Selective Insurance (SIGI) 10-Q 30 Jul 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 15, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Entity Registrant Name	SELECTIVE INSURANCE GROUP INC
Entity Central Index Key	230,557
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock , Shares Outstanding		57,110,201

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Fixed income securities, held-to-maturity – at carrying value (fair value: $259,702 – 2015; $333,961 – 2014)	$ 247,859	$ 318,137
Fixed income securities, available-for-sale – at fair value (amortized cost: $4,133,223 – 2015; $3,975,786 – 2014)	4,192,818	4,066,122
Equity securities, available-for-sale – at fair value (cost: $218,138 – 2015; $159,011 – 2014)	228,883	191,400
Short-term investments (at cost which approximates fair value)	168,349	131,972
Other investments	85,420	99,203
Total investments	4,923,329	4,806,834
Cash	368	23,959
Interest and dividends due or accrued	38,488	38,901
Premiums receivable, net of allowance for uncollectible accounts of: $4,210 – 2015; $4,137 – 2014	647,591	558,778
Reinsurance recoverables, net	572,502	581,548
Prepaid reinsurance premiums	145,286	146,993
Deferred federal income tax	106,152	98,449
Property and equipment – at cost, net of accumulated depreciation and amortization of: $180,146 – 2015; $172,183 – 2014	62,182	59,416
Deferred policy acquisition costs	203,224	185,608
Goodwill	7,849	7,849
Other assets	77,342	73,215
Total assets	6,784,313	6,581,550
Liabilities And Stockholders' Equity
Reserve for loss and loss expenses	3,535,433	3,477,870
Unearned premiums	1,177,901	1,095,819
Notes payable	394,305	379,297
Current federal income tax	13,562	3,921
Accrued salaries and benefits	140,211	158,382
Other liabilities	212,588	190,675
Total liabilities	5,474,000	5,305,964
Stockholders' Equity:
Preferred stock of $0 par value per share: Authorized shares: 5,000,000; no shares issued or outstanding	0	0
Common stock of $2 par value per share Authorized shares: 360,000,000 Issued: 100,585,852 – 2015; 99,947,933 – 2014	201,172	199,896
Additional paid-in capital	317,295	305,385
Retained earnings	1,370,681	1,313,440
Accumulated other comprehensive (loss) income	(12,329)	19,788
Treasury stock - at cost (shares: 43,482,533 – 2015; 43,353,181 – 2014)	(566,506)	(562,923)
Total stockholders' equity	$ 1,310,313	$ 1,275,586
Commitments and contingencies
Total liabilities and stockholders' equity	$ 6,784,313	$ 6,581,550

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - Class of Stock [Domain] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fixed income securities, held-to-maturity, fair value	$ 259,702	$ 333,961
Fixed income securities, available-for-sale, amortized cost	4,133,223	3,975,786
Equity securities, available-for-sale, cost	218,138	159,011
Premiums receivable, allowance for uncollectible accounts	4,210	4,137
Property and equipment - at cost, accumulated depreciation and amortization	$ 180,146	$ 172,183
Preferred stock, par value per share	$ 0	$ 0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value per share	$ 2	$ 2
Common stock, shares authorized	360,000,000	360,000,000
Common stock, shares issued	100,585,852	99,947,933
Treasury stock - at cost, shares	43,482,533	43,353,181

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Net premiums earned	$ 490,309	$ 463,625	$ 966,432	$ 920,120
Net investment income earned	32,230	36,774	59,147	72,308
Net realized (losses) gains:
Net realized investment gains	1,031	4,958	22,008	13,139
Other-than-temporary impairments	(4,451)	(419)	(6,545)	(1,382)
Total net realized (losses) gains	(3,420)	4,539	15,463	11,757
Other income	2,854	1,911	4,823	11,735
Total revenues	521,973	506,849	1,045,865	1,015,920
Expenses:
Loss and loss expense incurred	291,561	297,795	576,560	618,341
Policy acquisition costs	169,770	155,173	334,493	304,439
Interest expense	5,490	5,425	10,969	10,986
Other expenses	8,387	8,935	20,788	17,549
Total expenses	475,208	467,328	942,810	951,315
Income before federal income tax	46,765	39,521	103,055	64,605
Federal income tax expense:
Current	7,733	8,781	19,987	15,319
Deferred	5,264	1,399	9,592	1,971
Total federal income tax expense	12,997	10,180	29,579	17,290
Net income	$ 33,768	$ 29,341	$ 73,476	$ 47,315
Earnings per share:
Basic net income	$ 0.59	$ 0.52	$ 1.29	$ 0.84
Diluted net income	0.58	0.51	1.27	0.83
Dividends to stockholders	$ 0.14	$ 0.13	$ 0.28	$ 0.26

Consolidation Statements of Com

Consolidation Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income	$ 33,768	$ 29,341	$ 73,476	$ 47,315
Unrealized holding (losses) gains arising during period	(39,160)	29,329	(23,574)	50,755
Amount reclassified into net income: Held-to-maturity securities	(120)	(144)	(290)	(440)
Amount reclassified into net income: Non-credit other-than-temporary impairments	0	305	232	305
Amount reclassified into net income: Realized losses (gains) on available for sale securities	2,225	(3,255)	(10,707)	(7,954)
Total unrealized (losses) gains on investment securities	(37,055)	26,235	(34,339)	42,666
Amount reclassified into net income: Net actuarial loss	1,111	248	2,222	495
Total defined benefit pension and post-retirement plans	1,111	248	2,222	495
Other comprehensive (loss) income	(35,944)	26,483	(32,117)	43,161
Comprehensive (loss) income	$ (2,176)	$ 55,824	$ 41,359	$ 90,476

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Accumulated other comprehensive income (loss) [Member]	Treasury stock [Member]
Beginning of year at Dec. 31, 2013		$ 198,240	$ 288,182	$ 1,202,015	$ 24,851	$ (559,360)
Dividend reinvestment plan (shares: 26,843 – 2015; 29,949 - 2014)		60	642
Stock purchase and compensation plans (shares: 611,076 - 2015; 547,190 - 2014)		1,095	9,528
Net income	$ 47,315			47,315
Dividends to stockholders ($0.28 per share - 2015; $0.26 per share - 2014)				(14,868)
Other comprehensive (loss) income	43,161				43,161
Acquisition of treasury stock (shares: 129,352 - 2015; 124,819 - 2014)						(2,786)
End of period at Jun. 30, 2014	1,238,075	199,395	298,352	1,234,462	68,012	(562,146)
Beginning of year at Dec. 31, 2014	1,275,586	199,896	305,385	1,313,440	19,788	(562,923)
Dividend reinvestment plan (shares: 26,843 – 2015; 29,949 - 2014)		54	677
Stock purchase and compensation plans (shares: 611,076 - 2015; 547,190 - 2014)		1,222	11,233
Net income	73,476			73,476
Dividends to stockholders ($0.28 per share - 2015; $0.26 per share - 2014)				(16,235)
Other comprehensive (loss) income	(32,117)				(32,117)
Acquisition of treasury stock (shares: 129,352 - 2015; 124,819 - 2014)						(3,583)
End of period at Jun. 30, 2015	$ 1,310,313	$ 201,172	$ 317,295	$ 1,370,681	$ (12,329)	$ (566,506)

Consolidated Statements of Sto7

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Dividend reinvestment plan, shares	26,843	29,949
Stock purchase and compensation plans, shares	611,076	547,190
Dividends to stockholders, per share	$ 0.28	$ 0.26
Acquisition of treasury stock, shares	129,352	124,819
Preferred stock, par value per share	$ 0	$ 0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Series A Preferred Stock [Member]
Preferred stock, par value per share	$ 0	$ 0
Preferred stock, shares authorized	300,000	300,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flow - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating Activities
Net income	$ 73,476	$ 47,315
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,085	18,912
Sale of renewal rights	0	(8,000)
Stock-based compensation expense	6,049	6,102
Undistributed losses (gains) of equity method investments	2,117	(138)
Net realized gains	(15,463)	(11,757)
Changes in assets and liabilities:
Increase in reserve for loss and loss expenses, net of reinsurance recoverables	66,609	93,675
Increase in unearned premiums, net of prepaid reinsurance	83,789	36,453
Decrease in net federal income taxes	19,232	12,634
Increase in premiums receivable	(88,813)	(64,747)
Increase in deferred policy acquisition costs	(17,616)	(9,106)
Decrease (increase) in interest and dividends due or accrued	395	(361)
Decrease in accrued salaries and benefits	(18,171)	(26,557)
Decrease in accrued insurance expenses	(5,091)	(16,872)
Increase (decrease) in other assets and other liabilities	29,999	(4,881)
Net adjustments	92,121	25,357
Net cash provided by operating activities	165,597	72,672
Investing Activities
Purchase of fixed income securities, available-for-sale	(463,758)	(339,362)
Purchase of equity securities, available-for-sale	(177,386)	(111,886)
Purchase of other investments	(2,947)	(6,039)
Purchase of short-term investments	(732,278)	(764,692)
Sale of fixed income securities, available-for-sale	22,323	19,557
Sale of short-term investments	695,901	772,455
Redemption and maturities of fixed income securities, held-to-maturity	68,704	28,595
Redemption and maturities of fixed income securities, available-for-sale	254,995	222,568
Sale of equity securities, available-for-sale	135,548	111,996
Distributions from other investments	17,840	7,726
Purchase of property and equipment	(7,591)	(6,628)
Sale of renewal rights	0	8,000
Net cash used in investing activities	(188,649)	(57,710)
Financing Activities
Dividends to stockholders	(15,211)	(13,914)
Acquisition of treasury stock	(3,583)	(2,786)
Net proceeds from stock purchase and compensation plans	4,037	3,091
Proceeds from borrowings	15,000	0
Excess tax benefits from share-based payment arrangements	1,549	955
Repayments of capital lease obligations	(2,331)	(954)
Net cash used in financing activities	(539)	(13,608)
Net (decrease) increase in cash	(23,591)	1,354
Cash, beginning of year	23,959	193
Cash, end of period	$ 368	$ 1,547

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Basis of Presentation And Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation As used herein, the "Company,” “we,” “us,” or “our” refers to Selective Insurance Group, Inc. (the "Parent"), and its subsidiaries, except as expressly indicated or unless the context otherwise requires. Our interim unaudited consolidated financial statements (“Financial Statements”) have been prepared by us in conformity with U.S. generally accepted accounting principles (“GAAP”) and the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. The preparation of the Financial Statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported financial statement balances, as well as the disclosure of contingent assets and liabilities. Actual results could differ from those estimates. All significant intercompany accounts and transactions between the Parent and its subsidiaries are eliminated in consolidation. Certain amounts in the prior years' Financial Statements and related notes have been reclassified to conform to the 2015 presentation. Such reclassifications had no effect on our net income, stockholders' equity, or cash flows. Our Financial Statements reflect all adjustments that, in our opinion, are normal, recurring, and necessary for a fair presentation of our results of operations and financial condition. Our Financial Statements cover the second quarters ended June 30, 2015 (“ Second Quarter 2015 ”) and June 30, 2014 (“ Second Quarter 2014 ”) and the six -month periods ended June 30, 2015 (" Six Months 2015 ") and June 30, 2014 (" Six Months 2014 "). The Financial Statements do not include all of the information and disclosures required by GAAP and the SEC for audited annual financial statements. Results of operations for any interim period are not necessarily indicative of results for a full year. Consequently, our Financial Statements should be read in conjunction with the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2014 (“ 2014 Annual Report ”) filed with the SEC.

Accounting Pronouncements

Accounting Pronouncements	6 Months Ended
	Jun. 30, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Pronouncements	Accounting Pronouncements In June 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (“ASU 2014-12”). ASU 2014-12 requires that performance targets that affect vesting and could be achieved after the requisite service period be treated as performance conditions. The effective date for ASU 2014-12 is for interim and annual periods beginning after December 15, 2015. The amendments in ASU 2014-12 may be applied either prospectively to all awards granted or modified after the effective date or retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented and all modified awards thereafter. The adoption of ASU 2014-12 will not affect us, as we are currently recording expense consistent with the requirements of this accounting update. In August 2014, the FASB issued ASU 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”). ASU 2014-15 is intended to define management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and provide related footnote disclosures. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and interim periods within annual periods beginning after December 15, 2016. Early application is permitted. As the requirements of this literature are disclosure only, ASU 2014-15 will not impact our financial condition or results of operations. In February 2015, the FASB issued ASU 2015-02, Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 affects the following areas: (i) limited partnerships and similar legal entities; (ii) the evaluation of fees paid to a decision maker or a service provider as a variable interest; (iii) the effect of fee arrangements on the primary beneficiary determination; (iv) the effect of related parties on the primary beneficiary determination; and (v) certain investment funds. ASU 2015-02 is effective for interim and annual reporting periods beginning after December 15, 2015. The amendments in ASU 2015-02 may be applied either retrospectively or by applying a modified retrospective approach, which would include recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption. While we are currently evaluating ASU 2015-02, we do not expect a material impact on our financial condition or results of operations from the adoption of this guidance. In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). ASU 2015-03 requires debt issuance costs to be netted against the related debt liability in the balance sheet rather than presented as a separate asset. ASU 2015-03 is effective for interim and annual reporting periods beginning after December 15, 2015. Early adoption is permitted. The amendments in ASU 2015-03 should be applied on a retrospective basis. As the requirements of this literature are disclosure only, ASU 2015-03 will not impact our financial condition or results of operations. In April 2015, the FASB issued ASU 2015-05, Customer's Accounting for Fees Paid in a Cloud Computing Arrangement (“ASU 2015-05”). ASU 2015-05 provides guidance to customers with cloud computing arrangements that include a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU 2015-05 is effective for interim and annual reporting periods beginning after December 15, 2015. Early adoption is permitted. The amendments in ASU 2015-05 can be adopted either prospectively to all arrangements entered into or materially modified after the effective date or retrospectively. While we are currently evaluating ASU 2015-05, we do not expect a material impact on our financial condition or results of operations from the adoption of this guidance. In May 2015, the FASB issued ASU 2015-07, Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) (“ASU 2015-07”). ASU 2015-07 provides guidance that investments for which the practical expedient is used to measure fair value at net asset value per share ("NAV") must be removed from the fair value hierarchy. Instead, those investments must be included as a reconciling line item so that the total fair value amount of investments in the disclosure is consistent with the amount on the balance sheet. ASU 2015-07 also includes disclosure requirements for investments for which the NAV practical expedient was used to determine fair value. ASU 2015-07 is effective for interim and annual reporting periods beginning after December 15, 2015. Early adoption is permitted. The amendments in ASU 2015-07 should be applied retrospectively to all periods presented. As the requirements of this literature are disclosure only, the application of this guidance will not impact our financial condition or results of operations. In May 2015, the FASB issued ASU 2015-09, Disclosures about Short-Duration Contracts (“ASU 2015-09”). ASU 2015-09 requires companies that issue short duration contracts to disclose additional information, including: (i) incurred and paid claims development tables; (ii) frequency and severity of claims; and (iii) information about material changes in judgments made in calculating the liability for unpaid claim adjustment expenses, including reasons for the change and the effects on the financial statements. ASU 2015-09 is effective for annual periods beginning after December 15, 2015, and interim periods within annual periods beginning after December 15, 2016. The amendments in ASU 2015-09 should be applied retrospectively by providing comparative disclosures for each period presented, except for those requirements that apply only to the current period. As the requirements of this literature are disclosure only, the application of this guidance will not impact our financial condition or results of operations.

Statements of Cash Flow

Statements of Cash Flow	6 Months Ended
	Jun. 30, 2015
Supplemental Cash Flow Information [Abstract]
Statements of Cash Flow	Statements of Cash Flow Supplemental cash flow information is as follows: Six Months ended June 30, ($ in thousands) 2015 2014 Cash paid during the period for: Interest $ 10,947 11,113 Federal income tax 8,500 3,699 Non-cash items: Tax-free exchange of fixed income securities, available-for-sale ("AFS") 17,120 9,180 Tax-free exchange of fixed income securities, held-to-maturity ("HTM") — 15 Corporate actions related to equity securities, AFS 1 884 334 Assets acquired under capital lease arrangements 3,478 2,124 1 Examples of such corporate actions include non-cash acquisitions and stock splits. Included in "Other assets" on the Consolidated Balance Sheet was $5.2 million at June 30, 2015 and $8.5 million at June 30, 2014 of cash received from the National Flood Insurance Program ("NFIP"), which is restricted to pay flood claims under the Write Your Own ("WYO") program.

