preserving the statutory surplus of the insurance companies and enhancing shareholder value.  As part of our overall investment strategy, we seek to build a tax efficient investment portfolio.  As of March 31, 2016, the tax-exempt portion of our Fixed maturities portfolio was 18.8%.  Additionally, substantially all of our equity portfolio is invested in tax efficient securities which qualify for the dividends received deduction.  The investments are subject to the oversight of the respective insurance companies’ Boards of Directors and the Finance Committee of our Parent Company’s Board of Directors.

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

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The following table summarizes the composition of our investments at fair value:

	Fair Value as of
amounts in thousands	March 31, 2016		December 31, 2015		% Change
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign government bonds	$	322,009	$	252,882		27.3	%
States, municipalities and political subdivisions		550,855		576,859		(4.5	%)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		380,418		379,269		0.3	%
Residential mortgage obligations		29,451		30,465		(3.3	%)
Asset-backed securities		235,714		225,012		4.8	%
Commercial mortgage-backed securities		188,169		189,713		(0.8	%)
Subtotal	$	833,752	$	824,459		1.1	%
Corporate bonds		771,104		760,010		1.5	%
Total fixed maturities	$	2,477,720	$	2,414,210		2.6	%
Equity securities		314,815		305,271		3.1	%
Short-term investments		211,782		217,745		(2.7	%)
Total investments	$	3,004,317	$	2,937,226		2.3	%

Invested assets increased from December 31, 2015 due to a decrease in Treasury rates and a rally in the equity markets which resulted in increased unrealized gains. Additionally, positive cash flow from operations was directed to the investment portfolio resulting in growth in invested assets. During the quarter, we reduced our allocation to longer dated municipal bonds in an effort to reduce duration.  Operating cash flows were invested in short duration U.S. Treasuries as we await market opportunities.  

The following table sets forth the amount of our Fixed maturities as of March 31, 2016 by S&P credit rating or, if an S&P rating is not available, the equivalent Moody’s rating. The total rating is the weighted average quality rating for the Fixed maturities portfolio as a whole.

		As of  March 31, 2016
amounts in thousands	Rating	Fair Value		Amortized Cost
Rating description:
Extremely strong	AAA	$	424,307	$	421,692
Very strong	AA		1,036,319		1,006,999
Strong	A		688,959		676,659
Adequate	BBB		277,031		271,550
Speculative	BB & Below		51,074		55,907
Not rated	NR		30		30
Total	AA-	$	2,477,720	$	2,432,837

The following table sets forth the composition of the non-government guaranteed Fixed maturities categorized by asset class and generally equivalent S&P and Moody’s ratings (not all securities in our portfolio are rated by both S&P and Moody’s) as of March 31, 2016:

	As of  March 31, 2016
amounts in thousands	AAA		AA		A		BBB		BB and below		NR		Fair Value		Amortized Cost
Municipal bonds	$	41,070	$	346,219	$	145,423	$	18,113	$	—	$	30		550,855		525,267
Agency residential mortgage-backed		—		380,418		—		—		—		—		380,418		371,910
Residential mortgage-backed		18,190		2,969		93		1,333		6,866		—		29,451		29,013
Asset-backed		136,429		17,680		75,065		6,540		—		—		235,714		237,333
Commercial mortgage-backed		136,359		26,238		25,572		—		—		—		188,169		184,984
Corporate bonds		12,026		49,858		413,967		251,045		44,208		—		771,104		762,777
Total	$	344,074	$	823,382	$	660,120	$	277,031	$	51,074	$	30	$	2,155,711	$	2,111,284

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The following table sets forth our U.S. Treasury bonds, agency bonds and foreign government bonds, as well as our state, municipality and political subdivision bond holdings by sector:

	As of  March 31, 2016
amounts in thousands	Fair Value		Amortized Cost
U.S. Treasury bonds, agency bonds and foreign government bonds:
U.S. Treasury bonds	$	137,743	$	135,204
Agency bonds		88,502		86,817
Foreign government bonds		95,764		99,532
Total U.S. Treasury bonds, agency bonds and foreign government bonds	$	322,009	$	321,553
States, municipalities and political subdivisions:
General obligation	$	151,858	$	145,448
Prerefunded		27,134		26,206
Revenue		286,914		270,576
Taxable		84,949		83,037
Total States, municipalities and political subdivisions	$	550,855	$	525,267

We own $58.3 million of municipal securities, which are credit enhanced by various financial guarantors. As of March 31, 2016, the average underlying credit rating for these securities is AA-.  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.

The following table sets forth our agency mortgage-backed securities (“AMBS”) and residential mortgage-backed securities (“RMBS”) issued by the Government National Mortgage Association (“GNMA”), Federal National Mortgage Association (“FNMA”) and Federal Home Loan Mortgage Corporation (“FHLMC”) and the quality category (prime, Alternative A-paper (“Alt-A”) and subprime) for all other such investments as of March 31, 2016:

	As of  March 31, 2016
amounts in thousands	Fair Value		Amortized Cost
AMBS:
GNMA	$	66,267	$	64,227
FNMA		208,764		204,167
FHLMC		105,387		103,516
Total agency mortgage-backed securities	$	380,418	$	371,910
RMBS:
Prime	$	9,969	$	9,713
Alt-A and subprime		1,292		1,280
Non-U.S. RMBS		18,190		18,020
Total residential mortgage-backed securities	$	29,451	$	29,013

We analyze our mortgage-backed securities by credit quality of the underlying collateral distinguishing between the securities issued by FNMA, FHLMC and GNMA, which are federal government sponsored entities, and non-FNMA and non-FHLMC securities broken out by prime, Alt-A and subprime collateral.  The securities issued by FNMA and FHLMC are the obligations of each respective entity.  The U.S. Department of the Treasury has agreed to provide support to FNMA and FHLMC under a Preferred Stock Purchase Agreement by committing to make quarterly payments to these enterprises, if needed, to maintain a zero net worth.

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 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.

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Details of the collateral of our asset-backed securities portfolio as of March 31, 2016 are presented below:

	As of  March 31, 2016
amounts in thousands	Fair Value		Amortized Cost
Auto loans	$	33,530	$	33,439
Consumer Loans		25,569		25,689
Credit cards		48,765		48,555
Collateralized loan obligations		75,308		76,751
Time share		25,528		25,705
Miscellaneous		27,014		27,194
Total	$	235,714	$	237,333

We hold non-sovereign securities where the issuer is located in the Euro Area, an economic and monetary union of certain member states within the European Union that have adopted the Euro as their common currency. As of March 31, 2016, the fair value of such securities was $75.7 million, with an amortized cost of $74.7 million, representing 2.7% of our total Fixed maturities and equity portfolio.  Our largest exposure is in France and the Netherlands with a total of $29.2 million each.  We have no direct exposure to Greece, Portugal, Italy or Spain within the Euro Area, as of March 31, 2016. Our Company holds fixed maturities issued by the Commonwealth of Puerto Rico which are fully backed by the U.S. government.

The following table summarizes the gross unrealized investment losses as of March 31, 2016 by length of time where the fair value was less than 80% of amortized cost:

	As of  March 31, 2016
	Fixed		Equity
amounts in thousands	Maturities		Securities		Total
Less than twelve months	$	2,007	$	450	$	2,457
Longer than twelve months		1,812		—		1,812
Total	$	3,819	$	450	$	4,269

The longer than twelve months unrealized loss of $1.8 million is due to unfavorable foreign exchange movement in our Canadian portfolio.

Our Company did not have any credit related OTTI losses during the three months ended March 31, 2015.  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 Fixed maturities in unrealized loss positions that are not other-than-temporarily impaired before recovery. For structured securities, 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 Equity securities, we also consider our 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. 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 investments for impairment losses could result in a significant change in impairment losses reported in the Consolidated Financial Statements.

Critical Accounting Estimates

Our Company’s Annual Report on Form 10-K for the year ended December 31, 2015 discloses our critical accounting estimates (refer to Item 7 – Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Estimates).

We believe the items that require the most subjective and complex estimates involve the reporting of:

· Reserves for losses and LAE (including losses that have occurred but were not reported to us by the financial reporting date);

· Reinsurance recoverables, including a provision for uncollectible reinsurance;

· Written and unearned premiums;

· The recoverability of deferred tax assets;

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· The impairment of investment securities; and

· Valuation of invested assets.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

The following updates our disclosure regarding foreign currency exchange rate risk as previously stated in our Company’s 2015 Annual Report on Form 10-K.

Foreign Currency Exchange Rate Risk

We are exposed to foreign currency exchange rate risk primarily related to foreign-denominated Cash, Cash equivalents and Marketable securities, Premiums receivable, Reinsurance recoverables on paid and unpaid losses and LAE as well as Reserves for losses and LAE. The principal currencies creating foreign currency exchange risk for our operations are the British pound, the Euro and the Canadian dollar.  We manage our foreign currency exchange rate risk primarily through asset-liability matching.

There have been no material changes in foreign exchange rate risk from year-end.

Item 4. Controls and Procedures

(a) Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, 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, our Chief Executive Officer and Chief Financial Officer have concluded that as of the end of such period our 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, our Company’s internal control over financial reporting.

(c) In designing and evaluating the disclosure controls and procedures and internal control over financial reporting, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures and internal control over financial reporting must reflect the fact that management is required to apply judgment in evaluating the benefits of possible controls and procedures relative to their costs.

35

PART II - OTHER INFORMATION

Item 1. Legal Proceedings

In the ordinary course of conducting business, our Company’s subsidiaries are involved in various legal proceedings, either indirectly as insurers for parties to the proceedings or directly as defendants.  Most of these proceedings consist of claims litigation involving our 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.  Our Company accounts for such activity through the establishment of unpaid losses and LAE reserves.  Our 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 our Company’s Consolidated Balance Sheets, Consolidated Statements of Income or Consolidated Statements of Cash Flows.

Our 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, our Company believes it has valid defenses to these cases. Our Company’s management expects that the ultimate liability, if any, with respect to future extra-contractual matters will not be material to our Consolidated Balance Sheets, Consolidated Statements of Income or Consolidated Statements of Cash Flows.  Nonetheless, given the large or indeterminate amounts sought in certain of these matters, and the inherent unpredictability of litigation, an adverse outcome in such matters could, from time to time, have a material adverse outcome on our Company’s Consolidated Statements of Income or Consolidated Statements of Cash Flows 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 our Company’s 2015 Annual Report on Form 10-K.

