SCHEDULE 13G

                                (Rule 13d-102)

 Information to be Included in Statements Filed Pursuant to Rule 13d-1(b), (c)
         and (d) and Amendments Thereto Filed Pursuant to Rule 13d-2.

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                   Under the Securities Exchange Act of 1934
                              (Amendment No. 7)*


                               MicroStrategy Inc
--------------------------------------------------------------------------------
                               (Name of Issuer)


                             Class A Common Stock
--------------------------------------------------------------------------------
                        (Title of Class of Securities)

                                   594972408
                  ------------------------------------------
                                (CUSIP Number)

                               December 31, 2013
                  ------------------------------------------
            (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

                               [X] Rule 13d-1(b)

                               [_] Rule 13d-1(c)

                               [_] Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's
  initial filing on this form with respect to the subject class of securities,
  and for any subsequent amendment containing information which would alter the
  disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

                                 Page 1 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Artisan Partners Limited Partnership
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     IA
--------------------------------------------------------------------------------

                                 Page 2 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Artisan Investments GP LLC
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     HC
--------------------------------------------------------------------------------

                                 Page 3 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Artisan Partners Holdings LP
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     HC
--------------------------------------------------------------------------------

                                 Page 4 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Artisan Partners Asset Management Inc.
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     HC
--------------------------------------------------------------------------------

                                 Page 5 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Artisan Investment Corporation
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     Wisconsin
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     HC
--------------------------------------------------------------------------------

                                 Page 6 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     ZFIC, Inc.
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     Wisconsin
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     HC
--------------------------------------------------------------------------------

                                 Page 7 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Andrew A. Ziegler
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.A.
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     IN
--------------------------------------------------------------------------------

                                 Page 8 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Carlene M. Ziegler
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.A.
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            568,541
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    620,859
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     620,859
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.8%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     IN
--------------------------------------------------------------------------------

                                 Page 9 of 19




CUSIP No.  594972408                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON

     Artisan Partners Funds, Inc.
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]

     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY

--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION

     Wisconsin
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER

 NUMBER OF          None
   SHARES       ---------------------------------------------------------------
BENEFICIALLY    6  SHARED VOTING POWER
  OWNED BY
    EACH            406,134
 REPORTING      ---------------------------------------------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH
                    None
                ---------------------------------------------------------------
                8  SHARED DISPOSITIVE POWER

                    406,134
-------------------------------------------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     406,134
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]

     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     4.5%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)

     IC
--------------------------------------------------------------------------------

                                 Page 10 of 19



Item 1(a)   Name of Issuer:

              MicroStrategy Inc

Item 1(b)   Address of Issuer's Principal Executive Offices:

              1850 TOWERS CRESCENT PLAZA, TYSONS CORNER, VA 22182


Item 2(a)   Name of Person Filing:

              Artisan Partners Limited Partnership ("APLP")
              Artisan Investments GP LLC ("Artisan Investments")
              Artisan Partners Holdings LP ("Artisan Holdings")
              Artisan Partners Asset Management Inc. ("APAM")
              Artisan Investment Corporation ("AIC")
              ZFIC, Inc. ("ZFIC")
              Andrew A. Ziegler
              Carlene M. Ziegler
              Artisan Partners Funds, Inc. ("Artisan Funds")

Item 2(b)   Address of Principal Business Office:

              APLP, Artisan Investments, Artisan Holdings, APAM, AIC, ZFIC,
                 Mr. Ziegler,
              Ms. Ziegler and Artisan Funds are all located at:

              875 East Wisconsin Avenue, Suite 800
              Milwaukee, WI 53202

Item 2(c)   Citizenship:

              APLP is a Delaware limited partnership
              Artisan Investments is a Delaware limited liability company
              Artisan Holdings is a Delaware limited partnership
              APAM is a Delaware corporation
              AIC is a Wisconsin corporation
              ZFIC is a Wisconsin corporation
              Mr. Ziegler and Ms. Ziegler are U.S. citizens
              Artisan Funds is a Wisconsin corporation

Item 2(d)   Title of Class of Securities:

              Class A Common Stock

Item 2(e)   CUSIP Number:

              594972408

Item 3      Type of Person:

              (d) Artisan Funds is an Investment Company under section 8 of the
              Investment Company Act.