Investments

Investments	6 Months Ended
	Jun. 30, 2015
Investments [Abstract]
Investments	Investments (a) The amortized cost, net unrealized gains and losses, carrying value, unrecognized holding gains and losses, and fair value of HTM fixed income securities as of June 30, 2015 and December 31, 2014 were as follows: June 30, 2015 ($ in thousands) Amortized Cost Net Unrealized Gains (Losses) Carrying Value Unrecognized Holding Gains Unrecognized Holding Losses Fair Value Foreign government $ 5,292 3 5,295 — (3 ) 5,292 Obligations of states and political subdivisions 216,870 1,395 218,265 8,441 — 226,706 Corporate securities 18,532 (265 ) 18,267 2,565 — 20,832 Asset-backed securities (“ABS”) 1,976 (280 ) 1,696 285 — 1,981 Commercial mortgage-backed securities (“CMBS”) 4,676 (340 ) 4,336 555 — 4,891 Total HTM fixed income securities $ 247,346 513 247,859 11,846 (3 ) 259,702 December 31, 2014 ($ in thousands) Amortized Cost Net Unrealized Gains (Losses) Carrying Value Unrecognized Holding Gains Unrecognized Holding Losses Fair Value Foreign government $ 5,292 47 5,339 55 — 5,394 Obligations of states and political subdivisions 285,301 2,071 287,372 11,760 — 299,132 Corporate securities 18,899 (273 ) 18,626 2,796 — 21,422 ABS 2,818 (455 ) 2,363 460 — 2,823 CMBS 4,869 (432 ) 4,437 753 — 5,190 Total HTM fixed income securities $ 317,179 958 318,137 15,824 — 333,961 Unrecognized holding gains and losses of HTM securities are not reflected in the Financial Statements, as they represent fair value fluctuations from the later of: (i) the date a security is designated as HTM; or (ii) the date that an other-than-temporary impairment (“OTTI”) charge is recognized on an HTM security, through the date of the balance sheet. Our HTM securities had an average duration of 1.6 years as of June 30, 2015 . (b) The cost/amortized cost, unrealized gains and losses, and fair value of AFS securities as of June 30, 2015 and December 31, 2014 were as follows: June 30, 2015 ($ in thousands) Cost/ Amortized Cost Unrealized Gains Unrealized Losses Fair Value AFS fixed income securities: U.S. government and government agencies $ 109,506 6,420 (65 ) 115,861 Foreign government 22,026 693 — 22,719 Obligations of states and political subdivisions 1,277,635 23,242 (4,819 ) 1,296,058 Corporate securities 1,794,698 36,201 (6,324 ) 1,824,575 ABS 213,662 990 (155 ) 214,497 CMBS 1 213,497 1,861 (1,180 ) 214,178 Residential mortgage-backed securities (“RMBS”) 2 502,199 6,224 (3,493 ) 504,930 Total AFS fixed income securities 4,133,223 75,631 (16,036 ) 4,192,818 AFS equity securities: Common stock 200,150 15,159 (4,190 ) 211,119 Preferred stock 17,988 23 (247 ) 17,764 Total AFS equity securities 218,138 15,182 (4,437 ) 228,883 Total AFS securities $ 4,351,361 90,813 (20,473 ) 4,421,701 December 31, 2014 ($ in thousands) Cost/ Amortized Cost Unrealized Gains Unrealized Losses Fair Value AFS fixed income securities: U.S. government and government agencies $ 116,666 7,592 (128 ) 124,130 Foreign government 27,035 796 — 27,831 Obligations of states and political subdivisions 1,208,776 38,217 (729 ) 1,246,264 Corporate securities 1,763,427 42,188 (5,809 ) 1,799,806 ABS 176,837 760 (373 ) 177,224 CMBS 1 177,932 2,438 (777 ) 179,593 RMBS 2 505,113 8,587 (2,426 ) 511,274 Total AFS fixed income securities 3,975,786 100,578 (10,242 ) 4,066,122 AFS equity securities: Common stock 159,011 32,725 (336 ) 191,400 Total AFS equity securities 159,011 32,725 (336 ) 191,400 Total AFS securities $ 4,134,797 133,303 (10,578 ) 4,257,522 1 CMBS includes government guaranteed agency securities with a fair value of $10.2 million at June 30, 2015 and $13.2 million at December 31, 2014 . 2 RMBS includes government guaranteed agency securities with a fair value of $25.7 million at June 30, 2015 and $32.4 million at December 31, 2014 . Unrealized gains and losses of AFS securities represent fair value fluctuations from the later of: (i) the date a security is designated as AFS; or (ii) the date that an OTTI charge is recognized on an AFS security, through the date of the balance sheet. These unrealized gains and losses are recorded in Accumulated other comprehensive (loss) income ("AOCI") on the Consolidated Balance Sheets. (c) The following tables summarize, for all securities in a net unrealized/unrecognized loss position at June 30, 2015 and December 31, 2014 , the fair value and pre-tax net unrealized/unrecognized loss by asset class and by length of time those securities have been in a net loss position: June 30, 2015 Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Fair Value Unrealized Losses 1 AFS fixed income securities: U.S. government and government agencies $ 7,513 (62 ) 398 (3 ) Obligations of states and political subdivisions 398,429 (4,819 ) — — Corporate securities 440,510 (4,939 ) 50,187 (1,385 ) ABS 40,185 (40 ) 15,071 (115 ) CMBS 80,860 (1,057 ) 15,579 (123 ) RMBS 172,482 (1,763 ) 67,336 (1,730 ) Total AFS fixed income securities 1,139,979 (12,680 ) 148,571 (3,356 ) AFS equity securities: Common stock 103,352 (4,190 ) — — Preferred stock 8,432 (247 ) — — Total AFS equity securities 111,784 (4,437 ) — — Subtotal $ 1,251,763 (17,117 ) 148,571 (3,356 ) Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Unrecognized Gains 2 Fair Value Unrealized Losses 1 Unrecognized Gains 2 HTM securities: Obligations of states and political subdivisions 180 (2 ) — — — — ABS — — — 1,540 (280 ) 272 Subtotal $ 180 (2 ) — 1,540 (280 ) 272 Total AFS and HTM $ 1,251,943 (17,119 ) — 150,111 (3,636 ) 272 December 31, 2014 Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Fair Value Unrealized Losses 1 AFS fixed income securities: U.S. government and government agencies $ 7,567 (13 ) 10,866 (115 ) Obligations of states and political subdivisions 47,510 (105 ) 64,018 (624 ) Corporate securities 276,648 (1,734 ) 153,613 (4,075 ) ABS 113,202 (178 ) 15,618 (195 ) CMBS 12,799 (34 ) 59,219 (743 ) RMBS 3,399 (8 ) 138,724 (2,418 ) Total AFS fixed income securities 461,125 (2,072 ) 442,058 (8,170 ) AFS equity securities: Common stock 5,262 (336 ) — — Total AFS equity securities 5,262 (336 ) — — Subtotal $ 466,387 (2,408 ) 442,058 (8,170 ) Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Unrecognized Gains 2 Fair Value Unrealized Losses 1 Unrecognized Gains 2 HTM securities: Obligations of states and political subdivisions $ 196 (3 ) 1 — — — ABS — — — 2,235 (455 ) 439 Subtotal 196 (3 ) 1 2,235 (455 ) 439 Total AFS and HTM $ 466,583 (2,411 ) 1 444,293 (8,625 ) 439 1 Gross unrealized losses include non-OTTI unrealized amounts and OTTI losses recognized in AOCI. In addition, this column includes remaining unrealized gain or loss amounts on securities that were transferred to an HTM designation in the first quarter of 2009 for those securities that are in a net unrealized/unrecognized loss position. 2 Unrecognized gains represent fair value fluctuations from the later of: (i) the date a security is designated as HTM; or (ii) the date that an OTTI charge is recognized on an HTM security. The table below provides our net unrealized/unrecognized loss positions by impairment severity as of June 30, 2015 compared to December 31, 2014 : ($ in thousands) June 30, 2015 December 31, 2014 Number of Issues % of Market/Book Unrealized/ Unrecognized Loss Number of Issues % of Market/Book Unrealized/ Unrecognized Loss 495 80% - 99% $ 20,483 350 80% - 99% $ 10,596 — 60% - 79% — — 60% - 79% — — 40% - 59% — — 40% - 59% — — 20% - 39% — — 20% - 39% — — 0% - 19% — — 0% - 19% — $ 20,483 $ 10,596 The increase in the number of securities in a loss position in our portfolio as of June 30, 2015 compared to December 31, 2014, and the related loss amounts were mainly driven by a higher interest rate environment. During Six Months 2015 , interest rates on the 10-year U.S. Treasury Note rose by 18 basis points. This interest rate movement had a negative impact on the valuation of our fixed income securities portfolio, thus increasing the number of securities in a loss position and the corresponding dollar amount of unrealized losses. In addition, unrealized losses on our equity portfolio increased to $4.4 million . These unrealized losses are related to 27 securities with an average impairment severity of 4% of cost, which reflects a temporary dislocation in market values that are expected to recover in the near term. We do not intend to sell any of the securities in the tables above, nor do we believe we will be required to sell any of these securities. We have also reviewed these securities under our OTTI policy, as described in Note 2. “Summary of Significant Accounting Policies” within Item 8. “Financial Statements and Supplementary Data.” of our 2014 Annual Report , and have concluded that they are temporarily impaired. This conclusion reflects our current judgment as to the financial position and future prospects of the entity that issued the investment security and underlying collateral. If our judgment about an individual security changes in the future, we may ultimately record a credit loss after having originally concluded that one did not exist, which could have a material impact on our net income and financial position in future periods. (d) Fixed income securities at June 30, 2015 , by contractual maturity, are shown below. Mortgage-backed securities ("MBS") are included in the maturity tables using the estimated average life of each security. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations, with or without call or prepayment penalties. Listed below are the contractual maturities of HTM fixed income securities at June 30, 2015 : ($ in thousands) Carrying Value Fair Value Due in one year or less $ 87,104 88,688 Due after one year through five years 149,865 158,092 Due after five years through 10 years 10,890 12,922 Total HTM fixed income securities $ 247,859 259,702 Listed below are the contractual maturities of AFS fixed income securities at June 30, 2015 : ($ in thousands) Fair Value Due in one year or less $ 447,462 Due after one year through five years 2,146,816 Due after five years through 10 years 1,504,185 Due after 10 years 94,355 Total AFS fixed income securities $ 4,192,818 (e) The following table summarizes our other investment portfolio by strategy and the remaining commitment amount associated with each strategy: Other Investments Carrying Value June 30, 2015 ($ in thousands) June 30, December 31, Remaining Commitment Alternative Investments Secondary private equity $ 18,997 21,807 7,072 Private equity 16,027 20,126 8,823 Energy/power generation 9,662 14,445 19,610 Real estate 8,242 11,452 9,975 Mezzanine financing 7,563 9,853 13,383 Distressed debt 7,000 8,679 3,048 Venture capital 6,697 6,606 350 Total alternative investments 74,188 92,968 62,261 Other securities 11,232 6,235 2,269 Total other investments $ 85,420 99,203 64,530 For a description of our seven alternative investment strategies, as well as information regarding redemption, restrictions, and fund liquidations, refer to Note 5. “Investments” in Item 8. “Financial Statements and Supplementary Data.” of our 2014 Annual Report . The following table sets forth gross summarized financial information for our other investments portfolio, including the portion not owned by us. The investments are carried under the equity method of accounting. The last line of the table below reflects our share of the aggregate income, which is the portion included in our Financial Statements. As the majority of these investments report results to us on a one quarter lag, the summarized financial statement information for the three and six-month periods ended March 31 is as follows: Income Statement Information Quarter ended March 31, Six Months ended March 31, ($ in millions) 2015 2014 2015 2014 Net investment income $ 8.5 22.8 $ 95.6 85.7 Realized gains 279.4 74.2 592.5 197.6 Net change in unrealized (depreciation) appreciation (223.4 ) 207.6 (866.9 ) 842.4 Net (loss) income $ 64.5 304.6 $ (178.8 ) 1,125.7 Selective’s insurance subsidiaries’ other investments income (loss) $ 1.4 3.6 $ (2.1 ) 8.8 (f) We have pledged certain AFS fixed income securities as collateral related to: (i) our outstanding borrowing of $60 million with the Federal Home Loan Bank of Indianapolis ("FHLBI"); and (ii) our reinsurance obligations related to our 2011 acquisition of our excess and surplus lines ("E&S") book of business. In addition, certain securities were on deposit with various state and regulatory agencies to comply with insurance laws. We retain all rights regarding all securities pledged as collateral. The following table summarizes the market value of these securities at June 30, 2015 : ($ in millions) FHLBI Collateral Reinsurance Collateral State and Regulatory Deposits Total U.S. government and government agencies $ 7.7 — 24.7 32.4 Obligations of states and political subdivisions — 4.9 — 4.9 Corporate securities — 4.8 — 4.8 CMBS 1.5 — — 1.5 RMBS 54.5 2.0 — 56.5 Total pledged as collateral $ 63.7 11.7 24.7 100.1 (g) The Company did not have exposure to any credit concentration risk of a single issuer greater than 10% of the Company's stockholders' equity, other than certain U.S. government agencies, as of June 30, 2015 or December 31, 2014 . (h) The components of pre-tax net investment income earned for the periods indicated were as follows: Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Fixed income securities $ 30,659 33,781 $ 61,626 $ 64,809 Equity securities 2,384 1,736 4,176 3,185 Short-term investments 23 14 48 33 Other investments 1,422 3,553 (2,118 ) 8,771 Investment expenses (2,258 ) (2,310 ) (4,585 ) (4,490 ) Net investment income earned $ 32,230 36,774 59,147 72,308 (i) The following tables summarize OTTI by asset type for the periods indicated: Second Quarter 2015 Gross Included in Other Comprehensive Income ("OCI") Recognized in ($ in thousands) AFS fixed income securities: Corporate securities $ 183 — 183 Total AFS fixed income securities 183 — 183 AFS equity securities: Common stock 4,088 — 4,088 Preferred stock 180 — 180 Total AFS equity securities 4,268 — 4,268 Total OTTI losses $ 4,451 — 4,451 Second Quarter 2014 Gross Included in OCI Recognized in Earnings ($ in thousands) AFS equity securities: Common stock $ 419 — 419 Total OTTI losses $ 419 — 419 Six Months 2015 Gross Included in Other Comprehensive Income ("OCI") Recognized in ($ in thousands) AFS fixed income securities: Corporate securities $ 1,192 — 1,192 RMBS 1 — 1 Total AFS fixed income securities 1,193 — 1,193 AFS equity securities: Common stock 5,172 — 5,172 Preferred stock 180 — 180 Total AFS equity securities 5,352 — 5,352 Total OTTI losses $ 6,545 — 6,545 Six Months 2014 Gross Included in OCI Recognized in Earnings ($ in thousands) AFS equity securities: Common stock $ 1,382 — 1,382 Total OTTI losses $ 1,382 — 1,382 For a discussion of our evaluation for OTTI of fixed income securities, short-term investments, equity securities, and other investments, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2014 Annual Report. The following tables set forth, for the periods indicated, credit loss impairments on fixed income securities for which a portion of the OTTI charge was recognized in OCI, and the corresponding changes in such amounts: Quarter ended June 30, ($ in thousands) 2015 2014 Balance, beginning of period $ 1,013 7,488 Addition for the amount related to credit loss for which an OTTI was not previously recognized — — Reductions for securities sold during the period — (1,954 ) Reductions for securities for which the amount previously recognized in OCI was recognized in earnings because of intention or potential requirement to sell before recovery of amortized cost — — Additional increases to the amount related to credit loss for which an OTTI was previously recognized — — Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected — — Balance, end of period $ 1,013 5,534 Six Months ended June 30, ($ in thousands) 2015 2014 Balance, beginning of period $ 5,444 7,488 Addition for the amount related to credit loss for which an OTTI was not previously recognized — — Reductions for securities sold during the period (4,431 ) (1,954 ) Reductions for securities for which the amount previously recognized in OCI was recognized in earnings because of intention or potential requirement to sell before recovery of amortized cost — — Additional increases to the amount related to credit loss for which an OTTI was previously recognized — — Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected — — Balance, end of period $ 1,013 5,534 (j) The components of net realized gains, excluding OTTI charges, for the periods indicated were as follows: Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 HTM fixed income securities Gains $ 2 3 2 3 Losses — (3 ) (1 ) (14 ) AFS fixed income securities Gains 487 780 1,989 938 Losses (18 ) (31 ) (130 ) (143 ) AFS equity securities Gains 830 4,362 22,148 12,679 Losses (270 ) (153 ) (1,346 ) (324 ) Other investments Gains — — — — Losses — — (654 ) — Total net realized gains (excluding OTTI charges) $ 1,031 4,958 22,008 13,139 Realized gains and losses on the sale of investments are determined on the basis of the cost of the specific investments sold. Proceeds from the sale of AFS securities were $19.5 million and $157.9 million in Second Quarter and Six Months 2015 , respectively. The $22.0 million in net realized gains for Six Months 2015 was primarily related to the sale of AFS equity securities due to a change in our dividend equity strategy from a quantitative, model-driven stock selection strategy to a fundamentally-based stock selection approach that incorporates an assessment of the sustainability and growth rate of a company’s dividends and future cash flow. The $5.0 million and $13.1 million in net realized gains in Second Quarter and Six Months 2014 , respectively, were primarily related to the sale of AFS equity securities due to the quantitative rebalancing of our dividend yield strategy holdings within our equity portfolio.