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

None

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable

Item 5. Other Information

None

36

Item 6. Exhibits

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

* Included herein

37

Signatures

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

	The Navigators Group, Inc.
	(Company)
Dated:  May 6, 2016	By:	/s/ Ciro M. DeFalco
		Ciro M. DeFalco
		Senior Vice President and Chief Financial Officer

38

Index to Exhibits

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

* Included herein

39

EX-11.1

Exhibit 11-1

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

Computation of Per Share Earnings

The following table presents the computation of basic and diluted earnings per share for the three months ended March 31, 2016 and 2015:

	Three Months Ended March 31,
amounts in thousands, except share and per share amounts	2016		2015
Net income	$	22,932	$	25,929
Basic weighted average shares		14,492,214		14,327,606
Effect of common stock equivalents:
Assumed exercise of stock options and vesting of stock grants		399,432		310,231
Diluted weighted average shares		14,891,646		14,637,837
Net income per common share:
Basic	$	1.58	$	1.81
Diluted	$	1.54	$	1.77

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: May 6, 2016	/s/ Stanley A. Galanski
	Name:	Stanley A. Galanski
	Title:	President and Chief Executive Officer
		(Principal Executive Officer)

EX-31.2

Exhibit 31-2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PER

SECTION 302 OF THE SARBANES-OXLEY ACT

I, Ciro M. DeFalco, certify that:

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

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

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

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

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

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

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

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

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

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

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

Date: May 6, 2016	/s/ Ciro M. DeFalco
	Name:	Ciro M. DeFalco
	Title:	Senior Vice President and Chief Financial Officer
		(Principal Financial Officer)

EX-32.1

Exhibit 32-1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of The Navigators Group, Inc. (the “Company”) on Form 10-Q for the period ending March 31, 2016 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

May 6, 2016

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 March 31, 2016 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Ciro M. DeFalco, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

/s/ Ciro M. DeFalco

Ciro M. DeFalco

Senior Vice President and Chief Financial Officer

May 6, 2016

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

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 29, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Trading Symbol	NAVG
Entity Registrant Name	NAVIGATORS GROUP INC
Entity Central Index Key	0000793547
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		14,533,395

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Investments:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2016: $2,432,837; 2015: $2,400,245)	$ 2,477,720	$ 2,414,210
Equity securities, available-for-sale, at fair value (cost: 2016: $286,811; 2015: $281,943)	314,815	305,271
Short-term investments, at fair value (amortized cost: 2016: $211,782; 2015: $217,743)	211,782	217,745
Total investments	3,004,317	2,937,226
Cash	72,618	69,901
Premiums receivable	348,916	276,616
Prepaid reinsurance premiums	220,696	232,588
Reinsurance recoverable on paid losses	55,752	49,506
Reinsurance recoverable on unpaid losses and loss adjustment expenses	793,632	809,518
Deferred policy acquisition costs	105,359	91,983
Accrued investment income	16,451	16,001
Goodwill and other intangible assets	6,746	6,807
Current income tax receivable, net	13,032	22,323
Deferred income tax, net		3,900
Other assets	59,114	67,643
Total assets	4,696,633	4,584,012
Liabilities:
Reserves for losses and loss adjustment expenses	2,211,848	2,202,644
Unearned premiums	864,247	820,676
Reinsurance balances payable	123,165	107,411
Senior notes	263,616	263,580
Deferred income tax, net	8,280
Accounts payable and other liabilities	81,598	93,553
Total liabilities	$ 3,552,754	$ 3,487,864
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 18,042,474 shares for 2016 and 17,942,269 shares for 2015	$ 1,803	$ 1,793
Additional paid-in capital	359,829	357,829
Treasury stock, at cost (3,511,380 shares for 2016 and 2015)	(155,801)	(155,801)
Retained earnings	891,655	868,723
Accumulated other comprehensive income	46,393	23,604
Total stockholders' equity	1,143,879	1,096,148
Total liabilities and stockholders' equity	$ 4,696,633	$ 4,584,012

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Fixed maturities, available-for-sale, amortized cost	$ 2,432,837	$ 2,400,245
Equity securities, available-for-sale, cost	286,811	281,943
Short-term investments, amortized cost	$ 211,782	$ 217,743
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	18,042,474	17,942,269
Treasury stock, shares	3,511,380	3,511,380

XML

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Gross written premiums	$ 413,877	$ 396,460
Revenues:
Net written premiums	319,820	288,958
Change in unearned premiums	(55,462)	(52,826)
Net earned premiums	264,358	236,132
Net investment income	19,594	16,253
Total other-than-temporary impairment losses	(109)	23
Portion of loss recognized in other comprehensive income (before tax)	109	(23)
Net other-than-temporary impairment losses recognized in earnings	0	0
Net realized gains (losses)	1,597	5,596
Other income (expenses)	2,549	2,242
Total revenues	288,098	260,223
Expenses:
Net losses and loss adjustment expenses	152,956	130,198
Commission expenses	37,554	32,905
Other operating expenses	60,809	54,909
Interest expense	3,858	3,855
Total expenses	255,177	221,867
Income before income taxes	32,921	38,356
Income tax expense (benefit)	9,989	12,427
Net income	$ 22,932	$ 25,929
Net income per common share:
Basic	$ 1.58	$ 1.81
Diluted	$ 1.54	$ 1.77
Average common shares outstanding:
Basic	14,492,214	14,327,606
Diluted	14,891,646	14,637,837

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 22,932	$ 25,929
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net of deferred tax of $(11,737) and $(1,723) in 2016 and 2015, respectively	21,798	3,201
Reclassification adjustment for net realized (gains) losses included in net income net of deferred tax of $(758) and $698 in 2016 and 2015, respectively	1,408	(1,297)
Change in net unrealized gains (losses) on investments	23,206	1,904
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period, net of deferred tax of $38 and $(8) in 2016 and 2015, respectively	(71)	15
Change in other-than-temporary impairments	(71)	15
Change in foreign currency translation gains (losses), net of deferred tax of $183 and $429 in 2016 and 2015, respectively	(346)	(796)
Other comprehensive income (loss)	22,789	1,123
Comprehensive income (loss)	$ 45,721	$ 27,052

XML

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Unrealized gains (losses) on investments arising during the period, deferred tax	$ (11,737)	$ (1,723)
Reclassification adjustment for net realized (gains) losses included in net income, deferred tax	(758)	698
Non credit other-than-temporary impairments arising during the period, deferred tax	38	(8)
Reclassification adjustment for non credit other-than-temporary impairment losses recognized in net income, deferred tax	0	0
Change in foreign currency translation gains (losses), deferred tax	$ 183	$ 429

XML

Consolidated Statement of Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2015	$ 1,096,148	$ 1,793	$ 357,829	$ (155,801)	$ 868,723	$ 23,604
Beginning balance (in shares) at Dec. 31, 2015	17,942,269	17,942,269		3,511,380
Net income	$ 22,932				22,932
Changes in comprehensive income:
Change in net unrealized gain (loss) on investments	23,206					23,206
Change in net non-credit other-than-temporary impairment losses	(71)					(71)
Change in foreign currency translation gain (loss)	(346)					(346)
Other comprehensive income (loss)	22,789					22,789
Shares issued under stock plan	(2,916)	$ 10	(2,926)
Shares issued under stock plan (in shares)		100,205
Share-based compensation	4,926		4,926
Ending balance at Mar. 31, 2016	$ 1,143,879	$ 1,803	$ 359,829	$ (155,801)	$ 891,655	$ 46,393
Ending balance (in shares) at Mar. 31, 2016	18,042,474	18,042,474		3,511,380

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities:
Net income	$ 22,932	$ 25,929
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation & amortization	1,459	1,051
Deferred income taxes	191	865
Net realized (gains) losses	(1,597)	(5,596)
Net other-than-temporary impairments recognized in earnings	0	0
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	9,640	18,056
Reserves for losses and loss adjustment expenses	9,204	(17,930)
Prepaid reinsurance premiums	11,891	(6,374)
Unearned premiums	43,571	60,393
Premiums receivable	(72,300)	(53,878)
Deferred policy acquisition costs	(13,376)	(6,769)
Accrued investment income	(450)	106
Reinsurance balances payable	15,753	1,445
Current income tax payable, net	9,291	9,388
Accounts payable	(10,830)	(31,229)
Other	13,169	(372)
Net cash provided by (used in) operating activities	38,548	(4,915)
Fixed maturities
Redemptions and maturities	44,996	37,241
Sales	98,680	119,505
Purchases	(177,719)	(130,196)
Equity securities
Sales	10,724	38,343
Purchases	(15,601)	(12,320)
Change in payable for securities	(1,472)	15,565
Net change in short-term investments	6,146	(63,168)
Purchase of property and equipment	(2,452)	(790)
Net cash provided by (used in) investing activities	(36,698)	4,180
Financing activities:
Proceeds of stock issued from employee stock purchase plan	867
Net cash provided by (used in) financing activities	867
Change in cash	2,717	(735)
Cash at beginning of year	69,901	90,751
Cash at end of period	72,618	90,016
Supplemental cash information:
Income taxes paid, net	40	1,793
Issuance of stock to directors	$ 633	$ 563

XML

Organization and Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Organization and Summary of Significant Accounting Policies

NOTE 1.  ORGANIZATION & SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Unless the context requires otherwise, the terms “we,” “us,”  “our,” or “our Company” are used to mean The Navigators Group, Inc., a Delaware holding company established in 1982, and its subsidiaries.  The terms “Parent” or “Parent Company” are used to mean The Navigators Group, Inc. without its subsidiaries.

Organization

We are an international insurance company with a long-standing area of specialization in Marine insurance.  We also offer Property and Casualty (“P&C”) insurance business, primarily general liability coverage and umbrella & excess liability coverage to commercial enterprises through our Primary and Excess Casualty divisions.  We have also developed niches in Professional Liability insurance, through our Directors & Officers (“D&O”) and Errors & Omissions (“E&O”) divisions.  Beginning in 2010, we added reinsurance products through our Global Reinsurance (“GlobalRe”) business.

We operate through various wholly-owned subsidiaries, including Navigators Insurance Company (“NIC”), inclusive of its United Kingdom Branch (“U.K. Branch”), and Navigators Specialty Insurance Company (“NSIC”), both of which are U.S. insurance companies, and Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s of London (“Lloyd’s”) underwriting agency that manages Lloyd’s Syndicate 1221 (the “Syndicate”) in the U.K. and is the primary underwriting company of Navigators Holdings (U.K.) Ltd. (“NHUK”), the holding company for our non U.S. domiciled entities. Our Company controls 100% of the Syndicate’s stamp capacity.

Basis of Presentation

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 significant intercompany transactions and balances have been eliminated in consolidation.  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 Interim Consolidated Financial Statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015.  

