|                                              |
|----------------------------------------------|
|                                              |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|                                         | Three Months Ended |   | Year Ended December 31 |
| (dollars in thousands)                       | March 31, 2011 |   | 2010 |   | 2009 |   | 2008 |   | 2007 |   | 2006 |
| Excluding Interest on Deposits:              |   |   |   |   |   |   |   |   |   |   |   |
| Fixed charges:                               |   |   |   |   |   |   |   |   |   |   |   |
| Interest expense                             | $ | 1,230 |   |   | $ | 5,806 |   |   | $ | 7,088 |   |   | $ | 9,910 |   |   | $ | 13,672 |   |   | $ | 9,170 |   |
| 1/3 of net rent expense                      | 123 |   |   | 505 |   |   | 571 |   |   | 435 |   |   | 455 |   |   | 379 |   |
| Total fixed charges                          | 1,353 |   |   | 6,311 |   |   | 7,659 |   |   | 10,345 |   |   | 14,127 |   |   | 9,549 |   |
| Preferred dividend requirement               | 450 |   |   | 1,800 |   |   | 1,800 |   |   | — |   |   | — |   |   | — |   |
| Fixed charges and preferred dividends        | $ | 1,803 |   |   | $ | 8,111 |   |   | $ | 9,459 |   |   | $ | 10,345 |   |   | $ | 14,127 |   |   | $ | 9,549 |   |
|                                         |   |   |   |   |   |   |   |   |   |   |   |
| Income (loss) before income taxes            | $ | 6,172 |   |   | $ | 18,713 |   |   | $ | (12,407 | ) |   | $ | 8,697 |   |   | $ | 26,414 |   |   | $ | 28,077 |   |
| Total fixed charges                          | 1,353 |   |   | 6,311 |   |   | 7,659 |   |   | 10,345 |   |   | 14,127 |   |   | 9,549 |   |
| Earnings (loss) before income taxes          |   |   |   |   |   |   |   |   |   |   |   |
| and fixed charges                            | $ | 7,525 |   |   | $ | 25,024 |   |   | $ | (4,748 | ) |   | $ | 19,042 |   |   | $ | 40,541 |   |   | $ | 37,626 |   |
|                                         |   |   |   |   |   |   |   |   |   |   |   |
| Ratio of earnings (loss) before income taxes |   |   |   |   |   |   |   |   |   |   |   |
| and fixed charges to fixed charges           | 5.56 |   |   | 3.97 |   |   | (0.62 | ) |   | 1.84 |   |   | 2.87 |   |   | 3.94 |   |
| Ratio of earnings (loss) before income taxes |   |   |   |   |   |   |   |   |   |   |   |
| and fixed charges to fixed charges and       |   |   |   |   |   |   |   |   |   |   |   |
| preferred dividends                          | 4.17 |   |   | 3.09 |   |   | (0.50 | ) |   | 1.84 |   |   | 2.87 |   |   | 3.94 |   |
|                                         |   |   |   |   |   |   |   |   |   |   |   |
| Including Interest on Deposits:              |   |   |   |   |   |   |   |   |   |   |   |
| Fixed charges:                               |   |   |   |   |   |   |   |   |   |   |   |
| Interest expense                             | $ | 3,095 |   |   | $ | 19,023 |   |   | $ | 26,636 |   |   | $ | 31,431 |   |   | $ | 43,823 |   |   | $ | 40,639 |   |
| 1/3 of net rent expense                      | 123 |   |   | 505 |   |   | 571 |   |   | 435 |   |   | 455 |   |   | 379 |   |
| Total fixed charges                          | 3,218 |   |   | 19,528 |   |   | 27,207 |   |   | 31,866 |   |   | 44,278 |   |   | 41,018 |   |
| Preferred dividend requirement               | 450 |   |   | 1,800 |   |   | 1,800 |   |   | — |   |   | — |   |   | — |   |
| Fixed charges and preferred dividends        | $ | 3,668 |   |   | $ | 21,328 |   |   | $ | 29,007 |   |   | $ | 31,866 |   |   | $ | 44,278 |   |   | $ | 41,018 |   |
|                                         |   |   |   |   |   |   |   |   |   |   |   |
| Income (loss) before income taxes            | $ | 6,172 |   |   | $ | 18,713 |   |   | $ | (12,407 | ) |   | $ | 8,697 |   |   | $ | 26,414 |   |   | $ | 28,077 |   |
| Total fixed charges                          | 3,218 |   |   | 19,528 |   |   | 27,207 |   |   | 31,866 |   |   | 44,278 |   |   | 41,018 |   |
| Earnings (loss) before income taxes          |   |   |   |   |   |   |   |   |   |   |   |
| and fixed charges                            | $ | 9,390 |   |   | $ | 38,241 |   |   | $ | 14,800 |   |   | $ | 40,563 |   |   | $ | 70,692 |   |   | $ | 69,095 |   |
|                                         |   |   |   |   |   |   |   |   |   |   |   |
| Ratio of earnings (loss) before income taxes |   |   |   |   |   |   |   |   |   |   |   |
| and fixed charges to fixed charges           | 2.92 |   |   | 1.96 |   |   | 0.54 |   |   | 1.27 |   |   | 1.60 |   |   | 1.68 |   |
| Ratio of earnings (loss) before income taxes |   |   |   |   |   |   |   |   |   |   |   |
| and fixed charges to fixed charges and       |   |   |   |   |   |   |   |   |   |   |   |
| preferred dividends                          | 2.56 |   |   | 1.79 |   |   | 0.51 |   |   | 1.27 |   |   | 1.60 |   |   | 1.68 |   |