Indebtedness

Indebtedness	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Indebtedness	NOTE 5. Indebtedness Of our ten insurance subsidiaries ("Insurance Subsidiaries"), we have two domiciled in Indiana ("Indiana Subsidiaries") that are members of the FHLBI. In January 2015, the Indiana Subsidiaries borrowed $15 million in the aggregate from the FHLBI for general corporate purposes. The unpaid principal amount accrues interest of 0.63% , which is paid on the 15th of every month. The principal amount is due on July 22, 2016. For a summary of the Indiana Subsidiaries' borrowings from the FHLBI, refer to Note 10. "Indebtedness" in Item 8. "Financial Statements and Supplementary Data." of our 2014 Annual Report.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The following table presents the carrying amounts and estimated fair values of our financial instruments as of June 30, 2015 and December 31, 2014 : June 30, 2015 December 31, 2014 ($ in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Financial Assets Fixed income securities: HTM $ 247,859 259,702 318,137 333,961 AFS 4,192,818 4,192,818 4,066,122 4,066,122 Equity securities, AFS 228,883 228,883 191,400 191,400 Short-term investments 168,349 168,349 131,972 131,972 Financial Liabilities Notes payable: 0.63% borrowings from FHLBI 15,000 14,999 — — 1.25% borrowings from FHLBI 45,000 45,290 45,000 45,244 7.25% Senior Notes 49,897 56,607 49,896 59,181 6.70% Senior Notes 99,408 109,656 99,401 114,845 5.875% Senior Notes 185,000 183,742 185,000 185,000 Total notes payable $ 394,305 410,294 379,297 404,270 The fair values of our financial assets and liabilities are generated using various valuation techniques and are placed into the fair value hierarchy considering the following: (i) the highest priority is given to quoted prices in active markets for identical assets (Level 1); (ii) the next highest priority is given to quoted prices in markets that are not active or inputs that are observable either directly or indirectly, including quoted prices for similar assets in markets that are not active and other inputs that can be derived principally from, or corroborated by, observable market data for substantially the full term of the assets (Level 2); and (iii) the lowest priority is given to unobservable inputs supported by little or no market activity and that reflect our assumptions about the exit price, including assumptions that market participants would use in pricing the asset (Level 3). An asset or liability's classification within the fair value hierarchy is based on the lowest level of significant input to its valuation. Transfers between levels in the fair value hierarchy are recognized at the end of the reporting period. For a discussion of the techniques used to value our financial assets and liabilities, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2014 Annual Report. The following tables provide quantitative disclosures of our financial assets that were measured at fair value at June 30, 2015 and December 31, 2014 : June 30, 2015 Fair Value Measurements Using ($ in thousands) Assets Measured at Fair Value at 6/30/2015 Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) 1 Significant Other Observable Inputs (Level 2) 1 Significant Unobservable Inputs (Level 3) Description Measured on a recurring basis: AFS fixed income securities: U.S. government and government agencies $ 115,861 52,361 63,500 — Foreign government 22,719 — 22,719 — Obligations of states and political subdivisions 1,296,058 — 1,296,058 — Corporate securities 1,824,575 — 1,824,575 — ABS 214,497 — 214,497 — CMBS 214,178 — 214,178 — RMBS 504,930 — 504,930 — Total AFS fixed income securities 4,192,818 52,361 4,140,457 — AFS equity securities: Common stock 211,119 208,334 — 2,785 Preferred stock 17,764 17,764 — — Total AFS equity securities 228,883 226,098 — 2,785 Total AFS securities 4,421,701 278,459 4,140,457 2,785 Short-term investments 168,349 168,349 — — Total assets measured at fair value $ 4,590,050 446,808 4,140,457 2,785 1 There were no transfers of securities between Level 1 and Level 2. December 31, 2014 Fair Value Measurements Using ($ in thousands) Assets Measured at Fair Value at 12/31/14 Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) 1 Significant Other Observable Inputs (Level 2) 1 Significant Unobservable Inputs (Level 3) Description Measured on a recurring basis: AFS: U.S. government and government agencies $ 124,130 53,199 70,931 — Foreign government 27,831 — 27,831 — Obligations of states and political subdivisions 1,246,264 — 1,246,264 — Corporate securities 1,799,806 — 1,799,806 — ABS 177,224 — 177,224 — CMBS 179,593 — 179,593 — RMBS 511,274 — 511,274 — Total AFS fixed income securities 4,066,122 53,199 4,012,923 — AFS equity securities: Common stock 191,400 188,500 — 2,900 Total AFS equity securities 191,400 188,500 — 2,900 Total AFS securities 4,257,522 241,699 4,012,923 2,900 Short-term investments 131,972 131,972 — — Total assets measured at fair value $ 4,389,494 373,671 4,012,923 2,900 1 There were no transfers of securities between Level 1 and Level 2. The following table provides a summary of the changes in the fair value of securities measured using Level 3 inputs and related quantitative information for the six-month period ended June 30, 2015 . June 30, 2015 Common Stock ($ in thousands) Fair value, December 31, 2014 $ 2,900 Total net (losses) gains for the period included in: OCI — Net income — Purchases — Sales (115 ) Issuances — Settlements — Transfers into Level 3 — Transfers out of Level 3 — Fair value, June 30, 2015 $ 2,785 The $2.9 million in fair value of securities measured using Level 3 prices remained unchanged during the full year 2014 . The price for the securities, which were measured using Level 3 inputs at June 30, 2015 and December 31, 2014 , was obtained through statements provided by the issuer, which we review for reasonableness. The following tables provide quantitative information regarding our financial assets and liabilities that were disclosed at fair value at June 30, 2015 and December 31, 2014 : June 30, 2015 Fair Value Measurements Using ($ in thousands) Assets/ Liabilities Disclosed at Fair Value at 6/30/2015 Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial Assets HTM: Foreign government $ 5,292 — 5,292 — Obligations of states and political subdivisions 226,706 — 226,706 — Corporate securities 20,832 — 20,832 — ABS 1,981 — 1,981 — CMBS 4,891 — 4,891 — Total HTM fixed income securities $ 259,702 — 259,702 — Financial Liabilities Notes payable: 0.63% borrowings from FHLBI $ 14,999 — 14,999 — 1.25% borrowings from FHLBI 45,290 — 45,290 — 7.25% Senior Notes 56,607 — 56,607 — 6.70% Senior Notes 109,656 — 109,656 — 5.875% Senior Notes 183,742 183,742 — — Total notes payable $ 410,294 183,742 226,552 — December 31, 2014 Fair Value Measurements Using ($ in thousands) Assets/ Liabilities Disclosed at Fair Value at 12/31/2014 Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial Assets HTM: Foreign government $ 5,394 — 5,394 — Obligations of states and political subdivisions 299,132 — 299,132 — Corporate securities 21,422 — 21,422 — ABS 2,823 — 2,823 — CMBS 5,190 — 5,190 — Total HTM fixed income securities $ 333,961 — 333,961 — Financial Liabilities Notes payable: 1.25% borrowings from FHLBI $ 45,244 — 45,244 — 7.25% Senior Notes 59,181 — 59,181 — 6.70% Senior Notes 114,845 — 114,845 — 5.875% Senior Notes 185,000 185,000 — — Total notes payable $ 404,270 185,000 219,270 —

Reinsurance

Reinsurance	6 Months Ended
	Jun. 30, 2015
Reinsurance Disclosures [Abstract]
Reinsurance	Reinsurance The following table contains a listing of direct, assumed, and ceded reinsurance amounts for premiums written, premiums earned, and loss and loss expenses incurred for the periods indicated. For more information concerning reinsurance, refer to Note 8. “Reinsurance” in Item 8. “Financial Statements and Supplementary Data.” of our 2014 Annual Report . Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Premiums written: Direct $ 621,408 572,314 1,220,191 1,130,205 Assumed 4,960 5,837 11,041 13,687 Ceded (94,235 ) (98,328 ) (181,011 ) (187,319 ) Net $ 532,133 479,823 1,050,221 956,573 Premiums earned: Direct $ 576,107 544,913 1,138,149 1,081,613 Assumed 5,093 10,385 11,001 20,570 Ceded (90,891 ) (91,673 ) (182,718 ) (182,063 ) Net $ 490,309 463,625 966,432 920,120 Loss and loss expense incurred: Direct $ 316,648 332,707 628,894 691,056 Assumed 4,228 7,377 8,890 14,856 Ceded (29,315 ) (42,289 ) (61,224 ) (87,571 ) Net $ 291,561 297,795 576,560 618,341 Ceded premiums and losses related to our participation in the NFIP, under which 100% of our flood premiums, losses, and loss expenses are ceded to the NFIP, are as follows: Ceded to NFIP Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Ceded premiums written $ (62,479 ) (65,775 ) (116,321 ) (123,078 ) Ceded premiums earned (58,781 ) (59,213 ) (117,779 ) (117,499 ) Ceded loss and loss expense incurred (14,684 ) (26,712 ) (20,933 ) (34,091 )

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Information	Segment Information Selective Insurance Group, Inc., through its Insurance Subsidiaries, offers property and casualty insurance products in the standard and E&S marketplaces. We classify our business into four reportable segments, which are as follows: • Standard Commercial Lines - comprised of insurance products and services provided in the standard marketplace to commercial enterprises, which are typically businesses, non-profit organizations, and local government agencies. • Standard Personal Lines - comprised of insurance products and services, including flood insurance coverage, provided primarily to individuals acquiring coverage in the standard marketplace. • E&S Lines - comprised of insurance products and services provided to customers who have not obtained coverage in the standard marketplace. • Investments - invests the premiums collected by our Standard Commercial Lines, Standard Personal Lines, and E&S Lines, as well as our earnings and amounts generated through our capital management strategies, which may include the issuance of debt and equity securities. In the fourth quarter of 2014, we revised our reporting segments from our previously-reported Standard Insurance Operations segment to Standard Commercial Lines and Standard Personal Lines. For information regarding this change, see Note 11. "Segment Information" in Item 8. "Financial Statements and Supplementary Data." of our 2014 Annual Report. In computing the results of each segment, we do not make adjustments for interest expense or net general corporate expenses. While we do not fully allocate taxes to all segments, we do allocate taxes to our Investments segment as we manage that segment on after-tax results. We do not maintain separate investment portfolios for the segments and therefore, do not allocate assets to the segments. In the first quarter of 2014, we sold the renewal rights to our $37 million self-insured group, or "SIG," book of business within the Standard Commercial Lines segment. We decided to opportunistically sell this small and specialized book of pooled business as a significant portion of the business was produced outside of our standard lines footprint, and proved difficult to grow. As this was a renewal rights sale, we will continue to service policies that were in force at the date of the sale. We continue to remain active in the municipal and public school marketplace for individual risks that procure traditional insurance programs rather than pooling arrangements. The proceeds from this sale, which amounted to $8 million , are included in "Miscellaneous income" within the table below as a component of Standard Commercial Lines revenue. The following summaries present revenues (net investment income and net realized gains on investments in the case of the Investments segment) and pre-tax income for the individual segments: Revenue by Segment Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Standard Commercial Lines: Net premiums earned: Commercial automobile $ 88,658 83,472 175,013 165,688 Workers compensation 70,954 68,992 139,431 138,405 General liability 119,207 111,591 234,178 220,409 Commercial property 66,549 61,226 131,112 121,412 Businessowners’ policies 23,178 21,279 45,877 42,148 Bonds 5,106 4,734 10,106 9,490 Other 3,553 3,213 7,021 6,396 Miscellaneous income 2,563 1,571 4,232 10,485 Total Standard Commercial Lines revenue 379,768 356,078 746,970 714,433 Standard Personal Lines: Net premiums earned: Personal automobile 36,740 38,022 73,750 76,248 Homeowners 33,731 33,576 67,452 66,874 Other 1,600 2,946 3,348 6,240 Miscellaneous income 291 337 591 1,242 Total Standard Personal Lines revenue 72,362 74,881 145,141 150,604 E&S Lines: Net premiums earned: General liability 28,793 23,936 55,519 45,867 Commercial property 10,464 9,379 20,119 18,496 Commercial automobile 1,776 1,259 3,506 2,447 Total E&S Lines revenue 41,033 34,574 79,144 66,810 Investments: Net investment income 32,230 36,774 59,147 72,308 Net realized investment (losses) gains (3,420 ) 4,539 15,463 11,757 Total Investments revenue 28,810 41,313 74,610 84,065 Total segments revenue 521,973 506,846 1,045,865 1,015,912 Other income — 3 — 8 Total revenues $ 521,973 506,849 1,045,865 1,015,920 Income Before Federal Income Tax Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Standard Commercial Lines: Underwriting gain $ 35,241 15,703 65,277 12,073 GAAP combined ratio 90.7 % 95.6 91.2 98.3 Statutory combined ratio 90.1 95.5 89.9 97.8 Standard Personal Lines: Underwriting loss $ (4,655 ) (5,582 ) (7,121 ) (7,942 ) GAAP combined ratio 106.5 % 107.5 104.9 105.3 Statutory combined ratio 105.4 106.1 105.2 105.3 E&S Insurance Operations: Underwriting (loss) gain $ (1,462 ) (37 ) (3,011 ) 938 GAAP combined ratio 103.6 % 100.1 103.8 98.6 Statutory combined ratio 102.7 99.9 102.5 98.8 Investments: Net investment income $ 32,230 36,774 59,147 72,308 Net realized investment (losses) gains (3,420 ) 4,539 15,463 11,757 Total investment income, before federal income tax 28,810 41,313 74,610 84,065 Tax on investment income 6,254 10,941 18,572 22,516 Total investment income, after federal income tax $ 22,556 30,372 56,038 61,549 Reconciliation of Segment Results to Income Before Federal Income Tax Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Underwriting gain (loss), before federal income tax Standard Commercial Lines $ 35,241 15,703 65,277 12,073 Standard Personal Lines (4,655 ) (5,582 ) (7,121 ) (7,942 ) E&S Lines (1,462 ) (37 ) (3,011 ) 938 Investment income, before federal income tax 28,810 41,313 74,610 84,065 Total all segments 57,934 51,397 129,755 89,134 Interest expense (5,490 ) (5,425 ) (10,969 ) (10,986 ) General corporate and other expenses (5,679 ) (6,451 ) (15,731 ) (13,543 ) Income before federal income tax $ 46,765 39,521 103,055 64,605

Retirement Plans

Retirement Plans	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Retirement Plans	Retirement Plans The following tables show the net periodic benefit cost related to the Retirement Income Plan for Selective Insurance Company of America (“Retirement Income Plan”) and the life insurance benefits provided to eligible Selective Insurance Company of America retirees (referred to as the "Retirement Life Plan"). For more information concerning these plans, refer to Note 15. “Retirement Plans” in Item 8. “Financial Statements and Supplementary Data.” of our 2014 Annual Report. Retirement Income Plan Retirement Life Plan ($ in thousands) 2015 2014 2015 2014 Components of Net Periodic Benefit Cost: Net Periodic Benefit Cost: Service cost $ 1,963 1,626 — — Interest cost 3,501 3,253 63 73 Expected return on plan assets (3,990 ) (3,918 ) — — Amortization of unrecognized net actuarial loss 1,695 368 14 13 Total net periodic cost $ 3,169 1,329 77 86 Retirement Income Plan Retirement Life Plan ($ in thousands) 2015 2014 2015 2014 Components of Net Periodic Benefit Cost: Net Periodic Benefit Cost: Service cost $ 3,927 3,253 — — Interest cost 7,003 6,507 126 146 Expected return on plan assets (7,981 ) (7,837 ) — — Amortization of unrecognized net actuarial loss 3,390 735 28 26 Total net periodic cost $ 6,339 2,658 154 172 Retirement Income Plan Retirement Life Plan 2015 2014 2015 2014 Weighted-Average Expense Assumptions: Discount rate 4.29 % 5.16 4.08 % 4.85 Expected return on plan assets 6.27 6.92 — — Rate of compensation increase 4.00 4.00 — — We presently anticipate contributing $11.9 million to the Retirement Income Plan in 2015, $6.4 million of which has been funded as of June 30, 2015 .