Income Taxes

The income tax provision has been computed based on our estimated annual effective tax rate.  Our effective tax rate for the quarter differs from the federal tax rate of 35% principally because of tax-exempt investment income and dividends received deduction.

Current and Pending Accounting Pronouncements

As of January 1, 2016, we adopted the following accounting pronouncements, which did not have a material effect, singly or in the aggregate, on our consolidated financial condition, results of operations or cash flows:

· Accounting Standards Update 2015-03 – Interest – Imputation of Interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs, which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to simplify presentation of debt issuance costs.

· Accounting Standards Update 2015-05 – Intangibles – Goodwill and Other – Internal Use Software (Subtopic 350-40) Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to provide guidance to customers about whether a cloud computing arrangement includes a software license.

· Accounting Standards Update 2015-07 – Fair Value Measurement – (Topic 820) Disclosures for Investments in Certain Entities that Calculate Net Asset Value per Share (or its equivalent) (a consensus of the Emerging Issues Task Force), which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to ensure that all investments categorized in the fair value hierarchy are classified using a consistent approach.

In 2016, the Financial Accounting Standards Board issued the following new pronouncements that may have an impact on our Company and we are assessing the future impact of these updates to our Consolidated Financial Statements:

· Accounting Standards Update 2016-01 – Financial Instruments (Subtopic 825-10) – Recognition and Measurement of Financial Assets and Financial Liabilities, which will be effective for fiscal years beginning after December 15, 2017.  The new pronouncement was issued to make targeted improvements to the presentation of financial instruments.

· Accounting Standards Update 2016-02 – Leases (Topic 842) - Amends the recognition of a right-to-use asset and lease liability on the statement of financial position of those leases previously classified as operating leases under the previous guidance, which will be effective for fiscal years beginning after December 15, 2015.  The new pronouncement was issued to improve transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements.

· Accounting Standards Update 2016-09 – Compensation – Stock Compensation – (Topic 718) Improvements to Employee Share-Based Accounting, which will be effective for fiscal years beginning after December 15, 2016.  The new pronouncement was issued to simplify employee share-based accounting.

There were no additional 2016 accounting pronouncements that are expected to have an impact on the Consolidated Financial Statements upon adoption.

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Segment Information

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Segment Information

NOTE 2.  SEGMENT INFORMATION

We report our results of operations consistent with the manner in which our Chief Operating Decision Maker reviews the business to assess performance through our reportable segments: U.S. Insurance, International Insurance (“Int’l Insurance”), Global Reinsurance (“GlobalRe”) and Corporate. 

We classify our business into three underwriting segments: U.S. Insurance, Int’l Insurance and GlobalRe.  Both the U.S. Insurance and Int’l Insurance reporting segments are each comprised of three operating segments: Marine, P&C and Professional Liability.

We evaluate the performance of each of the underwriting segments based on underwriting results.  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 loss adjustment expenses (“LAE”), Commission expenses, Other operating expenses and Other underwriting income (expense).  The Combined ratio is derived by dividing the sum of Net losses and LAE, Commission expenses, Other operating expenses and Other underwriting income (expense) by Net earned premiums.  A Combined ratio of less than 100% indicates an underwriting profit and greater than 100% indicates an underwriting loss.  Our underwriting performance is evaluated separately from the rest of our operations.  The performance of our investment portfolios, our liquidity and capital resource needs, our foreign currency exposure and our tax planning strategies are evaluated on a consolidated basis within our Corporate segment.

The accounting policies used to prepare the segment reporting data for our reportable segments are the same as those described in Note 1 and Note 2 of our Annual Report on Form 10-K for the year ended December 31, 2015.  

Financial data by segment for the three months ended March 31, 2016 and 2015 was as follows:

	Three Months Ended March 31, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	148,340		$	78,008		$	38,010		$	—		$	264,358
Net losses and LAE		(91,512	)		(40,410	)		(21,034	)		—			(152,956	)
Commission expenses		(14,855	)		(15,355	)		(7,745	)		401			(37,554	)
Other operating expenses		(33,761	)		(21,771	)		(5,277	)		—			(60,809	)
Other underwriting income (expense)		361			—			49			(401	)		9
Underwriting profit (loss)	$	8,573		$	472		$	4,003		$	—		$	13,048
Net investment income											19,594			19,594
Net realized gains (losses)											1,597			1,597
Interest expense											(3,858	)		(3,858	)
Other income (loss)											2,540			2,540
Income before income taxes	$	8,573		$	472		$	4,003		$	19,873		$	32,921
Income tax (expense) benefit											(9,989	)		(9,989	)
Net income (loss)													$	22,932
Losses and LAE ratio		61.7	%		51.8	%		55.3	%					57.9	%
Commission expense ratio		10.0	%		19.7	%		20.4	%					14.2	%
Other operating expense ratio (2)		22.5	%		27.9	%		13.8	%					23.0	%
Combined ratio		94.2	%		99.4	%		89.5	%					95.1	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

	Three Months Ended March 31, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	131,091		$	65,525		$	39,516		$	—		$	236,132
Net losses and LAE		(77,799	)		(29,691	)		(22,708	)		—			(130,198	)
Commission expenses		(14,345	)		(11,413	)		(7,298	)		151			(32,905	)
Other operating expenses		(33,688	)		(17,009	)		(4,212	)		—			(54,909	)
Other underwriting income (expense)		196			—			10			(151	)		55
Underwriting profit (loss)	$	5,455		$	7,412		$	5,308		$	—		$	18,175
Net investment income											16,253			16,253
Net realized gains (losses)											5,596			5,596
Interest expense											(3,855	)		(3,855	)
Other income (loss)											2,187			2,187
Income before income taxes	$	5,455		$	7,412		$	5,308		$	20,181		$	38,356
Income tax (expense) benefit											(12,427	)		(12,427	)
Net income (loss)													$	25,929
Losses and LAE ratio		59.3	%		45.3	%		57.5	%					55.1	%
Commission expense ratio		10.9	%		17.4	%		18.5	%					13.9	%
Other operating expense ratio (2)		25.6	%		26.0	%		10.6	%					23.3	%
Combined ratio		95.8	%		88.7	%		86.6	%					92.3	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

Revenue by operating segment for the three months ended March 31, 2016 and 2015 was as follows:

	Three Months Ended March 31, 2016									Three Months Ended March 31, 2015									% Change
amounts in thousands	Gross written premiums		Ceded written premiums			Netwritten premiums		Net earned premiums		Gross written premiums		Ceded written premiums			Net written premiums		Net earned premiums		Gross written premiums			Ceded written premiums			Net written premiums			Net earned premiums
U.S. Insurance
Marine	$	43,163	$	(17,647	)	$	25,516	$	23,250	$	40,835	$	(16,286	)	$	24,549	$	23,924		5.7	%		8.4	%		3.9	%		(2.8	%)
P&C		141,278		(30,507	)		110,771		109,159		134,146		(39,558	)		94,588		90,735		5.3	%		(22.9	%)		17.1	%		20.3	%
Professional Liability		26,206		(6,343	)		19,863		15,931		24,346		(12,886	)		11,460		16,432		7.6	%		(50.8	%)		73.3	%		(3.0	%)
Total	$	210,647	$	(54,497	)	$	156,150	$	148,340	$	199,327	$	(68,730	)	$	130,597	$	131,091		5.7	%		(20.7	%)		19.6	%		13.2	%
Int'l Insurance
Marine	$	71,948	$	(11,089	)	$	60,859	$	38,856	$	67,410	$	(10,822	)	$	56,588	$	37,792		6.7	%		2.5	%		7.5	%		2.8	%
P&C		44,046		(17,229	)		26,817		21,209		32,950		(16,129	)		16,821		16,034		33.7	%		6.8	%		59.4	%		32.3	%
Professional Liability		28,149		(6,653	)		21,496		17,943		22,067		(7,305	)		14,762		11,699		27.6	%		(8.9	%)		45.6	%		53.4	%
Total	$	144,143	$	(34,971	)	$	109,172	$	78,008	$	122,427	$	(34,256	)	$	88,171	$	65,525		17.7	%		2.1	%		23.8	%		19.1	%
GlobalRe	$	59,087	$	(4,589	)	$	54,498	$	38,010	$	74,706	$	(4,516	)	$	70,190	$	39,516		(20.9	%)		1.6	%		(22.4	%)		(3.8	%)
Total	$	413,877	$	(94,057	)	$	319,820	$	264,358	$	396,460	$	(107,502	)	$	288,958	$	236,132		4.4	%		(12.5	%)		10.7	%		12.0	%

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Investments

3 Months Ended

Mar. 31, 2016

Investments Debt And Equity Securities [Abstract]

Investments

NOTE 3.  INVESTMENTS

The following tables set forth our Company’s investments as of March 31, 2016 and December 31, 2015 and include Other-than-temporary-impairment (“OTTI”) securities recognized within Accumulated other comprehensive income (“AOCI”):

	March 31, 2016
			Gross		Gross			Cost or
	Fair		Unrealized		Unrealized			Amortized
amounts in thousands	Value		Gains		(Losses)			Cost
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign    government bonds	$	322,009	$	4,934	$	(4,478	)	$	321,553
States, municipalities and political subdivisions		550,855		26,085		(497	)		525,267
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		380,418		8,831		(323	)		371,910
Residential mortgage obligations		29,451		569		(131	)		29,013
Asset-backed securities		235,714		421		(2,040	)		237,333
Commercial mortgage-backed securities		188,169		4,903		(1,718	)		184,984
Subtotal	$	833,752	$	14,724	$	(4,212	)	$	823,240
Corporate bonds		771,104		15,457		(7,130	)		762,777
Total fixed maturities	$	2,477,720	$	61,200	$	(16,317	)	$	2,432,837
Equity securities		314,815		29,650		(1,646	)		286,811
Short-term investments		211,782		—		—			211,782
Total investments	$	3,004,317	$	90,850	$	(17,963	)	$	2,931,430

	December 31, 2015
			Gross		Gross			Cost or
	Fair		Unrealized		Unrealized			Amortized
amounts in thousands	Value		Gains		(Losses)			Cost
Fixed maturities:
U.S. Treasury bonds, agency bonds and  foreign    government bonds	$	252,882	$	2,273	$	(9,214	)	$	259,823
States, municipalities and political subdivisions		576,859		21,233		(781	)		556,407
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		379,269		5,573		(2,082	)		375,778
Residential mortgage obligations		30,465		694		(82	)		29,853
Asset-backed securities		225,012		85		(1,624	)		226,551
Commercial mortgage-backed securities		189,713		3,119		(1,864	)		188,458
Subtotal	$	824,459	$	9,471	$	(5,652	)	$	820,640
Corporate bonds		760,010		7,373		(10,738	)		763,375
Total fixed maturities	$	2,414,210	$	40,350	$	(26,385	)	$	2,400,245
Equity securities		305,271		26,341		(3,013	)		281,943
Short-term investments		217,745		2		—			217,743
Total investments	$	2,937,226	$	66,693	$	(29,398	)	$	2,899,931

As of March 31, 2016 and December 31, 2015, our Company did not have a concentration of greater than 5% of invested assets in a single non-U.S. government-backed issuer.

