10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For the quarterly period ended September 30, 2016

or

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

For the transition period from              to

Commission file number 0-15886

The Navigators Group, Inc.

(Exact name of registrant as specified in its charter)

Delaware	13-3138397
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)
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  ☒    No  ☐

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

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

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐

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

The number of common shares outstanding as of October 28, 2016 was 14,559,435.

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

INDEX

Contents

PART I. FINANCIAL INFORMATION	3
Item 1.      Financial Statements	3
Consolidated Balance Sheets (Unaudited) – September 30, 2016 and December 31, 2015	3
Consolidated Statements of Income (Unaudited) – Three and Nine Months Ended September 30, 2016 and 2015	4
Consolidated Statements of Comprehensive Income (Unaudited) – Three and Nine Months Ended September 30, 2016 and 2015	5
Consolidated Statement of Stockholders’ Equity (Unaudited) –Nine Months Ended September 30, 2016	6
Consolidated Statements of Cash Flows (Unaudited) – Nine Months Ended September 30, 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	20
Item 3.      Quantitative and Qualitative Disclosures about Market Risk	44
Item 4.      Controls and Procedures	45
PART II - OTHER INFORMATION	46
Item 1.      Legal Proceedings	46
Item 1A.   Risk Factors	46
Item 2.      Unregistered Sales of Equity Securities and Use of Proceeds	46
Item 3.      Defaults Upon Senior Securities	47
Item 4.      Mine Safety Disclosures	47
Item 5.      Other Information	47
Item 6.      Exhibits	48
Index to Exhibits	50

2

PART I. FINANCIAL INFORMATION

Item 1.  Financial Statements

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Unaudited)

	September 30,			December 31,
amounts in thousands, except share amounts	2016			2015
ASSETS
Investments:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2016:  $2,591,050; 2015: $2,400,245)	$	2,660,417		$	2,414,210
Equity securities, available-for-sale, at fair value (cost: 2016: $305,906; 2015: $281,943)		342,677			305,271
Other invested assets		2,021			—
Short-term investments, at fair value (amortized cost: 2016: $134,273; 2015: $217,743)		134,273			217,745
Total investments	$	3,139,388		$	2,937,226
Cash		147,515			69,901
Premiums receivable		320,429			276,616
Prepaid reinsurance premiums		222,891			232,588
Reinsurance recoverable on paid losses		73,331			49,506
Reinsurance recoverable on unpaid losses and loss adjustment expenses		787,917			809,518
Deferred policy acquisition costs		116,295			91,983
Accrued investment income		16,840			16,001
Goodwill and other intangible assets		6,568			6,807
Current income tax receivable, net		15,879			22,323
Deferred income tax, net		—			3,900
Other assets		50,343			67,643
Total assets	$	4,897,396		$	4,584,012
LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities:
Reserves for losses and loss adjustment expenses	$	2,268,127		$	2,202,644
Unearned premiums		897,975			820,676
Reinsurance balances payable		123,702			107,411
Senior notes		263,690			263,580
Deferred income tax, net		8,703			—
Payable for investments purchased		42,783			1,495
Accounts payable and other liabilities		88,135			92,058
Total liabilities	$	3,693,115		$	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 18,070,815 shares    for 2016 and 17,942,269 shares for 2015		1,806			1,793
Additional paid-in capital		368,860			357,829
Treasury stock, at cost (3,511,380 shares for 2016 and 2015)		(155,801	)		(155,801	)
Retained earnings		927,239			868,723
Accumulated other comprehensive income		62,177			23,604
Total stockholders' equity	$	1,204,281		$	1,096,148
Total liabilities and stockholders' equity	$	4,897,396		$	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 September 30,						Nine Months Ended September 30,
amounts in thousands, except share and per share amounts	2016			2015			2016			2015
Gross written premiums	$	374,930		$	354,062		$	1,201,372		$	1,129,993
Revenues:
Net written premiums		277,001			251,939			903,356			799,141
Change in unearned premiums		7,009			2,143			(86,996	)		(66,599	)
Net earned premiums	$	284,010		$	254,082		$	816,360		$	732,542
Net investment income		19,875			17,371			59,344			50,219
Total other-than-temporary impairment losses		23			(1,298	)		(248	)		(1,747	)
Portion of loss recognized in other comprehensive income (before tax)		(23	)		23			98			49
Net other-than-temporary impairment losses recognized in earnings		—			(1,275	)		(150	)		(1,698	)
Net realized gains (losses)		1,586			518			5,143			10,453
Other income (expenses)		(183	)		(2,518	)		6,796			(4,638	)
Total revenues	$	305,288		$	268,178		$	887,493		$	786,878
Expenses:
Net losses and loss adjustment expenses	$	172,793		$	146,546		$	492,955		$	418,717
Commission expenses		42,611			34,253			120,891			98,638
Other operating expenses		56,137			56,599			176,020			164,297
Interest expense		3,859			3,856			11,575			11,567
Total expenses	$	275,400		$	241,254		$	801,441		$	693,219
Income before income taxes		29,888			26,924			86,052			93,659
Income tax expense (benefit)		7,875			8,723			24,917			30,345
Net income	$	22,013		$	18,201		$	61,135		$	63,314
Net income per common share:
Basic	$	1.51		$	1.26		$	4.21		$	4.40
Diluted	$	1.46		$	1.23		$	4.08		$	4.29
Average common shares outstanding:
Basic		14,557,376			14,411,927			14,528,917			14,384,291
Diluted		15,070,422			14,811,095			14,998,385			14,767,949

See accompanying Notes to Interim Consolidated Financial Statements.

4

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

	Three Months Ended September 30,
amounts in thousands	2016			2015
Net income	$	22,013		$	18,201
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net    of deferred tax of $1,300 and $(549) in 2016 and 2015, respectively		(2,414	)		1,018
Reclassification adjustment for net realized (gains) losses included    in net income net of deferred tax of $279 and $293 in 2016 and    2015,  respectively		(519	)		(544	)
Change in net unrealized gains (losses) on investments	$	(2,933	)	$	474
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period,    net of deferred tax of $(8) and $8 in 2016 and 2015,  respectively		15			(15	)
Reclassification adjustment for other-than-temporary impairment credit    losses recognized in net income net of deferred tax of $0 and $(101)in 2016    and 2015, respectively		—			188
Change in other-than-temporary impairments	$	15		$	173
Change in foreign currency translation gains (losses), net of deferred    tax of $175 and $(1) in 2016 and 2015, respectively		(335	)		1
Other comprehensive income (loss)	$	(3,253	)	$	648
Comprehensive income (loss)	$	18,760		$	18,849

	Nine Months Ended September 30,
amounts in thousands	2016			2015
Net income	$	61,135		$	63,314
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net    of deferred tax of $(23,349) and $9,858 in 2016 and 2015, respectively		43,362			(18,765	)
Reclassification adjustment for net realized (gains) losses included in net    income net of deferred tax of $(780) and $1,472 in 2016 and 2015,  respectively		1,449			(2,733	)
Change in net unrealized gains (losses) on investments	$	44,811		$	(21,498	)
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period,    net of deferred tax of $34 and $17 in 2016 and 2015,  respectively		(64	)		(32	)
Reclassification adjustment for other-than-temporary impairment credit    losses recognized in net income net of deferred tax of $0 and $(170) in    2016 and 2015, respectively		—			316
Change in other-than-temporary impairments	$	(64	)	$	284
Change in foreign currency translation gains (losses), net of deferred    tax of $3,322 and $(6) in 2016 and 2015, respectively		(6,174	)		12
Other comprehensive income (loss)	$	38,573		$	(21,202	)
Comprehensive income (loss)	$	99,708		$	42,112

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		—		—		—			—		—			61,135			—			61,135
Dividends paid		—		—		—			—		—			(2,619	)		—			(2,619	)
Changes in comprehensive income:
Change in net unrealized gain (loss) on investments		—		—		—			—		—			—			44,811			44,811
Change in net non-credit other-than-temporary  impairment    losses		—		—		—			—		—			—			(64	)		(64	)
Change in foreign currency  translation gain (loss)		—		—		—			—		—			—			(6,174	)		(6,174	)
Total comprehensive  income (loss)		—		—		—			—		—			—			38,573			38,573
Shares issued under stock plan		128,546		13		(2,898	)		—		—			—			—			(2,885	)
Share-based compensation		—		—		13,929			—		—			—			—			13,929
Balance, September 30, 2016		18,070,815	$	1,806	$	368,860			3,511,380	$	(155,801	)	$	927,239		$	62,177		$	1,204,281

See accompanying Notes to Interim Consolidated Financial Statements.

6

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Nine Months Ended September 30,
amounts in thousands	2016			2015
Operating activities:
Net income	$	61,135		$	63,314
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation & amortization		4,214			3,892
Deferred income taxes		(7,066	)		(185	)
Net realized (gains) losses		(5,143	)		(10,453	)
Net other-than-temporary impairments recognized in earnings		150			1,698
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment    expenses		(2,225	)		55,436
Reserves for losses and loss adjustment expenses		65,483			15,683
Prepaid reinsurance premiums		9,697			(14,637	)
Unearned premiums		77,299			81,237
Premiums receivable		(43,813	)		(735	)
Deferred policy acquisition costs		(24,312	)		(9,507	)
Accrued investment income		(839	)		(1,338	)
Reinsurance balances payable		16,291			(18,993	)
Current income tax payable, net		5,101			411
Other		31,047			(6,679	)
Net cash provided by (used in) operating activities	$	187,019		$	159,144
Investing activities:
Fixed maturities
Redemptions and maturities	$	207,620		$	126,930
Sales		370,501			266,707
Purchases		(776,086	)		(446,516	)
Equity securities
Sales		36,918			76,388
Purchases		(58,405	)		(178,517	)
Change in payable for securities		41,265			28,465
Purchase of other invested assets		(2,021	)		—
Net change in short-term investments		84,022			(53,747	)
Purchase of property and equipment		(3,571	)		(1,503	)
Net cash provided by (used in) investing activities	$	(99,757	)	$	(181,793	)
Financing activities:
Proceeds of stock issued from employee stock purchase plan	$	1,840		$	1,352
Proceeds of stock issued from exercise of stock options		—			29
Dividends paid		(2,619	)		—
Net cash provided by (used in) financing activities	$	(779	)	$	1,381
Effect of exchange rate on cash	$	(8,869	)	$	—
Change in cash	$	77,614		$	(21,268	)
Cash at beginning of year		69,901			90,751
Cash at end of period	$	147,515		$	69,483
Supplemental information:
Income taxes paid, net	$	24,148		$	28,634
Interest paid	$	7,619		$	7,619
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 term “Parent Company” is 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.  Certain amounts for the prior period have been reclassified to conform with the current period presentation.

Income Taxes

The interim income tax provision has been computed based on our estimated annual Effective tax rate, which represents our best estimate on a year to date basis for the interim period.  As a result, the tax provision for a given quarter equals the difference between the provision recorded cumulatively year to date less the amount recorded cumulatively as of the end of the prior interim period.  Our Effective tax rate for the quarter and year to date differs from the federal tax rate of 35% primarily due to 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 Statements:

• Accounting Standards Update 2015-03 – Interest – Imputation of Interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs, which is 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 is 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),

8

which is  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 on 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.

• Accounting Standards Update 2016-13 – Financial Instruments – Credit Losses (Topic 326) – amends the measurement of credit losses on financial instruments not accounted for at fair value including loans, debt securities, reinsurance receivables and any other financial assets, which will be effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years.

• Accounting Standards Update 2016-15 – Statements of Cash Flows (Topic 230) – Classification of Certain Cash Receipts and Cash Payments amends how certain cash receipts and cash payments are presented in the statement of cash flows to reduce existing diversity in practice.

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 reporting segments: U.S. Insurance, International Insurance (“Int’l Insurance”), 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 (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 reporting 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 and nine months ended September 30, 2016 and 2015 was as follows:

	Three Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	161,722		$	79,761		$	42,527		$	—		$	284,010
Net losses and LAE		(106,320	)		(45,043	)		(21,430	)		—			(172,793	)
Commission expenses		(18,630	)		(15,348	)		(8,951	)		318			(42,611	)
Other operating expenses		(31,517	)		(20,183	)		(4,437	)		—			(56,137	)
Other underwriting income (expense)		240			—			122			(318	)		44
Underwriting profit (loss)	$	5,495		$	(813	)	$	7,831		$	—		$	12,513
Net investment income											19,875			19,875
Net realized gains (losses)											1,586			1,586
Interest expense											(3,859	)		(3,859	)
Other income (loss)											(227	)		(227	)
Income before income taxes	$	5,495		$	(813	)	$	7,831		$	17,375		$	29,888
Income tax (expense) benefit											(7,875	)		(7,875	)
Net income (loss)													$	22,013
Losses and LAE ratio		65.7	%		56.5	%		50.4	%					60.8	%
Commission expense ratio		11.5	%		19.2	%		21.0	%					15.0	%
Other operating expense ratio (2)		19.4	%		25.3	%		10.2	%					19.8	%
Combined ratio		96.6	%		101.0	%		81.6	%					95.6	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Three Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	142,409		$	68,533		$	43,140		$	—		$	254,082
Net losses and LAE		(85,140	)		(39,182	)		(22,224	)		—			(146,546	)
Commission expenses		(15,157	)		(12,780	)		(7,705	)		1,389			(34,253	)
Other operating expenses		(32,948	)		(19,937	)		(3,714	)		—			(56,599	)
Other underwriting income (expense)		1,013			—			395			(1,389	)		19
Underwriting profit (loss)	$	10,177		$	(3,366	)	$	9,892		$	—		$	16,703
Net investment income											17,371			17,371
Net realized gains (losses)											(757	)		(757	)
Interest expense											(3,856	)		(3,856	)
Other income (loss)											(2,537	)		(2,537	)
Income before income taxes	$	10,177		$	(3,366	)	$	9,892		$	10,221		$	26,924
Income tax (expense) benefit											(8,723	)		(8,723	)
Net income (loss)													$	18,201
Losses and LAE ratio		59.8	%		57.2	%		51.5	%					57.7	%
Commission expense ratio		10.6	%		18.6	%		17.9	%					13.5	%
Other operating expense ratio (2)		22.5	%		29.1	%		7.7	%					22.2	%
Combined ratio		92.9	%		104.9	%		77.1	%					93.4	%

(1) - Includes Corporate segment intercompany eliminations.

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

10

	Nine Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	462,446		$	235,602		$	118,312		$	—		$	816,360
Net losses and LAE		(291,260	)		(133,519	)		(68,176	)		—			(492,955	)
Commission expenses		(50,379	)		(47,524	)		(24,188	)		1,200			(120,891	)
Other operating expenses		(96,848	)		(64,997	)		(14,175	)		—			(176,020	)
Other underwriting income (expense)		943			—			374			(1,200	)		117
Underwriting profit (loss)	$	24,902		$	(10,438	)	$	12,147		$	—		$	26,611
Net investment income											59,344			59,344
Net realized gains (losses)											4,993			4,993
Interest expense											(11,575	)		(11,575	)
Other income (loss)											6,679			6,679
Income (loss) before income taxes	$	24,902		$	(10,438	)	$	12,147		$	59,441		$	86,052
Income tax (expense) benefit											(24,917	)		(24,917	)
Net income (loss)													$	61,135
Losses and LAE ratio		63.0	%		56.7	%		57.6	%					60.4	%
Commission expense ratio		10.9	%		20.2	%		20.4	%					14.8	%
Other operating expense ratio (2)		20.7	%		27.5	%		11.7	%					21.5	%
Combined ratio		94.6	%		104.4	%		89.7	%					96.7	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Nine Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate(1)			Total
Net earned premiums	$	410,804		$	197,244		$	124,494		$	—		$	732,542
Net losses and LAE		(247,094	)		(101,236	)		(70,387	)		—			(418,717	)
Commission expenses		(41,777	)		(35,491	)		(23,042	)		1,672			(98,638	)
Other operating expenses		(98,010	)		(54,312	)		(11,975	)		—			(164,297	)
Other underwriting income (expense)		1,330			—			441			(1,672	)		99
Underwriting profit (loss)	$	25,253		$	6,205		$	19,531		$	—		$	50,989
Net investment income											50,219			50,219
Net realized gains (losses)											8,755			8,755
Interest expense											(11,567	)		(11,567	)
Other income (loss)											(4,737	)		(4,737	)
Income (loss) before income taxes	$	25,253		$	6,205		$	19,531		$	42,670		$	93,659
Income tax (expense) benefit											(30,345	)		(30,345	)
Net income (loss)													$	63,314
Losses and LAE ratio		60.1	%		51.3	%		56.5	%					57.2	%
Commission expense ratio		10.2	%		18.0	%		18.5	%					13.5	%
Other operating expense ratio (2)		23.6	%		27.6	%		9.3	%					22.3	%
Combined ratio		93.9	%		96.9	%		84.3	%					93.0	%

(1) - Includes Corporate segment intercompany eliminations.

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

11

Revenue by operating segment for the three and nine months ended September 30, 2016 and 2015 was as follows:

	Three Months Ended September 30, 2016									Three Months Ended September 30, 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	$	40,271	$	(17,636	)	$	22,635	$	25,465	$	35,529	$	(13,865	)	$	21,664	$	24,292		13.3	%		27.2	%		4.5	%		4.8	%
P&C		161,600		(36,011	)		125,589		115,971		154,009		(34,902	)		119,107		104,473		4.9	%		3.2	%		5.4	%		11.0	%
ProfessionalLiability		32,776		(7,712	)		25,064		20,286		29,245		(14,986	)		14,259		13,644		12.1	%		(48.5	%)		75.8	%		48.7	%
Total	$	234,647	$	(61,359	)	$	173,288	$	161,722	$	218,783	$	(63,753	)	$	155,030	$	142,409		7.3	%		(3.8	%)		11.8	%		13.6	%
Int'l Insurance
Marine	$	38,453	$	(12,631	)	$	25,822	$	34,794	$	41,002	$	(10,985	)	$	30,017	$	36,792		(6.2	%)		15.0	%		(14.0	%)		(5.4	%)
P&C		38,077		(15,331	)		22,746		25,584		37,449		(20,034	)		17,415		16,879		1.7	%		(23.5	%)		30.6	%		51.6	%
Professional Liability		27,954		(7,232	)		20,722		19,383		20,337		(6,785	)		13,552		14,862		37.5	%		6.6	%		52.9	%		30.4	%
Total	$	104,484	$	(35,194	)	$	69,290	$	79,761	$	98,788	$	(37,804	)	$	60,984	$	68,533		5.8	%		(6.9	%)		13.6	%		16.4	%
GlobalRe	$	35,799	$	(1,376	)	$	34,423	$	42,527	$	36,491	$	(566	)	$	35,925	$	43,140		(1.9	%)		143.2	%		(4.2	%)		(1.4	%)
Total	$	374,930	$	(97,929	)	$	277,001	$	284,010	$	354,062	$	(102,123	)	$	251,939	$	254,082		5.9	%		(4.1	%)		9.9	%		11.8	%

	Nine Months Ended September 30, 2016									Nine Months Ended September 30, 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	$	129,621	$	(53,823	)	$	75,798	$	73,636	$	118,167	$	(45,177	)	$	72,990	$	74,193		9.7	%		19.1	%		3.8	%		(0.7	%)
P&C		471,532		(103,286	)		368,246		335,342		458,371		(123,765	)		334,606		291,648		2.9	%		(16.5	%)		10.1	%		15.0	%
ProfessionalLiability		88,065		(21,365	)		66,700		53,468		81,559		(42,423	)		39,136		44,963		8.0	%		(49.6	%)		70.4	%		18.9	%
Total	$	689,218	$	(178,474	)	$	510,744	$	462,446	$	658,097	$	(211,365	)	$	446,732	$	410,804		4.7	%		(15.6	%)		14.3	%		12.6	%
Int'l Insurance
Marine	$	151,548	$	(33,274	)	$	118,274	$	109,746	$	149,844	$	(30,933	)	$	118,911	$	114,716		1.1	%		7.6	%		(0.5	%)		(4.3	%)
P&C		145,125		(57,025	)		88,100		70,608		112,014		(60,676	)		51,338		43,112		29.6	%		(6.0	%)		71.6	%		63.8	%
ProfessionalLiability		87,694		(21,776	)		65,918		55,248		68,147		(22,072	)		46,075		39,416		28.7	%		(1.3	%)		43.1	%		40.2	%
Total	$	384,367	$	(112,075	)	$	272,292	$	235,602	$	330,005	$	(113,681	)	$	216,324	$	197,244		16.5	%		(1.4	%)		25.9	%		19.4	%
GlobalRe	$	127,787	$	(7,467	)	$	120,320	$	118,312	$	141,891	$	(5,806	)	$	136,085	$	124,494		(9.9	%)		28.6	%		(11.6	%)		(5.0	%)
Total	$	1,201,372	$	(298,016	)	$	903,356	$	816,360	$	1,129,993	$	(330,852	)	$	799,141	$	732,542		6.3	%		(9.9	%)		13.0	%		11.4	%

NOTE 3.  INVESTMENTS

The following tables set forth our Company’s investments as of September 30, 2016 and December 31, 2015 and include Other-than-temporary-impairment (“OTTI”) securities recognized within Accumulated other comprehensive income (“AOCI”):

	September 30, 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	$	262,030	$	3,691	$	(3,981	)	$	262,320
States, municipalities and political subdivisions		580,324		29,288		(769	)		551,805
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		526,069		11,778		(105	)		514,396
Residential mortgage obligations		27,055		455		(97	)		26,697
Asset-backed securities		288,636		1,503		(458	)		287,591
Commercial mortgage-backed securities		165,405		6,392		(423	)		159,436
Subtotal	$	1,007,165	$	20,128	$	(1,083	)	$	988,120
Corporate bonds		810,898		23,447		(1,354	)		788,805
Total fixed maturities	$	2,660,417	$	76,554	$	(7,187	)	$	2,591,050
Equity securities		342,677		38,538		(1,767	)		305,906
Other invested assets		2,021		—		—			2,021
Short-term investments		134,273		—		—			134,273
Total investments	$	3,139,388	$	115,092	$	(8,954	)	$	3,033,250

12

	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 September 30, 2016 and December 31, 2015, our Company did not have a concentration of greater than 5% of invested assets in a single non-government backed issuer.