              (e) APLP is an investment adviser registered under section 203 of
              the Investment Advisers Act of 1940.

              (g) Artisan Holdings is the sole limited partner of APLP and the
              sole member of Artisan Investments; Artisan Investments is the
              general partner of APLP; APAM is the general partner of Artisan
              Holdings; AIC is a control person of APAM; ZFIC is the sole
              stockholder of AIC; Mr. Ziegler and Ms. Ziegler are the principal
              stockholders of ZFIC.

                                 Page 11 of 19



Item 4    Ownership (at December 31, 2013):

              (a)  Amount owned "beneficially" within the meaning of rule 13d-3:

                   620,859

              (b)  Percent of class:

                   6.8% (based on 9,073,710 shares outstanding as of
                   October 22, 2013)

              (c)  Number of shares as to which such person has:

                   (i)    sole power to vote or to direct the vote:

                          None

                   (ii)   shared power to vote or to direct the vote:

                          568,541

                   (iii)  sole power to dispose or to direct the disposition of:

                          None

                   (iv)   shared power to dispose or to direct the disposition
                          of:

                          620,859

Item 5      Ownership of Five Percent or Less of a Class:

              Not Applicable

Item 6      Ownership of More than Five Percent on Behalf of Another Person:

              The shares reported herein have been acquired on behalf of
              discretionary clients of APLP; as reported herein, APLP holds
              620,859 shares, including 406,134 shares on behalf of Artisan
              Funds. Persons other than APLP are entitled to receive all
              dividends from, and proceeds from the sale of, those shares.

Item 7      Identification and Classification of the Subsidiary Which Acquired
            the Security Being Reported on by the Parent Holding Company or
            Control Person:

              Not Applicable

Item 8      Identification and Classification of Members of the Group:

              Not Applicable

Item 9      Notice of Dissolution of Group:

              Not Applicable

Item 10     Certification:

              By signing below I certify that, to the best of my knowledge and
              belief, the securities referred to above were acquired and are
              held in the ordinary course of business and were not acquired and
              are not held for the purpose of or with the effect of changing or
              influencing the control of the issuer of the securities and were
              not acquired and are not held in connection with or as a
              participant in any transaction having that purpose or effect.

                                 Page 12 of 19



                                   Signature

   After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: January 30, 2014

                                     ARTISAN PARTNERS ASSET MANAGEMENT INC,
                                     for itself and as the general partner of
                                     ARTISAN PARTNERS HOLDINGS LP

                                     By:   Gregory K. Ramirez*
                                           ------------------------------------

                                     ARTISAN INVESTMENTS GP LLC,
                                     for itself and as the general partner of
                                     ARTISAN PARTNERS LIMITED PARTNERSHIP

                                     By:   Gregory K. Ramirez*
                                           ------------------------------------

                                     ARTISAN INVESTMENT CORPORATION

                                     By:   Gregory K. Ramirez*
                                           ------------------------------------

                                     ZFIC, INC.

                                     By:   Gregory K. Ramirez*
                                           ------------------------------------

                                     ANDREW A. ZIEGLER

                                     Andrew A. Ziegler*
                                     ------------------------------------------

                                     CARLENE M. ZIEGLER

                                     Carlene M. Ziegler*
                                     ------------------------------------------

                                     ARTISAN PARTNERS FUNDS, INC.

