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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 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 + Details
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