During the third quarter of 2016, the Company made investments in certain companies, which are reported as Other invested assets on the Consolidated Balance Sheet and accounted for using the equity method.  Our initial estimate of the net asset value of these investments is the transaction price.  We believe the net asset value to be a practical expedient for the fair value of these investments.

As of September 30, 2016 and December 31, 2015, Fixed maturities for which non-credit OTTI was previously recognized and included in AOCI are now in a net unrealized net 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 September 30, 2016 are shown in the following table:

	September 30, 2016
	Fair		Amortized
amounts in thousands	Value		Cost
Due in one year or less	$	81,849	$	83,551
Due after one year through five years		810,165		799,159
Due after five years through ten years		296,471		281,368
Due after ten years		464,767		438,852
Mortgage-backed and asset-backed securities		1,007,165		988,120
Total	$	2,660,417	$	2,591,050

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

13

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 September 30, 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:

	September 30, 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	$	91,676	$	(969	)	$	19,897	$	(3,012	)	$	111,573	$	(3,981	)
States, municipalities and political subdivisions		49,881		(593	)		9,932		(176	)		59,813		(769	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		52,754		(17	)		13,547		(88	)		66,301		(105	)
Residential mortgage obligations		1,317		(16	)		1,631		(81	)		2,948		(97	)
Asset-backed securities		22,422		(158	)		61,499		(300	)		83,921		(458	)
Commercial mortgage-backed securities		20,864		(38	)		8,854		(385	)		29,718		(423	)
Subtotal	$	97,357	$	(229	)	$	85,531	$	(854	)	$	182,888	$	(1,083	)
Corporate bonds		120,114		(622	)		23,053		(732	)		143,167		(1,354	)
Total fixed maturities	$	359,028	$	(2,413	)	$	138,413	$	(4,774	)	$	497,441	$	(7,187	)
Equity securities		38,050		(1,490	)		4,723		(277	)		42,773		(1,767	)
Total fixed maturities and equity securities	$	397,078	$	(3,903	)	$	143,136	$	(5,051	)	$	540,214	$	(8,954	)

	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 September 30, 2016, there were 177 Fixed maturities and 42 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 September 30, 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 losses for the less than 12 months category for the period ended September 30, 2016 is broadly spread across our common equity portfolio and to a lesser extent, agency and foreign government bonds due to an unfavorable exchange movement. The gross unrealized loss for the less than 12 months category for the period ended 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 September 30, 2016 and December 31, 2015, the largest unrealized loss by a non-government backed issuer in the investment portfolio was $0.4 million and $2.6 million, respectively.

14

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

Our Company reviews the magnitude of a security’s unrealized loss compared to its cost/amortized cost and the length of time that the security has been impaired to determine if an unrealized loss is other-than-temporary.  If warranted as a result of conditions relating to a particular security, our Company will also review securities with declines in fair value resulting from a headline news event involving the issuer, a headline news event involving the asset class, the advice of our external asset managers, or economic events that may impact the issuer to determine if an unrealized loss is other-than-temporary.  The depth of analysis performed is dependent upon the nature and magnitude of the indicators of other-than-temporary impairment present in regards to each impaired security.

For Equity securities, our Company performs a fundamental analysis of the issuer, including an evaluation of the mean analysts’ target price, to assess the likelihood of recovery of our cost basis in the security. Management also assesses the likelihood of future cash flows, dividends and increases to dividends, all of which affect the securities eligibility for our equity strategy and therefore our intent to hold the security.  If an equity security is deemed to be other-than-temporarily-impaired, the cost is written down to fair value with the loss recognized in earnings.

For Fixed maturities, our Company assesses the underlying fundamentals of each issuer to determine if there is a change in the amount or timing of expected cash flows.  Management compares the amortized cost basis to the present value of the revised cash flows using the historical book yield to determine the credit loss portion of impairment which is recognized in earnings.  All non-credit losses where we have the intent and ability to hold the security until recovery are recognized as changes in OTTI losses within AOCI.

Specifically for structured Fixed maturities, our Company analyzes 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, credit impairment is recognized in earnings. 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’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.  

As of September 30, 2016, our Company does not intend to sell, and it is more-likely-than-not that it will not be required to sell any of its securities with unrealized losses before they recover in value.

Our Company had no credit related OTTI losses during the three months ended September 30, 2016.  Our Company had one credit related OTTI loss of $0.2 million in the Fixed maturities portfolio during the nine months ended September 30, 2016.  Our Company had three credit related losses totaling $1.3 million and $1.7 million in the equity portfolio during the three and nine months ended September 30, 2015, respectively.

15

The following table summarizes the cumulative amounts related to our Company’s credit loss portion of the OTTI losses on Fixed maturities for the three and nine months ended September 30, 2016 and 2015:  

	Three Months Ended September 30,					Nine Months Ended September 30,
amounts in thousands	2016			2015		2016			2015
Beginning balance	$	2,511		$	2,361	$	2,361		$	2,361
Additions for credit loss impairments recognized in the    current period on securities not previously impaired		—			—		150			—
Additions for credit loss impairments recognized in the    current period on securities previously impaired		—			—		—			—
Reductions for credit loss impairments previously recognized  on securities sold during the period		(150	)		—		(150	)		—
Ending balance	$	2,361		$	2,361	$	2,361		$	2,361

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

	Three Months Ended September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities	$	17,124		$	15,353		$	50,781		$	45,660
Equity securities		3,540			2,543			10,418			6,383
Short-term investments		70			272			568			604
Total investment income	$	20,734		$	18,168		$	61,767		$	52,647
Investment expenses		(859	)		(797	)		(2,423	)		(2,428	)
Net investment income	$	19,875		$	17,371		$	59,344		$	50,219

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

	Three Months Ended September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities:
Gains	$	1,356		$	484		$	5,200		$	2,889
Losses		(1,221	)		(667	)		(3,086	)		(2,757	)
Fixed maturities, net	$	135		$	(183	)	$	2,114		$	132
Short-term:
Gains	$	128		$	9		$	803		$	109
Losses		(107	)		(120	)		(250	)		(273	)
Short-term, net	$	21		$	(111	)	$	553		$	(164	)
Equity securities:
Gains	$	1,443		$	1,107		$	3,123		$	12,185
Losses		(13	)		(295	)		(647	)		(1,700	)
Equity securities, net	$	1,430		$	812		$	2,476		$	10,485
Net realized gains (losses)	$	1,586		$	518		$	5,143		$	10,453

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.

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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.

Other invested assets are measured at net asset value as a practical expedient for 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 above, 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 September 30, 2016 and December 31, 2015:

	September 30, 2016
amounts in thousands	Level 1		Level 2		Level 3		Fair Value based on net asset value		Total
Fixed maturities:
U.S.  Treasury bonds, agency bonds and    foreign government bonds	$	55,159	$	206,871	$	—	$	—	$	262,030
States, municipalities and political subdivisions		—		580,324		—		—		580,324
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		526,069		—		—		526,069
Residential mortgage obligations		—		27,055		—		—		27,055
Asset-backed securities		—		288,636		—		—		288,636
Commercial mortgage-backed securities		—		165,405		—		—		165,405
Subtotal	$	—	$	1,007,165	$	—	$	—	$	1,007,165
Corporate bonds		—		810,898		—		—		810,898
Total fixed maturities	$	55,159	$	2,605,258	$	—	$	—	$	2,660,417
Equity securities		158,963		183,714		—				342,677
Other invested assets		—		—		—		2,021		2,021
Short-term investments		134,273		—		—		—		134,273
Total assets measured at fair value	$	348,395	$	2,788,972	$	—	$	2,021	$	3,139,388
Senior notes	$	—	$	294,080	$	—	$	—	$	294,080
Total liabilities measured at fair value	$	—	$	294,080	$	—	$	—	$	294,080

	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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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 and nine months ended September 30, 2016 and 2015.

As of September 30, 2016, our Company did not have any Level 3 assets.

NOTE 5. CEDED REINSURANCE

As of September 30, 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 $10.4 million as of September 30, 2016 and $6.9 million as of December 31, 2015. The increase is primarily due to lower expectations of recoveries from a reinsurer.

As of September 30, 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, our 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.  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 and $1.1 million of the incentive for the three and nine months ended September 30, 2016. As of September 30, 2016 and December 31, 2015, our Company has deferred revenue of $5.1 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

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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 nine months ended September 30, 2016, we granted 216,973 stock incentive units at a grant price between $80.98 and $92.56.  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.

NOTE 8. STOCKHOLDERS’ EQUITY

On May 26, 2016, our Board of Directors declared its intention to pay a regular quarterly cash dividend on The Navigators Group, Inc. Common stock.   On July 15, 2016 our Company paid a dividend of $0.09 per share on The Navigators Group, Inc. Common stock to Stockholders of record on June 20, 2016.  On September 30, 2016, our Company paid a dividend of $0.09 per share on The Navigators Group, Inc. Common stock to Stockholders of record on August 19, 2016.  

The declaration and amount of any future dividend will be at the discretion of the Board of Directors, and will depend upon many factors, including financial condition, results of operations, business requirements, regulatory, legal constraints and other factors the Board of Directors deems relevant.

NOTE 9. SUBSEQUENT EVENTS

On November 3, 2016, our Board of Directors declared a cash dividend on The Navigators Group, Inc. Common stock of $0.09  per share, payable on December 29, 2016 to Stockholders of record on November 18, 2016.

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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, Other operating expenses and Other underwriting income (expense) 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 September 30, 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, insurance operating expenses and Other underwriting income (expense), 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 (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”)).

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

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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 term “Parent Company” is 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.

In May 2016, our Company received authorization from the Prudential Regulation Authority and the Financial Conduct Authority for a new U.K. based insurance company, Navigators International Insurance Company Ltd (“NIIC”),which is a wholly-owned direct subsidiary of our Parent Company. We are evaluating operational plans and determining when we will start writing business for NIIC, particularly in light of the announcement that the result of the U.K. referendum held on June 23, 2016 was that a majority voted in favor of the U.K. leaving the European Union (the “E.U.”), commonly referred to as “Brexit”.  See Item 1A. Risk Factors for additional discussion on Brexit.

As a result of Brexit, for the nine months ended September 30, 2016, the Great British pound (“GBP”) exchange rate experienced a significant decline in value against the USD.  As a result, we have recorded realized and unrealized foreign exchange gains in Other income primarily due to a net GBP monetary liability in our foreign, U.S. functional currency subsidiaries.    Additionally, we recorded a foreign currency translation loss in AOCI, primarily due to our GBP portfolio investments in NIIC, a GBP functional currency subsidiary.  These assets are also the principal driver of the foreign exchange effect in our cash accounts.

Financial Highlights – Selected Indicators

	Three Months Ended				Nine Months Ended
amounts in thousands, except per share amounts	September 30, 2016		September 30, 2015		September 30, 2016		September 30, 2015
Results of operations data:
Net earned premiums	$	284,010	$	254,082	$	816,360	$	732,542
Net investment income		19,875		17,371		59,344		50,219
Underwriting profit (loss)		12,513		16,703		26,611		50,989
Net income		22,013		18,201		61,135		63,314
Net income per diluted share	$	1.46	$	1.23	$	4.08	$	4.29

amounts in thousands, except per share amounts	As of September 30, 2016		As of December 31, 2015
Balance sheet data:
Total assets	$	4,897,396	$	4,584,012
Total shareholders' equity	$	1,204,281	$	1,096,148
Book value per share	$	82.71	$	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.

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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.

Results of Operations

The following table presents a summary of our consolidated financial results for the three and nine months ended September 30, 2016 and 2015:

	Three Months Ended September 30,						Nine Months Ended September 30,						%Change
amounts in thousands	2016			2015			2016			2015			QTD			YTD
Gross written premiums	$	374,930		$	354,062		$	1,201,372		$	1,129,993			5.9	%		6.3	%
Ceded written premiums		(97,929	)		(102,123	)		(298,016	)		(330,852	)		(4.1	%)		(9.9	%)
Net written premiums		277,001			251,939			903,356			799,141			9.9	%		13.0	%
Net earned premiums		284,010			254,082			816,360			732,542			11.8	%		11.4	%
Net losses and LAE		(172,793	)		(146,546	)		(492,955	)		(418,717	)		17.9	%		17.7	%
Commission expenses		(42,611	)		(34,253	)		(120,891	)		(98,638	)		24.4	%		22.6	%
Other operating expenses		(56,137	)		(56,599	)		(176,020	)		(164,297	)		(0.8	%)		7.1	%
Other underwriting income (expense)		44			19			117			99			131.6	%		18.2	%
Underwriting profit (loss)	$	12,513		$	16,703		$	26,611		$	50,989			(25.1	%)		(47.8	%)
Net investment income		19,875			17,371			59,344			50,219			14.4	%		18.2	%
Net realized gains (losses)		1,586			(757	)		4,993			8,755		NM				(43.0	%)
Interest expense		(3,859	)		(3,856	)		(11,575	)		(11,567	)		0.1	%		0.1	%
Other income (loss)		(227	)		(2,537	)		6,679			(4,737	)		(91.0	%)	NM
Income (loss) before income taxes	$	29,888		$	26,924		$	86,052		$	93,659			11.0	%		(8.1	%)
Income tax (expense) benefit		(7,875	)		(8,723	)		(24,917	)		(30,345	)		(9.7	%)		(17.9	%)
Net income (loss)	$	22,013		$	18,201		$	61,135		$	63,314			20.9	%		(3.4	%)
Net income per diluted share	$	1.46		$	1.23		$	4.08		$	4.29
Effective tax rate		26.3	%		32.4	%		29.0	%		32.4	%
Losses and LAE ratio		60.8	%		57.7	%		60.4	%		57.2	%
Commission expense ratio		15.0	%		13.5	%		14.8	%		13.5	%
Other operating expense ratio (1)		19.8	%		22.2	%		21.5	%		22.3	%
Combined ratio		95.6	%		93.4	%		96.7	%		93.0	%

NM - Percentage change not meaningful

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

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The following table calculates our Net operating earnings for the three and nine months ended September 30, 2016 and 2015:

	Three Months Ended September 30, 2016									Three Months Ended September 30, 2015									% Change
amounts in thousands	Pre-Tax			Tax			After-Tax			Pre-Tax			Tax			After-Tax			QTD
Net income	$	29,888		$	(7,875	)	$	22,013		$	26,924		$	(8,723	)	$	18,201			20.9	%
Adjustments to Net income:
Realized losses (gains)		(1,586	)		555			(1,031	)		757			(265	)		492		NM
FX losses (gains)		227			(80	)		147			2,451			(858	)		1,593			(90.8	%)
Net operating earnings	$	28,529		$	(7,400	)	$	21,129		$	30,132		$	(9,846	)	$	20,286			4.2	%
Net operating earnings per common share:
Basic							$	1.45								$	1.41
Diluted							$	1.40								$	1.37
	Nine Months Ended September 30, 2016									Nine Months Ended September 30, 2015									% Change
amounts in thousands	Pre-Tax			Tax			After-Tax			Pre-Tax			Tax			After-Tax			YTD
Net income	$	86,052		$	(24,917	)	$	61,135		$	93,659		$	(30,345	)	$	63,314			(3.4	%)
Adjustments to Net income:
Realized losses (gains)		(4,993	)		1,747			(3,246	)		(8,755	)		3,064			(5,691	)		(43.0	%)
FX losses (gains)		(6,679	)		2,337			(4,342	)		4,754			(1,664	)		3,090		NM
Net operating earnings	$	74,380		$	(20,833	)	$	53,547		$	89,658		$	(28,945	)	$	60,713			(11.8	%)
Net operating earnings per common share:
Basic							$	3.69								$	4.22
Diluted							$	3.57								$	4.11

NM - Percentage change not meaningful

Underwriting Profit (Loss)

Underwriting profit was $12.5 million for the three months ended September 30, 2016 comprised of $7.8 million and $5.5 million Underwriting profit from our GlobalRe and U.S. Insurance reporting segments respectively, partially offset by an Underwriting loss of $0.8 million from our Int’l Insurance reporting segment. For the three months ended September 30, 2015, we reported an Underwriting profit of $16.7 million comprised of $10.2 million and $9.9 million Underwriting profit from our U.S. Insurance and GlobalRe reporting segments respectively, partially offset by an Underwriting loss of $3.4 million from our Int’l Insurance reporting segment.  

Underwriting profit was $26.6 million for the nine months ended September 30, 2016, comprised of $24.9 million and $12.1 million Underwriting profit from our U.S. Insurance and GlobalRe reporting segments respectively, partially offset by an Underwriting loss of $10.4 million from our Int’l Insurance reporting segment.  Underwriting profit was $51.0 million for the nine months ended September 30, 2015 comprised of $25.3 million, $19.5 million, and $6.2 million for our U.S. Insurance,  GlobalRe and Int’l Insurance 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.

A major component of our Underwriting profit (loss) is due to Net losses and LAE.  The following tables present the impact of changes in reserves and reinsurance reinstatement premiums (“RRPs”) on our Net losses and LAE ratio for the three and nine months ended September 30, 2016 and 2015 (note: accident year is abbreviated “AY”):

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	Three Months Ended September 30,						Point
	2016			2015			Change
Net losses and LAE ratio, reported		60.8	%		57.7	%		3.1
RRPs		0.1	%		(0.3	%)		0.4
Additional net current AY reserve release/(development)		(4.3	%)		(2.9	%)		(1.4	)
Net prior AY reserve release/(strengthening)		0.4	%		5.5	%		(5.1	)
Net losses and LAE ratio, adjusted		57.0	%		60.0	%		(3.0	)

	Nine Months Ended September 30,						Point
	2016			2015			Change
Net losses and LAE ratio, reported		60.4	%		57.2	%		3.2
RRPs		(0.1	%)		(0.0	%)		(0.1	)
Additional net current AY reserve release/(development)		(4.4	%)		(2.0	%)		(2.4	)
Net prior AY reserve release/(strengthening)		1.4	%		4.6	%		(3.2	)
Net losses and LAE ratio, adjusted		57.3	%		59.8	%		(2.5	)

For the three months ended September 30, 2016, we recorded $1.0 million of net prior AY reserve release, mostly due to $3.1 million and $2.9 million from our GlobalRe and Int’l Insurance reporting segments respectively, partially offset by $4.9 million from our U.S. Insurance reporting segment.  This was offset by $12.3 million of additional net current AY development including $11.5 million from our Int’l Insurance reporting segment and $1.4 million from our GlobalRe reporting segment in response to catastrophic events (“CAT”), primarily the Ecuador Earthquake, slightly offset by $0.7 million of additional net current AY reserve release from our Int’l Insurance reporting segment due to favorable CAT emergence, and favorable RRPs of $0.6 million, mostly from our GlobalRe reporting segment.

For the three months ended September 30, 2015, we recorded $14.1 million of net prior AY reserve releases comprised of $7.1 million, $4.3 million and $2.8 million from our U.S. Insurance, GlobalRe and Int’l Insurance reporting segments, respectively, partially offset by $7.5 million of additional net current AY reserve development mostly from our Int’l Insurance reporting segment and $1.3 million of RRPs.

For the nine months ended September 30, 2016, we recorded $11.6 million of net prior AY reserve release comprised of $5.4 million, $4.5 million and $1.8 million from our Int’l Insurance, GlobalRe and U.S. Insurance reporting segments, respectively.  This was offset by $35.6 million of additional net current AY reserve development, of which $19.0 million was due to CATs, including $11.8 million related to the Alberta Wildfires, $4.3 million due to the Ecuador Earthquake and $2.9 million due to the Taiwan Earthquake, as well as $16.6 million of non-CAT additional net current AY reserve development and $1.7 million of RRPs, mostly from our Int’l Insurance reporting segment.

For the nine months ended September 30, 2015, we recorded $34.0 million of net prior AY reserve releases comprised of $21.3 million, $8.4 million and $4.3 million from our U.S. Insurance, Int’l Insurance and GlobalRe reporting segments, respectively, and $0.2 million of RRPs, partially offset by $15.0 million of additional net current AY reserve development related to large loss activity mostly from our Int’l Insurance and U.S. Insurance reporting segments.

