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Retirement Plans (Table) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010
Schedule Of Plan Terms In Effect And Revisions Of Retirement Savings Plan [Table Text Block] |
| As of December 31, 2010 | Effective January 1, 2011
SICA match | 65% of participant contributions up to 7% of defined compensation | 100% of participant contributions up to the first 3% of defined compensation and 50% up to the next 3%
Enhanced match/non-elective contribution1 | 100% match up to 2% of defined compensation and non-elective contributions equal to 2% of defined compensation | Enhanced match eliminated and non-elective contributions increased to 4%
Vesting of match/non-elective contribution | Vesting period of six years for SICA match and three years for SICA non-elective contribution | Immediately vested
HCE contributions | Limited | No longer subject to previous limitation
Funded Status Of Retirement Income Plan And Retirement Life Plan [Table Text Block] |
December 31, |  | Retirement Income Plan |  | Retirement Life Plan
($ in thousands) |  | 2011 |  | 2010 |  | 2011 |  | 2010
Change in Benefit Obligation: |  |  |  |  |  |  |  |
Benefit obligation, beginning of year | $ | 230,642 |  | 200,041 |  | 5,700 |  | 5,503
Service cost |  | 7,575 |  | 7,626 |  | - |  | -
Interest cost |  | 12,349 |  | 11,914 |  | 306 |  | 316
Actuarial losses |  | 9,177 |  | 16,339 |  | 224 |  | 201
Benefits paid |  | (5,734) |  | (5,278) |  | (333) |  | (320)
Benefit obligation, end of year | $ | 254,009 |  | 230,642 |  | 5,897 |  | 5,700
Change in Fair Value of Assets: |  |  |  |  |  |  |  |
Fair value of assets, beginning of year | $ | 173,311 |  | 139,749 |  | - |  | -
Actual return on plan assets, net of expenses |  | 6,526 |  | 15,743 |  | - |  | -
Contributions by the employer to funded plans |  | 8,400 |  | 23,000 |  | - |  | -
Contributions by the employer to unfunded plans |  | 111 |  | 97 |  | - |  | -
Benefits paid |  | (5,734) |  | (5,278) |  | - |  | -
Fair value of assets, end of year | $ | 182,614 |  | 173,311 |  | - |  | -
Funded status |  | (71,395) |  | (57,331) |  | (5,897) |  | (5,700)
Schedule of Amounts Recognized in Balance Sheet [Table Text Block] |
Amounts Recognized in the Consolidated Balance Sheet: |  |  |  |  |  |  |  |
Liabilities |  | (71,395) |  | (57,331) |  | (5,897) |  | (5,700)
Net pension liability, end of year | $ | (71,395) |  | (57,331) |  | (5,897) |  | (5,700)
Amounts recognized in AOCI |
Amounts Recognized in AOCI |  |  |  |  |  |  |  |
Prior service cost | $ | 176 |  | 326 |  | - |  | -
Net actuarial loss |  | 83,321 |  | 70,901 |  | 1,047 |  | 841
Total | $ | 83,497 |  | 71,227 |  | 1,047 |  | 841
Other Information as of December 31 |
Other Information as of December 31: |  |  |  |  |  |  |  |
Accumulated benefit obligation | $ | 223,655 |  | 199,028 |  | - |  | -
Weighted-Average Liability Assumptions as of December 31 |
Weighted-Average Liability Assumptions as of |  |  |  |  |  |  |  |
December 31: |  |  |  |  |  |  |  |
Discount rate |  | 5.16 | % | 5.55 | % | 5.16 | % | 5.55
Rate of compensation increase |  | 4.00 | % | 4.00 | % | - |  | -
Components Of Net Periodic Benefit Cost And Other Amounts Recognized In Other Comprehensive Income Loss [Table Text Block] |
|  | Retirement Income Plan |  | Retirement Life Plan
($ in thousands) |  | 2011 |  | 2010 |  | 2009 |  | 2011 |  | 2010 |  | 2009
Components of Net Periodic Benefit Cost and |  |  |  |  |  |  |  |  |  |  |  |
Other Amounts Recognized in Other |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive (Income) Loss: |  |  |  |  |  |  |  |  |  |  |  |
Net Periodic Benefit Cost: |  |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | 7,575 |  | 7,626 |  | 7,078 |  | - |  | - |  | 32
