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Investments (Tables) | 3 Months Ended
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Mar. 31, 2015
Investments [Line Items] |
Schedule of Held-to-maturity Securities |
March 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |
($ in thousands) |  | Amortized Cost |  | Net Unrealized Gains (Losses) |  | Carrying Value |  | Unrecognized Holding Gains |  | Unrecognized Holding Losses |  | Fair Value
Foreign government |  | $ | 5,292 |  |  | 25 |  |  | 5,317 |  |  | 21 |  |  | — |  |  | 5,338 |
Obligations of states and political subdivisions |  | 264,788 |  |  | 1,706 |  |  | 266,494 |  |  | 10,536 |  |  | — |  |  | 277,030 |
Corporate securities |  | 18,532 |  |  | (269 | ) |  | 18,263 |  |  | 2,936 |  |  | — |  |  | 21,199 |
Asset-backed securities (“ABS”) |  | 2,483 |  |  | (378 | ) |  | 2,105 |  |  | 375 |  |  | — |  |  | 2,480 |
Commercial mortgage-backed securities (“CMBS”) |  | 4,764 |  |  | (386 | ) |  | 4,378 |  |  | 668 |  |  | — |  |  | 5,046 |
Total HTM fixed income securities |  | $ | 295,859 |  |  | 698 |  |  | 296,557 |  |  | 14,536 |  |  | — |  |  | 311,093 |
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 |
March 31, 2015 |  |  |  |  |  |  |  |
($ in thousands) |  | Cost/ Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
U.S. government and government agencies |  | $ | 112,146 |  |  | 7,342 |  |  | (2 | ) |  | 119,486 |
Foreign government |  | 27,030 |  |  | 885 |  |  | — |  |  | 27,915 |
Obligations of states and political subdivisions |  | 1,254,037 |  |  | 40,872 |  |  | (534 | ) |  | 1,294,375 |
Corporate securities |  | 1,770,747 |  |  | 55,057 |  |  | (1,539 | ) |  | 1,824,265 |
ABS |  | 184,278 |  |  | 1,214 |  |  | (105 | ) |  | 185,387 |
CMBS 1 |  | 197,304 |  |  | 3,335 |  |  | (128 | ) |  | 200,511 |
Residential mortgage-backed securities (“RMBS”)2 |  | 513,492 |  |  | 9,991 |  |  | (1,180 | ) |  | 522,303 |
AFS fixed income securities |  | 4,059,034 |  |  | 118,696 |  |  | (3,488 | ) |  | 4,174,242 |
AFS equity securities |  | 199,617 |  |  | 15,223 |  |  | (3,269 | ) |  | 211,571 |
Total AFS securities |  | $ | 4,258,651 |  |  | 133,919 |  |  | (6,757 | ) |  | 4,385,813 |
December 31, 2014 |  |  |  |  |  |  |  |
($ in thousands) |  | Cost/ Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
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 |
AFS fixed income securities |  | 3,975,786 |  |  | 100,578 |  |  | (10,242 | ) |  | 4,066,122 |
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 $12.9 million at March 31, 2015 and $13.2 million at December 31, 2014. 2 RMBS includes government guaranteed agency securities with a fair value of $29.2 million at March 31, 2015 and $32.4 million at December 31, 2014.