As of March 31, 2016 and December 31, 2015, Fixed maturities for which non-credit OTTI was previously recognized and included in AOCI are now in an unrealized gains position of $0.4 million and $0.5 million, respectively.

The fair value of our 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. Our Company does not have the intent to sell nor is it more likely than not that it will have to sell Fixed maturities in unrealized loss positions that are not other-than-temporarily impaired before recovery. For structured securities, default probability and severity assumptions differ based on property type, vintage and the stress of the collateral. Our Company does not intend to sell, and it is more likely than not that our Company will not be required to sell, these securities before the recovery of the amortized cost basis. For Equity securities, our Company also considers our 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. Our Company 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 our Company considers when evaluating investments for impairment losses could result in a significant change in impairment losses reported in the Consolidated Financial Statements.

The contractual maturity dates for Fixed maturities categorized by the number of years until maturity as of March 31, 2016 are shown in the following table:

	March 31, 2016
	Fair		Amortized
amounts in thousands	Value		Cost
Due in one year or less	$	128,718	$	130,610
Due after one year through five years		805,858		795,317
Due after five years through ten years		301,025		292,205
Due after ten years		408,367		391,465
Mortgage-backed and asset-backed securities		833,752		823,240
Total	$	2,477,720	$	2,432,837

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. Prepayment assumptions associated with the mortgage-backed and asset-backed securities are reviewed on a periodic basis. When changes in prepayment assumptions are deemed necessary as the result of actual prepayments differing from anticipated prepayments, securities are revalued based upon the new prepayment assumptions utilizing the retrospective accounting method. Due to the periodic repayment of principal, the mortgage-backed and asset-backed securities are estimated to have an effective maturity of approximately 4.1 years.

The following tables summarize all securities in a gross unrealized loss position as of March 31, 2016 and December 31, 2015, showing the aggregate fair value and gross unrealized loss by the length of time those securities have continuously been in a gross unrealized loss position:

	March 31, 2016
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
amounts in thousands	Value		(Losses)			Value		(Losses)			Value		(Losses)
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign    government bonds	$	29,155	$	(771	)	$	19,451	$	(3,707	)	$	48,606	$	(4,478	)
States, municipalities and political subdivisions		18,911		(266	)		6,387		(231	)		25,298		(497	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		4,082		(4	)		23,634		(319	)		27,716		(323	)
Residential mortgage obligations		4,562		(32	)		1,793		(99	)		6,355		(131	)
Asset-backed securities		91,678		(790	)		70,768		(1,250	)		162,446		(2,040	)
Commercial mortgage-backed securities		49,889		(1,690	)		3,362		(28	)		53,251		(1,718	)
Subtotal	$	150,211	$	(2,516	)	$	99,557	$	(1,696	)	$	249,768	$	(4,212	)
Corporate bonds		156,107		(6,590	)		21,949		(540	)		178,056		(7,130	)
Total fixed maturities	$	354,384	$	(10,143	)	$	147,344	$	(6,174	)	$	501,728	$	(16,317	)
Equity securities		37,422		(1,646	)		—		—			37,422		(1,646	)
Total fixed maturities and equity securities	$	391,806	$	(11,789	)	$	147,344	$	(6,174	)	$	539,150	$	(17,963	)

	December 31, 2015
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
amounts in thousands	Value		(Losses)			Value		(Losses)			Value		(Losses)
Fixed maturities:
U.S. Treasury bonds, agency bonds and    foreign government bonds	$	142,233	$	(3,032	)	$	22,230	$	(6,182	)	$	164,463	$	(9,214	)
States, municipalities and political subdivisions		50,577		(549	)		4,808		(232	)		55,385		(781	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		164,817		(1,315	)		29,862		(767	)		194,679		(2,082	)
Residential mortgage obligations		3,910		(5	)		1,684		(77	)		5,594		(82	)
Asset-backed securities		112,479		(663	)		81,477		(961	)		193,956		(1,624	)
Commercial mortgage-backed securities		83,024		(1,826	)		3,065		(38	)		86,089		(1,864	)
Subtotal	$	364,230	$	(3,809	)	$	116,088	$	(1,843	)	$	480,318	$	(5,652	)
Corporate bonds		395,399		(10,114	)		13,849		(624	)		409,248		(10,738	)
Total fixed maturities	$	952,439	$	(17,504	)	$	156,975	$	(8,881	)	$	1,109,414	$	(26,385	)
Equity securities		58,531		(3,013	)		—		—			58,531		(3,013	)
Total fixed maturities and equity securities	$	1,010,970	$	(20,517	)	$	156,975	$	(8,881	)	$	1,167,945	$	(29,398	)

As of March 31, 2016, there were 204 Fixed maturities and 36 Equity securities in an unrealized loss position. As of December 31, 2015, there were 368 Fixed maturities and 57 Equity securities in an unrealized loss position. As of March 31, 2016 and December 31, 2015, the gross unrealized loss for the greater than 12 months category consists primarily of agency and foreign government bonds principally due to an unfavorable foreign exchange movement. The gross unrealized loss for the less than 12 months category for periods ending March 31, 2016 and December 31, 2015 consists primarily of corporate bonds in the energy sector which have been impacted by the recent decline in oil prices.  

As of March 31, 2016 and December 31, 2015, the largest unrealized loss by a non-government backed issuer in the investment portfolio was $2.3 million and $2.6 million, respectively.

Our Company analyzes impaired securities quarterly to determine if any are other-than-temporarily impaired. The above securities with unrealized losses have been determined to be temporarily impaired based on our evaluation.       

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

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

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

For Equity securities, in general, our Company reviews 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, our Company will review significant declines in fair value regardless of the time period involved.  Factors considered in evaluating potential impairment include, but are not limited to, the current fair value as compared to cost of the security, the length of time the investment has been below cost and by how much the investment is below cost.  If an Equity security is deemed to be other-than-temporarily impaired, the cost is written down to fair value with the loss recognized in earnings.

Our Company’s ability to hold securities is supported by sufficient cash flow from our operations and from maturities within our investment portfolio in order to meet our claims payments and other disbursement obligations arising from our 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.

Our Company did not have any credit related OTTI lossesduring the three months ended March 31, 2016 and 2015.

As of March 31, 2016 and 2015, the cumulative amounts related to our Company’s credit loss portion of the OTTI losses on Fixed maturities were $2.4 million. Our Company does not intend to sell, and it is more likely than not that it will not be required to sell, the securities prior to recovery of the amortized cost basis and for which the non-credit loss portion is included in AOCI.

Our Company’s Net investment income was derived from the following sources:

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities	$	16,737		$	15,047
Equity securities		3,447			1,968
Short-term investments		210			183
Total investment income	$	20,394		$	17,198
Investment expenses		(800	)		(945	)
Net investment income	$	19,594		$	16,253

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

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities:
Gains	$	2,548		$	1,174
Losses		(1,127	)		(572	)
Fixed maturities, net	$	1,421		$	602
Short-term:
Gains	$	268		$	8
Losses		(83	)		(162	)
Short-term, net	$	185		$	(154	)
Equity securities:
Gains	$	609		$	6,325
Losses		(618	)		(1,177	)
Equity securities, net	$	(9	)	$	5,148
Net realized gains (losses)	$	1,597		$	5,596

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Fair Value Measurement

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurement

NOTE 4.  FAIR VALUE MEASUREMENT

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

Level 1 – Quoted prices for identical instruments in active markets.  Examples are listed equity and fixed income securities traded on an exchange.  U.S. Treasury securities are reported as Level 1 and are valued based on unadjusted quoted prices for identical assets in active markets that our Company can access.

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

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 following tables present, for each of the fair value hierarchy levels as defined by the accounting guidance for fair value measurements and described below, our Company’s Fixed maturities and Equity securities by asset class that are measured at fair value on a recurring basis, as well as the fair value of the 5.75% Senior notes due October 15, 2023 (the “Senior notes”) carried at amortized cost as of March 31, 2016 and December 31, 2015:

	March 31, 2016
amounts in thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S.  Treasury bonds, agency bonds and    foreign government bonds	$	137,743	$	184,266	$	—	$	322,009
States, municipalities and political subdivisions		—		550,855		—		550,855
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		380,418		—		380,418
Residential mortgage obligations		—		29,451		—		29,451
Asset-backed securities		—		235,714		—		235,714
Commercial mortgage-backed securities		—		188,169		—		188,169
Subtotal	$	—	$	833,752	$	—	$	833,752
Corporate bonds		—		771,104		—		771,104
Total fixed maturities	$	137,743	$	2,339,977	$	—	$	2,477,720
Equity securities		136,883		177,932		—		314,815
Short-term investments		211,782		—		—		211,782
Total assets measured at fair value	$	486,408	$	2,517,909	$	—	$	3,004,317
Senior notes		—		290,656		—		290,656
Total liabilities measured at fair value	$	—	$	290,656	$	—	$	290,656

	December 31, 2015
amounts in thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds and    foreign government bonds	$	67,394	$	185,488	$	—	$	252,882
States, municipalities and political subdivisions		—		576,859		—		576,859
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		379,269		—		379,269
Residential mortgage obligations		—		30,465		—		30,465
Asset-backed securities		—		225,012		—		225,012
Commercial mortgage-backed securities		—		189,713		—		189,713
Subtotal	$	—	$	824,459	$	—	$	824,459
Corporate bonds		—		760,010		—		760,010
Total fixed maturities	$	67,394	$	2,346,816	$	—	$	2,414,210
Equity securities		126,455		178,816		—		305,271
Short-term investments		217,745		—		—		217,745
Total assets measured at fair value	$	411,594	$	2,525,632	$	—	$	2,937,226
Senior notes	$	—	$	282,486	$	—	$	282,486
Total liabilities measured at fair value	$	—	$	282,486	$	—	$	282,486

All other financial assets and liabilities including Cash, Premium receivable, Reinsurance recoverable and Reinsurance balances payable are carried at cost, which approximates fair value.

Our Company did not have any significant transfers between Level 1 and Level 2 classifications for the three months ended March 31, 2016 and 2015.