Comprehensive Income

Comprehensive Income	6 Months Ended
	Jun. 30, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Comprehensive Income	Comprehensive Income The components of comprehensive income, both gross and net of tax, for Second Quarter and Six Months 2015 and 2014 are as follows: Second Quarter 2015 ($ in thousands) Gross Tax Net Net income $ 46,765 12,997 33,768 Components of OCI: Unrealized (losses) gains on investment securities : Unrealized holding losses during the period (60,244 ) (21,084 ) (39,160 ) Amounts reclassified into net income: HTM securities (185 ) (65 ) (120 ) Realized losses on AFS securities 3,422 1,197 2,225 Net unrealized losses (57,007 ) (19,952 ) (37,055 ) Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 1,709 598 1,111 Defined benefit pension and post-retirement plans 1,709 598 1,111 Other comprehensive loss (55,298 ) (19,354 ) (35,944 ) Comprehensive loss $ (8,533 ) (6,357 ) (2,176 ) Second Quarter 2014 ($ in thousands) Gross Tax Net Net income $ 39,521 10,180 29,341 Components of OCI: Unrealized gains (losses) on investment securities : Unrealized holding gains during the period 45,122 15,793 29,329 Amounts reclassified into net income: HTM securities (221 ) (77 ) (144 ) Non-credit OTTI 469 164 305 Realized gains on AFS securities (5,008 ) (1,753 ) (3,255 ) Net unrealized gains 40,362 14,127 26,235 Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 381 133 248 Defined benefit pension and post-retirement plans 381 133 248 Other comprehensive income 40,743 14,260 26,483 Comprehensive income $ 80,264 24,440 55,824 Six Months 2015 ($ in thousands) Gross Tax Net Net income $ 103,055 29,579 73,476 Components of OCI: Unrealized (losses) gains on investment securities : Unrealized holding losses during the period (36,267 ) (12,693 ) (23,574 ) Amounts reclassified into net income: HTM securities (446 ) (156 ) (290 ) Non-credit OTTI 357 125 232 Realized gains on AFS securities (16,473 ) (5,766 ) (10,707 ) Net unrealized losses (52,829 ) (18,490 ) (34,339 ) Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 3,418 1,196 2,222 Defined benefit pension and post-retirement plans 3,418 1,196 2,222 Other comprehensive loss (49,411 ) (17,294 ) (32,117 ) Comprehensive income $ 53,644 12,285 41,359 Six Months 2014 ($ in thousands) Gross Tax Net Net income $ 64,605 17,290 47,315 Components of OCI: Unrealized gains (losses) on investment securities : Unrealized holding gains during the period 78,086 27,331 50,755 Amounts reclassified into net income: HTM securities (677 ) (237 ) (440 ) Non-credit OTTI 469 164 305 Realized gains on AFS securities (12,237 ) (4,283 ) (7,954 ) Net unrealized gains 65,641 22,975 42,666 Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 761 266 495 Defined benefit pension and post-retirement plans 761 266 495 Other comprehensive income 66,402 23,241 43,161 Comprehensive income $ 131,007 40,531 90,476 The balances of, and changes in, each component of AOCI (net of taxes) as of June 30, 2015 are as follows: June 30, 2015 Net Unrealized (Loss) Gain on Investment Securities Defined Benefit Pension and Post-Retirement Plans Total Accumulated Other Comprehensive Income (Loss) ($ in thousands) OTTI Related HTM Related All Other Investments Subtotal Balance, December 31, 2014 $ (514 ) 623 80,284 80,393 (60,605 ) 19,788 OCI before reclassifications — — (23,574 ) (23,574 ) — (23,574 ) Amounts reclassified from AOCI 232 (290 ) (10,707 ) (10,765 ) 2,222 (8,543 ) Net current period OCI 232 (290 ) (34,281 ) (34,339 ) 2,222 (32,117 ) Balance, June 30, 2015 $ (282 ) 333 46,003 46,054 (58,383 ) (12,329 ) The reclassifications out of AOCI are as follows: Quarter ended Six Months ended ($ in thousands) 2015 2014 2015 2014 Affected Line Item in the Unaudited Consolidated Statement of Income OTTI related Non-credit OTTI on disposed securities $ — 469 357 469 Net realized (losses) gains — 469 357 469 Income before federal income tax — (164 ) (125 ) (164 ) Total federal income tax expense — 305 232 305 Net income HTM related Unrealized losses on HTM disposals 87 51 137 75 Net realized (losses) gains Amortization of net unrealized gains on HTM securities (272 ) (272 ) (583 ) (752 ) Net investment income earned (185 ) (221 ) (446 ) (677 ) Income before federal income tax 65 77 156 237 Total federal income tax expense (120 ) (144 ) (290 ) (440 ) Net income Realized gains and losses on AFS and OTTI Realized losses (gains) on AFS disposals and OTTI 3,422 (5,008 ) (16,473 ) (12,237 ) Net realized (losses) gains 3,422 (5,008 ) (16,473 ) (12,237 ) Income before federal income tax (1,197 ) 1,753 5,766 4,283 Total federal income tax expense 2,225 (3,255 ) (10,707 ) (7,954 ) Net income Defined benefit pension and post-retirement life plans Net actuarial loss 372 88 743 175 Loss and loss expense incurred 1,337 293 2,675 586 Policy acquisition costs Total defined benefit pension and post-retirement life 1,709 381 3,418 761 Income before federal income tax (598 ) (133 ) (1,196 ) (266 ) Total federal income tax expense 1,111 248 2,222 495 Net income Total reclassifications for the period $ 3,216 (2,846 ) (8,543 ) (7,594 ) Net income

Litigation

Litigation	6 Months Ended
	Jun. 30, 2015
Loss Contingency, Information about Litigation Matters [Abstract]
Litigation	Litigation In the ordinary course of conducting business, we are named as defendants in various legal proceedings. Most of these proceedings are claims litigation involving our Insurance Subsidiaries as either: (i) liability insurers defending or providing indemnity for third-party claims brought against our customers; or (ii) insurers defending first-party coverage claims brought against them. We account for such activity through the establishment of unpaid loss and loss expense reserves. We expect that the ultimate liability, if any, with respect to such ordinary course claims litigation, after consideration of provisions made for potential losses and costs of defense, will not be material to our consolidated financial condition, results of operations, or cash flows. Our Insurance Subsidiaries are also from time to time involved in other legal actions, some of which assert claims for substantial amounts. These actions include, among others, putative class actions seeking certification of a state or national class. Such putative class actions have alleged, for example, improper reimbursement of medical providers paid under workers compensation and personal and commercial automobile insurance policies. Our Insurance Subsidiaries also are involved from time to time in individual actions in which extra-contractual damages, punitive damages, or penalties are sought, such as claims alleging bad faith in the handling of insurance claims. We believe that we have valid defenses to these cases. We expect that the ultimate liability, if any, with respect to such lawsuits, after consideration of provisions made for estimated losses, will not be material to our consolidated financial condition. Nonetheless, given the large or indeterminate amounts sought in certain of these actions, and the inherent unpredictability of litigation, an adverse outcome in certain matters could, from time to time, have a material adverse effect on our consolidated results of operations or cash flows in particular quarterly or annual periods. As of June 30, 2015, we do not believe the Company was involved in any legal action that could have a material adverse effect on our consolidated financial condition, results of operations, or cash flows.

Statements of Cash Flow (Tables

Statements of Cash Flow (Tables)	6 Months Ended
	Jun. 30, 2015
Supplemental Cash Flow Information [Abstract]
Schedule of Cash Flow, Supplemental Disclosures	Six Months ended June 30, ($ in thousands) 2015 2014 Cash paid during the period for: Interest $ 10,947 11,113 Federal income tax 8,500 3,699 Non-cash items: Tax-free exchange of fixed income securities, available-for-sale ("AFS") 17,120 9,180 Tax-free exchange of fixed income securities, held-to-maturity ("HTM") — 15 Corporate actions related to equity securities, AFS 1 884 334 Assets acquired under capital lease arrangements 3,478 2,124 1 Examples of such corporate actions include non-cash acquisitions and stock splits.

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2015
Investments [Line Items]
Schedule of Held-to-maturity Securities	June 30, 2015 ($ in thousands) Amortized Cost Net Unrealized Gains (Losses) Carrying Value Unrecognized Holding Gains Unrecognized Holding Losses Fair Value Foreign government $ 5,292 3 5,295 — (3 ) 5,292 Obligations of states and political subdivisions 216,870 1,395 218,265 8,441 — 226,706 Corporate securities 18,532 (265 ) 18,267 2,565 — 20,832 Asset-backed securities (“ABS”) 1,976 (280 ) 1,696 285 — 1,981 Commercial mortgage-backed securities (“CMBS”) 4,676 (340 ) 4,336 555 — 4,891 Total HTM fixed income securities $ 247,346 513 247,859 11,846 (3 ) 259,702 December 31, 2014 ($ in thousands) Amortized Cost Net Unrealized Gains (Losses) Carrying Value Unrecognized Holding Gains Unrecognized Holding Losses Fair Value Foreign government $ 5,292 47 5,339 55 — 5,394 Obligations of states and political subdivisions 285,301 2,071 287,372 11,760 — 299,132 Corporate securities 18,899 (273 ) 18,626 2,796 — 21,422 ABS 2,818 (455 ) 2,363 460 — 2,823 CMBS 4,869 (432 ) 4,437 753 — 5,190 Total HTM fixed income securities $ 317,179 958 318,137 15,824 — 333,961
Schedule Of Available For Sale Securities	June 30, 2015 ($ in thousands) Cost/ Amortized Cost Unrealized Gains Unrealized Losses Fair Value AFS fixed income securities: U.S. government and government agencies $ 109,506 6,420 (65 ) 115,861 Foreign government 22,026 693 — 22,719 Obligations of states and political subdivisions 1,277,635 23,242 (4,819 ) 1,296,058 Corporate securities 1,794,698 36,201 (6,324 ) 1,824,575 ABS 213,662 990 (155 ) 214,497 CMBS 1 213,497 1,861 (1,180 ) 214,178 Residential mortgage-backed securities (“RMBS”) 2 502,199 6,224 (3,493 ) 504,930 Total AFS fixed income securities 4,133,223 75,631 (16,036 ) 4,192,818 AFS equity securities: Common stock 200,150 15,159 (4,190 ) 211,119 Preferred stock 17,988 23 (247 ) 17,764 Total AFS equity securities 218,138 15,182 (4,437 ) 228,883 Total AFS securities $ 4,351,361 90,813 (20,473 ) 4,421,701 December 31, 2014 ($ in thousands) Cost/ Amortized Cost Unrealized Gains Unrealized Losses Fair Value AFS fixed income securities: U.S. government and government agencies $ 116,666 7,592 (128 ) 124,130 Foreign government 27,035 796 — 27,831 Obligations of states and political subdivisions 1,208,776 38,217 (729 ) 1,246,264 Corporate securities 1,763,427 42,188 (5,809 ) 1,799,806 ABS 176,837 760 (373 ) 177,224 CMBS 1 177,932 2,438 (777 ) 179,593 RMBS 2 505,113 8,587 (2,426 ) 511,274 Total AFS fixed income securities 3,975,786 100,578 (10,242 ) 4,066,122 AFS equity securities: Common stock 159,011 32,725 (336 ) 191,400 Total AFS equity securities 159,011 32,725 (336 ) 191,400 Total AFS securities $ 4,134,797 133,303 (10,578 ) 4,257,522 1 CMBS includes government guaranteed agency securities with a fair value of $10.2 million at June 30, 2015 and $13.2 million at December 31, 2014 . 2 RMBS includes government guaranteed agency securities with a fair value of $25.7 million at June 30, 2015 and $32.4 million at December 31, 2014 .
Schedule of Fair Value and Gross Pre-Tax Net Unrealized/Unrecognized Loss of Securities by Length of Time	June 30, 2015 Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Fair Value Unrealized Losses 1 AFS fixed income securities: U.S. government and government agencies $ 7,513 (62 ) 398 (3 ) Obligations of states and political subdivisions 398,429 (4,819 ) — — Corporate securities 440,510 (4,939 ) 50,187 (1,385 ) ABS 40,185 (40 ) 15,071 (115 ) CMBS 80,860 (1,057 ) 15,579 (123 ) RMBS 172,482 (1,763 ) 67,336 (1,730 ) Total AFS fixed income securities 1,139,979 (12,680 ) 148,571 (3,356 ) AFS equity securities: Common stock 103,352 (4,190 ) — — Preferred stock 8,432 (247 ) — — Total AFS equity securities 111,784 (4,437 ) — — Subtotal $ 1,251,763 (17,117 ) 148,571 (3,356 ) Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Unrecognized Gains 2 Fair Value Unrealized Losses 1 Unrecognized Gains 2 HTM securities: Obligations of states and political subdivisions 180 (2 ) — — — — ABS — — — 1,540 (280 ) 272 Subtotal $ 180 (2 ) — 1,540 (280 ) 272 Total AFS and HTM $ 1,251,943 (17,119 ) — 150,111 (3,636 ) 272 December 31, 2014 Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Fair Value Unrealized Losses 1 AFS fixed income securities: U.S. government and government agencies $ 7,567 (13 ) 10,866 (115 ) Obligations of states and political subdivisions 47,510 (105 ) 64,018 (624 ) Corporate securities 276,648 (1,734 ) 153,613 (4,075 ) ABS 113,202 (178 ) 15,618 (195 ) CMBS 12,799 (34 ) 59,219 (743 ) RMBS 3,399 (8 ) 138,724 (2,418 ) Total AFS fixed income securities 461,125 (2,072 ) 442,058 (8,170 ) AFS equity securities: Common stock 5,262 (336 ) — — Total AFS equity securities 5,262 (336 ) — — Subtotal $ 466,387 (2,408 ) 442,058 (8,170 ) Less than 12 months 12 months or longer ($ in thousands) Fair Value Unrealized Losses 1 Unrecognized Gains 2 Fair Value Unrealized Losses 1 Unrecognized Gains 2 HTM securities: Obligations of states and political subdivisions $ 196 (3 ) 1 — — — ABS — — — 2,235 (455 ) 439 Subtotal 196 (3 ) 1 2,235 (455 ) 439 Total AFS and HTM $ 466,583 (2,411 ) 1 444,293 (8,625 ) 439 1 Gross unrealized losses include non-OTTI unrealized amounts and OTTI losses recognized in AOCI. In addition, this column includes remaining unrealized gain or loss amounts on securities that were transferred to an HTM designation in the first quarter of 2009 for those securities that are in a net unrealized/unrecognized loss position. 2 Unrecognized gains represent fair value fluctuations from the later of: (i) the date a security is designated as HTM; or (ii) the date that an OTTI charge is recognized on an HTM security.
Schedule Of The Number Of Securities In An Unrealized Unrecognized Loss Position	($ in thousands) June 30, 2015 December 31, 2014 Number of Issues % of Market/Book Unrealized/ Unrecognized Loss Number of Issues % of Market/Book Unrealized/ Unrecognized Loss 495 80% - 99% $ 20,483 350 80% - 99% $ 10,596 — 60% - 79% — — 60% - 79% — — 40% - 59% — — 40% - 59% — — 20% - 39% — — 20% - 39% — — 0% - 19% — — 0% - 19% — $ 20,483 $ 10,596
Schedule Of Other Investment Portfolio By Strategy And Remaining Commitment Amount Associated With Each Strategy	Other Investments Carrying Value June 30, 2015 ($ in thousands) June 30, December 31, Remaining Commitment Alternative Investments Secondary private equity $ 18,997 21,807 7,072 Private equity 16,027 20,126 8,823 Energy/power generation 9,662 14,445 19,610 Real estate 8,242 11,452 9,975 Mezzanine financing 7,563 9,853 13,383 Distressed debt 7,000 8,679 3,048 Venture capital 6,697 6,606 350 Total alternative investments 74,188 92,968 62,261 Other securities 11,232 6,235 2,269 Total other investments $ 85,420 99,203 64,530
Schedule Of Aggregated Summarized Income Statement Financial Information For Partnerships In Our Alternative Investment Portfolio	Income Statement Information Quarter ended March 31, Six Months ended March 31, ($ in millions) 2015 2014 2015 2014 Net investment income $ 8.5 22.8 $ 95.6 85.7 Realized gains 279.4 74.2 592.5 197.6 Net change in unrealized (depreciation) appreciation (223.4 ) 207.6 (866.9 ) 842.4 Net (loss) income $ 64.5 304.6 $ (178.8 ) 1,125.7 Selective’s insurance subsidiaries’ other investments income (loss) $ 1.4 3.6 $ (2.1 ) 8.8
Schedule Of Securities Pledged As Collateral	($ in millions) FHLBI Collateral Reinsurance Collateral State and Regulatory Deposits Total U.S. government and government agencies $ 7.7 — 24.7 32.4 Obligations of states and political subdivisions — 4.9 — 4.9 Corporate securities — 4.8 — 4.8 CMBS 1.5 — — 1.5 RMBS 54.5 2.0 — 56.5 Total pledged as collateral $ 63.7 11.7 24.7 100.1
Schedule of Net Investment Income Earned	Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Fixed income securities $ 30,659 33,781 $ 61,626 $ 64,809 Equity securities 2,384 1,736 4,176 3,185 Short-term investments 23 14 48 33 Other investments 1,422 3,553 (2,118 ) 8,771 Investment expenses (2,258 ) (2,310 ) (4,585 ) (4,490 ) Net investment income earned $ 32,230 36,774 59,147 72,308
Schedule of OTTI By Asset Type	Second Quarter 2015 Gross Included in Other Comprehensive Income ("OCI") Recognized in ($ in thousands) AFS fixed income securities: Corporate securities $ 183 — 183 Total AFS fixed income securities 183 — 183 AFS equity securities: Common stock 4,088 — 4,088 Preferred stock 180 — 180 Total AFS equity securities 4,268 — 4,268 Total OTTI losses $ 4,451 — 4,451 Second Quarter 2014 Gross Included in OCI Recognized in Earnings ($ in thousands) AFS equity securities: Common stock $ 419 — 419 Total OTTI losses $ 419 — 419 Six Months 2015 Gross Included in Other Comprehensive Income ("OCI") Recognized in ($ in thousands) AFS fixed income securities: Corporate securities $ 1,192 — 1,192 RMBS 1 — 1 Total AFS fixed income securities 1,193 — 1,193 AFS equity securities: Common stock 5,172 — 5,172 Preferred stock 180 — 180 Total AFS equity securities 5,352 — 5,352 Total OTTI losses $ 6,545 — 6,545 Six Months 2014 Gross Included in OCI Recognized in Earnings ($ in thousands) AFS equity securities: Common stock $ 1,382 — 1,382 Total OTTI losses $ 1,382 — 1,382
Schedule of Gross Credit Loss Impairments on Fixed Maturity Securities for Which a Portion of the OTTI Charge was Recognized in OCI	Quarter ended June 30, ($ in thousands) 2015 2014 Balance, beginning of period $ 1,013 7,488 Addition for the amount related to credit loss for which an OTTI was not previously recognized — — Reductions for securities sold during the period — (1,954 ) Reductions for securities for which the amount previously recognized in OCI was recognized in earnings because of intention or potential requirement to sell before recovery of amortized cost — — Additional increases to the amount related to credit loss for which an OTTI was previously recognized — — Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected — — Balance, end of period $ 1,013 5,534 Six Months ended June 30, ($ in thousands) 2015 2014 Balance, beginning of period $ 5,444 7,488 Addition for the amount related to credit loss for which an OTTI was not previously recognized — — Reductions for securities sold during the period (4,431 ) (1,954 ) Reductions for securities for which the amount previously recognized in OCI was recognized in earnings because of intention or potential requirement to sell before recovery of amortized cost — — Additional increases to the amount related to credit loss for which an OTTI was previously recognized — — Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected — — Balance, end of period $ 1,013 5,534
Schedule of Components of Net Realized Gains Excluding OTTI Charges	Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 HTM fixed income securities Gains $ 2 3 2 3 Losses — (3 ) (1 ) (14 ) AFS fixed income securities Gains 487 780 1,989 938 Losses (18 ) (31 ) (130 ) (143 ) AFS equity securities Gains 830 4,362 22,148 12,679 Losses (270 ) (153 ) (1,346 ) (324 ) Other investments Gains — — — — Losses — — (654 ) — Total net realized gains (excluding OTTI charges) $ 1,031 4,958 22,008 13,139
Held To Maturity Fixed Income Securities [Member]
Investments [Line Items]
Schedule Of Fixed Maturity Securities By Contractual Maturities	($ in thousands) Carrying Value Fair Value Due in one year or less $ 87,104 88,688 Due after one year through five years 149,865 158,092 Due after five years through 10 years 10,890 12,922 Total HTM fixed income securities $ 247,859 259,702
AFS Fixed Income Securities [Member]
Investments [Line Items]
Schedule Of Fixed Maturity Securities By Contractual Maturities	($ in thousands) Fair Value Due in one year or less $ 447,462 Due after one year through five years 2,146,816 Due after five years through 10 years 1,504,185 Due after 10 years 94,355 Total AFS fixed income securities $ 4,192,818