Schedule of Fair Value and Gross Pre-Tax Net Unrealized/Unrecognized Loss of Securities by Length of Time |
March 31, 2015 |  | Less than 12 months |  | 12 months or longer
($ in thousands) |  | Fair Value |  | Unrealized Losses 1 |  | Fair Value |  | Unrealized Losses 1
AFS securities |  |  |  |  |  |  |  |  |  |  |  |
U.S. government and government agencies |  | $ | — |  |  | — |  |  | 398 |  |  | (2 | )
Obligations of states and political subdivisions |  | 75,935 |  |  | (534 | ) |  | — |  |  | — |
Corporate securities |  | 93,912 |  |  | (821 | ) |  | 50,858 |  |  | (718 | )
ABS |  | 25,684 |  |  | (16 | ) |  | 14,353 |  |  | (89 | )
CMBS |  | 24,664 |  |  | (55 | ) |  | 15,682 |  |  | (73 | )
RMBS |  | 50,977 |  |  | (189 | ) |  | 75,521 |  |  | (991 | )
Total fixed income securities |  | 271,172 |  |  | (1,615 | ) |  | 156,812 |  |  | (1,873 | )
Equity securities |  | 100,209 |  |  | (3,269 | ) |  | — |  |  | — |
Subtotal |  | $ | 371,381 |  |  | (4,884 | ) |  | 156,812 |  |  | (1,873 | )
|  | 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 |  | 197 |  |  | (2 | ) |  | 1 |  |  | — |  |  | — |  |  | — |
ABS |  | — |  |  | — |  |  | — |  |  | 2,003 |  |  | (379 | ) |  | 361 |
Subtotal |  | $ | 197 |  |  | (2 | ) |  | 1 |  |  | 2,003 |  |  | (379 | ) |  | 361 |
Total AFS and HTM |  | $ | 371,578 |  |  | (4,886 | ) |  | 1 |  |  | 158,815 |  |  | (2,252 | ) |  | 361 |
December 31, 2014 |  | Less than 12 months |  | 12 months or longer
($ in thousands) |  | Fair Value |  | Unrealized Losses 1 |  | Fair Value |  | Unrealized Losses 1
AFS 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 fixed income securities |  | 461,125 |  |  | (2,072 | ) |  | 442,058 |  |  | (8,170 | )
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) |  |
March 31, 2015 |  | December 31, 2014
Number of Issues | % of Market/Book | Unrealized/ Unrecognized Loss |  | Number of Issues | % of Market/Book | Unrealized/ Unrecognized Loss
189 |  | 80% - 99% | $ | 6,776 |  |  | 350 |  | 80% - 99% | $ | 10,596 |
— |  | 60% - 79% | — |  |  | — |  | 60% - 79% | — |
— |  | 40% - 59% | — |  |  | — |  | 40% - 59% | — |
— |  | 20% - 39% | — |  |  | — |  | 20% - 39% | — |
— |  | 0% - 19% | — |  |  | — |  | 0% - 19% | — |
|  |  | $ | 6,776 |  |  |  |  |  | $ | 10,596 |
Schedule Of Other Investment Portfolio By Strategy And Remaining Commitment Amount Associated With Each Strategy |
Other Investments |  | Carrying Value |  | March 31, 2015
($ in thousands) |  | March 31, 2015 |  | December 31, 2014 |  | Remaining Commitment
Alternative Investments |  |  |  |  |  |  |  |  |
Secondary private equity |  | $ | 20,208 |  |  | 21,807 |  |  | 7,040 |
Private equity |  | 17,519 |  |  | 20,126 |  |  | 8,879 |
Energy/power generation |  | 12,393 |  |  | 14,445 |  |  | 21,905 |
Real estate |  | 11,986 |  |  | 11,452 |  |  | 10,016 |
Mezzanine financing |  | 8,363 |  |  | 9,853 |  |  | 13,598 |
Distressed debt |  | 7,569 |  |  | 8,679 |  |  | 2,982 |
Venture capital |  | 6,236 |  |  | 6,606 |  |  | 350 |
Total alternative investments |  | 84,274 |  |  | 92,968 |  |  | 64,770 |
Other securities |  | 10,746 |  |  | 6,235 |  |  | 2,001 |
Total other investments |  | $ | 95,020 |  |  | 99,203 |  |  | 66,771 |
Schedule Of Aggregated Summarized Income Statement Financial Information For Partnerships In Our Alternative Investment Portfolio |
Income Statement Information |  | Quarter ended December 31, |
($ in millions) |  | 2014 |  | 2013 |
Net investment income |  | $ | 77.0 |  |  | 65.1 |  |
Realized gains |  | 160.5 |  |  | 63.3 |  |
Net change in unrealized (depreciation) appreciation |  | (518.0 | ) |  | 505.9 |  |
Net (loss) income |  | $ | (280.5 | ) |  | 634.3 |  |
Selective’s insurance subsidiaries’ other investments (loss) income |  | $ | (3.5 | ) |  | 5.2 |  |