Net Investment Income

Our Net investment income was derived from the following sources:

	Three Months Ended September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities	$	17,124		$	15,353		$	50,781		$	45,660
Equity securities		3,540			2,543			10,418			6,383
Short-term investments		70			272			568			604
Total investment income	$	20,734		$	18,168		$	61,767		$	52,647
Investment expenses		(859	)		(797	)		(2,423	)		(2,428	)
Net investment income	$	19,875		$	17,371		$	59,344		$	50,219

The increase in total Net investment income for the three and nine months ended September 30, 2016 as compared to the same periods in the prior year was primarily due to growth of invested assets, and to a lesser extent 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

24

losses recognized in earnings, for the three months ended September 30, 2016 and 2015, was 2.5%.  The annualized pre-tax yield, excluding Net realized gains and losses and OTTI losses recognized in earnings, for the nine months ended September 30, 2016 and 2015, was 2.6% and 2.4%, respectively.  

As part of our overall investment strategy, we seek to build a tax efficient investment portfolio.  The tax-exempt portfolio was 18.1% of the Fixed maturities portfolio as of September 30, 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 and nine months ended September 30, 2016 and 2015, was 2.8% and 2.6%, respectively.  

OTTI Losses Recognized in Earnings

Our Company had no credit related OTTI losses during the three months ended September 30, 2016.  Our Company had one credit related OTTI loss of $0.2 million in the Fixed maturities portfolio during the nine months ended September 30, 2016.  Our Company had three credit related losses totaling $1.3 million and $1.7 million during the three and nine months ended September 30, 2015, respectively, which were for certain common stocks in the energy sector and aerospace industry that were impacted by global economic events.

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 September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities:
Gains	$	1,356		$	484		$	5,200		$	2,889
Losses		(1,221	)		(667	)		(3,086	)		(2,757	)
Fixed maturities, net	$	135		$	(183	)	$	2,114		$	132
Short-term:
Gains	$	128		$	9		$	803		$	109
Losses		(107	)		(120	)		(250	)		(273	)
Short-term, net	$	21		$	(111	)	$	553		$	(164	)
Equity securities:
Gains	$	1,443		$	1,107		$	3,123		$	12,185
Losses		(13	)		(295	)		(647	)		(1,700	)
Equity securities, net	$	1,430		$	812		$	2,476		$	10,485
Net realized gains (losses)	$	1,586		$	518		$	5,143		$	10,453

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 September 30, 2016 are primarily due to the sale of common equity securities and government bonds, partially offset by foreign currency losses on our Canadian portfolio. Net realized gains of $5.1 million for the nine months ended September 30, 2016 are primarily due to the sale of government, municipal and Corporate bonds, partially offset by foreign currency losses on our Canadian portfolio.  Net realized gains of $0.5 million and $10.5 million for the three and nine months ended September 30, 2015, respectively, are primarily due to the sale of common equities.  Realized losses for the three and nine months ended September 30, 2015 in the Fixed maturities portfolio are primarily driven by foreign currency losses on our Canadian portfolio.

Interest Expense

Interest expense was $3.9 million and $11.6 million for three and nine months ended September 30, 2016, respectively, 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 and nine months ended September 30, 2016 was a $0.2 million loss and a $6.7 million gain, respectively, and primarily consists of realized and unrealized foreign exchange gains and losses.  The year to date foreign exchange gains are mostly driven by the strengthening of the USD against the GBP.  

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Income Taxes

We recorded an Effective tax rate of 26.3% and 29.0% for the three and nine months ended September 30, 2016, respectively, compared to 32.4% for the same periods in 2015.  The decreases of 6.1 and 3.4 points, for the three and nine months ended September 30, 2016, respectively, is mostly 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 interim 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.

Segment Results

The following tables summarize our Consolidated Financial Results by reporting segment for the three and nine months ended September 30, 2016 and 2015:

	Three Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	161,722		$	79,761		$	42,527		$	—		$	284,010
Net losses and LAE		(106,320	)		(45,043	)		(21,430	)		—			(172,793	)
Commission expenses		(18,630	)		(15,348	)		(8,951	)		318			(42,611	)
Other operating expenses		(31,517	)		(20,183	)		(4,437	)		—			(56,137	)
Other underwriting income (expense)		240			—			122			(318	)		44
Underwriting profit (loss)	$	5,495		$	(813	)	$	7,831		$	—		$	12,513
Net investment income											19,875			19,875
Net realized gains (losses)											1,586			1,586
Interest expense											(3,859	)		(3,859	)
Other income (loss)											(227	)		(227	)
Income before income taxes	$	5,495		$	(813	)	$	7,831		$	17,375		$	29,888
Income tax (expense) benefit											(7,875	)		(7,875	)
Net income (loss)													$	22,013
Losses and LAE ratio		65.7	%		56.5	%		50.4	%					60.8	%
Commission expense ratio		11.5	%		19.2	%		21.0	%					15.0	%
Other operating expense ratio (2)		19.4	%		25.3	%		10.2	%					19.8	%
Combined ratio		96.6	%		101.0	%		81.6	%					95.6	%

(1) - Includes Corporate segment intercompany eliminations.

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

26

	Three Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	142,409		$	68,533		$	43,140		$	—		$	254,082
Net losses and LAE		(85,140	)		(39,182	)		(22,224	)		—			(146,546	)
Commission expenses		(15,157	)		(12,780	)		(7,705	)		1,389			(34,253	)
Other operating expenses		(32,948	)		(19,937	)		(3,714	)		—			(56,599	)
Other underwriting income (expense)		1,013			—			395			(1,389	)		19
Underwriting profit (loss)	$	10,177		$	(3,366	)	$	9,892		$	—		$	16,703
Net investment income											17,371			17,371
Net realized gains (losses)											(757	)		(757	)
Interest expense											(3,856	)		(3,856	)
Other income (loss)											(2,537	)		(2,537	)
Income before income taxes	$	10,177		$	(3,366	)	$	9,892		$	10,221		$	26,924
Income tax (expense) benefit											(8,723	)		(8,723	)
Net income (loss)													$	18,201
Losses and LAE ratio		59.8	%		57.2	%		51.5	%					57.7	%
Commission expense ratio		10.6	%		18.6	%		17.9	%					13.5	%
Other operating expense ratio (2)		22.5	%		29.1	%		7.7	%					22.2	%
Combined ratio		92.9	%		104.9	%		77.1	%					93.4	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Nine Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	462,446		$	235,602		$	118,312		$	—		$	816,360
Net losses and LAE		(291,260	)		(133,519	)		(68,176	)		—			(492,955	)
Commission expenses		(50,379	)		(47,524	)		(24,188	)		1,200			(120,891	)
Other operating expenses		(96,848	)		(64,997	)		(14,175	)		—			(176,020	)
Other underwriting income (expense)		943			—			374			(1,200	)		117
Underwriting profit (loss)	$	24,902		$	(10,438	)	$	12,147		$	—		$	26,611
Net investment income											59,344			59,344
Net realized gains (losses)											4,993			4,993
Interest expense											(11,575	)		(11,575	)
Other income (loss)											6,679			6,679
Income (loss) before income taxes	$	24,902		$	(10,438	)	$	12,147		$	59,441		$	86,052
Income tax (expense) benefit											(24,917	)		(24,917	)
Net income (loss)													$	61,135
Losses and LAE ratio		63.0	%		56.7	%		57.6	%					60.4	%
Commission expense ratio		10.9	%		20.2	%		20.4	%					14.8	%
Other operating expense ratio (2)		20.7	%		27.5	%		11.7	%					21.5	%
Combined ratio		94.6	%		104.4	%		89.7	%					96.7	%

(1) - Includes Corporate segment intercompany eliminations.

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

27

	Nine Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate(1)			Total
Net earned premiums	$	410,804		$	197,244		$	124,494		$	—		$	732,542
Net losses and LAE		(247,094	)		(101,236	)		(70,387	)		—			(418,717	)
Commission expenses		(41,777	)		(35,491	)		(23,042	)		1,672			(98,638	)
Other operating expenses		(98,010	)		(54,312	)		(11,975	)		—			(164,297	)
Other underwriting income (expense)		1,330			—			441			(1,672	)		99
Underwriting profit (loss)	$	25,253		$	6,205		$	19,531		$	—		$	50,989
Net investment income											50,219			50,219
Net realized gains (losses)											8,755			8,755
Interest expense											(11,567	)		(11,567	)
Other income (loss)											(4,737	)		(4,737	)
Income (loss) before income taxes	$	25,253		$	6,205		$	19,531		$	42,670		$	93,659
Income tax (expense) benefit											(30,345	)		(30,345	)
Net income (loss)													$	63,314
Losses and LAE ratio		60.1	%		51.3	%		56.5	%					57.2	%
Commission expense ratio		10.2	%		18.0	%		18.5	%					13.5	%
Other operating expense ratio (2)		23.6	%		27.6	%		9.3	%					22.3	%
Combined ratio		93.9	%		96.9	%		84.3	%					93.0	%

(1) - Includes Corporate segment intercompany eliminations.

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

U.S. Insurance

The following tables summarize our Underwriting profit (loss) by operating segment for our U.S. Insurance reporting segment for the three and nine months ended September 30, 2016 and 2015:

	U.S. Insurance
	Three Months Ended September 30, 2016
amounts in thousands	Marine			P&C			Professional Liability			Total			%Change Total
Gross written premiums	$	40,271		$	161,600		$	32,776		$	234,647			7.3	%
Ceded written premiums		(17,636	)		(36,011	)		(7,712	)		(61,359	)		(3.8	%)
Net written premiums		22,635			125,589			25,064			173,288			11.8	%
Net earned premiums	$	25,465		$	115,971		$	20,286		$	161,722			13.6	%
Net losses and LAE		(14,974	)		(74,129	)		(17,217	)		(106,320	)		24.9	%
Commission expenses		(2,117	)		(13,664	)		(2,849	)		(18,630	)		22.9	%
Other operating expenses		(6,767	)		(19,997	)		(4,753	)		(31,517	)		(4.3	%)
Other underwriting income (expense)		126			104			10			240			(76.3	%)
Underwriting profit (loss)	$	1,733		$	8,285		$	(4,523	)	$	5,495			(46.0	%)
Losses and LAE ratio		58.8	%		63.9	%		84.9	%		65.7	%
Commission expense ratio		8.3	%		11.8	%		14.0	%		11.5	%
Other operating expense ratio (1)		26.1	%		17.2	%		23.4	%		19.4	%
Combined ratio		93.2	%		92.9	%		122.3	%		96.6	%

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

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	U.S. Insurance
	Three Months Ended September 30, 2015
amounts in thousands	Marine			P&C			Professional Liability			Total
Gross written premiums	$	35,529		$	154,009		$	29,245		$	218,783
Ceded written premiums		(13,865	)		(34,902	)		(14,986	)		(63,753	)
Net written premiums		21,664			119,107			14,259			155,030
Net earned premiums	$	24,292		$	104,473		$	13,644		$	142,409
Net losses and LAE		(7,349	)		(69,054	)		(8,737	)		(85,140	)
Commission expenses		(2,412	)		(11,711	)		(1,034	)		(15,157	)
Other operating expenses		(6,754	)		(20,581	)		(5,613	)		(32,948	)
Other underwriting income (expense)		214			735			64			1,013
Underwriting profit (loss)	$	7,991		$	3,862		$	(1,676	)	$	10,177
Losses and LAE ratio		30.3	%		66.1	%		64.0	%		59.8	%
Commission expense ratio		9.9	%		11.2	%		7.6	%		10.6	%
Other operating expense ratio (1)		26.9	%		19.0	%		40.7	%		22.5	%
Combined ratio		67.1	%		96.3	%		112.3	%		92.9	%

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

	U.S. Insurance
	Nine Months Ended September 30, 2016
amounts in thousands	Marine			P&C			Professional Liability			Total			%Change Total
Gross written premiums	$	129,621		$	471,532		$	88,065		$	689,218			4.7	%
Ceded written premiums		(53,823	)		(103,286	)		(21,365	)		(178,474	)		(15.6	%)
Net written premiums		75,798			368,246			66,700			510,744			14.3	%
Net earned premiums	$	73,636		$	335,342		$	53,468		$	462,446			12.6	%
Net losses and LAE		(35,448	)		(217,898	)		(37,914	)		(291,260	)		17.9	%
Commission expenses		(5,775	)		(38,337	)		(6,267	)		(50,379	)		20.6	%
Other operating expenses		(20,956	)		(61,568	)		(14,324	)		(96,848	)		(1.2	%)
Other underwriting income (expense)		357			550			36			943			(29.1	%)
Underwriting profit (loss)	$	11,814		$	18,089		$	(5,001	)	$	24,902			(1.4	%)
Losses and LAE ratio		48.1	%		65.0	%		70.9	%		63.0	%
Commission expense ratio		7.8	%		11.4	%		11.7	%		10.9	%
Other operating expense ratio (1)		28.1	%		18.2	%		26.8	%		20.7	%
Combined ratio		84.0	%		94.6	%		109.4	%		94.6	%

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

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	U.S. Insurance
	Nine Months Ended September 30, 2015
amounts in thousands	Marine			P&C			Professional Liability			Total
Gross written premiums	$	118,167		$	458,371		$	81,559		$	658,097
Ceded written premiums		(45,177	)		(123,765	)		(42,423	)		(211,365	)
Net written premiums		72,990			334,606			39,136			446,732
Net earned premiums	$	74,193		$	291,648		$	44,963		$	410,804
Net losses and LAE		(28,952	)		(194,910	)		(23,232	)		(247,094	)
Commission expenses		(8,873	)		(29,018	)		(3,886	)		(41,777	)
Other operating expenses		(20,129	)		(60,976	)		(16,905	)		(98,010	)
Other underwriting income (expense)		389			876			65			1,330
Underwriting profit (loss)	$	16,628		$	7,620		$	1,005		$	25,253
Losses and LAE ratio		39.0	%		66.8	%		51.7	%		60.1	%
Commission expense ratio		12.0	%		9.9	%		8.6	%		10.2	%
Other operating expense ratio (1)		26.6	%		20.7	%		37.5	%		23.6	%
Combined ratio		77.6	%		97.4	%		97.8	%		93.9	%

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

Gross Written Premiums

Gross written premiums increased $15.9 million for the three months ended September 30, 2016 compared to the same period in 2015, primarily driven by a $7.6 million increase in our U.S. P&C operating segment due to new business production and higher renewal retention in our Auto, Property, Life Sciences and Commercial Excess Casualty products, partially offset by declines in our Specialty Excess Casualty product and Primary Casualty division as a result of difficult market conditions.  In addition, our U.S. Marine operating segment increased $4.7 million due to higher renewal retention within our Marine Liability product and new business production within our Inland Marine product, and our U.S. Professional Liability operating segment increased $3.5 million due to new business production within our D&O division.

Gross written premiums increased $31.1 million for the nine months ended September 30, 2016 compared to the same period in 2015 driven by a $13.2 million increase in our U.S. P&C operating segment due to new business production from our Property, Auto, Life Sciences and Commercial Excess Casualty products, partially offset by declines in our Specialty Excess Casualty product and Primary Casualty division as a result of difficult market conditions.  Our U.S. Marine operating segment increased $11.5 million due to new business production within our Cargo and Craft products, and our U.S. Professional Liability operating segment increased $6.5 million due to new business production and increased renewals within our D&O division.  

Average renewal premium rates for our U.S. Insurance reporting segment for the three months ended September 30, 2016 increased 0.2%, driven by 0.9% and 0.5% increases within our U.S. Professional Liability and U.S. P&C operating segments, respectively, partially offset by a 1.5% decrease in our U.S. Marine operating segment. The decrease in rates within our U.S. Marine operating segment was offset by new business production and higher renewal retention.

For the nine months ended September, 30, 2016, our average renewal premium rates were flat at 0.0% due to offsetting trends in rate changes across operating segments.  Our U.S. Marine operating segment started off the year strong, but has endured a steady decline in rates, reporting 0.2% positive rate change for the year.  Alternatively, our U.S. P&C and U.S. Professional Liability operating segments began the year with unfavorable rate changes, but have steadily improved during the year resulting in only 0.1% negative rate change in our U.S. P&C operating segment while rates are flat within our U.S. Professional Liability operating segment.

Ceded Written Premiums

Ceded written premiums decreased $2.4 million for the three months ended September 30, 2016 compared to the same period in 2015, primarily driven by a decrease within our U.S. Professional Liability operating segment due to the nonrenewal of our E&O proportional reinsurance treaty in the fourth quarter 2015 and the year over year effect of the third quarter 2015 RRP’s of $1.4 million in our U.S. P&C operating segment. This was partially offset by an increase within our U.S. Marine operating segment due to increases in our proportional reinsurance coverage across certain product lines.

30

Ceded written premiums decreased $32.9 million for the nine months ended September 30, 2016 compared to the same period in 2015, primarily due to a reduction on our Excess Casualty and Professional Liability risks in the third quarter 2015, the nonrenewal of our E&O proportional reinsurance treaty in the fourth quarter 2015 and the year over year effect of the third quarter 2015 RRP’s of $1.6 million and $1.4 million in our U.S. Marine and P&C operating segments.  This was partially offset by an increase in our U.S. Marine operating segment due to increases in our proportional reinsurance coverages mentioned above.

Net Earned Premiums

Net earned premiums increased $19.3 million and $51.6 million for the three and nine months ended September 30, 2016, respectively, compared to the same periods in 2015, primarily due to growth in Gross written premiums and a reduced level of proportional reinsurance across our U.S. P&C and U.S. Professional Liability operating segments.

Net Losses and LAE

The Net losses and LAE reserves as of September 30, 2016 and December 31, 2015 are as follows:

	U.S. Insurance
	As of  September 30, 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	$	58,332	$	188,495	$	29,482	$	276,309	$	68,677	$	170,988	$	42,546	$	282,211		(2.1	%)
IBNR reserves		53,462		584,581		63,105		701,148		55,408		514,777		60,528		630,713		11.2	%
Total	$	111,794	$	773,076	$	92,587	$	977,457	$	124,085	$	685,765	$	103,074	$	912,924		7.1	%

The following tables present the impact of RRPs and reserve development on our Net losses and LAE ratio for the three and nine months ended September 30, 2016:

	U.S. Insurance
	Three Months Ended September 30, 2016												Three Months Ended September 30, 2015
							Professional												Professional						Point
	Marine			P&C			Liability			Total			Marine			P&C			Liability			Total			Change
Net losses and LAE ratio, reported		58.8	%		63.9	%		84.9	%		65.7	%		30.3	%		66.1	%		64.0	%		59.8	%		5.9
RRPs		(0.0	%)		0.0	%		0.0	%		0.0	%		(0.1	%)		(0.9	%)		0.0	%		(0.7	%)		0.7
Additional net current AY reserve release/(development)		(0.1	%)		(0.1	%)		0.0	%		(0.1	%)		0.0	%		0.0	%		0.0	%		0.0	%		(0.1	)
Net prior AY reserve release/(strengthening)		0.1	%		0.1	%		(24.8	%)		(3.0	%)		28.9	%		0.0	%		0.0	%		4.9	%		(7.9	)
Net losses and LAE ratio, adjusted		58.8	%		63.9	%		60.1	%		62.6	%		59.1	%		65.2	%		64.0	%		64.0	%		(1.4	)

	U.S. Insurance
	Nine Months Ended September 30, 2016												Nine Months Ended September 30, 2015
							Professional												Professional						Point
	Marine			P&C			Liability			Total			Marine			P&C			Liability			Total			Change
Net losses and LAE ratio, reported		48.1	%		65.0	%		70.9	%		63.0	%		39.0	%		66.8	%		51.7	%		60.1	%		2.9
RRPs		(0.2	%)		0.0	%		0.0	%		(0.0	%)		(0.8	%)		(0.3	%)		0.0	%		(0.4	%)		0.4
Additional net current AY reserve release/(development)		(0.0	%)		(0.5	%)		0.0	%		(0.3	%)		0.0	%		(1.7	%)		0.0	%		(1.2	%)		0.9
Net prior AY reserve release/(strengthening)		10.5	%		(0.3	%)		(9.4	%)		0.4	%		19.9	%		0.3	%		11.5	%		5.1	%		(4.7	)
Net losses and LAE ratio, adjusted		58.4	%		64.2	%		61.5	%		63.1	%		58.1	%		65.1	%		63.2	%		63.6	%		(0.5	)

For the three months ended September 30, 2016, our U.S. Insurance reporting segment recorded $4.9 million of net prior AY reserve strengthening, primarily due to $5.0 million of strengthening from our D&O division within our U.S. Professional Liability operating segment comprised of $3.5 million of large loss activity and $1.5 million of bad debt expense due to lower expectations of recoveries from a large reinsurer.  

For the three months ended September 30, 2015, our U.S. Insurance reporting segment recorded $7.1 million of net prior AY reserve releases from our U.S. Marine operating segment due to favorable loss emergence.

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For the nine months ended September 30, 2016, our U.S. Insurance reporting segment recorded $1.8 million of net prior AY reserve releases, comprised of $7.7 million from our U.S. Marine operating segment due to favorable loss emergence, mostly offset by net prior AY reserve strengthening of $5.0 million from our U.S. Professional Liability operating segment due to large loss activity and bad debt expense due to lower expectations of recoveries from a large reinsurer within our D&O division, $1.0 million from our U.S. P&C operating segment primarily due to large loss activity within our Primary Casualty division and $0.4 million of RRP’s from our U.S. Marine operating segment.