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of The Carrying Amounts and Estimated Fair Values of Financial Instruments	June 30, 2015 December 31, 2014 ($ in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Financial Assets Fixed income securities: HTM $ 247,859 259,702 318,137 333,961 AFS 4,192,818 4,192,818 4,066,122 4,066,122 Equity securities, AFS 228,883 228,883 191,400 191,400 Short-term investments 168,349 168,349 131,972 131,972 Financial Liabilities Notes payable: 0.63% borrowings from FHLBI 15,000 14,999 — — 1.25% borrowings from FHLBI 45,000 45,290 45,000 45,244 7.25% Senior Notes 49,897 56,607 49,896 59,181 6.70% Senior Notes 99,408 109,656 99,401 114,845 5.875% Senior Notes 185,000 183,742 185,000 185,000 Total notes payable $ 394,305 410,294 379,297 404,270
Schedule of Quantitative Disclosures of Our Financial Assets That Were Measured At Fair Value	June 30, 2015 Fair Value Measurements Using ($ in thousands) Assets Measured at Fair Value at 6/30/2015 Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) 1 Significant Other Observable Inputs (Level 2) 1 Significant Unobservable Inputs (Level 3) Description Measured on a recurring basis: AFS fixed income securities: U.S. government and government agencies $ 115,861 52,361 63,500 — Foreign government 22,719 — 22,719 — Obligations of states and political subdivisions 1,296,058 — 1,296,058 — Corporate securities 1,824,575 — 1,824,575 — ABS 214,497 — 214,497 — CMBS 214,178 — 214,178 — RMBS 504,930 — 504,930 — Total AFS fixed income securities 4,192,818 52,361 4,140,457 — AFS equity securities: Common stock 211,119 208,334 — 2,785 Preferred stock 17,764 17,764 — — Total AFS equity securities 228,883 226,098 — 2,785 Total AFS securities 4,421,701 278,459 4,140,457 2,785 Short-term investments 168,349 168,349 — — Total assets measured at fair value $ 4,590,050 446,808 4,140,457 2,785 1 There were no transfers of securities between Level 1 and Level 2. December 31, 2014 Fair Value Measurements Using ($ in thousands) Assets Measured at Fair Value at 12/31/14 Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) 1 Significant Other Observable Inputs (Level 2) 1 Significant Unobservable Inputs (Level 3) Description Measured on a recurring basis: AFS: U.S. government and government agencies $ 124,130 53,199 70,931 — Foreign government 27,831 — 27,831 — Obligations of states and political subdivisions 1,246,264 — 1,246,264 — Corporate securities 1,799,806 — 1,799,806 — ABS 177,224 — 177,224 — CMBS 179,593 — 179,593 — RMBS 511,274 — 511,274 — Total AFS fixed income securities 4,066,122 53,199 4,012,923 — AFS equity securities: Common stock 191,400 188,500 — 2,900 Total AFS equity securities 191,400 188,500 — 2,900 Total AFS securities 4,257,522 241,699 4,012,923 2,900 Short-term investments 131,972 131,972 — — Total assets measured at fair value $ 4,389,494 373,671 4,012,923 2,900 1 There were no transfers of securities between Level 1 and Level 2.
Schedule of Summary of the Changes in Fair Value of Securities Using Level 3 Inputs	June 30, 2015 Common Stock ($ in thousands) Fair value, December 31, 2014 $ 2,900 Total net (losses) gains for the period included in: OCI — Net income — Purchases — Sales (115 ) Issuances — Settlements — Transfers into Level 3 — Transfers out of Level 3 — Fair value, June 30, 2015 $ 2,785
Schedule of Quantitative Information of Our Financial Assets and Liabilities That Were Disclosed at Fair Value	: June 30, 2015 Fair Value Measurements Using ($ in thousands) Assets/ Liabilities Disclosed at Fair Value at 6/30/2015 Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial Assets HTM: Foreign government $ 5,292 — 5,292 — Obligations of states and political subdivisions 226,706 — 226,706 — Corporate securities 20,832 — 20,832 — ABS 1,981 — 1,981 — CMBS 4,891 — 4,891 — Total HTM fixed income securities $ 259,702 — 259,702 — Financial Liabilities Notes payable: 0.63% borrowings from FHLBI $ 14,999 — 14,999 — 1.25% borrowings from FHLBI 45,290 — 45,290 — 7.25% Senior Notes 56,607 — 56,607 — 6.70% Senior Notes 109,656 — 109,656 — 5.875% Senior Notes 183,742 183,742 — — Total notes payable $ 410,294 183,742 226,552 — December 31, 2014 Fair Value Measurements Using ($ in thousands) Assets/ Liabilities Disclosed at Fair Value at 12/31/2014 Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial Assets HTM: Foreign government $ 5,394 — 5,394 — Obligations of states and political subdivisions 299,132 — 299,132 — Corporate securities 21,422 — 21,422 — ABS 2,823 — 2,823 — CMBS 5,190 — 5,190 — Total HTM fixed income securities $ 333,961 — 333,961 — Financial Liabilities Notes payable: 1.25% borrowings from FHLBI $ 45,244 — 45,244 — 7.25% Senior Notes 59,181 — 59,181 — 6.70% Senior Notes 114,845 — 114,845 — 5.875% Senior Notes 185,000 185,000 — — Total notes payable $ 404,270 185,000 219,270 —

Reinsurance (Tables)

Reinsurance (Tables)	6 Months Ended
	Jun. 30, 2015
Reinsurance Disclosures [Abstract]
Schedule of List Of Direct, Assumed, And Ceded Reinsurance Amounts	Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Premiums written: Direct $ 621,408 572,314 1,220,191 1,130,205 Assumed 4,960 5,837 11,041 13,687 Ceded (94,235 ) (98,328 ) (181,011 ) (187,319 ) Net $ 532,133 479,823 1,050,221 956,573 Premiums earned: Direct $ 576,107 544,913 1,138,149 1,081,613 Assumed 5,093 10,385 11,001 20,570 Ceded (90,891 ) (91,673 ) (182,718 ) (182,063 ) Net $ 490,309 463,625 966,432 920,120 Loss and loss expense incurred: Direct $ 316,648 332,707 628,894 691,056 Assumed 4,228 7,377 8,890 14,856 Ceded (29,315 ) (42,289 ) (61,224 ) (87,571 ) Net $ 291,561 297,795 576,560 618,341
Schedule of Ceded Premiums and Losses Related to Flood Operations	Ceded to NFIP Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Ceded premiums written $ (62,479 ) (65,775 ) (116,321 ) (123,078 ) Ceded premiums earned (58,781 ) (59,213 ) (117,779 ) (117,499 ) Ceded loss and loss expense incurred (14,684 ) (26,712 ) (20,933 ) (34,091 )

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Schedule Of Revenue By Segment	Revenue by Segment Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Standard Commercial Lines: Net premiums earned: Commercial automobile $ 88,658 83,472 175,013 165,688 Workers compensation 70,954 68,992 139,431 138,405 General liability 119,207 111,591 234,178 220,409 Commercial property 66,549 61,226 131,112 121,412 Businessowners’ policies 23,178 21,279 45,877 42,148 Bonds 5,106 4,734 10,106 9,490 Other 3,553 3,213 7,021 6,396 Miscellaneous income 2,563 1,571 4,232 10,485 Total Standard Commercial Lines revenue 379,768 356,078 746,970 714,433 Standard Personal Lines: Net premiums earned: Personal automobile 36,740 38,022 73,750 76,248 Homeowners 33,731 33,576 67,452 66,874 Other 1,600 2,946 3,348 6,240 Miscellaneous income 291 337 591 1,242 Total Standard Personal Lines revenue 72,362 74,881 145,141 150,604 E&S Lines: Net premiums earned: General liability 28,793 23,936 55,519 45,867 Commercial property 10,464 9,379 20,119 18,496 Commercial automobile 1,776 1,259 3,506 2,447 Total E&S Lines revenue 41,033 34,574 79,144 66,810 Investments: Net investment income 32,230 36,774 59,147 72,308 Net realized investment (losses) gains (3,420 ) 4,539 15,463 11,757 Total Investments revenue 28,810 41,313 74,610 84,065 Total segments revenue 521,973 506,846 1,045,865 1,015,912 Other income — 3 — 8 Total revenues $ 521,973 506,849 1,045,865 1,015,920
Schedule of Income Before Federal Income Tax	Income Before Federal Income Tax Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Standard Commercial Lines: Underwriting gain $ 35,241 15,703 65,277 12,073 GAAP combined ratio 90.7 % 95.6 91.2 98.3 Statutory combined ratio 90.1 95.5 89.9 97.8 Standard Personal Lines: Underwriting loss $ (4,655 ) (5,582 ) (7,121 ) (7,942 ) GAAP combined ratio 106.5 % 107.5 104.9 105.3 Statutory combined ratio 105.4 106.1 105.2 105.3 E&S Insurance Operations: Underwriting (loss) gain $ (1,462 ) (37 ) (3,011 ) 938 GAAP combined ratio 103.6 % 100.1 103.8 98.6 Statutory combined ratio 102.7 99.9 102.5 98.8 Investments: Net investment income $ 32,230 36,774 59,147 72,308 Net realized investment (losses) gains (3,420 ) 4,539 15,463 11,757 Total investment income, before federal income tax 28,810 41,313 74,610 84,065 Tax on investment income 6,254 10,941 18,572 22,516 Total investment income, after federal income tax $ 22,556 30,372 56,038 61,549
Schedule of Reconciliation of Segment Results to Income Before Federal Income Tax	Reconciliation of Segment Results to Income Before Federal Income Tax Quarter ended June 30, Six Months ended June 30, ($ in thousands) 2015 2014 2015 2014 Underwriting gain (loss), before federal income tax Standard Commercial Lines $ 35,241 15,703 65,277 12,073 Standard Personal Lines (4,655 ) (5,582 ) (7,121 ) (7,942 ) E&S Lines (1,462 ) (37 ) (3,011 ) 938 Investment income, before federal income tax 28,810 41,313 74,610 84,065 Total all segments 57,934 51,397 129,755 89,134 Interest expense (5,490 ) (5,425 ) (10,969 ) (10,986 ) General corporate and other expenses (5,679 ) (6,451 ) (15,731 ) (13,543 ) Income before federal income tax $ 46,765 39,521 103,055 64,605

Retirement Plans (Table)

Retirement Plans (Table)	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Components Of Net Periodic Benefit Cost	Retirement Income Plan Retirement Life Plan ($ in thousands) 2015 2014 2015 2014 Components of Net Periodic Benefit Cost: Net Periodic Benefit Cost: Service cost $ 1,963 1,626 — — Interest cost 3,501 3,253 63 73 Expected return on plan assets (3,990 ) (3,918 ) — — Amortization of unrecognized net actuarial loss 1,695 368 14 13 Total net periodic cost $ 3,169 1,329 77 86 Retirement Income Plan Retirement Life Plan ($ in thousands) 2015 2014 2015 2014 Components of Net Periodic Benefit Cost: Net Periodic Benefit Cost: Service cost $ 3,927 3,253 — — Interest cost 7,003 6,507 126 146 Expected return on plan assets (7,981 ) (7,837 ) — — Amortization of unrecognized net actuarial loss 3,390 735 28 26 Total net periodic cost $ 6,339 2,658 154 172
Schedule Of Weighted-Average Expense Assumptions	Retirement Income Plan Retirement Life Plan 2015 2014 2015 2014 Weighted-Average Expense Assumptions: Discount rate 4.29 % 5.16 4.08 % 4.85 Expected return on plan assets 6.27 6.92 — — Rate of compensation increase 4.00 4.00 — —

Comprehensive Income (Tables)

Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Schedule of Components of Comprehensive Income-Gross and Net of Tax	Second Quarter 2015 ($ in thousands) Gross Tax Net Net income $ 46,765 12,997 33,768 Components of OCI: Unrealized (losses) gains on investment securities : Unrealized holding losses during the period (60,244 ) (21,084 ) (39,160 ) Amounts reclassified into net income: HTM securities (185 ) (65 ) (120 ) Realized losses on AFS securities 3,422 1,197 2,225 Net unrealized losses (57,007 ) (19,952 ) (37,055 ) Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 1,709 598 1,111 Defined benefit pension and post-retirement plans 1,709 598 1,111 Other comprehensive loss (55,298 ) (19,354 ) (35,944 ) Comprehensive loss $ (8,533 ) (6,357 ) (2,176 ) Second Quarter 2014 ($ in thousands) Gross Tax Net Net income $ 39,521 10,180 29,341 Components of OCI: Unrealized gains (losses) on investment securities : Unrealized holding gains during the period 45,122 15,793 29,329 Amounts reclassified into net income: HTM securities (221 ) (77 ) (144 ) Non-credit OTTI 469 164 305 Realized gains on AFS securities (5,008 ) (1,753 ) (3,255 ) Net unrealized gains 40,362 14,127 26,235 Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 381 133 248 Defined benefit pension and post-retirement plans 381 133 248 Other comprehensive income 40,743 14,260 26,483 Comprehensive income $ 80,264 24,440 55,824 Six Months 2015 ($ in thousands) Gross Tax Net Net income $ 103,055 29,579 73,476 Components of OCI: Unrealized (losses) gains on investment securities : Unrealized holding losses during the period (36,267 ) (12,693 ) (23,574 ) Amounts reclassified into net income: HTM securities (446 ) (156 ) (290 ) Non-credit OTTI 357 125 232 Realized gains on AFS securities (16,473 ) (5,766 ) (10,707 ) Net unrealized losses (52,829 ) (18,490 ) (34,339 ) Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 3,418 1,196 2,222 Defined benefit pension and post-retirement plans 3,418 1,196 2,222 Other comprehensive loss (49,411 ) (17,294 ) (32,117 ) Comprehensive income $ 53,644 12,285 41,359 Six Months 2014 ($ in thousands) Gross Tax Net Net income $ 64,605 17,290 47,315 Components of OCI: Unrealized gains (losses) on investment securities : Unrealized holding gains during the period 78,086 27,331 50,755 Amounts reclassified into net income: HTM securities (677 ) (237 ) (440 ) Non-credit OTTI 469 164 305 Realized gains on AFS securities (12,237 ) (4,283 ) (7,954 ) Net unrealized gains 65,641 22,975 42,666 Defined benefit pension and post-retirement plans: Amounts reclassified into net income: Net actuarial loss 761 266 495 Defined benefit pension and post-retirement plans 761 266 495 Other comprehensive income 66,402 23,241 43,161 Comprehensive income $ 131,007 40,531 90,476
Schedule of Components of Accumulated Other Comprehensive Income	June 30, 2015 Net Unrealized (Loss) Gain on Investment Securities Defined Benefit Pension and Post-Retirement Plans Total Accumulated Other Comprehensive Income (Loss) ($ in thousands) OTTI Related HTM Related All Other Investments Subtotal Balance, December 31, 2014 $ (514 ) 623 80,284 80,393 (60,605 ) 19,788 OCI before reclassifications — — (23,574 ) (23,574 ) — (23,574 ) Amounts reclassified from AOCI 232 (290 ) (10,707 ) (10,765 ) 2,222 (8,543 ) Net current period OCI 232 (290 ) (34,281 ) (34,339 ) 2,222 (32,117 ) Balance, June 30, 2015 $ (282 ) 333 46,003 46,054 (58,383 ) (12,329 )
Schedule of Reclassifications Out Of Accumulated Other Comprehensive Income	Quarter ended Six Months ended ($ in thousands) 2015 2014 2015 2014 Affected Line Item in the Unaudited Consolidated Statement of Income OTTI related Non-credit OTTI on disposed securities $ — 469 357 469 Net realized (losses) gains — 469 357 469 Income before federal income tax — (164 ) (125 ) (164 ) Total federal income tax expense — 305 232 305 Net income HTM related Unrealized losses on HTM disposals 87 51 137 75 Net realized (losses) gains Amortization of net unrealized gains on HTM securities (272 ) (272 ) (583 ) (752 ) Net investment income earned (185 ) (221 ) (446 ) (677 ) Income before federal income tax 65 77 156 237 Total federal income tax expense (120 ) (144 ) (290 ) (440 ) Net income Realized gains and losses on AFS and OTTI Realized losses (gains) on AFS disposals and OTTI 3,422 (5,008 ) (16,473 ) (12,237 ) Net realized (losses) gains 3,422 (5,008 ) (16,473 ) (12,237 ) Income before federal income tax (1,197 ) 1,753 5,766 4,283 Total federal income tax expense 2,225 (3,255 ) (10,707 ) (7,954 ) Net income Defined benefit pension and post-retirement life plans Net actuarial loss 372 88 743 175 Loss and loss expense incurred 1,337 293 2,675 586 Policy acquisition costs Total defined benefit pension and post-retirement life 1,709 381 3,418 761 Income before federal income tax (598 ) (133 ) (1,196 ) (266 ) Total federal income tax expense 1,111 248 2,222 495 Net income Total reclassifications for the period $ 3,216 (2,846 ) (8,543 ) (7,594 ) Net income

Statements of Cash Flow (Cash F

Statements of Cash Flow (Cash Flow Supplemental Disclosures) (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014
Interest		$ 10,947	$ 11,113
Federal income tax		8,500	3,699
Corporate Actions Related To Equity Securities, AFS	[1]	884	334
Assets acquired under capital lease arrangements		3,478	2,124
AFS Fixed Maturity Securities [Member]
Tax-free exchange of fixed maturity security		17,120	9,180
Held-to-maturity Securities [Member]
Tax-free exchange of fixed maturity security		0	15
National Flood Insurance Program [Member]
Restricted Cash		$ 5,200	$ 8,500
[1]	1Examples of such corporate actions include non-cash acquisitions and stock splits.

Investments (Held-To-Maturity S

Investments (Held-To-Maturity Securities Disclosure) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 247,346	$ 317,179
Net Unrealized Gains (Losses)	513	958
Carrying Value	247,859	318,137
Unrecognized Holding Gains	11,846	15,824
Unrecognized Holding Losses	(3)	0
HTM, Fair Value	$ 259,702	333,961
Held To Maturity securities average duration	1 year 7 months 8 days
Foreign Government [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 5,292	5,292
Net Unrealized Gains (Losses)	3	47
Carrying Value	5,295	5,339
Unrecognized Holding Gains	0	55
Unrecognized Holding Losses	(3)	0
HTM, Fair Value	5,292	5,394
Obligations of States and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	216,870	285,301
Net Unrealized Gains (Losses)	1,395	2,071
Carrying Value	218,265	287,372
Unrecognized Holding Gains	8,441	11,760
Unrecognized Holding Losses	0	0
HTM, Fair Value	226,706	299,132
Corporate Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	18,532	18,899
Net Unrealized Gains (Losses)	(265)	(273)
Carrying Value	18,267	18,626
Unrecognized Holding Gains	2,565	2,796
Unrecognized Holding Losses	0	0
HTM, Fair Value	20,832	21,422
Asset-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,976	2,818
Net Unrealized Gains (Losses)	(280)	(455)
Carrying Value	1,696	2,363
Unrecognized Holding Gains	285	460
Unrecognized Holding Losses	0	0
HTM, Fair Value	1,981	2,823
Commercial Mortgage Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	4,676	4,869
Net Unrealized Gains (Losses)	(340)	(432)
Carrying Value	4,336	4,437
Unrecognized Holding Gains	555	753
Unrecognized Holding Losses	0	0
HTM, Fair Value	$ 4,891	$ 5,190

Investments (Available-For-Sale

Investments (Available-For-Sale Securities Disclosure) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		$ 4,351,361	$ 4,134,797
Unrealized Gains		90,813	133,303
Unrealized Losses		(20,473)	(10,578)
Total AFS securities		4,421,701	4,257,522
AFS Fixed Income Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		4,133,223	3,975,786
Unrealized Gains		75,631	100,578
Unrealized Losses		(16,036)	(10,242)
Total AFS securities		4,192,818	4,066,122
AFS Fixed Income Securities [Member] | U.S. Government and Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		109,506	116,666
Unrealized Gains		6,420	7,592
Unrealized Losses		(65)	(128)
Total AFS securities		115,861	124,130
AFS Fixed Income Securities [Member] | Foreign Government [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		22,026	27,035
Unrealized Gains		693	796
Unrealized Losses		0	0
Total AFS securities		22,719	27,831
AFS Fixed Income Securities [Member] | Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		1,277,635	1,208,776
Unrealized Gains		23,242	38,217
Unrealized Losses		(4,819)	(729)
Total AFS securities		1,296,058	1,246,264
AFS Fixed Income Securities [Member] | Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		1,794,698	1,763,427
Unrealized Gains		36,201	42,188
Unrealized Losses		(6,324)	(5,809)
Total AFS securities		1,824,575	1,799,806
AFS Fixed Income Securities [Member] | Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		213,662	176,837
Unrealized Gains		990	760
Unrealized Losses		(155)	(373)
Total AFS securities		214,497	177,224
AFS Fixed Income Securities [Member] | Commercial Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost	[1]	213,497	177,932
Unrealized Gains	[1]	1,861	2,438
Unrealized Losses	[1]	(1,180)	(777)
Total AFS securities	[1]	214,178	179,593
Government guaranteed agency securities fair value		10,200	13,200
AFS Fixed Income Securities [Member] | Residential Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost	[2]	502,199	505,113
Unrealized Gains	[2]	6,224	8,587
Unrealized Losses	[2]	(3,493)	(2,426)
Total AFS securities	[2]	504,930	511,274
Government guaranteed agency securities fair value		25,700	32,400
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		218,138	159,011
Unrealized Gains		15,182	32,725
Unrealized Losses		(4,437)	(336)
Total AFS securities		228,883	191,400
Equity Securities [Member] | Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		200,150	159,011
Unrealized Gains		15,159	32,725
Unrealized Losses		(4,190)	(336)
Total AFS securities		211,119	$ 191,400
Equity Securities [Member] | Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost/Amortized Cost		17,988
Unrealized Gains		23
Unrealized Losses		(247)
Total AFS securities		$ 17,764
[1]	CMBS includes government guaranteed agency securities with a fair value of $10.2 million at June 30, 2015 and $13.2 million at December 31, 2014.
[2]	RMBS includes government guaranteed agency securities with a fair value of $25.7 million at June 30, 2015 and $32.4 million at December 31, 2014.

Investments (Fair Value and Gro

Investments (Fair Value and Gross Pre-Tax Net Unrealized Unrecognized Loss of Securities By Length of Time) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
AFS Fair Value, Less than 12 months		$ 1,251,763	$ 466,387
AFS Unrealized Losses, Less than 12 months	[1]	(17,117)	(2,408)
AFS Fair Value, 12 months or longer		148,571	442,058
AFS Unrealized Losses, 12 months or longer	[1]	(3,356)	(8,170)
HTM Fair Value, Less than 12 months		180	196
HTM Unrealized Losses, Less than 12 months	[1]	(2)	(3)
HTM Unrecognized Gains, Less than 12 months	[2]	0	1
HTM Fair Value, 12 months or longer		1,540	2,235
HTM Unrealized Losses, 12 months or longer	[1]	(280)	(455)
HTM Unrecognized Gains, 12 months or longer	[2]	272	439
Total AFS and HTM Fair Value, Less than 12 months		1,251,943	466,583
Total AFS and HTM Unrealized Losses, Less than 12 months	[1]	(17,119)	(2,411)
Total AFS and HTM Securities Unrecognized Gains, Less Than 12 Months	[2]	0	1
Total AFS and HTM Fair Value, 12 months or longer		150,111	444,293
Total AFS and HTM Unrealized Losses, 12 months or longer	[1]	(3,636)	(8,625)
Total AFS and HTM Securities Unrecognized Gains, 12 months or longer	[2]	272	439
Obligations of States and Political Subdivisions [Member]
HTM Fair Value, Less than 12 months		180	196
HTM Unrealized Losses, Less than 12 months	[1]	(2)	(3)
HTM Unrecognized Gains, Less than 12 months	[2]	0	1
HTM Fair Value, 12 months or longer		0	0
HTM Unrealized Losses, 12 months or longer	[1]	0	0
HTM Unrecognized Gains, 12 months or longer	[2]	0	0
Asset-Backed Securities [Member]
HTM Fair Value, Less than 12 months		0	0
HTM Unrealized Losses, Less than 12 months	[1]	0	0
HTM Unrecognized Gains, Less than 12 months	[2]	0	0
HTM Fair Value, 12 months or longer		1,540	2,235
HTM Unrealized Losses, 12 months or longer	[1]	(280)	(455)
HTM Unrecognized Gains, 12 months or longer	[2]	272	439
AFS Fixed Income Securities [Member]
AFS Fair Value, Less than 12 months		1,139,979	461,125
AFS Unrealized Losses, Less than 12 months	[1]	(12,680)	(2,072)
AFS Fair Value, 12 months or longer		148,571	442,058
AFS Unrealized Losses, 12 months or longer	[1]	(3,356)	(8,170)
AFS Fixed Income Securities [Member] | U.S. Government and Government Agencies [Member]
AFS Fair Value, Less than 12 months		7,513	7,567
AFS Unrealized Losses, Less than 12 months	[1]	(62)	(13)
AFS Fair Value, 12 months or longer		398	10,866
AFS Unrealized Losses, 12 months or longer	[1]	(3)	(115)
AFS Fixed Income Securities [Member] | Obligations of States and Political Subdivisions [Member]
AFS Fair Value, Less than 12 months		398,429	47,510
AFS Unrealized Losses, Less than 12 months	[1]	(4,819)	(105)
AFS Fair Value, 12 months or longer		0	64,018
AFS Unrealized Losses, 12 months or longer	[1]	0	(624)
AFS Fixed Income Securities [Member] | Corporate Securities [Member]
AFS Fair Value, Less than 12 months		440,510	276,648
AFS Unrealized Losses, Less than 12 months	[1]	(4,939)	(1,734)
AFS Fair Value, 12 months or longer		50,187	153,613
AFS Unrealized Losses, 12 months or longer	[1]	(1,385)	(4,075)
AFS Fixed Income Securities [Member] | Asset-Backed Securities [Member]
AFS Fair Value, Less than 12 months		40,185	113,202
AFS Unrealized Losses, Less than 12 months	[1]	(40)	(178)
AFS Fair Value, 12 months or longer		15,071	15,618
AFS Unrealized Losses, 12 months or longer	[1]	(115)	(195)
AFS Fixed Income Securities [Member] | Commercial Mortgage Backed Securities [Member]
AFS Fair Value, Less than 12 months		80,860	12,799
AFS Unrealized Losses, Less than 12 months	[1]	(1,057)	(34)
AFS Fair Value, 12 months or longer		15,579	59,219
AFS Unrealized Losses, 12 months or longer	[1]	(123)	(743)
AFS Fixed Income Securities [Member] | Residential Mortgage Backed Securities [Member]
AFS Fair Value, Less than 12 months		172,482	3,399
AFS Unrealized Losses, Less than 12 months	[1]	(1,763)	(8)
AFS Fair Value, 12 months or longer		67,336	138,724
AFS Unrealized Losses, 12 months or longer	[1]	(1,730)	(2,418)
Equity Securities [Member]
AFS Fair Value, Less than 12 months		111,784	5,262
AFS Unrealized Losses, Less than 12 months	[1]	(4,437)	(336)
AFS Fair Value, 12 months or longer		0	0
AFS Unrealized Losses, 12 months or longer	[1]	0	0
Common Stock [Member] | Equity Securities [Member]
AFS Fair Value, Less than 12 months		103,352	5,262
AFS Unrealized Losses, Less than 12 months	[1]	(4,190)	(336)
AFS Fair Value, 12 months or longer		0	0
AFS Unrealized Losses, 12 months or longer	[1]	0	$ 0
Preferred Stock [Member] | Equity Securities [Member]
AFS Fair Value, Less than 12 months		8,432
AFS Unrealized Losses, Less than 12 months	[1]	(247)
AFS Fair Value, 12 months or longer		0
AFS Unrealized Losses, 12 months or longer	[1]	$ 0
[1]	Gross unrealized losses include non-OTTI unrealized amounts and OTTI losses recognized in AOCI. In addition, this column includes remaining unrealized gain or loss amounts on securities that were transferred to an HTM designation in the first quarter of 2009 for those securities that are in a net unrealized/unrecognized loss position.
[2]	Unrecognized gains represent fair value fluctuations from the later of: (i) the date a security is designated as HTM; or (ii) the date that an OTTI charge is recognized on an HTM security.

