Exhibit A JOINT FILING UNDERTAKING

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 10, 2011.

	Boston Avenue Capital LLC
	By:	/s/ Xxxxxxx X. Xxxxxxx
	Xxxxxxx X. Xxxxxxx, Managing Director
	/s/ Xxxxxxx X. Xxxxxxx
	Xxxxxxx X. Xxxxxxx
	/s/ Xxxxxxx X. Xxxxxx
	Xxxxxxx X. Xxxxxx
	/s/ Xxxxx X. Xxxxxxx
	Xxxxx X. Xxxxxxx
	Xxxxxxx Capital Fund, LLC

By its manager, Xxxxxxx Capital Management, LLC

	By:	/s/ Xxxxxxx X. Xxxxxx Xxxxx
	Xxxxxxx X. Xxxxxx Xxxxx, Managing Member
	Xxxxxxx Capital Management, LLC
	By:	/s/ Xxxxxxx X. Xxxxxx Xxxxx
	Xxxxxxx X. Xxxxxx Xxxxx, Managing Member
	/s/ Xxxxxxx X. Xxxxxx Xxxxx
	Xxxxxxx X. Xxxxxx Xxxxx,
	T2 Accredited Fund, LP
	By:	/s/ Xxxxx Xxxxxx
	Xxxxx Xxxxxx, Principal
	T2 Qualified Fund, L P
	By:	/s/ Xxxxx Xxxxxx
	Xxxxx Xxxxxx, Principal
	Xxxxxx Offshore Fund, Ltd.
	By:	/s/ Xxxxx Xxxxxx
	Xxxxx Xxxxxx, Principal

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	Xxxxxx Focus Fund
	By:	/s/ Xxxxx Xxxxxx
	Xxxxx Xxxxxx, Principal
	/s/ Xxxxx Xxxxxx
	Xxxxx Xxxxxx
	/s/ Xxxxxxx Xxxxxx
	Xxxxxxx Xxxxxx
	Prescott Group Capital Management, L.L.C.
	By:	/s/ Xxxx Xxxxxxxx
	Xxxx Xxxxxxxx, Managing Member
	Prescott Group Aggressive Small Cap, L.P.
	By:	Prescott Group Capital Management, L.L.C.,
	its general partner
	By:	/s/ Xxxx Xxxxxxxx
	Xxxx Xxxxxxxx, Managing Member
	Prescott Group Aggressive Small Cap II, L.P.
	By:	Prescott Group Capital Management, L.L.C.,
	its general partner
	By:	/s/ Xxxx Xxxxxxxx
	Xxxx Xxxxxxxx, Managing Member
	/s/ Xxxx Xxxxxxxx
	Xxxx Xxxxxxxx

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