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v2.4.0.8

Preferred and Common Stock (Details) (USD $) | 0 Months Ended | 6 Months Ended | 0 Months Ended | 48 Months Ended |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 28, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | May 08, 2013 Series A Preferred Stock [Member] | Mar. 27, 2013 Series A Preferred Stock [Member] | Aug. 24, 2011 Series A Preferred Stock [Member] | Jan. 09, 2013 Series A Preferred Stock [Member] | Jan. 09, 2009 Series A Preferred Stock [Member] | Jun. 30, 2014 Capital Purchase Program [Member] | Jun. 30, 2013 Capital Purchase Program [Member]
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of CPP Shares |  |  |  |  |  |  | $ 25,000,000 |  |  |
Repurchase price of CPP shares (in dollars per share) |  |  |  |  |  |  |  | $ 1,000 |  |
Cumulative dividend rate of CPP Shares (in hundredths) |  |  |  |  |  |  | 5.00% |  |  |
CPP Shares dividend period (in years) |  |  |  |  |  |  | 5 years |  |  |
CPP Shares dividend rate after first five years (in hundredths) |  |  |  |  |  |  | 9.00% |  |  |
Repurchase of fixed rate perpetual preferred stock, series A |  | 0 | 12,500,000 | 10,000,000 | 2,500,000 | 12,500,000.0 |  |  |  |
Outstanding CPP shares - value | 10,000,000 |  |  |  |  |  |  |  |  |
Number of shares of common stock issuable pursuant to the Warrants, maximum (in shares) |  | 225,904 | 225,904 |  |  |  |  |  |  |
Exercise price of the Warrants (in dollars per share) |  | 16.60 |  |  |  |  |  |  |  |
Assumptions used in determining fair value of warrants, common stock price (in dollars per share) |  | $ 16.60 |  |  |  |  |  |  |  |
Assumptions used in determining fair value of warrants, dividend yield |  | 4.70% |  |  |  |  |  |  |  |
Assumptions used in determining fair value of warrants, stock price volatility |  | 24.43% |  |  |  |  |  |  |  |
Assumptions used in determining fair value of warrants, risk-free interest rate |  | 2.01% |  |  |  |  |  |  |  |
Expected life of CPP Shares upon issuance |  | 5 years |  |  |  |  |  |  |  |
Proceeds from sale of common stock (in shares) | 760,771 |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock | 11,548,000 | 224,000 | 11,751,000 |  |  |  |  |  |  |
Issuance of common stock for plans |  | $ 224,000 | $ 11,751,000 |  |  |  |  |  | $ 224,000 | $ 203,000

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