Noncontrolling Interests (Preferred Stockholders' Equity in Subsidiaries) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended	9 Months Ended
Dec. 31, 2011	Sep. 30, 2012	Sep. 30, 2012 Redeemable Preferred Stock Member	Sep. 30, 2012 Redeemable Preferred Stock Member
Noncontrolling Interest [Line Items]
Shares, Outstanding			300,000	300,000
Preferred Stock, Value, Issued	$ 4	$ 4	$ 300,000	$ 300,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		25.00%
Noncontrolling Interest, Ownership Percentage by Parent		75.00%
Preferred Stock, Dividend Rate, Percentage	4.00%	4.00%	6.125%
Preferred stock-perpetual voting, cumulative dividend period				4 years
Preferred stock-perpetual voting, dividend increase percentage each interval once shares become callable			50.00%
Preferred stock-perpetual voting, dividend increase interval once shares become callable				6 months

Preferred Stock, Cumulative Dividend Increase Interval if Outstanding Once Callable

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- Definition

Preferred Stock, Cumulative Dividend Period

+ References

No definition available.

+ Details

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- Definition

Preferred Stock, Dividend Rate, Increase if Outstanding Once Callable

+ References

No definition available.

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- Details

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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- Definition

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 3, 4, 5, 6, 7, 8

-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 Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-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 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 02

-Paragraph 29

+ Details

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- Definition

Number of shares issued and outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

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