Remaining unvested shares vesting in the indicated year.

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- Definition

Year of grant for service based stock awards issued to directors and employees.

+ Details

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- Definition

The number of shares originally issued under a share based award plan pertaining to grants outstanding during the period on other than stock option plans (for example, phantom stock plan, stock appreciation rights plan, performance target plan).

+ Details

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- Definition

The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

+ References

+ Details

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Compensation Programs (Schedule Of Performance-Based Stock Award) (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Date Fair Value Per Share	$ 13.23
Total Original Grants	0	0	30,000
Final Measurement Period Ends December 31	July 1, 2014
Remaining Shares Vesting in Period	77,164
2008 [Member] \| Performance-Based Stock Awards [Member] \| Remaining Shares With Initial Measurement Period 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining Shares Vesting in Period	67,597
2008 [Member] \| Performance-Based Stock Awards [Member] \| Remaining Shares With Initial Measurement Period 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining Shares Vesting in Period	67,597
2009 [Member] \| Performance-Based Stock Awards [Member] \| Remaining Shares With Initial Measurement Period 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining Shares Vesting in Period	55,043
2009 [Member] \| Performance-Based Stock Awards [Member] \| Remaining Shares With Initial Measurement Period 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining Shares Vesting in Period	55,035
2010 [Member] \| Performance-Based Stock Awards [Member] \| Remaining Shares With Initial Measurement Period 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining Shares Vesting in Period	64,087
2010 [Member] \| Performance-Based Stock Awards [Member] \| Remaining Shares With Initial Measurement Period 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining Shares Vesting in Period	64,077
2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Original Grants	225,000
2008 [Member] \| Performance-Based Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Year of Grant	2008
Grant Date Fair Value Per Share	$ 10.18
Total Original Grants	140,658
Final Measurement Period Ends December 31	2015
2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Original Grants	225,000
2009 [Member] \| Performance-Based Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Year of Grant	2009
Grant Date Fair Value Per Share	$ 14.33
Total Original Grants	110,917
Final Measurement Period Ends December 31	2016
2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Original Grants	60,000
2010 [Member] \| Performance-Based Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Year of Grant	2010
Grant Date Fair Value Per Share	$ 12.44
Total Original Grants	128,766
Final Measurement Period Ends December 31	2017