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Exhibit A
JOINT FILING UNDERTAKING
The undersigned, being duly authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule jointly on behalf of each such party.
Dated: October 9, 2012
| RICHARD C. BLUM & ASSOCIATES, INC. | BLUM CAPITAL PARTNERS, L.P. | |||||||
| By: | Richard C. Blum & Associates, Inc. | |||||||
| its General Partner | ||||||||
| By: | /s/ Gwen G. Reinke | By: | /s/ Gwen G. Reinke | |||||
| Gwen G. Reinke | Gwen G. Reinke | |||||||
| Partner, General Counsel & Chief Compliance Officer | Partner, General Counsel & Chief Compliance Officer | |||||||
| BLUM STRATEGIC GP IV, L.L.C. | BLUM STRATEGIC GP IV, L.P. | |||||||
| By: | Blum Strategic GP IV, L.L.C. | |||||||
| its General Partner | ||||||||
| By: | /s/ Gwen G. Reinke | By: | /s/ Gwen G. Reinke | |||||
| Gwen G. Reinke | Gwen G. Reinke | |||||||
| Member | Member | |||||||
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