| **Net Income Per Share (Tables)** | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
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| **Earnings Per Share [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Net Income Per Share              | The following table reconciles basic and diluted net income per share for the three months ended June 30, 2013 and 2012. Three Months Ended June 30, 20132012 Net IncomeWeighted-Average SharesPer ShareAmountNet IncomeWeighted-Average SharesPer ShareAmountBasic net income per share:$10,815  $9,205  Less: Preferred Stock dividends and discount accretion(852)  (1,135)  Net income available to common stockholders9,96328,783,407$0.358,07028,624,609$0.28Effect of dilutive stock options and warrants240,106 190,410 Diluted net income per share:      Net income available to common stockholders$9,96329,023,513$0.34$8,07028,815,019$0.28The following table reconciles basic and diluted net income per share for the six months ended June 30, 2013 and 2012 . Six Months Ended June 30, 20132012 Net IncomeWeighted-Average SharesPer ShareAmountNet IncomeWeighted-Average SharesPer ShareAmountBasic net income per share:$22,680  $23,576  Less: Preferred Stock dividends and discount accretion(1,709)  (2,270)  Net income available to common stockholders20,97128,750,197$0.7321,30628,603,612$0.74Effect of dilutive stock options and warrants246,577 178,430 Diluted net income per share:      Net income available to common stockholders$20,97128,996,774$0.72$21,30628,782,042$0.74 |

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| - Definition
Tabular disclosure of an entity's basic and diluted earnings per share calculations.
+ References
No definition available.
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