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Preferred Stock (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended
	Aug. 11, 2011	Mar. 31, 2013	Dec. 31, 2012
Temporary Equity [Line Items]
Number of shares of fixed rate cumulative perpetual preferred stock series D		21,000	21,000
Aggregate purchase price of fixed rate cumulative perpetual preferred stock	$ 21,000	$ 21,000
Percentage of lending incentive fee payable		5.00%
Minimum percentage tier one capital to be maintain		90.00%
Increased percentage of lending incentive fee		1.00%
Noncumulative Series E Preferred Stock [Member]
Temporary Equity [Line Items]
Number of shares of fixed rate cumulative perpetual preferred stock series D	21,000
Annualized Dividend Rate		9.00%
Noncumulative Series E Preferred Stock [Member] | Minimum [Member]
Temporary Equity [Line Items]
Annualized Dividend Rate		1.00%
Noncumulative Series E Preferred Stock [Member] | Maximum [Member]
Temporary Equity [Line Items]
Annualized Dividend Rate		5.00%
Series E Preferred Stock [Member]
Temporary Equity [Line Items]
Redemption price of series E preferred stock		100.00%

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- Definition

Increased percentage of lending incentive fee.

+ References

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- Definition

Minimum percentage tier one capital to be maintain.

+ References

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- Definition

Percentage of lending incentive fee payable.

+ References

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- Definition

Percentage preferred stock redemption.

+ References

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- Definition

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

+ References

No definition available.

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- Definition

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29

-Article 5



Reference 2: 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

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- Definition

Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 19

-Subparagraph a

-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

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-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 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585

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