Interest cost |  | 12,349 |  | 11,914 |  | 10,944 |  | 306 |  | 316 |  | 361
Expected return on plan assets |  | (13,924) |  | (11,247) |  | (9,214) |  | - |  | - |  | -
Amortization of unrecognized prior service cost (credit) |  | 150 |  | 150 |  | 150 |  | - |  | - |  | (44)
Amortization of unrecognized actuarial loss |  | 4,154 |  | 4,128 |  | 4,660 |  | 18 |  | 6 |  | -
Curtailment income |  | - |  | - |  | - |  | - |  | - |  | (4,217)
Total net periodic cost/(income) |  | 10,304 |  | 12,571 |  | 13,618 |  | 324 |  | 322 |  | (3,868)
Other Changes in Plan Assets and Benefit |  |  |  |  |  |  |  |  |  |  |  |
Obligations Recognized in Other Comprehensive |  |  |  |  |  |  |  |  |  |  |  |
(Income) Loss: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) | $ | 16,575 |  | 11,844 |  | (3,470) |  | 224 |  | 201 |  | 646
Reversal of amortization of net actuarial loss |  | (4,154) |  | (4,128) |  | (4,660) |  | (18) |  | (6) |  | (614)
Reversal of amortization of prior service (cost) credit |  | (150) |  | (150) |  | (150) |  | - |  | - |  | 2,045
Total recognized in other comprehensive (income) loss |  | 12,271 |  | 7,566 |  | (8,280) |  | 206 |  | 195 |  | 2,077
Total recognized in net periodic benefit cost and other |  |  |  |  |  |  |  |  |  |  |  |
comprehensive (income) loss | $ | 22,575 |  | 20,137 |  | 5,338 |  | 530 |  | 517 |  | (1,791)
Schedule Of Assumptions Used Expense [Table Text Block] |
|  | Retirement Income Plan |  | Retirement Life Plan
($ in thousands) |  | 2011 |  | 2010 |  | 2009 |  | 2011 |  | 2010 |  | 2009
Weighted-Average Expense Assumptions |  |  |  |  |  |  |  |  |  |  |  |
for the years ended December 31: |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  | 5.55 | % | 5.93 | % | 6.24 |  | 5.55 |  | 5.93 |  | 6.24
Expected return on plan assets |  | 8.00 | % | 8.00 | % | 8.00 |  | - |  | - |  | -
Rate of compensation increase |  | 4.00 | % | 4.00 | % | 4.00 |  | - |  | - |  | 4.00
Schedule of Allocation of Plan Assets [Table Text Block] |
| 2011 |  | 2010 |
| Target |  | Range |  | Actual |  | Actual |
| Percentage |  | Percentage |  | Percentage |  | Percentage |
Equity |  |  |  |  |  |  |  |
Large capitalization | 24 |  | 17 - 31 |  | 18 |  | 19 |
Small and mid capitalization | 10 |  | 6 - 14 |  | 8 |  | 9 |
International | 10 |  | 6 - 14 |  | 7 |  | 8 |
Alternative investments | 15 |  | 20 - 34 |  | 9 |  | 11 |
Fixed income |  |  |  |  |  |  |  |
Domestic core | 16 |  | 0 - 21 |  | 17 |  | 15 |
Global emerging markets | 13 |  | 0 - 18 |  | 14 |  | 12 |
Liability driven investments | 12 |  | 0- 45 |  | 20 |  | 16 |
Cash and short-term investments | 0 |  | 0- 5 |  | 7 |  | 10 |
Total |  |  |  |  | 100 |  | 100 |
Fair Value, Assets Measured on Recurring Basis [Text Block] |
December 31, 2011 |  |  |  | Fair Value Measurements Using
|  |  |  | Quoted Prices in |  |  |  |
|  | Assets |  | Active Markets for |  | Significant Other |  | Significant
|  | Measured at |  | Identical Assets/ |  | Observable |  | Unobservable
|  | Fair Value |  | Liabilities |  | Inputs |  | Inputs
($ in thousands) |  | at 12/31/11 |  | (Level 1) |  | (Level 2) |  | (Level 3)
Description |  |  |  |  |  |  |  |
Measured on a recurring basis: |  |  |  |  |  |  |  |
U.S. government and government agencies1 | $ | 353,796 |  | 126,475 |  | 205,580 |  | 21,741
Foreign government |  | 34,173 |  | - |  | 34,173 |  | -
Obligations of states and political subdivisions |  | 622,659 |  | - |  | 622,659 |  | -
Corporate securities |  | 1,213,310 |  | - |  | 1,210,707 |  | 2,603
ABS |  | 78,949 |  | - |  | 78,949 |  | -
CMBS |  | 112,598 |  | - |  | 112,244 |  | 354
RMBS |  | 481,888 |  | - |  | 481,888 |  | -
Total AFS fixed maturity securities |  | 2,897,373 |  | 126,475 |  | 2,746,200 |  | 24,698
