XHIBIT 99.1

                            JOINT FILING AGREEMENT

     Pursuant to and in accordance with the Securities Exchange Act of 1934, as
amended, and the rules and regulations thereunder, each party hereto hereby
agrees to the joint filing, on behalf of each of them, of any filing required by
such party under Section 13 or Section 16 of the Exchange Act or any rule or
regulation thereunder (including any amendment, restatement, supplement, and/or
exhibit thereto) with the Securities and Exchange Commission (and, if such
security is registered on a national securities exchange, also with the
exchange), and further agrees to the filing, furnishing, and/or incorporation by
reference of this agreement as an exhibit thereto.  This agreement shall remain
in full force and effect until revoked by any party hereto in a signed writing
provided to each other party hereto, and then only with respect to such revoking
party.

     IN WITNESS WHEREOF, each party hereto, being duly authorized, has caused
this agreement to be executed and effective as of the date first written above.

Date: July 20, 2015                  Hayman Capital Management, L.P.


                                     By:    Hayman Investments, L.L.C.

                                     Its:   General Partner

                                     By:    /s/ Christopher E. Kirkpatrick
                                            --------------------------------

                                     Name:  Christopher E. Kirkpatrick

                                     Title: General Counsel


                                     Hayman Investments, L.L.C.

                                     By:    /s/ Christopher E. Kirkpatrick
                                            --------------------------------

                                     Name:  Christopher E. Kirkpatrick

                                     Title: General Counsel


                                     J. Kyle Bass

                                     By:    /s/ J. Kyle Bass
                                            ------------------------------

                                            Name:  J. Kyle Bass