For the nine months ended September 30, 2015, our U.S. Insurance reporting segment recorded $21.3 million of net prior AY reserve releases, primarily driven by $15.1 million and $5.2 million of reserve releases from our U.S. Marine and U.S. Professional Liability operating segments, respectively, due to favorable loss emergence and to a lesser extent, a $1.5 million release of provision for uncollectible reinsurance due to payments of outstanding balances from one of our large reinsurers.

The changes in Net losses and LAE ratio, as adjusted, are primarily due to the mix of business earned in the applicable periods as well as changes in estimates on ultimate losses for certain divisions and products.

Commission Expenses

The Commission expense ratio for the three and nine months ended September 30, 2016 increased 0.9 and 0.7 points, respectively, as compared to the same periods in 2015, primarily driven by a reduction in ceded commission benefit within our U.S. Professional Liability and U.S. P&C operating segments resulting from the nonrenewal of a proportional reinsurance treaty that supported our E&O division and a reduction in our proportional reinsurance that supports Excess Casualty, Life Sciences, and Environmental risks.   This was partially offset by increases in ceding commission within our U.S. Marine operating segment resulting from increases in proportional reinsurance coverage across certain product lines.

Other Operating Expenses

Other operating expenses for the three and nine months ended September 30, 2016 decreased $1.4 million and $1.2 million as compared to the same periods in 2015 mostly due to decreases in non-recurring project specific information technology and professional fee expenditures.

Int’l Insurance

The following tables summarize our Underwriting profit (loss) by operating segment for our Int’l Insurance reporting segment for the three and nine months ended September 30, 2016 and 2015: 

	Int'l Insurance
	Three Months Ended September 30, 2016
amounts in thousands	Marine			P&C			Professional Liability			Total			%Change Total
Gross written premiums	$	38,453		$	38,077		$	27,954		$	104,484			5.8	%
Ceded written premiums		(12,631	)		(15,331	)		(7,232	)		(35,194	)		(6.9	%)
Net written premiums		25,822			22,746			20,722			69,290			13.6	%
Net earned premiums	$	34,794		$	25,584		$	19,383		$	79,761			16.4	%
Net losses and LAE		(17,289	)		(16,080	)		(11,674	)		(45,043	)		15.0	%
Commission expenses		(8,358	)		(3,502	)		(3,488	)		(15,348	)		20.1	%
Other operating expenses		(7,654	)		(7,913	)		(4,616	)		(20,183	)		1.2	%
Other underwriting income (expense)		—			—			—			—		NM
Underwriting profit (loss)	$	1,493		$	(1,911	)	$	(395	)	$	(813	)		(75.8	%)
Losses and LAE ratio		49.7	%		62.8	%		60.2	%		56.5	%
Commission expense ratio		24.0	%		13.7	%		18.0	%		19.2	%
Other operating expense ratio (1)		22.0	%		31.0	%		23.8	%		25.3	%
Combined ratio		95.7	%		107.5	%		102.0	%		101.0	%

NM - Percentage change not meaningful

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

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	Int'l Insurance
	Three Months Ended September 30, 2015
amounts in thousands	Marine			P&C			Professional Liability			Total
Gross written premiums	$	41,002		$	37,449		$	20,337		$	98,788
Ceded written premiums		(10,985	)		(20,034	)		(6,785	)		(37,804	)
Net written premiums		30,017			17,415			13,552			60,984
Net earned premiums	$	36,792		$	16,879		$	14,862		$	68,533
Net losses and LAE		(23,002	)		(8,051	)		(8,129	)		(39,182	)
Commission expenses		(8,227	)		(2,779	)		(1,774	)		(12,780	)
Other operating expenses		(8,233	)		(6,604	)		(5,100	)		(19,937	)
Other underwriting income (expense)		—			—			—			—
Underwriting profit (loss)	$	(2,670	)	$	(555	)	$	(141	)	$	(3,366	)
Losses and LAE ratio		62.5	%		47.7	%		54.7	%		57.2	%
Commission expense ratio		22.4	%		16.5	%		11.9	%		18.6	%
Other operating expense ratio (1)		22.4	%		39.1	%		34.4	%		29.1	%
Combined ratio		107.3	%		103.3	%		101.0	%		104.9	%

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

	Int'l Insurance
	Nine Months Ended September 30, 2016
amounts in thousands	Marine			P&C			Professional Liability			Total			% Change Total
Gross written premiums	$	151,548		$	145,125		$	87,694		$	384,367			16.5	%
Ceded written premiums		(33,274	)		(57,025	)		(21,776	)		(112,075	)		(1.4	%)
Net written premiums		118,274			88,100			65,918			272,292			25.9	%
Net earned premiums	$	109,746		$	70,608		$	55,248		$	235,602			19.4	%
Net losses and LAE		(54,398	)		(49,174	)		(29,947	)		(133,519	)		31.9	%
Commission expenses		(26,124	)		(11,427	)		(9,973	)		(47,524	)		33.9	%
Other operating expenses		(24,794	)		(25,686	)		(14,517	)		(64,997	)		19.7	%
Other underwriting income (expense)		—			—			—			—		NM
Underwriting profit (loss)	$	4,430		$	(15,679	)	$	811		$	(10,438	)	NM
Losses and LAE ratio		49.6	%		69.6	%		54.2	%		56.7	%
Commission expense ratio		23.8	%		16.2	%		18.1	%		20.2	%
Other operating expense ratio (1)		22.6	%		36.4	%		26.2	%		27.5	%
Combined ratio		96.0	%		122.2	%		98.5	%		104.4	%

NM - Percentage change not meaningful

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

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	Int'l Insurance
	Nine Months Ended September 30, 2015
amounts in thousands	Marine			P&C			Professional Liability			Total
Gross written premiums	$	149,844		$	112,014		$	68,147		$	330,005
Ceded written premiums		(30,933	)		(60,676	)		(22,072	)		(113,681	)
Net written premiums		118,911			51,338			46,075			216,324
Net earned premiums	$	114,716		$	43,112		$	39,416		$	197,244
Net losses and LAE		(63,945	)		(17,015	)		(20,276	)		(101,236	)
Commission expenses		(26,912	)		(3,961	)		(4,618	)		(35,491	)
Other operating expenses		(21,677	)		(18,754	)		(13,881	)		(54,312	)
Other underwriting income (expense)		—			—			—			—
Underwriting profit (loss)	$	2,182		$	3,382		$	641		$	6,205
Losses and LAE ratio		55.7	%		39.5	%		51.4	%		51.3	%
Commission expense ratio		23.5	%		9.2	%		11.7	%		18.0	%
Other operating expense ratio (1)		18.9	%		43.5	%		35.3	%		27.6	%
Combined ratio		98.1	%		92.2	%		98.4	%		96.9	%

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

Gross Written Premiums

Gross written premiums increased $5.7 million for the three months ended September 30, 2016 compared to the same period in 2015, driven by growth in our Int’l Professional Liability operating segment and to a lesser extent our Int’l P&C operating segment. Our Int’l Professional Liability operating segment has increased by $7.6 million, primarily driven by increases in our E&O and D&O divisions including growth of $0.8 million from our European offices. Our Int’l P&C operating segment has increased by $0.6 million primarily driven by growth in our Property and our new Political Violence & Terror (“PV&T) products offset by a decline in our Energy & Engineering division. Our Int’l Marine operating segment decreased by $2.5 million due to decreases in our Marine Liability and Transport products partially offset by growth in our Hull and Cargo products.

Gross written premiums increased $54.4 million for the nine months ended September 30, 2016 compared to the same period in 2015, driven by growth in all of our Int’l Insurance reporting segments. Our Int’l P&C operating segment has increased by $33.1 million mainly due to continued growth in our Property and Excess Casualty divisions as well as our new PV&T product. Our Int’l Professional Liability operating segment has increased by $19.6 million mainly driven by increased premium from our D&O and E&O divisions. Our Int’l Marine operating segment increased by $1.7 million mainly driven by growth in our Cargo and Hull products and growth from new broker facilities business offset by a decrease in our Marine Liability and Protection and Indemnity (“P&I”) products.

Average renewal premium rates for our Int’l Insurance reporting segment for the three and nine months ended September 30, 2016 decreased 3.1% and 3.9%, respectively. The decline for the three months was driven by decreases of 3.6%, 3.3% and 2.5% in our Int’l P&C, Int’l Professional Liability and Int’l Marine operating segments, respectively. The decline for the nine months is driven by decreases of 7.7%, 3.6% and 1.6% in our Int’l P&C, Int’l Professional Liability and Int’l Marine operating segments, respectively.

Ceded Written Premiums

Ceded written premiums decreased $2.6 million and $1.6 million for the three and nine months ended September 30, 2016 respectively, compared to the same periods in 2015. Our Ceded written premium decrease for the three months ended September 30, 2016 is primarily driven by our Int’l P&C operating segment, where we decreased cession percentages on our proportional reinsurance programs, compounded by the decrease in our Energy & Engineering division Gross written premium, which is subject to reinsurance and the increase in Gross written premiums from our Property and Excess Casualty divisions which attract lower levels of ceded reinsurance.  These impacts are partially offset by $2.0 million of additional ceded premium in our P&I product in our Int’l Marine operating segment.

Our Ceded written premium decrease for nine months ended September 30, 2016 is primarily driven by reductions in our proportional reinsurance programs, most notably in our Int’l P&C and our Int’l Professional Liability operating segments.  This impact is offset by $2.2 million of RRPs of which $1.8 million is from our Int’l P&C operating segment due to losses from the Alberta Wildfires as

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compared to prior year, which reflected a $2.0 million RRP reversal due to favorable development on prior year CAT event loss reserves.  

Net Earned Premiums

Net earned premiums increased $11.2 million and $38.4 million for the three and nine months ended September 30, 2016, respectively, compared to the same periods in 2015, driven by the continued growth in our Int’l Professional Liability operating segment, more specifically within our E&O and D&O divisions. Our Int’l P&C operating segment saw growth in our Property and Excess Casualty divisions and from our new PV&T product partially offset by the RRPs noted above. This growth has been offset by our Int’l Marine operating segment which experienced decreases in our Marine Liability and P&I products partially offset by an increase in our Cargo and Hull products.

Net Losses and LAE

The Net losses and LAE reserves as of September 30, 2016 and December 31, 2015 are as follows:

	Int'l Insurance
	As of  September 30, 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	$	175,133	$	58,360	$	27,635	$	261,128	$	167,157	$	40,313	$	19,583	$	227,053		15.0	%
IBNR reserves		42,824		20,414		65,947		129,185		61,409		19,735		63,229		144,373		(10.5	%)
Total	$	217,957	$	78,774	$	93,582	$	390,313	$	228,566	$	60,048	$	82,812	$	371,426		5.1	%

The following tables present the impact of RRPs and reserve development on our Net losses and LAE ratio for three and nine months ended September 30, 2016 and 2015:

	Int'l Insurance
	Three Months Ended September 30, 2016												Three Months Ended September 30, 2015
							Professional												Professional						Point
	Marine			P&C			Liability			Total			Marine			P&C			Liability			Total			Change
Net losses and LAE ratio, reported		49.7	%		62.8	%		60.2	%		56.5	%		62.5	%		47.7	%		54.7	%		57.2	%		(0.7	)
RRPs		0.0	%		0.2	%		0.0	%		0.1	%		0.1	%		(0.0	%)		0.0	%		0.0	%		0.1
Additional net current AY reserve release/(development)		(24.1	%)		(9.6	%)		0.0	%		(13.6	%)		(19.0	%)		0.0	%		0.0	%		(10.2	%)		(3.4	)
Net prior AY reserve release/(strengthening)		23.2	%		(12.1	%)		(10.9	%)		3.6	%		9.6	%		(4.4	%)		0.0	%		4.1	%		(0.5	)
Net losses and LAE ratio, adjusted		48.8	%		41.3	%		49.3	%		46.6	%		53.2	%		43.3	%		54.7	%		51.1	%		(4.5	)

	Int'l Insurance
	Nine Months Ended September 30, 2016												Nine Months Ended September 30, 2015
							Professional												Professional						Point
	Marine			P&C			Liability			Total			Marine			P&C			Liability			Total			Change
Net losses and LAE ratio, reported		49.6	%		69.6	%		54.2	%		56.7	%		55.7	%		39.5	%		51.4	%		51.3	%		5.4
RRPs		(0.2	%)		(1.7	%)		0.0	%		(0.5	%)		0.9	%		0.3	%		0.0	%		0.5	%		(1.0	)
Additional net current AY reserve release/(development)		(9.1	%)		(21.4	%)		0.0	%		(10.7	%)		(8.4	%)		0.0	%		0.0	%		(4.9	%)		(5.8	)
Net prior AY reserve release/(strengthening)		10.5	%		(5.6	%)		(3.8	%)		2.3	%		5.3	%		3.7	%		2.1	%		4.3	%		(2.0	)
Net losses and LAE ratio, adjusted		50.8	%		40.9	%		50.4	%		47.8	%		53.5	%		43.5	%		53.5	%		51.2	%		(3.4	)

For the three months ended September 30, 2016, our Int’l Insurance reporting segment recorded $10.8 million of net current AY reserve strengthening driven by $8.4 million from our Int’l Marine operating segment of which $7.9 million relates to a satellite loss and to a lesser extent our Int’l P&C operating segment recorded $2.4 million driven by increased weather loss activity in our Property Division.  Our Int’l Insurance reporting segment recorded $2.9 million of net prior AY reserve releases, driven by $8.1 million from our Int’l Marine operating segment due to favorable loss emergence. This has been partially offset by our Int’l P&C operating segment which recorded $3.2 million of net prior AY strengthening due to $7.7 million due to increased weather loss activity in our Property Division offset by favorable loss emergence in our Offshore Energy product of $4.5 million. Our Int’l Professional Liability operating segment increased by $1.9 million for bad debt expense due to lower expectations of recoveries from a large reinsurer.

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For the three months ended September 30, 2015, our Int’l Insurance reporting segment recorded $7.0 million of net current AY reserve strengthening from our Int’l Marine operating segment driven by our P&I product experiencing adverse loss development. In addition $2.8 million of net prior AY reserve releases were recorded, primarily driven by $3.5 million from our Int’l Marine operating segment due to favorable loss emergence partially offset by $0.7 million net prior AY reserve strengthening in our Int’l P&C operating segment.

For the nine months ended September 30, 2016, our Int’l Insurance reporting segment recorded $25.5 million of net current AY reserve development, mostly comprised of CAT losses of $10.4 million, comprised of the Taiwan Earthquake, Ecuador Earthquake and Alberta Wildfires as well as $15.1 million of net current AY strengthening driven by $7.9 million from our Cargo product relating to a satellite loss, $5.7 million from our Property Division relating to increased weather loss activity and $1.0 million from our Energy & Engineering division experiencing adverse loss emergence. Additionally our Int’l Insurance reporting segment experienced $5.4 million of net prior AY releases driven by $11.5 million of favorable loss emergence in our Int’l Marine operating segment. This was partially offset by our Int’l P&C operating segment experiencing strengthening of $10.1 million relating to the Property Division increased weather loss activity offset by $6.0 million of favorable loss emergence in our Offshore Energy product. Our Int’l Professional Liability operating segment increased by $1.9 million as a result of a bad debt expense due to lower expectations of recoveries from a large reinsurer. In addition, we were unfavorably impacted by $2.2 million of RRPs as noted above.

For the nine months ended September 30, 2015, our Int’l Insurance reporting segment recorded $8.4 million of net prior AY reserve releases including $6.0 million, $1.6 million and $0.8 million from our Int’l Marine, Int’l P&C and Int’l Professional Liability operating segments, respectively, as well as $2.0 million of favorable RRPs.  This was offset by $9.5 million of additional net current AY reserve development within our Int’l Marine operating segment due to large loss activity in our P&I product.

The changes in Net losses and LAE ratio, as adjusted, are primarily due to the mix of business earned driven by the repositioning of certain Hull and Cargo products in our Int’l Marine operating segment and certain E&O products within our Int’l Professional Liability operating segment.  

Commission Expenses

The Commission expense ratio for the three and nine months ended September 30, 2016 increased 0.6 points and 2.2 points, respectively, as compared to the same periods in 2015. This is mainly due to growth in Net earned premium in our Property division within our Int’l P&C operating segment which is not subject to ceded proportional reinsurance, resulting in a change in business mix for 2016. In addition, there is also less proportional reinsurance across all our Int’l operating segments and to a lesser extent lower ceded reinsurance profit commissions in certain products compared to the same periods in the prior year. Included in commission in our Int’l P&C operating segment is income of $1.7 million from an accrual release for reinsurance sliding scale commission based on final calculations for the reinsurance treaty year.

Other Operating Expenses

For the three and nine months ended September 30, 2016, Other operating expenses increased $0.2 million and $10.7 million, respectively, as compared to the same periods in 2015 due to continued investment in our underwriting teams and support staff, and increased Lloyd’s charges, partially offset by favorable foreign exchange rates.

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GlobalRe

The following tables summarize our Underwriting profit (loss) for our GlobalRe reporting segment for the three and nine months ended September 30, 2016 and 2015:

	GlobalRe
	Three Months Ended September 30,
amounts in thousands	2016			2015			% Change
Gross written premiums	$	35,799		$	36,491			(1.9	%)
Ceded written premiums		(1,376	)		(566	)		143.2	%
Net written premiums		34,423			35,925			(4.2	%)
Net earned premiums	$	42,527		$	43,140			(1.4	%)
Net losses and LAE		(21,430	)		(22,224	)		(3.6	%)
Commission expenses		(8,951	)		(7,705	)		16.2	%
Other operating expenses		(4,437	)		(3,714	)		19.5	%
Other underwriting income (expense)		122			395			(69.1	%)
Underwriting profit (loss)	$	7,831		$	9,892			(20.8	%)
Losses and LAE ratio		50.4	%		51.5	%
Commission expense ratio		21.0	%		17.9	%
Other operating expense ratio (1)		10.2	%		7.7	%
Combined ratio		81.6	%		77.1	%

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

	GlobalRe
	Nine Months Ended September 30,
amounts in thousands	2016			2015			% Change
Gross written premiums	$	127,787		$	141,891			(9.9	%)
Ceded written premiums		(7,467	)		(5,806	)		28.6	%
Net written premiums		120,320			136,085			(11.6	%)
Net earned premiums	$	118,312		$	124,494			(5.0	%)
Net losses and LAE		(68,176	)		(70,387	)		(3.1	%)
Commission expenses		(24,188	)		(23,042	)		5.0	%
Other operating expenses		(14,175	)		(11,975	)		18.4	%
Other underwriting income (expense)		374			441			(15.2	%)
Underwriting profit (loss)	$	12,147		$	19,531			(37.8	%)
Losses and LAE ratio		57.6	%		56.5	%
Commission expense ratio		20.4	%		18.5	%
Other operating expense ratio (1)		11.7	%		9.3	%
Combined ratio		89.7	%		84.3	%

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

Gross Written Premiums

Gross written premiums decreased $0.7 million for the three months ended September 30, 2016, compared to the same period in 2015, primarily due to the year over year effect of prior year favorable premium adjustments within our Accident & Health (“A&H”) product, partially offset by current year new business within our Agriculture and P&C products.

Gross written premiums decreased $14.1 million for the nine months ended September 30, 2016 compared to the same period in 2015, primarily due to non-renewals within our A&H product, compounded by prior year favorable premium adjustments in our A&H product, partially offset by year over year written premium growth in our Agriculture, P&C and Property Treaty products.

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Ceded Written Premiums

Ceded written premiums increased $0.8 million for the three months ended September 30, 2016, compared to the same period in 2015, primarily due to an additional Surety Excess of Loss (“XOL”) contract written in the quarter compounded by higher XOL costs in our Marine and P&C products.  

Ceded written premiums increased $1.7 million for the nine months ended September 30, 2016, compared to the same period in 2015, primarily due to higher costs on the XOL renewals and the additional Surety XOL contract written.

Net Earned Premiums

Net earned premiums decreased $0.6 million for the three months ended September 30, 2016, compared to the same period in 2015, primarily due to the continued impact of the non-renewals within our A&H product, partially offset by year over year growth in our Agriculture, P&C and Property Treaty products.

Net earned premiums decreased $6.2 million for the nine months ended September 30, 2016, compared to the same period in 2015, primarily due to the continued impact of the non-renewals within our A&H product, compounded by prior year favorable premium adjustments within our A&H product partially offset by year over year growth in our Agriculture, P&C and Property Treaty products.

