POWER OF ATTORNEY

    KNOW ALL MEN BY THESE PRESENTS THAT the undersigned hereby constitute and
appoint William Song and Joshua L. Targoff and each of them severally, as the
true and lawful attorneys and agents of each of the undersigned, with power to
act with or without the others and with full power of substitution and
resubstitution, to execute in the name, place and stead of each of the
undersigned any statement or report, including any amendment to any statement or
report, required to be filed with respect to the undersigned (whether such
filing includes one or more or all of the undersigned) under Section 13 or
Section 16 of the United States Securities Exchange Act of 1934, as amended, and
any rules, regulations and requirements thereunder, including any forms or
statements required to be submitted in connection with any electronic filing, or
any statement or report, including any amendment to any statement or report,
required to be filed with respect to any of the undersigned under any comparable
laws, rules, regulations and requirements of any foreign jurisdiction, and to
file any of the same with the Securities and Exchange Commission and any other
appropriate U.S. and foreign regulatory authorities, said attorneys and agents
having full power and authority to do and perform in the name and on behalf of
any of the undersigned every act necessary to be done in the premises as fully
and as effectually as the undersigned might or could do in person; and each of
the undersigned hereby ratifies and confirms all that said attorneys and agents
shall do or cause to be done by virtue hereof.

    IN WITNESS WHEREOF, the undersigned has subscribed these presents as of July
26, 2016.

                                        /s/ Daniel S. Loeb
                                        --------------------------------
                                        Daniel S. Loeb

                                        THIRD POINT LLC


                                        By:  /s/ Daniel S. Loeb
                                             ---------------------------
                                        Name:Daniel S. Loeb
                                        Title: Chief Executive Officer