Exhibit 99.1

Signature Pages

	SRB MANAGEMENT, L.P.
	By:	BC Advisors, LLC, its general partner
Date:  3/10/2010		By:	/s/ Richard J. Birns
			Name: Richard J. Birns
			Title: Attorney-in-Fact
	SRB GREENWAY OPPORTUNITY FUND, (QP), L.P.
	By:	SRB Management, L.P., its general partner
		By:	BC Advisors, LLC, its general partner
Date:  3/10/2010			By:	/s/ Richard J. Birns
				Name: Richard J. Birns
				Title: Attorney-in-Fact
	SRB GREENWAY OPPORTUNITY FUND, L.P.
	By:	SRB Management, L.P., its general partner
		By:	BC Advisors, LLC, its general partner
Date:  3/10/2010			By:	/s/ Richard J. Birns
				Name: Richard J. Birns
				Title: Attorney-in-Fact
	BC ADVISORS, LLC
Date:  3/10/2010	By:	/s/ Richard J. Birns
		Name: Richard J. Birns
		Title: Attorney-in-Fact
	STEVEN R. BECKER
Date:  3/10/2010	By:	/s/ Richard J. Birns
		Name: Richard J. Birns
		Title: Attorney-in-Fact
	MATTHEW A. DRAPKIN
Date:  3/10/2010	By:	/s/ Richard J. Birns
		Name: Richard J. Birns
		Title: Attorney-in-Fact