                                     By:   Gregory K. Ramirez*
                                           ------------------------------------

                                     *By:  /s/ Gregory K. Ramirez
                                           -----------------------------------
                                           Gregory K. Ramirez
                                           Assistant Treasurer of Artisan
                                             Partners Asset Management Inc.
                                           Vice President of Artisan
                                             Investments GP LLC
                                           Attorney-in-Fact for Artisan
                                             Investment Corporation
                                           Attorney-in-Fact for ZFIC, Inc.
                                           Attorney-in-Fact for Andrew A.
                                             Ziegler
                                           Attorney-in-Fact for Carlene M.
                                             Ziegler
                                           Chief Financial Officer, Vice
                                             President and Treasurer of
                                             Artisan Partners Funds, Inc.

                                 Page 13 of 19



                                 Exhibit Index

Exhibit 1    Joint Filing Agreement dated January 30, 2014 by and among
             Artisan Partners Limited Partnership, Artisan Investments GP LLC,
             Artisan Partners Holdings LP, Artisan Partners Asset Management
             Inc., Artisan Investment Corporation, ZFIC, Inc., Andrew A.
             Ziegler, Carlene M. Ziegler and Artisan Partners Funds, Inc.

Exhibit 2    Power of Attorney of Artisan Investment Corporation dated
             February 28, 2013

Exhibit 3    Power of Attorney of ZFIC, Inc., dated August 31, 2012

Exhibit 4    Power of Attorney of Andrew A. Ziegler dated August 31, 2012

Exhibit 5    Power of Attorney of Carlene M. Ziegler dated August 31, 2012

                                 Page 14 of 19



                                                                      EXHIBIT 1

                            JOINT FILING AGREEMENT

   The undersigned hereby agree to the joint filing of the Schedule 13G to
which this Agreement is attached.

       Dated: January 30, 2014

                                     ARTISAN PARTNERS ASSET MANAGEMENT INC,
                                     for itself and as the general partner of
                                     ARTISAN PARTNERS HOLDINGS LP

                                     By:  Gregory K. Ramirez*
                                          ------------------------------------

                                     ARTISAN INVESTMENTS GP LLC,
                                     for itself and as the general partner of
                                     ARTISAN PARTNERS LIMITED PARTNERSHIP

                                     By:  Gregory K. Ramirez*
                                          ------------------------------------

                                     ARTISAN INVESTMENT CORPORATION

                                     By:  Gregory K. Ramirez*
                                          ------------------------------------

                                     ZFIC, INC.

                                     By:  Gregory K. Ramirez*
                                          ------------------------------------

                                     ANDREW A. ZIEGLER

                                     Andrew A. Ziegler*
                                     -----------------------------------------

                                     CARLENE M. ZIEGLER

                                     Carlene M. Ziegler*
                                     -----------------------------------------

                                     ARTISAN PARTNERS FUNDS, INC.

                                     By:  Gregory K. Ramirez*
                                          ------------------------------------

                                     *By:  /s/ Gregory K. Ramirez
                                           -----------------------------------
                                           Gregory K. Ramirez
                                           Assistant Treasurer of Artisan
                                             Partners Asset Management Inc.
                                           Vice President of Artisan
                                             Investments GP LLC
                                           Attorney-in-Fact for Artisan
                                             Investment Corporation
                                           Attorney-in-Fact for ZFIC, Inc.
                                           Attorney-in-Fact for Andrew A.
                                             Ziegler
                                           Attorney-in-Fact for Carlene M.
                                             Ziegler
                                           Chief Financial Officer, Vice
                                             President and Treasurer of
                                             Artisan Partners Funds, Inc.

                                 Page 15 of 19



                                                                      EXHIBIT 2

                               POWER OF ATTORNEY

   The undersigned, Artisan Investment Corporation, hereby appoints Charles J.
Daley, Jr., Sarah A. Johnson, Gregory K. Ramirez and Rebecca Himmelspach, and
each of them individually, its true and lawful attorney-in-fact and agent, with
full power to execute and file with the United States Securities and Exchange
Commission and any stock exchange or similar authority, for and on its behalf
in any and all capacities, any and all reports required to be filed pursuant to
Section 13 of the Securities Exchange Act of 1934 and the rules thereunder,
including but not limited to reports on Schedule 13D or 13G, any and all
amendments to such reports, with all exhibits, and any other forms or documents
as may be necessary in connection with the filing of such reports with the
United States Securities and Exchange Commission and any stock exchange or
similar authority, granting unto said attorney full power and authority to do
and perform any and all acts for and on behalf of the undersigned which may be
necessary or desirable to complete, as fully as the undersigned might or could
do in person.

