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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

X

- 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.

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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.

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Tabular disclosure of accumulated benefit obligations of pension plans and/or other employee benefit plans.

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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.

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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.

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Represents disclosure of information regarding the other investment portfolio, including carrying value and remaining commitments, broken out by strategy.

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Tabular disclosure regarding the terms and revisions of the Retirement Savings Plan

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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).

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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



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-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.



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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

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-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.



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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.

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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.

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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.

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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.

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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.

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