EXHIBIT A

JOINT FILING UNDERTAKING

The undersigned, being authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13G to evidence the agreement of the below-named parties, in accordance with rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule, as it may be amended, jointly on behalf of each of such parties.

Dated: December 8, 2020

TOPLINE CAPITAL MANAGEMENT, LLC
By:	/s/ Collin McBirney
	Collin McBirney Managing Member

TOPLINE CAPITAL PARTNERS, LP
By:	Topline Capital Management, LLC, its general partner
By:	/s/ Collin McBirney
	Collin McBirney Managing Member
COLLIN MCBIRNEY
/s/ Collin McBirney