POWER OF ATTORNEY

      By  executing  below, the undersigned hereby constitutes and appoints each
of  Aric Spitulnik, Senior Vice President, Chief Financial Officer and Corporate
Secretary  of the Company, and Cindy King, a Vice President of the Company, from
time  to time, acting singly, the undersigned's true and lawful attorney-in-fact
to:

      (1)   execute  for  and on behalf of the undersigned, in the undersigned's
            capacity  as  an  officer and/or director of the Company, Forms 3, 4
            and  5,  and  any  successor  forms  thereto,  (each,  a  "Form" and
            collectively,  the  "Forms")  and any amendment or amendments to any
            such  Form,  in  accordance  with  Section  16(a)  of the Securities
            Exchange Act of 1934 and the rules thereunder;

      (2)   do and perform any and all acts for and on behalf of the undersigned
            which may be necessary or desirable to complete and execute any such
            Form,  complete and execute any amendment or amendments thereto, and
            timely  file  such  Form  with  the  U.S.  Securities  and  Exchange
            Commission  and  any  stock exchange or market or similar authority;
            and

      (3)   take  any other action of any type whatsoever in connection with the
            foregoing  which, in the opinion of such attorney-in-fact, may be of
            benefit  to,  in  the  best interest of, or legally required by, the
            undersigned, it being understood that the documents executed by such
            attorney-in-fact on behalf of the undersigned pursuant to this Power
            of  Attorney  shall be in such form and shall contain such terms and
            conditions   as   such   attorney-in-fact   may   approve   in  such
            attorney-in-fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full power and
authority  to  do  and perform any and every act and thing whatsoever requisite,
necessary,  or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could  do  if personally present, with full power of substitution or revocation,
hereby  ratifying  and  confirming  all  that  such  attorney-in-fact,  or  such
attorney-in-fact's  substitute  or substitutes, shall lawfully do or cause to be
done  by  virtue  of  this  Power  of  Attorney and the rights and powers herein
granted.  The  undersigned acknowledges that the foregoing attorneys-in-fact, in
serving  in  such  capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the  Securities Exchange Act of 1934, as amended or the rules
thereunder.

      This  Power  of  Attorney  shall remain in full force and effect until the
undersigned   is   no  longer  required  to  file  Forms  with  respect  to  the
undersigned's  holdings  of and transactions in securities (including derivative
securities)  issued  by the Company and security-based swap agreements involving
such  securities,  unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

If a  nominee for  election as a director of  the Company,  by signing below the
undersigned  consents to being  named as such  nominee in any  public filings or
documents to be  filed by the Company, including any  Proxy Statement or related
documents to be used by the Company or its Board of Directors in the
solicitation of proxies for voting at such election.

Date:  December 16, 2020
                                         Signature:  /s/ J. Timothy Bryan
                                                     ---------------------------
                                         Print Name: J. Timothy Bryan