Equity securities |  | 157,355 |  | 157,355 |  | - |  | -
Short-term investments |  | 217,044 |  | 217,044 |  | - |  | -
Receivable for proceeds related to sale of Selective HR |  | 3,212 |  | - |  | - |  | 3,212
Total assets | $ | 3,274,984 |  | 500,874 |  | 2,746,200 |  | 27,910
December 31, 2010 |  |  |  | Fair Value Measurements Using
|  |  |  | Quoted Prices in |  |  |  |
|  | Assets |  | Active Markets for |  | Significant Other |  | Significant
|  | Measured at |  | Identical Assets/ |  | Observable |  | Unobservable
|  | Fair Value |  | Liabilities |  | Inputs |  | Inputs
($ in thousands) |  | at 12/31/10 |  | (Level 1) |  | (Level 2) |  | (Level 3)
Description |  |  |  |  |  |  |  |
Measured on a recurring basis: |  |  |  |  |  |  |  |
U.S. government and government agencies1 | $ | 320,529 |  | 105,317 |  | 215,212 |  | -
Foreign government |  | 18,966 |  | - |  | 18,966 |  | -
Obligations of states and political subdivisions |  | 533,897 |  | - |  | 533,897 |  | -
Corporate securities |  | 993,725 |  | - |  | 993,725 |  | -
ABS |  | 48,733 |  | - |  | 48,733 |  | -
CMBS |  | 104,475 |  | - |  | 104,290 |  | 185
RMBS |  | 322,417 |  | - |  | 322,417 |  | -
Total AFS fixed maturity securities |  | 2,342,742 |  | 105,317 |  | 2,237,240 |  | 185
Equity securities |  | 69,636 |  | 69,636 |  | - |  | -
Short-term investments |  | 161,155 |  | 161,155 |  | - |  | -
Receivable for proceeds related to sale of Selective HR |  | 5,002 |  | - |  | - |  | 5,002
Total assets | $ | 2,578,535 |  | 336,108 |  | 2,237,240 |  | 5,187
1 U.S. government includes corporate securities fully guaranteed by the FDIC. |
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block] |
December 31, 2011 |  | Investments in
($ in thousands) |  | Limited Partnerships
Fair value, December 31, 2010 | $ | 17,179
Total gains (realized and unrealized) |  |
included in changes in net assets |  | 1,949
Purchases, sales, issuances, and settlements (net) |  | (3,948)
Transfers in and/or out of Level 3 |  | -
Fair value, December 31, 2011 | $ | 15,180
December 31, 2010 |  | Investments in
($ in thousands) |  | Limited Partnerships
Fair value, December 31, 2009 | $ | 18,764
Total gains (realized and unrealized) |  |
included in changes in net assets |  | 969
Purchases, sales, issuances, and settlements (net) |  | (2,554)
Transfers in and/or out of Level 3 |  | -
Fair value, December 31, 2010 | $ | 17,179
Schedule of Expected Benefit Payments [Table Text Block] |
($ in thousands) |  | Retirement Income Plan |  | Retirement Life Plan
Benefits Expected to be Paid in Future |  |  |  |
Fiscal Years: |  |  |  |
2012 | $ | 7,291 |  | 342
2013 |  | 8,038 |  | 352
2014 |  | 8,740 |  | 360
2015 |  | 9,514 |  | 369
2016 |  | 10,467 |  | 377
2017-2021 |  | 69,022 |  | 1,980
Retirement Income Plan [Member] |  |
Fair Value, Assets Measured on Recurring Basis [Text Block] |
December 31, 2011 |  |  |  | Fair Value Measurements at 12/31/11 Using
|  |  |  | Quoted Prices in |  |  |  |
|  | Assets |  | Active Markets for |  | Significant Other |  | Significant
|  | Measured at |  | Identical Assets/ |  | Observable |  | Unobservable
|  | Fair Value |  | Liabilities |  | Inputs |  | Inputs
($ in thousands) |  | At 12/31/11 |  | (Level 1) |  | (Level 2) |  | (Level 3)
Description |  |  |  |  |  |  |  |
Mutual funds: |  |  |  |  |  |  |  |
International equity | $ | 13,205 |  | 13,205 |  | - |  | -
Domestic large capitalization |  | 22,200 |  | 22,200 |  | - |  | -
Small and mid capitalization |  | 6,750 |  | 6,750 |  | - |  | -
Global long-term investment grade fixed income |  | 36,881 |  | 36,881 |  | - |  | -
Domestic core fixed income |  | 32,930 |  | 32,930 |  | - |  | -
