| The following presents the computation of per share earnings reflecting the assumption that dilutive stock options are exercised. |   |
|-----------------------------------------------------------------------------------------------------------------------------------|--------|
|                                                                                                                              |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   | (IN THOUSANDS |   |
|                                                                                                                              |   | EXCEPT PER SHARE DATA) |   |
|                                                                                                                              |   | 2010 |   |   | 2009 |   |   | 2008 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |
| Net earnings (1)                                                                                                                  |   | $ | 63,531 |   |   | $ | 62,576 |   |   | $ | 44,183 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
| Weighted average common shares outstanding (2)                                                                                    |   |   | 6,862 |   |   |   | 6,854 |   |   |   | 6,845 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
| Common share equivalents relating to restricted stock                                                                             |   |   | 2 |   |   |   | - |   |   |   | - |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
| Adjusted common and common equivalent                                                                                             |   |   |   |   |   |   |   |   |   |   |   |   |
|    shares for computation (3)                                                                                      |   |   | 6,864 |   |   |   | 6,854 |   |   |   | 6,845 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |
| Net earnings per share:                                                                                                           |   |   |   |   |   |   |   |   |   |   |   |   |
|      Basic (1 / 2)                                                                                       |   | $ | 9.26 |   |   | $ | 9.13 |   |   | $ | 6.45 |   |
|      Diluted (1 / 3)                                                                                     |   | $ | 9.26 |   |   | $ | 9.13 |   |   | $ | 6.45 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |