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Participation In The U.S. Treasury Capital Purchase Program (Details) (USD $) | 12 Months Ended |  | 0 Months Ended | 4 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Series A preferred stock | Dec. 23, 2008 Series A preferred stock | Dec. 23, 2008 Series A preferred stock Cumulative dividends rate | Apr. 25, 2012 Series A preferred stock Revised cumulative dividends rate | May 02, 2012 U.S. Treasury Capital Purchase Program
Participation In The U.S. Treasury Capital Repurchase Program [Line Items] |  |  |  |  |  |  |  |
Preferred stock value | $ 0 | $ 98,146,000 |  |  | $ 100,000,000 |  |  |
Liquidation preference per senior preferred shares | $ 0 | $ 1,000 |  |  | $ 1,000 |  |  |
Preferred stock, dividend rate, percentage |  |  |  |  |  | 5.00% | 9.00% |
Charge to retained earnings representing preferred stock dividend and accretion of discount |  |  |  | 3,400,000 |  |  |  |
Number of securities repurchasable |  |  |  |  |  |  |  | 227,376
Issued warrants as a percentage of senior preferred shares purchased |  |  |  |  |  |  |  | 15.00%
Common share warrants exercise price |  |  |  |  |  |  |  | 65.97
Trailing average |  |  |  |  |  |  |  | 20 days
Term of warrants |  |  |  |  |  |  |  | 10 years
Stock repurchased during period, shares |  |  |  | 100,000 |  |  |  |
Stock repurchased during period, value |  |  |  | 100,000,000 |  |  |  |
Payments for repurchase of preferred stock and preference stock including unpaid dividends |  |  |  | 101,000,000 |  |  |  |
Dividends, preferred stock, cash | 1,571,000 | 5,000,000 | 5,000,000 | 972,000 |  |  |  |
Charge to retained earnings from preferred stock repurchase |  |  |  | 1,600,000 |  |  |  |
Number of warrants repurchased |  |  |  |  |  |  |  | 227,376
Payments for repurchase of warrants |  |  |  |  |  |  |  | $ 2,800,000
Repurchase price per share |  |  |  |  |  |  |  | $ 12.50

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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 6 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 + Details
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