   This Power of Attorney shall remain in full force and effect until revoked
by the undersigned in a signed writing delivered to the foregoing
attorneys-in-fact and agents.

   IN WITNESS WHEREOF the undersigned has caused this Power of Attorney to be
executed this 28/th/ day of February, 2013.

                                             Artisan Investment Corporation

                                             By:  /s/ Andrew A. Ziegler
                                                  -----------------------------
                                                  Andrew A. Ziegler
                                                  President

STATE OF WISCONSIN )
                   ) SS.
COUNTY OF MILWAUKEE)

   I, Lisa Moran, a Notary Public in and for the County of Milwaukee, State of
Wisconsin, DO HEREBY CERTIFY that Andrew A. Ziegler, who is personally known to
me to be the same person whose name is subscribed to the foregoing instrument,
appeared before me this day in person and acknowledged that he signed and
delivered the said instrument as his own free and voluntary act, for the uses
and purposes therein set forth.

   Given under my hand and notarial seal, this 28/th/ day of February, 2013.

                                                  /s/ Lisa Moran
                                                  -----------------------------
                                                  Notary Public

                                 Page 16 of 19



                                                                      EXHIBIT 3

                               POWER OF ATTORNEY

   The undersigned, ZFIC, Inc., hereby appoints Charles J. Daley, Jr., Sarah A.
Johnson, Gregory K. Ramirez and Rebecca Himmelspach, and each of them
individually, its true and lawful attorney-in-fact and agent, with full power
to execute and file with the United States Securities and Exchange Commission
and any stock exchange or similar authority, for and on its behalf in any and
all capacities, any and all reports required to be filed pursuant to Section 13
of the Securities Exchange Act of 1934 and the rules thereunder, including but
not limited to reports on Schedule 13D or 13G, any and all amendments to such
reports, with all exhibits, and any other forms or documents as may be
necessary in connection with the filing of such reports with the United States
Securities and Exchange Commission and any stock exchange or similar authority,
granting unto said attorney full power and authority to do and perform any and
all acts for and on behalf of the undersigned which may be necessary or
desirable to complete, as fully as the undersigned might or could do in person.

   This Power of Attorney shall remain in full force and effect until revoked
by the undersigned in a signed writing delivered to the foregoing
attorneys-in-fact and agents.

   IN WITNESS WHEREOF the undersigned has caused this Power of Attorney to be
executed this 31st day of August, 2012.

                                             ZFIC, INC.

                                             By:  /s/ Andrew A. Ziegler
                                                  -----------------------------
                                                  Andrew A. Ziegler
                                                  Vice President

STATE OF WISCONSIN )
                   ) SS.
COUNTY OF MILWAUKEE)

   I, Lisa Moran, a Notary Public in and for the County of Milwaukee, State of
Wisconsin, DO HEREBY CERTIFY that Andrew A. Ziegler, who is personally known to
me to be the same person whose name is subscribed to the foregoing instrument,
appeared before me this day in person and acknowledged that he signed and
delivered the said instrument as his own free and voluntary act, for the uses
and purposes therein set forth.

   Given under my hand and notarial seal, this 31st day of August, 2012.

