| DISCOVERY GROUP I, LLC, for itself and as general partner of DISCOVERY EQUITY PARTNERS, L.P. | ||
| By | Michael R. Murphy* | |
| Michael R. Murphy | ||
| Managing Member | ||
| Daniel J. Donoghue* | ||
| Daniel J. Donoghue | ||
| Michael R. Murphy* | ||
| Michael R. Murphy | ||
| *By: | /s/ Mark Buckley | |
| Mark Buckley | ||
| Attorney-in-Fact for Daniel J. Donoghue | ||
| Attorney-in-Fact for Michael R. Murphy | ||