Net Losses and LAE

The Net losses and LAE reserves as of September 30, 2016 and December 31, 2015 are as follows:

	GlobalRe
	As of
amounts in thousands	September 30, 2016		December 31, 2015		% Change
Case reserves	$	47,448	$	32,160		47.5	%
IBNR reserves		64,992		76,616		(15.2	%)
Total	$	112,440	$	108,776		3.4	%

The following tables present the impact of RRPs and reserve development on our Net losses and LAE ratio for the three and nine months ended September 30, 2016 and 2015: 

	GlobalRe
	Three Months Ended September 30,						Point
	2016			2015			Change
Net losses and LAE ratio, reported		50.4	%		51.5	%		(1.1	)
RRPs		0.5	%		0.3	%		0.2
Additional net current AY reserve release/(development)		(3.4	%)		(1.2	%)		(2.2	)
Net prior AY reserve release/(strengthening)		7.3	%		9.9	%		(2.6	)
Net losses and LAE ratio, adjusted		54.8	%		60.5	%		(5.7	)

	GlobalRe
	Nine Months Ended September 30,						Point
	2016			2015			Change
Net losses and LAE ratio, reported		57.6	%		56.5	%		1.1
RRPs		0.4	%		0.3	%		0.1
Additional net current AY reserve release/(development)		(7.3	%)		(0.4	%)		(6.9	)
Net prior AY reserve release/(strengthening)		3.8	%		3.4	%		0.4
Net losses and LAE ratio, adjusted		54.5	%		59.8	%		(5.3	)

Our GlobalRe reporting segment recorded $4.1 million of prior AY reserve releases for the three months ended September 30, 2016, related to our A&H product, compounded by favorable impact of $0.4 million of RRPs, partially offset by $1.4 million of additional net current AY reserve development in our P&C product and $1.0 million of prior AY reserve development in our Marine product.

For the three months ended September 30, 2015, our GlobalRe reporting segment was favorably impacted by $4.3 million of net prior AY reserve releases, compounded by $0.2 million of net favorable RRPs, partially offset by $0.5 million of additional net current AY reserve development.  

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Our GlobalRe reporting segment recorded $8.6 million of additional net current AY reserve development for the nine months ended September 30, 2016, comprised of CAT losses related to Alberta Wildfires, Ecuador Earthquake and the Taiwan Earthquake, partially offset by $4.5 million of net prior AY reserve releases, primarily from our A&H product as mentioned above, compounded by $0.8 million of net favorable RRPs.

For the nine months ended September 30, 2015, our GlobalRe reporting segment was favorably impacted by $4.3 million of net prior AY reserve releases as mentioned above, compounded by $0.7 million of net favorable RRPs, partially offset by $0.5 million of additional net current AY reserve development, as mentioned above.

The changes in Net losses and LAE ratio, as adjusted, are primarily due to mix of business earned, driven by less Net earned premium within our A&H product, which attracted higher ultimate loss ratios.

Commission Expenses

For the three and nine months ended September 30, 2016, the commission expense ratio increased 3.1 points and 1.9 points, respectively, compared to the same periods in 2015, due to mix of business changes, particularly a decrease in our A&H and Professional Liability XOL products which carry a lower commission rate, coupled with our new Agriculture business from South America which carries a higher commission rate.

Other Operating Expenses

For the three and nine months ended September 30, 2016, Other operating expenses increased $0.7 million and $2.2 million   compared to the same periods in 2015.  The increase is primarily due to additional costs associated with expenses related to continued investment in our 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 September 30, 2016 and December 31, 2015, our capital resources were as follows:

	As of
amounts in thousands	September 30, 2016			December 31, 2015
Senior notes	$	263,690		$	263,580
Stockholders' equity		1,204,281			1,096,148
Total capitalization	$	1,467,971		$	1,359,728
Ratio of debt to total capitalization		18.0	%		19.4	%

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 and any dividends declared by the Board of Directors. Going forward, the interest payments may be made from funds held at our Parent Company or dividends from our subsidiaries.

NIC 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 September 30, 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 September 30, 2016, that amount was $1.8 million (£1.3 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.

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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 September 30, 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 our 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 GBP 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 September 30, 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 September 30, 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.

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 $187.0 million for the nine months ended September 30, 2016 compared to $159.1 million for the same period in 2015.  The increase in cash flow from operations was due to increased premium collections which were partially offset by higher gross claim and operating expense payments as well as increased net reinsurance outflows, all resulting from

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the profitable growth in our business. Additionally, estimated tax payments decreased from the prior year due to the utilization of 2015 federal tax overpayment against our 2016 tax liability.  

Net cash used in investing activities was $99.8 million for the nine months ended September 30, 2016 compared to $181.8 million for the comparable period in 2015.  The fluctuation in cash used in investing activities is predominately due to the capitalization of our U.K. based insurance company, NIIC, which remains in cash as of September 30, 2016.

Net cash used in financing activities was $0.8 million for the nine months ended September 30, 2016 compared with net cash provided by financing activities of $1.4 million for the same period in 2015. The fluctuation in cash used in financing activities is the result of instituting a quarterly cash dividend paid on our Company Common stock in the third quarter.

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 September 30, 2016, our portfolio had a duration of 3.9 years.  Management periodically projects cash flow of the investment portfolio and other sources in order to maintain the appropriate levels of liquidity in an effort to ensure our ability to satisfy claims.  As of September 30, 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 September 30, 2016, the tax-exempt portion of our Fixed maturities portfolio was 18.1%.  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.

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

	Fair Value as of
amounts in thousands	September 30, 2016		December 31, 2015		% Change
Fixed maturities:
U.S. Treasury bonds, agency bonds and foreign    government bonds	$	262,030	$	252,882		3.6	%
States, municipalities and political subdivisions		580,324		576,859		0.6	%
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		526,069		379,269		38.7	%
Residential mortgage obligations		27,055		30,465		(11.2	%)
Asset-backed securities		288,636		225,012		28.3	%
Commercial mortgage-backed securities		165,405		189,713		(12.8	%)
Subtotal	$	1,007,165	$	824,459		22.2	%
Corporate bonds		810,898		760,010		6.7	%
Total fixed maturities	$	2,660,417	$	2,414,210		10.2	%
Equity securities		342,677		305,271		12.3	%
Other invested assets		2,021		—	NM
Short-term investments		134,273		217,745		(38.3	%)
Total investments	$	3,139,388	$	2,937,226		6.9	%

NM- Percentage change not meaningful

Invested assets increased from December 31, 2015 primarily due to positive cash flow from operations and to a lesser extent a decrease in Treasury rates and a rally in the equity markets which resulted in increased unrealized gains.  Operating cash flows were primarily directed to Asset-backed securities and Agency mortgage-backed securities as we look for market opportunities to further

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deploy funds.  Corporate bonds and Equity securities benefitted from a rally in the treasury and equity markets which resulted in increased unrealized gains for these asset classes.  The decrease in short term investments is offset by a corresponding increase in cash as we capitalized NIIC.

During the third quarter of 2016, our Company made investments in certain companies, which are reported as Other invested assets on the Consolidated Balance Sheet and accounted for using the equity method.  Our initial estimate of the net asset value of these investments is the transaction price.  We believe the net asset value to be a practical expedient for the fair value of these investments.

The following table sets forth the amount of our Fixed maturities as of September 30, 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  September 30, 2016
amounts in thousands	Rating	Fair Value		AmortizedCost
Rating description:
Extremely strong	AAA	$	444,844	$	438,769
Very strong	AA		1,163,974		1,127,812
Strong	A		677,851		663,927
Adequate	BBB		302,089		290,669
Speculative	BB & Below		71,659		69,873
Total	AA-	$	2,660,417	$	2,591,050

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 September 30, 2016:

	As of September 30, 2016
amounts in thousands	AAA		AA		A		BBB		BB and below		FairValue		Amortized Cost
Municipal bonds	$	39,952	$	386,365	$	143,643	$	10,364	$	—	$	580,324	$	551,805
Agency residential mortgage-backed		—		526,069		—		—		—		526,069		514,396
Residential mortgage-backed		18,072		1,606		83		1,150		6,144		27,055		26,697
Asset-backed		159,272		24,868		90,023		14,473		—		288,636		287,591
Commercial mortgage-backed		121,255		30,274		13,876		—		—		165,405		159,436
Corporate bonds		10,559		60,803		397,919		276,102		65,515		810,898		788,805
Total	$	349,110	$	1,029,985	$	645,544	$	302,089	$	71,659	$	2,398,387	$	2,328,730

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 type:

	As of  September 30, 2016
amounts in thousands	Fair Value		Amortized Cost
U.S. Treasury bonds, agency bonds and foreign government    bonds:
U.S. Treasury bonds	$	55,159	$	53,359
Agency bonds		76,416		75,016
Foreign government bonds		130,455		133,945
Total U.S. Treasury bonds, agency bonds and foreign    government bonds	$	262,030	$	262,320
States, municipalities and political subdivisions:
General obligation	$	145,631	$	139,226
Prerefunded		24,413		23,447
Revenue		312,272		293,766
Taxable		98,008		95,366
Total States, municipalities and political subdivisions	$	580,324	$	551,805

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We own $51.8 million of municipal securities which are credit enhanced by various financial guarantors. As of September 30, 2016, the average underlying credit rating for these securities is AA-.  

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 September 30, 2016:

	As of  September 30, 2016
amounts in thousands	Fair Value		AmortizedCost
AMBS:
GNMA	$	60,111	$	57,723
FNMA		332,181		325,659
FHLMC		133,777		131,014
Total agency mortgage-backed securities	$	526,069	$	514,396
RMBS:
Prime	$	7,811	$	7,541
Alt-A and subprime		1,172		1,140
Non-U.S. RMBS		18,072		18,016
Total residential mortgage-backed securities	$	27,055	$	26,697

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-agency backed 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 prime, subprime and Alt-A categories are as defined by S&P.

Details of the collateral of our asset-backed securities portfolio as of September 30, 2016 are presented below:

	As of September 30, 2016
amounts in thousands	Fair Value		AmortizedCost
Auto loans	$	38,710	$	38,402
Consumer loans		32,853		32,611
Credit cards		45,812		45,545
Collateralized loan obligations		96,098		96,302
Franchise		10,927		10,645
Time share		38,966		38,877
Miscellaneous		25,270		25,209
Total	$	288,636	$	287,591

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 E.U. that have adopted the Euro as their common currency. As of September 30, 2016, the fair value of such securities was $94.4 million, with an amortized cost of $93.1 million, representing 3.1% of our total Fixed maturities and equity portfolio.  Our largest exposure is in the Netherlands with a total of $35.3 million.  We have no direct exposure to Greece, Portugal, Italy or Spain within the Euro Area as of September 30, 2016

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The following table summarizes the gross unrealized investment losses as of September 30, 2016 by length of time where the fair value was less than 80% of amortized cost:

	As of  September 30, 2016
	Fixed		Equity
amounts in thousands	Maturities		Securities		Total
Less than twelve months	$	—	$	—	$	—
Longer than twelve months		1,792		—		1,792
Total	$	1,792	$	—	$	1,792

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

Our Company had no credit related OTTI losses during the three months ended September 30, 2016. Our Company had one credit related OTTI loss of $0.2 million in the Fixed maturities portfolio for the nine months ended September 30, 2016.  Our Company had three credit related losses totaling $1.3 million and $1.7 million in the equity portfolio during the three and nine months ended September 30, 2015, respectively. 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;

• 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 GBP and the Canadian dollar (“CAD”).  We manage our foreign currency exchange rate risk primarily through asset-liability matching.

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The following table shows foreign currency denominated net asset position in USD as of September 30, 2016 and December 31, 2015, and the expected dollar change in fair value that would occur if exchange rates changed 10% from exchange rates in effect at those times:

	As of  September 30,			As of December 31, (1)			As of  September 30,			As of December 31, (1)
	2016			2015			2016			2015
amounts in thousands	Value of Net Assets in USD						10%depreciation of all foreign currency exchange rates against the USD
GBP	$	26,223		$	(34,787	)	$	(2,622	)	$	3,479
CAD		(3,361	)		6,301			336			(630	)
Total (2)	$	22,862		$	(28,486	)	$	(2,286	)	$	2,849

(1) Amounts reported as of December 31, 2015 have been reclassified to include only monetary net assets to conform with current period presentation.

(2) Amount excludes additional currencies where the value of net assets in USD is less than 1 % of total net assets of our Company

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 third 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.

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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, except for the addition of a risk factor relating to the U.K. referendum vote to leave the E.U. and the addition of a risk factor relating to the payment of dividends.

The withdrawal of the U.K. from the E.U. could have a material adverse effect on our business, business opportunities,results of operations, financial condition and cash flows.  

Although the Brexit referendum is non-binding, assuming the U.K. government triggers the relevant withdrawal provision of the E.U. Treaty by the end of 2016, it is expected that formal negotiations on the terms of the U.K.’s withdrawal from the E.U. will commence shortly thereafter. Our international operations are based in the U.K., and we have offices in the E.U. The effects of the withdrawal by the U.K. from the E.U. on our operations in the U.K. and E.U., and more particularly on our operations conducted at Lloyd’s, will depend on any agreements the U.K. or Lloyd’s makes to retain access to E.U. markets either during a transitional period or more permanently. However, a withdrawal could, among other outcomes, cause significant volatility in global stock markets, currency exchange rate fluctuations and asset valuations, and disrupt the U.K. market and the E.U. markets in which we serve and operate, by increasing restrictions on the trade and free movement of goods, services and people between the U.K. and the E.U.  In addition, any withdrawal could lead to legal uncertainty and potentially divergent national laws and regulations as the U.K. determines which E.U. laws to replace or replicate. The consequences of a withdrawal in the long term are unknown and not quantifiable at this time, but we do not believe that the withdrawal of the U.K. from the E.U. will have a material impact on our results of operations or financial condition in the short term. However, given the lack of comparable precedent, any of these effects of a withdrawal, among others, could materially adversely affect our business, business opportunities, results of operations, financial condition and cash flows.

The payment of dividends is at the discretion of our Board of Directors, and the reduction or elimination of dividends could cause a decline in the price of our Common stock.

We are not obligated to pay dividends on our Common stock. Any determinations by the Board of Directors to declare and pay cash dividends on our Company’s Common stock will be based primarily upon our Company’s financial condition, results of operations, business requirements, regulatory and legal constraints and any other factors the Board of Directors deems relevant. Several of these factors will be subject to general economic, financial, competitive, legislative, regulatory factors beyond our Company’s control, and any reduction or elimination of dividends could cause our Company’s stock price to decline.

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

None

46

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable

Item 5. Other Information

None

47

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

48

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:  November 4, 2016	By:	/s/ Ciro M. DeFalco
		Ciro M. DeFalco
		Senior Vice President and Chief Financial Officer

49

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

50

EX-11.1

Exhibit 11-1

THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

Computation of Per Share Earnings

The following table presents the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2016:

	Three Months Ended September 30,				Nine Months Ended September 30,
amounts in thousands, except share and per share amounts	2016		2015		2016		2015
Net income		22,013		18,201		61,135		63,314
Basic weighted average shares		14,557,376		14,411,927		14,528,917		14,384,291
Effect of common stock equivalents:
Assumed exercise of stock options and vesting of stock grants		513,046		399,168		469,468		383,658
Diluted weighted average shares		15,070,422		14,811,095		14,998,385		14,767,949
Net income per common share:
Basic	$	1.51	$	1.26	$	4.21	$	4.40
Diluted	$	1.46	$	1.23	$	4.08	$	4.29

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: November 4, 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: November 4, 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 September 30, 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

November 4, 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 September 30, 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

November 4, 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	9 Months Ended
	Sep. 30, 2016	Oct. 28, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
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		14,559,435

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Investments:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2016: $2,591,050; 2015: $2,400,245)	$ 2,660,417	$ 2,414,210
Equity securities, available-for-sale, at fair value (cost: 2016: $305,906; 2015: $281,943)	342,677	305,271
Other invested assets	2,021
Short-term investments, at fair value (amortized cost: 2016: $134,273; 2015: $217,743)	134,273	217,745
Total investments	3,139,388	2,937,226
Cash	147,515	69,901
Premiums receivable	320,429	276,616
Prepaid reinsurance premiums	222,891	232,588
Reinsurance recoverable on paid losses	73,331	49,506
Reinsurance recoverable on unpaid losses and loss adjustment expenses	787,917	809,518
Deferred policy acquisition costs	116,295	91,983
Accrued investment income	16,840	16,001
Goodwill and other intangible assets	6,568	6,807
Current income tax receivable, net	15,879	22,323
Deferred income tax, net		3,900
Other assets	50,343	67,643
Total assets	4,897,396	4,584,012
Liabilities:
Reserves for losses and loss adjustment expenses	2,268,127	2,202,644
Unearned premiums	897,975	820,676
Reinsurance balances payable	123,702	107,411
Senior notes	263,690	263,580
Deferred income tax, net	8,703
Payable for investments purchased	42,783	1,495
Accounts payable and other liabilities	88,135	92,058
Total liabilities	3,693,115	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 18,070,815 shares for 2016 and 17,942,269 shares for 2015	1,806	1,793
Additional paid-in capital	368,860	357,829
Treasury stock, at cost (3,511,380 shares for 2016 and 2015)	(155,801)	(155,801)
Retained earnings	927,239	868,723
Accumulated other comprehensive income	62,177	23,604
Total stockholders' equity	1,204,281	1,096,148
Total liabilities and stockholders' equity	$ 4,897,396	$ 4,584,012

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Fixed maturities, available-for-sale, amortized cost	$ 2,591,050	$ 2,400,245
Equity securities, available-for-sale, cost	305,906	281,943
Short-term investments, amortized cost	$ 134,273	$ 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	18,070,815	17,942,269
Treasury stock, shares	3,511,380	3,511,380

XML

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Gross written premiums	$ 374,930	$ 354,062	$ 1,201,372	$ 1,129,993
Revenues:
Net written premiums	277,001	251,939	903,356	799,141
Change in unearned premiums	7,009	2,143	(86,996)	(66,599)
Net earned premiums	284,010	254,082	816,360	732,542
Net investment income	19,875	17,371	59,344	50,219
Total other-than-temporary impairment losses	23	(1,298)	(248)	(1,747)
Portion of loss recognized in other comprehensive income (before tax)	(23)	23	98	49
Net other-than-temporary impairment losses recognized in earnings		(1,275)	(150)	(1,698)
Net realized gains (losses)	1,586	518	5,143	10,453
Other income (expenses)	(183)	(2,518)	6,796	(4,638)
Total revenues	305,288	268,178	887,493	786,878
Expenses:
Net losses and loss adjustment expenses	172,793	146,546	492,955	418,717
Commission expenses	42,611	34,253	120,891	98,638
Other operating expenses	56,137	56,599	176,020	164,297
Interest expense	3,859	3,856	11,575	11,567
Total expenses	275,400	241,254	801,441	693,219
Income before income taxes	29,888	26,924	86,052	93,659
Income tax expense (benefit)	7,875	8,723	24,917	30,345
Net income	$ 22,013	$ 18,201	$ 61,135	$ 63,314
Net income per common share:
Basic	$ 1.51	$ 1.26	$ 4.21	$ 4.40
Diluted	$ 1.46	$ 1.23	$ 4.08	$ 4.29
Average common shares outstanding:
Basic	14,557,376	14,411,927	14,528,917	14,384,291
Diluted	15,070,422	14,811,095	14,998,385	14,767,949

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 22,013	$ 18,201	$ 61,135	$ 63,314
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net of deferred tax	(2,414)	1,018	43,362	(18,765)
Reclassification adjustment for net realized (gains) losses included in net income, net of deferred tax	(519)	(544)	1,449	(2,733)
Change in net unrealized gains (losses) on investments	(2,933)	474	44,811	(21,498)
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period, net of deferred tax	15	(15)	(64)	(32)
Reclassification adjustment for other-than-temporary impairment credit losses recognized in net income, net of deferred tax		188		316
Change in other-than-temporary impairments	15	173	(64)	284
Change in foreign currency translation gains (losses), net of deferred tax	(335)	1	(6,174)	12
Other comprehensive income (loss)	(3,253)	648	38,573	(21,202)
Comprehensive income (loss)	$ 18,760	$ 18,849	$ 99,708	$ 42,112

XML

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]
Unrealized gains (losses) on investments arising during the period, deferred tax	$ 1,300	$ (549)	$ (23,349)	$ 9,858
Reclassification adjustment for net realized (gains) losses included in net income, deferred tax	279	293	(780)	1,472
Non credit other-than-temporary impairments arising during the period, deferred tax	(8)	8	34	17
Reclassification adjustment for other-than-temporary impairment credit losses recognized in net income, deferred tax	0	(101)	0	(170)
Change in foreign currency translation gains (losses), deferred tax	$ 175	$ (1)	$ 3,322	$ (6)

XML

Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 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	$ 61,135				61,135
Dividends paid	(2,619)				(2,619)
Changes in comprehensive income:
Change in net unrealized gain (loss) on investments	44,811					44,811
Change in net non-credit other-than-temporary impairment losses	(64)					(64)
Change in foreign currency translation gain (loss)	(6,174)					(6,174)
Other comprehensive income (loss)	38,573					38,573
Shares issued under stock plan	(2,885)	$ 13	(2,898)
Shares issued under stock plan (in shares)		128,546
Share-based compensation	13,929		13,929
Ending balance at Sep. 30, 2016	$ 1,204,281	$ 1,806	$ 368,860	$ (155,801)	$ 927,239	$ 62,177
Ending balance (in shares) at Sep. 30, 2016	18,070,815	18,070,815		3,511,380

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities:
Net income	$ 61,135	$ 63,314
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation & amortization	4,214	3,892
Deferred income taxes	(7,066)	(185)
Net realized (gains) losses	(5,143)	(10,453)
Net other-than-temporary impairments recognized in earnings	150	1,698
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	(2,225)	55,436
Reserves for losses and loss adjustment expenses	65,483	15,683
Prepaid reinsurance premiums	9,697	(14,637)
Unearned premiums	77,299	81,237
Premiums receivable	(43,813)	(735)
Deferred policy acquisition costs	(24,312)	(9,507)
Accrued investment income	(839)	(1,338)
Reinsurance balances payable	16,291	(18,993)
Current income tax payable, net	5,101	411
Other	31,047	(6,679)
Net cash provided by (used in) operating activities	187,019	159,144
Fixed maturities
Redemptions and maturities	207,620	126,930
Sales	370,501	266,707
Purchases	(776,086)	(446,516)
Equity securities
Sales	36,918	76,388
Purchases	(58,405)	(178,517)
Change in payable for securities	41,265	28,465
Purchase of other invested assets	(2,021)
Net change in short-term investments	84,022	(53,747)
Purchase of property and equipment	(3,571)	(1,503)
Net cash provided by (used in) investing activities	(99,757)	(181,793)
Financing activities:
Proceeds of stock issued from employee stock purchase plan	1,840	1,352
Proceeds of stock issued from exercise of stock options		29
Dividends paid	(2,619)
Net cash provided by (used in) financing activities	(779)	1,381
Effect of exchange rate on cash	(8,869)
Change in cash	77,614	(21,268)
Cash at beginning of year	69,901	90,751
Cash at end of period	147,515	69,483
Supplemental information:
Income taxes paid, net	24,148	28,634
Interest paid	7,619	7,619
Issuance of stock to directors	$ 633	$ 563

XML

Organization and Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 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 term “Parent Company” is 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.  Certain amounts for the prior period have been reclassified to conform with the current period presentation.

Income Taxes

The interim income tax provision has been computed based on our estimated annual Effective tax rate, which represents our best estimate on a year to date basis for the interim period.  As a result, the tax provision for a given quarter equals the difference between the provision recorded cumulatively year to date less the amount recorded cumulatively as of the end of the prior interim period.  Our Effective tax rate for the quarter and year to date differs from the federal tax rate of 35% primarily due to 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 Statements:

• Accounting Standards Update 2015-03 – Interest – Imputation of Interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs, which is 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 is 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 is  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 on 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.

• Accounting Standards Update 2016-13 – Financial Instruments – Credit Losses (Topic 326) – amends the measurement of credit losses on financial instruments not accounted for at fair value including loans, debt securities, reinsurance receivables and any other financial assets, which will be effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years.

• Accounting Standards Update 2016-15 – Statements of Cash Flows (Topic 230) – Classification of Certain Cash Receipts and Cash Payments amends how certain cash receipts and cash payments are presented in the statement of cash flows to reduce existing diversity in practice.

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

9 Months Ended

Sep. 30, 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 reporting segments: U.S. Insurance, International Insurance (“Int’l Insurance”), 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 (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 reporting 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 and nine months ended September 30, 2016 and 2015 was as follows:

	Three Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	161,722		$	79,761		$	42,527		$	—		$	284,010
Net losses and LAE		(106,320	)		(45,043	)		(21,430	)		—			(172,793	)
Commission expenses		(18,630	)		(15,348	)		(8,951	)		318			(42,611	)
Other operating expenses		(31,517	)		(20,183	)		(4,437	)		—			(56,137	)
Other underwriting income (expense)		240			—			122			(318	)		44
Underwriting profit (loss)	$	5,495		$	(813	)	$	7,831		$	—		$	12,513
Net investment income											19,875			19,875
Net realized gains (losses)											1,586			1,586
Interest expense											(3,859	)		(3,859	)
Other income (loss)											(227	)		(227	)
Income before income taxes	$	5,495		$	(813	)	$	7,831		$	17,375		$	29,888
Income tax (expense) benefit											(7,875	)		(7,875	)
Net income (loss)													$	22,013
Losses and LAE ratio		65.7	%		56.5	%		50.4	%					60.8	%
Commission expense ratio		11.5	%		19.2	%		21.0	%					15.0	%
Other operating expense ratio (2)		19.4	%		25.3	%		10.2	%					19.8	%
Combined ratio		96.6	%		101.0	%		81.6	%					95.6	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Three Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	142,409		$	68,533		$	43,140		$	—		$	254,082
Net losses and LAE		(85,140	)		(39,182	)		(22,224	)		—			(146,546	)
Commission expenses		(15,157	)		(12,780	)		(7,705	)		1,389			(34,253	)
Other operating expenses		(32,948	)		(19,937	)		(3,714	)		—			(56,599	)
Other underwriting income (expense)		1,013			—			395			(1,389	)		19
Underwriting profit (loss)	$	10,177		$	(3,366	)	$	9,892		$	—		$	16,703
Net investment income											17,371			17,371
Net realized gains (losses)											(757	)		(757	)
Interest expense											(3,856	)		(3,856	)
Other income (loss)											(2,537	)		(2,537	)
Income before income taxes	$	10,177		$	(3,366	)	$	9,892		$	10,221		$	26,924
Income tax (expense) benefit											(8,723	)		(8,723	)
Net income (loss)													$	18,201
Losses and LAE ratio		59.8	%		57.2	%		51.5	%					57.7	%
Commission expense ratio		10.6	%		18.6	%		17.9	%					13.5	%
Other operating expense ratio (2)		22.5	%		29.1	%		7.7	%					22.2	%
Combined ratio		92.9	%		104.9	%		77.1	%					93.4	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Nine Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	462,446		$	235,602		$	118,312		$	—		$	816,360
Net losses and LAE		(291,260	)		(133,519	)		(68,176	)		—			(492,955	)
Commission expenses		(50,379	)		(47,524	)		(24,188	)		1,200			(120,891	)
Other operating expenses		(96,848	)		(64,997	)		(14,175	)		—			(176,020	)
Other underwriting income (expense)		943			—			374			(1,200	)		117
Underwriting profit (loss)	$	24,902		$	(10,438	)	$	12,147		$	—		$	26,611
Net investment income											59,344			59,344
Net realized gains (losses)											4,993			4,993
Interest expense											(11,575	)		(11,575	)
Other income (loss)											6,679			6,679
Income (loss) before income taxes	$	24,902		$	(10,438	)	$	12,147		$	59,441		$	86,052
Income tax (expense) benefit											(24,917	)		(24,917	)
Net income (loss)													$	61,135
Losses and LAE ratio		63.0	%		56.7	%		57.6	%					60.4	%
Commission expense ratio		10.9	%		20.2	%		20.4	%					14.8	%
Other operating expense ratio (2)		20.7	%		27.5	%		11.7	%					21.5	%
Combined ratio		94.6	%		104.4	%		89.7	%					96.7	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Nine Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate(1)			Total
Net earned premiums	$	410,804		$	197,244		$	124,494		$	—		$	732,542
Net losses and LAE		(247,094	)		(101,236	)		(70,387	)		—			(418,717	)
Commission expenses		(41,777	)		(35,491	)		(23,042	)		1,672			(98,638	)
Other operating expenses		(98,010	)		(54,312	)		(11,975	)		—			(164,297	)
Other underwriting income (expense)		1,330			—			441			(1,672	)		99
Underwriting profit (loss)	$	25,253		$	6,205		$	19,531		$	—		$	50,989
Net investment income											50,219			50,219
Net realized gains (losses)											8,755			8,755
Interest expense											(11,567	)		(11,567	)
Other income (loss)											(4,737	)		(4,737	)
Income (loss) before income taxes	$	25,253		$	6,205		$	19,531		$	42,670		$	93,659
Income tax (expense) benefit											(30,345	)		(30,345	)
Net income (loss)													$	63,314
Losses and LAE ratio		60.1	%		51.3	%		56.5	%					57.2	%
Commission expense ratio		10.2	%		18.0	%		18.5	%					13.5	%
Other operating expense ratio (2)		23.6	%		27.6	%		9.3	%					22.3	%
Combined ratio		93.9	%		96.9	%		84.3	%					93.0	%

(1) - Includes Corporate segment intercompany eliminations.

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

Revenue by operating segment for the three and nine months ended September 30, 2016 and 2015 was as follows:

	Three Months Ended September 30, 2016									Three Months Ended September 30, 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	$	40,271	$	(17,636	)	$	22,635	$	25,465	$	35,529	$	(13,865	)	$	21,664	$	24,292		13.3	%		27.2	%		4.5	%		4.8	%
P&C		161,600		(36,011	)		125,589		115,971		154,009		(34,902	)		119,107		104,473		4.9	%		3.2	%		5.4	%		11.0	%
ProfessionalLiability		32,776		(7,712	)		25,064		20,286		29,245		(14,986	)		14,259		13,644		12.1	%		(48.5	%)		75.8	%		48.7	%
Total	$	234,647	$	(61,359	)	$	173,288	$	161,722	$	218,783	$	(63,753	)	$	155,030	$	142,409		7.3	%		(3.8	%)		11.8	%		13.6	%
Int'l Insurance
Marine	$	38,453	$	(12,631	)	$	25,822	$	34,794	$	41,002	$	(10,985	)	$	30,017	$	36,792		(6.2	%)		15.0	%		(14.0	%)		(5.4	%)
P&C		38,077		(15,331	)		22,746		25,584		37,449		(20,034	)		17,415		16,879		1.7	%		(23.5	%)		30.6	%		51.6	%
Professional Liability		27,954		(7,232	)		20,722		19,383		20,337		(6,785	)		13,552		14,862		37.5	%		6.6	%		52.9	%		30.4	%
Total	$	104,484	$	(35,194	)	$	69,290	$	79,761	$	98,788	$	(37,804	)	$	60,984	$	68,533		5.8	%		(6.9	%)		13.6	%		16.4	%
GlobalRe	$	35,799	$	(1,376	)	$	34,423	$	42,527	$	36,491	$	(566	)	$	35,925	$	43,140		(1.9	%)		143.2	%		(4.2	%)		(1.4	%)
Total	$	374,930	$	(97,929	)	$	277,001	$	284,010	$	354,062	$	(102,123	)	$	251,939	$	254,082		5.9	%		(4.1	%)		9.9	%		11.8	%

	Nine Months Ended September 30, 2016									Nine Months Ended September 30, 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	$	129,621	$	(53,823	)	$	75,798	$	73,636	$	118,167	$	(45,177	)	$	72,990	$	74,193		9.7	%		19.1	%		3.8	%		(0.7	%)
P&C		471,532		(103,286	)		368,246		335,342		458,371		(123,765	)		334,606		291,648		2.9	%		(16.5	%)		10.1	%		15.0	%
ProfessionalLiability		88,065		(21,365	)		66,700		53,468		81,559		(42,423	)		39,136		44,963		8.0	%		(49.6	%)		70.4	%		18.9	%
Total	$	689,218	$	(178,474	)	$	510,744	$	462,446	$	658,097	$	(211,365	)	$	446,732	$	410,804		4.7	%		(15.6	%)		14.3	%		12.6	%
Int'l Insurance
Marine	$	151,548	$	(33,274	)	$	118,274	$	109,746	$	149,844	$	(30,933	)	$	118,911	$	114,716		1.1	%		7.6	%		(0.5	%)		(4.3	%)
P&C		145,125		(57,025	)		88,100		70,608		112,014		(60,676	)		51,338		43,112		29.6	%		(6.0	%)		71.6	%		63.8	%
ProfessionalLiability		87,694		(21,776	)		65,918		55,248		68,147		(22,072	)		46,075		39,416		28.7	%		(1.3	%)		43.1	%		40.2	%
Total	$	384,367	$	(112,075	)	$	272,292	$	235,602	$	330,005	$	(113,681	)	$	216,324	$	197,244		16.5	%		(1.4	%)		25.9	%		19.4	%
GlobalRe	$	127,787	$	(7,467	)	$	120,320	$	118,312	$	141,891	$	(5,806	)	$	136,085	$	124,494		(9.9	%)		28.6	%		(11.6	%)		(5.0	%)
Total	$	1,201,372	$	(298,016	)	$	903,356	$	816,360	$	1,129,993	$	(330,852	)	$	799,141	$	732,542		6.3	%		(9.9	%)		13.0	%		11.4	%

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Investments

9 Months Ended

Sep. 30, 2016

Investments Debt And Equity Securities [Abstract]

Investments

NOTE 3.  INVESTMENTS

The following tables set forth our Company’s investments as of September 30, 2016 and December 31, 2015 and include Other-than-temporary-impairment (“OTTI”) securities recognized within Accumulated other comprehensive income (“AOCI”):

	September 30, 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	$	262,030	$	3,691	$	(3,981	)	$	262,320
States, municipalities and political subdivisions		580,324		29,288		(769	)		551,805
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		526,069		11,778		(105	)		514,396
Residential mortgage obligations		27,055		455		(97	)		26,697
Asset-backed securities		288,636		1,503		(458	)		287,591
Commercial mortgage-backed securities		165,405		6,392		(423	)		159,436
Subtotal	$	1,007,165	$	20,128	$	(1,083	)	$	988,120
Corporate bonds		810,898		23,447		(1,354	)		788,805
Total fixed maturities	$	2,660,417	$	76,554	$	(7,187	)	$	2,591,050
Equity securities		342,677		38,538		(1,767	)		305,906
Other invested assets		2,021		—		—			2,021
Short-term investments		134,273		—		—			134,273
Total investments	$	3,139,388	$	115,092	$	(8,954	)	$	3,033,250

	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 September 30, 2016 and December 31, 2015, our Company did not have a concentration of greater than 5% of invested assets in a single non-government backed issuer.

During the third quarter of 2016, the Company made investments in certain companies, which are reported as Other invested assets on the Consolidated Balance Sheet and accounted for using the equity method.  Our initial estimate of the net asset value of these investments is the transaction price.  We believe the net asset value to be a practical expedient for the fair value of these investments.

As of September 30, 2016 and December 31, 2015, Fixed maturities for which non-credit OTTI was previously recognized and included in AOCI are now in a net unrealized net 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 September 30, 2016 are shown in the following table:

	September 30, 2016
	Fair		Amortized
amounts in thousands	Value		Cost
Due in one year or less	$	81,849	$	83,551
Due after one year through five years		810,165		799,159
Due after five years through ten years		296,471		281,368
Due after ten years		464,767		438,852
Mortgage-backed and asset-backed securities		1,007,165		988,120
Total	$	2,660,417	$	2,591,050

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 September 30, 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:

	September 30, 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	$	91,676	$	(969	)	$	19,897	$	(3,012	)	$	111,573	$	(3,981	)
States, municipalities and political subdivisions		49,881		(593	)		9,932		(176	)		59,813		(769	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		52,754		(17	)		13,547		(88	)		66,301		(105	)
Residential mortgage obligations		1,317		(16	)		1,631		(81	)		2,948		(97	)
Asset-backed securities		22,422		(158	)		61,499		(300	)		83,921		(458	)
Commercial mortgage-backed securities		20,864		(38	)		8,854		(385	)		29,718		(423	)
Subtotal	$	97,357	$	(229	)	$	85,531	$	(854	)	$	182,888	$	(1,083	)
Corporate bonds		120,114		(622	)		23,053		(732	)		143,167		(1,354	)
Total fixed maturities	$	359,028	$	(2,413	)	$	138,413	$	(4,774	)	$	497,441	$	(7,187	)
Equity securities		38,050		(1,490	)		4,723		(277	)		42,773		(1,767	)
Total fixed maturities and equity securities	$	397,078	$	(3,903	)	$	143,136	$	(5,051	)	$	540,214	$	(8,954	)

	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 September 30, 2016, there were 177 Fixed maturities and 42 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 September 30, 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 losses for the less than 12 months category for the period ended September 30, 2016 is broadly spread across our common equity portfolio and to a lesser extent, agency and foreign government bonds due to an unfavorable exchange movement. The gross unrealized loss for the less than 12 months category for the period ended 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 September 30, 2016 and December 31, 2015, the largest unrealized loss by a non-government backed issuer in the investment portfolio was $0.4 million and $2.6 million, respectively.

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

Our Company reviews the magnitude of a security’s unrealized loss compared to its cost/amortized cost and the length of time that the security has been impaired to determine if an unrealized loss is other-than-temporary.  If warranted as a result of conditions relating to a particular security, our Company will also review securities with declines in fair value resulting from a headline news event involving the issuer, a headline news event involving the asset class, the advice of our external asset managers, or economic events that may impact the issuer to determine if an unrealized loss is other-than-temporary.  The depth of analysis performed is dependent upon the nature and magnitude of the indicators of other-than-temporary impairment present in regards to each impaired security.

For Equity securities, our Company performs a fundamental analysis of the issuer, including an evaluation of the mean analysts’ target price, to assess the likelihood of recovery of our cost basis in the security. Management also assesses the likelihood of future cash flows, dividends and increases to dividends, all of which affect the securities eligibility for our equity strategy and therefore our intent to hold the security.  If an equity security is deemed to be other-than-temporarily-impaired, the cost is written down to fair value with the loss recognized in earnings.

For Fixed maturities, our Company assesses the underlying fundamentals of each issuer to determine if there is a change in the amount or timing of expected cash flows.  Management compares the amortized cost basis to the present value of the revised cash flows using the historical book yield to determine the credit loss portion of impairment which is recognized in earnings.  All non-credit losses where we have the intent and ability to hold the security until recovery are recognized as changes in OTTI losses within AOCI.

Specifically for structured Fixed maturities, our Company analyzes 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, credit impairment is recognized in earnings. 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’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.  

As of September 30, 2016, our Company does not intend to sell, and it is more-likely-than-not that it will not be required to sell any of its securities with unrealized losses before they recover in value.

Our Company had no credit related OTTI losses during the three months ended September 30, 2016.  Our Company had one credit related OTTI loss of $0.2 million in the Fixed maturities portfolio during the nine months ended September 30, 2016.  Our Company had three credit related losses totaling $1.3 million and $1.7 million in the equity portfolio during the three and nine months ended September 30, 2015, respectively.

The following table summarizes the cumulative amounts related to our Company’s credit loss portion of the OTTI losses on Fixed maturities for the three and nine months ended September 30, 2016 and 2015:  

	Three Months Ended September 30,					Nine Months Ended September 30,
amounts in thousands	2016			2015		2016			2015
Beginning balance	$	2,511		$	2,361	$	2,361		$	2,361
Additions for credit loss impairments recognized in the    current period on securities not previously impaired		—			—		150			—
Additions for credit loss impairments recognized in the    current period on securities previously impaired		—			—		—			—
Reductions for credit loss impairments previously recognized  on securities sold during the period		(150	)		—		(150	)		—
Ending balance	$	2,361		$	2,361	$	2,361		$	2,361

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

	Three Months Ended September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities	$	17,124		$	15,353		$	50,781		$	45,660
Equity securities		3,540			2,543			10,418			6,383
Short-term investments		70			272			568			604
Total investment income	$	20,734		$	18,168		$	61,767		$	52,647
Investment expenses		(859	)		(797	)		(2,423	)		(2,428	)
Net investment income	$	19,875		$	17,371		$	59,344		$	50,219

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

	Three Months Ended September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities:
Gains	$	1,356		$	484		$	5,200		$	2,889
Losses		(1,221	)		(667	)		(3,086	)		(2,757	)
Fixed maturities, net	$	135		$	(183	)	$	2,114		$	132
Short-term:
Gains	$	128		$	9		$	803		$	109
Losses		(107	)		(120	)		(250	)		(273	)
Short-term, net	$	21		$	(111	)	$	553		$	(164	)
Equity securities:
Gains	$	1,443		$	1,107		$	3,123		$	12,185
Losses		(13	)		(295	)		(647	)		(1,700	)
Equity securities, net	$	1,430		$	812		$	2,476		$	10,485
Net realized gains (losses)	$	1,586		$	518		$	5,143		$	10,453

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Fair Value Measurement

9 Months Ended

Sep. 30, 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.

Other invested assets are measured at net asset value as a practical expedient for 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 above, 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 September 30, 2016 and December 31, 2015:

	September 30, 2016
amounts in thousands	Level 1		Level 2		Level 3		Fair Value based on net asset value		Total
Fixed maturities:
U.S.  Treasury bonds, agency bonds and    foreign government bonds	$	55,159	$	206,871	$	—	$	—	$	262,030
States, municipalities and political subdivisions		—		580,324		—		—		580,324
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		526,069		—		—		526,069
Residential mortgage obligations		—		27,055		—		—		27,055
Asset-backed securities		—		288,636		—		—		288,636
Commercial mortgage-backed securities		—		165,405		—		—		165,405
Subtotal	$	—	$	1,007,165	$	—	$	—	$	1,007,165
Corporate bonds		—		810,898		—		—		810,898
Total fixed maturities	$	55,159	$	2,605,258	$	—	$	—	$	2,660,417
Equity securities		158,963		183,714		—				342,677
Other invested assets		—		—		—		2,021		2,021
Short-term investments		134,273		—		—		—		134,273
Total assets measured at fair value	$	348,395	$	2,788,972	$	—	$	2,021	$	3,139,388
Senior notes	$	—	$	294,080	$	—	$	—	$	294,080
Total liabilities measured at fair value	$	—	$	294,080	$	—	$	—	$	294,080

	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 and nine months ended September 30, 2016 and 2015.

