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Subsequent Event (Details) (Subsequent Event [Member]) | 12 Months Ended
--- | ---
Dec. 31, 2012
Warrant [Member] |
Subsequent Event [Line Items] |
Treasury stock (in shares) | 500,000
Cumulative Perpetual Preferred Stock, Series A [Member] |
Subsequent Event [Line Items] |
Cumulative Perpetual Preferred Stock, Series A sold by treasury (in shares) | 28,000
Preferred shares accrue rate (in hundredths) | 5.00%
Number of initial years for which a specified dividend rate is used | 5 years
Preferred shares accrue rate after five years (in hundredths) | 9.00%
Preferred shares redeemable at option (in hundredths) | 100.00%

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- Definition The percentage redemption (or callable) amount of redeemable preferred stock, excluding currently redeemable preferred stock. Includes amounts representing dividends not declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer. + References No definition available. + Details
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- Definition Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding. + References Reference 1: 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-Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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- Definition Number of shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section B -Paragraph 7, 11A -Chapter 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. + Details
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