Investments (Number of Securiti

Investments (Number of Securities in an Unrealized Unrecognized Loss Position) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)Securities	Dec. 31, 2014USD ($)Securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized Unrecognized Loss	$ 20,483	$ 10,596
Eighty Percent to Ninety-Nine Percent [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In An Unrealized/Unrecognized Loss Position | Securities	495	350
Unrealized Unrecognized Loss	$ 20,483	$ 10,596
Sixty Percent to Seventy-Nine Percent [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In An Unrealized/Unrecognized Loss Position | Securities	0	0
Unrealized Unrecognized Loss	$ 0	$ 0
Forty Percent to Fifty-Nine Percent [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In An Unrealized/Unrecognized Loss Position | Securities	0	0
Unrealized Unrecognized Loss	$ 0	$ 0
Twenty Percent to Thirty-Nine Percent [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In An Unrealized/Unrecognized Loss Position | Securities	0	0
Unrealized Unrecognized Loss	$ 0	$ 0
Zero Percent to Nineteen Percent [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In An Unrealized/Unrecognized Loss Position | Securities	0	0
Unrealized Unrecognized Loss	$ 0	$ 0
10 year U.S. Treasury Note [Member]
Schedule of Available-for-sale Securities [Line Items]
Increase of Yield on 10-year U.S. Treasury Note	18
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In An Unrealized/Unrecognized Loss Position | Securities	27
Unrealized Loss on Securities	$ 4,400
Percentage Decline In Fair Value Cost	4.00%

Investments (HTM Fixed Income S

Investments (HTM Fixed Income Securities by Contractual Maturity) (Details) - Major Types of Debt Securities [Domain] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less carrying value	$ 87,104
Due after one year through five years carrying value	149,865
Due after five years through 10 years carrying value	10,890
Carrying Value	247,859	$ 318,137
Due in one year or less fair value	88,688
Due after one year through five years fair value	158,092
Due after five years through 10 years fair value	12,922
HTM, Fair Value	$ 259,702	$ 333,961

Investments (AFS Fixed Income s

Investments (AFS Fixed Income securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Due in one year or less fair value	$ 447,462
Due after one year through five years fair value	2,146,816
Due after five years through 10 years fair value	1,504,185
Due after 10 years fair value	94,355
Total AFS fixed income securities	$ 4,192,818	$ 4,066,122

Investments (Other Investment P

Investments (Other Investment Portfolio by Strategy and the Remaining Commitment Amount Associated With Each Strategy) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Carrying Value	$ 85,420	$ 99,203
Other Investments [Member]
Carrying Value	85,420	99,203
Remaining Commitment	64,530
Alternative Investments [Member]
Carrying Value	74,188	92,968
Remaining Commitment	62,261
Secondary Private Equity Member | Alternative Investments [Member]
Carrying Value	18,997	21,807
Remaining Commitment	7,072
Private Equity [Member] | Alternative Investments [Member]
Carrying Value	16,027	20,126
Remaining Commitment	8,823
Energy Power Generation [Member] | Alternative Investments [Member]
Carrying Value	9,662	14,445
Remaining Commitment	19,610
Real Estate Strategy [Member] | Alternative Investments [Member]
Carrying Value	8,242	11,452
Remaining Commitment	9,975
Mezzanine Financing [Member] | Alternative Investments [Member]
Carrying Value	7,563	9,853
Remaining Commitment	13,383
Distressed debt [Member] | Alternative Investments [Member]
Carrying Value	7,000	8,679
Remaining Commitment	3,048
Venture Capital [Member] | Alternative Investments [Member]
Carrying Value	6,697	6,606
Remaining Commitment	350
Other Securities [Member]
Carrying Value	11,232	$ 6,235
Remaining Commitment	$ 2,269

Investments (Aggregated Income

Investments (Aggregated Income Statement Summarized Financial Information for Partnerhips in our Alternative Investment Portfolio) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014
Schedule of Equity Method Investments [Line Items]
Net investment income earned	$ 32,230		$ 36,774		$ 59,147		$ 72,308
Alternative Investments [Member]
Schedule of Equity Method Investments [Line Items]
Net investment income earned	$ 1,400		$ 3,600		$ (2,100)		$ 8,800
Investments accounted for under the equity method [Member]
Schedule of Equity Method Investments [Line Items]
Net Investment Income		$ 8,500		$ 22,800		$ 95,600		$ 85,700
Realized gains		279,400		74,200		592,500		197,600
Net change in unrealized (depreciation) appreciation		(223,400)		207,600		(866,900)		842,400
Net income (loss)		$ 64,500		$ 304,600		$ (178,800)		$ 1,125,700

Investments (Investments Pledge

Investments (Investments Pledged as Collateral) (Details) $ in Millions	Jun. 30, 2015USD ($)
Investments Pledged As Collateral [Line Items]
Fixed Income Securities Pledged For FHLBI Collateral	$ 63.7
Securities Pledged As Collateral For Reinsurance Obligations	11.7
Carrying Value Bonds On Deposit With Various State And Regulatory Agencies	24.7
Securities Pledged As Collateral	100.1
Outstanding Borrowing With The Federal Home Loan Bank Of Indianapolis	60
U.S. Government and Government Agencies [Member]
Investments Pledged As Collateral [Line Items]
Fixed Income Securities Pledged For FHLBI Collateral	7.7
Securities Pledged As Collateral For Reinsurance Obligations	0
Carrying Value Bonds On Deposit With Various State And Regulatory Agencies	24.7
Securities Pledged As Collateral	32.4
Obligations of States and Political Subdivisions [Member]
Investments Pledged As Collateral [Line Items]
Fixed Income Securities Pledged For FHLBI Collateral	0
Securities Pledged As Collateral For Reinsurance Obligations	4.9
Carrying Value Bonds On Deposit With Various State And Regulatory Agencies	0
Securities Pledged As Collateral	4.9
Corporate Securities [Member]
Investments Pledged As Collateral [Line Items]
Fixed Income Securities Pledged For FHLBI Collateral	0
Securities Pledged As Collateral For Reinsurance Obligations	4.8
Carrying Value Bonds On Deposit With Various State And Regulatory Agencies	0
Securities Pledged As Collateral	4.8
Commercial Mortgage Backed Securities [Member]
Investments Pledged As Collateral [Line Items]
Fixed Income Securities Pledged For FHLBI Collateral	1.5
Securities Pledged As Collateral For Reinsurance Obligations	0
Carrying Value Bonds On Deposit With Various State And Regulatory Agencies	0
Securities Pledged As Collateral	1.5
Residential Mortgage Backed Securities [Member]
Investments Pledged As Collateral [Line Items]
Fixed Income Securities Pledged For FHLBI Collateral	54.5
Securities Pledged As Collateral For Reinsurance Obligations	2
Carrying Value Bonds On Deposit With Various State And Regulatory Agencies	0
Securities Pledged As Collateral	$ 56.5

Investments (Credit Concentrati

Investments (Credit Concentration Risk) (Details)	Jun. 30, 2015	Dec. 31, 2014
Investments [Abstract]
Maximum exposure to credit concentration risk of the Company's stockholder's equity other than certain U.S. government agencies	10.00%	10.00%

Investments (Net Investment Inc

Investments (Net Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net Investment Income [Line Items]
Net investment income earned	$ 32,230	$ 36,774	$ 59,147	$ 72,308
Fixed Income Securities [Member]
Net Investment Income [Line Items]
Net investment income earned	30,659	33,781	61,626	64,809
Equity Securities [Member]
Net Investment Income [Line Items]
Net investment income earned	2,384	1,736	4,176	3,185
Short-Term Investments [Member]
Net Investment Income [Line Items]
Net investment income earned	23	14	48	33
Other Investments [Member]
Net Investment Income [Line Items]
Net investment income earned	1,422	3,553	(2,118)	8,771
Investment Expenses [Member]
Net Investment Income [Line Items]
Net investment income earned	$ (2,258)	$ (2,310)	$ (4,585)	$ (4,490)

Investments (OTTI by Asset Type

Investments (OTTI by Asset Type) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
OTTI Losses Gross	$ 4,451	$ 419	$ 6,545	$ 1,382
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0	0	0	0
OTTI Losses Recognized in Earnings	4,451	419	6,545	1,382
Residential Mortgage Backed Securities [Member] | AFS Fixed Income Securities [Member]
OTTI Losses Gross			1
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income			0
OTTI Losses Recognized in Earnings			1
AFS Fixed Income Securities [Member]
OTTI Losses Gross	183		1,193
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0		0
OTTI Losses Recognized in Earnings	183		1,193
AFS Fixed Income Securities [Member] | Corporate Securities [Member]
OTTI Losses Gross	183		1,192
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0		0
OTTI Losses Recognized in Earnings	183		1,192
Total AFS Securities [Member] | Equity Securities [Member]
OTTI Losses Gross	4,268		5,352
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0		0
OTTI Losses Recognized in Earnings	4,268		5,352
Common Stock [Member] | Total AFS Securities [Member] | Equity Securities [Member]
OTTI Losses Gross	4,088	419	5,172	1,382
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0	0	0	0
OTTI Losses Recognized in Earnings	4,088	$ 419	5,172	$ 1,382
Preferred Stock [Member] | Total AFS Securities [Member] | Equity Securities [Member]
OTTI Losses Gross	180		180
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0		0
OTTI Losses Recognized in Earnings	$ 180		$ 180

Investments (Gross Credit Loss

Investments (Gross Credit Loss Impairments of Fixed Maturity Securities for Which a Portion of the OTTI Charge was Recognized in OCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Investments [Abstract]
Balance, beginning of period	$ 1,013	$ 7,488	$ 5,444	$ 7,488
Addition for the amount related to credit loss for which an OTTI was not previously recognized	0	0	0	0
Reductions for securities sold during the period	0	(1,954)	(4,431)	(1,954)
Reductions for securities for which the amount previously recognized in OCI was recognized in earnings because of intention or potential requirement to sell before recovery of amortized cost	0	0	0	0
Additional increases to the amount related to credit loss for which an OTTI was previously recognized	0	0	0	0
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	0	0	0	0
Balance, end of period	$ 1,013	$ 5,534	$ 1,013	$ 5,534

Investments (Components Of Net

Investments (Components Of Net Realized Gains, Excluding OTTI Charges) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
HTM fixed income securities Gains	$ 2	$ 3	$ 2	$ 3
HTM fixed income securities Losses	0	(3)	(1)	(14)
Other investments Gains	0	0	0	0
Other Investments Losses	0	0	(654)	0
Total net realized gains (excluding OTTI charges)	1,031	4,958	22,008	13,139
Proceeds From Sale Of Available For Sale Securities	19,500		157,900
Fixed Income Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
AFS securities Gains	487	780	1,989	938
AFS securities Losses	(18)	(31)	(130)	(143)
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
AFS securities Gains	830	4,362	22,148	12,679
AFS securities Losses	$ (270)	$ (153)	$ (1,346)	$ (324)

Indebtedness (Details)

Indebtedness (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jan. 31, 2015
Debt Instrument [Line Items]
Number of Insurance Subsidiaries	ten
Indiana Subsidiaries that are members of the FHLBI	two
Outstanding Borrowing With The Federal Home Loan Bank Of Indianapolis	$ 60
Zero Point Sixty Three Percent Borrowing From Federal Home Loan Bank Due July 22, 2016 [Member]
Debt Instrument [Line Items]
Outstanding Borrowing With The Federal Home Loan Bank Of Indianapolis		$ 15
Unpaid principal amount interest rate	0.63%

Fair Value Measurements (Carryi

Fair Value Measurements (Carrying Value and Estimated Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Held-to-maturity Securities	$ 247,859	$ 318,137
Available-for-sale Securities	4,192,818	4,066,122
Equity securities, AFS	228,883	191,400
Short-term investments	168,349	131,972
Notes payable	394,305	379,297
Carrying Amount [Member]
Held-to-maturity Securities	247,859	318,137
Available-for-sale Securities	4,192,818	4,066,122
Equity securities, AFS	228,883	191,400
Short-term investments	168,349	131,972
Notes payable	394,305	379,297
Carrying Amount [Member] | Zero Point Sixty Three Percent Borrowing From Federal Home Loan Bank Due July 22, 2016 [Member]
Notes payable	15,000	0
Carrying Amount [Member] | One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member]
Notes payable	45,000	45,000
Carrying Amount [Member] | Seven Point Twenty Five Percent Senior Notes [Member]
Notes payable	49,897	49,896
Carrying Amount [Member] | Six Point Seventy Percent Senior Notes [Member]
Notes payable	99,408	99,401
Carrying Amount [Member] | Five Point Eight Hundred Seventy Five Senior Notes [Member]
Notes payable	185,000	185,000
Fair Value [Member]
Held-to-maturity Securities	259,702	333,961
Available-for-sale Securities	4,192,818	4,066,122
Equity securities, AFS	228,883	191,400
Short-term investments	168,349	131,972
Notes payable	410,294	404,270
Fair Value [Member] | Zero Point Sixty Three Percent Borrowing From Federal Home Loan Bank Due July 22, 2016 [Member]
Notes payable	14,999	0
Fair Value [Member] | One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member]
Notes payable	45,290	45,244
Fair Value [Member] | Seven Point Twenty Five Percent Senior Notes [Member]
Notes payable	56,607	59,181
Fair Value [Member] | Six Point Seventy Percent Senior Notes [Member]
Notes payable	109,656	114,845
Fair Value [Member] | Five Point Eight Hundred Seventy Five Senior Notes [Member]
Notes payable	$ 183,742	$ 185,000

Fair Value Measurements (Quanti

Fair Value Measurements (Quantitative Disclosures of Fair Value Assets) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Available-for-sale Securities, Debt Securities		$ 4,192,818	$ 4,066,122
Equity securities, AFS		228,883	191,400
Total AFS securities		4,421,701	4,257,522
Short-term investments		168,349	131,972
Fair Value [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		4,192,818	4,066,122
Equity securities, AFS		228,883	191,400
Total AFS securities		4,421,701	4,257,522
Short-term investments		168,349	131,972
Total assets measured at fair value		4,590,050	4,389,494
Fair Value [Member] | U.S. Government and Government Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		115,861	124,130
Fair Value [Member] | Foreign Government [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		22,719	27,831
Fair Value [Member] | Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		1,296,058	1,246,264
Fair Value [Member] | Corporate Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		1,824,575	1,799,806
Fair Value [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		214,497	177,224
Fair Value [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		214,178	179,593
Fair Value [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		504,930	511,274
Fair Value [Member] | Common Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS		211,119	191,400
Fair Value [Member] | Preferred Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS		17,764
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	52,361	53,199
Equity securities, AFS	[1]	226,098	188,500
Total AFS securities	[1]	278,459	241,699
Short-term investments	[1]	168,349	131,972
Total assets measured at fair value	[1]	446,808	373,671
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | U.S. Government and Government Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	52,361	53,199
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Foreign Government [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	0	0
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	0	0
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Corporate Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	0	0
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	0	0
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	0	0
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	0	0
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Common Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS	[1]	208,334	188,500
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Preferred Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS	[1]	17,764
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	4,140,457	4,012,923
Equity securities, AFS	[1]	0	0
Total AFS securities	[1]	4,140,457	4,012,923
Short-term investments	[1]	0	0
Total assets measured at fair value	[1]	4,140,457	4,012,923
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government and Government Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	63,500	70,931
Significant Other Observable Inputs (Level 2) [Member] | Foreign Government [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	22,719	27,831
Significant Other Observable Inputs (Level 2) [Member] | Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	1,296,058	1,246,264
Significant Other Observable Inputs (Level 2) [Member] | Corporate Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	1,824,575	1,799,806
Significant Other Observable Inputs (Level 2) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	214,497	177,224
Significant Other Observable Inputs (Level 2) [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	214,178	179,593
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities	[1]	504,930	511,274
Significant Other Observable Inputs (Level 2) [Member] | Common Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS	[1]	0	0
Significant Other Observable Inputs (Level 2) [Member] | Preferred Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS	[1]	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Equity securities, AFS		2,785	2,900
Total AFS securities		2,785	2,900
Short-term investments		0	0
Total assets measured at fair value		2,785	2,900
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government and Government Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Government [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Significant Unobservable Inputs (Level 3) [Member] | Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Significant Unobservable Inputs (Level 3) [Member] | Corporate Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Significant Unobservable Inputs (Level 3) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale Securities, Debt Securities		0	0
Significant Unobservable Inputs (Level 3) [Member] | Common Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS		2,785	$ 2,900
Significant Unobservable Inputs (Level 3) [Member] | Preferred Stock [Member] | Fair Value, Measurements, Recurring [Member]
Equity securities, AFS		$ 0
[1]	1 There were no transfers of securities between Level 1 and Level 2.