Global emerging markets fixed income |  | 25,644 |  | 25,644 |  | - |  | -
Total mutual funds |  | 137,610 |  | 137,610 |  | - |  | -
Limited partnership investments: |  |  |  |  |  |  |  |
Equity long/short hedge |  | 1,836 |  | - |  | 1,836 |  | -
Private equity |  | 12,586 |  | - |  | - |  | 12,586
Real estate |  | 2,594 |  | - |  | - |  | 2,594
Total limited partnerships |  | 17,016 |  | - |  | 1,836 |  | 15,180
Common stocks: |  |  |  |  |  |  |  |
Domestic large capitalization |  | 11,618 |  | 11,618 |  | - |  | -
Small and mid capitalization |  | 8,326 |  | 8,326 |  | - |  | -
Total common stocks |  | 19,944 |  | 19,944 |  | - |  | -
Short-term investments |  | 7,225 |  | 7,225 |  | - |  | -
Deposit administration contracts |  | 979 |  | - |  | 979 |  | -
Total assets | $ | 182,774 |  | 164,779 |  | 2,815 |  | 15,180
Schedule Of Other Investment Portfolio By Strategy And Remaining Commitment Amount Associated With Each Strategy [Table Text Block] |
Alternative Investments |  | Carrying Value |  | 2011
|  | December 31, |  | December 31, |  | Remaining
($ in millions) |  | 2011 |  | 2010 |  | Amount
Equity long/short hedge | $ | 1.8 |  | 1.8 |  | -
Private equity |  | 12.6 |  | 14.5 |  | 4.2
Real estate |  | 2.6 |  | 2.7 |  | 0.6
Total alternative investments | $ | 17.0 |  | 19.0 |  | 4.8

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References No definition available. + Details
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- Definition Tabular disclosure of the change in the benefit obligation of pension plans and/or other employee benefit plans from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. Tabular disclosure of the reconciliation of beginning and ending balances of the fair value of plan assets of pension plans and/or other employee benefit plans showing separately, if applicable, the effects during the period attributable to each of the following: actual return on plan assets, contributions by the employer, contributions by plan participants, benefits paid, business combinations, divestitures, and settlements. Tabular disclosure of net funded status of pension plans and/or other employee benefit plans. + References No definition available. + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References No definition available. + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation, including assumed discount rates and rate increase in compensation increase. + References No definition available. + Details
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- Definition Represents disclosure of information regarding the other investment portfolio, including carrying value and remaining commitments, broken out by strategy. + References No definition available. + Details
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- Definition Tabular disclosure regarding the terms and revisions of the Retirement Savings Plan + References No definition available. + Details
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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring and/or nonrecurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19190-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (d)(5) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Subparagraph (c) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the effect of fair value measurements using significant unobservable inputs (Level 3) on changes in plan assets of pension plans and/or other employee benefit plans for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (d)(4) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (f) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (j) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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