                                                  /s/ Lisa Moran
                                                  ------------------------------
                                                  Notary Public

                                 Page 17 of 19



                                                                      EXHIBIT 4

                               POWER OF ATTORNEY

   The undersigned, Andrew A. Ziegler, hereby appoints Charles J. Daley, Jr.,
Sarah A. Johnson, Gregory K. Ramirez and Rebecca Himmelspach, and each of them
individually, his true and lawful attorney-in-fact and agent, with full power
to execute and file with the United States Securities and Exchange Commission
and any stock exchange or similar authority, for and on his behalf in any and
all capacities, any and all reports required to be filed pursuant to Section 13
of the Securities Exchange Act of 1934 and the rules thereunder, including but
not limited to reports on Schedule 13D or 13G, any and all amendments to such
reports, with all exhibits, and any other forms or documents as may be
necessary in connection with the filing of such reports with the United States
Securities and Exchange Commission and any stock exchange or similar authority,
granting unto said attorney full power and authority to do and perform any and
all acts for and on behalf of the undersigned which may be necessary or
desirable to complete, as fully as the undersigned might or could do in person.

   This Power of Attorney shall remain in full force and effect until revoked
by the undersigned in a signed writing delivered to the foregoing
attorneys-in-fact and agents.

   IN WITNESS WHEREOF the undersigned has caused this Power of Attorney to be
executed this 31st day of August, 2012.

                                                  /s/ Andrew A. Ziegler
                                                  ------------------------------
                                                  Andrew A. Ziegler

STATE OF WISCONSIN )
                   ) SS.
COUNTY OF MILWAUKEE)

   I, Lisa Moran, a Notary Public in and for the County of Milwaukee, State of
Wisconsin, DO HEREBY CERTIFY that Andrew A. Ziegler, who is personally known to
me to be the same person whose name is subscribed to the foregoing instrument,
appeared before me this day in person and acknowledged that he signed and
delivered the said instrument as his own free and voluntary act, for the uses
and purposes therein set forth.

   Given under my hand and notarial seal, this 31st day of August, 2012.

                                                  /s/ Lisa Moran
                                                  ------------------------------
                                                  Notary Public

                                 Page 18 of 19



                                                                      EXHIBIT 5

                               POWER OF ATTORNEY

   The undersigned, Carlene M. Ziegler, hereby appoints Charles J. Daley, Jr.,
Sarah A. Johnson, Gregory K. Ramirez and Rebecca Himmelspach, and each of them
individually, her true and lawful attorney-in-fact and agent, with full power
to execute and file with the United States Securities and Exchange Commission
and any stock exchange or similar authority, for and on her behalf in any and
all capacities, any and all reports required to be filed pursuant to Section 13
of the Securities Exchange Act of 1934 and the rules thereunder, including but
not limited to reports on Schedule 13D or 13G, any and all amendments to such
reports, with all exhibits, and any other forms or documents as may be
necessary in connection with the filing of such reports with the United States
Securities and Exchange Commission and any stock exchange or similar authority,
granting unto said attorney full power and authority to do and perform any and
all acts for and on behalf of the undersigned which may be necessary or
desirable to complete, as fully as the undersigned might or could do in person.

   This Power of Attorney shall remain in full force and effect until revoked
by the undersigned in a signed writing delivered to the foregoing
attorneys-in-fact and agents.

   IN WITNESS WHEREOF the undersigned has caused this Power of Attorney to be
executed this 31st day of August, 2012.

                                                  /s/ Carlene M. Ziegler
                                                  ------------------------------
                                                  Carlene M. Ziegler

STATE OF WISCONSIN )
                   ) SS.
COUNTY OF MILWAUKEE)

   I, Lisa Moran, a Notary Public in and for the County of Milwaukee, State of
Wisconsin, DO HEREBY CERTIFY that Carlene M. Ziegler, who is personally known
to me to be the same person whose name is subscribed to the foregoing
instrument, appeared before me this day in person and acknowledged that she
signed and delivered the said instrument as her own free and voluntary act, for
the uses and purposes therein set forth.

   Given under my hand and notarial seal, this 31st day of August, 2012.

                                                  /s/ Lisa Moran
                                                  ------------------------------
                                                  Notary Public

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