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 |  |  | — |  |  | 25.2 |  |  | 32.9 |
Obligations of states and political subdivisions |  | — |  |  | 5.0 |  |  | — |  |  | 5.0 |
Corporate securities |  | — |  |  | 4.8 |  |  | — |  |  | 4.8 |
ABS |  | — |  |  | 1.0 |  |  | — |  |  | 1.0 |
CMBS |  | 1.7 |  |  | — |  |  | — |  |  | 1.7 |
RMBS |  | 54.6 |  |  | 2.2 |  |  | — |  |  | 56.8 |
Total pledged as collateral |  | $ | 64.0 |  |  | 13.0 |  |  | 25.2 |  |  | 102.2 |
Schedule of Net Investment Income Earned |
|  | Quarter ended March 31, |
($ in thousands) |  | 2015 |  | 2014 |
Fixed income securities |  | $ | 30,967 |  |  | 31,028 |  |
Equity securities |  | 1,792 |  |  | 1,449 |  |
Short-term investments |  | 25 |  |  | 19 |  |
Other investments |  | (3,540 | ) |  | 5,218 |  |
Investment expenses |  | (2,327 | ) |  | (2,180 | ) |
Net investment income earned |  | $ | 26,917 |  |  | 35,534 |  |
Schedule of OTTI By Asset Type |
First Quarter 2015 |  | Gross |  | Included in Other Comprehensive Income ("OCI") |  | Recognized in Earnings
($ in thousands) |  |  |
AFS fixed income securities |  |  |  |  |  |
Corporate securities |  | $ | 1,009 |  |  | — |  |  | 1,009 |
RMBS |  | 1 |  |  | — |  |  | 1 |
Total AFS fixed income securities |  | 1,010 |  |  | — |  |  | 1,010 |
AFS equity securities |  | $ | 1,084 |  |  | — |  |  | 1,084 |
OTTI losses |  | $ | 2,094 |  |  | — |  |  | 2,094 |
First Quarter 2014 |  | Gross |  | Included in OCI |  | Recognized in Earnings
($ in thousands) |  |  |
AFS securities |  |  |  |  |  |  |  |  |
Equity securities |  | $ | 963 |  |  | — |  |  | 963 |
OTTI losses |  | $ | 963 |  |  | — |  |  | 963 |
Schedule of Gross Credit Loss Impairments on Fixed Maturity Securities for Which a Portion of the OTTI Charge was Recognized in OCI |
|  | Quarter ended March 31,
($ 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 | ) |  | — |
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 |  |  | 7,488 |
Schedule of Components of Net Realized Gains Excluding OTTI Charges |
|  | Quarter ended March 31,
($ in thousands) |  | 2015 |  | 2014
HTM fixed income securities |  |  |  |
Gains |  | $ | — |  |  | — |
Losses |  | (1 | ) |  | (11 | )
AFS fixed income securities |  |  |  |  |  |
Gains |  | 1,502 |  |  | 158 |
Losses |  | (112 | ) |  | (112 | )
AFS equity securities |  |  |  |  |  |
Gains |  | 21,318 |  |  | 8,317 |
Losses |  | (1,076 | ) |  | (171 | )
Other investments |  |  |  |
Gains |  | — |  |  | — |
Losses |  | (654 | ) |  | — |
Total net realized gains (excluding OTTI charges) |  | $ | 20,977 |  |  | 8,181 |
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 |  | $ | 124,997 |  |  | 126,670 |
Due after one year through five years |  | 160,671 |  |  | 171,337 |
Due after five years through 10 years |  | 10,889 |  |  | 13,086 |
Total HTM fixed income securities |  | $ | 296,557 |  |  | 311,093 |
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 |  | $ | 416,983 |
Due after one year through five years |  | 2,067,679 |
Due after five years through 10 years |  | 1,605,398 |
Due after 10 years |  | 84,182 |
Total AFS fixed income securities |  | $ | 4,174,242 |

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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- Definition Tabular disclosure of financial instruments held by the entity for its own account for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. Description may include equity, fixed income, debt or other securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=55761124&loc=SL6224234-111729 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728 + Details
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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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