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: August 18, 2011.
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| | Boston Avenue Capital LLC
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| | By: | /s/ Stephen J. Heyman | |
| | Stephen J. Heyman, Manager | |
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| | /s/ Charles M. Gillman | |
| | Charles M. Gillman | |
| |
| | /s/ Stephen J. Heyman | |
| | Stephen J. Heyman | |
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| | /s/ James F. Adelson | |
| | James F. Adelson | |
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| | Spencer Capital Fund, LLC
By its manager, Spencer Capital Management, LLC
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| | By: | /s/ Kenneth H. Shubin Stein | |
| | Kenneth H. Shubin Stein, Managing Member | |
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| | Spencer Capital Management, LLC
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| | By: | /s/ Kenneth H. Shubin Stein | |
| | Kenneth H. Shubin Stein, Managing Member | |
| |
| | /s/ Kenneth H. Shubin Stein | |
| | Kenneth H. Shubin Stein, | |
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| | T2 Accredited Fund, LP
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| | By: | /s/ Glenn Tongue | |
| | Glenn Tongue, Principal | |
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| | T2 Qualified Fund, L P
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| | By: | /s/ Glenn Tongue | |
| | Glenn Tongue, Principal | |
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| | Tilson Offshore Fund, Ltd.
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| | By: | /s/ Glenn Tongue | |
| | Glenn Tongue, Principal | |
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| | Tilson Focus Fund
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| | By: | /s/ Glenn Tongue | |
| | Glenn Tongue, Principal | |
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| | | |
| | /s/ Glenn Tongue | |
| | Glenn Tongue | |
| |
| | /s/ Whitney Tilson | |
| | Whitney Tilson | |
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| | Prescott Group Capital Management, L.L.C.
| |
| | By: | /s/ Phil Frohlich | |
| | Phil Frohlich, Managing Member | |
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| | Prescott Group Aggressive Small Cap, L.P.
| |
| | By: | Prescott Group Capital Management, L.L.C., | |
| | its general partner | |
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| | By: | /s/ Phil Frohlich | |
| | Phil Frohlich, Managing Member | |
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| | Prescott Group Aggressive Small Cap II, L.P.
| |
| | By: | Prescott Group Capital Management, L.L.C., | |
| | its general partner | |
| |
| | By: | /s/ Phil Frohlich | |
| | Phil Frohlich, Managing Member | |
| |
| | /s/ Phil Frohlich | |
| | Phil Frohlich | |
| |
| | /s/ Richard K. Coleman, Jr. | |
| | Richard K. Coleman | |
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