As of March 31, 2016 and 2015, our Company did not have any Level 3 assets.  

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Ceded Reinsurance

3 Months Ended

Mar. 31, 2016

Insurance [Abstract]

Ceded Reinsurance

NOTE 5. CEDED REINSURANCE

As of March 31, 2016, the credit quality distribution of our Company’s Reinsurance recoverable of $1.1 billion for ceded paid losses, ceded unpaid losses and LAE, and ceded unearned premiums based on insurer financial strength ratings from A.M. Best or S&P was not significantly different from the credit quality distribution as of December 31, 2015.

Our allowance for uncollectible reinsurance was $6.9 million as of March 31, 2016 and December 31, 2015.

As of March 31, 2016, our 10 largest reinsurers measured by the amount of Reinsurance recoverable for ceded losses and LAE and ceded unearned premium, together with the reinsurance recoverable and collateral, were not significantly different from December 31, 2015.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

NOTE 6.  COMMITMENTS AND CONTINGENCIES

In 2013, the State of Connecticut (“the State”) awarded our Company up to $11.5 million ($8.0 million in loans and $3.5 million in grants) to move our corporate headquarters to Stamford, Connecticut.  The loan is non-interest bearing, has a term of 10 years and is subject to forgiveness based on our compliance with certain conditions set forth in the agreement with the State.  The amount of the loan to be received is dependent on our Company reaching certain milestones for creation of new jobs over a five-year period, and the funds are to be used to offset certain equipment purchases, facility costs, training of employees and other eligible project-related costs.  Our Company completed the move to Stamford in September 2013 and received $7.5 million of the award, which is comprised of $6.0 million of the loan and $1.5 million of the grant for reaching the first job milestone.  Under the terms of the agreement with the State, the Company was required to maintain an average of 100 full-time employees in Connecticut over a 12-month period in order for the State to forgive the initial $6.0 million of the loan.  In addition, as soon as our Company achieved a total of 150 full-time employees in Connecticut, we became eligible to receive an additional $1.0 million of the loan and $0.5 million of the grant.  On October 20, 2015, our Company received a letter from the State determining that we had achieved both of these milestones.  As a result, our Company earned a loan forgiveness credit of $6.0 million with the State and received the additional $1.0 million of the loan and $0.5 million of the grant.  Earning of the remaining portions of the grant and forgiveness of any outstanding amounts of the loan is subject to certain conditions, including maintaining a certain number of required jobs for an extended period of time.  The length of time commitment for forgiveness of the additional $1.0 million of the October 20, 2015 loan has not yet been met. However, our Company expects to meet all the conditions for the State to forgive the loan. Accordingly, our Company is recognizing the amount of loan and grants received over the period in which offsetting expenses are recognized. Our Company recognized $0.4 million of the incentive for the three months ended March 31, 2016. As of March 31, 2016 and December 31, 2015, our Company has deferred revenue of $5.9 million and $6.3 million, respectively, which is included in Other liabilities on the Consolidated Balance Sheets.

In the ordinary course of conducting business, our Company’s subsidiaries are involved in various legal proceedings, either indirectly as insurers for parties to the proceedings or directly as defendants.  Most of these proceedings consist of claims litigation involving our 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.  Our Company accounts for such activity through the establishment of unpaid losses and LAE reserves. Our 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 our Company’s Consolidated Balance Sheets, Consolidated Statements of Income or Consolidated Statements of Cash Flows.

Our 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, our Company believes it has valid defenses to these cases. Our Company’s management expects that the ultimate liability, if any, with respect to future extra-contractual matters will not be material to our Consolidated Balance Sheets, Consolidated Statements of Income or Consolidated Statements of Cash Flows.  Nonetheless, given the large or indeterminate amounts sought in certain of these matters, and the inherent unpredictability of litigation, an adverse outcome in such matters could, from time to time, have a material adverse effect on our Company’s Consolidated Statements of Income or Consolidated Statements of Cash Flows in a particular fiscal quarter or year.

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

NOTE 7.  STOCK-BASED COMPENSATION

Stock-based compensation granted under our Company’s stock plans is expensed in tranches over the vesting period. Options and non-performance based grants generally vest equally over a three or four-year period and the options have a maximum term of ten years.  For the three months ended March 31, 2016, we granted 185,473 stock incentive units at a grant price between $80.98 and $86.68.  Each performance unit and restricted stock unit represents a contingent right to receive one share of common stock as of the vesting date.  Such common stock may be subject to forfeiture for the payment of any required tax withholding.

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Organization and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Organization

Organization

We are an international insurance company with a long-standing area of specialization in Marine insurance.  We also offer Property and Casualty (“P&C”) insurance business, primarily general liability coverage and umbrella & excess liability coverage to commercial enterprises through our Primary and Excess Casualty divisions.  We have also developed niches in Professional Liability insurance, through our Directors & Officers (“D&O”) and Errors & Omissions (“E&O”) divisions.  Beginning in 2010, we added reinsurance products through our Global Reinsurance (“GlobalRe”) business.

We operate through various wholly-owned subsidiaries, including Navigators Insurance Company (“NIC”), inclusive of its United Kingdom Branch (“U.K. Branch”), and Navigators Specialty Insurance Company (“NSIC”), both of which are U.S. insurance companies, and Navigators Underwriting Agency Ltd. (“NUAL”), a Lloyd’s of London (“Lloyd’s”) underwriting agency that manages Lloyd’s Syndicate 1221 (the “Syndicate”) in the U.K. and is the primary underwriting company of Navigators Holdings (U.K.) Ltd. (“NHUK”), the holding company for our non U.S. domiciled entities. Our Company controls 100% of the Syndicate’s stamp capacity.

Basis of Presentation

Basis of Presentation

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 significant intercompany transactions and balances have been eliminated in consolidation.  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 Interim Consolidated Financial Statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015.  

Income Taxes

Income Taxes

The income tax provision has been computed based on our estimated annual effective tax rate.  Our effective tax rate for the quarter differs from the federal tax rate of 35% principally because of tax-exempt investment income and dividends received deduction.

Current and Pending Accounting Pronouncements

Current and Pending Accounting Pronouncements

As of January 1, 2016, we adopted the following accounting pronouncements, which did not have a material effect, singly or in the aggregate, on our consolidated financial condition, results of operations or cash flows:

· Accounting Standards Update 2015-03 – Interest – Imputation of Interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs, which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to simplify presentation of debt issuance costs.

· Accounting Standards Update 2015-05 – Intangibles – Goodwill and Other – Internal Use Software (Subtopic 350-40) Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to provide guidance to customers about whether a cloud computing arrangement includes a software license.

· Accounting Standards Update 2015-07 – Fair Value Measurement – (Topic 820) Disclosures for Investments in Certain Entities that Calculate Net Asset Value per Share (or its equivalent) (a consensus of the Emerging Issues Task Force), which will be effective for fiscal years beginning after December 15, 2015. The new pronouncement was issued to ensure that all investments categorized in the fair value hierarchy are classified using a consistent approach.

In 2016, the Financial Accounting Standards Board issued the following new pronouncements that may have an impact on our Company and we are assessing the future impact of these updates to our Consolidated Financial Statements:

· Accounting Standards Update 2016-01 – Financial Instruments (Subtopic 825-10) – Recognition and Measurement of Financial Assets and Financial Liabilities, which will be effective for fiscal years beginning after December 15, 2017.  The new pronouncement was issued to make targeted improvements to the presentation of financial instruments.

· Accounting Standards Update 2016-02 – Leases (Topic 842) - Amends the recognition of a right-to-use asset and lease liability on the statement of financial position of those leases previously classified as operating leases under the previous guidance, which will be effective for fiscal years beginning after December 15, 2015.  The new pronouncement was issued to improve transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements.

· Accounting Standards Update 2016-09 – Compensation – Stock Compensation – (Topic 718) Improvements to Employee Share-Based Accounting, which will be effective for fiscal years beginning after December 15, 2016.  The new pronouncement was issued to simplify employee share-based accounting.

There were no additional 2016 accounting pronouncements that are expected to have an impact on the Consolidated Financial Statements upon adoption.

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Financial Data by Segment

Financial data by segment for the three months ended March 31, 2016 and 2015 was as follows:

	Three Months Ended March 31, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	148,340		$	78,008		$	38,010		$	—		$	264,358
Net losses and LAE		(91,512	)		(40,410	)		(21,034	)		—			(152,956	)
Commission expenses		(14,855	)		(15,355	)		(7,745	)		401			(37,554	)
Other operating expenses		(33,761	)		(21,771	)		(5,277	)		—			(60,809	)
Other underwriting income (expense)		361			—			49			(401	)		9
Underwriting profit (loss)	$	8,573		$	472		$	4,003		$	—		$	13,048
Net investment income											19,594			19,594
Net realized gains (losses)											1,597			1,597
Interest expense											(3,858	)		(3,858	)
Other income (loss)											2,540			2,540
Income before income taxes	$	8,573		$	472		$	4,003		$	19,873		$	32,921
Income tax (expense) benefit											(9,989	)		(9,989	)
Net income (loss)													$	22,932
Losses and LAE ratio		61.7	%		51.8	%		55.3	%					57.9	%
Commission expense ratio		10.0	%		19.7	%		20.4	%					14.2	%
Other operating expense ratio (2)		22.5	%		27.9	%		13.8	%					23.0	%
Combined ratio		94.2	%		99.4	%		89.5	%					95.1	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

	Three Months Ended March 31, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	131,091		$	65,525		$	39,516		$	—		$	236,132
Net losses and LAE		(77,799	)		(29,691	)		(22,708	)		—			(130,198	)
Commission expenses		(14,345	)		(11,413	)		(7,298	)		151			(32,905	)
Other operating expenses		(33,688	)		(17,009	)		(4,212	)		—			(54,909	)
Other underwriting income (expense)		196			—			10			(151	)		55
Underwriting profit (loss)	$	5,455		$	7,412		$	5,308		$	—		$	18,175
Net investment income											16,253			16,253
Net realized gains (losses)											5,596			5,596
Interest expense											(3,855	)		(3,855	)
Other income (loss)											2,187			2,187
Income before income taxes	$	5,455		$	7,412		$	5,308		$	20,181		$	38,356
Income tax (expense) benefit											(12,427	)		(12,427	)
Net income (loss)													$	25,929
Losses and LAE ratio		59.3	%		45.3	%		57.5	%					55.1	%
Commission expense ratio		10.9	%		17.4	%		18.5	%					13.9	%
Other operating expense ratio (2)		25.6	%		26.0	%		10.6	%					23.3	%
Combined ratio		95.8	%		88.7	%		86.6	%					92.3	%

(1) - Includes Corporate segment intercompany eliminations.

(2) - Includes Other operating expenses and Other underwriting income (expense).

Additional Financial Data by Segment

Revenue by operating segment for the three months ended March 31, 2016 and 2015 was as follows:

	Three Months Ended March 31, 2016									Three Months Ended March 31, 2015									% Change
amounts in thousands	Gross written premiums		Ceded written premiums			Netwritten premiums		Net earned premiums		Gross written premiums		Ceded written premiums			Net written premiums		Net earned premiums		Gross written premiums			Ceded written premiums			Net written premiums			Net earned premiums
U.S. Insurance
Marine	$	43,163	$	(17,647	)	$	25,516	$	23,250	$	40,835	$	(16,286	)	$	24,549	$	23,924		5.7	%		8.4	%		3.9	%		(2.8	%)
P&C		141,278		(30,507	)		110,771		109,159		134,146		(39,558	)		94,588		90,735		5.3	%		(22.9	%)		17.1	%		20.3	%
Professional Liability		26,206		(6,343	)		19,863		15,931		24,346		(12,886	)		11,460		16,432		7.6	%		(50.8	%)		73.3	%		(3.0	%)
Total	$	210,647	$	(54,497	)	$	156,150	$	148,340	$	199,327	$	(68,730	)	$	130,597	$	131,091		5.7	%		(20.7	%)		19.6	%		13.2	%
Int'l Insurance
Marine	$	71,948	$	(11,089	)	$	60,859	$	38,856	$	67,410	$	(10,822	)	$	56,588	$	37,792		6.7	%		2.5	%		7.5	%		2.8	%
P&C		44,046		(17,229	)		26,817		21,209		32,950		(16,129	)		16,821		16,034		33.7	%		6.8	%		59.4	%		32.3	%
Professional Liability		28,149		(6,653	)		21,496		17,943		22,067		(7,305	)		14,762		11,699		27.6	%		(8.9	%)		45.6	%		53.4	%
Total	$	144,143	$	(34,971	)	$	109,172	$	78,008	$	122,427	$	(34,256	)	$	88,171	$	65,525		17.7	%		2.1	%		23.8	%		19.1	%
GlobalRe	$	59,087	$	(4,589	)	$	54,498	$	38,010	$	74,706	$	(4,516	)	$	70,190	$	39,516		(20.9	%)		1.6	%		(22.4	%)		(3.8	%)
Total	$	413,877	$	(94,057	)	$	319,820	$	264,358	$	396,460	$	(107,502	)	$	288,958	$	236,132		4.4	%		(12.5	%)		10.7	%		12.0	%

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Investments (Tables)

3 Months Ended

Mar. 31, 2016

Investments Debt And Equity Securities [Abstract]

Investments Including Other-Than-Temporarily Impaired Securities Recognized within Accumulated Other Comprehensive Income

The following tables set forth our Company’s investments as of March 31, 2016 and December 31, 2015 and include Other-than-temporary-impairment (“OTTI”) securities recognized within Accumulated other comprehensive income (“AOCI”):

	March 31, 2016
			Gross		Gross			Cost or
	Fair		Unrealized		Unrealized			Amortized
amounts in thousands	Value		Gains		(Losses)			Cost
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign    government bonds	$	322,009	$	4,934	$	(4,478	)	$	321,553
States, municipalities and political subdivisions		550,855		26,085		(497	)		525,267
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		380,418		8,831		(323	)		371,910
Residential mortgage obligations		29,451		569		(131	)		29,013
Asset-backed securities		235,714		421		(2,040	)		237,333
Commercial mortgage-backed securities		188,169		4,903		(1,718	)		184,984
Subtotal	$	833,752	$	14,724	$	(4,212	)	$	823,240
Corporate bonds		771,104		15,457		(7,130	)		762,777
Total fixed maturities	$	2,477,720	$	61,200	$	(16,317	)	$	2,432,837
Equity securities		314,815		29,650		(1,646	)		286,811
Short-term investments		211,782		—		—			211,782
Total investments	$	3,004,317	$	90,850	$	(17,963	)	$	2,931,430

	December 31, 2015
			Gross		Gross			Cost or
	Fair		Unrealized		Unrealized			Amortized
amounts in thousands	Value		Gains		(Losses)			Cost
Fixed maturities:
U.S. Treasury bonds, agency bonds and  foreign    government bonds	$	252,882	$	2,273	$	(9,214	)	$	259,823
States, municipalities and political subdivisions		576,859		21,233		(781	)		556,407
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		379,269		5,573		(2,082	)		375,778
Residential mortgage obligations		30,465		694		(82	)		29,853
Asset-backed securities		225,012		85		(1,624	)		226,551
Commercial mortgage-backed securities		189,713		3,119		(1,864	)		188,458
Subtotal	$	824,459	$	9,471	$	(5,652	)	$	820,640
Corporate bonds		760,010		7,373		(10,738	)		763,375
Total fixed maturities	$	2,414,210	$	40,350	$	(26,385	)	$	2,400,245
Equity securities		305,271		26,341		(3,013	)		281,943
Short-term investments		217,745		2		—			217,743
Total investments	$	2,937,226	$	66,693	$	(29,398	)	$	2,899,931

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

The contractual maturity dates for Fixed maturities categorized by the number of years until maturity as of March 31, 2016 are shown in the following table:

	March 31, 2016
	Fair		Amortized
amounts in thousands	Value		Cost
Due in one year or less	$	128,718	$	130,610
Due after one year through five years		805,858		795,317
Due after five years through ten years		301,025		292,205
Due after ten years		408,367		391,465
Mortgage-backed and asset-backed securities		833,752		823,240
Total	$	2,477,720	$	2,432,837

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

The following tables summarize all securities in a gross unrealized loss position as of March 31, 2016 and December 31, 2015, showing the aggregate fair value and gross unrealized loss by the length of time those securities have continuously been in a gross unrealized loss position:

	March 31, 2016
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
amounts in thousands	Value		(Losses)			Value		(Losses)			Value		(Losses)
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign    government bonds	$	29,155	$	(771	)	$	19,451	$	(3,707	)	$	48,606	$	(4,478	)
States, municipalities and political subdivisions		18,911		(266	)		6,387		(231	)		25,298		(497	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		4,082		(4	)		23,634		(319	)		27,716		(323	)
Residential mortgage obligations		4,562		(32	)		1,793		(99	)		6,355		(131	)
Asset-backed securities		91,678		(790	)		70,768		(1,250	)		162,446		(2,040	)
Commercial mortgage-backed securities		49,889		(1,690	)		3,362		(28	)		53,251		(1,718	)
Subtotal	$	150,211	$	(2,516	)	$	99,557	$	(1,696	)	$	249,768	$	(4,212	)
Corporate bonds		156,107		(6,590	)		21,949		(540	)		178,056		(7,130	)
Total fixed maturities	$	354,384	$	(10,143	)	$	147,344	$	(6,174	)	$	501,728	$	(16,317	)
Equity securities		37,422		(1,646	)		—		—			37,422		(1,646	)
Total fixed maturities and equity securities	$	391,806	$	(11,789	)	$	147,344	$	(6,174	)	$	539,150	$	(17,963	)

	December 31, 2015
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
amounts in thousands	Value		(Losses)			Value		(Losses)			Value		(Losses)
Fixed maturities:
U.S. Treasury bonds, agency bonds and    foreign government bonds	$	142,233	$	(3,032	)	$	22,230	$	(6,182	)	$	164,463	$	(9,214	)
States, municipalities and political subdivisions		50,577		(549	)		4,808		(232	)		55,385		(781	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		164,817		(1,315	)		29,862		(767	)		194,679		(2,082	)
Residential mortgage obligations		3,910		(5	)		1,684		(77	)		5,594		(82	)
Asset-backed securities		112,479		(663	)		81,477		(961	)		193,956		(1,624	)
Commercial mortgage-backed securities		83,024		(1,826	)		3,065		(38	)		86,089		(1,864	)
Subtotal	$	364,230	$	(3,809	)	$	116,088	$	(1,843	)	$	480,318	$	(5,652	)
Corporate bonds		395,399		(10,114	)		13,849		(624	)		409,248		(10,738	)
Total fixed maturities	$	952,439	$	(17,504	)	$	156,975	$	(8,881	)	$	1,109,414	$	(26,385	)
Equity securities		58,531		(3,013	)		—		—			58,531		(3,013	)
Total fixed maturities and equity securities	$	1,010,970	$	(20,517	)	$	156,975	$	(8,881	)	$	1,167,945	$	(29,398	)

Net Investment Income

Our Company’s Net investment income was derived from the following sources:

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities	$	16,737		$	15,047
Equity securities		3,447			1,968
Short-term investments		210			183
Total investment income	$	20,394		$	17,198
Investment expenses		(800	)		(945	)
Net investment income	$	19,594		$	16,253

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

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

	Three Months Ended March 31,
amounts in thousands	2016			2015
Fixed maturities:
Gains	$	2,548		$	1,174
Losses		(1,127	)		(572	)
Fixed maturities, net	$	1,421		$	602
Short-term:
Gains	$	268		$	8
Losses		(83	)		(162	)
Short-term, net	$	185		$	(154	)
Equity securities:
Gains	$	609		$	6,325
Losses		(618	)		(1,177	)
Equity securities, net	$	(9	)	$	5,148
Net realized gains (losses)	$	1,597		$	5,596

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Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

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

The following tables present, for each of the fair value hierarchy levels as defined by the accounting guidance for fair value measurements and described below, our Company’s Fixed maturities and Equity securities by asset class that are measured at fair value on a recurring basis, as well as the fair value of the 5.75% Senior notes due October 15, 2023 (the “Senior notes”) carried at amortized cost as of March 31, 2016 and December 31, 2015:

	March 31, 2016
amounts in thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S.  Treasury bonds, agency bonds and    foreign government bonds	$	137,743	$	184,266	$	—	$	322,009
States, municipalities and political subdivisions		—		550,855		—		550,855
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		380,418		—		380,418
Residential mortgage obligations		—		29,451		—		29,451
Asset-backed securities		—		235,714		—		235,714
Commercial mortgage-backed securities		—		188,169		—		188,169
Subtotal	$	—	$	833,752	$	—	$	833,752
Corporate bonds		—		771,104		—		771,104
Total fixed maturities	$	137,743	$	2,339,977	$	—	$	2,477,720
Equity securities		136,883		177,932		—		314,815
Short-term investments		211,782		—		—		211,782
Total assets measured at fair value	$	486,408	$	2,517,909	$	—	$	3,004,317
Senior notes		—		290,656		—		290,656
Total liabilities measured at fair value	$	—	$	290,656	$	—	$	290,656