As of September 30, 2016, our Company did not have any Level 3 assets.

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Ceded Reinsurance

9 Months Ended

Sep. 30, 2016

Insurance [Abstract]

Ceded Reinsurance

NOTE 5. CEDED REINSURANCE

As of September 30, 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 $10.4 million as of September 30, 2016 and $6.9 million as of December 31, 2015. The increase is primarily due to lower expectations of recoveries from a reinsurer.

As of September 30, 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

9 Months Ended

Sep. 30, 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, our 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.  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 and $1.1 million of the incentive for the three and nine months ended September 30, 2016. As of September 30, 2016 and December 31, 2015, our Company has deferred revenue of $5.1 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

9 Months Ended

Sep. 30, 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 nine months ended September 30, 2016, we granted 216,973 stock incentive units at a grant price between $80.98 and $92.56.  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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Stockholders Equity

9 Months Ended

Sep. 30, 2016

Equity [Abstract]

Stockholders' Equity

NOTE 8. STOCKHOLDERS’ EQUITY

On May 26, 2016, our Board of Directors declared its intention to pay a regular quarterly cash dividend on The Navigators Group, Inc. Common stock.   On July 15, 2016 our Company paid a dividend of $0.09 per share on The Navigators Group, Inc. Common stock to Stockholders of record on June 20, 2016.  On September 30, 2016, our Company paid a dividend of $0.09 per share on The Navigators Group, Inc. Common stock to Stockholders of record on August 19, 2016.  

The declaration and amount of any future dividend will be at the discretion of the Board of Directors, and will depend upon many factors, including financial condition, results of operations, business requirements, regulatory, legal constraints and other factors the Board of Directors deems relevant.

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Subsequent Events

9 Months Ended

Sep. 30, 2016

Subsequent Events [Abstract]

Subsequent Events

NOTE 9. SUBSEQUENT EVENTS

On November 3, 2016, our Board of Directors declared a cash dividend on The Navigators Group, Inc. Common stock of $0.09 per share, payable on December 29, 2016 to Stockholders of record on November 18, 2016.

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Organization and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 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.  Certain amounts for the prior period have been reclassified to conform with the current period presentation.

Income Taxes

Income Taxes

The interim income tax provision has been computed based on our estimated annual Effective tax rate, which represents our best estimate on a year to date basis for the interim period.  As a result, the tax provision for a given quarter equals the difference between the provision recorded cumulatively year to date less the amount recorded cumulatively as of the end of the prior interim period.  Our Effective tax rate for the quarter and year to date differs from the federal tax rate of 35% primarily due to 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 Statements:

• Accounting Standards Update 2015-03 – Interest – Imputation of Interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs, which is 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 is 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 is  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 on 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.

• Accounting Standards Update 2016-13 – Financial Instruments – Credit Losses (Topic 326) – amends the measurement of credit losses on financial instruments not accounted for at fair value including loans, debt securities, reinsurance receivables and any other financial assets, which will be effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years.

• Accounting Standards Update 2016-15 – Statements of Cash Flows (Topic 230) – Classification of Certain Cash Receipts and Cash Payments amends how certain cash receipts and cash payments are presented in the statement of cash flows to reduce existing diversity in practice.

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)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Financial Data by Segment

Financial data by segment for the three and nine months ended September 30, 2016 and 2015 was as follows:

	Three Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	161,722		$	79,761		$	42,527		$	—		$	284,010
Net losses and LAE		(106,320	)		(45,043	)		(21,430	)		—			(172,793	)
Commission expenses		(18,630	)		(15,348	)		(8,951	)		318			(42,611	)
Other operating expenses		(31,517	)		(20,183	)		(4,437	)		—			(56,137	)
Other underwriting income (expense)		240			—			122			(318	)		44
Underwriting profit (loss)	$	5,495		$	(813	)	$	7,831		$	—		$	12,513
Net investment income											19,875			19,875
Net realized gains (losses)											1,586			1,586
Interest expense											(3,859	)		(3,859	)
Other income (loss)											(227	)		(227	)
Income before income taxes	$	5,495		$	(813	)	$	7,831		$	17,375		$	29,888
Income tax (expense) benefit											(7,875	)		(7,875	)
Net income (loss)													$	22,013
Losses and LAE ratio		65.7	%		56.5	%		50.4	%					60.8	%
Commission expense ratio		11.5	%		19.2	%		21.0	%					15.0	%
Other operating expense ratio (2)		19.4	%		25.3	%		10.2	%					19.8	%
Combined ratio		96.6	%		101.0	%		81.6	%					95.6	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Three Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	142,409		$	68,533		$	43,140		$	—		$	254,082
Net losses and LAE		(85,140	)		(39,182	)		(22,224	)		—			(146,546	)
Commission expenses		(15,157	)		(12,780	)		(7,705	)		1,389			(34,253	)
Other operating expenses		(32,948	)		(19,937	)		(3,714	)		—			(56,599	)
Other underwriting income (expense)		1,013			—			395			(1,389	)		19
Underwriting profit (loss)	$	10,177		$	(3,366	)	$	9,892		$	—		$	16,703
Net investment income											17,371			17,371
Net realized gains (losses)											(757	)		(757	)
Interest expense											(3,856	)		(3,856	)
Other income (loss)											(2,537	)		(2,537	)
Income before income taxes	$	10,177		$	(3,366	)	$	9,892		$	10,221		$	26,924
Income tax (expense) benefit											(8,723	)		(8,723	)
Net income (loss)													$	18,201
Losses and LAE ratio		59.8	%		57.2	%		51.5	%					57.7	%
Commission expense ratio		10.6	%		18.6	%		17.9	%					13.5	%
Other operating expense ratio (2)		22.5	%		29.1	%		7.7	%					22.2	%
Combined ratio		92.9	%		104.9	%		77.1	%					93.4	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Nine Months Ended September 30, 2016
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate (1)			Total
Net earned premiums	$	462,446		$	235,602		$	118,312		$	—		$	816,360
Net losses and LAE		(291,260	)		(133,519	)		(68,176	)		—			(492,955	)
Commission expenses		(50,379	)		(47,524	)		(24,188	)		1,200			(120,891	)
Other operating expenses		(96,848	)		(64,997	)		(14,175	)		—			(176,020	)
Other underwriting income (expense)		943			—			374			(1,200	)		117
Underwriting profit (loss)	$	24,902		$	(10,438	)	$	12,147		$	—		$	26,611
Net investment income											59,344			59,344
Net realized gains (losses)											4,993			4,993
Interest expense											(11,575	)		(11,575	)
Other income (loss)											6,679			6,679
Income (loss) before income taxes	$	24,902		$	(10,438	)	$	12,147		$	59,441		$	86,052
Income tax (expense) benefit											(24,917	)		(24,917	)
Net income (loss)													$	61,135
Losses and LAE ratio		63.0	%		56.7	%		57.6	%					60.4	%
Commission expense ratio		10.9	%		20.2	%		20.4	%					14.8	%
Other operating expense ratio (2)		20.7	%		27.5	%		11.7	%					21.5	%
Combined ratio		94.6	%		104.4	%		89.7	%					96.7	%

(1) - Includes Corporate segment intercompany eliminations.

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

	Nine Months Ended September 30, 2015
	U.S.			Int'l
amounts in thousands	Insurance			Insurance			GlobalRe			Corporate(1)			Total
Net earned premiums	$	410,804		$	197,244		$	124,494		$	—		$	732,542
Net losses and LAE		(247,094	)		(101,236	)		(70,387	)		—			(418,717	)
Commission expenses		(41,777	)		(35,491	)		(23,042	)		1,672			(98,638	)
Other operating expenses		(98,010	)		(54,312	)		(11,975	)		—			(164,297	)
Other underwriting income (expense)		1,330			—			441			(1,672	)		99
Underwriting profit (loss)	$	25,253		$	6,205		$	19,531		$	—		$	50,989
Net investment income											50,219			50,219
Net realized gains (losses)											8,755			8,755
Interest expense											(11,567	)		(11,567	)
Other income (loss)											(4,737	)		(4,737	)
Income (loss) before income taxes	$	25,253		$	6,205		$	19,531		$	42,670		$	93,659
Income tax (expense) benefit											(30,345	)		(30,345	)
Net income (loss)													$	63,314
Losses and LAE ratio		60.1	%		51.3	%		56.5	%					57.2	%
Commission expense ratio		10.2	%		18.0	%		18.5	%					13.5	%
Other operating expense ratio (2)		23.6	%		27.6	%		9.3	%					22.3	%
Combined ratio		93.9	%		96.9	%		84.3	%					93.0	%

(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 and nine months ended September 30, 2016 and 2015 was as follows:

	Three Months Ended September 30, 2016									Three Months Ended September 30, 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	$	40,271	$	(17,636	)	$	22,635	$	25,465	$	35,529	$	(13,865	)	$	21,664	$	24,292		13.3	%		27.2	%		4.5	%		4.8	%
P&C		161,600		(36,011	)		125,589		115,971		154,009		(34,902	)		119,107		104,473		4.9	%		3.2	%		5.4	%		11.0	%
ProfessionalLiability		32,776		(7,712	)		25,064		20,286		29,245		(14,986	)		14,259		13,644		12.1	%		(48.5	%)		75.8	%		48.7	%
Total	$	234,647	$	(61,359	)	$	173,288	$	161,722	$	218,783	$	(63,753	)	$	155,030	$	142,409		7.3	%		(3.8	%)		11.8	%		13.6	%
Int'l Insurance
Marine	$	38,453	$	(12,631	)	$	25,822	$	34,794	$	41,002	$	(10,985	)	$	30,017	$	36,792		(6.2	%)		15.0	%		(14.0	%)		(5.4	%)
P&C		38,077		(15,331	)		22,746		25,584		37,449		(20,034	)		17,415		16,879		1.7	%		(23.5	%)		30.6	%		51.6	%
Professional Liability		27,954		(7,232	)		20,722		19,383		20,337		(6,785	)		13,552		14,862		37.5	%		6.6	%		52.9	%		30.4	%
Total	$	104,484	$	(35,194	)	$	69,290	$	79,761	$	98,788	$	(37,804	)	$	60,984	$	68,533		5.8	%		(6.9	%)		13.6	%		16.4	%
GlobalRe	$	35,799	$	(1,376	)	$	34,423	$	42,527	$	36,491	$	(566	)	$	35,925	$	43,140		(1.9	%)		143.2	%		(4.2	%)		(1.4	%)
Total	$	374,930	$	(97,929	)	$	277,001	$	284,010	$	354,062	$	(102,123	)	$	251,939	$	254,082		5.9	%		(4.1	%)		9.9	%		11.8	%

	Nine Months Ended September 30, 2016									Nine Months Ended September 30, 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	$	129,621	$	(53,823	)	$	75,798	$	73,636	$	118,167	$	(45,177	)	$	72,990	$	74,193		9.7	%		19.1	%		3.8	%		(0.7	%)
P&C		471,532		(103,286	)		368,246		335,342		458,371		(123,765	)		334,606		291,648		2.9	%		(16.5	%)		10.1	%		15.0	%
ProfessionalLiability		88,065		(21,365	)		66,700		53,468		81,559		(42,423	)		39,136		44,963		8.0	%		(49.6	%)		70.4	%		18.9	%
Total	$	689,218	$	(178,474	)	$	510,744	$	462,446	$	658,097	$	(211,365	)	$	446,732	$	410,804		4.7	%		(15.6	%)		14.3	%		12.6	%
Int'l Insurance
Marine	$	151,548	$	(33,274	)	$	118,274	$	109,746	$	149,844	$	(30,933	)	$	118,911	$	114,716		1.1	%		7.6	%		(0.5	%)		(4.3	%)
P&C		145,125		(57,025	)		88,100		70,608		112,014		(60,676	)		51,338		43,112		29.6	%		(6.0	%)		71.6	%		63.8	%
ProfessionalLiability		87,694		(21,776	)		65,918		55,248		68,147		(22,072	)		46,075		39,416		28.7	%		(1.3	%)		43.1	%		40.2	%
Total	$	384,367	$	(112,075	)	$	272,292	$	235,602	$	330,005	$	(113,681	)	$	216,324	$	197,244		16.5	%		(1.4	%)		25.9	%		19.4	%
GlobalRe	$	127,787	$	(7,467	)	$	120,320	$	118,312	$	141,891	$	(5,806	)	$	136,085	$	124,494		(9.9	%)		28.6	%		(11.6	%)		(5.0	%)
Total	$	1,201,372	$	(298,016	)	$	903,356	$	816,360	$	1,129,993	$	(330,852	)	$	799,141	$	732,542		6.3	%		(9.9	%)		13.0	%		11.4	%

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Investments (Tables)

9 Months Ended

Sep. 30, 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 September 30, 2016 and December 31, 2015 and include Other-than-temporary-impairment (“OTTI”) securities recognized within Accumulated other comprehensive income (“AOCI”):

	September 30, 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	$	262,030	$	3,691	$	(3,981	)	$	262,320
States, municipalities and political subdivisions		580,324		29,288		(769	)		551,805
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		526,069		11,778		(105	)		514,396
Residential mortgage obligations		27,055		455		(97	)		26,697
Asset-backed securities		288,636		1,503		(458	)		287,591
Commercial mortgage-backed securities		165,405		6,392		(423	)		159,436
Subtotal	$	1,007,165	$	20,128	$	(1,083	)	$	988,120
Corporate bonds		810,898		23,447		(1,354	)		788,805
Total fixed maturities	$	2,660,417	$	76,554	$	(7,187	)	$	2,591,050
Equity securities		342,677		38,538		(1,767	)		305,906
Other invested assets		2,021		—		—			2,021
Short-term investments		134,273		—		—			134,273
Total investments	$	3,139,388	$	115,092	$	(8,954	)	$	3,033,250

	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 September 30, 2016 are shown in the following table:

	September 30, 2016
	Fair		Amortized
amounts in thousands	Value		Cost
Due in one year or less	$	81,849	$	83,551
Due after one year through five years		810,165		799,159
Due after five years through ten years		296,471		281,368
Due after ten years		464,767		438,852
Mortgage-backed and asset-backed securities		1,007,165		988,120
Total	$	2,660,417	$	2,591,050

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 September 30, 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:

	September 30, 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	$	91,676	$	(969	)	$	19,897	$	(3,012	)	$	111,573	$	(3,981	)
States, municipalities and political subdivisions		49,881		(593	)		9,932		(176	)		59,813		(769	)
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		52,754		(17	)		13,547		(88	)		66,301		(105	)
Residential mortgage obligations		1,317		(16	)		1,631		(81	)		2,948		(97	)
Asset-backed securities		22,422		(158	)		61,499		(300	)		83,921		(458	)
Commercial mortgage-backed securities		20,864		(38	)		8,854		(385	)		29,718		(423	)
Subtotal	$	97,357	$	(229	)	$	85,531	$	(854	)	$	182,888	$	(1,083	)
Corporate bonds		120,114		(622	)		23,053		(732	)		143,167		(1,354	)
Total fixed maturities	$	359,028	$	(2,413	)	$	138,413	$	(4,774	)	$	497,441	$	(7,187	)
Equity securities		38,050		(1,490	)		4,723		(277	)		42,773		(1,767	)
Total fixed maturities and equity securities	$	397,078	$	(3,903	)	$	143,136	$	(5,051	)	$	540,214	$	(8,954	)

	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	)

Summary of Cumulative Amounts Related to Credit Loss Portion of Other-Than-Temporary Impairment Losses on Debt Securities

The following table summarizes the cumulative amounts related to our Company’s credit loss portion of the OTTI losses on Fixed maturities for the three and nine months ended September 30, 2016 and 2015:  

	Three Months Ended September 30,					Nine Months Ended September 30,
amounts in thousands	2016			2015		2016			2015
Beginning balance	$	2,511		$	2,361	$	2,361		$	2,361
Additions for credit loss impairments recognized in the    current period on securities not previously impaired		—			—		150			—
Additions for credit loss impairments recognized in the    current period on securities previously impaired		—			—		—			—
Reductions for credit loss impairments previously recognized  on securities sold during the period		(150	)		—		(150	)		—
Ending balance	$	2,361		$	2,361	$	2,361		$	2,361

Net Investment Income

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

	Three Months Ended September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities	$	17,124		$	15,353		$	50,781		$	45,660
Equity securities		3,540			2,543			10,418			6,383
Short-term investments		70			272			568			604
Total investment income	$	20,734		$	18,168		$	61,767		$	52,647
Investment expenses		(859	)		(797	)		(2,423	)		(2,428	)
Net investment income	$	19,875		$	17,371		$	59,344		$	50,219

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 September 30,						Nine Months Ended September 30,
amounts in thousands	2016			2015			2016			2015
Fixed maturities:
Gains	$	1,356		$	484		$	5,200		$	2,889
Losses		(1,221	)		(667	)		(3,086	)		(2,757	)
Fixed maturities, net	$	135		$	(183	)	$	2,114		$	132
Short-term:
Gains	$	128		$	9		$	803		$	109
Losses		(107	)		(120	)		(250	)		(273	)
Short-term, net	$	21		$	(111	)	$	553		$	(164	)
Equity securities:
Gains	$	1,443		$	1,107		$	3,123		$	12,185
Losses		(13	)		(295	)		(647	)		(1,700	)
Equity securities, net	$	1,430		$	812		$	2,476		$	10,485
Net realized gains (losses)	$	1,586		$	518		$	5,143		$	10,453

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Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 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 above, 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 September 30, 2016 and December 31, 2015:

	September 30, 2016
amounts in thousands	Level 1		Level 2		Level 3		Fair Value based on net asset value		Total
Fixed maturities:
U.S.  Treasury bonds, agency bonds and    foreign government bonds	$	55,159	$	206,871	$	—	$	—	$	262,030
States, municipalities and political subdivisions		—		580,324		—		—		580,324
Mortgage-backed and asset-backed securities:
Agency mortgage-backed securities		—		526,069		—		—		526,069
Residential mortgage obligations		—		27,055		—		—		27,055
Asset-backed securities		—		288,636		—		—		288,636
Commercial mortgage-backed securities		—		165,405		—		—		165,405
Subtotal	$	—	$	1,007,165	$	—	$	—	$	1,007,165
Corporate bonds		—		810,898		—		—		810,898
Total fixed maturities	$	55,159	$	2,605,258	$	—	$	—	$	2,660,417
Equity securities		158,963		183,714		—				342,677
Other invested assets		—		—		—		2,021		2,021
Short-term investments		134,273		—		—		—		134,273
Total assets measured at fair value	$	348,395	$	2,788,972	$	—	$	2,021	$	3,139,388
Senior notes	$	—	$	294,080	$	—	$	—	$	294,080
Total liabilities measured at fair value	$	—	$	294,080	$	—	$	—	$	294,080

