AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13G

Exhibit A

AGREEMENT REGARDING THE JOINT FILING OF

SCHEDULE 13G

_________________

The undersigned hereby agree as follows:

(i) Each of them is individually eligible to use the Schedule 13G to which this Exhibit is attached, and such Schedule 13G is filed on behalf of each of them; and

(ii) Each of them is responsible for the timely filing of such Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

Dated: April 28, 2014

	XXXXXX X. XXX ADVISORS, LLC
	By	THL Holdco, LLC, its managing member
	By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Managing Director
	THL EQUITY ADVISORS VI, LLC
	By:	Xxxxxx X. Xxx Partners, L.P., its sole member
	By:	Xxxxxx X. Xxx Advisors, LLC, its general partner
	By:	THL Holdco, LLC, its managing member
	By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Managing Director
	XXXXXX X. XXX EQUITY FUND VI, L.P.
	By:	THL Equity Advisors VI, LLC, its general partner
	By:	Xxxxxx X. Xxx Partners, L.P., its sole member
	By:	Xxxxxx X. Xxx Advisors, LLC, its general partner
	By:	THL Holdco, LLC, its managing member
	By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Managing Director
	XXXXXX X. XXX PARALLEL FUND VI, L.P.
	By:	THL Equity Advisors VI, LLC, its general partner
	By:	Xxxxxx X. Xxx Partners, L.P., its sole member
	By:	Xxxxxx X. Xxx Advisors, LLC, its general partner
	By:	THL Holdco, LLC, its managing member
	By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Managing Director

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	XXXXXX X. XXX PARALLEL (DT) FUND VI, L.P.
	By:	THL Equity Advisors VI, LLC, its general partner
	By:	Xxxxxx X. Xxx Partners, L.P., its sole member
	By:	Xxxxxx X. Xxx Advisors, LLC, its general partner
	By:	THL Holdco, LLC, its managing member
	By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Managing Director
	THL STERLING EQUITY INVESTORS L.P.
	By:	THL Equity Advisors VI, LLC, its general partner
	By:	Xxxxxx X. Xxx Partners, L.P., its sole member
	By:	Xxxxxx X. Xxx Advisors, LLC, its general partner
	By:	THL Holdco, LLC, its managing member
	By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Managing Director
	THL MANAGERS VI, LLC
	By:	Xxxxxx X. Xxx Partners, L.P., its managing member
	By:	Xxxxxx X. Xxx Advisors, LLC, its general partner
	By:	THL Holdco, LLC, its managing member
	By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Managing Director

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