	December 31, 2015
amounts in thousands	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. Treasury bonds, agency bonds and    foreign government bonds	$	67,394	$	185,488	$	—	$	252,882
States, municipalities and political subdivisions		—		576,859		—		576,859
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		379,269		—		379,269
Residential mortgage obligations		—		30,465		—		30,465
Asset-backed securities		—		225,012		—		225,012
Commercial mortgage-backed securities		—		189,713		—		189,713
Subtotal	$	—	$	824,459	$	—	$	824,459
Corporate bonds		—		760,010		—		760,010
Total fixed maturities	$	67,394	$	2,346,816	$	—	$	2,414,210
Equity securities		126,455		178,816		—		305,271
Short-term investments		217,745		—		—		217,745
Total assets measured at fair value	$	411,594	$	2,525,632	$	—	$	2,937,226
Senior notes	$	—	$	282,486	$	—	$	282,486
Total liabilities measured at fair value	$	—	$	282,486	$	—	$	282,486

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Organization and Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2016
Organization And Summary Of Significant Accounting Policies [Line Items]
Effective Tax Rate	35.00%
Syndicate 1221
Organization And Summary Of Significant Accounting Policies [Line Items]
Percentage control of stamp capacity	100.00%

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Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2016 Segment
Segment Reporting [Abstract]
Number of underwriting Segments	3
Number of Operating Segments	3

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Financial Data by Segment (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Net earned premiums		$ 264,358	$ 236,132
Net losses and LAE		(152,956)	(130,198)
Commission expenses		(37,554)	(32,905)
Other operating expenses		(60,809)	(54,909)
Other underwriting income (expense)		9	55
Underwriting profit (loss)		13,048	18,175
Net investment income		19,594	16,253
Net realized gains (losses)		1,597	5,596
Interest expense		(3,858)	(3,855)
Other income (loss)		2,540	2,187
Income before income taxes		32,921	38,356
Income tax (expense) benefit		(9,989)	(12,427)
Net income		$ 22,932	$ 25,929
Losses and LAE ratio		57.90%	55.10%
Commission expense ratio		14.20%	13.90%
Other operating expense ratio	[1]	23.00%	23.30%
Combined ratio		95.10%	92.30%
U.S.Insurance
Segment Reporting Information [Line Items]
Net earned premiums		$ 148,340	$ 131,091
Net losses and LAE		(91,512)	(77,799)
Commission expenses		(14,855)	(14,345)
Other operating expenses		(33,761)	(33,688)
Other underwriting income (expense)		361	196
Underwriting profit (loss)		8,573	5,455
Income before income taxes		$ 8,573	$ 5,455
Losses and LAE ratio		61.70%	59.30%
Commission expense ratio		10.00%	10.90%
Other operating expense ratio	[1]	22.50%	25.60%
Combined ratio		94.20%	95.80%
International Insurance
Segment Reporting Information [Line Items]
Net earned premiums		$ 78,008	$ 65,525
Net losses and LAE		(40,410)	(29,691)
Commission expenses		(15,355)	(11,413)
Other operating expenses		(21,771)	(17,009)
Underwriting profit (loss)		472	7,412
Income before income taxes		$ 472	$ 7,412
Losses and LAE ratio		51.80%	45.30%
Commission expense ratio		19.70%	17.40%
Other operating expense ratio	[1]	27.90%	26.00%
Combined ratio		99.40%	88.70%
Global Reinsurance
Segment Reporting Information [Line Items]
Net earned premiums		$ 38,010	$ 39,516
Net losses and LAE		(21,034)	(22,708)
Commission expenses		(7,745)	(7,298)
Other operating expenses		(5,277)	(4,212)
Other underwriting income (expense)		49	10
Underwriting profit (loss)		4,003	5,308
Income before income taxes		$ 4,003	$ 5,308
Losses and LAE ratio		55.30%	57.50%
Commission expense ratio		20.40%	18.50%
Other operating expense ratio	[1]	13.80%	10.60%
Combined ratio		89.50%	86.60%
Corporate
Segment Reporting Information [Line Items]
Commission expenses	[2]	$ 401	$ 151
Other underwriting income (expense)	[2]	(401)	(151)
Net investment income	[2]	19,594	16,253
Net realized gains (losses)	[2]	1,597	5,596
Interest expense	[2]	(3,858)	(3,855)
Other income (loss)	[2]	2,540	2,187
Income before income taxes	[2]	19,873	20,181
Income tax (expense) benefit	[2]	$ (9,989)	$ (12,427)

[1] Includes Other operating expenses and Other underwriting income (expense).

[2] Includes Corporate segment intercompany eliminations.

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Additional Financial Data by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Gross written premiums	$ 413,877	$ 396,460
Ceded written premiums	(94,057)	(107,502)
Net written premiums	319,820	288,958
Net earned premiums	$ 264,358	236,132
% Change Gross written premiums	4.40%
% Change Ceded written premiums	(12.50%)
% Change Net written premiums	10.70%
% Change Net earned premiums	12.00%
U.S.Insurance
Segment Reporting Information [Line Items]
Gross written premiums	$ 210,647	199,327
Ceded written premiums	(54,497)	(68,730)
Net written premiums	156,150	130,597
Net earned premiums	$ 148,340	131,091
% Change Gross written premiums	5.70%
% Change Ceded written premiums	(20.70%)
% Change Net written premiums	19.60%
% Change Net earned premiums	13.20%
U.S.Insurance | Marine
Segment Reporting Information [Line Items]
Gross written premiums	$ 43,163	40,835
Ceded written premiums	(17,647)	(16,286)
Net written premiums	25,516	24,549
Net earned premiums	$ 23,250	23,924
% Change Gross written premiums	5.70%
% Change Ceded written premiums	8.40%
% Change Net written premiums	3.90%
% Change Net earned premiums	(2.80%)
U.S.Insurance | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	$ 141,278	134,146
Ceded written premiums	(30,507)	(39,558)
Net written premiums	110,771	94,588
Net earned premiums	$ 109,159	90,735
% Change Gross written premiums	5.30%
% Change Ceded written premiums	(22.90%)
% Change Net written premiums	17.10%
% Change Net earned premiums	20.30%
U.S.Insurance | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	$ 26,206	24,346
Ceded written premiums	(6,343)	(12,886)
Net written premiums	19,863	11,460
Net earned premiums	$ 15,931	16,432
% Change Gross written premiums	7.60%
% Change Ceded written premiums	(50.80%)
% Change Net written premiums	73.30%
% Change Net earned premiums	(3.00%)
International Insurance
Segment Reporting Information [Line Items]
Gross written premiums	$ 144,143	122,427
Ceded written premiums	(34,971)	(34,256)
Net written premiums	109,172	88,171
Net earned premiums	$ 78,008	65,525
% Change Gross written premiums	17.70%
% Change Ceded written premiums	2.10%
% Change Net written premiums	23.80%
% Change Net earned premiums	19.10%
International Insurance | Marine
Segment Reporting Information [Line Items]
Gross written premiums	$ 71,948	67,410
Ceded written premiums	(11,089)	(10,822)
Net written premiums	60,859	56,588
Net earned premiums	$ 38,856	37,792
% Change Gross written premiums	6.70%
% Change Ceded written premiums	2.50%
% Change Net written premiums	7.50%
% Change Net earned premiums	2.80%
International Insurance | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	$ 44,046	32,950
Ceded written premiums	(17,229)	(16,129)
Net written premiums	26,817	16,821
Net earned premiums	$ 21,209	16,034
% Change Gross written premiums	33.70%
% Change Ceded written premiums	6.80%
% Change Net written premiums	59.40%
% Change Net earned premiums	32.30%
International Insurance | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	$ 28,149	22,067
Ceded written premiums	(6,653)	(7,305)
Net written premiums	21,496	14,762
Net earned premiums	$ 17,943	11,699
% Change Gross written premiums	27.60%
% Change Ceded written premiums	(8.90%)
% Change Net written premiums	45.60%
% Change Net earned premiums	53.40%
Global Reinsurance
Segment Reporting Information [Line Items]
Gross written premiums	$ 59,087	74,706
Ceded written premiums	(4,589)	(4,516)
Net written premiums	54,498	70,190
Net earned premiums	$ 38,010	$ 39,516
% Change Gross written premiums	(20.90%)
% Change Ceded written premiums	1.60%
% Change Net written premiums	(22.40%)
% Change Net earned premiums	(3.80%)

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Investments Including Other-Than-Temporarily Impaired Securities Recognized within Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Gain (Loss) on Investments [Line Items]
Total investments	$ 3,004,317	$ 2,937,226
Gross Unrealized Gains	90,850	66,693
Gross Unrealized Losses	(17,963)	(29,398)
Amortized Cost	2,931,430	2,899,931
Fixed maturities
Gain (Loss) on Investments [Line Items]
Total investments	2,477,720	2,414,210
Gross Unrealized Gains	61,200	40,350
Gross Unrealized Losses	(16,317)	(26,385)
Amortized Cost	2,432,837	2,400,245
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign
Gain (Loss) on Investments [Line Items]
Total investments	322,009	252,882
Gross Unrealized Gains	4,934	2,273
Gross Unrealized Losses	(4,478)	(9,214)
Amortized Cost	321,553	259,823
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Total investments	550,855	576,859
Gross Unrealized Gains	26,085	21,233
Gross Unrealized Losses	(497)	(781)
Amortized Cost	525,267	556,407
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	380,418	379,269
Gross Unrealized Gains	8,831	5,573
Gross Unrealized Losses	(323)	(2,082)
Amortized Cost	371,910	375,778
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Total investments	29,451	30,465
Gross Unrealized Gains	569	694
Gross Unrealized Losses	(131)	(82)
Amortized Cost	29,013	29,853
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	235,714	225,012
Gross Unrealized Gains	421	85
Gross Unrealized Losses	(2,040)	(1,624)
Amortized Cost	237,333	226,551
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	188,169	189,713
Gross Unrealized Gains	4,903	3,119
Gross Unrealized Losses	(1,718)	(1,864)
Amortized Cost	184,984	188,458
Fixed maturities | Mortgage-backed and asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	833,752	824,459
Gross Unrealized Gains	14,724	9,471
Gross Unrealized Losses	(4,212)	(5,652)
Amortized Cost	823,240	820,640
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Total investments	771,104	760,010
Gross Unrealized Gains	15,457	7,373
Gross Unrealized Losses	(7,130)	(10,738)
Amortized Cost	762,777	763,375
Equity Securities
Gain (Loss) on Investments [Line Items]
Total investments	314,815	305,271
Gross Unrealized Gains	29,650	26,341
Gross Unrealized Losses	(1,646)	(3,013)
Amortized Cost	286,811	281,943
Short-term investments
Gain (Loss) on Investments [Line Items]
Total investments	211,782	217,745
Gross Unrealized Gains		2
Amortized Cost	$ 211,782	$ 217,743