	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)	9 Months Ended
	Sep. 30, 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)	9 Months Ended
	Sep. 30, 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		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Net earned premiums		$ 284,010	$ 254,082	$ 816,360	$ 732,542
Net losses and LAE		(172,793)	(146,546)	(492,955)	(418,717)
Commission expenses		(42,611)	(34,253)	(120,891)	(98,638)
Other operating expenses		(56,137)	(56,599)	(176,020)	(164,297)
Other underwriting income (expense)		44	19	117	99
Underwriting profit (loss)		12,513	16,703	26,611	50,989
Net investment income		19,875	17,371	59,344	50,219
Net realized gains (losses)		1,586	(757)	4,993	8,755
Interest expense		(3,859)	(3,856)	(11,575)	(11,567)
Other income (loss)		(227)	(2,537)	6,679	(4,737)
Income before income taxes		29,888	26,924	86,052	93,659
Income tax (expense) benefit		(7,875)	(8,723)	(24,917)	(30,345)
Net income		$ 22,013	$ 18,201	$ 61,135	$ 63,314
Losses and LAE ratio		60.80%	57.70%	60.40%	57.20%
Commission expense ratio		15.00%	13.50%	14.80%	13.50%
Other operating expense ratio	[1]	19.80%	22.20%	21.50%	22.30%
Combined ratio		95.60%	93.40%	96.70%	93.00%
U.S.Insurance
Segment Reporting Information [Line Items]
Net earned premiums		$ 161,722	$ 142,409	$ 462,446	$ 410,804
Net losses and LAE		(106,320)	(85,140)	(291,260)	(247,094)
Commission expenses		(18,630)	(15,157)	(50,379)	(41,777)
Other operating expenses		(31,517)	(32,948)	(96,848)	(98,010)
Other underwriting income (expense)		240	1,013	943	1,330
Underwriting profit (loss)		5,495	10,177	24,902	25,253
Income before income taxes		$ 5,495	$ 10,177	$ 24,902	$ 25,253
Losses and LAE ratio		65.70%	59.80%	63.00%	60.10%
Commission expense ratio		11.50%	10.60%	10.90%	10.20%
Other operating expense ratio	[1]	19.40%	22.50%	20.70%	23.60%
Combined ratio		96.60%	92.90%	94.60%	93.90%
International Insurance
Segment Reporting Information [Line Items]
Net earned premiums		$ 79,761	$ 68,533	$ 235,602	$ 197,244
Net losses and LAE		(45,043)	(39,182)	(133,519)	(101,236)
Commission expenses		(15,348)	(12,780)	(47,524)	(35,491)
Other operating expenses		(20,183)	(19,937)	(64,997)	(54,312)
Underwriting profit (loss)		(813)	(3,366)	(10,438)	6,205
Income before income taxes		$ (813)	$ (3,366)	$ (10,438)	$ 6,205
Losses and LAE ratio		56.50%	57.20%	56.70%	51.30%
Commission expense ratio		19.20%	18.60%	20.20%	18.00%
Other operating expense ratio	[1]	25.30%	29.10%	27.50%	27.60%
Combined ratio		101.00%	104.90%	104.40%	96.90%
Global Reinsurance
Segment Reporting Information [Line Items]
Net earned premiums		$ 42,527	$ 43,140	$ 118,312	$ 124,494
Net losses and LAE		(21,430)	(22,224)	(68,176)	(70,387)
Commission expenses		(8,951)	(7,705)	(24,188)	(23,042)
Other operating expenses		(4,437)	(3,714)	(14,175)	(11,975)
Other underwriting income (expense)		122	395	374	441
Underwriting profit (loss)		7,831	9,892	12,147	19,531
Income before income taxes		$ 7,831	$ 9,892	$ 12,147	$ 19,531
Losses and LAE ratio		50.40%	51.50%	57.60%	56.50%
Commission expense ratio		21.00%	17.90%	20.40%	18.50%
Other operating expense ratio	[1]	10.20%	7.70%	11.70%	9.30%
Combined ratio		81.60%	77.10%	89.70%	84.30%
Corporate
Segment Reporting Information [Line Items]
Commission expenses	[2]	$ 318	$ 1,389	$ 1,200	$ 1,672
Other underwriting income (expense)	[2]	(318)	(1,389)	(1,200)	(1,672)
Net investment income	[2]	19,875	17,371	59,344	50,219
Net realized gains (losses)	[2]	1,586	(757)	4,993	8,755
Interest expense	[2]	(3,859)	(3,856)	(11,575)	(11,567)
Other income (loss)	[2]	(227)	(2,537)	6,679	(4,737)
Income before income taxes	[2]	17,375	10,221	59,441	42,670
Income tax (expense) benefit	[2]	$ (7,875)	$ (8,723)	$ (24,917)	$ (30,345)

[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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Gross written premiums	$ 374,930	$ 354,062	$ 1,201,372	$ 1,129,993
Ceded written premiums	(97,929)	(102,123)	(298,016)	(330,852)
Net written premiums	277,001	251,939	903,356	799,141
Net earned premiums	$ 284,010	254,082	$ 816,360	732,542
% Change Gross written premiums	5.90%		6.30%
% Change Ceded written premiums	(4.10%)		(9.90%)
% Change Net written premiums	9.90%		13.00%
% Change Net earned premiums	11.80%		11.40%
U.S.Insurance
Segment Reporting Information [Line Items]
Gross written premiums	$ 234,647	218,783	$ 689,218	658,097
Ceded written premiums	(61,359)	(63,753)	(178,474)	(211,365)
Net written premiums	173,288	155,030	510,744	446,732
Net earned premiums	$ 161,722	142,409	$ 462,446	410,804
% Change Gross written premiums	7.30%		4.70%
% Change Ceded written premiums	(3.80%)		(15.60%)
% Change Net written premiums	11.80%		14.30%
% Change Net earned premiums	13.60%		12.60%
U.S.Insurance | Marine
Segment Reporting Information [Line Items]
Gross written premiums	$ 40,271	35,529	$ 129,621	118,167
Ceded written premiums	(17,636)	(13,865)	(53,823)	(45,177)
Net written premiums	22,635	21,664	75,798	72,990
Net earned premiums	$ 25,465	24,292	$ 73,636	74,193
% Change Gross written premiums	13.30%		9.70%
% Change Ceded written premiums	27.20%		19.10%
% Change Net written premiums	4.50%		3.80%
% Change Net earned premiums	4.80%		(0.70%)
U.S.Insurance | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	$ 161,600	154,009	$ 471,532	458,371
Ceded written premiums	(36,011)	(34,902)	(103,286)	(123,765)
Net written premiums	125,589	119,107	368,246	334,606
Net earned premiums	$ 115,971	104,473	$ 335,342	291,648
% Change Gross written premiums	4.90%		2.90%
% Change Ceded written premiums	3.20%		(16.50%)
% Change Net written premiums	5.40%		10.10%
% Change Net earned premiums	11.00%		15.00%
U.S.Insurance | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	$ 32,776	29,245	$ 88,065	81,559
Ceded written premiums	(7,712)	(14,986)	(21,365)	(42,423)
Net written premiums	25,064	14,259	66,700	39,136
Net earned premiums	$ 20,286	13,644	$ 53,468	44,963
% Change Gross written premiums	12.10%		8.00%
% Change Ceded written premiums	(48.50%)		(49.60%)
% Change Net written premiums	75.80%		70.40%
% Change Net earned premiums	48.70%		18.90%
International Insurance
Segment Reporting Information [Line Items]
Gross written premiums	$ 104,484	98,788	$ 384,367	330,005
Ceded written premiums	(35,194)	(37,804)	(112,075)	(113,681)
Net written premiums	69,290	60,984	272,292	216,324
Net earned premiums	$ 79,761	68,533	$ 235,602	197,244
% Change Gross written premiums	5.80%		16.50%
% Change Ceded written premiums	(6.90%)		(1.40%)
% Change Net written premiums	13.60%		25.90%
% Change Net earned premiums	16.40%		19.40%
International Insurance | Marine
Segment Reporting Information [Line Items]
Gross written premiums	$ 38,453	41,002	$ 151,548	149,844
Ceded written premiums	(12,631)	(10,985)	(33,274)	(30,933)
Net written premiums	25,822	30,017	118,274	118,911
Net earned premiums	$ 34,794	36,792	$ 109,746	114,716
% Change Gross written premiums	(6.20%)		1.10%
% Change Ceded written premiums	15.00%		7.60%
% Change Net written premiums	(14.00%)		(0.50%)
% Change Net earned premiums	(5.40%)		(4.30%)
International Insurance | Property Casualty
Segment Reporting Information [Line Items]
Gross written premiums	$ 38,077	37,449	$ 145,125	112,014
Ceded written premiums	(15,331)	(20,034)	(57,025)	(60,676)
Net written premiums	22,746	17,415	88,100	51,338
Net earned premiums	$ 25,584	16,879	$ 70,608	43,112
% Change Gross written premiums	1.70%		29.60%
% Change Ceded written premiums	(23.50%)		(6.00%)
% Change Net written premiums	30.60%		71.60%
% Change Net earned premiums	51.60%		63.80%
International Insurance | Professional Liability
Segment Reporting Information [Line Items]
Gross written premiums	$ 27,954	20,337	$ 87,694	68,147
Ceded written premiums	(7,232)	(6,785)	(21,776)	(22,072)
Net written premiums	20,722	13,552	65,918	46,075
Net earned premiums	$ 19,383	14,862	$ 55,248	39,416
% Change Gross written premiums	37.50%		28.70%
% Change Ceded written premiums	6.60%		(1.30%)
% Change Net written premiums	52.90%		43.10%
% Change Net earned premiums	30.40%		40.20%
Global Reinsurance
Segment Reporting Information [Line Items]
Gross written premiums	$ 35,799	36,491	$ 127,787	141,891
Ceded written premiums	(1,376)	(566)	(7,467)	(5,806)
Net written premiums	34,423	35,925	120,320	136,085
Net earned premiums	$ 42,527	$ 43,140	$ 118,312	$ 124,494
% Change Gross written premiums	(1.90%)		(9.90%)
% Change Ceded written premiums	143.20%		28.60%
% Change Net written premiums	(4.20%)		(11.60%)
% Change Net earned premiums	(1.40%)		(5.00%)

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Investments Including Other-Than-Temporarily Impaired Securities Recognized within Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Gain (Loss) on Investments [Line Items]
Total investments	$ 3,139,388	$ 2,937,226
Gross Unrealized Gains	115,092	66,693
Gross Unrealized Losses	(8,954)	(29,398)
Amortized Cost	3,033,250	2,899,931
Fixed maturities
Gain (Loss) on Investments [Line Items]
Total investments	2,660,417	2,414,210
Gross Unrealized Gains	76,554	40,350
Gross Unrealized Losses	(7,187)	(26,385)
Amortized Cost	2,591,050	2,400,245
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign
Gain (Loss) on Investments [Line Items]
Total investments	262,030	252,882
Gross Unrealized Gains	3,691	2,273
Gross Unrealized Losses	(3,981)	(9,214)
Amortized Cost	262,320	259,823
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Total investments	580,324	576,859
Gross Unrealized Gains	29,288	21,233
Gross Unrealized Losses	(769)	(781)
Amortized Cost	551,805	556,407
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	526,069	379,269
Gross Unrealized Gains	11,778	5,573
Gross Unrealized Losses	(105)	(2,082)
Amortized Cost	514,396	375,778
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Total investments	27,055	30,465
Gross Unrealized Gains	455	694
Gross Unrealized Losses	(97)	(82)
Amortized Cost	26,697	29,853
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	288,636	225,012
Gross Unrealized Gains	1,503	85
Gross Unrealized Losses	(458)	(1,624)
Amortized Cost	287,591	226,551
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	165,405	189,713
Gross Unrealized Gains	6,392	3,119
Gross Unrealized Losses	(423)	(1,864)
Amortized Cost	159,436	188,458
Fixed maturities | Mortgage-backed and asset-backed securities
Gain (Loss) on Investments [Line Items]
Total investments	1,007,165	824,459
Gross Unrealized Gains	20,128	9,471
Gross Unrealized Losses	(1,083)	(5,652)
Amortized Cost	988,120	820,640
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Total investments	810,898	760,010
Gross Unrealized Gains	23,447	7,373
Gross Unrealized Losses	(1,354)	(10,738)
Amortized Cost	788,805	763,375
Equity Securities
Gain (Loss) on Investments [Line Items]
Total investments	342,677	305,271
Gross Unrealized Gains	38,538	26,341
Gross Unrealized Losses	(1,767)	(3,013)
Amortized Cost	305,906	281,943
Short-term investments
Gain (Loss) on Investments [Line Items]
Total investments	134,273	217,745
Gross Unrealized Gains		2
Amortized Cost	134,273	$ 217,743
Other Invested Assets
Gain (Loss) on Investments [Line Items]
Total investments	2,021
Amortized Cost	$ 2,021

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Investments - Additional Information (Detail) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Security	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) Security
Schedule of Investments [Line Items]
Non-credit OTTI on fixed maturities in a net unrealized net gain position		$ 400		$ 500
Gross Unrealized Loss		8,954		$ 29,398
OTTI losses	$ 1,275	$ 150	$ 1,698
Equity Securities
Schedule of Investments [Line Items]
Number of securities in unrealized loss position | Security		42		57
Gross Unrealized Loss		$ 1,767		$ 3,013
Fixed maturities
Schedule of Investments [Line Items]
Number of securities in unrealized loss position | Security		177		368
Gross Unrealized Loss		$ 7,187		$ 26,385
OTTI losses		200
Equity Portfolio
Schedule of Investments [Line Items]
OTTI losses	$ 1,300		$ 1,700
Non-government-backed securities
Schedule of Investments [Line Items]
Gross Unrealized Loss		$ 400		$ 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		$ 1,083		$ 5,652

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Scheduled Maturity Dates for Fixed Maturity Securities by Number of Years Until Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value
Due in one year or less	$ 81,849
Due after one year through five years	810,165
Due after five years through ten years	296,471
Due after ten years	464,767
Mortgage-backed and asset-backed securities	1,007,165
Total	2,660,417	$ 2,414,210
Amortized Cost
Due in one year or less	83,551
Due after one year through five years	799,159
Due after five years through ten years	281,368
Due after ten years	438,852
Mortgage-backed and asset-backed securities	988,120
Total	$ 2,591,050	$ 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	Sep. 30, 2016	Dec. 31, 2015
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	$ 397,078	$ 1,010,970
Less than 12 months Gross Unrealized Losses	(3,903)	(20,517)
Greater than 12 months Fair Value	143,136	156,975
Greater than 12 months Gross Unrealized Losses	(5,051)	(8,881)
Fair Value	540,214	1,167,945
Gross Unrealized Losses	(8,954)	(29,398)
Fixed maturities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	359,028	952,439
Less than 12 months Gross Unrealized Losses	(2,413)	(17,504)
Greater than 12 months Fair Value	138,413	156,975
Greater than 12 months Gross Unrealized Losses	(4,774)	(8,881)
Fair Value	497,441	1,109,414
Gross Unrealized Losses	(7,187)	(26,385)
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	91,676	142,233
Less than 12 months Gross Unrealized Losses	(969)	(3,032)
Greater than 12 months Fair Value	19,897	22,230
Greater than 12 months Gross Unrealized Losses	(3,012)	(6,182)
Fair Value	111,573	164,463
Gross Unrealized Losses	(3,981)	(9,214)
Fixed maturities | States, municipalities and political subdivisions
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	49,881	50,577
Less than 12 months Gross Unrealized Losses	(593)	(549)
Greater than 12 months Fair Value	9,932	4,808
Greater than 12 months Gross Unrealized Losses	(176)	(232)
Fair Value	59,813	55,385
Gross Unrealized Losses	(769)	(781)
Fixed maturities | Agency mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	52,754	164,817
Less than 12 months Gross Unrealized Losses	(17)	(1,315)
Greater than 12 months Fair Value	13,547	29,862
Greater than 12 months Gross Unrealized Losses	(88)	(767)
Fair Value	66,301	194,679
Gross Unrealized Losses	(105)	(2,082)
Fixed maturities | Residential Mortgage Backed Securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	1,317	3,910
Less than 12 months Gross Unrealized Losses	(16)	(5)
Greater than 12 months Fair Value	1,631	1,684
Greater than 12 months Gross Unrealized Losses	(81)	(77)
Fair Value	2,948	5,594
Gross Unrealized Losses	(97)	(82)
Fixed maturities | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	22,422	112,479
Less than 12 months Gross Unrealized Losses	(158)	(663)
Greater than 12 months Fair Value	61,499	81,477
Greater than 12 months Gross Unrealized Losses	(300)	(961)
Fair Value	83,921	193,956
Gross Unrealized Losses	(458)	(1,624)
Fixed maturities | Commercial mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	20,864	83,024
Less than 12 months Gross Unrealized Losses	(38)	(1,826)
Greater than 12 months Fair Value	8,854	3,065
Greater than 12 months Gross Unrealized Losses	(385)	(38)
Fair Value	29,718	86,089
Gross Unrealized Losses	(423)	(1,864)
Fixed maturities | Mortgage-backed and asset-backed securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	97,357	364,230
Less than 12 months Gross Unrealized Losses	(229)	(3,809)
Greater than 12 months Fair Value	85,531	116,088
Greater than 12 months Gross Unrealized Losses	(854)	(1,843)
Fair Value	182,888	480,318
Gross Unrealized Losses	(1,083)	(5,652)
Fixed maturities | Corporate bonds
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	120,114	395,399
Less than 12 months Gross Unrealized Losses	(622)	(10,114)
Greater than 12 months Fair Value	23,053	13,849
Greater than 12 months Gross Unrealized Losses	(732)	(624)
Fair Value	143,167	409,248
Gross Unrealized Losses	(1,354)	(10,738)
Equity Securities
Gain (Loss) on Investments [Line Items]
Less than 12 months Fair Value	38,050	58,531
Less than 12 months Gross Unrealized Losses	(1,490)	(3,013)
Greater than 12 months Fair Value	4,723
Greater than 12 months Gross Unrealized Losses	(277)
Fair Value	42,773	58,531
Gross Unrealized Losses	$ (1,767)	$ (3,013)

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Summary of Cumulative Amounts Related to Credit Loss Portion of Other-Than-Temporary Impairment Losses on Debt Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Investments Debt And Equity Securities [Abstract]
Beginning balance	$ 2,511	$ 2,361	$ 2,361	$ 2,361
Additions for credit loss impairments recognized in the current period on securities not previously impaired	0	0	150	0
Additions for credit loss impairments recognized in the current period on securities previously impaired	0	0	0	0
Reductions for credit loss impairments previously recognized on securities sold during the period	(150)	0	(150)	0
Ending balance	$ 2,361	$ 2,361	$ 2,361	$ 2,361

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Net Investment Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net Investment Income [Line Items]
Investment Income	$ 20,734	$ 18,168	$ 61,767	$ 52,647
Investment expenses	(859)	(797)	(2,423)	(2,428)
Net investment income	19,875	17,371	59,344	50,219
Fixed maturities
Net Investment Income [Line Items]
Investment Income	17,124	15,353	50,781	45,660
Equity Securities
Net Investment Income [Line Items]
Investment Income	3,540	2,543	10,418	6,383
Short-term investments
Net Investment Income [Line Items]
Investment Income	$ 70	$ 272	$ 568	$ 604

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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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Gain (Loss) on Investments [Line Items]
Net realized gains (losses)	$ 1,586	$ 518	$ 5,143	$ 10,453
Fixed maturities
Gain (Loss) on Investments [Line Items]
Gains	1,356	484	5,200	2,889
Losses	(1,221)	(667)	(3,086)	(2,757)
Net realized gains (losses)	135	(183)	2,114	132
Short-term investments
Gain (Loss) on Investments [Line Items]
Gains	128	9	803	109
Losses	(107)	(120)	(250)	(273)
Net realized gains (losses)	21	(111)	553	(164)
Equity Securities
Gain (Loss) on Investments [Line Items]
Gains	1,443	1,107	3,123	12,185
Losses	(13)	(295)	(647)	(1,700)
Net realized gains (losses)	$ 1,430	$ 812	$ 2,476	$ 10,485

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Fair Value Measurement - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 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
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	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	$ 3,139,388	$ 2,937,226
Total liabilities measured at fair value	294,080	282,486
Other Invested Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,021
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	348,395	411,594
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,788,972	2,525,632
Total liabilities measured at fair value	294,080	282,486
Fair Value Based on Net Asset Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,021
Fair Value Based on Net Asset Value | Other Invested Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,021
Fixed maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,660,417	2,414,210
Fixed maturities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	55,159	67,394
Fixed maturities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	2,605,258	2,346,816
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	262,030	252,882
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	55,159	67,394
Fixed maturities | U.S. Treasury bonds, agency bonds, and foreign | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	206,871	185,488
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	580,324	576,859
Fixed maturities | States, municipalities and political subdivisions | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	580,324	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	526,069	379,269
Fixed maturities | Agency mortgage-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	526,069	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	27,055	30,465
Fixed maturities | Residential Mortgage Backed Securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	27,055	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	288,636	225,012
Fixed maturities | Asset-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	288,636	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	165,405	189,713
Fixed maturities | Commercial mortgage-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	165,405	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	1,007,165	824,459
Fixed maturities | Mortgage-backed and asset-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	1,007,165	824,459
Fixed maturities | Corporate bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	810,898	760,010
Fixed maturities | Corporate bonds | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	810,898	760,010
Equity Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	342,677	305,271
Equity Securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	158,963	126,455
Equity Securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	183,714	178,816
Short-term investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities and equity securities, at fair Value	134,273	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	134,273	217,745
Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes, at fair value	294,080	282,486
Senior Notes | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes, at fair value	$ 294,080	$ 282,486

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Ceded Reinsurance - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Insurance [Abstract]
Reinsurance recoverables	$ 1,100.0
Reserve for uncollectible reinsurance amount	$ 10.4	$ 6.9

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Commitments, Contingencies & Guarantees - Additional Information (Detail) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 20, 2015	Sep. 30, 2013	Sep. 30, 2016	Sep. 30, 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	1.1
Incentive awarded to the company by the State of Connecticut, deferred revenue		$ 7.5	$ 5.1	$ 5.1	$ 6.3

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Stock-Based Compensation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 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	216,973
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	$ 92.56

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Stockholders Equity - Additional Information (Detail) - $ / shares			9 Months Ended
	Sep. 30, 2016	Jul. 15, 2016	Sep. 30, 2016
Stockholders Equity [Line Items]
Dividend declaration date			May 26, 2016
Installment 1 - FY 2016
Stockholders Equity [Line Items]
Common stock dividend paid per share		$ 0.09
Cash Dividend Paid Date			Jul. 15, 2016
Dividend payable record date			Jun. 20, 2016
Installment 2 - FY 2016
Stockholders Equity [Line Items]
Common stock dividend paid per share	$ 0.09
Cash Dividend Paid Date			Sep. 30, 2016
Dividend payable record date			Aug. 19, 2016

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Subsequent Events - Additional Information (Detail) - $ / shares		9 Months Ended
	Nov. 03, 2016	Sep. 30, 2016
Subsequent Event [Line Items]
Dividend declaration date		May 26, 2016
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividend declaration date	Nov. 03, 2016
Dividend payable date	Dec. 29, 2016
Dividend payable record date	Nov. 18, 2016
Common stock dividend declared per share	$ 0.09