|                                           |                         |                        |        |        |         |        |         |        |         |        |         |        |   |        |        |   |        |        |
|-------------------------------------------|-------------------------|------------------------|--------|--------|---------|--------|---------|--------|---------|--------|---------|--------|---|--------|--------|---|--------|--------|
|                                      | Nine Months Ended       | Year Ended December 31 |
| (dollars in thousands)                    | September 30, 2010 | 2009                   | 2008   | 2007   | 2006    | 2005   |
| Excluding Interest on Deposits:           |                    |                   |   |   |    |   |
| Income (loss) before income taxes         | $                       | 13,397                 |   | $      | (12,407 | )      | $       | 8,697  |    | $      | 26,414  |   | $ | 28,077 |   | $ | 28,806 |   |
| Fixed charges:                            |                    |                   |   |   |    |   |
| Interest expense                          | 4,556                   |                   | 7,088  |   | 9,910   |   | 13,672  |   | 9,170   |   | 9,101   |   |
| 1/3 of net rent expense                   | 381                     |                   | 571    |   | 435     |   | 455     |   | 379     |   | 295     |   |
| Total fixed charges                       | 4,937                   |                   | 7,659  |   | 10,345  |   | 14,127  |   | 9,549   |   | 9,396   |   |
| Preferred dividend requirement            | 1,350                   |                   | 1,800  |   | — |   | — |   | — |   | — |   |
| Fixed charges and preferred dividends     | $                       | 6,287                  |   | $      | 9,459   |   | $       | 10,345 |    | $      | 14,127  |   | $ | 9,549  |   | $ | 9,396  |   |
| Earnings (loss)                           | $                       | 18,334                 |   | $      | (4,748  | )      | $       | 19,042 |    | $      | 40,541  |   | $ | 37,626 |   | $ | 38,202 |   |
| Ratio of earnings (loss) to fixed charges | 3.71                    |                   | (0.62  | )      | 1.84    |   | 2.87    |   | 3.94    |   | 4.07    |   |
| Ratio of earnings (loss) to fixed charges |                    |                   |   |   |    |   |
| and preferred dividends                   | 2.92                    |                   | (0.50  | )      | 1.84    |   | 2.87    |   | 3.94    |   | 4.07    |   |
|                                      |                    |                   |   |   |    |   |
| Including Interest on Deposits:           |                    |                   |   |   |    |   |
| Income (loss) before income taxes         | $                       | 13,397                 |   | $      | (12,407 | )      | $       | 8,697  |    | $      | 26,414  |   | $ | 28,077 |   | $ | 28,806 |   |
| Fixed charges:                            |                    |                   |   |   |    |   |
| Interest expense                          | 15,603                  |                   | 26,636 |   | 31,431  |   | 43,823  |   | 40,639  |   | 25,042  |   |
| 1/3 of net rent expense                   | 381                     |                   | 571    |   | 435     |   | 455     |   | 379     |   | 295     |   |
| Total fixed charges                       | 15,984                  |                   | 27,207 |   | 31,866  |   | 44,278  |   | 41,018  |   | 25,337  |   |
| Preferred dividend requirement            | 1,350                   |                   | 1,800  |   | — |   | — |   | — |   | — |   |
| Fixed charges and preferred dividends     | $                       | 17,334                 |   | $      | 29,007  |   | $       | 31,866 |    | $      | 44,278  |   | $ | 41,018 |   | $ | 25,337 |   |
| Earnings                                  | $                       | 29,381                 |   | $      | 14,800  |   | $       | 40,563 |    | $      | 70,692  |   | $ | 69,095 |   | $ | 54,143 |   |
| Ratio of earnings to fixed charges        | 1.84                    |                   | 0.54   |   | 1.27    |   | 1.60    |   | 1.68    |   | 2.14    |   |
| Ratio of earnings to fixed charges        |                    |                   |   |   |    |   |
| and preferred dividends                   | 1.69                    |                   | 0.51   |   | 1.27    |   | 1.60    |   | 1.68    |   | 2.14    |   |