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value (Changes in Fair Value of Securities Using Level 3 Inputs) (Details) - Common Stock [Member] - AFS Fixed Maturity Securities [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, December 31, 2014	$ 2,900
Total net (losses) gains for the period included in other comprehensive income	0
Total net (losses) gains for the period included in net income	0
Purchases	0
Sales	(115)
Issuances	0
Settlements	0
Transfers into Level 3	0
Transfers out of Level 3	0
Fair Value, June 30, 2015	$ 2,785

Fair Value Measurements (Quan46

Fair Value Measurements (Quantitative Information of Our Financial Assets and Liabilities That Were Disclosed at Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	$ 247,859	$ 318,137
Notes payable	394,305	379,297
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	259,702	333,961
Notes payable	410,294	404,270
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Notes payable	183,742	185,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	259,702	333,961
Notes payable	226,552	219,270
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Notes payable	0	0
Foreign Government [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	5,292	5,394
Foreign Government [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Foreign Government [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	5,292	5,394
Foreign Government [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Obligations of States and Political Subdivisions [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	226,706	299,132
Obligations of States and Political Subdivisions [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Obligations of States and Political Subdivisions [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	226,706	299,132
Obligations of States and Political Subdivisions [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Corporate Securities [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	20,832	21,422
Corporate Securities [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Corporate Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	20,832	21,422
Corporate Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Asset-Backed Securities [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	1,981	2,823
Asset-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Asset-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	1,981	2,823
Asset-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Commercial Mortgage Backed Securities [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	4,891	5,190
Commercial Mortgage Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Commercial Mortgage Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	4,891	5,190
Commercial Mortgage Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	0	0
Zero Point Sixty Three Percent Borrowing From Federal Home Loan Bank Due July 22, 2016 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	14,999
Zero Point Sixty Three Percent Borrowing From Federal Home Loan Bank Due July 22, 2016 [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0
Zero Point Sixty Three Percent Borrowing From Federal Home Loan Bank Due July 22, 2016 [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	14,999
Zero Point Sixty Three Percent Borrowing From Federal Home Loan Bank Due July 22, 2016 [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0
One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	45,290	45,244
One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0	0
One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	45,290	45,244
One Point Twenty Five Percent Borrowing From Federal Home Loan Bank [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0	0
Seven Point Twenty Five Percent Senior Notes [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	56,607	59,181
Seven Point Twenty Five Percent Senior Notes [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0	0
Seven Point Twenty Five Percent Senior Notes [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	56,607	59,181
Seven Point Twenty Five Percent Senior Notes [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0	0
Six Point Seventy Percent Senior Notes [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	109,656	114,845
Six Point Seventy Percent Senior Notes [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0	0
Six Point Seventy Percent Senior Notes [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	109,656	114,845
Six Point Seventy Percent Senior Notes [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0	0
Five Point Eight Hundred Seventy Five Senior Notes [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	183,742	185,000
Five Point Eight Hundred Seventy Five Senior Notes [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	183,742	185,000
Five Point Eight Hundred Seventy Five Senior Notes [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0	0
Five Point Eight Hundred Seventy Five Senior Notes [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 0	$ 0

Reinsurance (List of Direct, As

Reinsurance (List of Direct, Assumed, and Ceded Reinsurance Amounts) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Premiums written:
Direct	$ 621,408	$ 572,314	$ 1,220,191	$ 1,130,205
Assumed	4,960	5,837	11,041	13,687
Ceded premiums written	(94,235)	(98,328)	(181,011)	(187,319)
Net	532,133	479,823	1,050,221	956,573
Premiums earned:
Direct	576,107	544,913	1,138,149	1,081,613
Assumed	5,093	10,385	11,001	20,570
Ceded premiums earned	(90,891)	(91,673)	(182,718)	(182,063)
Net	490,309	463,625	966,432	920,120
Loss and loss expense incurred:
Direct	316,648	332,707	628,894	691,056
Assumed	4,228	7,377	8,890	14,856
Ceded loss and loss expense incurred	(29,315)	(42,289)	(61,224)	(87,571)
Net	$ 291,561	$ 297,795	$ 576,560	$ 618,341
Percentage of NFIP claims ceded by federal government			100.00%

Reinsurance (Ceded Premiums and

Reinsurance (Ceded Premiums and Losses Related to Flood Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Ceded premiums written	$ (94,235)	$ (98,328)	$ (181,011)	$ (187,319)
Ceded premiums earned	(90,891)	(91,673)	(182,718)	(182,063)
Ceded loss and loss expense incurred	(29,315)	(42,289)	(61,224)	(87,571)
National Flood Insurance Program [Member]
Ceded premiums written	(62,479)	(65,775)	(116,321)	(123,078)
Ceded premiums earned	(58,781)	(59,213)	(117,779)	(117,499)
Ceded loss and loss expense incurred	$ (14,684)	$ (26,712)	$ (20,933)	$ (34,091)

Segment Information Narrative (

Segment Information Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)
Number of Operating Segments		4
Gross premiums of self-insured pooled group renewal book of business sold	$ 37,000
Proceeds from sale of renewal rights		$ 0	$ 8,000

Segment Information (Revenue by

Segment Information (Revenue by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Total net premiums earned	$ 490,309	$ 463,625	$ 966,432	$ 920,120
Net investment income earned	32,230	36,774	59,147	72,308
Net realized investment gains	(3,420)	4,539	15,463	11,757
Total investment revenues	28,810	41,313	74,610	84,065
Other income	2,854	1,911	4,823	11,735
Total revenues	521,973	506,849	1,045,865	1,015,920
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	521,973	506,846	1,045,865	1,015,912
Other Income [Member]
Segment Reporting Information [Line Items]
Other income	0	3	0	8
Standard Commercial Lines [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	379,768	356,078	746,970	714,433
Standard Commercial Lines [Member] | Commercial Automobile [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	88,658	83,472	175,013	165,688
Standard Commercial Lines [Member] | Workers Compensation [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	70,954	68,992	139,431	138,405
Standard Commercial Lines [Member] | General Liability [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	119,207	111,591	234,178	220,409
Standard Commercial Lines [Member] | Commercial Property [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	66,549	61,226	131,112	121,412
Standard Commercial Lines [Member] | Business Owners' Policies [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	23,178	21,279	45,877	42,148
Standard Commercial Lines [Member] | Bonds Segment [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	5,106	4,734	10,106	9,490
Standard Commercial Lines [Member] | Other Commercial [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	3,553	3,213	7,021	6,396
Standard Commercial Lines [Member] | Miscellaneous Income [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	2,563	1,571	4,232	10,485
Standard Personal Lines [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	72,362	74,881	145,141	150,604
Standard Personal Lines [Member] | Miscellaneous Income [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	291	337	591	1,242
Standard Personal Lines [Member] | Personal Automobile [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	36,740	38,022	73,750	76,248
Standard Personal Lines [Member] | Homeowners [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	33,731	33,576	67,452	66,874
Standard Personal Lines [Member] | Other Personal [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	1,600	2,946	3,348	6,240
Excess And Surplus Operations [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	41,033	34,574	79,144	66,810
Excess And Surplus Operations [Member] | Commercial Automobile [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	1,776	1,259	3,506	2,447
Excess And Surplus Operations [Member] | General Liability [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	28,793	23,936	55,519	45,867
Excess And Surplus Operations [Member] | Commercial Property [Member]
Segment Reporting Information [Line Items]
Total net premiums earned	$ 10,464	$ 9,379	$ 20,119	$ 18,496

Segment Information (Income Bef

Segment Information (Income Before Federal Income Tax) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Total investment revenues	$ 28,810	$ 41,313	$ 74,610	$ 84,065
Tax on investment income	6,254	10,941	18,572	22,516
Total investment income after federal income tax	22,556	30,372	56,038	61,549
Standard Commercial Lines [Member]
Segment Reporting Information [Line Items]
Underwriting gain (loss), before federal income tax	$ 35,241	$ 15,703	$ 65,277	$ 12,073
GAAP combined ratio	90.70%	95.60%	91.20%	98.30%
Statutory combined ratio	90.10%	95.50%	89.90%	97.80%
Standard Personal Lines [Member]
Segment Reporting Information [Line Items]
Underwriting gain (loss), before federal income tax	$ (4,655)	$ (5,582)	$ (7,121)	$ (7,942)
GAAP combined ratio	106.50%	107.50%	104.90%	105.30%
Statutory combined ratio	105.40%	106.10%	105.20%	105.30%
Excess And Surplus Operations [Member]
Segment Reporting Information [Line Items]
Underwriting gain (loss), before federal income tax	$ (1,462)	$ (37)	$ (3,011)	$ 938
GAAP combined ratio	103.60%	100.10%	103.80%	98.60%
Statutory combined ratio	102.70%	99.90%	102.50%	98.80%

Segment Information (Reconcilia

Segment Information (Reconciliation of Segment Results to Income Before Federal Income Tax (Details)) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Investment income, before federal income tax	$ 28,810	$ 41,313	$ 74,610	$ 84,065
Interest expense	(5,490)	(5,425)	(10,969)	(10,986)
General corporate and other expenses	(5,679)	(6,451)	(15,731)	(13,543)
Income before federal income tax	46,765	39,521	103,055	64,605
Standard Commercial Lines [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Underwriting gain (loss), before federal income tax	35,241	15,703	65,277	12,073
Standard Personal Lines [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Underwriting gain (loss), before federal income tax	(4,655)	(5,582)	(7,121)	(7,942)
Excess And Surplus Operations [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Underwriting gain (loss), before federal income tax	(1,462)	(37)	(3,011)	938
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total all segments	$ 57,934	$ 51,397	$ 129,755	$ 89,134

Retirement Plans (Components of

Retirement Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Retirement Income Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 1,963	$ 1,626	$ 3,927	$ 3,253
Interest cost	3,501	3,253	7,003	6,507
Expected return on plan assets	(3,990)	(3,918)	(7,981)	(7,837)
Amortization of unrecognized net actuarial loss	1,695	368	3,390	735
Total net periodic cost	3,169	1,329	6,339	2,658
Retirement Life Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0	0	0	0
Interest cost	63	73	126	146
Expected return on plan assets	0	0	0	0
Amortization of unrecognized net actuarial loss	14	13	28	26
Total net periodic cost	$ 77	$ 86	$ 154	$ 172

Retirement Plans (Weighted-Aver

Retirement Plans (Weighted-Average Expense Assumptions) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Retirement Income Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.29%	5.16%
Expected return on plan assets	6.27%	6.92%
Rate of compensation increase	4.00%	4.00%
Contributions by Employer	$ 6.4
Retirement Income Plan [Member] | Scenario, Forecast [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated contribution from the employer	$ 11.9
Retirement Life Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.08%	4.85%
Expected return on plan assets	0.00%	0.00%
Rate of compensation increase	0.00%	0.00%

Comprehensive Income (Component

Comprehensive Income (Components of Comprehensive Income-Gross and Net of Tax) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income, Gross	$ 46,765	$ 39,521	$ 103,055	$ 64,605
Unrealized holding (losses) gains during the period, Gross	(60,244)	45,122	(36,267)	78,086
Amounts reclassified into net income: HTM securities, Gross	(185)	(221)	(446)	(677)
Amounts reclassified into net income: non-credit OTTI		469	357	469
Realized losses (gains) on AFS securities, Gross	3,422	(5,008)	(16,473)	(12,237)
Net unrealized (losses) gains, Gross	(57,007)	40,362	(52,829)	65,641
Amount reclassified into Net Income: Net actuarial loss, Gross	1,709	381	3,418	761
Defined pension and other post-retirement benefit plans, gross	1,709	381	3,418	761
Other comprehensive (loss) income, Gross	(55,298)	40,743	(49,411)	66,402
Comprehensive (loss) income before tax	(8,533)	80,264	53,644	131,007
Net income, Tax	12,997	10,180	29,579	17,290
Unrealized holding (losses) gains during the period, Tax	(21,084)	15,793	(12,693)	27,331
HTM securities, Tax	(65)	(77)	(156)	(237)
Non-credit OTTI, Tax		164	125	164
Realized losses (gains) on AFS securities, Tax	1,197	(1,753)	(5,766)	(4,283)
Net unrealized (losses) gains, Tax	(19,952)	14,127	(18,490)	22,975
Amount reclassified into Net Income: Net actuarial loss, Tax	598	133	1,196	266
Defined pension and other post-retirement benefit plans, tax	598	133	1,196	266
Other comprehensive (loss) income, Tax	(19,354)	14,260	(17,294)	23,241
Comprehensive (loss) income tax	(6,357)	24,440	12,285	40,531
Net income	33,768	29,341	73,476	47,315
Unrealized holding (losses) gains arising during period	(39,160)	29,329	(23,574)	50,755
HTM Securities	(120)	(144)	(290)	(440)
Amounts reclassified into Net Income: Non-credit other-than-temporary impairments on disposed securities	0	305	232	305
Realized losses (gains) on available for sale securities	2,225	(3,255)	(10,707)	(7,954)
Total unrealized (losses) gains on investment securities	(37,055)	26,235	(34,339)	42,666
Amount reclassified into net income: Net actuarial loss	1,111	248	2,222	495
Total defined benefit pension and post-retirement plans	1,111	248	2,222	495
Other comprehensive (loss) income	(35,944)	26,483	(32,117)	43,161
Comprehensive (loss) income	$ (2,176)	$ 55,824	$ 41,359	$ 90,476

Comprehensive Income (Compone56

Comprehensive Income (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance,December 31, 2014			$ 19,788
Amounts reclassified into Net Income: Non-credit other-than-temporary impairments on disposed securities	$ 0	$ 305	232	$ 305
OCI before reclassifications, Defined Benefit Pension and Post Retirement Plans			0
Amount reclassified into net income: Net actuarial loss	1,111	248	2,222	495
Amounts reclassified from AOCI, HTM Related	(120)	(144)	(290)	(440)
Amounts reclassified from AOCI, All Other	2,225	(3,255)	(10,707)	(7,954)
Other comprehensive (loss) income	(35,944)	26,483	(32,117)	43,161
Other Comprehensive Income, Defined Benefit Pension and Post Retirement Plans, Adjustment, Net of Tax	1,111	$ 248	2,222	495
Ending Balance, June 30, 2015	(12,329)		(12,329)
Available-for-sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance,December 31, 2014			80,284
OCI before reclassifications			(23,574)
Other comprehensive (loss) income			(34,281)
Ending Balance, June 30, 2015	46,003		46,003
Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance,December 31, 2014			80,393
OCI before reclassifications			(23,574)
Amounts reclassified from AOCI			(10,765)
Other comprehensive (loss) income			(34,339)
Ending Balance, June 30, 2015	46,054		46,054
Accumulated Other-than-Temporary Impairment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance,December 31, 2014			(514)
OCI before reclassifications			0
Other comprehensive (loss) income			232
Ending Balance, June 30, 2015	(282)		(282)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Held-to-maturity Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance,December 31, 2014			623
OCI before reclassifications			0
Other comprehensive (loss) income			(290)
Ending Balance, June 30, 2015	333		333
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance,December 31, 2014			(60,605)
Amount reclassified into net income: Net actuarial loss			2,222
Ending Balance, June 30, 2015	(58,383)		(58,383)
Accumulated other comprehensive income (loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance,December 31, 2014			19,788
OCI before reclassifications			(23,574)
Amounts reclassified from AOCI			(8,543)
Other comprehensive (loss) income			(32,117)	$ 43,161
Ending Balance, June 30, 2015	$ (12,329)		$ (12,329)

Comprehensive Income (Reclassif

Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Amounts reclassified into net income: non-credit OTTI		$ 469	$ 357	$ 469
Non-credit OTTI, Tax		(164)	(125)	(164)
Amounts reclassified into Net Income: Non-credit other-than-temporary impairments on disposed securities	$ 0	305	232	305
Reclassification of net unrealized gains on HTM securities including disposals and amortization	(185)	(221)	(446)	(677)
Total HTM Related, Tax	65	77	156	237
Amounts reclassified from AOCI, HTM Related	(120)	(144)	(290)	(440)
Realized losses (gains) on AFS disposals and OTTI	3,422	(5,008)	(16,473)	(12,237)
Total realized gains on AFS disposals and OTTI	(1,197)	1,753	5,766	4,283
Amounts reclassified into net income: realized gains on available for sale securities	2,225	(3,255)	(10,707)	(7,954)
Amount reclassified into Net Income: Net actuarial loss, Gross	1,709	381	3,418	761
Defined pension and other post-retirement benefit plans, tax	(598)	(133)	(1,196)	(266)
Total defined benefit pension and post-retirement plans	1,111	248	2,222	495
Investment Income [Member]
Amortization of net unrealized gains on HTM securities	(272)	(272)	(583)	(752)
Income Before Federal Income Tax [Member]
Amounts reclassified into net income: non-credit OTTI	0	469	357	469
Reclassification of net unrealized gains on HTM securities including disposals and amortization	(185)	(221)	(446)	(677)
Realized losses (gains) on AFS disposals and OTTI	3,422	(5,008)	(16,473)	(12,237)
Amount reclassified into Net Income: Net actuarial loss, Gross	1,709	381	3,418	761
Total Federal Income Tax Expense [Member]
Non-credit OTTI, Tax	0	(164)	(125)	(164)
Total HTM Related, Tax	65	77	156	237
Total realized gains on AFS disposals and OTTI	(1,197)	1,753	5,766	4,283
Defined pension and other post-retirement benefit plans, tax	(598)	(133)	(1,196)	(266)
Net Income Financial Statement Line Item [Member]
Amounts reclassified into Net Income: Non-credit other-than-temporary impairments on disposed securities	0	305	232	305
Amounts reclassified from AOCI, HTM Related	(120)	(144)	(290)	(440)
Amounts reclassified into net income: realized gains on available for sale securities	2,225	(3,255)	(10,707)	(7,954)
Total defined benefit pension and post-retirement plans	1,111	248	2,222	495
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	3,216	(2,846)	(8,543)	(7,594)
Net Realized Investment Gains [Member]
Unrealized gains and losses on HTM disposals	87	51	137	75
Realized losses (gains) on AFS disposals and OTTI	3,422	(5,008)	(16,473)	(12,237)
Net Realized Investment Gains [Member] | Non-credit OTTI on Disposed Securities [Member]
Amounts reclassified into net income: non-credit OTTI	0	469	357	469
Loss And Loss Expense Incurred [Member]
Amount reclassified into Net Income: Net actuarial loss, Gross	372	88	743	175
Policy acquisition costs [Member]
Amount reclassified into Net Income: Net actuarial loss, Gross	$ 1,337	$ 293	$ 2,675	$ 586