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Investments - Additional Information (Detail) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016 USD ($) Security	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($) Security
Schedule of Investments [Line Items]
Non-credit OTTI on fixed maturities in an unrealized gain position	$ 400		$ 500
Gross Unrealized Loss	17,963		$ 29,398
OTTI losses	0	$ 0
Credit loss portion of the OTTI losses on fixed maturities	$ 2,400	$ 2,400
Equity Securities
Schedule of Investments [Line Items]
Number of securities in unrealized loss position | Security	36		57
Gross Unrealized Loss	$ 1,646		$ 3,013
Fixed maturities
Schedule of Investments [Line Items]
Number of securities in unrealized loss position | Security	204		368
Gross Unrealized Loss	$ 16,317		$ 26,385
Maximum | Equity Securities
Schedule of Investments [Line Items]
Percentage of fair value under carrying value	80.00%
Non-government-backed securities
Schedule of Investments [Line Items]
Gross Unrealized Loss	$ 2,300		$ 2,600
Non-government-backed securities | Maximum
Schedule of Investments [Line Items]
Percentage of investment	5.00%		5.00%
Mortgage-backed and asset-backed securities
Schedule of Investments [Line Items]
Securities, effective maturities	4 years 1 month 6 days
Mortgage-backed and asset-backed securities | Fixed maturities
Schedule of Investments [Line Items]
Gross Unrealized Loss	$ 4,212		$ 5,652

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Scheduled Maturity Dates for Fixed Maturity Securities by Number of Years Until Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value
Due in one year or less	$ 128,718
Due after one year through five years	805,858
Due after five years through ten years	301,025
Due after ten years	408,367
Mortgage-backed and asset-backed securities	833,752
Total	2,477,720	$ 2,414,210
Amortized Cost
Due in one year or less	130,610
Due after one year through five years	795,317
Due after five years through ten years	292,205
Due after ten years	391,465
Mortgage-backed and asset-backed securities	823,240
Total	$ 2,432,837	$ 2,400,245

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Summary of Aggregate Fair Value and Gross Unrealized Loss by Length of Time Securities had Continuously been in Gross Unrealized Loss Position as Well as Number of Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	$ 391,806	$ 1,010,970
Less than 12 months Gross Unrealized Losses	(11,789)	(20,517)
Greater than 12 months Fair Value	147,344	156,975
Greater than 12 months Gross Unrealized Losses	(6,174)	(8,881)
Fair Value	539,150	1,167,945
Gross Unrealized Losses	(17,963)	(29,398)
Fixed maturities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	354,384	952,439
Less than 12 months Gross Unrealized Losses	(10,143)	(17,504)
Greater than 12 months Fair Value	147,344	156,975
Greater than 12 months Gross Unrealized Losses	(6,174)	(8,881)
Fair Value	501,728	1,109,414
Gross Unrealized Losses	(16,317)	(26,385)
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	29,155	142,233
Less than 12 months Gross Unrealized Losses	(771)	(3,032)
Greater than 12 months Fair Value	19,451	22,230
Greater than 12 months Gross Unrealized Losses	(3,707)	(6,182)
Fair Value	48,606	164,463
Gross Unrealized Losses	(4,478)	(9,214)
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	18,911	50,577
Less than 12 months Gross Unrealized Losses	(266)	(549)
Greater than 12 months Fair Value	6,387	4,808
Greater than 12 months Gross Unrealized Losses	(231)	(232)
Fair Value	25,298	55,385
Gross Unrealized Losses	(497)	(781)
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	4,082	164,817
Less than 12 months Gross Unrealized Losses	(4)	(1,315)
Greater than 12 months Fair Value	23,634	29,862
Greater than 12 months Gross Unrealized Losses	(319)	(767)
Fair Value	27,716	194,679
Gross Unrealized Losses	(323)	(2,082)
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	4,562	3,910
Less than 12 months Gross Unrealized Losses	(32)	(5)
Greater than 12 months Fair Value	1,793	1,684
Greater than 12 months Gross Unrealized Losses	(99)	(77)
Fair Value	6,355	5,594
Gross Unrealized Losses	(131)	(82)
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	91,678	112,479
Less than 12 months Gross Unrealized Losses	(790)	(663)
Greater than 12 months Fair Value	70,768	81,477
Greater than 12 months Gross Unrealized Losses	(1,250)	(961)
Fair Value	162,446	193,956
Gross Unrealized Losses	(2,040)	(1,624)
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	49,889	83,024
Less than 12 months Gross Unrealized Losses	(1,690)	(1,826)
Greater than 12 months Fair Value	3,362	3,065
Greater than 12 months Gross Unrealized Losses	(28)	(38)
Fair Value	53,251	86,089
Gross Unrealized Losses	(1,718)	(1,864)
Fixed maturities | Mortgage-backed and asset-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	150,211	364,230
Less than 12 months Gross Unrealized Losses	(2,516)	(3,809)
Greater than 12 months Fair Value	99,557	116,088
Greater than 12 months Gross Unrealized Losses	(1,696)	(1,843)
Fair Value	249,768	480,318
Gross Unrealized Losses	(4,212)	(5,652)
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	156,107	395,399
Less than 12 months Gross Unrealized Losses	(6,590)	(10,114)
Greater than 12 months Fair Value	21,949	13,849
Greater than 12 months Gross Unrealized Losses	(540)	(624)
Fair Value	178,056	409,248
Gross Unrealized Losses	(7,130)	(10,738)
Equity Securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	37,422	58,531
Less than 12 months Gross Unrealized Losses	(1,646)	(3,013)
Fair Value	37,422	58,531
Gross Unrealized Losses	$ (1,646)	$ (3,013)

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Net Investment Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net Investment Income [Line Items]
Investment Income	$ 20,394	$ 17,198
Investment expenses	(800)	(945)
Net investment income	19,594	16,253
Fixed maturities
Net Investment Income [Line Items]
Investment Income	16,737	15,047
Equity Securities
Net Investment Income [Line Items]
Investment Income	3,447	1,968
Short-term investments
Net Investment Income [Line Items]
Investment Income	$ 210	$ 183

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Realized Gains and Losses, Excluding Net Other-Than-Temporary Impairment Losses Recognized in Earnings (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Gain (Loss) on Investments [Line Items]
Net realized gains (losses)	$ 1,597	$ 5,596
Fixed maturities
Gain (Loss) on Investments [Line Items]
Gains	2,548	1,174
Losses	(1,127)	(572)
Net realized gains (losses)	1,421	602
Short-term investments
Gain (Loss) on Investments [Line Items]
Gains	268	8
Losses	(83)	(162)
Net realized gains (losses)	185	(154)
Equity Securities
Gain (Loss) on Investments [Line Items]
Gains	609	6,325
Losses	(618)	(1,177)
Net realized gains (losses)	$ (9)	$ 5,148

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Fair Value Measurement - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Significant transfers between Level 1 and Level 2	$ 0	$ 0
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 assets	$ 0	$ 0
5.75% Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate stated on senior notes	5.75%
Senior notes due date	Oct. 15, 2023

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Fixed Maturities and Equity Securities by Asset Class that are Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	$ 3,004,317	$ 2,937,226
Total liabilities measured at fair value	290,656	282,486
Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes, at fair value	290,656	282,486
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	486,408	411,594
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,517,909	2,525,632
Total liabilities measured at fair value	290,656	282,486
Level 2 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes, at fair value	290,656	282,486
Fixed maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,477,720	2,414,210
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	322,009	252,882
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	550,855	576,859
Fixed maturities | Agency mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	380,418	379,269
Fixed maturities | Residential Mortgage Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	29,451	30,465
Fixed maturities | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	235,714	225,012
Fixed maturities | Commercial mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	188,169	189,713
Fixed maturities | Mortgage-backed and asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	833,752	824,459
Fixed maturities | Corporate bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	771,104	760,010
Fixed maturities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	137,743	67,394
Fixed maturities | Level 1 | U.S. Treasury bonds, agency bonds, and foreign
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	137,743	67,394
Fixed maturities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,339,977	2,346,816
Fixed maturities | Level 2 | U.S. Treasury bonds, agency bonds, and foreign
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	184,266	185,488
Fixed maturities | Level 2 | States, municipalities and political subdivisions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	550,855	576,859
Fixed maturities | Level 2 | Agency mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	380,418	379,269
Fixed maturities | Level 2 | Residential Mortgage Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	29,451	30,465
Fixed maturities | Level 2 | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	235,714	225,012
Fixed maturities | Level 2 | Commercial mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	188,169	189,713
Fixed maturities | Level 2 | Mortgage-backed and asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	833,752	824,459
Fixed maturities | Level 2 | Corporate bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	771,104	760,010
Equity Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	314,815	305,271
Equity Securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	136,883	126,455
Equity Securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	177,932	178,816
Short-term investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	211,782	217,745
Short-term investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	$ 211,782	$ 217,745

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Ceded Reinsurance - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Insurance [Abstract]
Reinsurance recoverables	$ 1,100.0
Reserve for uncollectible reinsurance amount	$ 6.9	$ 6.9

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Commitments, Contingencies & Guarantees - Additional Information (Detail) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Oct. 20, 2015	Sep. 30, 2013	Mar. 31, 2016	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Incentive awarded to the company by the State of Connecticut, total			$ 11.5
Incentive awarded to the company by the State of Connecticut, non-interest bearing loans		$ 6.0	8.0
Incentive awarded to the company by the State of Connecticut, grants		1.5	$ 3.5
Non-interest bearing incentive loan term			10 years
Forgiveness awarded to the company by the state of Connecticut	$ 6.0		$ 6.0
Additional forgiveness awarded to the company by the state of Connecticut	1.0		1.0
Forgiveness awarded to the company by the State of Connecticut, grants	$ 0.5		0.5
Incentive awarded to the company by the State of Connecticut, revenue recognized			0.4
Incentive awarded to the company by the State of Connecticut, deferred revenue		$ 7.5	$ 5.9	$ 6.3

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Stock-Based Compensation - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Options and Non Performance Based Grants | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period	3 years
Options and Non Performance Based Grants | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment award, award vesting period	4 years
Options expiration term (in years)	10 years
Stock incentive Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive units granted | shares	185,473
Stock incentive Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive unit, grant price	$ 80.98
Stock incentive Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive unit, grant price	$ 86.68